Water hammer preventing valve body structure

Abstract

The invention discloses a waterproof hammer valve body structure, and relates to the technical field of valve bodies, the waterproof hammer valve body structure mainly comprises a valve body and a waterproof hammer assembly, the water outlet end of the valve body is communicated with a buffer port, the waterproof hammer assembly is located on the outer side of the buffer port, the waterproof hammer assembly comprises an elastic membrane and a supporting piece, and the elastic membrane seals the buffer port under the action of the supporting piece. The interior of the supporting piece is a cavity, the elastic membrane and the cavity in the supporting piece define a buffering cavity, and the buffering opening and the buffering cavity are arranged on the two sides of the elastic membrane respectively. The water hammer effect in the valve body is improved, and particularly, the water hammer effect is applied to a multifunctional valve body, the needed space is small, and the improvement effect is good.

Description

Technical Field

[0001] This invention relates to the field of valve body technology, and in particular to a valve body structure for preventing water hammer. Background Technology

[0002] Currently, the water hammer effect refers to the phenomenon where, inside a water pipe with a smooth inner wall, water flows freely. At the moment a valve is opened or closed, the water flow exerts pressure on the valve body and pipe wall, primarily on the valve itself. At the moment the valve is closed, due to the smooth pipe wall, the subsequent water flow, under the influence of inertia, rapidly reaches its maximum and causes damage—this is positive water hammer. Conversely, at the moment the valve is opened, a vacuum negative pressure is formed inside the pipe—this is negative water hammer.

[0003] In multi-functional shower controllers, the rapid opening or closing of the multi-functional valve core generates an impact effect (i.e., water hammer effect) in the pipes. Traditional structures for reducing water hammer effect are ineffective and take up a lot of space, so improvements are needed. Summary of the Invention

[0004] To address the problems existing in the prior art, the purpose of this invention is to provide a water hammer valve body structure that can improve the water hammer effect in the valve body, especially in the application of multifunctional valve bodies, requiring little space and achieving good improvement results.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A water-resistant hammer valve body structure includes a valve body body and a water-resistant hammer assembly. The outlet end of the valve body body is connected to a buffer port. The water-resistant hammer assembly is located outside the buffer port. The water-resistant hammer assembly includes an elastic diaphragm and a support member. The elastic diaphragm closes the buffer port under the action of the support member. The support member has an internal cavity. The elastic diaphragm and the internal cavity of the support member enclose a buffer cavity. The buffer port and the buffer cavity are respectively located on both sides of the elastic diaphragm.

[0007] By adopting the above technical solution, the combined effect of the anti-water hammer assembly, elastic diaphragm, and support component on one side of the valve body can effectively improve the water hammer effect. At the moment the valve core on the valve body opens, a vacuum negative pressure is formed in the pipeline. This pulls the elastic diaphragm towards the inside of the pipeline, causing elastic deformation. The air pressure in the buffer chamber decreases, creating a negative pressure reaction force on the elastic diaphragm. The elastic deformation of the diaphragm, combined with the negative pressure reaction force of the buffer chamber, absorbs and buffers the negative pressure of the water in the channel. At the moment the valve core on the valve body closes, the water flow creates positive pressure in the channel. The impact water pressure pushes the elastic diaphragm towards the buffer chamber, causing elastic deformation. The gas in the buffer chamber is compressed, increasing the pressure and providing a certain counter-force to the elastic diaphragm. The elastic deformation of the diaphragm, combined with the positive pressure reaction force of the buffer chamber, absorbs and buffers the positive pressure of the water in the channel. This effectively combines the elastic diaphragm with the buffer cavity to improve the water hammer effect within the valve body. Furthermore, the water hammer prevention assembly has a compact structure and occupies little space, making it particularly suitable for applications in multifunctional valve bodies where space is limited.

[0008] In one possible implementation, the valve body is provided with a mounting part, and the mounting part is provided with a mounting cavity for mounting the waterproof hammer assembly. The outer port of the mounting part is provided with a cover. When the cover is locked and fixed to the outer port of the mounting part, the elastic diaphragm is sealed against one side of the buffer port, one end of the support abuts against the elastic diaphragm, and the other end abuts against the cover.

[0009] By adopting the above technical solution, the installation part and the cover are designed to facilitate the disassembly and replacement of the waterproof hammer assembly.

[0010] In one possible implementation, a collar is further provided on the periphery of the elastic diaphragm, and the collar is sleeved onto the upper end of the support member.

[0011] By adopting the above technical solution, the replacement setting facilitates the positioning and fixing of the elastic diaphragm, while improving the connection stability between the elastic diaphragm and the support.

[0012] In one possible implementation, the outer wall of the support member is provided with a barb portion, and the inner side of the collar is provided with a barb groove that engages with the barb portion.

