CN118257880A

CN118257880A - One-way valve

Info

Publication number: CN118257880A
Application number: CN202211691783.3A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Hangzhou Sanhua Research Institute Co Ltd
Filing date: 2022-12-28
Publication date: 2024-06-28

Abstract

The invention discloses a one-way valve, which comprises a valve body part and a valve core part, wherein the valve core part is arranged in the valve body part, the valve core part comprises a valve seat, a magnetic part and a filter part, the valve seat is of an annular structure with a through hole, the valve seat is provided with a limiting groove, the valve seat is provided with a bottom wall part and a side wall part corresponding to the limiting groove, the bottom wall part radially protrudes out of the side wall part, the bottom wall part is close to the through hole relative to the side wall part, the filter part comprises a fixing seat, the fixing seat is fixed with the valve seat, the magnetic part is at least partially positioned in the limiting groove, and the magnetic part is axially limited between the fixing seat and the bottom wall part. The scheme can effectively prevent the magnetic part from falling off from the valve seat, and ensures the working reliability of the one-way valve.

Description

One-way valve

[ Field of technology ]

The invention relates to the technical field of fluid control, in particular to a one-way valve.

[ Background Art ]

Fig. 1 is a schematic view showing a structure of a check valve of the related art, which includes a valve body 1', a valve seat 21', a filter screen 22 'installed at an inlet side of the valve seat 21', a magnetic member 23 'installed at an outlet side of the valve seat 21', and a diaphragm 31 'installed in a retainer 3'. The diaphragm 31 'is a magnetic conductive diaphragm, and the diaphragm 31' can move towards the valve seat 21 'to realize sealing under the attraction of the magnetic piece 23'.

In the above technical solution, the magnetic member 23' is pressed and fixed into the valve seat 21' from one side of the valve seat 21', and the fixing between the two is achieved by the interference fit between the magnetic member 23' and the valve seat 21', but in some extreme cases, for example, when the pressure on both sides of the check valve changes rapidly, the magnetic member 23' may fall off from the valve seat 21' under abrupt pressure change, resulting in product damage.

[ Invention ]

The invention aims to provide a one-way valve with high reliability, wherein a magnetic part is not easy to fall off from a valve seat.

In order to achieve the above purpose, the present invention adopts the following scheme:

The utility model provides a check valve, includes valve body part and case part, the case part is built-in the valve body part, the case part includes disk seat, magnetic part and filter, the disk seat is for having the annular structure of through-hole, the disk seat has spacing recess, the disk seat has diapire portion and the lateral wall portion that spacing recess corresponds, diapire portion radial protrusion in the lateral wall portion, diapire portion is relative the lateral wall portion is close to the through-hole, the filter includes the fixing base, the fixing base with the disk seat is fixed, the magnetic part is located at least partly spacing recess, the magnetic part axial limit is located the fixing base with between the diapire portion.

The check valve that above-mentioned technical scheme provided, case part include disk seat, magnetic part and filter, and magnetic part is located the spacing recess of disk seat at least partially, and magnetic part axial is spacing between the diapire portion that filter fixing base and spacing recess correspond, so set up, can prevent effectively that the magnetic part drops from the disk seat and go out, guarantee the operational reliability of check valve.

[ Description of the drawings ]

FIG. 1 is a schematic diagram of a check valve in the related art;

FIG. 2 is a schematic view of an embodiment of a check valve according to the present invention;

FIG. 3 is a schematic cross-sectional view of the valve seat of FIG. 2;

FIG. 4 is a schematic view of another embodiment of a valve seat;

FIG. 5 is a schematic illustration of the cooperation of a valve seat with one embodiment of a filter element;

FIG. 6 is a schematic diagram of an embodiment of a magnetic member;

FIG. 7 is a schematic view of an embodiment of a filter;

FIG. 8 is a schematic diagram illustrating the cooperation of a valve plate frame and a valve plate according to an embodiment.

[ Detailed description ] of the invention

The present invention will be further described in detail below with reference to the drawings and detailed description for the purpose of better understanding of the technical solution of the present invention to those skilled in the art.

