A noise reduction assembly for a water inlet valve

Abstract

The utility model discloses a kind of noise reduction assemblies for inlet valve, including water stop diaphragm, valve piece and rear end cover, water stop diaphragm is set on valve piece, valve piece is set in rear end cover floating;Water stop diaphragm includes diaphragm body, installation hole and diaphragm through-hole are set on diaphragm body, valve piece includes valve piece body, guide column and fixed column are set on valve piece body, fixed column sets through liquid passage, installation hole is assembled with guide column, diaphragm through-hole is assembled with fixed column;Annular protrusion is set on diaphragm body surface;Form cavity between rear end cover and valve piece, overflow port is set on rear end cover and is communicated with cavity.The utility model is set on water stop diaphragm by annular protrusion, in closing process, the opening between annular protrusion and valve body gradually reduces, until closure, in the process, flow rate is slowly reduced, to reduce pressure surge and reduce noise.Shock absorber is set in rear end cover, by setting air cavity, slow down the pressure of water, to realize noise reduction.

Description

Technical Field

[0001] This utility model relates to the field of sanitary ware, and in particular to a noise reduction component for a water inlet valve. Background Technology

[0002] Chinese Patent CN 103925409 B discloses a water tank inlet valve. The water entering the valve body is divided into two paths. One path passes through the valve plate's liquid passage groove and the gap between the valve plate and the valve body, entering the rear end cover and exiting through a residual hole in the rear end cover. When the liquid passage hole in the rear end cover is blocked, the pressure on both sides of the valve plate is the same. Because the force-bearing area of ​​the valve plate facing the water-stop diaphragm is smaller than that facing the rear end cover, the pressure on the valve plate facing the rear end cover is greater than the pressure on the valve plate facing the water-stop diaphragm. This causes the valve plate to slide towards the water-stop diaphragm, blocking the gap between the water-stop diaphragm and the valve body. Water cannot flow out from the opening at the lower end of the valve body, and the inlet valve is closed. It is evident that during the closing process, the pressure inside the cavity fluctuates, generating significant noise. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the main purpose of this utility model is to overcome the shortcomings of the prior art and disclose a noise reduction component for a water inlet valve, including a water-stop diaphragm, a valve plate and a rear end cover, wherein the water-stop diaphragm is disposed on the valve plate and the valve plate is floatingly disposed inside the rear end cover;

[0004] The water-stopping diaphragm includes a diaphragm body with mounting holes and a diaphragm through hole. The valve plate includes a valve plate body with a guide post and a fixing post. The fixing post has a through-flow groove. The mounting hole is assembled with the guide post, and the diaphragm through hole is assembled with the fixing post. An annular protrusion is provided on the surface of the diaphragm body. A cavity is formed between the rear end cap and the valve plate. An overflow port communicating with the cavity is provided on the rear end cap. The water-stopping diaphragm is sealed to the rear end cap.

[0005] Furthermore, the surface of the annular protrusion is arc-shaped.

[0006] Furthermore, the overflow outlet is located at the upper part of the rear end cover.

[0007] Furthermore, the rear end cover has an axially protruding mounting ring, and the diaphragm body has an axially protruding first sealing portion that cooperates with the mounting ring.

[0008] Furthermore, the first sealing part has a second sealing part that protrudes radially, and the second sealing part is located between the valve body and the rear end cover.

[0009] Furthermore, it also includes a shock absorber, which is installed inside the rear end cover; the shock absorber includes a shock absorber body, which is cylindrical, with a first cavity recessed at one end of the shock absorber body and a second cavity recessed on the side wall of the shock absorber body; after the shock absorber body and the rear end cover are assembled, the second cavity and the rear end cover form a sealed cavity.

[0010] Furthermore, the rear end cover is provided with an installation cavity that mates with the shock absorber, the inner wall of the installation cavity is provided with a positioning groove, and the side wall of the shock absorber body is radially protruding with a positioning strip that mates with the positioning groove.

[0011] Furthermore, a sealing ring is radially protruding around the opening of the second cavity.

[0012] Furthermore, the sidewall of the shock absorber body is provided with several supporting ribs at intervals around its circumference.

[0013] Furthermore, the body of the pressure shock absorber is made of silicone.

[0014] The beneficial effects achieved by this utility model are:

[0015] This invention utilizes annular protrusions on a water-stop diaphragm. During the closing process, the opening between the annular protrusions and the valve body gradually decreases until it closes completely. This process slowly reduces the flow rate, thereby lowering pressure surges and reducing noise. A shock absorber is installed inside the rear cover, and an air chamber is incorporated to reduce water pressure, further reducing noise. The overflow outlet is moved upwards to prevent the formation of unnecessary air bubbles within the cavity, thus reducing noise generation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a noise reduction component for a water inlet valve according to the present invention.