[0013] By adopting the above technical solution, the connection stability between the collar and the support is further improved by utilizing the limiting effect of the barb and the barb groove.

[0014] In one possible implementation, the outer wall of the collar is provided with at least one first sealing ring that surrounds the circumference of the collar axis, and the first sealing ring is sealed to the inner wall of the mounting part.

[0015] By adopting the above technical solution, the sealing performance of the mounting cavity is improved by utilizing the sealing connection between the first sealing ring on the periphery of the collar and the inner wall of the mounting part, thus reducing water leakage from the mounting part.

[0016] In one possible implementation, the outer wall of the support member is provided with at least one annular groove, and a second sealing ring is fitted into the annular groove, the second sealing ring being sealed to the inner wall of the mounting part.

[0017] By adopting the above technical solution, the ring groove facilitates the installation of the second sealing ring, and the second sealing ring will further ensure the sealing performance within the installation section.

[0018] In one possible implementation, the upper port of the cover is provided with a third sealing ring, the inner wall of the third sealing ring is sealed to the outer wall of the mounting part, and the third sealing ring is connected to the cover by a keyway.

[0019] By adopting the above technical solution, the setting of the third sealing ring will further ensure the sealing between the cover and the mounting part, and the keyway connection structure will facilitate the installation of the third sealing ring.

[0020] In one possible implementation, the elastic diaphragm is made of silicone with a hardness of 45°-60°A and a thickness of 2mm-3mm.

[0021] By adopting the above technical solution, the elastic diaphragm has the best buffering and energy absorption effect when it is made of silicone material with a hardness of 45°-60°A and a thickness of 2mm-3mm.

[0022] Compared with the prior art, the advantages of this invention are:

[0023] 1. By setting a water hammer prevention assembly on one side of the valve body, the elastic deformation of the elastic diaphragm combined with the pressure reaction force of the buffer cavity is used to absorb and buffer the water pressure in the channel. In this way, the water hammer effect in the valve body is improved by effectively combining the elastic diaphragm and the buffer cavity. Moreover, the water hammer prevention assembly has a compact structure and occupies little space, making it especially suitable for applications in multi-functional valve bodies where space is limited.

[0024] 2. By setting up collars and barbs, the installation stability of the elastic diaphragm is further improved. The first sealing ring, the second sealing ring and the third sealing ring are set up to improve the installation sealing performance of the waterproof hammer assembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the waterproof hammer valve body according to an embodiment of this application;

[0026] Figure 2 This is a partial cross-sectional schematic diagram of the waterproof hammer valve body according to an embodiment of this application;

[0027] Figure 3 This is an exploded view of the waterproof hammer assembly according to an embodiment of this application.

[0028] Explanation of the labels in the diagram:

[0029] 1. Valve body; 2. Water hammer assembly; 21. Elastic diaphragm; 22. Support; 3. Buffer port; 4. Buffer cavity; 5. Mounting part; 6. Mounting cavity; 7. Cover; 8. Collar; 9. Barb part; 10. Barb groove; 11. First sealing ring; 12. Ring groove; 13. Second sealing ring; 14. Third sealing ring; 15. Keyway; 16. Key block. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses a structure for a water hammer prevention valve body. (Refer to...) Figures 1-3 As shown, it mainly includes a valve body 1 and a water hammer prevention assembly 2. The outlet end of the valve body 1 is connected to a buffer port 3. The water hammer prevention assembly 2 is located outside the buffer port 3. The water hammer prevention assembly 2 includes an elastic diaphragm 21 and a support member 22. The elastic diaphragm 21 closes the buffer port 3 under the action of the support member 22. The support member 22 has a hollow interior. The elastic diaphragm 21 and the hollow interior of the support member 22 enclose a buffer cavity 4. The buffer port 3 and the buffer cavity 4 are respectively located on both sides of the elastic diaphragm 21. In this embodiment, the support member 22 is made of POM and is cylindrical.

[0032] Furthermore, the outlet end of the valve body 1 is set at a right angle, and the valve body 1 is provided with an installation part 5 in the opposite direction to the outlet. The installation part 5 is provided with an installation cavity 6 for installing the water hammer assembly 2. The installation cavity 6 can be connected to the internal channel of the valve body 1 through the buffer port 3. The outer port of the installation part 5 is threadedly connected with a cover 7. When the cover 7 is locked and fixed to the outer port of the installation part 5, the elastic diaphragm 21 is sealed against one side of the buffer port 3, one end of the support member 22 abuts against the elastic diaphragm 21, and the other end abuts against the cover 7.

[0033] Furthermore, a collar 8 is integrally formed around the periphery of the elastic diaphragm 21, and the collar 8 is fitted onto the upper end of the support member 22. A barb portion 9 is integrally formed on the outer wall of the support member 22, and a barb groove 10 is provided on the inner side of the collar 8 to engage with the barb portion 9. At least one first sealing ring 11 is provided on the outer wall of the collar 8, circumferentially arranged along the axis of the collar 8. The first sealing ring 11 is sealed to the inner wall of the mounting part 5; in this embodiment, two first sealing rings 11 are provided.