Referring to fig. 2, fig. 2 is a schematic diagram showing the overall structure of an embodiment of the check valve of the present invention, which includes a valve body part 1 and a valve core part 2, wherein the valve core part 2 is built in the valve body part 1 and fixed with the valve body part 1. The valve core component 2 comprises a valve seat 21, a magnetic component 23 and a filter component 22, in this embodiment, the valve body component 1 comprises a first valve body 11 and a second valve body 12, the first valve body 11 comprises a fluid inlet, the second valve body 12 comprises a fluid outlet, the first valve body 11 and the second valve body 12 are welded and fixed with the valve seat 21 respectively, and of course, the first valve body 11 and the second valve body 12 can also be in an integrated tubular structure.

Referring to fig. 2 to 4, in the present embodiment, the valve seat 21 has an annular structure with a through hole 214, the valve seat 21 has a limiting groove 215, the valve seat 21 has a bottom wall portion 2161 and a side wall portion 2162 corresponding to the limiting groove 215, the bottom wall portion 2161 radially protrudes from the side wall portion 2162, the bottom wall portion 2161 is close to the through hole 214 with respect to the side wall portion 2162, the filter member 22 includes a fixed seat 222, the fixed seat 222 is fixed to the valve seat 21, the magnetic member 23 is at least partially located in the limiting groove 215, and the magnetic member 23 is axially limited between the fixed seat 222 and the bottom wall portion 216.

The check valve that this embodiment provided, case part 2 include disk seat 21, magnetic part 23 and filter element 22, and magnetic part 23 is located the spacing recess 215 of disk seat 21 at least partially, and magnetic part 23 axial is spacing between filter element fixing base 222 and the diapire portion 2161 that spacing recess 215 corresponds, so set up, can reduce the cracked risk of magnetic part that produces when magnetic part 23 and disk seat 21 pressure equipment are fixed in the background art to can prevent effectively that magnetic part 23 from coming off and going out from 21 in the disk seat, guarantee the operational reliability of check valve.

In this embodiment, the valve seat 21 has a body 211 and a first annular protrusion 212, the first annular protrusion 212 protrudes from the body 211 toward the filter element 22 along the axial direction of the valve seat 21, the first annular protrusion 212 is in interference fit with the fixing seat 222 of the filter element 22, and the first annular protrusion 212 is located at the outer periphery of the fixing seat 222. In this way, the filter element 22 and the valve seat 21 can be easily fixed, and of course, the filter element 22 and the valve seat 21 can be fixed by welding, caulking, or the like.

In the radial direction of the valve seat 21, the distance between the corresponding side wall portions 2162 of the limiting groove 215 is greater than the length of the magnetic member 23 and smaller than the inner diameter of the first annular protrusion 212, and the inner diameter of the fixing seat 222 is smaller than the length of the magnetic member 23. In this way, the risk that the magnetic piece 23 is blocked in the installation process can be reduced, the magnetic piece 23 is further ensured not to fall off from the valve seat 21, and the working reliability of the one-way valve is ensured.

In this embodiment, the magnetic member 23 has a bar-shaped structure, the limiting groove 215 includes a first groove 2151 and a second groove 2152 symmetrically disposed along a radial direction of the valve seat 21, and two ends of the magnetic member 23 are respectively located in the first groove 2151 and the second groove 2152.

Of course, in other embodiments, the magnetic member 23 may also have an annular structure, and it is understood that the limiting groove 215 may be correspondingly configured as an annular groove, which is not described herein.

Referring to fig. 5, in the present embodiment, in the axial direction of the valve seat 21, the depth of the limiting groove 215 is greater than the height of the magnetic member 23, and the valve core component 2 further includes a spacer 24, where the spacer 24 is disposed between the magnetic member 23 and the fixing seat 222. The gasket 24 can limit the movement of the magnetic member 23 in the axial direction of the valve seat 21, and ensure the operational reliability of the magnetic member 23. Of course, in other embodiments, the axial depth of the limiting groove 215 along the valve seat 21 may also be comparable to the height of the magnetic member 23.

