CN213420014U

CN213420014U - One-way valve

Info

Publication number: CN213420014U
Application number: CN202022365716.5U
Authority: CN
Inventors: 熊匀均; 俞舟
Original assignee: Dunan Environment Technology Co Ltd
Current assignee: Dunan Environment Technology Co Ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-06-11
Anticipated expiration: 2030-10-21

Abstract

The utility model provides a check valve, this check valve includes: a housing having a mounting hole; the valve seat core is arranged in the mounting hole in a penetrating mode and provided with a press mounting section and a guide section, the outer wall of the press mounting section is in interference fit with the inner wall of the mounting hole, the outer wall of the guide section is in clearance fit with the inner wall of the mounting hole, and a gap between the outer wall of the guide section and the inner wall of the mounting hole is filled with solder. Through the technical scheme that this application provided, can solve the machining precision that is difficult to guarantee the valve seat core among the prior art, and then influence the problem of the sealing performance of valve seat core.

Description

One-way valve

Technical Field

The utility model relates to a check valve technical field particularly, relates to a check valve.

Background

Currently, a check valve includes a housing and a valve core assembly, wherein a valve seat core is disposed in the housing, a valve port is disposed on the valve seat core, and the valve core assembly is movably disposed in the housing to open or close the valve port.

However, in the prior art, the valve seat core and the housing are integrally formed, the machining difficulty of the valve seat core is high, the machining precision of the valve seat core is difficult to ensure, the sealing performance of the valve seat core is affected, and the risk of internal leakage exists.

Therefore, the prior art has the problem that the machining precision of the valve seat core is difficult to ensure, and the sealing performance of the valve seat core is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a check valve to solve the machining precision that is difficult to guarantee the valve seat core among the prior art, and then influence the sealing performance's of valve seat core problem.

The utility model provides a check valve, check valve includes: a housing having a mounting hole; the valve seat core is arranged in the mounting hole in a penetrating mode and provided with a press mounting section and a guide section, the outer wall of the press mounting section is in interference fit with the inner wall of the mounting hole, the outer wall of the guide section is in clearance fit with the inner wall of the mounting hole, and a gap between the outer wall of the guide section and the inner wall of the mounting hole is filled with solder.

Use the technical scheme of the utility model, through with valve seat core and casing components of a whole that can function independently setting, can process alone the valve seat core, so can guarantee the machining precision of valve seat core, and then guarantee the sealing performance of valve seat core. When the casing is packed into with the disk seat core to needs, at first wear to establish the mounting hole on the casing with the disk seat core in, the guide section can play the guide effect to the disk seat core at the in-process of wearing to establish, the outer wall that makes the pressure equipment section and the inner wall interference fit of mounting hole, so can guarantee the axiality of disk seat core and casing, the outer wall that makes the guide section and the inner wall clearance fit of mounting hole, utilize the clearance between the outer wall of guide section and the inner wall of mounting hole to fill the clearance as the solder, be convenient for the solder to fill between guide section and the mounting hole, and then realize the firm connection of disk seat core and casing.

Furthermore, the check valve further comprises a limiting structure, and the limiting structure is arranged between the valve seat core and the shell to limit the axial position of the valve seat core relative to the shell and avoid excessive press fitting of the valve seat core into the mounting hole.

Further, the external diameter of pressure equipment section is greater than the external diameter of direction section, and the mounting hole includes interconnect's first hole section and second hole section, and the internal diameter of first hole section is greater than the internal diameter of second hole section, and pressure equipment section interference is worn to establish in first hole section, and the outer wall of direction section and the inner wall clearance fit of second hole section, the diapire of first hole section and the end wall looks butt of the orientation direction section of pressure equipment section are in order to form limit structure. By adopting the structure, when the valve seat core is pressed into the mounting hole, the valve seat core can be firstly matched with the second hole section for assembly and guide, when the valve seat core moves to the end wall of the pressing section facing to the guide section and is abutted against the bottom wall of the first hole section, the valve seat core can be positioned at the current position, the valve seat core is assembled in place at the moment, and finally the valve seat core and the shell are welded and fixed. When welding, the gap between the outer wall of the guide section and the inner wall of the second hole section is filled with solder, so that the solder can be conveniently filled between the guide section and the mounting hole, and the valve seat core and the shell can be firmly connected.

