CN212080250U

CN212080250U - Valve body assembly and combined valve with same

Info

Publication number: CN212080250U
Application number: CN202020529193.0U
Authority: CN
Inventors: 俞舟; 冯忠波; 康志军
Original assignee: Dunan Environment Technology Co Ltd
Current assignee: Dunan Environment Technology Co Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-12-04
Anticipated expiration: 2030-04-10

Abstract

The utility model provides a valve body subassembly and have its combination valve, this valve body subassembly includes: the shell comprises a first channel and a second channel which are mutually communicated, and the inner diameter of the middle part of the first channel is smaller than that of the middle part of the second channel; a filter member disposed in the first passage, the filter member for filtering the fluid; and the valve core assembly is movably arranged in the second channel, is positioned at the downstream of the filter element along the fluid flow direction and has a blocking position for blocking the second channel and an open position. Through the technical scheme that this application provided, can solve the problem that the check valve among the prior art easily blockked up.

Description

Valve body assembly and combined valve with same

Technical Field

The utility model relates to a valve body technical field particularly, relates to a valve body subassembly and have its combination valve.

Background

At present, the existing check valve structure has no filtering structure, so that in the use process, impurities in fluid easily block a valve port to cause the failure of the check valve and influence the normal use of the check valve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a valve body subassembly and have its combination valve to solve the problem that the check valve among the prior art easily blockked up.

According to the utility model discloses an aspect provides a valve body subassembly, and the valve body subassembly includes: the shell comprises a first channel and a second channel which are mutually communicated, and the inner diameter of the middle part of the first channel is smaller than that of the middle part of the second channel; a filter member disposed in the first passage, the filter member for filtering the fluid; and the valve core assembly is movably arranged in the second channel, is positioned at the downstream of the filter element along the fluid flow direction and has a blocking position for blocking the second channel and an open position.

Further, the housing includes: the filter pipe is provided with a first channel, and the filter element is arranged in the filter pipe; the valve pipe, the valve pipe has the second passageway, and the filter tube is connected with the valve pipe, and the removable setting of case subassembly is in the valve pipe.

Further, the housing further includes: the valve cover is arranged between the filter pipe and the valve pipe, one end of the valve cover is connected with the filter pipe, the other end of the valve cover is connected with the valve pipe, and the filter pipe is communicated with the valve pipe through the valve cover.

Further, the shell is of an integrally formed structure.

Further, the valve body assembly further comprises a first sealing member, the first sealing member is arranged at the upstream of the valve core assembly, and the valve core assembly is matched with the first sealing member to block the second channel.

Further, the second passageway has an inlet end and an outlet end that are disposed opposite each other, and the case assembly includes: a piston rod movably disposed within the second channel; a second seal disposed at an end of the piston rod proximate the inlet end; and the gasket is arranged on the piston rod and used for fixing the position of the second sealing element on the piston rod.

Further, the piston rod is provided with the guiding hole, and the case subassembly still includes: the guide post is fixedly arranged in the second channel and is positioned at the downstream of the piston rod, one end of the guide post is arranged in the guide hole in a penetrating mode, the guide post is used for guiding the piston rod, a balance hole is formed in the guide post, one end of the balance hole is communicated with the guide hole, and the other end of the balance hole is communicated with the outlet end; the positioning piece is arranged in the second channel, one end, far away from the piston rod, of the guide column is fixedly connected with the positioning piece, and the positioning piece is used for fixing the position of the guide column in the second channel.

Further, the inner diameter of the inlet end of the second passage gradually increases toward the fluid flow direction, the inner diameter of the outlet end of the second passage gradually decreases toward the fluid flow direction, and the inner diameters of the inlet end and the outlet end are both smaller than the inner diameter of the middle portion of the second passage.

Further, the filter member includes: filtering with a screen; the fixing frame is annularly arranged on the periphery of the filter screen and fixedly connected with the inner wall of the first channel.

According to another aspect of the present invention, there is provided a combination valve, comprising: a pilot valve; the pilot valve is communicated with the inside of the main valve through a capillary tube, an inlet connecting pipe and an outlet connecting pipe are arranged on the main valve, the inlet connecting pipe is positioned on one side of the main valve, and the outlet connecting pipe is positioned on the other side of the main valve; the valve body assembly is connected with the inlet connecting pipe and is the valve body assembly provided by the above.

