A new type of check valve

Abstract

The utility model discloses a magnetic valve seat is provided with magnetic drive part outside, one aspect, magnetic drive part is combined or is separated with magnetic valve seat under the flow direction force of fluid in valve body and under the magnetic force, realizes the opening and closing of valve, another aspect, magnetic drive part has the flow guiding effect, is used for changing the flow direction of fluid, reduces the probability that the valve clack pad is washed and is deformed, is favorable for improving the service life of check valve.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, and specifically to a novel check valve. Background Technology

[0002] In existing straight-through axial flow check valves, the valve disc relies on a compression spring for reset. Check valves occupy a large installation space, and the spring may fail due to repeated expansion and contraction, causing the check valve to malfunction. Furthermore, check valves generate significant noise when open, severely impacting the surrounding working environment. Utility Model Content

[0003] The purpose of this utility model is to provide a new type of check valve that reduces the limited installation space inside the valve cavity, which is beneficial to the miniaturization of the valve structure.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A novel check valve includes a valve body with an input chamber and an output chamber at both ends that communicate with the outside. A magnetic valve seat, coaxial with and sealed to the valve body, is provided between the input and output chambers. The output chamber is provided with a labyrinth-type flow guide, a valve stem guide assembly, and a magnetic drive component movably fitted within the valve stem guide assembly. The magnetic drive component, under the influence of the flow direction force and magnetic force of the fluid within the valve body, engages with or disengages from the magnetic valve seat to open and close the input and output chambers.

[0006] Furthermore, the magnetic drive component includes a valve disc component and a valve stem connected to each other. The valve disc component is located adjacent to the magnetic valve seat and is disposed facing each other in the output chamber. The valve stem is fitted into the valve stem guide assembly and is connected to the valve disc component by screws.

[0007] Furthermore, the valve disc component includes a valve disc pad and a limiting member for limiting the valve disc pad. The limiting member includes a valve disc seat disposed on the side of the valve disc pad facing the output chamber and a valve disc pressure block embedded in the valve disc seat and disposed on the side of the valve disc pad facing the magnetic valve seat.

[0008] Furthermore, the valve disc gasket is made of rubber magnets, and the magnetic valve seat is made of magnetically conductive material.

[0009] Furthermore, a second elastic seal is provided between the valve disc gasket and the valve disc seat.

[0010] Furthermore, the fairing is composed of a shuttle-shaped fairing frame with evenly distributed circumference.

[0011] Furthermore, the magnetic valve seat and the input cavity are installed using a threaded connection.

[0012] Furthermore, the magnetic valve seat and the valve body are sealed together using a first elastic seal.

[0013] Furthermore, the flatness of the magnetic valve seat end face plane does not exceed 0.05mm.

[0014] Furthermore, the input cavity and output cavity form a through axial flow structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This utility model has a simple structure, a scientific and reasonable design, and is easy to use. It reduces the limited installation space inside the valve cavity and is conducive to the miniaturization of the valve structure.

[0017] The labyrinth-type flow guide in the valve body of this utility model is composed of a shuttle-type flow guide skeleton with evenly distributed circumference. Its function is to reduce the direct scouring of fluid against the inner wall of the valve body, causing the fluid to swirl and impact repeatedly in the inner cavity of the valve body, thereby achieving the function of noise reduction.

[0018] This utility model features a magnetic drive component externally mounted on the magnetic valve seat. On one hand, the magnetic drive component, under the influence of the fluid flow direction within the valve body and the magnetic force, engages or disengages with the magnetic valve seat, thereby opening and closing the valve. On the other hand, the magnetic drive component has a flow guiding function, which changes the fluid flow direction, reduces the probability of the valve disc being eroded and deformed, and helps to improve the service life of the check valve. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the valve disc component.

[0021] Figure 3 This is an enlarged view of point A on the valve disc component.

[0022] Figure 4 This is a schematic diagram of a labyrinth-type fairing structure.

[0023] Figure 5 This is a schematic diagram illustrating the principle of valve closure and reset in this utility model.

