Anti-stuck wafer check valve

Abstract

The utility model relates to the technical field of valve equipment, specifically an anti-stuck clamp-type check valve, comprising a valve core flap, a valve cover, a spring, a valve seat and a valve body, the valve seat being arranged inside the valve body, and characterized in that: a valve core flap is arranged in the middle of the valve seat, a spring is connected between the top of the valve core flap and the bottom of the valve seat, a valve cover is installed on the top of the valve seat, and the valve cover presses the valve core flap and the spring onto the valve seat; the valve core flap comprises a valve core flap cover and a valve core flap rod, the valve core flap cover and the valve core flap rod form a T-shaped structure, the valve core flap cover and the valve cover are cooperatively connected, the valve core flap rod is a longitudinally arranged rod-shaped, the valve core flap rod is slidably connected to the middle of the valve seat, and the valve core flap rod is provided with a strip groove extending along the longitudinal direction; compared with the prior art, the utility model can realize that during the entire operation of the check valve, the valve core flap and the valve seat move smoothly, and the phenomenon of jamming and eccentricity will not occur, thereby ensuring the normal operation of the check valve and reducing safety hazards at the same time.

Description

[Technical field]

[0001] The utility model relates to the technical field of water supply valve equipment, in particular to an anti-stuck clamp-type check valve. [Background Technology]

[0002] In the field of water supply, a check valve is generally installed at the outlet of a water pump to prevent water hammer from affecting the pump. During the operation of the water pump, the check valve is in an open state.

[0003] The valve core disc is a major component on the wafer-type check valve. It is a moving part that cooperates with the valve seat. When the gap is too large, it is easy to cause eccentricity, and the check valve will not open fully, affecting the flow rate. If the gap is too small, it is easy to cause sticking and failure to rebound, which will cause backflow. At the same time, when water hammer occurs, the check valve fails to protect the water pump and will cause damage to the equipment. [Contents of the utility model]

[0004] The purpose of the utility model is to solve the above-mentioned deficiencies and provide an anti-stuck wafer-type check valve, which can achieve smooth movement between the valve core flap and the valve seat during the entire operation of the check valve, and will not cause sticking and eccentricity, thereby ensuring the normal operation of the check valve and reducing safety hazards.

[0005] In order to achieve the above-mentioned purpose, an anti-stuck clamp-type check valve is designed, comprising a valve core flap 1, a valve cover 2, a spring 4, a valve seat 5 and a valve body 6, wherein the valve seat 5 is arranged inside the valve body 6, and is characterized in that: a valve core flap 1 is arranged in the middle of the valve seat 5, a spring 4 is connected between the top of the valve core flap 1 and the bottom of the valve seat 5, a valve cover 2 is installed on the top of the valve seat 5, and the valve cover 2 presses the valve core flap 1 and the spring 4 onto the valve seat 5; the valve core flap 1 comprises a valve core flap cover 1-1 and a valve core flap rod 1-2, the valve core flap cover 1-1 and the valve core flap rod 1-2 form a T-shaped structure, the valve core flap cover 1-1 is cooperatively connected with the valve cover 2, the valve core flap rod 1-2 is a longitudinally arranged rod-shaped, the valve core flap rod 1-2 is slidably connected to the middle of the valve seat 5, and the valve core flap rod 1-2 is provided with a strip groove 1-3 extending along the longitudinal direction.

[0006] Furthermore, the valve cover 2 is detachably sealed and connected to the valve seat 5 , and an annular sealing gasket is provided between the valve cover 2 and the valve seat 5 , and is sealed by the annular sealing gasket.

[0007] Furthermore, the top surface of the valve core flap cover 1-1 is set to be a spherical surface, and the spherical surface of the valve core flap cover 1-1 is cooperatively connected with the annular sealing gasket. Here, the sealing performance can be improved by making it into a spherical surface.

[0008] Furthermore, a protrusion 1-4 is provided at the bottom of the valve core flap cover 1-1, one end of the spring 4 is connected to the inner side of the protrusion 1-4, and the other end of the spring 4 is connected to the bottom of the valve seat 5. The spring 4 elastically supports the valve core flap 1 on the valve cover 2 and forms a seal.

