Swing check valve with water flow buffering and noise reduction functions

Abstract

The utility model belongs to the technical field of swing check valves, and particularly relates to a swing check valve capable of buffering water flow and reducing noise, which comprises a valve body, a valve cover is arranged at the top of the valve body, four screws are in threaded connection with the top of the valve cover, the valve cover is fixedly connected to the top of the valve body through the four screws, a barrel is fixedly connected to the valve cover, and a valve rod is arranged on the barrel. A lifting plate is arranged in the cylinder in a sliding mode, and a deflection angle adjusting mechanism is arranged between the lifting plate and the cylinder. The swing check valve is reasonable in structural design, the deflection angle of the valve clack is conveniently adjusted by adjusting the height of the buffer ball, the practicability of the device is improved, the valve clack can be buffered and protected by arranging the buffer ball and the buffer spring, damage caused by collision between the valve clack and the valve body is avoided, the service life of the swing check valve is prolonged, and the service life of the swing check valve is prolonged. And through the sound insulation layer and the sound absorption layer, the valve body has the sound insulation, sound absorption and noise reduction effects, and noise pollution is avoided.

Description

Technical Field

[0001] This utility model relates to the field of swing check valve technology, and in particular to a swing check valve for water flow buffering and noise reduction. Background Technology

[0002] A swing check valve, also known as a one-way valve or non-return valve, is used to prevent backflow of media in a pipeline. It is a valve that opens or closes automatically based on the flow and force of the media to prevent backflow. A swing check valve includes a valve body and a valve disc rotatably mounted within the valve body via a horizontal pin. The valve disc is connected to the horizontal pin via a rocker arm. When fluid flows from the inlet to the outlet of the swing check valve, if the pressure at the inlet is greater than the pressure at the outlet, the valve disc flips upwards around the horizontal pin to open the valve. When the pressure at the inlet is less than the pressure at the outlet, the valve disc flips downwards around the horizontal pin to close the valve.

[0003] A search revealed a novel swing check valve with Chinese patent number CN109723870B, comprising a valve body, valve seat, valve cover, valve disc, positioning frame, and rocker arm. The main feature is an installation platform mounted on the inner wall of the valve body directly above the valve seat. The upper surface of this installation platform is horizontal, and the inner edge of the platform is an eccentric arc. A circular notch is formed in the center of the platform, and screw holes and positioning holes are formed on the horizontal surfaces on both sides of the circular notch. The lower end face of the positioning frame has a plane that fits against the upper surface of the installation platform.

[0004] However, the swing check valves described above have some shortcomings in use. They are not convenient for buffering and protecting the valve disc. The valve disc will open when subjected to a large impact force from the fluid, allowing the fluid to flow in one direction. Due to the large impact force on the valve disc, it is easy for it to collide with the inner wall of the valve body, which can easily lead to damage to the valve disc over time. In addition, they do not have a noise reduction function, resulting in loud impact noise and fluid flow noise, which can easily cause noise pollution. Therefore, we propose a swing check valve with water flow buffering and noise reduction to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned shortcomings and propose a swing check valve for water flow buffering and noise reduction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A swing check valve for water flow buffering and noise reduction includes a valve body, a valve cover on top of the valve body, four screws threadedly connected to the top of the valve cover, the valve cover being fixedly connected to the top of the valve body by the four screws, a cylinder fixedly connected to the valve cover, a lifting plate slidably disposed inside the cylinder, a deflection angle adjustment mechanism disposed between the lifting plate and the cylinder, a buffer ball disposed below the lifting plate, a buffer protection mechanism disposed between the buffer ball, the lifting plate and the cylinder, a valve seat fixedly connected inside the valve body, a rocker arm rotatably connected to one inner wall of the valve body, a valve disc fixedly connected to one side of the rocker arm, a sealing gasket fixedly connected to one side of the valve disc, and the sealing gasket movably abutting against one side of the valve seat.

