Stainless steel silencing check valve

Abstract

The utility model relates to the technical field of check valves, and discloses a stainless steel noise reduction check valve which structurally comprises a valve body, a water inlet connector, a water outlet connector, a valve clack and a rotary drum. When the rotating shaft is in contact with the contact block, the rotating shaft and the valve cover are buffered, the rotating reset speed of the rotating shaft is reduced, then the rotating shaft continues to rotate and makes contact with a plurality of speed reduction protrusions on the inner wall, and the speed reduction effect on rotation of the rotating shaft is achieved; noise generated after the valve clack collides with the valve body is reduced, and the service life of the check valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a stainless steel sound-absorbing check valve. Background Technique

[0002] A check valve refers to a valve whose closing member is a circular valve flap and which uses its own weight and the pressure of the medium to generate an action to block the reverse flow of the medium. It belongs to the category of automatic valves and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. Its function is to prevent reverse flow and only allow the fluid to flow in one direction. Usually, this kind of valve works automatically. Under the action of the fluid pressure flowing in one direction, the valve flap opens; when the fluid flows in the reverse direction, the valve flap acts on the valve seat by the fluid pressure and the self-weight of the valve flap, thereby cutting off the flow.

[0003] Based on the above, the valve flap of the existing widely used check valve usually makes an accelerated movement to close the valve under the action of its own gravity and the fluid force during the water flow reflux, which will cause a large impact force between the valve flap of the check valve and the valve body sealing surface, thereby generating noise. Content of the Utility Model

[0004] 1. Technical problems to be solved by the utility model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a stainless steel sound-absorbing check valve, which has the function of being able to absorb the sound when the valve flap of the check valve is closed.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A stainless steel sound-absorbing check valve, its structure includes a valve body, a water inlet interface, a water outlet interface, a valve flap and a rotating cylinder. The two ends of the valve body are respectively provided with a water inlet interface and a water outlet interface, and the valve flap is rotationally matched with the valve body through the rotating cylinder inside the valve body.

[0009] As an optimization, the valve flap includes a rotating shaft, a valve cover, a sealing ring, sound-absorbing cotton, holes and bumps. Two bumps are installed on the rotating shaft, the valve cover is connected to the rotating shaft, one side of the valve cover is movably clamped with a sealing ring fixed to the valve body, the sound-absorbing cotton is installed on the outside of the sealing ring, and the holes are densely arranged in a ring on the sound-absorbing cotton.

[0010] As an optimization, the sealing ring is in contact with the valve cover.

[0011] As an optimization, the rotating cylinder includes deceleration protrusions, contact blocks and a reset plate. A number of deceleration protrusions are annularly arranged on the inner side wall of the rotating cylinder, the contact blocks are slidably matched inside the rotating cylinder, and one side of the contact blocks is matched with a reset plate, and the reset plate is installed on the rotating cylinder.

[0012] As an optimization, one side of the contact block is provided with an arc-shaped convex plate.

[0013] As an optimization, the top of the reset plate is connected with an arc-shaped plate. A number of springs are arrayed on one side of the arc-shaped plate, and the other ends of the number of springs are all connected with the rotating cylinder. The arc-shaped convex part of the arc-shaped plate is in contact with the arc-shaped convex plate of the contact block.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present utility model are as follows:

[0016] (1) For a stainless steel sound-absorbing check valve of the present utility model, the valve cover rotates downward under its own gravity, contacts the contact block and pushes it into the interior of the rotating cylinder, and squeezes the arc-shaped plate and the springs. When the rotating shaft contacts the contact block, it will buffer the rotating shaft and the valve cover, reduce the rotational reset speed of the rotating shaft, and then the rotating shaft continues to rotate and contacts a number of deceleration protrusions on the inner wall, which plays a role in decelerating the rotation of the rotating shaft, reduces the generation of noise after the valve flap impacts the valve body, and increases the service life of the check valve.

[0017] (2) For a stainless steel sound-absorbing check valve of the present utility model, the valve cover can be sealed with the valve body by contacting the sealing ring, and the sealing ring is wrapped by means of sound-absorbing cotton. The sound is continuously transmitted and consumed through the holes on the sound-absorbing cotton, which can eliminate the collision sound when the valve cover and the sealing ring are closed, and increase the sound-absorbing effect of the check valve. Description of the drawings

[0018] Figure 1 is a schematic structural diagram of a stainless steel sound-absorbing check valve of the present utility model;

[0019] Figure 2 is an analysis schematic diagram of the check valve of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the valve flap of the present utility model;

[0021] Figure 4 is an analysis schematic diagram of the rotating cylinder of the present utility model;

[0022] Figure 5 is a schematic structural diagram of the contact block and the reset block of the present utility model;

[0023] Figure 6 is a schematic diagram of the valve flap in rotation of the present utility model.

[0024] Reference numerals in the drawings: valve body - 1, water inlet interface - 2, water outlet interface - 3, valve flap - 4, rotating cylinder - 5, rotating shaft - 41, valve cover - 42, sealing ring - 43, sound - absorbing cotton - 44, holes - 45, convex block - 46, deceleration convex - 11, contact block - 12, reset plate - 13, arc convex plate - 121, arc plate - 131, spring - 132. Detailed implementation mode

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment:

[0027] Please refer to Figures 1 - 6 , a stainless - steel sound - absorbing check valve, the structure of which includes a valve body 1, a water inlet interface 2, a water outlet interface 3, a valve flap 4 and a rotating cylinder 5. The water inlet interface 2 and the water outlet interface 3 are respectively arranged at both ends of the valve body 1, and the valve flap 4 is rotationally fitted inside the valve body 1 through the rotating cylinder 5.