[0024] Figure 6 This is a schematic diagram illustrating the principle of valve opening in this utility model.

[0025] Figure 7 This is a schematic diagram of a traditional type of check valve.

[0026] The names corresponding to the reference numerals in the attached figures are as follows:

[0027] 1-Valve body, 2-Magnetic valve seat, 3-Magnetic drive component, 4-First elastic seal, 11-Input chamber, 12-Output chamber, 101-Labyrinth-type flow guide, 102-Valve stem guide kit, 31-Valve disc component, 32-Valve stem, 33-Screw, 311-Valve disc pressure block, 312-Valve disc gasket, 313-Valve disc seat, 314-Second elastic seal. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] like Figure 1As shown, this utility model provides a novel check valve, including a valve body 1. The valve body 1 has an input chamber 11 and an output chamber 12 at both ends, communicating with the outside. The input chamber 11 and the output chamber 12 form a straight-through axial flow structure. A magnetic valve seat 2, coaxial with the valve body 1 and sealingly fitted to it, is provided between the input chamber 11 and the output chamber 12. The output chamber 12 contains a labyrinth-type flow guide shroud 101, a valve stem guide assembly 102, and a magnetic drive component 3 movably fitted within the valve stem guide assembly 102. The magnetic drive component 3, under the influence of the flow direction force and magnetic force of the fluid within the valve body 1, engages or disengages with the magnetic valve seat 2 to open and close the input chamber 11 and the output chamber 12.

[0032] This utility model has a simple structure, a scientific and reasonable design, and is easy to use. External fluid enters the valve body 1 through the input chamber 11. Under the action of the fluid flow direction force and magnetic force, the magnetic drive component 3 is forced to adhere to or disengage from the magnetic valve seat 2 to open and close the input chamber 11 and the output chamber 12. Figure 7 The diagram shows the structure of a traditional type of check valve using a traditional compression spring. Compared with the traditional compression spring, this invention utilizes magnetic force and fluid flow force to open and close the valve, reducing the limited installation space inside the valve cavity and facilitating the miniaturization of the valve structure.

[0033] Preferably, the magnetic drive component 3 includes a valve disc component 31 and a valve stem 32 connected to each other. The valve disc component 31 is located adjacent to the magnetic valve seat 2 and facing each other within the output chamber 12. The valve stem 32 is fitted into the valve stem guide assembly 102 and connected to the valve disc component 31 by a screw 33. The valve stem 32 drives the valve disc component 31 to reciprocate, thereby opening and closing the valve. The valve stem guide assembly 102 prevents the magnetic drive component 3 from moving radially during fluid impact motion.

[0034] like Figure 2 and Figure 3 As shown, preferably, the valve disc component 31 includes a valve disc pad 312 and a limiting member for limiting the valve disc pad 312. The limiting member includes a valve disc seat 313 disposed on the side of the valve disc pad 312 facing the output chamber 12 and a valve disc pressure block 311 embedded in the valve disc seat 313 and disposed on the side of the valve disc pad 312 facing the magnetic valve seat 2. The valve disc seat 313 and the valve disc pressure block 311 together limit and fix the valve disc pad 312. At the same time, the valve disc seat 313 and the valve disc pressure block 311 are also used to change the direction of the fluid, specifically so that the flow direction of the fluid medium input through the valve disc pad 312 after flowing through the valve disc seat 313 is different from the direction of the valve disc pad 312, reducing the probability of the valve disc pad 313 being eroded and deformed, which is beneficial to improving the service life of the check valve.

[0035] Preferably, the valve disc gasket 312 is made of rubber magnet, and the magnetic valve seat 2 is made of magnetically conductive material. The valve disc gasket 312 and the magnetic valve seat 2 are attracted directly by magnetic attraction. Figure 5 and Figure 6 As shown, when the magnetic attraction of the valve disc pad 312 reaches the pressure required for the valve disc component 31 to reset and close, the valve closes due to the mutual attraction between the valve disc pad 312 and the magnetic valve seat 2. Conversely, when the force exerted by the fluid medium on the valve disc component 31 is greater than the magnetic force between the valve disc pad 312 and the magnetic valve seat 2, the valve opens. This invention replaces the traditional compression spring with magnetic attraction, reducing the limited installation space in the valve body cavity and facilitating the miniaturization of valve structures of the same specifications. Preferably, the flatness of the end face of the magnetic valve seat 2 does not exceed 0.05 mm.