[0008] Preferably, the valve body and valve cover are made of the same material, both including a stainless steel layer, a noise reduction layer is fixedly connected to the top of the stainless steel layer, a galvanized layer is fixedly connected to the outside of the noise reduction layer, and an anti-corrosion layer is fixedly connected to the inside of the stainless steel layer.

[0009] Preferably, the noise reduction layer includes a sound-absorbing layer, and a sound-insulating layer is fixedly connected to the top of the sound-absorbing layer.

[0010] Preferably, the bottom of the sound-absorbing layer has multiple sound-absorbing holes, and sound-absorbing material is fixedly connected inside the sound-absorbing holes.

[0011] Preferably, the deflection angle adjustment mechanism includes a bearing fixedly connected to the top of the lifting plate, a hollow screw fixedly sleeved inside the inner ring of the bearing, and four rotating handles fixedly connected to the outer side of the hollow screw.

[0012] Preferably, limit grooves are provided on both inner walls of the cylinder, and limit blocks are slidably sleeved in the limit grooves. The two limit blocks are respectively fixedly connected to both sides of the lifting plate.

[0013] Preferably, the buffer protection mechanism includes a nut fixedly sleeved inside a hollow screw, a hollow rod fixedly connected to the bottom of the lifting plate, an adjusting screw threaded inside the nut, a knob fixedly connected to the top of the adjusting screw, a movable plate rotatably connected to the bottom of the adjusting screw, a buffer spring fixedly connected to the bottom of the movable plate, a lower plate fixedly connected to the bottom of the buffer spring, a connecting rod fixedly connected to the bottom of the lower plate, and a buffer ball fixedly connected to the bottom of the connecting rod.

[0014] Preferably, two guide rods are fixedly connected to the upper and lower inner walls of the hollow rod, and the lower plate and the movable plate are slidably sleeved on the outside of the two guide rods.

[0015] In this utility model, a swing check valve for water flow buffering and noise reduction is described. Depending on the valve disc deflection angle, rotating the hollow screw causes it to move a lifting plate, hollow rod, and buffer ball, which in turn are limited by the limiting groove and limiting block. This allows adjustment of the buffer ball's height, thereby controlling the valve disc deflection angle and improving the device's practicality. Under fluid impact, the valve disc deflects to the upper left. The buffer ball, made of corrosion-resistant rubber, effectively buffers the valve disc. Simultaneously, under impact, the buffer ball... The connecting rod and lower plate move backward and upward to compress the buffer spring, which further buffers the impact force, preventing excessive impact force from damaging the valve disc and valve body, and improving the service life of the swing check valve. When used for a long time, the elasticity of the buffer spring will decrease, which will lead to a weakening of the buffering effect. At this time, hold the rotating handle to keep the hollow screw stationary, and then rotate the knob and adjusting screw. The rotation of the adjusting screw drives the moving plate to move downward and press down on the buffer spring, making the buffer spring spacing smaller, so as to restore the elasticity of the buffer spring and thus ensure the buffering protection effect on the valve disc.

[0016] In this utility model, a swing check valve with water flow buffering and noise reduction improves the corrosion resistance of the valve body through an anti-corrosion layer, ensures the overall strength of the valve body through a stainless steel layer, and achieves sound insulation through a sound insulation layer, as well as sound absorption through a sound-absorbing layer, sound-absorbing holes and sound-absorbing materials, so that the valve body has the effect of sound absorption, sound insulation and noise reduction, thus avoiding noise pollution.

[0017] This utility model has a reasonable structural design. By adjusting the height of the buffer ball, the deflection angle of the valve disc can be adjusted, improving the practicality of the device. The buffer ball and buffer spring can buffer and protect the valve disc, preventing the valve disc from colliding with the valve body and causing damage, thus improving the service life of the swing check valve. Furthermore, through the sound insulation layer and sound absorption layer, the valve body has the effect of sound insulation, sound absorption and noise reduction, avoiding noise pollution. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a swing check valve for water flow buffering and noise reduction proposed in this utility model.

[0019] Figure 2 This is a cross-sectional view of a swing check valve for water flow buffering and noise reduction proposed in this utility model.

