WO2023124998A1

WO2023124998A1 - Valve body assembly and stop valve comprising same

Info

Publication number: WO2023124998A1
Application number: PCT/CN2022/138900
Authority: WO
Inventors: 周峰; 楼峰; 陈狄永; 袁兴洋
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2021-12-28
Filing date: 2022-12-14
Publication date: 2023-07-06
Also published as: CN216743053U

Abstract

A valve body assembly (100) and a stop valve comprising same. The valve body assembly (100) comprises a valve body (10) and a valve bonnet (30). One end of the valve body (10) is provided with an opening (11). The valve bonnet (30) covers the opening (11) and is connected to the valve body (10). An outer side wall of the valve body (10) at the opening (11) is provided with threads (20), and the valve bonnet (30) is in threaded connection with the valve body (10) by means of the threads (20), wherein the threads (20) comprise a plurality of thread sections (22), and the plurality of thread sections (22) are arranged at intervals in a circumferential direction of the valve body (10). The stop valve comprises the valve body assembly (100). Therefore, the present application can reduce the workload of fastening or unscrewing, achieve rapid screwed joint or disassembly, improve the working efficiency, and also solve the problem of materials for machining and manufacturing threads, thereby saving on costs.

Description

Valve body assembly and its shut-off valve

related application

This application claims the priority of the Chinese patent application filed on December 28, 2021 with the application number 202123343253.3 and the title of the invention is "Valve Body Assembly and Its Globe Valve", the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the technical field of stop valves, in particular to a valve body assembly and a stop valve thereof.

Background technique

In the related art, the valve body assembly of the shut-off valve is connected with other components through threads, and the threads are continuous and uninterrupted. Wherein, other components include pipe fittings or other structures. In some application scenarios, some thread segments in the thread do not play the role of fastening connection, set continuous and uninterrupted thread, there are some thread segments that do not work, and other parts and valve body components are tightened or loosened during the process , it is necessary to screw in and out of all thread segments in turn, so that some thread segments that do not work will increase the workload of tightening or loosening, resulting in a decrease in work efficiency, and setting continuous and uninterrupted threads requires more materials, raw material costs and Processing costs are higher.

Contents of the invention

A valve body assembly of a cut-off valve provided by the present application includes a valve body and a valve cover, an opening is opened at one end of the valve body, and the valve cover is arranged at the opening and connected with the valve body; The valve body is provided with threads on the outer wall of the opening, and the valve cover is threadedly connected with the valve body through the threads; wherein, the threads include a plurality of thread segments, and the plurality of thread segments are along the Arranged at intervals along the circumference of the valve body.

It can be understood that the thread in the present application includes a plurality of thread segments, and the plurality of thread segments are arranged at intervals along the circumference of the valve body. In this way, only a small number of threaded sections are required to realize the connection between the valve body and the bonnet, eliminating the useless threaded sections, reducing the workload of fastening or loosening, realizing fast screwing or disassembly, and improving work efficiency; and It can also solve the problem of materials used for processing and manufacturing threads and save costs.

In one of the embodiments, multiple thread segments are located on the same helical line.

It can be understood that the arrangement of multiple thread segments on the same helical line is simpler than that on multiple helical lines, which simplifies the processing steps and reduces the difficulty of processing.

In one of the embodiments, the plurality of thread segments are evenly distributed along the circumference of the valve body.

In this way, the circumference of the valve body is evenly provided with threaded sections. When the valve cover is threaded with the valve body, the evenly distributed threaded sections are threadedly connected with the valve cover to ensure that the force between the valve body assembly and the valve cover is balanced and the connection is smooth. Stablize.

In one embodiment, the axis of the valve body is defined as l, the threaded segments are provided in multiple groups, and multiple groups of the threaded segments are arranged at intervals along the direction of the valve body axis l.

It can be understood that multiple sets of thread segments provide multi-layer connection points for the connection of the valve cover and the valve body, so as to improve the strength and stability of the connection.

In one of the embodiments, the threaded segments are set in two groups, and the two groups of threaded segments are respectively the first group of threaded segments and the second group of threaded segments; the first group of threaded segments includes at least the first threaded segment And the second thread segment, the second group of thread segments at least includes a third thread segment and a fourth thread segment; wherein, the first thread segment is arranged correspondingly to the second thread segment, and along the valve body The third thread segment is arranged at intervals along the axis l direction of the valve body; the third thread segment is arranged correspondingly to the fourth thread segment, and is arranged at intervals along the axis direction of the valve body.

Such setting makes the thread segments evenly distributed, which is beneficial to improve the stability of the connection between the bonnet and the valve body, so that only a few thread segments need to be provided to meet the connection strength requirements, thereby saving raw material costs and processing costs.