Furthermore, the check valve also comprises a valve core assembly, the valve core assembly is movably arranged in the shell, a valve port and a sealing part are arranged on the valve seat core, the valve core assembly has an open valve position and a closed valve position relative to the valve port, and when the valve core assembly is located in the closed valve position, the valve core assembly is in sealing connection with the sealing part. The sealing part is arranged on the valve seat core, so that the sealing performance between the valve seat core and the valve core assembly can be ensured.

Further, the sealing part is an annular boss, and the annular boss is arranged on the periphery of the valve port along the circumferential direction. When the valve core assembly is located at the closed valve position, the valve core assembly can be contacted with the valve seat core through the annular boss, and the valve core assembly is conveniently in sealing connection with the valve seat core. And because the valve seat core and the shell are arranged in a split manner, the valve seat core can be independently processed, so that the processing precision of the annular boss on the valve seat core can be ensured, and the sealing performance is further ensured.

Further, the end wall of the annular boss facing the valve core assembly is a curved surface, so that when the valve core assembly moves to the closed valve position, the valve core assembly can be firstly contacted with the curved surface of the annular boss, and the structure adopting the curved surface is compared with a plane, so that the sealing effect is convenient to ensure.

Further, the internal diameter of valve port is crescent in the direction of keeping away from the casing, so can reduce the impact force of the fluid that gets into by the valve port to the case subassembly, the difficult quilt of case subassembly is worn and torn, and then guarantees the life of case subassembly.

Furthermore, the check valve also comprises a connecting pipe, the valve seat core is provided with an installation section penetrating through the installation hole, and the connecting pipe is sleeved on the installation section. By adopting the structure, the butt joint pipe is convenient to connect, and the assembly efficiency can be improved.

Furthermore, the valve seat core, the connecting pipe and the shell are connected in a welding mode, so that the three components can be fixed simultaneously, the assembling steps can be simplified, and the assembling is facilitated.

Furthermore, the shell is formed by stretching a sheet metal part, and the shell has the advantages of high processing efficiency and low processing cost.

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 cross-sectional view of a check valve provided by an embodiment of the present invention;

FIG. 2 shows a partial enlarged view at A in FIG. 1;

FIG. 3 shows a schematic view of the valve seat insert of FIG. 1;

figure 4 shows a further cross-sectional view of a one-way valve provided by an embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a check valve provided by an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a housing; 11. mounting holes; 111. a first bore section; 112. a second bore section; 20. a valve seat core; 21. a press mounting section; 22. a guide section; 23. a valve port; 24. a sealing part; 25. an installation section; 30. a limiting structure; 40. a valve core assembly; 50. and (6) taking over.

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 to 5, the embodiment of the present invention provides a check valve, which includes a housing 10 and a valve seat core 20, wherein the housing 10 has a mounting hole 11, and the valve seat core 20 is inserted into the mounting hole 11. Specifically, the valve seat core 20 has a press-fitting section 21 and a guide section 22, an outer wall of the press-fitting section 21 is in interference fit with an inner wall of the mounting hole 11, an outer wall of the guide section 22 is in clearance fit with the inner wall of the mounting hole 11, and a gap between the outer wall of the guide section 22 and the inner wall of the mounting hole 11 is a solder filling gap.

By applying the check valve provided by the embodiment, the valve seat core 20 and the shell 10 are separately arranged, so that the valve seat core 20 can be independently processed, the processing precision of the valve seat core 20 can be ensured, and the sealing performance of the valve seat core 20 can be further ensured. When the valve seat core 20 needs to be installed in the housing 10, the valve seat core 20 is firstly inserted into the installation hole 11 of the housing 10, the guide section 22 can play a role in guiding the valve seat core 20 in the insertion process, so that the outer wall of the press-fitting section 21 is in interference fit with the inner wall of the installation hole 11, the coaxiality of the valve seat core 20 and the housing 10 can be ensured, the outer wall of the guide section 22 is in clearance fit with the inner wall of the installation hole 11, and the gap between the outer wall of the guide section 22 and the inner wall of the installation hole 11 is used as a solder filling gap, so that the solder is conveniently filled between the guide section 22 and the installation hole 11, and further the valve seat core 20 and the housing 10 are firmly connected.

