WATER HAMMER ABSORPTION DEVICE AND MANUFACTURING METHOD OF SAME

A water hammer absorption device is provided with a movable water plug inside a water hammer pipe; the both ends of the water hammer pipe are respectively connected with a joint and cover, where the joint is connected to a connecting pipe, and the cover closes the water hammer pipe, it is characterized in that the inside of the water hammer pipe opposite to the joint is provided with non-return diaphragm adapted to close the internal part of the water hammer pipe, the non-return diaphragm prevents the high-pressure air from leaking out, and the side of the water hammer pipe having the non-return diaphragm is closed through the cover to strengthen the airtightness of the internal space.

(a) TECHNICAL FIELD OF THE INVENTION

The present invention relates to a water hammer absorption device, mainly using a non-return diaphragm on the side of the device where the high-pressure air is injected, so as to simplify the structure of the water hammer absorption device and achieve the manufacturing and using convenience.

(b) DESCRIPTION OF THE PRIOR ART

In the pressure pipeline, due to the change of the liquid flow rate, the liquid pressure in the pipe has significant and repeated changes, and the hammering phenomenon occurs on the pipeline. Since the pressure in the pipeline is increased, it will exceed the normal pressure in the pipe, and the repeatedly changed pressure forms the pulse with damaging force, which causes vibration and noise in the pipeline and equipment.

To solve the above noise and vibration problems, one side of the inlet pipe is equipped with a water hammer absorber, the structure of which fundamentally has a hollow pipe body, piston, joint and cover.

Upon manufacturing, the piston is assembled with the hollow pipe body, and the joint and cover are next respectively provided on the two ends of the hollow pipe body. Furthermore, the joint is used to install the water hammer absorber on an inlet pipe; one end of the cover is further provided with an air nozzle, which can be operated in coordination with a spring to inject high pressure air into the hollow pipe body from one side of the air nozzle. When the high-pressure air is removed from one side of the air nozzle, the spring rebounds to close the air nozzle.

However, the conventional product has the following disadvantages:1. the air nozzle is apt to be collided to damage to cause the air to leak since the air nozzle is exposed outside the cover; and2. the water hammer absorber will fail after the high-pressure air leaks out since the structure of the water hammer absorber of the air nozzle is relatively complicated, and the spring will have the problem of elastic fatigue.

SUMMARY OF THE INVENTION

The main object of the present invention is to provide a water hammer absorption device, using a non-return diaphragm to replace the original air nozzle, allowing the water hammer absorption device to have no a exposed air nozzle, and preventing operation collision to damage. In addition, the non-return diaphragm is low in cost and easy in assembly, and can greatly simplify the structure of the water hammer absorption device.

To achieve the above object, the present invention proposes a water hammer absorption device, provided with a movable water plug slidable inside a water hammer pipe, both ends of the water hammer pipe respectively in connection with a joint and cover, the joint adapted to be connected with a connecting pipe, and the cover closing the water hammer pipe, characterized in that: a bottom wall is provided inside the side of the water hammer pipe opposite to the joint, the bottom wall is provided with a mounting hole and a plurality of filling holes, a non-return diaphragm is assembled inside the water hammer pipe, the non-return diaphragm is adapted to shield the filling holes of the bottom wall of the water hammer pipe, and the non-return diaphragm is provided with a rod configured in the mounting hole; high-pressure air is removed after injected into an internal space of the water hammer pipe, allowing high pressure to be generated inside the water hammer pipe, and the non-return diaphragm to attach to and cover the bottom wall and the plurality of filling holes, preventing the high-pressure air from leaking out, and closing the side of the water hammer pipe having non-return diaphragm through the cover, thereby strengthening the airtightness of the internal space.

According to the device mentioned above, the movable water plug is sleeved with a plurality of water-stop rubber rings.

According to the device mentioned above, the joint is connected to the water hammer pipe by means of rotary welding, welding or screwing.

According to the device mentioned above, the joint is provided with a turn part allowing the joint to be turned to fix to the connecting pipe with a wrench or tool.

