Lengthened wafer check valve

Abstract

The utility model relates to the technical field of check valves, in particular to a lengthened wafer check valve which comprises a valve body, an O-shaped ring, a valve cover, a spring, a valve element clack and a valve seat, the valve seat is installed on one side in the valve body, the other side of the valve body extends outwards to form a lengthened neck, the end of the valve seat is detachably connected with the valve cover in a sealed mode, the O-shaped ring is arranged on the valve cover, and the spring is arranged on the valve element clack. The valve seat is arranged on the valve cover and is in sealed connection with the valve body through an O-shaped ring, a valve core clack is arranged in the valve seat, a spring is arranged between the valve core clack and the valve seat, the valve core clack is elastically supported on the valve cover by the spring to form sealing, the valve core clack and the spring are pressed on the valve seat by the valve cover, and a valve seat limiting table is arranged on the valve seat and is used for preventing the valve core clack from moving to the bottom to be blocked; compared with the prior art, the check valve has the advantages that interference to valves connected behind can be avoided, normal work of the check valve and the valves can be guaranteed, a more reliable protection effect on a front-section pressure pump is achieved, and meanwhile the valve core clack valve rod can be prevented from being blocked.

Description

[Technical Field]

[0001] This utility model relates to the field of check valve technology, specifically an extended wafer check valve. [Background Technology]

[0002] Currently, check valves have a wide range of applications, suitable for various scenarios involving unidirectional liquid flow. Their primary function is to protect booster pumps, preventing sudden cessation of liquid delivery from causing backflow and resulting in significant water hammer damage. Wafer check valves connect between the pump and the valve. Existing wafer check valves have a short axial dimension. When the check valve is opened, the axial movement of the valve core causes interference between the valve stem and the valve disc at the rear, affecting the normal operation of both the check valve and the valve. [Utility Model Content]

[0003] The purpose of this utility model is to solve the above-mentioned shortcomings by providing an extended wafer check valve, which can avoid interference with the valves connected downstream, thereby ensuring that both the check valve and the valve can work normally, providing more reliable protection for the upstream pressure pump, and preventing the valve core and valve stem from jamming.

[0004] To achieve the above objectives, an extended wafer check valve is designed, comprising a valve body 1, an O-ring 2, a valve cover 3, a spring 4, a valve core 5, and a valve seat 6. The valve seat 6 is installed on one side of the valve body 1, and the other side of the valve body 1 extends outward to form an extended neck 13. The valve cover 3 is detachably and sealingly connected to the end of the valve seat 6. The valve cover 3 is provided with an O-ring 2 and is sealed to the valve body 1 through the O-ring 2. The valve core 5 is installed inside the valve seat 6, and a spring 4 is installed between the valve core 5 and the valve seat 6. The spring 4 elastically supports the valve core 5 on the valve cover 3 and forms a seal. The valve cover 3 presses the valve core 5 and the spring 4 onto the valve seat 6. The valve seat 6 is provided with a valve seat limiting platform to prevent the valve core 5 from moving to the bottom and getting stuck.

[0005] Furthermore, the valve seat 6 has several circular holes 62, the valve seat limiting platform of the valve seat 6 has a valve seat limiting surface 61, and the valve core flap 5 has a valve core flap limiting surface 51. The valve core flap limiting surface 51 cooperates with the valve seat limiting surface 61 to prevent the valve core flap 5 valve stem from jamming.

[0006] Furthermore, the valve body 1 is provided with a left sealing end face 11 and a right sealing end face 14 at its left and right ends, respectively. The left sealing end face 11 is bolted to the pump outlet flange, and the right sealing end face 14 is bolted to the valve inlet flange.

[0007] Furthermore, the left side of the valve body 1 is a valve seat mounting part, and the valve seat 6 is installed in the valve seat mounting part. The right side of the valve body 1 is an extended neck 13. The valve body 1 has a positioning step 12 in the middle, and the valve seat 6 is fixed in position by the positioning step 12.