[0020] Figure 3 This is a cross-sectional view of the cylinder of a swing check valve for water flow buffering and noise reduction proposed in this utility model.

[0021] Figure 4 for Figure 3 A schematic diagram of the structure of part A;

[0022] Figure 5 This is a schematic diagram of the valve body of a swing check valve for water flow buffering and noise reduction proposed in this utility model.

[0023] Figure 6 This is a schematic diagram of the noise reduction layer of a swing check valve for water flow buffering and noise reduction proposed in this utility model.

[0024] In the diagram: 1. Valve body; 2. Valve cover; 3. Screw; 4. Cylinder; 5. Deflection angle adjustment mechanism; 6. Buffer protection mechanism; 7. Rocker arm; 8. Valve disc; 9. Sealing gasket; 10. Valve seat; 11. Stainless steel layer; 12. Noise reduction layer; 121. Sound insulation layer; 122. Sound absorption layer; 123. Sound absorption hole; 124. Sound absorption material; 13. Galvanized layer; 14. Anti-corrosion layer; 51. Limiting groove; 52. Bearing; 53. Lifting plate; 54. Hollow screw; 55. Rotary handle; 56. Limiting block; 60. Connecting rod; 61. Nut; 62. Adjusting screw; 63. Knob; 64. Hollow rod; 65. Buffer ball; 66. Moving plate; 67. Guide rod; 68. Buffer spring; 69. Lower plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-6 A swing check valve for water flow buffering and noise reduction includes a valve body 1, a valve cover 2 placed on top of the valve body 1, four screws 3 threadedly connected to the top of the valve cover 2, the valve cover 2 being fixedly connected to the top of the valve body 1 by the four screws 3, a cylinder 4 fixedly connected to the valve cover 2, a lifting plate 53 slidably disposed inside the cylinder 4, a deflection angle adjustment mechanism 5 disposed between the lifting plate 53 and the cylinder 4, a buffer ball 65 disposed below the lifting plate 53, a buffer protection mechanism 6 disposed between the buffer ball 65, the lifting plate 53 and the cylinder 4, a valve seat 10 fixedly connected inside the valve body 1, a rocker arm 7 rotatably connected to one side of the inner wall of the valve body 1, a valve disc 8 fixedly connected to one side of the rocker arm 7, a sealing gasket 9 fixedly connected to one side of the valve disc 8, and the sealing gasket 9 movably abutting against one side of the valve seat 10.

[0027] Specifically, refer to Figure 5 and Figure 6As shown, the valve body 1 and the valve cover 2 are made of the same material, both including a stainless steel layer 11. A noise reduction layer 12 is fixedly connected to the top of the stainless steel layer 11. A galvanized layer 13 is fixedly connected to the outer side of the noise reduction layer 12. An anti-corrosion layer 14 is fixedly connected to the inner side of the stainless steel layer 11. The noise reduction layer 12 includes a sound-absorbing layer 122. A sound insulation layer 121 is fixedly connected to the top of the sound-absorbing layer 122. Multiple sound-absorbing holes 123 are opened at the bottom of the sound-absorbing layer 122. Sound-absorbing material 124 is fixedly connected inside the sound-absorbing holes 123.

[0028] The above solution is adopted to improve the corrosion resistance of valve body 1 through anti-corrosion layer 14, ensure the overall strength of valve body 1 through stainless steel layer 11, and achieve sound insulation through sound insulation layer 121, and the combined sound absorption of sound absorption layer 122, sound absorption hole 123 and sound absorption material 124, so that valve body 1 has the effect of sound absorption, sound insulation and noise reduction, and avoids noise pollution.

[0029] Specifically, refer to Figure 1-4 As shown, the deflection angle adjustment mechanism 5 includes a bearing 52 fixedly connected to the top of the lifting plate 53. A hollow screw 54 is fixedly sleeved inside the inner ring of the bearing 52. Four rotating handles 55 are fixedly connected to the outer side of the hollow screw 54. Limiting grooves 51 are opened on both sides of the inner wall of the cylinder 4. Limiting blocks 56 are slidably sleeved in the limiting grooves 51. Two limiting blocks 56 are fixedly connected to both sides of the lifting plate 53 respectively.

