Fluid check valve

Abstract

The utility model provides a fluid check valve, and belongs to the technical field of valves. The fluid check valve comprises a valve body, a reset piece and a sealing assembly. The first magnetic ring applies magnetic force to the second magnetic ring so as to push the second magnetic ring to reset; the plug is fixed in the valve body, the piston body is arranged at one end of the plug in a sliding mode, and an inner ring of the piston body is connected with the plug in a matched and sealed mode. The second magnetic ring is embedded in the outer surface of the piston body; an existing spring type valve body is improved, magnetic force is adopted for providing driving force, no matter what fluid is conveyed in the valve body, the valve body cannot make contact with the reset piece, therefore, the situation that the reset piece is damaged, and consequently movement of the movable plug assembly is affected is avoided, and the long service life of the valve body is achieved. And the piston body is sleeved on the outer surface of the plug, and the sealing ring is arranged on the connecting surface, so that the leakage problem is avoided.

Description

Technical Field

[0001] This application relates to the field of valves, and more specifically, to a fluid check valve. Background Technology

[0002] Currently, check valves, also known as non-return valves, one-way valves, or backflow valves, are valves that rely on the weight of their own opening and closing parts and the pressure of the medium to prevent backflow. Common swing and butterfly valves have a hinge structure;

[0003] The existing technical solutions mentioned above have the following drawbacks: the spring-type structure suffers from the susceptibility of the spring to corrosion and fatigue strength issues, which affect the lifespan of the spring-type valve body. Utility Model Content

[0004] To overcome the above shortcomings, this application provides a fluid check valve designed to improve the problem of short service life.

[0005] This application provides a fluid check valve, including a valve body, a reset element, and a sealing assembly;

[0006] The reset component includes a first magnetic ring and a second magnetic ring. The first magnetic ring applies a magnetic force to the second magnetic ring to push the second magnetic ring to reset.

[0007] The sealing assembly includes a piston body and a plug. The plug is fixed in the valve body, and the piston body is slidably disposed at one end of the plug. The inner ring of the piston body is sealed to the plug. The second magnetic ring is embedded in the outer surface of the piston body.

[0008] In a preferred embodiment of this utility model, the valve body side wall is provided with an insertion interface, the insertion interface is connected to the internal channel of the valve body, the upper port of the insertion interface is provided with a sealing cap, and a docking shell is provided inside the insertion interface, the upper end of the docking shell is fixedly connected to the sealing cap;

[0009] The side wall of the docking shell has a through groove, and the two ends of the through groove are engaged with the internal channel of the valve body. The piston body is slidably disposed in the through groove, and the plug is fixed at one end of the through groove.

[0010] In a preferred embodiment of this utility model, the upper end of the docking shell is provided with a receiving groove, the receiving groove covers the outer surface of the through groove, and the first magnetic ring is disposed in the receiving groove.

[0011] In a preferred embodiment of this utility model, the valve body surface is provided with a threaded hole, and the edge of the sealing cover is provided with countersunk holes at equal intervals. A fastening screw is provided in the countersunk hole, and the lower end of the fastening screw is threadedly connected to the threaded hole.

[0012] In a preferred embodiment of this utility model, a sealing gasket is provided at the mating point between the sealing cover and the insertion interface, and the sealing gasket is disposed at the lower end of the sealing cover.

[0013] In a preferred embodiment of this utility model, one end of the plug is chamfered, and a sealing ring that seals against the piston body is fitted on the outer surface of the plug.

[0014] In a preferred embodiment of this utility model, the first magnetic ring and the second magnetic ring are concentrically arranged, the second magnetic ring and the piston body are concentrically arranged, and the piston body and the plug are concentrically arranged.

[0015] In a preferred embodiment of this utility model, the first magnetic ring is a permanent magnet or a winding that generates a magnetic field when energized, and a snap-fit ​​groove is provided on the inner wall of the through groove, and a snap-fit ​​spring is snapped into the snap-fit ​​groove.

[0016] In a preferred embodiment of the present invention, the first magnetic ring is slidably sleeved on the outer surface of the through groove, a limiting groove is formed on the surface of the sealing cover, a push block is slidably engaged in the limiting groove, and the lower end of the push block is fixedly connected to the first magnetic ring.

[0017] In a preferred embodiment of this utility model, the inner wall of the limiting groove is provided with a positioning groove, and there are two positioning grooves, which are respectively located at both ends of the limiting groove. The outer surface of the push block is embedded with a protruding positioning bead, and a compression spring is connected between the positioning bead and the push block.

