Portable short electric arc processing system

A portable movable discharge processing system by short electric arc, including a power supply cooling water tank, a short electric arc cutting power supply, a ring current device a feeding mechanism, a hanging bracket and a pneumatic ring current tool mounted on the hanging bracket, which are successively and cooperatively mounted on a horizontal plane; an air compressor and a sewage pump, which are successively connected to the feeding mechanism; a self-priming pump and a movable short-electric arc cutting device control cabinet, which are successively connected to the air compressor; an anode device which is connected to the movable short-electric arc cutting device control cabinet through an anode cable; a cathode device which is connected to the movable short-electric arc cutting device control cabinet through a cathode cable; and a water pump which is connected to the anode device through a pipeline.

This is a U.S. national stage application of PCT Application No. PCT/CN2015/000590 under 35 U.S.C. 371, filed Aug. 14, 2015 in Chinese, claiming the Chinese priority application No. 201410632093.X filed Nov. 11, 2014, which are all hereby incorporated by reference.

TECHNICAL FIELD

The present invention refers to short electric arc technology field, particularly to a portable Short Electric Arc Processing System.

BACKGROUND OF THE INVENTION

Discharge of short electric arc refers to an effectively controlled discharge cluster phenomenon with specific current, voltage wave, frequency, amplitude and discharge mode that is generated by scientific mechanical motion and electric action in the action of air-liquid medium.

Short electric arc cutting technology refers to an electric cutting method to corrode metal and non-metal conductive materials by the simulated short electric arc discharge cluster of sparkle discharge cluster produced between two electrodes in the medium action of pressurized air-liquid mixture at certain ratio. It belongs to electric processing technology in special processing industry. It is a new electric processing technology of strong electron current, ion current and arc current cutting and new industrial term.

In the realization of the present invention, the inventor found the defects of inconvenient use, heavy labor intensity and poor safety in the existing technologies.

SUMMARY OF THE INVENTION

In light of the above problems, an object of the present invention is to provide a portable short electric arc processing system to achieve the advantages of convenience in use, less labor intensive and excellent safety.

To achieve the above object, the present invention provides a portable short electric arc processing system comprising: a cooling water tank, a short electric arc power supply, a circulation device, a feeding mechanism, a hanger and a pneumatic circulation tool mounted on the hanger, all of which are successively/sequentially and cooperatively mounted on a horizontal plane; an air compressor and a draining pump both of which are successively connected to the feeding mechanism through a pipeline; a sucking pump and a control cabinet for the short-electric arc processing system, both of which are successively connected to the air compressor through a pipeline; an anode device which is connected to the control cabinet through a cable to the negative pole of the power supply; a cathode device which is connected to the control cabinet through a cable to the positive pole of the power supply; and a water pump which is connected to the cathode device through a pipeline, wherein said power supply is connected to the cooling water tank, the circulation device, the feeding mechanism, the sucking pump, the control cabinet, the anode device, the pneumatic circulation tool mounted on the hanger, the cathode device and the water pump, respectively.

Preferably, the circulation device comprises a cathode base, a main cathode shaft mounted on the cathode base, a tool electrode fixed to an electrode base mounted on the left end of the cathode main-shaft, a pressure plate for mounting the tool electrode axially, the tool electrode and a shield bracket which are successively and cooperatively mounted on the left and right sides of the electrode base one by one upwards, a left water shield and a right water shield which are vertically mounted on both sides of the electrode base, a pair of electric collectors which are symmetrically mounted over and under the main cathode shaft, an insulation component which is mounted between said pair of electric collectors, a cathode shield which is mounted over said pair of electric collector, a motor which is mounted between the cathode shield and the upper electric collector, an electric brush which is mounted on the motor, a motor pulley, a ball bearing, a lead screw, a pulley bearing and a rear bearing cap all of which are cooperatively mounted on the motor, a tool electrode shield which is mounted on the right end portion of the main cathode shaft, and a grease fitting and a seal and a water-air mixing device which are mounted inside of the tool motor shield.

Preferably, the feeding mechanism comprises a longitudinal base which is set horizontally, a left shield, a railway, a bracket and a water catcher which are mounted over a left end portion of the longitudinal base, a transverse base which is mounted on a middle portion of the longitudinal base, and a right shield which is mounted on a right end portion of the longitudinal base;

a circulation tool base which is mounted on the transverse base, a fixed shaft which is mounted on the circulation tool base, a nut seat and a rail slider which are mounted between the transverse base and the circulation tool base, and a railway which is mounted on the rail slider;

a back hand wheel which is mounted on the right end portion of the longitudinal base, a bearing cap which is mounted between the back hand wheel and the longitudinal base, a transverse front shield and a transverse rear shield which are mounted on the front and rear sides of the longitudinal base which is close to the back hand wheel, a transverse lead screw and a longitudinal lead screw which are mounted under the transverse rear shield, a bearing housing which is mounted in the longitudinally movable base close to the back hand wheel, a ball bearing and a thrust bearing which are mounted in the bearing housing; and a guiding rail hole cover which is mounted between the longitudinal base and the transverse base.

Preferably, the anode device comprises an anode connecting plate which is set vertically, an anode collecting shaft and an anode holder sleeve which are mounted on the anode connecting plate from left to right, an electric brush component, a pressure spring and an anode collector which are located over the anode collecting shaft from left to right, a lead screw which is set horizontally over the anode collecting shaft, an anode bearing housing which is located over the anode holder sleeve and mounted vertically on a right end portion of the lead screw; a ball bearing, an anode bearing end cap and a sealing which are cooperatively mounted between the anode bearing housing and the anode holder sleeve; and a grease fitting, a wiring board and an insulation which are located under the anode holder sleeve and mounted on the anode bearing housing.