[0009] Furthermore, a guide sleeve 7 is provided in the middle of the valve seat 5 and is connected to the valve core flap rod 1-2. The guide sleeve 7 is cylindrical and is connected to the four sides of the valve core flap rod 1-2. The four sides of the valve core flap rod 1-2 are hollowed out to form a strip groove 1-3 extending along the longitudinal direction.

[0010] Furthermore, an annular groove is circumferentially arranged on the outer wall of the valve cover 2, and an O-ring 3 is installed in the annular groove.

[0011] Compared with the prior art, the utility model has a novel structure and a reasonable design. By setting the valve core flap in the check valve to a structure composed of a valve core flap cover and a valve core flap rod, the valve core flap and the valve seat can move smoothly relative to each other during the entire operation of the check valve, and there will be no jamming or eccentricity, thereby ensuring the normal operation of the check valve. At the same time, the safety hazards are reduced, and the problems of low pass rate and jamming are solved. In addition, the valve core flap of the utility model adopts the form of four-side cooperation and four-side air avoidance, which not only ensures the cooperation, but also ensures the pass rate, and is worthy of popularization and application. [Drawings]

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the internal structure of the valve core flap of the utility model;

[0014] Figure 3 It is a schematic diagram of the external structure of the valve core flap of the utility model;

[0015] Figure 4 It is a three-dimensional structural schematic diagram of the valve core flap of the utility model;

[0016] Figure 5 This is a structural schematic diagram of the utility model when the valve core flap is fully closed;

[0017] Figure 6 This is a schematic diagram of the structure of the utility model when the valve core flap is fully opened;

[0018] Figure 7 This is a schematic diagram of the structure of the utility model when the check valve is fully closed;

[0019] Figure 8 This is a schematic diagram of the structure of the utility model when the check valve is fully opened;

[0020] In the figure: 1, valve core flap 2, valve cover 3, O-ring 4, spring 5, valve seat 6, valve body 7, guide sleeve 1-1, valve core flap cover 1-2, valve core flap rod 1-3, strip groove 1-4, protrusion. [Specific implementation method]

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] As attached Figure 1 As shown, the utility model provides an anti-stuck wafer-type check valve, comprising a valve core flap 1, a valve cover 2, a spring 4, a valve seat 5 and a valve body 6, wherein the valve seat 5 is arranged inside the valve body 6, and is characterized in that: a valve core flap 1 is arranged in the middle of the valve seat 5, a spring 4 is connected between the top of the valve core flap 1 and the bottom of the valve seat 5, a valve cover 2 is installed on the top of the valve seat 5, and the valve cover 2 presses the valve core flap 1 and the spring 4 onto the valve seat 5; a circle of annular grooves are arranged on the outer wall of the valve cover 2 along the circumferential direction, and an O-ring 3 is arranged in the annular groove.

[0023] As attached Figure 2 To Attachment Figure 4 As shown, the valve core flap 1 includes a valve core flap cover 1-1 and a valve core flap rod 1-2. The valve core flap cover 1-1 and the valve core flap rod 1-2 form a T-shaped structure. The valve core flap cover 1-1 is connected with the valve cover 2. The valve core flap rod 1-2 is a longitudinally arranged rod. The valve core flap rod 1-2 is slidably connected to the middle part of the valve seat 5. The valve core flap rod 1-2 is provided with a strip groove 1-3 extending along the longitudinal direction.

[0024] The valve cover 2 is detachably sealed and connected to the valve seat 5. An annular sealing gasket is arranged between the valve cover 2 and the valve seat 5, and the annular sealing gasket is used for sealing. The top surface of the valve core flap cover 1-1 is set as a spherical surface, and the spherical surface of the valve core flap cover 1-1 is matched and connected with the annular sealing gasket. Here, the sealing performance can be improved by making it into a spherical surface. A protrusion 1-4 is arranged at the bottom of the valve core flap cover 1-1, one end of the spring 4 is connected to the inner side of the protrusion 1-4, and the other end of the spring 4 is connected to the bottom of the valve seat 5. The spring 4 elastically supports the valve core flap 1 on the valve cover 2 and forms a seal. A guide sleeve 7 matched and connected with the valve core flap rod 1-2 is arranged in the middle of the valve seat 5. The guide sleeve 7 is cylindrical and matched and connected with the four sides of the valve core flap rod 1-2. The four sides of the valve core flap rod 1-2 are hollowed out to form a strip groove 1-3 extending along the longitudinal direction.