[0018] Beneficial effects: This application provides a fluid check valve that improves upon the existing spring-type valve body by using magnetic force to provide the driving force. Regardless of the type of fluid transported in the valve body, it will not come into contact with the reset element, thus preventing damage to the reset element and affecting the movement of the moving plug assembly, thereby achieving a long service life for the valve body. Furthermore, the piston body is sleeved on the outer surface of the plug, and a sealing ring is provided at the connection surface, eliminating leakage problems. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the fluid check valve provided in the embodiments of this application;

[0021] Figure 2A cross-sectional perspective view of an embodiment of this application;

[0022] Figure 3 A cross-sectional perspective view of the docking shell provided for an embodiment of this application;

[0023] Figure 4 An exploded view provided for an embodiment of this application.

[0024] In the diagram: 100, valve body; 101, connector; 110, sealing cap; 111, fastening screw; 113, sealing gasket; 115, limiting groove; 117, positioning groove; 130, mating shell; 131, through groove; 133, receiving groove; 135, snap ring; 300, reset component; 310, first magnetic ring; 320, second magnetic ring; 330, push block; 331, positioning bead; 500, sealing assembly; 510, piston body; 530, plug. Detailed Implementation

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0028] Please see Figures 1-4 This utility model provides a fluid check valve, which aims to improve the problem of short service life.

[0029] This application provides a fluid check valve, including a valve body 100, a reset member 300, and a sealing assembly 500;

[0030] The reset component 300 includes a first magnetic ring 310 and a second magnetic ring 320. The first magnetic ring 310 applies a magnetic force to the second magnetic ring 320 to push the second magnetic ring 320 to reset.

[0031] The sealing assembly 500 includes a piston body 510 and a plug 530. The plug 530 is fixed inside the valve body 100. The piston body 510 is slidably disposed at one end of the plug 530. The inner ring of the piston body 510 is sealed to the plug 530. The second magnetic ring 320 is embedded in the outer surface of the piston body 510.

[0032] To facilitate the maintenance of internal vulnerable parts, in a preferred embodiment of this utility model, the valve body 100 is provided with a plug-in interface 101 on its side wall. The plug-in interface 101 communicates with the internal channel of the valve body 100. A sealing cover 110 is provided at the upper port of the plug-in interface 101. A docking shell 130 is fitted inside the plug-in interface 101. The upper end of the docking shell 130 is fixedly connected to the sealing cover 110.

[0033] The docking shell 130 has a through groove 131 on its side wall. The two ends of the through groove 131 are engaged with the inner channel of the valve body 100. The piston body 510 is slidably disposed in the through groove 131. The plug 530 is fixed to one end of the through groove 131. The valve body 100 adopts a split design. The docking shell 130 is provided for easy disassembly and maintenance. The first magnetic ring 310 is disposed on the outside of the valve body 100 for easy adjustment and maintenance.

[0034] In a preferred embodiment of the present invention, the upper end of the docking shell 130 is provided with a receiving groove 133, the receiving groove 133 covers the outer surface of the through groove 131, and the first magnetic ring 310 is disposed in the receiving groove 133.

[0035] In a preferred embodiment of this utility model, the valve body 100 has a threaded hole on its surface, and the sealing cover 110 has countersunk holes at equal intervals at its edge. A fastening screw 111 is provided in the countersunk hole, and the lower end of the fastening screw 111 is threadedly connected to the threaded hole.

[0036] In a preferred embodiment of the present invention, a sealing gasket 113 is provided at the junction of the sealing cover 110 and the insertion interface 101, and the sealing gasket 113 is disposed at the lower end of the sealing cover 110.

[0037] In a preferred embodiment of the present invention, one end of the plug 530 is chamfered, and a sealing ring that seals against the piston body 510 is fitted on the outer surface of the plug 530.

[0038] In a preferred embodiment of the present invention, the first magnetic ring 310 and the second magnetic ring 320 are concentrically arranged, the second magnetic ring 320 is concentrically arranged with the piston body 510, and the piston body 510 is concentrically arranged with the plug 530.

[0039] In a preferred embodiment of the present invention, the first magnetic ring 310 is a permanent magnet or a winding that generates a magnetic field after being energized, and the inner wall of the through groove 131 is provided with a snap-fit ​​groove, in which a snap-fit ​​spring 135 is snapped.