[0017] Figure 2 This is a cross-sectional view of a noise reduction component for a water inlet valve according to the present invention.

[0018] Figure 3 A schematic diagram of the three-dimensional structure of a water-stopping membrane;

[0019] Figure 4 , Figure 5 This is a schematic diagram of the three-dimensional structure of the valve plate;

[0020] Figure 6 , Figure 7 This is a schematic diagram of the three-dimensional structure of the shock absorber;

[0021] Figure 8 This is a side view of the shock absorber;

[0022] Figure 9 for Figure 8Sectional view of AA;

[0023] Figure 10 This is a three-dimensional structural diagram of the rear end cover;

[0024] Figure 11 Schematic diagram of the combination of shock absorber and rear end cover;

[0025] Figure 12 This is a schematic diagram of the noise reduction component for a water inlet valve and its interaction with the water inlet valve according to this utility model;

[0026] The attached figures are labeled as follows:

[0027] 1. Water-stop diaphragm, 2. Valve plate, 3. Rear end cover, 4. Shock absorber

[0028] 11. Diaphragm body; 12. Mounting hole; 13. Diaphragm through hole; 14. Annular protrusion; 15. First sealing part; 16. Second sealing part.

[0029] 21. Valve plate body; 22. Guide post; 23. Fixing post; 24. Fluid passage hole.

[0030] 31. Overflow port; 32. Mounting ring; 33. Mounting cavity; 34. Positioning groove.

[0031] 41. Shock absorber body; 42. First cavity; 43. Second cavity; 44. Sealing ring; 45. Positioning strip; 46. Supporting rib. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0033] A noise reduction component for an inlet valve, such as Figures 1-12As shown, the device includes a water-stop diaphragm 1, a valve plate 2, and a rear end cover 3. The water-stop diaphragm 1 is mounted on the valve plate 2, and the valve plate 2 is floatingly mounted inside the rear end cover 3. The water-stop diaphragm 1 includes a diaphragm body 11, with a mounting hole 12 and a diaphragm through hole 13. The valve plate 2 includes a valve plate body 21, with a guide post 22 and a fixing post 23. The fixing post 23 has a through-hole liquid passage 24. The mounting hole 12 is assembled with the guide post 22, and the diaphragm through hole 13 is assembled with the fixing post 23, so as to install the water-stop diaphragm 1 and the valve plate 2 together. The valve plate 2 is made of plastic, and the water-stop diaphragm 1 is made of silicone. The water-stop diaphragm 1 is used to seal the valve body, and the valve plate 2 supports the water-stop diaphragm 1. The surface of the diaphragm body 11 has an annular protrusion 14. A cavity is formed between the rear end cover 3 and the valve plate 2. The rear end cover 3 has an overflow port 31 communicating with the cavity, and the water-stop diaphragm 1 and the rear end cover 3 are sealed together. The rear cover controls the opening and closing of the valve body. Specifically, water flows from the inlet to the water-stop diaphragm 1. Most of the water passes between the valve body and the water-stop diaphragm 1 and is discharged from the outlet of the valve body. A small portion of water enters the cavity through the liquid passage 24 and is discharged from the overflow port 31. When the valve is closed, the overflow port 31 is closed, and the pressure in the cavity increases, pushing the valve plate 2 towards the valve body to disconnect the inlet and outlet of the valve body. When the valve is closed, the opening between the annular protrusion 14 and the valve body gradually decreases until it is closed. During this process, the flow rate is slowly reduced to reduce pressure surge and thus reduce noise. After closing, the annular protrusion 14 is tightly attached to the valve body, providing a reliable seal.

[0034] In the above embodiments, such as Figures 1-12 As shown, the surface of the annular protrusion 14 is arc-shaped.

[0035] In one embodiment, such as Figures 1-12 As shown, the overflow port 31 is located at the top of the rear end cover. This is to prevent unnecessary air bubbles from forming in the cavity, thereby reducing noise generation.

[0036] In one embodiment, such as Figures 1-12 As shown, the rear end cover 3 has an axially protruding mounting ring 32, and the diaphragm body 11 has an axially protruding first sealing part 15 that cooperates with the mounting ring.

[0037] In one embodiment, such as Figures 1-12 As shown, a second sealing part 16 protrudes radially from the first sealing part 15 and is located between the valve body and the rear end cover 3. The rear end cover 3 is fixed to the valve body, and the second sealing part 16 is pressed between the valve body and the rear end cover 3, thereby achieving a sealing function.

[0038] In one embodiment, such as Figures 1-12As shown, it also includes a shock absorber 4, which is installed inside the rear end cover 3. The shock absorber 4 includes a shock absorber body 41, which is cylindrical. One end of the shock absorber body 41 has a first cavity 42 recessed, and a second cavity 43 is recessed on the side wall of the shock absorber body 41. After the shock absorber body 41 is assembled with the rear end cover 3, the second cavity 43 and the rear end cover 3 form a sealed cavity. Therefore, during the closing process of the water inlet valve, the pressure impact is reduced by the second cavity 43, thereby reducing the noise during the closing process.

