Clamp swing check valve rocker arm

Abstract

The utility model discloses a clamp swing check valve rocker arm which comprises a rocker arm body, an installation arm is arranged at the end of the rocker arm body, a connecting hole site is formed in the installation arm, a pin shaft is inserted in the connecting hole site in the installation arm in a penetrating mode, a clamp installation hole is formed in the pin shaft, and a valve clack is fixedly installed at the bottom of the pin shaft. A hoop is inserted into the hoop mounting hole to fix the rocker arm body and the pin shaft, an arc-shaped seat is fixedly mounted on the surface of the end of the mounting arm, and a driving seat is fixedly arranged on the left side of the mounting arm. According to the clamp swing check valve rocker arm, the arc-shaped base is arranged on the surface of the mounting arm, the arc-shaped base is integrally arranged in a streamline mode, when water flow impacts on the arc-shaped base, resistance and turbulent flow generated when the water flow passes through are reduced, and therefore impact force is reduced; water flow can flow through smoothly, local pressure mutation on the surface of the rocker arm body is reduced, and the situation that the shape of the rocker arm is changed, normal opening and closing of the valve clack are affected, and the non-return function fails is avoided.

Description

Technical Field

[0001] This utility model relates to the field of check valves, specifically a clamp-type swing check valve rocker arm. Background Technology

[0002] The working principle of the clamp swing check valve is as follows: When the fluid flows from the inlet end to the outlet end of the valve (i.e., forward flow), the pressure of the fluid acts on the valve disc; since the valve disc is connected to the valve body through a hinge mechanism, under the push of the fluid pressure, the valve disc rotates around the pin at a certain angle and leaves the valve seat; at this time, the valve is in the open state, and the fluid can pass through the valve smoothly.

[0003] Regarding patents for swing check valves, a search revealed CN118391473A: a compact swing check valve with an integrated housing. The paper states that for the valve seat 2, sealing element valve disc 3, rocker arm 5, and its connecting pin 4 and cotter pin 7 to enter the designated position from the medium flow channel inlet 11 or outlet 12 of the housing 1 in an assembled manner, the maximum diameter of the rocker arm 5 should be less than or equal to the maximum outer diameter 21 of the valve seat 2. During operation, the water flow impact force generated when the valve opens and closes rapidly causes the rocker arm shape to change over time, affecting the normal opening and closing of the valve disc and leading to the failure of the check valve function. Utility Model Content

[0004] The purpose of this utility model is to provide a clamp-type swing check valve rocker arm to solve the defects mentioned in the background art.

[0005] To achieve the above objectives, a clamp-type swing check valve rocker arm is provided, comprising a rocker arm body, an mounting arm at the end of the rocker arm body, and a connection hole on the mounting arm. A pin is inserted through the connection hole on the mounting arm, and a clamp mounting hole is provided on the pin. A valve disc is fixedly installed at the bottom of the pin. A clamp is inserted through the clamp mounting hole to fix the rocker arm body and the pin. An arc-shaped seat is fixedly installed on the end surface of the mounting arm, and a drive seat is fixedly provided on the left side of the mounting arm. The drive seat has a mounting hole inside, and the rotating shaft of the check valve is fixedly installed in the mounting hole.

[0006] Preferably, the cross-section of the arc-shaped seat is arc-shaped, and multiple sets of through holes are evenly opened on the arc-shaped seat, while the distance between two adjacent sets of through holes is consistent.

[0007] Preferably, the axial cross-section of the valve disc and the pin is a concentric circle structure, and the bottom of the valve disc is covered with a sealing gasket, which is an annular structure made of rubber.

[0008] Preferably, five sets of positioning blocks are uniformly fixed on the surface of the sealing gasket, and five sets of positioning holes are uniformly opened at the bottom of the valve disc, with the size of the positioning holes matching that of the positioning blocks.

[0009] Preferably, the five sets of positioning blocks are respectively inserted into the interior of the five sets of positioning holes, and the positioning blocks are provided with through holes. At the same time, the bottom of the positioning holes is provided with screw holes, and the fixing bolts pass through the through holes on the positioning blocks and are screwed into the screw holes at the bottom of the positioning holes.