[0008] Furthermore, the valve core flap 5 is made into a spherical surface in the direction of the incoming flow, and the spherical surface of the valve core flap 5 is sealed to the valve cover 3 through a gasket, thereby reducing the resistance to liquid flow and improving the sealing performance.

[0009] Furthermore, the valve cover 3 and the valve seat 6 are connected by a threaded connection or a snap-fit ​​connection, so that the entire check valve is formed as a whole and is not easily scattered during disassembly, assembly, maintenance and replacement.

[0010] Furthermore, the spring 4 causes the valve core disc 5 to reciprocate. The spring 4 is compressed when the water pump is pressurized, thereby opening the check valve. The spring 4 is extended when the water pump stops working, thereby closing the check valve. This effectively prevents water hammer from impacting the water pump and protects the water pump.

[0011] Compared with existing technologies, this invention features a valve core positioning step inside the valve body and an overall elongated valve body neck. This ensures that the entire reciprocating motion of the valve core and valve stem occurs within the check valve body, preventing interference with downstream valves and guaranteeing the normal operation of both the check valve and the downstream valve. It also provides more reliable protection for the upstream pressure pump. Furthermore, the valve core of this invention has a valve core limiting surface that, in conjunction with the valve seat limiting surface, prevents the valve core and valve stem from jamming. [Image Description]

[0012] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0014] Figure 3 This is a schematic diagram of the valve body of this utility model;

[0015] In the diagram: 1. Valve body; 2. O-ring; 3. Valve cover; 4. Spring; 5. Valve core flap; 51. Valve core flap limiting surface; 6. Valve seat; 61. Valve seat limiting surface; 62. Circular hole; 11. Left sealing end face; 12. Positioning step; 13. Extended neck; 14. Right sealing end face. [Detailed Implementation]

[0016] As attached Figure 1 To be continued Figure 3As shown, this utility model provides an extended type of clamp check valve, including a valve body 1, an O-ring 2, a valve cover 3, a spring 4, a valve core 5, and a valve seat 6. The valve seat 6 is installed on one side of the valve body 1, and the other side of the valve body 1 extends outward to form an extended neck 13. The valve cover 3 is detachably and sealingly connected to the end of the valve seat 6. The valve cover 3 is provided with an O-ring 2 and is sealed to the valve body 1 through the O-ring 2. The valve core 5 is installed inside the valve seat 6, and the spring 4 is installed between the valve core 5 and the valve seat 6. The spring 4 elastically supports the valve core 5 on the valve cover 3 and forms a seal. The valve cover 3 presses the valve core 5 and the spring 4 onto the valve seat 6. The valve seat 6 is provided with a valve seat limiting platform to prevent the valve core 5 from moving to the bottom and getting stuck. The spring 4 causes the valve core 5 to move back and forth. When the water pump is pressurized, the spring 4 is compressed, thereby opening the check valve. When the water pump stops working, the spring 4 is extended, thereby closing the check valve.

[0017] The valve body 1 has a left sealing end face 11 and a right sealing end face 14 at its left and right ends, respectively. The left sealing end face 11 is bolted to the pump outlet flange, and the right sealing end face 14 is bolted to the valve inlet flange. The left side of the valve body 1 is the valve seat mounting part, and the valve seat 6 is installed in the valve seat mounting part. The right side of the valve body 1 is the extended neck 13. The valve body 1 has a positioning step 12 in the middle, and the valve seat 6 is fixed in position by the positioning step 12.

[0018] The valve cover 3 and the valve seat 6 are connected by a threaded connection or a snap-fit ​​connection, so that the entire check valve is formed as a whole and is not easy to fall apart during disassembly, assembly, maintenance and replacement. The valve seat 6 has several round holes 62, and the valve seat limiting platform of the valve seat 6 has a valve seat limiting surface 61. The valve core disc 5 has a valve core disc limiting surface 51. The valve core disc limiting surface 51 and the valve seat limiting surface 61 cooperate to prevent the valve core disc 5 valve stem from jamming. The valve core disc 5 is made into a spherical surface in the flow direction. The spherical surface of the valve core disc 5 is sealed to the valve cover 3 through a gasket, thereby reducing the liquid flow resistance and improving the sealing performance.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0020] This utility model provides an extended wafer check valve, including a valve body 1, an O-ring 2, a valve cover 3, a spring 4, a valve core flap 5, and a valve seat 6. The valve body 1 is provided with a left sealing end face 11, a positioning step 12, an extended neck 13, and a right sealing end face 14. The left sealing end face 11 and the right sealing end face 14 are respectively tightened with the pump outlet flange and the valve inlet flange by bolts. The valve seat 6 is fixedly installed at the positioning step 12 provided on the valve body 1. The valve seat is provided with a valve seat limiting platform to prevent the valve core flap 5 from moving to the bottom and jamming the valve core and causing failure.