[0034] The outer wall of the support member 22 is formed with at least one annular groove 12. In this embodiment, two annular grooves 12 are provided. The annular groove 12 is fitted with a second sealing ring 13, and the second sealing ring 13 is sealed to the inner wall of the mounting part 5.

[0035] A third sealing ring 14 is installed on the upper port of the cover 7. The inner wall of the third sealing ring 14 is sealed to the outer wall of the mounting part 5. The third sealing ring 14 is connected to the cover 7 by a keyway 15. The upper end of the cover 7 is provided with a keyway 15 around its axis. The lower end of the third sealing ring 14 is provided with several key blocks 16 that cooperate with the keyway 15.

[0036] In this embodiment, the elastic diaphragm 21 is made of silicone with a hardness of 45°-60°A and a thickness of 2mm-3mm, which provides optimal buffering and energy absorption.

[0037] The implementation principle of the waterproof hammer valve body structure in this application embodiment is as follows: At the moment the valve core on the valve body 1 opens, a vacuum negative pressure will be formed in the pipeline. At this time, the elastic diaphragm 21 will be pulled to deform elastically towards the inside of the pipeline. The air pressure in the buffer cavity 4 will decrease, and there will be a negative pressure reaction force on the elastic diaphragm 21. Then, the elastic deformation of the elastic diaphragm 21 combined with the negative pressure reaction force of the buffer cavity 4 will absorb and buffer the negative pressure of the water in the channel. At the moment the valve core on the valve body 1 closes, the water flow will form a positive pressure in the channel. The impact water pressure will push the elastic diaphragm 21 to deform elastically towards the buffer cavity 4. The gas in the buffer cavity 4 will be compressed, the pressure will increase and give the elastic diaphragm 21 a certain counter-thrust force. Then, the elastic deformation of the elastic diaphragm 21 combined with the positive pressure reaction force of the buffer cavity 4 will absorb and buffer the positive pressure of the water in the channel.

[0038] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A valve body structure for preventing water hammer, characterized in that, The device includes a valve body (1) and a water-resistant hammer assembly (2). The outlet end of the valve body (1) is connected to a buffer port (3). The water-resistant hammer assembly (2) is located outside the buffer port (3). The water-resistant hammer assembly (2) includes an elastic diaphragm (21) and a support member (22). The elastic diaphragm (21) closes the buffer port (3) under the action of the support member (22). The support member (22) has a cavity inside. The elastic diaphragm (21) and the cavity inside the support member (22) enclose a buffer cavity (4). The buffer port (3) and the buffer cavity (4) are respectively located on both sides of the elastic diaphragm (21).

2. The water hammer valve body structure according to claim 1, characterized in that, The valve body (1) is provided with a mounting part (5), and the mounting part (5) is provided with a mounting cavity (6) for mounting the waterproof hammer assembly (2). The outer port of the mounting part (5) is provided with a cover (7). When the cover (7) is locked and fixed to the outer port of the mounting part (5), the elastic diaphragm (21) is sealed against the side of the buffer port (3), one end of the support member (22) abuts against the elastic diaphragm (21), and the other end abuts against the cover (7).

3. The water hammer valve body structure according to claim 2, characterized in that, The elastic diaphragm (21) is also provided with a collar (8) around its periphery, and the collar (8) is sleeved onto the upper end of the support member (22).

4. The water hammer valve body structure according to claim 3, characterized in that, The outer wall of the support member (22) is provided with a barb part (9), and the inner side of the collar (8) is provided with a barb groove (10) that cooperates with the barb part (9).

5. The waterproof hammer valve body structure according to claim 3, characterized in that, The outer wall of the collar (8) is provided with at least one first sealing ring (11) around the axis of the collar (8), and the first sealing ring (11) is sealed to the inner wall of the mounting part (5).

6. The waterproof hammer valve body structure according to claim 2, characterized in that, The outer wall of the support member (22) is provided with at least one annular groove (12), and a second sealing ring (13) is sleeved on the annular groove (12). The second sealing ring (13) is sealed to the inner wall of the mounting part (5).

7. The waterproof hammer valve body structure according to claim 2, characterized in that, The upper port of the cover (7) is provided with a third sealing ring (14), the inner wall of the third sealing ring (14) is sealed to the outer wall of the mounting part (5), and the third sealing ring (14) and the cover (7) are connected by a keyway (15).

8. The water hammer valve body structure according to claim 1, characterized in that, The elastic diaphragm (21) is made of silicone with a hardness of 45°-60°A and a thickness of 2mm-3mm.

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