[0040] Existing check valves can only conduct in one direction and cannot conduct in two directions as needed. In a preferred embodiment of this utility model, the first magnetic ring 310 is slidably sleeved on the outer surface of the through groove 131, and a limiting groove 115 is formed on the surface of the sealing cover 110. A push block 330 is slidably engaged in the limiting groove 115, and the lower end of the push block 330 is fixedly connected to the first magnetic ring 310. The push block 330 is provided to facilitate the adjustment of the position of the first magnetic ring 310. When bidirectional conduction is required, pushing the push block 330 causes the first magnetic ring 310 to slide away from the end of the plug 530, so that the piston body 510 and the plug 530 are separated. This facilitates bidirectional conduction and is convenient for use in emergency situations.

[0041] In a preferred embodiment of the present invention, the inner wall of the limiting groove 115 is provided with a positioning groove 117, and there are two positioning grooves 117, which are respectively located at both ends of the limiting groove 115. The outer surface of the push block 330 is fitted with a protruding positioning bead 331, and a compression spring is connected between the positioning bead 331 and the push block 330.

[0042] The working principle of this fluid check valve is as follows: During use, the first magnetic ring 310 and the second magnetic ring 320 are magnets, requiring no additional structure or facilities, making them convenient to use. The first magnetic ring 310 can also be a winding, utilizing the characteristic of generating a magnetic field when energized to achieve the same effect as a permanent magnet, with better controllability and adjustability. The piston body 510 has a movement gap at one end of the plug 530; this distance enables the valve body 100 to open or close. The piston body 510 is fitted onto the outer surface of the plug 530 for sealing, achieving closure; the piston body 510 separates from the plug 530, achieving valve opening.

[0043] Since the first magnetic ring 310 drives the second magnetic ring 320 to drive the piston body 510 to be fitted onto the outer surface of the plug 530 for sealing, when there is fluid thrust at one end of the valve body 100, the piston body 510 is pushed from one end to separate from the plug 530, thereby opening the valve body 100. When the fluid thrust is less than the magnetic force between the first magnetic ring 310 and the second magnetic ring 320, the piston body 510 resets and is fitted onto the plug 530 to achieve closure. When fluid enters from the opposite direction, it directly pushes the piston body 510 to be fitted onto the surface of the plug 530, preventing flow and achieving a one-way conduction effect.

[0044] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A fluid check valve, characterized in that, include Valve body (100); A reset member (300) includes a first magnetic ring (310) and a second magnetic ring (320), wherein the first magnetic ring (310) applies a magnetic force to the second magnetic ring (320) to push the second magnetic ring (320) to reset; A sealing assembly (500) includes a piston body (510) and a plug (530). The plug (530) is fixed inside the valve body (100). The piston body (510) is slidably disposed at one end of the plug (530). The inner ring of the piston body (510) is sealed to the plug (530). The second magnetic ring (320) is embedded in the outer surface of the piston body (510).

2. A fluid check valve according to claim 1, characterized in that, The valve body (100) has a plug-in interface (101) on its side wall. The plug-in interface (101) is connected to the internal channel of the valve body (100). A sealing cover (110) is provided on the upper port of the plug-in interface (101). A docking shell (130) is provided inside the plug-in interface (101). The upper end of the docking shell (130) is fixedly connected to the sealing cover (110). The side wall of the docking shell (130) is provided with a through groove (131). The two ends of the through groove (131) are engaged with the inner channel of the valve body (100). The piston body (510) is slidably disposed in the through groove (131). The plug (530) is fixed at one end of the through groove (131).

3. A fluid check valve according to claim 2, characterized in that, The upper end of the docking shell (130) is provided with a receiving groove (133), the receiving groove (133) covers the outer surface of the through groove (131), and the first magnetic ring (310) is disposed in the receiving groove (133).

4. A fluid check valve according to claim 2, characterized in that, The valve body (100) has a threaded hole on its surface, and the sealing cover (110) has countersunk holes at equal intervals at its edge. A fastening screw (111) is installed in the countersunk hole, and the lower end of the fastening screw (111) is threadedly connected to the threaded hole.

5. A fluid check valve according to claim 2, characterized in that, A sealing gasket (113) is provided at the joint between the sealing cap (110) and the insertion interface (101), and the sealing gasket (113) is located at the lower end of the sealing cap (110).

6. A fluid check valve according to claim 1, characterized in that, One end of the plug (530) is chamfered, and a sealing ring that seals against the piston body (510) is fitted on the outer surface of the plug (530).

7. A fluid check valve according to claim 1, characterized in that, The first magnetic ring (310) and the second magnetic ring (320) are concentrically arranged, the second magnetic ring (320) and the piston body (510) are concentrically arranged, and the piston body (510) and the plug (530) are concentrically arranged.

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