Preferably, the circulation device comprises a portable pneumatic circulation tool for a short electric arc processing, and a hanger for hanging the portable pneumatic circulation tool.

Preferably, the portable pneumatic circulation tool comprises an electrode mounting shaft which is set horizontally, a tool electrode which is vertically mounted on the left end portion of the electrode mounting shaft, an electric collecting ring, a ceramic bearing, a spacer, an electric brush component, an electric collector, a first bearing and a connecting shaft which are cooperatively mounted on the electrode mounting shaft one by one from left to right, a second bearing which is located on the right side of the connecting shaft and vertically mounted on the electrode mounting shaft, a main body, a blade-type pneumatic motor, a base, a body valve core, a regulating switch, a handle and a quick air-pipe fitting which are located on the right side of the second bearing and cooperatively mounted on the electrode mounting shaft one by one from left to right, and a strut, a spacer, a handle and a Y-shaped air-pipe fitting which are located under the electrode mounting shaft and cooperatively mounted on the electrode mounting shaft.

Preferably, the hanger comprises a chassis which is set horizontally, a wheel which is vertically mounted on the chassis, a stand which is vertically mounted on the top of the wheel, an adjustable horizontal arm which is horizontally mounted on the top of the stand, a locking component which is aslant mounted between an end portion of the adjustable horizontal arm assembly and the wheel, a bracket and a manual winch which are cooperatively mounted between the locking component and the wheel, a chassis base which is mounted between the chassis and the wheel;

a pulley set and a roller bracket which are mounted between the end portion of the adjustable horizontal arm and the locking component, legs and a bearing which are mounted on the bottom of the chassis, and a remote control box of the power supply and a pneumatic circulation tool which are mounted on the wheel.

Preferably, the power supply comprises a main circuit, a control circuit, a display circuit and a protection circuit, and the control circuit is connected to the main circuit, the display circuit and the protection circuit respectively.

Preferably, the main circuit comprises an AC supply voltage display circuit, an RC resistance-capacitance absorption circuit, a primary voltage regulating circuit, a rectifier transformer, a secondary rectifying circuit, a diverter output circuit and an overload protection and display circuit which are connected successively;

the control circuit, the protection circuit and the display circuit are made of a control panel typed CTSC070802F and electrical elements, the Protection circuit and the display circuit are incorporated into the control circuit.

The various embodiments of the present invention provide a portable short electric arc processing system comprising: a cooling water tank, a short electric arc power supply, a circulation device, a feeding mechanism, a hanger and a pneumatic circulation tool mounted on the hanger, all of which are successively/sequentially and cooperatively mounted on a horizontal plane; an air compressor and a draining pump both of which are successively connected to the feeding mechanism through a pipeline; a sucking pump and a control cabinet for the short-electric arc processing system, both of which are successively connected to the air compressor through a pipeline; an anode device which is connected to the control cabinet through a cable to the negative pole of the power supply; a cathode device which is connected to the control cabinet through a cable to the positive pole of the power supply; and a water pump which is connected to the cathode device through a pipeline, wherein said power supply is connected to the cooling water tank, the circulation device, the feeding mechanism, the sucking pump, the control cabinet, the anode device, the pneumatic circulation tool mounted on the hanger, the cathode device and the water pump, respectively. The present invention overcome the problems of the prior art to achieve the advantages of convenience in use, less labor intensive and excellent safety.

The present invention will be described in details with reference to the following drawings.

Based onFIG. 7, figure references in the implementation of the present invention are as follows:

PARTICULAR EMBODIMENTS

The best implementations of the present invention are elaborated on the basis of figures. The best implementations here are used to elaborate and interpret the present invention only but not used to restrict the present invention.

According to the implementations of the present invention, a portable discharge processing system by short electric arc is provided as shown inFIG. 1toFIG. 7.

According toFIG. 1, a portable short electric arc processing system comprises a short-electric arc cutting power supply, a short-electric arc circulation tool, a control system, a water-air mixing system, an electric connection system, and a hanger. 1. A Short electric arc cutting power supply comprises a main circuit, a control circuit, a display circuit and a protection circuit.

The main circuit comprises an incoming AC voltage signal display circuit, a RC (resistance capacity) absorption circuit, a primary voltage-regulating circuit, a rectification transformer, a secondary rectification circuit, a shunting and outputting circuit, an overload signal protection and display circuit.

One ends of the main circuit AC power lines A, B and C and the neutral line N are respectively connected with AC power source. The other ends of the power lines A, B, C and the neutral line N sequentially are connected to the input terminals of an air switch ZK respectively; the output terminals of the air switch ZK are connected to the input terminals of a three-phase and five-pole transformer ZLB having six phase output terminals; each of the six phase output terminals of the five-pole transformer ZLB is connected to a terminal of one of thyristor rectifiers D1-D6and the other terminals of the thyristor rectifiers are connected with the terminal AX of a shunt FL; the other terminal of the shunt FL outputs a negative work power voltage; the other terminals of three-phase and five-pole transformer ZLB outputs a positive work power voltage.

Six couple RC absorption modules are connected to thyristor rectifier D1-D6in parallel to protect thyristor rectifier D1-D6; the K and G trigger control terminals of thyristor rectifier D1-D6are respectively connected to the K and G trigger control pins of a control panel.