[0010] Preferably, the valve disc and the sealing gasket are positioned and installed evenly by five sets of positioning blocks and positioning holes, and the positioning blocks and positioning holes are all arc-shaped.

[0011] Preferably, the axial cross-section of the valve disc and the sealing gasket is a concentric circle structure, and the valve disc is sealed and covered on the valve seat of the check valve by the sealing gasket.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model provides that when the valve disc is covered by the sealing gasket on the valve seat of the check valve, the check valve is in a locked state; the valve disc and the sealing gasket are positioned and installed evenly by five sets of positioning blocks and positioning holes, which facilitates the disassembly or replacement of the sealing gasket at the bottom of the valve disc.

[0014] 2. This utility model features an arc-shaped seat on the surface of the mounting arm. The arc-shaped seat is streamlined, which reduces resistance and turbulence when water flows onto it, thereby reducing the impact force. This allows the water to flow smoothly and reduces sudden pressure changes on the surface of the rocker arm. Furthermore, multiple sets of through holes are evenly spaced on the arc-shaped seat, allowing water to pass through and further reducing the impact force on the rocker arm. This prevents changes in the rocker arm shape that could affect the normal opening and closing of the valve disc, thus avoiding the failure of the check valve function. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A bottom view;

[0017] Figure 3 for Figure 1 Top view;

[0018] Figure 4 for Figure 1 A sectional view.

[0019] The following are the labels in the diagram: 1. Valve disc; 11. Positioning hole; 2. Sealing gasket; 3. Positioning block; 4. Through hole; 5. Pin; 6. Clamp mounting hole; 7. Rocker arm body; 71. Mounting arm; 72. Arc-shaped seat; 73. Through hole; 74. Drive seat; 75. Mounting hole. Detailed Implementation

[0020] Please see Figure 1-4 This utility model provides a rocker arm for a clamp-type swing check valve, including a rocker arm body 7. The end of the rocker arm body 7 is provided with a mounting arm 71, and the mounting arm 71 has a connection hole. A pin 5 is inserted through the connection hole on the mounting arm 71, and a clamp mounting hole 6 is provided on the pin 5. A valve disc 1 is fixedly installed at the bottom of the pin 5. A clamp is inserted through the clamp mounting hole 6 to fix the rocker arm body 7 and the pin 5. An arc-shaped seat 72 is fixedly installed on the end surface of the mounting arm 71, and a drive seat 74 is fixedly provided on the left side of the mounting arm 71. The drive seat 74 has a mounting hole 75 inside, and the rotating shaft of the check valve is fixedly installed in the mounting hole 75.

[0021] Working principle: During use, a clamp is inserted through the clamp mounting hole 6 to fix the rocker arm body 7 and the pin 5. The mounting hole 75 inside the drive seat 74 houses the check valve shaft. The shaft can drive the valve disc 1 to rotate via the drive seat 74 and the mounting arm 71. A sealing gasket 2 is fixedly installed on the surface of the valve disc 1. When the valve disc 1 covers the valve seat of the check valve through the sealing gasket 2, the check valve is in the locked state. When the valve disc 1 detaches from the valve seat of the check valve, the check valve is in the open state. The valve disc 1 and the sealing gasket 2 are positioned and installed evenly by five sets of positioning blocks 3 and positioning holes 11, facilitating positioning. The sealing gasket 2 is disassembled or replaced at the bottom of the valve disc 1. The surface of the mounting arm 71 is provided with an arc-shaped seat 72. The arc-shaped seat 72 is streamlined. When water flows onto the arc-shaped seat 72, it reduces the resistance and turbulence of the water flow, thereby reducing the impact force. This allows the water to flow smoothly and reduces local pressure changes on the surface of the rocker arm body 7. At the same time, multiple sets of through holes 73 are evenly opened on the arc-shaped seat 72. The water flows through the multiple sets of through holes 73, which further reduces the impact force of the water flow on the rocker arm body 7 and prevents the rocker arm shape from changing, affecting the normal opening and closing of the valve disc 1, and causing the check function to fail.

[0022] As a preferred embodiment, the arc-shaped seat 72 has an arc-shaped cross-section, and multiple sets of through holes 73 are evenly opened on the arc-shaped seat 72, while the distance between two adjacent sets of through holes 73 is consistent.