[0021] The valve core disc 5 is provided with a valve core disc limiting surface 51, and the valve seat 6 is provided with a valve seat limiting surface 61. The valve core disc limiting surface 51 and the valve seat limiting surface 61 cooperate to prevent the valve core disc and valve stem from jamming. Several round holes 62 are opened on the valve seat to ensure the normal flow of water. A spring 4 is installed between the valve core disc 5 and the valve seat 6 to ensure that the valve core disc can move back and forth. When the water pump is pressurized, the spring 4 compresses and the check valve opens. When the water pump stops working, the spring 4 extends and the check valve closes, which can effectively prevent water hammer from impacting the water pump and protect the water pump. An O-ring 2 is provided on the valve cover, and the O-ring 2 cooperates with the valve body 1 to seal.

[0022] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0023] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. An extended type wafer check valve, characterized in that: The valve includes a valve body (1), an O-ring (2), a valve cover (3), a spring (4), a valve core (5), and a valve seat (6). The valve seat (6) is installed on one side of the valve body (1), and the other side of the valve body (1) extends outward to form an extended neck (13). The valve cover (3) is detachably and sealed to the end of the valve seat (6). The valve cover (3) is provided with an O-ring (2) and is sealed to the valve body (1) through the O-ring (2). The valve core (5) is installed inside the valve seat (6). A spring (4) is installed between the valve core (5) and the valve seat (6). The spring (4) elastically supports the valve core (5) on the valve cover (3) and forms a seal. The valve cover (3) presses the valve core (5) and the spring (4) onto the valve seat (6). The valve seat (6) is provided with a valve seat limiting platform, which is used to prevent the valve core (5) from moving to the bottom and getting stuck.

2. The extended wafer check valve as described in claim 1, characterized in that: The valve seat (6) has several round holes (62), and the valve seat limiting platform of the valve seat (6) has a valve seat limiting surface (61). The valve core (5) has a valve core limiting surface (51). The valve core limiting surface (51) and the valve seat limiting surface (61) cooperate to prevent the valve core (5) valve stem from getting stuck.

3. The extended wafer check valve as described in claim 1, characterized in that: The valve body (1) is provided with a left sealing end face (11) and a right sealing end face (14) at its left and right ends, respectively. The left sealing end face (11) is tightened with the pump outlet flange by bolts, and the right sealing end face (14) is tightened with the valve inlet flange by bolts.

4. The extended wafer check valve as described in claim 3, characterized in that: The valve body (1) has a valve seat mounting part on the left side, and the valve seat (6) is installed in the valve seat mounting part. The valve body (1) has an extended neck (13) on the right side. The valve body (1) has a positioning step (12) in the middle, and the valve seat (6) is fixed in position by the positioning step (12).

5. The extended wafer check valve as described in claim 1, characterized in that: The valve core flap (5) is made into a spherical surface in the direction of the flow, and the spherical surface of the valve core flap (5) is sealed to the valve cover (3) through a gasket.

6. The extended wafer check valve as described in claim 1, characterized in that: The valve cover (3) and the valve seat (6) are connected by a threaded connection or by a snap-fit ​​connection.

7. The extended wafer check valve as described in claim 1, characterized in that: The spring (4) causes the valve core (5) to reciprocate. The spring (4) is compressed when the water pump is pressurized, thereby opening the check valve. The spring (4) is extended when the water pump stops working, thereby closing the check valve.

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