Use the technical scheme of the utility model, this valve body subassembly includes the casing, filters piece and case subassembly, and wherein, the case subassembly sets up in the low reaches of filtering the piece. Through setting up filtering piece, can filter the fluid in the casing, avoid too much impurity flow direction case subassembly and cause the passageway to block up, guaranteed the normal use of valve body, prolonged the life of case subassembly.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a valve body assembly according to an embodiment of the present invention;

FIG. 2 shows a schematic structural view of the valve spool assembly of FIG. 1;

FIG. 3 shows a schematic view of the guide post of FIG. 1;

FIG. 4 is a schematic view of the positioning member of FIG. 1;

fig. 5 is a schematic structural diagram illustrating a valve body assembly in an open state according to a second embodiment of the present invention;

fig. 6 shows a schematic structural diagram of a valve body assembly in a blocking state according to a second embodiment of the present invention;

fig. 7 shows a schematic structural diagram of a combination valve provided by the third embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a housing; 11. a filter tube; 12. a valve tube; 13. a valve cover;

20. a filter member; 21. filtering with a screen; 22. a fixed mount;

30. a valve core assembly; 31. a piston rod; 311. a guide hole; 32. a second seal member; 33. a gasket; 34. a guide post; 341. a balance hole; 35. a positioning member;

40. a first seal member;

50. a main valve; 51. an inlet connection pipe; 52. an outlet connection pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the embodiment of the present invention provides a valve body assembly, which includes: a housing 10, a filter 20, and a cartridge assembly 30. Wherein the housing 10 includes a first passage and a second passage communicating with each other, and an inner diameter of a middle portion of the first passage is smaller than an inner diameter of a middle portion of the second passage. A filter element 20 is disposed in the first passage, the filter element 20 being for filtering a fluid. The valve core assembly 30 is movably disposed in the second channel, the valve core assembly 30 is located downstream of the filter 20 in the fluid flow direction, and the valve core assembly 30 has a blocking position for blocking the second channel and an open position. The filter 20 is disposed upstream of the valve core assembly 30, so that the filter 20 can be used to filter the fluid flowing to the valve core assembly 30, thereby preventing impurities from blocking the valve core assembly 30 and ensuring the normal operation of the valve core assembly 30. The inner diameter of the middle part of the first channel is set to be smaller than the inner diameter of the middle part of the second channel, so that the occupied space of the valve core assembly 30 in the second channel can be compensated, the resistance of the fluid caused by the valve core assembly 30 is reduced, and the normal flow of the fluid in the shell 10 is ensured.

With the present embodiment, a valve body assembly is provided, which comprises a housing 10, a filter element 20, and a valve core assembly 30, wherein the valve core assembly 30 is disposed downstream of the filter element 20. Through setting up and filtering piece 20, can filter the fluid in the casing 10, avoid too much impurity flow to case subassembly 30 and cause the passageway to block up, guaranteed the normal use of valve body, prolonged the life of case subassembly. The device is simple in structure, and integrates the filtering function and the one-way function together to form a multifunctional valve body structure.

The housing 10 may be a separate structure or an integrated structure. In the present embodiment, the housing 10 includes: a filter tube 11 and a valve tube 12. Wherein the filter tube 11 has a first passage and the filter element 20 is arranged in the filter tube 11. The valve pipe 12 has a second passage, the filter pipe 11 is connected with the valve pipe 12, and the valve core assembly 30 is movably arranged in the valve pipe 12. With the above structure, it is possible to facilitate the installation of the filter 20 and the cartridge assembly 30.

Specifically, the housing 10 further includes a valve cover 13, the valve cover 13 is disposed between the filter pipe 11 and the valve pipe 12, one end of the valve cover 13 is connected to the filter pipe 11, the other end of the valve cover 13 is connected to the valve pipe 12, and the filter pipe 11 is communicated with the valve pipe 12 through the valve cover 13. Wherein, the valve cover 13 can be welded with the filter pipe 11 and the valve pipe 12, and can also be riveted. The installation of the valve core assembly 30 within the valve tube 12 is further facilitated by the provision of the valve cover 13, and provides a connection structure for the filter tube 11 and the valve tube 12.

As shown in fig. 2, the second passage has an inlet end and an outlet end disposed opposite one another, and the valve core assembly includes: a piston rod 31, a second seal 32 and a gasket 33. Wherein a piston rod 31 is movably arranged in the second channel, the inlet end being blocked by the piston rod 31. The second sealing member 32 is disposed at an end of the piston rod 31 near the inlet end, and the sealing performance of the piston rod 31 against the inlet end can be improved by disposing the second sealing member 32. A washer 33 is provided on the piston rod 31, the washer 33 being used to fix the position of the second seal 32 on the piston rod 31.