1.2 Control Circuit, Protection Circuit and Display Circuit:

The control circuit, protection circuit and display circuit mainly comprises CRSC070802F control panel and other electric elements, and protection circuit and display circuit are comprised in the control circuit.

The pins in the bottom of the control panel CTSC070802F are: CV, CC, V−, +V, AX, UX, GND, GND, AK and CT.

The pins on the right side of the control panel CTSC070802F from top to the bottom are: eight couples of G and K pins, used to control thyristors.

The pins on the left side of the control panel CTA08021 are: V, −IR, GND, GND, AC15V, AC15, GND, GND, AC7V and AC7V.

The pins on the right side of the control panel CTA08021 are: V, I, GND, GND, +5V and 0V.

The input voltage of the power source is 220V and the input terminals are LC and N, the output terminals are 12V and GND. The output terminals supply power for the coils of the four relays J1, J2, J3 and J4, so that the relays can work.

The pins on the top of the control panel IGJ-75mv are: IF, GND and CT the normally open contacts.

The pins on the bottom of the control panel IGJ-75mv are: AC15V and AC 15V.

The pins on the left side of the phase-sequence and default-phase protector are: A, B and C.

The pins on the top of the phase-sequence and default-phase protector are: four pins or two couple couples of normally open contacts.

Each of the Relays J1, J2, J3 and J4 has eight or four couples of normally open contacts couple used for switching and controlling power lines.

Relay J1 has four couples of or eight contacts from left to right. The Input terminals of the first couple are connected to the LC reset, the left terminal of the output terminals is connected to the local LC reset and the right terminal is connected to the remote LC reset; the input terminals of the second couple are connected to the CT and connected to the point A of the transformer, the left terminal of output terminals is connected to the local LC reset and the right terminal is connected to the remote LC reset; the third couple is idle or open; the input terminal of the fourth couple is connected to CV and connected to the pin CV on the bottom of the control panel CTSC070802F, the left terminal of the output terminals is connected to the local CV and the right terminal is connected to the remote CV.

Relay J2 has four couples of or eight contacts from left to right. The input terminal of the first couple is connected to GNDU and connected to the pin GND on the bottom of the control panel CTSC070802F, the left terminal of the output terminal is connected to the top of GNDU at the output terminal of power source and the right terminal is connected to the top of the remote GNDU; the input terminal of the second couple is connected to CT and connected to point A of the transformer, the left terminal of the output terminals is connected to the local CT reset and the right terminal is connected to the remote CT reset; the third couple is idle; the input terminals of the fourth couple are connected to the CV and connected to the pin CV on the bottom of the control panel CTSC070802F, the left terminal of the output terminals is connected to the local CV and the right terminal is connected to the remote CV.

Relay J3 has four couples of or eight contacts from left to right. The Input terminals of the first couple is connected to the water valve 380C2 and the input terminals of the four couples are connected to the water valve 380C2, the water valve 380VC, the air valve 220VL and the air valve 220L2 in parallel, the left terminal of the output terminal is connected to the water valve 380VC and connected to a second couple of water valve 380VC in parallel and the right terminal is connected to remote LC reset; the input terminals of the second couple are connected to CT and connected to point A of the transformer, the left terminal of the output terminals is connected to local CT reset and right the terminal is connected to remote CT reset; the third couple is idle; the input terminals of the fourth couple are connected to CV and connected to the pin CV on the bottom of the control panel CTSC070802F, the left terminal of the output terminals is connected to local CV and the right terminal is connected to remote CV.

Relay J4 has four couples of or eight contacts from left to right. The first couple, second couple and third couple are idle. The Input terminals of the fourth couple are connected to 75mvJ and connected to pin CT on the bottom of the control panel CTSC070802F and the left terminal of the output terminals is connected to the upper terminal of the water flow switch CT and the right terminal is idle.

The Six input terminals are successively from left to right connected to: remote LC reset, remote LC reset, remote water valve 380VC, remote water valve 380VC2, remote air valve 220VL and remote air valve 220VN;

The Six output terminals are successively from left to right connected as follows: the output terminals of remote LC resets are respectively connected to the two terminals of the reset switch to form a circuit; the output terminals of remote water valves 380VC and 380VC2 are respectively connected to the terminals of the water switch to form a circuit; the output terminals of the remote air valves 220VL and 220VN are respectively connected to the two terminals of the air switch to form a circuit.

As shown inFIG. 7, the power output terminals are respectively from left to right connected to: local CT, (circuit board) local AK, GND0, GNDU, UX, GNDa (08021), AX (08021), V−, CV, an idle couple of terminals, GND light, J75mv over-current 12V, J75mv alertalert 12V, J phase-sequence over/under voltage 12V, default phase V, default phase over temperature over temperature V, local/remote control 1, local/remote control 2, key CT, emergency stop CT, an idle couple of terminals, local LC reset, local LC reset, local water valve 380VC, local water valve 380VC2, local air valve 220VL, local air valves 220VN, AC 380VA, AC380VC, air valve 220VL, air valve 220VN, water flow switch CT, water flow switch VC, another terminal remote CT, (circuit board) remote AK, remote GND0, remote GNDU, remote UX, remote GNDa (08021), remote AX (08021), remote V−, remote CV, an idle couple of terminals, emergency stop CT and emergency stop CT.FIG. 7shows switch power1f, water switch2fand reset button3f.

“Local” refers to LC (local control) and remote refers to RC (remote control), representing different control terminals and control modes.