[0030] The above scheme is adopted: depending on the different deflection angles of the valve disc 8, the hollow screw 54 is rotated by rotating the handle 55. Under the limitation of the limiting groove 51 and the limiting block 56, the hollow screw 54 drives the lifting plate 53, the hollow rod 64 and the buffer ball 65 to rise and fall, thereby adjusting the height of the buffer ball 65, and thus realizing the control of the deflection angle of the valve disc 8, improving the practicality of the device.

[0031] Specifically, refer to Figure 1-4 As shown, the buffer protection mechanism 6 includes a nut 61 fixedly sleeved inside a hollow screw 54, a hollow rod 64 fixedly connected to the bottom of a lifting plate 53, an adjusting screw 62 threaded inside the nut 61, a knob 63 fixedly connected to the top of the adjusting screw 62, a movable plate 66 rotatably connected to the bottom of the adjusting screw 62, a buffer spring 68 fixedly connected to the bottom of the movable plate 66, a lower plate 69 fixedly connected to the bottom of the buffer spring 68, a connecting rod 60 fixedly connected to the bottom of the lower plate 69, and a buffer ball 65 fixedly connected to the bottom of the connecting rod 60.

[0032] The above solution is adopted as follows: Under the impact of fluid, valve disc 8 deflects to the upper left. The buffer ball 65 can be made of anti-corrosion rubber. The rubber buffer ball 65 can effectively buffer valve disc 8. At the same time, under the impact, the buffer ball 65, connecting rod 60 and lower plate 69 move backward and upward and squeeze the buffer spring 68, which can further buffer the impact force and prevent the impact force from being too large and damaging valve disc 8 and valve body 1, thus improving the service life of swing check valve. When used for a long time, the elasticity of buffer spring 68 will decrease, which will lead to a weakening of the buffering effect. At this time, hold the rotating handle 55 to keep the hollow screw 54 stationary, and then rotate the knob 63 and adjusting screw 62. The rotation of adjusting screw 62 drives the moving plate 66 to move downward and press down the buffer spring 68, so that the spacing of buffer spring 68 becomes smaller, so as to restore the elasticity of buffer spring 68, thereby ensuring the buffering protection effect of valve disc 8.

[0033] Specifically, two guide rods 67 are fixedly connected to the upper and lower inner walls of the hollow rod 64. The lower plate 69 and the moving plate 66 are slidably sleeved on the outside of the two guide rods 67, which facilitates the guidance of the moving plate 66 and the lower plate 69, making their movement more stable and smooth.

[0034] In this invention, during use, depending on the deflection angle of the valve disc 8, the hollow screw 54 is rotated by rotating the handle 55. Under the limitation of the limiting groove 51 and the limiting block 56, the hollow screw 54 drives the lifting plate 53, the hollow rod 64, and the buffer ball 65 to rise and fall, thereby adjusting the height of the buffer ball 65. This allows for the control of the deflection angle of the valve disc 8, improving the practicality of the device. Under the impact of fluid, the valve disc 8 deflects to the upper left. The buffer ball 65, made of corrosion-resistant rubber, effectively buffers the valve disc 8. Simultaneously, under impact, the buffer ball 65, the connecting rod 60, and the lower... Plate 69 moves backward and upward, compressing the buffer spring 68, which further buffers the impact force, preventing excessive impact force from damaging the valve disc 8 and valve body 1, and improving the service life of the swing check valve. When used for a long time, the elasticity of the buffer spring 68 will decrease, which will lead to a weakening of the buffering effect. At this time, hold the rotating handle 55 to keep the hollow screw 54 stationary, and then rotate the knob 63 and the adjusting screw 62. The rotation of the adjusting screw 62 drives the moving plate 66 to move downward, pressing down on the buffer spring 68, making the gap between the buffer springs 68 smaller, so as to restore the elasticity of the buffer spring 68, thereby ensuring the buffering protection effect on the valve disc 8.