[0025] In the utility model, the valve core flap rod 1-2 adopts a structure combining four-side cooperation and four-side hollowing. When the wafer-type check valve needs to be opened, the liquid generates pressure on the valve core flap cover 1-1, and the four sides of the valve core flap rod 1-2 move along the valve seat 5. The four sides of the valve core flap rod 1-2 and the valve seat 5 are matched with cylindrical surfaces relative to each other; when there are impurities in the liquid, they can flow out along with the liquid through the four hollowings of the valve core flap rod 1-2, preventing the impurities from blocking the valve core flap rod. When the wafer-type check valve needs to be closed, the liquid generates reverse pressure on the valve core flap cover 1-1, and the four sides of the valve core flap rod 1-2 move in the opposite direction along the valve seat 5, pressing the valve core flap cover 1-1 and the valve cover 2 to prevent liquid backflow. During the operation of the rectification check valve, the valve core flap rod 1-2 and the valve seat 5 move relative to each other smoothly, solving the problems of low pass rate and blocking.

[0026] In addition, the valve core flap is a major part of the clamp-type check valve. At the same time, during operation, the moving parts cooperate with the valve seat. If the gap is too large, it is easy to cause eccentricity. If the gap is too small, it is easy to cause jamming and rebound failure, which will cause backflow. Therefore, the utility model adopts the form of four-side cooperation and four-side avoidance, which not only ensures cooperation, but also ensures the pass rate.

[0027] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0028] The present invention is not limited to the above-mentioned implementation modes, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be considered as equivalent replacement modes and shall be included in the protection scope of the present invention.

Claims

1. An anti-seizure wafer-type check valve, comprising a valve core flap (1), a valve cover (2), a spring (4), a valve seat (5) and a valve body (6), wherein the valve seat (5) is arranged inside the valve body (6), and is characterized in that: A valve core flap (1) is arranged in the middle of the valve seat (5), a spring (4) is connected between the top of the valve core flap (1) and the bottom of the valve seat (5), a valve cover (2) is installed on the top of the valve seat (5), and the valve cover (2) presses the valve core flap (1) and the spring (4) onto the valve seat (5); the valve core flap (1) comprises a valve core flap cover (1-1) and a valve core flap rod (1-2), the valve core flap cover (1-1) and the valve core flap rod (1-2) form a T-shaped structure, the valve core flap cover (1-1) and the valve cover (2) are connected in a cooperative manner, the valve core flap rod (1-2) is a longitudinally arranged rod, the valve core flap rod (1-2) is slidably connected to the middle of the valve seat (5), and the valve core flap rod (1-2) is provided with a strip groove (1-3) extending along the longitudinal direction.

2. The anti-seizure wafer check valve according to claim 1, characterized in that: The valve cover (2) is detachably sealed and connected to the valve seat (5); an annular sealing gasket is provided between the valve cover (2) and the valve seat (5), and the valve cover (2) and the valve seat (5) are sealed by the annular sealing gasket.

3. The anti-seizure wafer check valve according to claim 2, characterized in that: The top surface of the valve core flap cover (1-1) is arranged as a spherical surface, and the spherical surface of the valve core flap cover (1-1) is cooperatively connected with the annular sealing gasket.

4. The anti-seizure wafer-type check valve according to claim 1, characterized in that: A protrusion (1-4) is provided at the bottom of the valve core flap cover (1-1), one end of the spring (4) is connected to the inner side of the protrusion (1-4), and the other end of the spring (4) is connected to the bottom of the valve seat (5). The spring (4) elastically supports the valve core flap (1) on the valve cover (2) and forms a seal.

5. The anti-seizure wafer check valve according to any one of claims 1 to 4, characterized in that: A guide sleeve (7) is provided in the middle of the valve seat (5) and is connected to the valve core flap rod (1-2). The guide sleeve (7) is cylindrical and is connected to the four sides of the valve core flap rod (1-2). The four sides of the valve core flap rod (1-2) are hollowed out to form a strip groove (1-3) extending in the longitudinal direction.

6. The anti-seizure wafer check valve according to any one of claims 1 to 4, characterized in that: The outer wall of the valve cover (2) is provided with an annular groove along the circumferential direction, and an O-ring (3) is installed in the annular groove.

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