Abstract:
A toilet flushing method causes high-pressure flush water, provided by a flow pipe, to spray along the baffle in the bottom of the trap of a toilet bowl and causes the flush water used for washing the toilet bowl to spray into the toilet bowl. The high-pressure flush water discharges the egesta with water in order to supply sealing water to the trap. A toilet, which uses components for improving the prior art toilet, carries out the flushing method.

Description:
TECHNICAL FIELD 
     The present invention relates to the flushing method of toilet and the apparatus therefor. 
     BACKGROUND TECHNOLOGY 
     The sealing between the outlet of conventional toilet bowl and the sewer generally adopts a Z-shaped trap. The function of the trap is the sealing of water and prevention of escape of unpleasant odour from the sewer. The higher the trap is situated, the more water is stored and the tighter is the sealing. The egesta in the trap and the flushing water are to be discharged by means of the principle of siphon. The more water stored in the trap, the more difficult is the flushing and the more water is consumed. Moreover, the existing toilet is generally provided with a watertank, so the water source with a constant pressure provided by the converter pump or the water reservoir in high building can not be directly used. And as the components in the watertank of the toilet are subject to worn-out and damage, the phenomena of spilling and leaking would frequently occur, and also the toilet bowl is difficult to be cleanly flushed and the drain conduit is apt to be blocked up and form dirt. 
     SUMMARY OF INVENTION 
     The object of the present invention is to provide a flushing method of toilet which has auxiliary discharging and cleaning units in the trap. Another object of the present invention is to provide the toilet for carrying out the above-mentioned method. 
     A further object of the present invention is to provide the components for improving the existing toilet. 
     The flushing method of toilet of the present invention comprises the steps of spraying the high-pressure flush water that is provided by a flow pipe along the baffle of the toilet bowl in the bottom of the trap of the toilet bowl, spraying the flush water for washing the toilet bowl in said toilet bowl, and after said high-pressure efflux has discharged the egesta with the sealing water and the flushing water, supplying the sealing water to the trap. 
     The toilet of the present invention comprises a toilet bowl and a trap, a nozzle for producing a high-pressure efflux being provided at the bottom of the trap of the toilet near the juncture of the rear side-wall of the toilet bowl and the baffle, the orientation of this high pressure efflux being generally parallel to the extending direction of the baffle, the nozzle being in communication with a flushing control valve through an efflux communing pipe, the flushing control valve being in communication with a flow pipe, a water supply tank being in communication with the efflux communicating pipe and at least one nozzle for flushing the bowl being provided in the bowl, the nozzle being in communication with the flushing control valve through a flushing communicating pipe. 
     The toilet components of the present invention comprise an efflux nozzle for producing the high pressure efflux provided at the bottom of the trap of the toilet near the juncture of the rear side-wall of the toilet bowl and the baffle, the orientation of the high pressure efflux being generally parallel to the extending direction of the baffle; at least one flushing nozzle provided in the bowl for the use of flushing the bowl; a water intake pipe passing through the mounting hole on the bowl, said water intake pipe being in communication with the flushing control valve, said efflux nozzle and the flushing nozzle, said control valve being in communication with a flow pipe and a water supply tank communicating with the water intake pipe. 
     The further solution of the present invention is as follows: 
     The water supply tank has an air escape check valve; 
     The water supply tank is connected with a toilet cleaning agent charging unit. The charging unit has a toilet cleaning agent valve controlled by the pressure of the water supply tank to make the sealing water added to the trap containing toilet cleaning agent. 
     The efflux nozzle and the flushing nozzle are both connected to a base in which are provided an upper water supply passage and a lower water supply passage. A downward facing fan-shaped slot is provided at the front end of the base perpendicular to the direction of the axis of the base. The fan-shaped slot is in communication with the upper water supply passage and forms a fan-shaped nozzle for flushing the rear part of the bowl. An inclined jet orifice is provided behind the fan-shaped slot. The jet orifice is in communication with the lower water supply passage and forms a dashing nozzle for dashing away the egesta. The flushing nozzles are symmetrically disposed on the base. The flushing nozzles are in communication with the upper water supply passage and form a nozzle for flushing the two lateral sides and the front portion of the bowl. A water volume adjusting device is provided in the upper water supply passage. 
     The toilet components also include a decorative shield for the purpose of covering. 