Wherein the valve seat core 20 and the mounting hole 11 include a plurality of cooperating structures, such as:

(1) the inner wall of the mounting hole 11 is of a straight structure, the outer diameter of the press-mounting section 21 is larger than that of the guide section 22, the outer wall of the press-mounting section 21 is in interference fit with the inner wall of the mounting hole 11, and the outer wall of the guide section 22 is in clearance fit with the inner wall of the mounting hole 11;

(2) the inner wall of the mounting hole 11 is a stepped hole, the outer diameter of the press-fitting section 21 is the same as the outer diameter of the guide section 22, the outer wall of the press-fitting section 21 is guaranteed to be in interference fit with the inner wall of the mounting hole 11 by adjusting the size of the stepped hole, and the outer wall of the guide section 22 is in clearance fit with the inner wall of the mounting hole 11;

(3) the inner wall of mounting hole 11 has first stair structure, and the pressure equipment section 21 forms the second stair structure with the junction of direction section 22, through the size of adjusting first stair structure and second stair structure, guarantees the outer wall of pressure equipment section 21 and the inner wall interference fit of mounting hole 11, the outer wall of direction section 22 and the inner wall clearance fit of mounting hole 11.

As shown in fig. 1, in the present embodiment, the check valve further includes a limiting structure 30, the limiting structure 30 is disposed between the seat core 20 and the housing 10, and the limiting structure 30 is used to limit the axial position of the seat core 20 relative to the housing 10, so as to avoid the seat core 20 from being excessively press-fitted into the mounting hole 11.

Specifically, in this embodiment, the outer diameter of the press-fitting section 21 is greater than the outer diameter of the guide section 22, the mounting hole 11 includes a first hole section 111 and a second hole section 112 that are connected to each other, the inner diameter of the first hole section 111 is greater than the inner diameter of the second hole section 112, the press-fitting section 21 is inserted into the first hole section 111 in an interference manner, the outer wall of the guide section 22 is in clearance fit with the inner wall of the second hole section 112, the bottom wall of the first hole section 111 abuts against the end wall of the press-fitting section 21 facing the guide section 22 to form the limiting structure 30, so that the perpendicularity of the seat core 20 and the housing 10 can be ensured.

By adopting the structure, when the valve seat core 20 is pressed into the mounting hole 11, firstly, the guide section 22 and the second hole section 112 can be matched for assembly and guide, when the valve seat core 20 moves to the end wall of the press-fitting section 21 facing the guide section 22 and is abutted against the bottom wall of the first hole section 111, the valve seat core 20 can be positioned at the current position, at the moment, the valve seat core 20 is assembled in place, and finally, the valve seat core 20 and the shell 10 are welded and fixed. During welding, the gap between the outer wall of the guide section 22 and the inner wall of the second hole section 112 is a solder filling gap, so that solder can be filled between the guide section 22 and the mounting hole 11, and the valve seat core 20 and the housing 10 can be firmly connected.

As shown in fig. 1 to fig. 3, in the present embodiment, the check valve further includes a valve core assembly 40, the valve core assembly 40 is movably disposed in the housing 10, the valve seat core 20 is disposed with a valve port 23 and a sealing portion 24, the valve core assembly 40 has an open valve position and a closed valve position relative to the valve port 23, and when the valve core assembly 40 is in the closed valve position, the valve core assembly 40 is in sealing connection with the sealing portion 24. By providing the seal portion 24 on the seat core 20, the sealing performance between the seat core 20 and the core assembly 40 can be ensured.

The sealing portion 24 includes a sealing structure formed on the valve seat core 20, and a sealing member such as a sealing ring separately provided.

In the present embodiment, the sealing portion 24 is an annular boss that is provided circumferentially on the outer periphery of the valve port 23. When the valve core assembly 40 is in the closed valve position, the valve core assembly 40 will contact the valve seat core 20 through the annular boss, so as to achieve the sealing connection between the valve core assembly 40 and the valve seat core 20. Moreover, the valve seat core 20 and the shell 10 are arranged separately, so that the valve seat core 20 can be processed separately, the processing precision of the annular boss on the valve seat core 20 can be ensured, and the sealing performance is further ensured.

Specifically, the end wall of the annular boss facing the valve core assembly 40 is a curved surface, so that when the valve core assembly 40 moves to the closed valve position, the valve core assembly 40 will firstly contact with the curved surface of the annular boss, and the sealing effect is conveniently ensured by adopting a structure with the curved surface as compared with a structure with a flat surface.