[0036] Preferably, a second elastic seal 314 is provided between the valve disc gasket 312 and the valve disc seat 313. The second elastic seal 314 is used to prevent fluid medium from leaking out along the gap between adjacent parts.

[0037] like Figure 4 As shown, preferably, the flow guide shroud 101 is composed of a shuttle-shaped flow guide skeleton with evenly distributed circumference. Its function is to reduce the direct scouring of the fluid on the inner wall of the valve body, causing the fluid to swirl and impact repeatedly in the inner cavity of the valve body, thereby achieving the function of noise reduction.

[0038] Preferably, the magnetic valve seat 2 and the valve body 1 are sealed together by a first elastic seal 4. The first elastic seal 4 is used to prevent fluid medium from leaking out along the gap between adjacent parts.

[0039] Finally, it should be noted that the above embodiments are merely preferred embodiments of this utility model used to illustrate the technical solutions of this utility model, and are not intended to limit it, nor are they intended to limit the patent scope of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. That is to say, any changes or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but whose technical problems are still consistent with those of this utility model, should be included within the protection scope of this utility model. In addition, the direct or indirect application of the technical solutions of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. A novel check valve, characterized in that, The valve body (1) includes an input chamber (11) and an output chamber (12) at both ends, which are connected to the outside. A magnetic valve seat (2) is provided between the input chamber (11) and the output chamber (12) and is coaxial with the valve body (1) and sealed to the valve body (1). The output chamber (12) is provided with a labyrinth-type flow guide (101), a valve stem guide kit (102), and a magnetic drive component (3) that is movably fitted in the valve stem guide kit (102). The magnetic drive component (3) is attached to or detached from the magnetic valve seat (2) under the action of the flow direction force and magnetic force of the fluid in the valve body (1) to open and close the input chamber (11) and the output chamber (12).

2. The novel check valve according to claim 1, characterized in that, The magnetic drive component (3) includes a valve disc component (31) and a valve stem (32) connected to each other. The valve disc component (31) is adjacent to the magnetic valve seat (2) and is arranged facing each other in the output chamber (12). The valve stem (32) is fitted into the valve stem guide kit (102) and is connected to the valve disc component (31) by a screw (33).

3. A novel check valve according to claim 2, characterized in that, The valve disc component (31) includes a valve disc pad (312) and a limiting member for limiting the valve disc pad (312). The limiting member includes a valve disc seat (313) disposed on the side of the valve disc pad (312) facing the output chamber (12) and a valve disc pressure block (311) embedded in the valve disc seat (313) and disposed on the side of the valve disc pad (312) facing the magnetic valve seat (2).

4. A novel check valve according to claim 3, characterized in that, The valve disc gasket (312) is made of rubber magnet, and the magnetic valve seat (2) is made of magnetic material.

5. A novel check valve according to claim 3, characterized in that, A second elastic seal (314) is provided between the valve disc gasket (312) and the valve disc seat (313).

6. A novel check valve according to claim 1, characterized in that, The fairing (101) is composed of a shuttle-shaped fairing frame with evenly distributed circumference.

7. A novel check valve according to claim 1, characterized in that, The magnetic valve seat (2) and the input chamber (11) are installed using a threaded structure.

8. A novel check valve according to claim 1, characterized in that, The magnetic valve seat (2) and the valve body (1) are sealed together by a first elastic seal (4).

9. A novel check valve according to claim 1, characterized in that, The flatness of the end face of the magnetic valve seat (2) shall not exceed 0.05 mm.

10. A novel check valve according to claim 1, characterized in that, The input cavity (11) and the output cavity (12) form a straight-through axial flow structure.

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