     According to the present invention, a nozzle is provided in the trap to produce a high pressure efflux supplied by the flow pipe to quickly crush the egesta and discharge them into the sewer so to raise the flushing efficiency and reduce the water consumption. The volume of the flushing water is only one fifth of the normal consumption. The crushed egesta will not be susceptible to adhering to the drain conduit so blocking up will rarely occur. As the water tank is dispensed with and the number of components is reduced, the phenomena of spilling and leaking caused by damage of the water tank components will be put an end to and much of the space in the toilet room can be saved. This saved space can be used for installing an armchair or a cabinet etc. Since the consumption of the supplying water is scanty, so is the toilet cleaning agent added to the supplying water for eliminating dirts and odour. 
    
    
     BRIEF DESCRIPTION OF THE DRAWING 
     FIG. 1 is a partial cutaway plan view of the toilet of the present invention. 
     FIG. 2 is a sectional view taken along line I—I in FIG.  1 . 
     FIG. 3 is a sectional view taken along line II—II in FIG.  1 . 
     FIGS. 4 and 5 are schematic views showing the operation states of the air escape chick valve employed in the water supply tank according to the present invention respectively. 
     FIG. 6 is a perspective view of the water supply tank with a toilet cleaning agent charging unit according to the present invention. 
     FIG. 7 is a sectional view of the water supply tank and the toilet cleaning agent charging unit. 
     FIG. 8 is a plan view of FIG.  6 . 
     FIG. 9 is an enlarged sectional view of the toilet cleaning agent shown in FIG.  7 . 
     FIG. 10 is an enlarged sectional view of an alternative embodiment of the charging unit shown in FIG.  9 . 
     FIG. 11 is a side view of a nozzle employed by the present invention. 
     FIG. 12 is a front sectional view of the nozzle shown in FIG.  11 . 
     FIG. 13 is a sectional view of a toilet with the toilet components of the present invention. 
     FIG. 14 is a sectional view taken along the line III—III in FIG.  13 . 
     FIG. 15 is a sectional view of the toilet components of the present invention. 
     FIG. 16 is a right view of the toilet shown in FIG.  15 . 
     FIG. 17 is a left view of the toilet shown in FIG.  15 . 
     FIG. 18 is sectional view of a toilet with another kind of toilet components of the present invention. 
     FIG. 19 is a sectional view taken along the line IV—IV in FIG.  18 . 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to FIGS. 1 and 2, the toilet of the present invention comprises a toilet bowl  1  and a trap  12 . Trap  12  is constituted of rear side-wall  15  of bowl  1 , baffle  16  and the front side-wall  14  of the bowl. The baffle  16  and the bottom board  17  of the toilet constitute the drain passage  13 . The drain passage  13  is connected with a drain conduit (not shown). A nozzle  7  producing a high pressure efflux is provided at the bottom of the trap  12  of the toilet near the juncture of the rear side-wall  15  of the toilet bowl  1  and the baffle  16 , and the orientation of the high pressure efflux is generally parallel to the extending direction of the baffle  16 . The nozzle  7  being in communication with a flushing control valve  3  through an efflux communicating pipe  8 , the flushing control valve  3  being in communication with a flow pipe  2 . In the tank body  11  is provided a water supply tank  4  the volume of which is equivalent to the volume of water being stored in the trap  12  and generally less than {fraction (1/10)} of the volume of a conventional toilet water tank. The water supply tank  4  has an inlet  19 , which is in communication with the efflux communicating pipe  8 . In bowl  1  is provided a flushing nozzle  5  for flushing bowl  1 , the mounting angle of which is adjustable to be adjusted according to different water pressure. Said nozzle  5  can be any nozzle which can adjust the direction of the flushing water. In the present embodiment, there are two nozzles  5 , one provided at the front end and the other at the rear end, flushing nozzle  5  being in communication with the flushing control valve  3  through a flushing communicating pipe  6 . The flushing communicating pipe  6  is mounted within the circulating conduit  10 , which is formed around the upper rim of bowl  1 . The control valve  3  and the water supply tank  4  are installed in the tank body  11 , which is in communication with the circulating conduit  10 . The control valve  3  might be a valve with one inlet and two outlets, that is, it has one inlet communicating with flow pipe  2  and two outlets which communicate respectively with the flushing communicating pipe  6  and the efflux communicating pipe  8 . The control valve  3  might also be a valve with one inlet and one outlet, that is, it has one inlet communicating with flow pipe  2  and one outlet communicating with both the flushing communicating pipe  6  and the efflux communicating pipe  8 . A rotating handle  9  is used for controlling the opening and closing of the flushing control valve  3 . 