[0023] The axial cross-section of valve disc 1 and pin 5 is a concentric circle structure, and the bottom of valve disc 1 is covered with sealing gasket 2, which is a ring structure made of rubber.

[0024] In a preferred embodiment, five sets of positioning blocks 3 are uniformly fixed on the surface of the sealing gasket 2, and five sets of positioning holes 11 are uniformly opened at the bottom of the valve disc 1, while the size of the positioning holes 11 is adapted to the size of the positioning blocks 3.

[0025] Five sets of positioning blocks 3 are respectively inserted into the interior of five sets of positioning holes 11, and through holes 4 are provided on the positioning blocks 3. At the same time, screw holes are provided at the bottom of the positioning holes 11. Meanwhile, the fixing bolt passes through the through holes 4 on the positioning blocks 3 and is screwed and fixed inside the screw holes at the bottom of the positioning holes 11.

[0026] In a preferred embodiment, the valve disc 1 and the sealing gasket 2 are positioned and installed evenly by five sets of positioning blocks 3 and positioning holes 11, and the positioning blocks 3 and positioning holes 11 are all arc-shaped.

[0027] The axial cross-sections of valve disc 1 and sealing gasket 2 are concentric circles, and valve disc 1 is sealed and covered on the valve seat of check valve by sealing gasket 2.

Claims

1. A rocker arm for a clamp-type swing check valve, comprising a rocker arm body (7), characterized in that: The rocker arm body (7) is provided with a mounting arm (71) at its end, and a connection hole is provided on the mounting arm (71). A pin (5) is inserted through the connection hole on the mounting arm (71), and a clamp mounting hole (6) is provided on the pin (5). A valve disc (1) is fixedly installed at the bottom of the pin (5). A clamp is inserted through the clamp mounting hole (6) to fix the rocker arm body (7) and the pin (5). An arc-shaped seat (72) is fixedly installed on the end surface of the mounting arm (71), and a drive seat (74) is fixedly provided on the left side of the mounting arm (71). A mounting hole (75) is provided inside the drive seat (74), and the rotating shaft of the check valve is fixedly installed in the mounting hole (75).

2. The clamp-type swing check valve rocker arm according to claim 1, characterized in that: The arc-shaped seat (72) has an arc-shaped cross-section, and multiple sets of through holes (73) are evenly opened on the arc-shaped seat (72), while the distance between two adjacent sets of through holes (73) is consistent.

3. The rocker arm of a clamp-type swing check valve according to claim 1, characterized in that: The axial cross-section of the valve disc (1) and the pin (5) is a concentric circle structure, and the bottom of the valve disc (1) is covered with a sealing gasket (2), which is a ring structure made of rubber.

4. The rocker arm of a clamp-type swing check valve according to claim 3, characterized in that: Five sets of positioning blocks (3) are uniformly fixed on the surface of the sealing gasket (2), and five sets of positioning holes (11) are uniformly opened at the bottom of the valve disc (1). At the same time, the size of the positioning holes (11) is matched with that of the positioning blocks (3).

5. The clamp-on swing check valve rocker arm according to claim 4, characterized in that: Five sets of positioning blocks (3) are respectively inserted into the interior of five sets of positioning holes (11), and through holes (4) are opened on the positioning blocks (3). At the same time, screw holes are opened at the bottom of the positioning holes (11), and the fixing bolt passes through the through holes (4) on the positioning blocks (3) and is screwed and fixed inside the screw holes opened at the bottom of the positioning holes (11).

6. The rocker arm of a clamp-type swing check valve according to claim 1, characterized in that: The valve disc (1) and the sealing gasket (2) are positioned and installed evenly through five sets of positioning blocks (3) and positioning holes (11), and the positioning blocks (3) and positioning holes (11) are all arc-shaped.

7. The rocker arm of a clamp-type swing check valve according to claim 1, characterized in that: The axial cross-section of the valve disc (1) and the sealing gasket (2) is a concentric circle structure, and the valve disc (1) is sealed and covered on the valve seat of the check valve by the sealing gasket (2).

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