In one of the embodiments, along the direction of the valve body axis l, the distance between two adjacent groups of thread segments is defined as H ₁ ; the pitch of each group of threads is defined as H ₂ , H ₁ and H ₂ satisfy the following relationship: H ₂ =H ₁ .

In one of the embodiments, the length of the projection of the thread segment along the axis l of the valve body is defined as L ₂ , and the diameters of the opening of the valve body are defined as L ₁ , L ₁ and L ₂ Satisfy the following relationship: L ₂ <L ₁ .

It can be understood that H ₂ =H ₁ , so as to ensure uniform distribution of the threaded segments, so that the distribution of the connection between the valve cover and the valve body is uniform, thereby improving the connection stability and connection strength between the two.

In one embodiment, the thread segment is formed by forging.

It can be understood that the valve body is directly formed into a threaded segment by forging, so that the threaded segment can be formed in only one process without subsequent processing, which obviously simplifies the processing procedure, reduces the processing cost, and improves the efficiency of processing and manufacturing.

In one of the embodiments, the thread segment is formed by machining.

The present application also provides a shut-off valve, including the valve body assembly described in any one of the above.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the present application will be apparent from the description, drawings and claims.

Description of drawings

In order to better describe and illustrate embodiments and/or examples of the inventions disclosed herein, reference may be made to one or more of the accompanying drawings. Additional details or examples used to describe the drawings should not be considered as limitations on the scope of any of the disclosed inventions, the presently described embodiments and/or examples, and the best mode of these inventions currently understood.

Fig. 1 is a schematic structural diagram of a threaded part in the related art.

Fig. 2 is a schematic structural diagram of a valve body assembly provided by an embodiment of the present application.

FIG. 3 is a front view of the valve body assembly of FIG. 1 .

FIG. 4 is a left side view of the valve body assembly of FIG. 2 .

FIG. 5 is a top view of the valve body assembly of FIG. 2 .

Fig. 6 is a structural schematic diagram of the valve body assembly including the valve cover in Fig. 1 .

FIG. 7 is a cross-sectional view of FIG. 5 .

Reference signs: A, threaded part; 100, valve body assembly; 10, valve body; 11, opening; 20, thread; 21, helix; 22, thread segment; 221, first group of thread segment; 222, second Group thread segment; 22a, first thread segment; 22b, second thread segment; 22c, third thread segment; 22d, fourth thread segment; 30, valve cover.

Detailed ways

In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

It should be noted that when a component is referred to as being “fixed on” or “set on” another component, it may be directly on the other component or there may also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for the purpose of illustration only and do not represent the only implementation Way.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this application, unless otherwise clearly specified and limited, a first feature is "on" or "under" a second feature, which means that the first feature is directly in contact with the second feature, or that the first feature and the second feature are indirectly in contact with each other. contact through an intermediary. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or it just means that the first feature is higher in level than the second feature. "Below", "beneath" and "under" the first feature may mean that the first feature is directly below or obliquely below the second feature, or it just means that the level of the first feature is smaller than that of the second feature.

Unless otherwise defined, all technical and scientific terms used in the description of the present application have the same meaning as commonly understood by those skilled in the technical field of the present application. The terms used in the description of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The term "and/or" used in the specification of the present application includes any and all combinations of one or more related listed items.

Please refer to FIG. 1 , in the related art, the valve body assembly of the shut-off valve is connected with other components through threaded part A, and the thread is continuous and uninterrupted. Among them, other components include pipe fittings or valve covers and the like. In some application scenarios, some thread segments in the threaded part A do not play the role of fastening connection. For example, in the application scenarios where other parts and valve body components only need to be connected without ensuring the sealing, continuous and uninterrupted threads are set. There are some ineffective thread segments, and during the tightening or loosening process of other parts and valve body components, it is necessary to screw in and out of all the thread segments in turn, so that the ineffective part of the thread segments increases the work of tightening or loosening Amount, resulting in reduced work efficiency, and setting continuous and uninterrupted screw thread requires more materials, higher raw material costs and processing costs.

Therefore, referring to FIG. 2 to FIG. 7 , an embodiment of the present application provides a valve body assembly 100 of a shut-off valve, the valve body assembly 100 includes a valve body 10 and a valve cover 30 , and an opening 11 is opened at one end of the valve body 10 , the bonnet 30 is located at the opening 11 and is connected to the valve body 10; the valve body 10 is provided with threads 20 on the outer wall of the opening 11, and the bonnet 30 is threadedly connected with the valve body 10 through the threads 20; wherein, the thread 20 includes a plurality of thread segments 22 , and the plurality of thread segments 22 are arranged at intervals along the circumference of the valve body 10 .