     Referring to FIGS. 3-5, the water supply tank  4  has an air escape check valve  18  mounted on the top of the water supply tank  4 . This valve  18  has a sleeve  20 . A fluid inlet  21  is provided at the bottom of the sleeve  20  which is connected with the housing of the water supply tank  4 . A valve seat  25  which has a through hole  26  is mounted in the sleeve  20 . A valve core  22  which is connected with a guide-bar  23  passing through the through hole  26  is also provided in the sleeve  20 . The guide-bar is fitted over by a spring  24 . One end for the spring  24  is connected to the valve seat  25  and the other end is connected to the guide bar  23 . The valve core  22  can close the through hole  26 . FIG. 4 shows the state that the valve core  22  has closed the through hole  26  when the water supply tank  4  is full of water and FIG. 5 shows the state when the through hole  26  is opened. 
     Referring to FIGS. 6-8, the water supply tank  4  of the present invention has a toilet cleaning agent charging unit  30 . The charging unit  30  has a toilet cleaning agent valve  31  controlled by the pressure in the water supply tank  4  to make the sealing water supplied to the trap containing toilet cleaning agent. The charging unit  30  is installed in the storage tank  27 . 
     Referring to FIG. 7, in the embodiment shown in FIG. 7, the air escape check valve  18  has a sleeve  20  at the bottom of which is provided a fluid inlet  21 . The sleeve  20  is connected to the housing of the water supply tank. A valve seat  28  is mounted in the sleeve  20 . A through hole  26  is provided in the valve seat  28 . A floating ball  29  for closing the through hole  26  is provided in the sleeve  20 . 
     Referring to FIG. 9, the toilet cleaning agent valve  31  mounted in the shell body  33  of the charging unit  30  has a guide pipe  32  and a cylinder body  36 . One end of the guide pipe  32  is in communication with the water supply tank  4  and the other end by which the guide pipe  32  is connected to the shell body  33  has a vertically upward pipe segment  34 . 
     A partition board  35  having a through hole  46  is provided between the pipe segment  34  and cylinder body  36 . A stop block  38  with a hole is provided on the top of the cylinder body  36  and an inlet  37  for the toilet cleaning agent is provided at the bottom of the cylinder body  36 . A bolt  42  is inserted into the pipe segment  34  through the hole on the stop block  38  and the through hole  46  on the partition board  35 . A piston piece  40 , a sealing gasket  41  and a spring  39  is mounted on the bolt  42  disposed in the cylinder body  36 . A piston piece  44 , a sealing gasket  43  and a nut  45  is mounted on the bolt  42  disposed in the pipe segment  34 . 
     FIG. 10 shows an alternative embodiment of the charging unit of FIG.  9 . In this embodiment, the same parts as shown in FIG. 9 are indicated by the same reference numerals. The difference between this embodiment and the embodiment shown in FIG. 9 is that the bolt  42  is replaced by a screw rod  47 . The upper and lower ends of screw rod  47  are respectively connected with spherical pistons  48  and  49 , and recesses to engage with the spherical pistons  48  and  49  are provided on the partition board  35 . 
     FIGS. 11 and 12 show a flushing nozzle  5  employed by the present invention. This flushing nozzle  5  has a three-way base  50  which has one inlet and two outlets. Each of the outlets is fitted with a flushing pipe  51 . Flushing orifices are opened lengthwise on the pipes  51 , and the ends of the pipes  51  are crushed to form narrow slit nozzles  52 . Female thread is provided in the two outlets of the base  50  and male thread is provided on the pipes  51 . Nuts  54  are provided on pipes  51 , and the pipe  51  is fixed in the base  50  by the nuts  54 . 
     FIGS. 13 and 14 are schematic views showing the assemblage of the toilet components of the present invention to improve the prior art toilet. The toilet bowl  1  shown in the drawing is a bowl of the conventional type. The same reference numerals in the drawings indicate the same parts or similar locations. 
     In the embodiment shown in FIGS. 13 and 14, the toilet components  60  of the present invention comprise: an efflux nozzle  64  producing the high pressure efflux provided at the bottom of the trap of the toilet near the juncture of the rear sidewall of the toilet bowl  1  and the baffle  16 , the orientation of the high pressure efflux being generally parallel to the extending direction of the baffle  16 ; two flushing nozzles  65  for flushing the bowl provided in the bowl  1 ; a base  61  for connecting the efflux nozzle  64  and with the flushing nozzle  65 ; a water intake pipe  72  passing through the mounting hole  73  on the bowl, one end of the water intake pipe  72  communicating with the flushing control valve  3  and the other end communicating with the base  61 , the control valve  3  communicating with a flow pipe  2 ; and a water supply tank  4  communicating with the water intake pipe  72 , which the water supply tank  4  can be the water supply tank described above and employ corresponding accessories. 
     The toilet components also include a decorative shield  69  for the purpose of covering. It is employed to cover over the whole bowl  1  except the portion where the nozzle orifice should be exposed. 