The terminals are respectively from left to right connected as follows:

One of the output terminals of the Local CT is connected to one terminal of a function output switch and the other terminal of the function output switch is connected to outgoing terminal of GNDU, one terminal of voltmeter connected to UX outgoing terminal and V− outgoing terminal, terminal A of ampere meter is connected to outgoing terminal of GNDa (08021) and the other terminal is connected to the outgoing terminal of AX (08021).

(Circuit board) local AK outgoing terminal is connected to the fixed output regulating terminal of potentiometer W, outgoing terminal of GND0 is connected to the other output regulating terminal of potentiometer W, CV outgoing terminal is connected to the output regulating terminal of potentiometer W.

The outgoing terminal of GND light is respectively connected to one terminal of over-current indicator light, over-current alertalert light and under-voltage indicator light, the other terminal of over-current indicator light is connected to J75mv over-current 12V outgoing terminal, the other terminal of over-current alert light is connected to outgoing terminal of J75mv alertalert 12V, the other terminal of under-voltage indicator light is connected to outgoing terminal of J phase-sequence over/under voltage 12V.

One terminal of default-phase indicator light is connected to outgoing terminal of default phase V and the other terminal is connected to outgoing terminal of default phase G

One terminal of over-temperature G outgoing terminal and the other terminal is connected to over-temperature V outgoing terminal.

Local control terminal of local control and remote control of the switch is connected to outgoing terminal of a first local/remote control and remote control terminal of local control and remote control of the switch is connected to outgoing terminal of a second local/remote control.

Outgoing terminal of key CT is connected to one terminal of key switch YAQ, the other terminal of key switch YAQ is connected local control emergency stop button JAT in series and the other terminal of emergency stop bottom JAT of local control is connected to outgoing terminal of emergency stop CT.

One terminal of reset button is connected to outgoing terminal of local LC reset and the other terminal is connected to the outgoing terminal of local LC reset.

One terminal of water switch is connected to outgoing terminal of water 380VC and the other terminal is connected to outgoing terminal of local water 380VC2.

One terminal of air switch is connected to outgoing terminal of local air 220VL and the other terminal is connected to outgoing terminal of 220VN.

One terminal of power input voltmeter is connected AC380VA outgoing terminal and the other terminal is connected to AC380VC outgoing terminal. Meanwhile, power input voltmeter V is connected to power indicator light in parallel to indicate whether the power is electrified.

One terminal of solenoid valve is connected to air 220VL outgoing terminal and the other terminal is connected to 220VN outgoing terminal to control the air.

One terminal of water flow switch is connected to water flow switch CT outgoing terminal and the other terminal is connected to CT outgoing terminal of another water flow switch.

Remote Control Line is:

Remote CT outgoing terminal is connected to normally open contact of function output switch and the other terminal of normally open contact is connected to remote GNDU outgoing terminal, one terminal of voltmeter connected to remote UX outgoing terminal and remote V− outgoing terminal, one terminal of ampere meter is connected to remote GNDa (08021) outgoing terminal and the other terminal is connected to remote AX (08021) outgoing terminal.

(Circuit board) remote AK outgoing terminal is connected to the fixed output regulating terminal of potentiometer W, outgoing terminal of remote GND0 is connected to the other output regulating terminal of potentiometer W and remote CV outgoing terminal is connected to the output regulating terminal of potentiometer W.

Outgoing terminal of emergency stop CT connected to point B of transformer is connected to one terminal of RC emergency stop button JAT and the other terminal of RC emergency stop button JAT is connected toe outgoing terminal of emergency stop CT connected to transformer C.

Purposes of terminals and numbers that are not used in the control panel are not considered and are not included in the protection scope of the present invention.

3. A Pneumatic Circulation Tool for a Short Electric Arc Process:

The Pneumatic circulation tool comprises a portable pneumatic circulation tool or a movable light cathode device.

A portable pneumatic circulation tool:

A user can hold such a portable pneumatic circulation tool to process and finish a conductive hard material. This circulation tool comprises a pneumatic device, an electric charging device, an electric arc device and an air-liquid mixing device.

As shown inFIG. 6, the technical features of the circulation tool are as follows: a tool electrode11eis fixed to an electrode mounting shaft5eby means of bolts3eand elastic washers4e; the electrode mounting shaft5eis mounted to an electric collecting ring10eby means of fine-thread bolts1eand elastic washers2e, while an axial hole of the electrode mounting shaft5eis coupled solidly to the connecting shaft26eby means of a nut6eand an elastic washer7eto make sure that the electrode mounting shaft5e, the electric collecting ring10eand the connecting shaft21eare co-axial so as to prevent any eccentric movement or vibration caused as the tool electrode11e, the electrode mounting shaft5e, the electric collecting ring10eand the connecting shaft21erotates and to prevent the two high-temperature resistant ceramic or plastic bearings13eand the bearing20efrom a fast damage; the two high-temperature resistant ceramic or plastic bearings13eare mounted on the left end portion of the main body22eand the two high-temperature resistant ceramic or plastic bearings13eare separated by a spacer14e, the left end portion of the main body22ehas a radial shoulder and a distal end portion for passing and holding the inner racers of the two high-temperature resistant ceramic or plastic bearings13ewhile a pressure nut12eis used for fixation to prevent the two bearings20efrom slipping off the left end portion of the main body22e; the nut6eand the elastic washer7eare pressed on the axial hole of the electrode mounting shaft5eto prevent the electrode mounting shaft5eand the electric collecting ring10efrom slipping off the connecting shaft21e.