It can be understood that, compared with the related art (FIG. 1), the thread 20 of the present application includes a plurality of thread segments 22, and the plurality of thread segments 22 are arranged at intervals along the circumference of the valve body 10. In this way, only a small amount of The threaded section 22 can realize the connection between the valve body 10 and the bonnet 30, save the non-functional threaded part, reduce the workload of fastening or loosening, realize fast screwing or disassembly, improve work efficiency, and save The material used for making the thread 20 saves cost.

Referring to Fig. 2 and Fig. 5, it can be understood that a thread 20 corresponds to a helix 21, and in this embodiment, a thread 20 is provided, and a thread 20 includes a plurality of thread segments 22, and the plurality of thread segments 22 are located at the same On one helical line 21, a plurality of threaded segments 22 are provided to increase the stability of the fastened connection. The number of threaded segments 22 provided on each helical line 21 is not limited to that shown in the figure, for example, it can be two or three. Of course, in other embodiments, the number of threads 20 is not limited to the above. For example, if two threads 20 are provided, then multiple thread segments 22 are respectively distributed on the two helical lines 21 .

A plurality of threaded segments 22 are evenly distributed along the circumferential direction of the valve body 10. In this way, the circumferential direction of the valve body 10 is evenly provided with threaded segments 22. 22 is threadedly connected with the valve cover 30 to ensure that the force between the valve body assembly 100 and the valve cover 30 is balanced and the connection is stable. Specifically, in this embodiment, referring to Fig. 2 to Fig. 5, the axis of the valve body is defined as l, and four thread segments 22 are arranged on a helical line 21, wherein every two thread segments 22 are aligned with the axis l of the valve body 10. The center line is correspondingly distributed on both sides of the valve body 10, and the two threaded segments 22 on the same side are arranged axially along the valve body 10, so that the connection area between the valve cover 30 and the valve body 10 can be increased when screwed. , so as to improve the strength of the connection between the two and ensure the stability of the connection. Of course, in other embodiments, only two threaded sections 22 may be provided, and the two threaded sections 22 are correspondingly distributed on both sides of the valve body 10 with the axis 1 of the valve body 10 as the centerline. Alternatively, three thread segments 22 are provided, and the three thread segments 22 are arranged along the spiral line 21 and along the circumferential direction of the valve body 10 .

The threaded segments 22 are arranged in multiple groups, and the multiple sets of threaded segments 22 are arranged at intervals along the axis l direction of the valve body 10, so that the multiple groups of threaded segments 22 provide multi-layered connection points for the connection between the valve cover 30 and the valve body 10 to improve the connection. strength and stability.

For example, in this embodiment, referring to Fig. 2 to Fig. 5, the threaded segments 22 are arranged in two groups, and the two groups of threaded segments 22 are respectively the first group of threaded segments 221 and the second group of threaded segments 222; the first group of threaded segments 221 includes at least a first thread segment 22a and a second thread segment 22b, and the second group of thread segments 222 includes at least a third thread segment 22c and a fourth thread segment 22d; wherein, the first thread segment 22a and the second thread segment 22b are set correspondingly On both sides of the valve body 10, and arranged at intervals along the axis l direction of the valve body 10; the third thread segment 22c and the fourth thread segment 22d are correspondingly arranged on both sides of the valve body 10, and along the axis of the valve body 10 1 direction is arranged at intervals, so that the threaded sections 22 are evenly distributed, which is conducive to improving the stability of the connection between the bonnet 30 and the valve body 10, so that only a small number of threaded sections 22 can meet the requirements of the connection strength, thereby Save raw material cost and processing cost. Of course, in other embodiments, multiple sets of threaded segments 22 may also be provided, and the arrangement of each threaded segment 22 in the multiple sets of threaded segments 22 is not limited to the above description.

Please continue to refer to FIG. 4 , along the direction of the axis l of the valve body 10, the distance between two adjacent sets of threaded segments 22 is set to H ₁ . The distance between two thread segments 22 is defined as H ₁ , the pitch of each set of threads 20 is defined as H ₂ , and H ₁ and H ₂ satisfy the following relationship: H ₂ =H ₁ . In this way, it is ensured that the threaded segments 22 are evenly distributed, so that the connection between the valve cover 30 and the valve body 10 is evenly distributed, thereby improving the connection stability and connection strength between the two. Specifically, in this embodiment, as shown in FIG. 4, the distance between the adjacent first thread segment 22a and the third thread segment 22c is defined as H ₁ , and the adjacent second thread segment 22b and the fourth thread segment The distance between the thread segments 22d is defined as H ₁ , the first thread segment 22a, the second thread segment 22b, the third thread segment 22c and the fourth thread segment 22d belong to the same thread 20, and the pitch of the thread 20 is defined as H ₂ , wherein H ₂ =H ₁ . In other embodiments, the distance between two adjacent groups of thread segments 22 may not be equal to the pitch of the thread 20 .