The present invention further proposes a method for manufacturing the water hammer absorption device, including the following steps:inserting non-return diaphragm into the water hammer pipe from the side thereof opposite to the bottom wall, and sleeving the rod of the non-return diaphragm in the mounting hole;inserting the movable water plug into the water hammer pipe from the side opposite to the bottom wall;assembling and fixing the joint to the side of the water hammer pipe opposite to the bottom wall;injecting high-pressure air into the interspace of the water hammer pipe from the plurality of filling holes, and thereafter, removing the high-pressure air from the plurality of filling holes, allowing the internal space to generate an air chamber effect to cause the non-return diaphragm to be deformed to attach to the bottom wall11, preventing the high-pressure air of the internal space form leaking out; andassembling and fixing the cover to the side of the water hammer pipe opposite to the joint, so that the assembly of the water hammer absorption device can then be completed.

The present invention has the following advantages compared to the prior art:1. the present invention has no design such as air nozzle, greatly simplifying the structure of the water hammer absorption device;2. the present invention uses the design of the non-return diaphragm, not easily generating elastic fatigue, and preventing the high-pressure air from leaking out to cause the failure of the water hammer absorption device; and3. the present invention is low in production cost, and highly reliable in quality.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring toFIGS.1to3, a water hammer absorption device of the present invention is provided with an movable water plug20slidable within a water hammer pipe10, and the both ends of the water hammer pipe10are respectively connected with a joint30and cover40, where the joint30is used to connect to a connecting pipe (not shown in the figures), and the cover40close the water hammer water hammer pipe10.

According to the present invention, the movable water plugs20, in a preferred embodiment, is further sleeved with several water-stop rubber rings21used to increase the airtightness of the internal space of the water hammer tube10.

Furthermore, the joint30, cover40of the present invention, according to the material of the water hammer pipe10, may be connected to the water hammer pipe by means of rotary welding (plastics), welding (metal material), or screwing (physical connection).

Furthermore, the joint30of the present invention may be a structure with internal threads or external threads, or it may be provided with a turn part31, which makes it convenient to be turned with a tool or wrench.

Referring toFIGS.1to3again, the water hammer pipe is provided with a bottom wall11on the side opposite to the joint30, and the bottom wall11is provided with a mounting hole12and a plurality of filling holes13. Furthermore, the inside of the water hammer pipe10is assembled with a non-return diaphragm50adapted to shield the filling hole13of the bottom wall11of the water hammer pipe10, where the non-return diaphragm50is provided with a rod51configured on the mounting hole12.

Referring toFIGS.1to3once again, high-pressure air is removed after injected into the internal space of the water hammer pipe10from the plurality of filling holes, allowing the internal part of the water hammer pipe10to generate high pressure to attach to the non-return diaphragm50to cover the bottom wall11and the plurality of filling holes, thereby preventing the high-pressure air from leaking out, and closing the side having the non-return diaphragm50to strengthen the airtightness of the internal space.

The above is the introduction of each part of the present invention, and the following will introduce the assembly method of the present invention and the advantages that can be obtained:Step 1: inserting non-return diaphragm50into the water hammer pipe10from the side thereof opposite to the bottom wall11, and engaging the rod51of the non-return diaphragm50in the mounting hole12asFIG.4shows;Step 2: inserting the movable water plug20into the water hammer pipe10from the side opposite to the bottom wall11asFIG.4shows, where Step 1 and Step 2 can be integrated in the same step;Step 3: assembling and fixing the joint30to the side of the water hammer pipe opposite to the bottom wall11asFIG.5shows, where the joint30can be coupled to the water hammer pipe10by means of the assembly way mentioned above;Step 4: injecting high-pressure air into the interspace of the water hammer pipe from the plurality of filling holes13, and thereafter, removing the high-pressure air from the plurality of filling holes13, allowing the internal space to generate an air chamber effect to cause the non-return diaphragm50to be deformed to attach to the bottom wall11asFIG.6shows, preventing the high-pressure air of the internal space form leaking out; andStep 5: assembling and fixing the cover40to the side of the water hammer pipe opposite to the joint30asFIG.7shows, so that the assembly of the water hammer absorption device can then be completed.

With the design of the present invention, using the non-return diaphragm to replace the original air nozzle allows the water hammer absorption device to have no exposed air nozzle, thereby preventing operation collision to damage. In addition, the non-return diaphragm is low in cost and easy in assembly, and can greatly simplify the structure of the water hammer absorption device.