The electric collecting ring10eis fixed on the connecting shaft21eby means of a key9e, and has a bigger hole on the left side fit on the outer racers of the two high-temperature resistant ceramic or plastic bearings13e; an elastic collar8is mounted on the connecting shaft26eagainst the left side of the collecting ring10eto prevent the electric collecting ring10efrom slipping off the connecting shaft21e.

The right end portion of the connecting shaft21eis mounted rotatably on the a bearing housing22eof the main body23evia the inner racer of a bearing22e, while the left portion of the connecting shaft21eis mounted on the left portion of the main body23erotatably by means of the inner racers of the two plastic bearings20e; the right portion of connecting shaft21eis male-female coupled to a blade-type pneumatic motor24e, the blade-type pneumatic motor24ehas an eccentric cylinder mounted in an internal cavity of the main body23e, while the blade-type pneumatic motor24eis held concentrically to the internal hole of the main body23eand the connecting shaft21ewithout significant errors.

A base26ehas a threaded left portion coupled to the inner threaded right portion of the main body23eso as to mount the blade-type pneumatic motor23etightly into the eccentric cavity of main body23e; wrench seats are formed on the left portion of the main body23eand the right portion of the base26efor screwing the main body23eand the base26eup tightly.

A valve core29ehas a threaded left portion coupled to the innerly threaded right portion of the base25eand an O-shaped ring is mounted in a sealing groove formed in the left portion of valve core29e; the valve core29ehas a position-limiting cylindrical pin27efor limiting the degree of the rotation of the regulation switch30e; two slots are formed into the regulating switch30eto control an air inlet volume and are long enough to cover two radial air holes. It's important to explain that the horizontal hole in the right portion of the valve core29eis open to the right radial air hole and to an air inlet end; the horizontal hole in the left portion of the valve core29eis open to the left radial air hole and to the pneumatic motor24eso that the regulating switch30ecan regulate the air inlet volume and the motor speed.

A cylindrically hollow insulating handle31ehas a threaded left end portion engaged to the outer thread of the right portion of the valve core29eand an O-shaped sealing31eis mounted in a sealing groove formed in the right portion of the valve core29e.

A quick air-pipe fitting33ehas a threaded left end portion fit to the inner thread of the right portion of a handle32eand the right end of the quick fitting32eis connected to a quick fitting to a compressed air source. When the air source is turned on, the regulating switch30ecan be adjusted to accelerate, decelerate or stop the tool electrode11e.

A sealing ring43eis mounted over an outlet formed in the left portion of the main body23eand fastened by bolts34e. The internal curve surface of the sealing ring43eis sealed over the main body23eby an adhesive; an insulating handle42eis mounted on the sealing ring43eand a Y-shaped quick fitting44eis mounted on the sealing ring43eand another Y-shaped quick fitting44econveys a secondary or used air discharged through an air pipe to another Y-shaped quick fitting46eto a water-air mixer45e; a water-air nipple48eis used to provide a working medium for a water-air mixture to recycle the used air; a water is distributed to the Y-shaped quick fitting46einto the water-air mixer by means of a T-shaped quick fitting45e, the quick fitting46eand the water-air mixer48eare connected by a threaded sleeve47e. The inlet water volume can be adjusted by a control valve if necessary. The water can be provided by a water pup, come from a tap water or sucked by a vacuum generated by a compressed air running through the water-air mixer48e.

The right ends of three regularly arranged struts37eare fixed on a flange of the main body23eby means of nuts34eand the other end (left end) is mounted on an electric collector19eby means of nuts35e; the collector plate19eis mounted with a brush15eand a brush bracket16eand a pressure spring17e; the brush bracket and spring16eand17eare fixed to the collector19eby means of a bolt18eand each brush15eis connected to the collector19ethrough a copper wire; each brush15eis pressed against the electric collecting ring10eby means of the brush bracket and the pressure spring so the collecting ring10eis charged rotatably; the collector19ecan be connected to the positive pole of the short electric arc power supply via a bolt50e, a nut51e, an elastic washer52e, a gasket53ethrough a cable.

One end of a shield49eis fixed to the flange of the main body23eby means of three screws38eand the other end side is set to shield the tool electrode11efrom the splashing of a short electric arc processing, in order to protect operators during operation. A sealing ring41eis mounted in the middle portion of the shield49eto prevent the collecting ring10eand the brush15e, the brush bracket and spring16eand17eand the collector19efrom contamination.

The tool electrode11eof the circulation tool can be replaced with a grinding wheel for direct mechanical cleaning. The tool electrode11emay be made from any conductive materials.

The main body23e, the base26e, the valve core29e, the regulating switch30eand the handle32eof the circulation tool is coated with a 0.5 mm-1 mm thick high-voltage insulating material. A weight bracket54eis mounted on the left portion of circulation tool. The weight bracket54eis used for a ballance weight when the circulation tool is overweight. The main body23e, the base26e, the valve core29e, the regulating switch30and the handle32eof the circulation tool may be made from various light insulating plastics, fiberglass, PVC materials or high-strength insulating ceramics.