Wherein, the gasket 24 may be a metal gasket or a non-metal gasket, and when the magnetic member 23 is in a strip shape, the gasket 24 may be in a strip shape corresponding to the length of the magnetic member 23, or may be in two blocks corresponding to the first groove 2151 and the second groove 2152; when the magnetic member 23 is annular, the spacer 24 may be a corresponding annular spacer.

Referring to fig. 6, in the present embodiment, to further reduce the risk of the magnetic member 23 breaking, the magnetic member 23 includes a magnetic body 231 and a protecting belt 232, the magnetic body 231 includes a first wall portion 2311 and a second wall portion 2312, the first wall portion 2311 faces the corresponding side wall portion 2162 of the limiting recess 215, the third wall portion 2313 faces the filter member 22, and the protecting belt 232 covers the first wall portion 2311 and the second wall portion 2312.

Wherein, when the magnetic member 23 is in a strip shape, the first wall portion 2311 includes two sub-wall portions facing the corresponding side wall portion of the first recess 2151 and the corresponding side wall portion of the second recess 2152, respectively; when the magnetic member 23 is annular, the first wall portion 2311 is an annular outer peripheral wall portion of the magnetic member 23. The protective tape 232 may be attached to the wall of the magnetic member body 231, and the protective tape 232 may be made of an elastic fluorine-resistant oil-resistant material.

Like this, the protective belt 232 plays the guard action to magnetic part 23, reduces the impact strength that magnetic part 23 received to reduce the cracked risk of magnetic part 23, in addition, protective belt 232 can further avoid rivers frequently to strike magnetic part body 231, improves magnetic part 23's life.

Referring to fig. 7 to 8, in the present embodiment, the filter 22 includes a filter screen 221 and a fixing base 222 that are relatively fixed, the filter screen 221 has a hemispherical structure, the fixing base 222 has a circular ring structure, the filter screen 221 and the fixing base 222 are made of metal materials, the filter screen 221 and the fixing base 222 are welded and fixed, the opening of the filter screen 221 faces the fluid outlet, and the bottom of the filter screen 221 is closer to the fluid inlet than the opening of the filter screen 221. In this way, the pressure drop requirement of the filter element 22 can be reduced to some extent, and the impurity blockage is not easy to cause.

The valve core part 2 further comprises a valve block 32 and a valve block frame 31, the valve seat 21 is provided with a valve port, the valve block frame 31 is fixedly welded with the valve seat 21, the valve block 32 is a magnetic conduction valve block 32, and the valve block 32 can slide in the valve block frame 31 along the axial direction of the valve body part 1 so as to open or close the valve port. Specifically, the valve plate 32 can overcome the attractive force of the magnetic member 23 to leave the valve port under the action of the fluid pressure, and when the fluid pressure is reduced, the valve plate 32 can close the valve port under the action of the attractive force of the magnetic member 23.

In this embodiment, the valve seat 21 has a body portion 211 and a second annular protrusion 213, the second annular protrusion 213 protrudes from the body portion 211 toward the valve plate frame 31 along the axial direction of the valve seat 21, the second annular protrusion 213 has a valve port, the valve plate frame 31 has a circular annular fixing portion 311, the fixing portion 311 is in interference fit with the second annular protrusion 213, and the fixing portion 311 is located at the outer periphery of the second annular protrusion 213. The valve plate holder 31 and the valve seat 21 can be fixed simply in this way, and of course, the valve plate holder 31 and the valve seat 21 can be fixed by welding, riveting or the like.

The first valve body 11 and the second valve body 12 are made of stainless steel materials, the valve seat 21 and the valve plate frame 31 are made of stainless steel materials, the first valve body 11 and the valve seat 21 are welded and fixed by laser welding, the second valve body 12 and the valve seat 21 are welded and fixed by laser welding, the valve plate frame 31 and the valve seat 21 are welded and fixed by laser welding, the process is simple, the processing efficiency is high, the cost is low, and other steels can be adopted.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that the present invention may be modified, combined or equivalent thereto, and all modifications and improvements thereto without departing from the spirit and scope of the present invention are intended to be included in the scope of the appended claims.