In the present embodiment, the inner diameter of the valve port 23 gradually increases in a direction away from the housing 10, so that an impact force of a fluid entering from the valve port 23 on the valve core assembly 40 can be reduced, the valve core assembly 40 is not easily worn, and the service life of the valve core assembly 40 is further ensured.

As shown in fig. 1, 4 and 5, in the present embodiment, the check valve further includes a connection tube 50, the valve seat core 20 has a mounting section 25 penetrating through the mounting hole 11, and the connection tube 50 is sleeved on the mounting section 25. By adopting the structure, the connecting pipe 50 can be conveniently connected, and the assembly efficiency can be improved.

Specifically, the valve seat core 20, the adapter tube 50 and the housing 10 are connected by brazing welding, so that the three components can be fixed at the same time, the assembling steps can be simplified, and the assembly is facilitated.

During assembly, the welding ring is sleeved on the connecting pipe 50 and is in contact with the outer wall of the shell 10, when the welding ring is melted, the solder can flow through the gap between the outer wall of the guide section 22 and the inner wall of the mounting hole 11, and the three components can be welded and fixed after the solder is solidified.

In this embodiment, the housing 10 is formed by stretching a sheet metal part, and has the advantages of high processing efficiency and low processing cost.

By the device provided by the embodiment, the valve seat core 20 is independently processed, so that the processing precision of the valve seat core 20 can be ensured, and the internal leakage can be reduced. The press-fitting section 21 is in interference fit with the mounting hole 11, coaxiality of the valve seat core 20 and the shell 10 is guaranteed, and a gap between the outer wall of the guide section 22 and the inner wall of the mounting hole 11 is used as a solder to fill the gap, so that the valve seat core 20 and the shell 10 are firmly connected.

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 one-way valve, comprising:

a housing (10) having a mounting hole (11);

the valve seat core (20) penetrates through the mounting hole (11), the valve seat core (20) is provided with a press mounting section (21) and a guide section (22), the outer wall of the press mounting section (21) is in interference fit with the inner wall of the mounting hole (11), the outer wall of the guide section (22) is in clearance fit with the inner wall of the mounting hole (11), and the gap between the outer wall of the guide section (22) and the inner wall of the mounting hole (11) is filled with solder.

2. The check valve of claim 1, further comprising a limiting structure (30), the limiting structure (30) being disposed between the seat core (20) and the housing (10) to limit an axial position of the seat core (20) relative to the housing (10).

3. The check valve of claim 2, wherein the outer diameter of the press-fitting section (21) is larger than the outer diameter of the guide section (22), the mounting hole (11) comprises a first hole section (111) and a second hole section (112) which are connected with each other, the inner diameter of the first hole section (111) is larger than the inner diameter of the second hole section (112), the press-fitting section (21) is arranged in the first hole section (111) in an interference mode, the outer wall of the guide section (22) is in clearance fit with the inner wall of the second hole section (112), and the bottom wall of the first hole section (111) abuts against the end wall of the press-fitting section (21) facing the guide section (22) to form the limiting structure (30).

4. The check valve of claim 1, further comprising a valve core assembly (40), wherein the valve core assembly (40) is movably disposed in the housing (10), the valve seat core (20) is provided with a valve port (23) and a sealing portion (24), the valve core assembly (40) has an open valve position and a closed valve position relative to the valve port (23), and the valve core assembly (40) is in sealing connection with the sealing portion (24) when the valve core assembly (40) is in the closed valve position.

5. The check valve of claim 4, wherein the sealing portion (24) is an annular boss circumferentially disposed at an outer periphery of the valve port (23).

6. A check valve as claimed in claim 5, wherein an end wall of the annular boss facing the spool assembly (40) is curved.

7. The non-return valve according to claim 4, characterized in that the inner diameter of the valve port (23) becomes gradually larger in a direction away from the housing (10).

8. The check valve of claim 1, further comprising a connecting tube (50), wherein the valve seat core (20) has a mounting section (25) penetrating through the mounting hole (11), and the connecting tube (50) is sleeved on the mounting section (25).

9. Non-return valve according to claim 8, characterized in that the valve seat core (20), the nipple (50) and the housing (10) are welded.

10. A non-return valve according to claim 1, characterised in that the housing (10) is stretch-formed from sheet metal.