4. Movable Light Cathode Device for a Short-Electric Arc Process

Movable Light Cathode Device Comprises a Movable Short-Electric Arc Cutting Device:

The Circulation Device

The circulation device has the following features: a main cathode shaft2amounted on an insulating cathode base1arotatably by means of front bearing and rear bearings18a, a front bearing cap7ais mounted on the front end of the cathode base1aand in front of the bearing18a, and the rear bearing cap37ais mounted on the rear end of the cathode base1aand behind the rear bearing18aby means of hexagon socket screws43a. A filling channel and a grease fitting32aare formed through the front bearing cap7afor a grease lubrication of the front bearing18a; a trapezoidal groove is formed in the front bearing cap13a, and a wool ring7ais mounted therein to prevent the lubricating grease from leaking from between the main cathode shaft2aand the front bearing cap7a; a filling channel and a grease fitting32aare formed in the rear bearing cap37afor a grease lubrication of the rear bearing18a; a wool O-ring is mounted in a trapezoidal groove formed in the rear bearing cap37aor in the main cathode shaft2ato shield the rear bearing.

A shield bracket6ais mounted on the front bearing cap7aand the shield bracket6ais mounted on the front bearing cap7aby means of sunk screws, a flange6ais mounted to the left distal end of the shield bracket6aby means of bolts, a cathode shield13ais mounted on the left distal end of flange6aby means of outside hex bolts58a, elastic washers59aand washers60a, a water-air mixing device is mounted on the cathode shield13a, which can be adjusted upwards, downwards, forwards and backwards as desired.

A tool electrode1ais mounted to the left distal end of the main cathode shaft2a, a tool electrode base3ais mounted at the left distal end of the main cathode shaft2aby means of regularly arranged bolts, a pressure plate4a, through hexagon socket screws62aand elastic washers63a, realizes a synchronous rotation of the tool electrode base3a, the tool electrode5aand the main cathode shaft2a, wherein the tool electrode5ais fixedly connected to the left distal end of the tool electrode base3a.

A gear motor14ais mounted to the cathode base1aby means of elastic washers19a, washers20aand outside hex bolts21a, two struts26aare mounted in the right end portion of the cathode base1aby means of threads, a belt pulley bearing29ais mounted on the two struts26a, the belt pulley bearing29ais fixed to the two struts26aby means of nuts, a tensile wheel25ais mounted under the belt pulley bearing29ato the right end portion of the cathode base1aby means of a bolt to regulate the tension of V-shaped belt24aand to realize a solid transmission. A Cathode shield13ais mounted over the cathode base1aby means of screws, washers and elastic washers, to prevent water and dirt from damaging the parts in the cathode shield13a. At the same time, this can prevent dirt from causing detrimental damages to the gear motor14aso that long term normal operation is guaranteed.

Electric Collectors10aare mounted between the front bearings and the rear bearings of the cathode base1a. The Number of the collector10amay be selected as desired. There are two collectors10ain the figure. Brush components (brush15a, brush bracket16aand pressure spring17a) are evenly mounted on the collector10aand the number of the brush components (brush15a, brush bracket16aand pressure spring17a) shall be determined as desired. Three lead screws23aare mounted to the two collectors10aand the two cathode collectors10aare set in parallel and three lead screws23aare mounted to the two collectors10ain an insulating way by means of an insulating sleeve11aand an insulating gasket12a(see the figure) by nuts; meanwhile, the collectors10amust be mounted vertically to the central line of the main cathode shaft2aand at the middle portion of the main cathode shaft2a, specifically a wear—resistant copper alloy is cast on the main cathode shaft2aso that the brushes on the brush components (brush15, brush bracket16and pressure spring17a) are evenly distributed on the shaft surface of the main cathode shaft2aand realize the rotation and conduction functions of the main cathode shaft2a. The brush components (brush15a, brush bracket16aand pressure spring17a) use constant pressure springs. The lines of the brushes of each brush component (brush15a, brush bracket16aand pressure spring17a) are connected to the collector10aby means of outside hex bolts44a, nuts45a, washers46aand elastic washers47ato guarantee excellent connectivity and realize reliable electric connection.

One end of a cathode cable is cramped on a wiring plate42aof the circulation device by means of a bolt, a nut, an elastic washer and a washer, the wiring plate42ais connected to the electric collectors10aby means of bolts, nuts, elastic washers and washers; the other end of the cathode cable is connected to a short electric arc power.

The motor belt pulley65ais mounted on the main output shaft of the variable-frequency motor51aby means of a key63a, and the motor belt pulley65ais connected to a driven belt pulley33aby means of V-shaped belts64a. The adjustable variable-frequency motor51adrives the main cathode shaft11aand the tool electrode1afor a short electric arc processing of a work piece.

Cathode base1ais mounted on a base plate7aof the circulation tool by means of outside hex bolts52, washers53and L-sectioned steel54. It can move with base plate7aof circulation tool.

The Railway3bis mounted on a longitudinally movable base1bby means of a hexagon socket screw17band an elastic washer18band has four rail sliders10bconnected to an insulating base plate7bof the circulation tool by means of bolts. The railway3bhas two opposite end portions protruding over the hexagon bolt17band the elastic washer18bfor a position-limiting.

A back hand wheel22bis connected to the right end portion of the longitudinal lead screw34bby means of a key, two bearing housing seats38bare mounted on a machined surface of the longitudinally movable base1bby means of bolts. Two bearings48bare mounted in bearing the housing38and a bearing cap21bis mounted against each of the bearing housings to fix the bearings, the left end portion of the longitudinal lead screw34bis mounted on two the ball bearings48inside the bearing cap21bfor a free rotation. A Longitudinal nut seat9bis mounted on the longitudinal lead screw17band the longitudinally movable nut seat9bis mounted on the bottom of a transverse base6bby means of bolt31b. A longitudinal back-forth feeding motion can be realized when the longitudinal lead screw34bturns to drive the nut seat9band the transverse base6b. The right end portion of the longitudinal lead screw34bis mounted on the two bearings48bin the longitudinal bearing housing38bfor a free rotation. A scaled bearing cap44band a thrust bearing49bare mounted in the longitudinal bearing housing38bby means of bolts as shown, a scaled ring46bis mounted around the right end portion of the longitudinal lead screw34band fixed on the longitudinally movable lead screw34bby means of two locking round nuts47b. A tolerance is provided between the scaled ring46band the lead screw so that the scaled ring46bcan randomly look for position “0” on the longitudinal bearing housing38b. A locking bolt45bis screwed through the scaled ring46bfor locking the scaled ring against the lead screw when the alignment46bis confirmed. The right end of the longitudinal lead screw34bis fixed to the back hand wheel22bby means of a key for a manual rotation.