[0035] The anti-corrosion layer 14 improves the corrosion resistance of the valve body 1, the stainless steel layer 11 ensures the overall strength of the valve body 1, and the sound insulation layer 121, along with the combined sound absorption of the sound-absorbing layer 122, the sound-absorbing holes 123, and the sound-absorbing material 124, enable the valve body 1 to have the effect of sound absorption, sound insulation, and noise reduction, thus avoiding noise pollution.

Claims

1. A swing check valve for buffering and reducing noise of water flow, characterized in that, The utility model provides a valve, including valve body (1), the top of valve body (1) places bonnet (2), the top of bonnet (2) is connected with four screws (3), bonnet (2) is fixedly connected through four screws (3) at the top of valve body (1), bonnet (2) is fixedly connected with cylinder (4), the inside sliding of cylinder (4) is provided with lifting plate (53), be provided with deflection angle adjusting mechanism (5) between lifting plate (53) with cylinder (4), the below of lifting plate (53) is provided with buffer ball (65), be provided with buffer protection mechanism (6) between buffer ball (65), lifting plate (53) with cylinder (4), the inside fixedly connected with valve seat (10) of valve body (1), the inside wall of one side of valve body (1) is rotatably connected with rocker arm (7), one side of rocker arm (7) is fixedly connected with valve flap (8), one side of valve flap (8) is fixedly connected with sealing pad (9), sealing pad (9) swingly abuts at one side of valve seat (10).

2. The swing check valve of claim 1, wherein, The valve body (1) and the bonnet (2) are made of the same material, both including a stainless steel layer (11), the top of the stainless steel layer (11) is fixedly connected with a noise reduction layer (12), the outer side of the noise reduction layer (12) is fixedly connected with a galvanized layer (13), the inner side of the stainless steel layer (11) is fixedly connected with a corrosion-resistant layer (14).

3. The swing-type check valve of claim 2, wherein, The noise reduction layer (12) includes a sound-absorbing layer (122), and the top of the sound-absorbing layer (122) is fixedly connected with a sound-insulating layer (121).

4. The swing-type check valve of claim 3, wherein, A plurality of sound-absorbing holes (123) are formed in the bottom of the sound-absorbing layer (122), and sound-absorbing material (124) is fixedly connected in the sound-absorbing holes (123).

5. The swing-type check valve of claim 1, wherein, The deflection angle adjusting mechanism (5) includes a bearing (52) fixedly connected to the top of the lifting plate (53), a hollow screw rod (54) fixedly sleeved in the inner ring of the bearing (52), and four rotating handles (55) fixedly connected to the outer side of the hollow screw rod (54).

6. The swing check valve of claim 1, wherein, Limiting grooves (51) are formed in the inner walls of the two sides of the cylinder (4), and limiting blocks (56) are slidingly sleeved in the limiting grooves (51), and the two limiting blocks (56) are fixedly connected to the two sides of the lifting plate (53), respectively.

7. The swing-type check valve of claim 5, wherein the valve body is formed of a material having a hardness of 60 or more. The buffer protection mechanism (6) includes a nut (61) fixedly sleeved in the hollow screw rod (54), a hollow rod (64) fixedly connected to the bottom of the lifting plate (53), an adjusting screw rod (62) threadedly sleeved in the nut (61), a knob (63) fixedly connected to the top end of the adjusting screw rod (62), a moving plate (66) rotatably connected to the bottom end of the adjusting screw rod (62), a buffer spring (68) fixedly connected to the bottom of the moving plate (66), a lower plate (69) fixedly connected to the bottom end of the buffer spring (68), a connecting rod (60) fixedly connected to the bottom of the lower plate (69), and the buffer ball (65) is fixedly connected to the bottom end of the connecting rod (60).

8. The swing-type check valve of claim 7, wherein, Two guide rods (67) are fixedly connected to the upper and lower inner walls of the hollow rod (64), and the lower plate (69) and the moving plate (66) are slidingly sleeved on the outer sides of the two guide rods (67).

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