Claims

1. A one-way valve is characterized by comprising a valve body part (1) and a valve core part (2), wherein the valve core part (2) is arranged in the valve body part (1), the valve core part (2) comprises a valve seat (21), a magnetic part (23) and a filter part (22),

The valve seat (21) is of an annular structure with a through hole (214), the valve seat (21) is provided with a limit groove (215), the valve seat (21) is provided with a bottom wall part (2161) and a side wall part (2162) corresponding to the limit groove (215), the bottom wall part (2161) radially protrudes out of the side wall part (2162), the bottom wall part (2161) is close to the through hole (214) relative to the side wall part (2162),

The filter element (22) comprises a fixing seat (222), the fixing seat (222) is fixed with the valve seat (21), the magnetic element (23) is at least partially positioned in the limiting groove (215), and the magnetic element (23) is axially limited between the fixing seat (222) and the bottom wall part (216).

2. The one-way valve according to claim 1, wherein the valve seat (21) has a body portion (211) and a first annular protrusion (212), the first annular protrusion (212) protrudes from the body portion (211) toward the filter element (22) in an axial direction of the valve seat (21), the first annular protrusion (212) is interference-fitted with a fixing seat (222) of the filter element (22), and the first annular protrusion (212) is located at an outer periphery of the fixing seat (222).

3. A one-way valve according to claim 2, wherein in a radial direction of the valve seat (21), a distance between the corresponding side wall portions (2162) of the limit groove (214) is larger than a length of the magnetic member (23) and smaller than an inner diameter of the first annular protrusion (212), and an inner diameter of the fixing seat (222) is smaller than a length of the magnetic member (23).

4. The one-way valve according to claim 1, wherein the magnetic member (23) has a bar-shaped structure, the limit groove (215) includes a first groove (2151) and a second groove (2152) symmetrically disposed along a radial direction of the valve seat (21), and two ends of the magnetic member (23) are respectively located in the first groove (2151) and the second groove (2152).

5. The one-way valve according to claim 1, wherein the magnetic member (23) includes a magnetic body (231) and a protective tape (232), the magnetic body (231) includes a first wall portion (2311) and a second wall portion (2312), the first wall portion (2311) faces the corresponding side wall portion (2162) of the limit groove (215), the second wall portion (2312) faces the filter member (22), and the protective tape (232) covers the first wall portion (2311) and the second wall portion (2312).

6. A one-way valve according to claim 1, characterized in that the depth of the limit groove (215) is greater than the height of the magnetic member (23) in the axial direction of the valve seat (21), the spool part (2) further comprising a spacer (24), the spacer (24) being placed between the magnetic member (23) and a fixed seat (222).

7. A non-return valve according to claim 1, characterized in that the valve body part (1) comprises a first valve body (11) and a second valve body (12), the first valve body (11) having a fluid inlet, the second valve body (12) having a fluid outlet, the first valve body (11) being welded to the valve seat (21), the second valve body (12) being welded to the valve seat (21).

8. The one-way valve according to claim 7, wherein the filter member (22) further comprises a filter screen (221), the filter screen (221) has a hemispherical structure, the fixing seat (222) has a circular ring structure, both the filter screen (221) and the fixing seat (222) are made of metal materials, the filter screen (221) and the fixing seat (222) are welded and fixed, an opening of the filter screen (221) faces the fluid outlet, and a bottom of the filter screen (221) is closer to the fluid inlet than the opening of the filter screen (221).

9. The one-way valve according to claim 1, characterized in that the valve core part (2) further comprises a valve plate (32) and a valve plate frame (31), the valve plate (32) is a magnetic conductive valve plate (32), the valve plate frame (31) is welded and fixed with the valve seat (21), the valve seat (21) is provided with a valve port, and the valve plate (32) can slide in the valve plate frame (31) along the axial direction of the valve body part (1) to open or close the valve port.

10. The one-way valve according to claim 9, wherein the valve seat (21) has a body portion (211) and a second annular protrusion (213), the second annular protrusion (213) protrudes from the body portion (211) toward the valve sheet frame (31) in an axial direction of the valve seat (21), the second annular protrusion (213) has the valve port, the valve sheet frame (31) has a circular-annular fixing portion (311), the fixing portion (311) is interference-fitted with the second annular protrusion (213), and the fixing portion (311) is located at an outer periphery of the second annular protrusion (213).