[0028] In this embodiment, the valve flap 4 includes a rotating shaft 41, a valve cover 42, a sealing ring 43, sound - absorbing cotton 44, holes 45 and a convex block 46. The rotating shaft 41 is rotationally fitted with the valve body 1. Two convex blocks 46 are installed on the rotating shaft 41. A valve cover 42 capable of blocking the water flow is connected to the rotating shaft 41. A sealing ring 43 fixed to the valve body 1 is movably engaged on one side of the valve cover 42. Sound - absorbing cotton 44 is installed on the outer side of the sealing ring 43, and holes 45 are densely arranged in a circular pattern on the sound - absorbing cotton 44.

[0029] In this embodiment, by the contact between the sealing ring 43 and the valve cover 42, the valve cover 42 can seal the valve body 1 when closed, and by wrapping the sealing ring 43 with the sound - absorbing cotton 44, and continuously transmitting and consuming sound through the holes 45 on the sound - absorbing cotton 44, the collision sound when the valve cover 42 and the sealing ring 43 are closed can be silenced.

[0030] In this embodiment, the rotating cylinder 5 includes deceleration convexes 11, contact blocks 12 and a reset plate 13. A number of deceleration convexes 11 are annularly arrayed on the inner side wall of the rotating cylinder 5. The number of deceleration convexes 11 can contact the convex block 46 when the rotating shaft 41 rotates to play a role in decelerating the rotating shaft 41. A contact block 12 is slidably fitted inside the rotating cylinder 5. One side of the contact block 12 is fitted with a reset plate 13, and the reset plate 13 is installed on the rotating cylinder 5.

[0031] In this embodiment, an arc convex plate 121 is provided on one side of the contact block 12.

[0032] In this embodiment, an arc-shaped plate 131 is connected to the top of the reset plate 13. A number of springs 132 are arrayed on the side of the arc-shaped plate 131 away from the contact block 12. The other ends of the number of springs 132 are all connected to the rotating cylinder 5. The arc-shaped convex part of the arc-shaped plate 131 is in contact with the arc-shaped convex plate 121 of the contact block 12.

[0033] Working principle: When the check valve is in use, water flow is discharged through the water inlet interface 2 and then discharged through the water outlet interface 3. At this time, the impact force of the water flow will push open the valve cover 42, and it will rotate in the rotating cylinder 5 through the rotating shaft 41. As the rotating shaft 41 rotates, it will contact the contact block 12 with the convex block 46 provided thereon and rotate to the lower part of the contact block 12;

[0034] Then when the water flow stops, the valve cover 42 will rotate downward and reset under the action of its own gravity. At this time, as the rotating shaft 41 resets and rotates, it will contact the contact block 12, and push the contact block 12 into the interior of the rotating cylinder 5 and squeeze the arc-shaped plate 131 and the springs 132 through the arc-shaped convex plate 121. When the contact between the rotating shaft 41 and the contact block 12 disappears after continuing to rotate, the springs 132 will drive the reset plate 13 to rebound and reset, and push out the contact block 12 through the reset plate 13 to reset together. When contacting the contact block 12, it will reduce the rotational reset speed of the rotating shaft 41. Then after buffering when contacting the contact block 12, the rotating shaft 41 will continue to rotate and contact a number of deceleration protrusions 11 on the inner wall of the rotating cylinder 5, which plays a role in decelerating the rotation of the rotating shaft 41. Then the rotating shaft will drive the valve cover 42 to contact the sealing ring 43 to close the check valve.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stainless steel silencing check valve, the structure of which comprises a valve body (1), a water inlet interface (2) and a water outlet interface (3) provided at both ends of the valve body (1), and a valve flap (4) rotatably fitted inside the valve body (1) through a rotating cylinder (5); It is characterized in that: The valve flap (4) comprises a rotating shaft (41), two convex blocks (46) mounted on the rotating shaft (41), a valve cover (42) located on the rotating shaft (41), a sealing ring (43) for movably engaging with one side of the valve cover (42), a sound-absorbing cotton (44) provided on the outer side of the sealing ring (43), and holes (45) densely distributed on the sound-absorbing cotton (44); The rotating cylinder (5) comprises a number of deceleration protrusions (11) provided on the inner side wall of the rotating cylinder (5), a contact block (12) located inside the rotating cylinder (5), and a reset plate (13) provided on one side of the contact block (12).

2. The stainless steel silencing check valve according to claim 1, characterized in that: The sealing ring (43) is in contact with the valve cover (42).

3. A stainless steel silencing check valve according to claim 1, characterized in that: An arc-shaped convex plate (121) is provided on one side of the contact block (12).

4. A stainless steel silencing check valve according to claim 1, characterized in that: An arc-shaped plate (131) is connected to the top of the reset plate (13). A number of springs (132) are arrayed on one side of the arc-shaped plate (131). The other ends of the springs (132) are all connected to the rotating cylinder (5). The arc-shaped convex part of the arc-shaped plate (131) is in contact with the arc-shaped convex plate (121) of the contact block (12).

5. A stainless steel silencing check valve according to claim 1, characterized in that: The sealing ring (43) is located on the valve body (1).

6. A stainless steel silencing check valve according to claim 1, characterized in that: The reset plate (13) is mounted on the rotating cylinder (5).

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