Specifically, the end of the piston rod 31 close to the inlet end is provided with a connecting convex portion, the second sealing element 32 and the gasket 33 are both sleeved on the connecting convex portion, and the gasket 33 is located on one side of the second sealing element 32 close to the inlet end. By providing the coupling protrusion, it is possible to provide a coupling structure for the second seal 32 and the gasket 33, facilitating the disposition of the second seal 32 at the end of the piston rod 31.

As shown in fig. 2 and 3, the piston rod 31 is provided with a guide hole 311, the valve core assembly further includes a guide post 34, the guide post 34 is fixedly disposed in the second channel and located at the downstream of the piston rod 31, one end of the guide post 34 is inserted into the guide hole 311, the guide post 34 is used for guiding the piston rod 31, the guide post 34 is provided with a balance hole 341, one end of the balance hole 341 is communicated with the guide hole 311, and the other end of the balance hole 341 is communicated with the outlet end.

With the above structure, the piston rod 31 can be guided by the guide post 34, so that the piston rod 31 can move smoothly in the second passage; by utilizing the balance hole 341 on the guide post 34, the guide hole 311 can be communicated with the outlet end, the outlet end is a low-pressure side, and further the interior of the guide hole 311 can be low-pressure, so that the resistance to the piston rod 31 can be reduced, the piston rod 31 can move between the inlet end and the outlet end conveniently, and the normal operation of the valve body is ensured.

The valve body assembly further comprises a positioning member 35, the positioning member 35 is disposed in the cavity, one end of the guide post 34, which is far away from the piston rod 31, is fixedly connected with the positioning member 35, and the positioning member 35 is used for fixing the position of the guide post 34 in the second passage. The guide post 34 may be secured within the second channel by the provision of a locating member 35.

As shown in fig. 4, the positioning member 35 includes: a positioning plate and a plurality of extending ends. The middle part of the positioning plate is provided with a connecting hole, and the end part of the guide post 34 is arranged in the connecting hole in a penetrating way. The plurality of extension ends are annularly arranged at intervals on the periphery of the positioning plate, and the positioning plate is connected with the inner wall of the second channel through the plurality of extension ends. Specifically, the guide posts 34 and the positioning plate may be riveted or welded. The extended ends may be fixedly connected to the housing 10 by means of a pressing roller, or may be connected by means of welding or fastening members. Through the structure, the positioning piece 35 can be ensured to fix the guide column 34, a larger flow area can be provided for fluid flow, and the resistance of the positioning piece 35 to the fluid is reduced.

In this embodiment, the inner diameter of the inlet end of the second passage gradually increases toward the fluid flow direction, the inner diameter of the outlet end of the second passage gradually decreases toward the fluid flow direction, and the inner diameters of the inlet end and the outlet end are both smaller than the inner diameter of the middle portion of the second passage. Specifically, the two ends of the second channel are both arranged to be in a horn mouth structure so as to buffer and guide the fluid. The second channel is set to be a structure with two small ends and a large middle part, so that resistance to fluid formation due to the fact that the valve core assembly is arranged in the middle of the second channel can be reduced, and fluid can smoothly flow in the valve body.

Wherein the filter member 20 includes: a filter screen 21 and a fixing frame 22. Wherein, the fixing frame 22 is annularly arranged on the periphery of the filter screen 21, and the fixing frame 22 is fixedly connected with the inner wall of the first channel. By arranging the fixing frame 22, the filter screen 21 can be conveniently fixed in the first channel, and the fixing frame 22 can be fixed in the first channel in a welding, riveting or pressing mode.

As shown in fig. 5 and 6, a second embodiment of the present application provides a valve body assembly, and the second embodiment differs from the first embodiment in that in the present embodiment, the housing 10 is an integrally formed structure, and by the above structure, the installation steps of the device can be simplified, and the installation efficiency can be improved.

Wherein, in the present embodiment, the valve body assembly further comprises a first seal 40, the first seal 40 is disposed upstream of the valve core assembly 30, and the valve core assembly 30 cooperates with the first seal 40 to block the second channel. By providing the first seal 40, the sealing performance of the valve core assembly 30 for blocking the second channel can be further improved.