[0039] In one embodiment, such as Figures 1-12 As shown, the rear end cover 3 has a mounting cavity 33 that mates with the shock absorber 4. The inner wall of the mounting cavity 33 has a positioning groove 34. The side wall of the shock absorber body 41 has a radially protruding positioning strip 45 that mates with the positioning groove 34. The positioning strip 45 mates with the groove in the rear end cover 3 to fix the shock absorber body 41 and prevent it from shifting during use.

[0040] In one embodiment, such as Figures 1-12 As shown, a sealing ring 44 is radially protruding around the opening of the second cavity 43. When the shock absorber body 41 is assembled with the rear end cover 3, the sealing ring 44 is tightly attached to the inner wall of the rear end cover 3, thus sealing the second cavity 43.

[0041] In one embodiment, such as Figures 1-5 As shown, a number of support ribs 46 are arranged at intervals around the side wall of the shock absorber body 41. The support ribs significantly improve the bending and torsional resistance of the shock absorber body by increasing the moment of inertia of the cross section, thus preventing deformation.

[0042] In one embodiment, such as Figures 1-12 As shown, the pressure damper body 41 is made of silicone.

[0043] When using this utility model, such as Figures 1-12 As shown, a pressure damper is installed inside the rear cover 3, and a water-stop diaphragm 1 is installed on the valve plate 2. The valve plate 2 is floatingly connected to the rear cover 3, while the water-stop diaphragm 1 is sealed to the rear cover 3. The rear cover 3 is then connected to the valve body. During the closing process of the inlet valve, the water pressure acts on the partition between the first chamber 2 and the second chamber 3. The second chamber 3 contains a gas chamber, which reduces the water pressure, thereby reducing noise. Simultaneously, the opening between the annular protrusion 14 and the valve body gradually decreases until it closes. During this process, the flow rate is slowly reduced to decrease pressure surges and thus reduce noise. After closing, the annular protrusion 14 is tightly fitted to the valve body, providing a reliable seal.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Any modifications or equivalent substitutions to the present utility model without departing from the spirit and scope thereof shall be covered within the protection scope of the claims of the present utility model.

Claims

1. A noise reduction assembly for an inlet valve, comprising a water-stop diaphragm, a valve plate, and a rear end cap, wherein the water-stop diaphragm is disposed on the valve plate, and the valve plate is floatingly disposed within the rear end cap; characterized in that, The water-stopping diaphragm includes a diaphragm body with mounting holes and a diaphragm through hole. The valve plate includes a valve plate body with a guide post and a fixing post. The fixing post has a through-flow groove. The mounting hole is assembled with the guide post, and the diaphragm through hole is assembled with the fixing post. An annular protrusion is provided on the surface of the diaphragm body. A cavity is formed between the rear end cap and the valve plate. An overflow port communicating with the cavity is provided on the rear end cap. The water-stopping diaphragm is sealed to the rear end cap.

2. The noise reduction component for an inlet valve according to claim 1, characterized in that, The surface of the annular protrusion is arc-shaped.

3. A noise reduction component for an inlet valve according to claim 1, characterized in that, The overflow outlet is located at the top of the rear end cover.

4. A noise reduction component for an inlet valve according to claim 1, characterized in that, The rear end cover has an axially protruding mounting ring, and the diaphragm body has an axially protruding first sealing part that cooperates with the mounting ring.

5. A noise reduction component for an inlet valve according to claim 4, characterized in that, The first sealing part has a radially protruding second sealing part, which is located between the valve body and the rear end cover.

6. A noise reduction component for an inlet valve according to claim 1, characterized in that, It also includes a shock absorber, which is installed inside the rear end cover; the shock absorber includes a shock absorber body, which is cylindrical, with a first cavity recessed at one end of the shock absorber body and a second cavity recessed on the side wall of the shock absorber body; after the shock absorber body and the rear end cover are assembled, the second cavity and the rear end cover form a sealed cavity.

7. A noise reduction component for an inlet valve according to claim 6, characterized in that, The rear end cover is provided with an installation cavity that mates with the shock absorber. The inner wall of the installation cavity is provided with a positioning groove. The side wall of the shock absorber body is provided with a positioning strip that mates with the positioning groove.

8. A noise reduction component for an inlet valve according to claim 6, characterized in that, A sealing ring is radially protruding around the opening of the second cavity.

9. A noise reduction component for an inlet valve according to claim 6, characterized in that, The shock absorber body has several supporting ribs spaced around its circumference on its side wall.

10. A noise reduction component for an inlet valve according to claim 6, characterized in that, The pressure damper body is made of silicone.

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