L-section steel bars28bare mounted on both sides of longitudinally the movable base1bby means of outside hex bolts26band washers27bfor a manual handling.

This structure is manually operated, i.e. rotation of the back hand wheel may achieve the movement of the transverse feeding assembly, and achieve manual operation. The hand wheel may be replaced by an adjustable-speed motor to achieve electrical control and automatic feeding.

Two bearing housings38bare mounted on the front and rear ends of the transverse base6band each of bearing housings38baccommodates two bearing48b. The Two front bearings48bare fixed in the bearing housing38bby means of a bearing cap46band the two rear bearings48bare fixed in the rear bearing housing48bby means of a scaled bearing cap44b. The Front and rear ends of the transverse lead screw32bare mounted on the inner racers of the bearing48bfor a free rotation. The Bearing48bshall be filled with a grease for lubrication and the front bearing housing38bis fit with the bearing cap21b. The Transverse lead screw32bis threaded through a nut seat9b, which is fixed to the circulation tool base7bby means of four bolts. When the transverse lead screw32brotates, the circulation tool base7bcan reciprocate. The Rear end of the transverse lead screw32bis equipped with a back hand wheel22bby means of a key. The Bearing housing38bis equipped with the scaled bearing cap44band a thrust bearing49b. A Scaled ring46bis mounted around the transverse lead screw32bwith a tolerance therebetween and can be locked on the transverse lead screw32bby means of two locking round nuts47b. The scaled ring46bcan randomly look for position “0” on the transverse scaled bearing cap44b. A Locking screw45bis threaded through the scaled to lock the scale ring46b. The right end of longitudinally movable lead screw34bis equipped with the back hand wheel22bby means of a key for a manual operation.

The railway11bis mounted on the transverse base6bby means of hexagon socket screws17band elastic washers18b. The railway11bhas four rail sliders10bconnected with the circulation tool base7bof an insulating material by means of bolts. Both ends of the railway11bprotrude above the hexagon bolt17band the elastic washer18bfor a position-limiting function.

5. Water Air Mixing System: Air-Liquid Flow Control System, Including Two Air Path System Embodiments:

The first embodiment: a water air mixing system for a portable pneumatic circulation tool: Y-shaped two-way fitting44e, water air mixture45e, Y-shaped quick connector46e, threaded barrel47e, water air mixture48e, air pump and water pump. Refer to 31A2025-1 and a pneumatic circulation tool as shown inFIG. 6.

Compressed air provided by the air pump is connected to the Y-shaped quick connector44through an air pipe. The Y-shaped quick connector44eprovides a discharged or used air for the Y-shaped quick connector46eof the water air mixture45ethrough an air pipe and it also provides a working medium of water air mixture through a water air nipple48eso as to recycle the used air. Water goes through T-shaped quick connector45ethrough water pipe and is distributed to two couples of Y-shaped quick connector46ewith water air mixture48e. Quick connector46eand water air mixture48eare connected through a threaded barrel47e. A Control valve may be used for adjusting an inflow water volume if necessary and water can come from a water pump or a tap water. Compressed air can be used to suck a water source through water air mixture48. The Produced water air mixture is used as a working medium.

The second embodiment: a water air mixing system for a movable pneumatic circulation device: including water pump, air pump, water pipe, air pipe, water air mixing device, and connectors. Refer to the figure for a circulation device.

The Cathode shield13eis equipped with a water air mixing device and adjustment device. The water air mixing device can be adjusted up/down and up/down according work needs.

As shown inFIG. 5, a hanging bracket for a short-electric arc discharging processing toolhanger comprises a rotatable chassis1d, a stand4d, an adjustable cantilever3d, a hanging means11d, a winch16d, a tension spring, a wire rope or reinforced fireproof rope, a pulley25dand pulley yoke28d, a safety buckle6d, a hanging ring9d, a supporting leg assembly23dand a locking pin24d.

The hanger comprises: a rotatable chassis1dcomprising a base22dand an upper wheel; the base22dis connected with the chassis by means of four bolts31dand elastic washers32dand the base22dhas a bore equipped with two bearings29dand30d. Such bearings support the upper wheel rotably.

The Chassis1dcomprises a connecting plate, one longer leg and two shorter legs perpendicular to each other, crossing the center of the connecting plate and welded to and along the connecting plate; there are four connecting holes in the connecting plate and the base22dis fixed to the chassis1dby means of these fore holes and four bolts31dand elastic washer32d; the wheel is provided with an axial shaft, a connecting plate, a stand tube and a reinforcing plate. The shaft is welded to one side of the connecting plate center, and the stand tube and the reinforcing plate are welded to another side of the connecting plate center. The shaft and the stand tube are co-axial with the connecting plate and the stand pipe is formed with two orthogonal through-holes for installation of the stand4d.