In one of the embodiments, referring to FIG. 3 , the length of the projection of the threaded segment 22 along the axis l of the valve body 10 is defined as L ₂ , and the diameter at the opening 11 of the valve body 10 is defined as L ₁ , L ₁ and L ₂ Satisfy the following relationship: L ₂ <L ₁ . In this way, waste caused by too long threaded section 22 may be avoided. When the threaded section 22 is too long, some parts may not function as a connection, and it will also increase the workload of screwing and increase the manufacturing cost.

In one of the embodiments, the threaded section 22 is formed by forging, and the forging and forming includes forging and stamping. The valve body 10 directly forms the threaded section 22 by forging, so that the threaded section 22 can be formed by only one process without subsequent processing. , which obviously simplifies the processing procedure, reduces the processing cost, and also improves the efficiency of processing and manufacturing.

In other embodiments, other processing methods can also be used to process the threaded segment 22 . The threaded section 22 is formed, for example, by machining, in particular turning.

The present application also provides a cut-off valve, which includes the valve body assembly 100 of any one of the above. Connecting the assembly process through the threaded section 22 saves time and effort, which is beneficial to improve the assembly or disassembly progress of the stop valve and the valve cover 30 , thereby improving work efficiency and reducing labor costs.

Compared with related technologies, the valve body assembly 100 is provided with threads 20 on the outer wall of the valve body 10 to realize the connection between the valve body 10 and the valve cover 30. It is worth emphasizing that in some fastening scenarios, the part of the threads 20 The threaded section 22 is usually not used for fastening connections. Therefore, the thread 20 of the present application includes a plurality of thread segments 22, and the plurality of thread segments 22 are arranged at intervals along the circumference of the valve body 10. In this way, only a small number of thread segments 22 are required to realize the valve body 10 and the valve cover 30. The connection can save the non-functioning thread segment 22, reduce the workload of fastening or loosening, realize fast screwing or disassembly, and improve work efficiency; moreover, it can also solve the material used for processing and manufacturing the thread 20, and save costs.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of this application should be based on the appended claims.

Claims

A valve body assembly of a stop valve, the valve body assembly includes a valve body and a valve cover, one end of the valve body is provided with an opening, and the valve cover is arranged at the opening and connected to the valve body;

It is characterized in that, the valve body is provided with threads on the outer wall of the opening, and the valve cover is threadedly connected with the valve body through the threads; wherein, the threads include a helix and a plurality of thread segments, And a plurality of the thread segments are located on the helix and arranged at intervals along the circumference of the valve body.
The valve body assembly of a shut-off valve according to claim 1, wherein a plurality of said thread segments are evenly distributed along the circumferential direction of said valve body.
The valve body assembly of the globe valve according to claim 1, wherein the axis of the valve body is defined as l, the threaded segments are provided in multiple groups, and multiple groups of the threaded segments are along the axis of the valve body l direction interval setting.
The valve body assembly of the shut-off valve according to claim 3, wherein the threaded sections are arranged in two groups, and the two groups of threaded sections are respectively a first group of threaded sections and a second group of threaded sections; the first The set of thread segments includes at least a first thread segment and a second thread segment, and the second set of thread segments includes at least a third thread segment and a fourth thread segment;

Wherein, the first thread segment is arranged correspondingly to the second thread segment, and is arranged at intervals along the axial direction of the valve body; the third thread segment is arranged correspondingly to the fourth thread segment, and is arranged along the The axial direction of the valve body is arranged at intervals.
The valve body assembly of the globe valve according to claim 3, wherein, along the direction of the valve body axis l, the distance between two adjacent groups of thread segments is defined as H 1 ; The pitch is defined as H2 , the H1 and the H2 satisfy the following relationship:

H 2 =H 1 .
The valve body assembly of the globe valve according to claim 1, wherein the length of the projection of the threaded section along the axis l direction of the valve body (10) is defined as L 2 , and the opening of the valve body The diameter at is defined as L 1 , and the L 1 and the L 2 satisfy the following relationship:

L 2 <L 1 .
The valve body assembly of a shut-off valve according to claim 1, wherein the threaded section is formed by forging.
The valve body assembly of a shut-off valve according to claim 1, wherein the threaded section is formed by machining.
A cut-off valve, comprising a valve body assembly, characterized in that,

The valve body assembly includes a valve body and a valve cover, an opening is opened at one end of the valve body, and the valve cover is arranged at the opening and connected with the valve body;

The valve body is provided with threads on the outer wall of the opening, and the valve cover is threadedly connected with the valve body through the threads; wherein, the threads include a plurality of thread segments, and the plurality of thread segments arranged at intervals along the circumference of the valve body.