As shown in fig. 7, a third embodiment of the present application provides a combination valve, including: pilot valve, main valve 50, and valve body assembly. Wherein, the pilot valve is communicated with the inside of the main valve 50 through a capillary, an inlet connecting pipe 51 and an outlet connecting pipe 52 are installed on the main valve 50, the inlet connecting pipe 51 is positioned at one side of the main valve 50, and the outlet connecting pipe 52 is positioned at the other side of the main valve 50. The valve body assembly is connected with the inlet connecting pipe 51, and the valve body assembly is provided in the above embodiment.

Through set up filter in the device, can filter the fluid in the casing, avoid too much impurity flow to case subassembly and cause the passageway to block up, guaranteed the normal use of valve body, prolonged the life of case subassembly. The valve body assembly is arranged on the combination valve, so that the functions of filtering and one-way can be realized, and the functions of the combination valve are enriched.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve body assembly, comprising:

a housing (10), the housing (10) including a first passage and a second passage communicating with each other, an inner diameter of a middle portion of the first passage being smaller than an inner diameter of a middle portion of the second passage;

a filter element (20) disposed within the first channel, the filter element (20) for filtering a fluid;

a valve core assembly (30) movably disposed in the second channel, the valve core assembly (30) being located downstream of the filter element (20) in a fluid flow direction, the valve core assembly (30) having a blocking position blocking the second channel and an open position.

2. A valve body assembly according to claim 1, wherein the housing (10) comprises:

a filter tube (11), the filter tube (11) having the first passage, the filter element (20) being disposed within the filter tube (11);

a valve tube (12), the valve tube (12) having the second channel, the filter tube (11) being connected to the valve tube (12), the valve core assembly (30) being movably disposed within the valve tube (12).

3. A valve body assembly according to claim 2, wherein the housing (10) further comprises:

valve gap (13), valve gap (13) set up filter tube (11) with between valve pipe (12), the one end of valve gap (13) with filter tube (11) are connected, the other end of valve gap (13) with valve pipe (12) are connected, filter tube (11) pass through valve gap (13) with valve pipe (12) intercommunication.

4. A valve body assembly according to claim 1, wherein the housing (10) is of unitary construction.

5. A valve body assembly according to claim 1, further comprising a first seal (40), the first seal (40) being disposed upstream of the spool assembly (30), the spool assembly (30) cooperating with the first seal (40) to block the second passage.

6. The valve body assembly of claim 1, wherein the second passageway has an inlet end and an outlet end disposed in opposition, the valve core assembly comprising:

a piston rod (31) movably arranged in the second channel;

a second seal (32) disposed at an end of the piston rod (31) proximate the inlet end;

a washer (33) provided on the piston rod (31), the washer (33) for fixing the position of the second seal (32) on the piston rod (31).

7. A valve body assembly according to claim 6, wherein the piston rod (31) is provided with a pilot bore (311), the valve core assembly further comprising:

the guide post (34) is fixedly arranged in the second channel and is positioned at the downstream of the piston rod (31), one end of the guide post (34) penetrates through the guide hole (311), the guide post (34) is used for guiding the piston rod (31), a balance hole (341) is formed in the guide post (34), one end of the balance hole (341) is communicated with the guide hole (311), and the other end of the balance hole (341) is communicated with the outlet end;

the positioning piece (35) is arranged in the second channel, one end, far away from the piston rod (31), of the guide column (34) is fixedly connected with the positioning piece (35), and the positioning piece (35) is used for fixing the position of the guide column (34) in the second channel.

8. The valve body assembly of claim 1, wherein the inlet end of the second passageway has an inner diameter that increases gradually toward the direction of fluid flow, the outlet end of the second passageway has an inner diameter that decreases gradually toward the direction of fluid flow, and the inner diameters of the inlet end and the outlet end are each smaller than the inner diameter of the middle portion of the second passageway.

9. A valve body assembly according to claim 1, wherein the filter element (20) comprises:

a strainer (21);

the fixing frame (22) is annularly arranged on the periphery of the filter screen (21), and the fixing frame (22) is fixedly connected with the inner wall of the first channel.

10. A combination valve, comprising:

a pilot valve;

the pilot valve is communicated with the inside of the main valve (50) through a capillary tube, an inlet connecting pipe (51) and an outlet connecting pipe (52) are installed on the main valve (50), the inlet connecting pipe (51) is positioned on one side of the main valve (50), and the outlet connecting pipe (52) is positioned on the other side of the main valve (50);

a valve body assembly connected to the inlet connection tube (51), the valve body assembly being as claimed in any one of claims 1 to 9.