The Stand4dis fixed to the stand tube by means of nuts and bolts through the two orthogonal through-holes. The circulation device can be big or small, when overloaded, additional hanger may be needed to complete cleaning work of the short electric art.

The positive pole of a short electric are cutting power supply is connected to with a work piece through a cable, and the negative of the short electric are cutting power supply is connected with a tool electrode through another cable.

The anode device comprises an electric collecting shaft2clocated by an anode collecting ring, an anode collectors6c, an anode holder sleeve15c, an anode bearing housing16c, an anode connecting plate1c, an electric brush component3cand an electric brush bracket4cand a pressure spring5c.

This is a new type of add-on anode device suitable for on-site processing and random working conditions. In comparison with the previous anode device, this device can be added on the shaft end of the processing piece, the connection disk can be changed randomly according to the manner of working piece connection. In addition, it is compact and light, and it is easy to repair and serve. At the same time, the electricity collecting ring can be increased or reduced according to working needs. It also may be changed according to needs, inter-exchangeable and convenient to use.

The Anode collecting shaft2ccan be replaced after it is worn, without the need to completely scrap the whole anode device. This is an exchangeable anode device

The anode device comprises: an anode connecting plate1cconnected with one end portion of the anode collecting shaft2cby means of outside hex bolts and elastic washers40cand another end portion thereof is threaded with an anode holder sleeve15c. The thread may be levorotatory or dextral so as to prevent the anode holder sleeve15cand the anode collecting shaft2cfrom threading loose during operation.

A right end portion of the anode holder sleeve15cis mounted on a bearing17c. The anode holder sleeve15cand the bearing17care locked axially against another by means of a collar19so as to prevent the bearing17cfrom slipping off the anode holder sleeve15c. The Bearing17cis mounted in anode bearing housing16cby means of an anode bearing cap18cand hexagon socket screws22cso that the anode connecting plate1c, the anode collecting shaft2cand the anode holder sleeve15ccan rotate stably. A grease fitting21cis provided through the anode bearing cap18cto lubricate the bearing17c. A sealing ring20cis inserted between the anode bearing cap18cand the anode holder sleeve15c.

The anode connecting plate1c, the anode collecting shaft2cand the anode holder sleeve15care cylindrically hollow for a reduced eddy-current heating effect during operation and for a bigger radiating area is also increased to stabilize the operation. The anode connecting plate1c, the anode collecting shaft2cand the anode holder sleeve15ccan be adapted to various current and voltage parameters, and any of them can be replaced easily. The complete product will not be scrapped due to a non-functional part.

A couple of L-shaped feet29cis mounted with the anode bearing housing16cby means of outside hex bolts25c, nuts26c, washers27cand elastic washers28c. The feet29care used to fix the housing to a stationary base.

Three holder rods14care extended Left-wards from and with the anode bearing housing16c. A right end portion of each of the holder rods14cis threaded into the anode bearing housing16cand is fixed there with a nut, a washer and an elastic washer so as to prevent the holder rods14cfrom movements.

The Three holder rods14care fixed with two anode collectors6c. There may be one, two or more anode collectors6cand the number cab crease or increase depending on the work needs. The anode collectors6cand the holder rods are connected as follows: according to the position needs of the anode collecting shaft2c, firstly determining the positions of the positioning nut and washer (see drawings) and insulating gasket32cto make the nut and washer (see drawings) and insulating gasket on the same vertical plane; then installing three insulating sleeves31con the corresponding holes of the anode collectors6c, respectively; finally installing the assembly of insulating sleeves31cand anode collectors6con the holder rods14c, fixed through nuts37cand washers38c. The insulating sleeves, insulating washers, nuts and washers all are the same types, namely, nuts37c, washers39c, insulating sleeve31cand insulating gaskets32c.

According to design needs, each of the two anode collectors6care connected with an electric brush3cand an electric brush bracket4cand a pressure spring5cby means of a screw11c, a washer12cand a self-locking nut13c. Each of the Electric brushes3cis connected with the respective anode collector6through a copper wire and contacts frictionally the anode collecting shaft2cas pressed by the electric brush bracket4cand the pressure spring5c. The Anode collector6care connected with a wiring board30cby means of outside hexagon bolts33c, nut34c, washers35cand elastic washers36c. Another end of the wiring board30cis connected to the negative pole of the short-electric arc power supply through a cable.

An anode shield23chas an end portion mounted on the anode bearing housing16cby means of round head screw24c, and another end portion mounted on the anode connecting plate1cto shield any splash away from between the electric brush3cand the anode collecting shaft2cand avoid affecting short arc processing efficiency.

The present invention provides a portable arc processing system and a portable arc cutting method including a handheld arc tool (a portable pneumatic circulation tool for a short electric arc process), a short electric arc power supply, an air-liquid mixing system and an auxiliary system. The system is similar to the operation mode of using a sand wheel to process work pieces. The system achieves elimination of the work piece through electrodes continuously discharging with the work piece by short arc connection and disconnection, and through co-actions of the air-liquid mixing medium. The work piece and the tool electrode are respectively connected to one end of the output terminal of the short arch power source.

According to processing needs, the work piece and tool electrodes are connected by the positive and negative terminals and achieve random discharging. This solved the difficult problems of processing conductive materials that are hard to process with a high efficiency. The tool electrode can rotate in a high speed; the electrode may be shaped like a rod, a sphere, an oval, a wheel, a disk or a round tube, which can be installed like a chip or direct mounted.

Finally, the above description describes some particular embodiments of the present invention, and shall not limit the scope the present invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and, accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.