     In the conventional toilet bowl, some of the baffles  16  have depression  76  at the lower end. The function of such depression is to retain more water. However, this depression is disadvantageous to the flow of the efflux, hampering the discharge of the egesta. For this reason, a water deflecting plate  70  is provided by the present invention, which can be put over the deppression  76  by means of adhesives or the like. 
     Referring to FIGS. 15-17, an upper water supply passage  62  and a lower water supply passage  63  are provided in the base  61 . A downward facing fan-shaped slot  66  is provided at the front end of the base perpendicular to the direction of the axis of the base. The fan-shaped slot  66  is in communication with the upper water supply passage  62 , and form a fan-shaped nozzle  66  for flushing the rear part of the bowl. An inclined jet orifice  67  is provided behind the fan-shaped slot  66 . The jet orifice  67  is in communication with the lower water supply passage  63 , and form a dashing nozzle  67  for dashing the egesta out. Two symmetrically arranged flushing nozzles  65  are also provided on the base  61 . The flushing nozzles  65  are in communication with the upper water supply passage  62 , and form nozzles for flushing two lateral sides and the front part of the bowl. A water volume adjusting device  68  is provided in the upper water supply passage  62 . 
     What is described in FIGS. 18 and 19 is an alternative embodiment of the components for improved toilet of the present invention, the parts identical with those of the above embodiment are indicated by the same reference numericals. The different between the present embodiment and the embodiment shown in FIGS. 13-17 is the structure and layout of the flushing nozzle. In this embodiment, the efflux communicating pipe  72  is inserted in the refitted hole opened on bowl  1 . A communicating base  81  is mounted on the end portion of the efflux communicating pipe  72 . On the communicating base  81  is fitted a nozzle  80  for flushing the bottom of the bowl and the trap  12 . An efflux nozzle  65  is in communication with the communicating base  81 . The mounting pattern of this nozzle  65  is the same as that shown in FIGS. 13 and 14. A decorative shield  69  covers over the nozzle  65  and the communicating base  81 . Obviously, the shield  69  should not hamper the orifice of the nozzle. The efflux communicating pipe  72  also communicates with water supply tank  4  and flushing communicating pipe  6 . The flushing communicating pipe  6  is inserted in the circulating conduit  10  formed around the upper rim of bowl  1 . Openings are provided at appropriate locations on the conduit  10  and nozzles  5  whose mounting angles are adjustable are mounted on the flushing communicating pipe  6  through the openings. The efflux communicating pipe  72  communicates with the flow pipe  2  by way of the flushing control valve  3 . 
     The following is a description of the process of operation of the present invention. 
     Referring to FIGS. 1-3, when bowel movement or urination is finished, a man turns the rotating handle  9  to open the flushing control valve  3 , so shat water under pressure rushes respectively into the efflux communicating pipe  8  and flushing communicating pipe  6 , then from communicating pipes  6  and  8  to nozzles  5  and  7  and water supply tank  4  as well. As the pressurized water entering the water supply tank  4  meets with the least resistance, water first enters the water supply tank  4 . When water rises to a certain height, it will enter the sleeve  20  through the inlet  21  and push the valve core  22  upward until it blocks the through hole  26 , and at the same time, the pressurized water is sprayed out from nozzles  5  and  7 . The nozzle  5  is used for flushing the interior of the bowl  1 , which nozzle  7  produces the flushing water with high spraying speed. 
     At a static state, the water in the trap cuts the toilet off from the sewer, achieving good effect of sealing and odour cut off. When the trap is in the working state, the efflux from nozzle  7  washes the egesta in the trap to the entrance  13  of the sewer. Under the high speed spray of flushing water, the negative pressure in the trap caused by the efflux pulls the egesta along with water rapidly into the sewer. When the control valve  3  is closed, the water in the water supply tank  4  flows out from the opening  19  and enters the trap  12  to form a water seal. 
     When using the toilet cleaning agent charging unit  30  shown in FIGS. 6-8 and the water supply tank  4  is stored with water, the pressurized water pushes forward the piston for allowing the toilet cleaning agent in the toilet cleaning agent charging unit  30  flow into the pipe segment  34 . When the control valve  3  is closed, the water in the water supply tank  4  flows out from the opening  19  and enters the trap  12  along with the toilet cleaning agent to form a water seal with toilet cleanit agent. So achieve the object of eliminating the filth and odour in the trap. 
     The working principle of other embodiments of the present invention is essentially the same as the above-stated principle, so it is unnecessary to go into details. 
     The basic principle of the present invention has been described above by way of embodiments, yet those skilled in the art will clearly understand that various modifications may be made without departing from the inventive conception of the present invention; all these modifications should be within the scope of the conception of the present invention.