Valve body assembly and stop valve thereof

Abstract

A valve body assembly (100) and a stop valve thereof, the valve body assembly (100) includes a valve body (10) and a valve cover (30), an opening (11) is drilled at one end of the valve body (10), the valve cover (30) is placed over the opening (11) and connected to the valve body (10), a thread (20) is provided on an outer wall of the opening (11) of the valve body (10), and the valve cover (30) is screwed to the valve body (10) by the thread (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 circumferential direction of the valve body (10). By including the above valve body assembly (100), the stop valve can reduce the amount of work required for fastening or loosening, realize quick screwing or removal, improve work efficiency, solve the material problem for processing and manufacturing the thread, and save costs.

Description

[Technical field]

[0001] Related Applications This application claims priority to a Chinese patent application bearing application number 202123343253.3, filed on December 28, 2021, and titled "Valve body assembly and stop valve therefor," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of stop valves, and in particular to a valve body assembly and the stop valve thereof. [Background technology]

[0003] In the related art, the valve body assembly of the stop valve and other components are connected by a screw, and the screw is continuous and uninterrupted. Here, the other components include joints or other structures. In some application scenarios, some thread segments in the screw do not play the role of fastening connection, and if a continuous thread is provided, there will be some thread segments that do not play a role, and in the process of tightening or loosening the other components to the valve body assembly, all the thread segments must spiral in and out in order, so the tightening or loosening work amount is increased by the part of the thread segments that do not play a role, and the work efficiency is reduced, and if a continuous thread is provided, more materials are required, and the raw material cost and processing cost are higher. Summary of the Invention

[0004] The valve body assembly of the stop valve provided in the present application includes a valve body and a valve cover, an opening is drilled at one end of the valve body, the valve cover is placed over the opening and connected to the valve body, a thread is provided on an outer wall of the valve body at the opening, and the valve cover is screwed to the valve body by the thread, where the thread includes a plurality of thread segments, and the plurality of thread segments are arranged at intervals along the circumferential direction of the valve body.

[0005] It can be seen that the screw of the present application includes a plurality of screw segments, and the plurality of screw segments are arranged at intervals along the circumferential direction of the valve body. In this way, the connection between the valve body and the valve cover can be realized by providing only a small number of screw segments, the screw parts that play no role can be omitted, the amount of work required for fastening or loosening can be reduced, quick screwing or removal can be realized, and the work efficiency can be improved, and the material problem of processing and manufacturing the screw can be solved, thereby saving costs.

[0006] In one embodiment, the thread segments lie on the same helix.

[0007] It can be seen that multiple screw segments are arranged on the same spiral line, and this arrangement is simpler than an arrangement on multiple spiral lines, thereby simplifying the processing steps and reducing the processing difficulty.

[0008] In one embodiment, the thread segments are uniformly spaced and distributed around the circumference of the valve disc.

[0009] With this design, the thread segments are uniformly arranged around the circumference of the valve body, and when the valve cover and the valve body are screwed together, the evenly distributed thread segments and the valve cover are screwed together, resulting in uniform stress between the valve body assembly and the valve cover and ensuring a stable connection.

[0010] In one embodiment, the axis of the valve disc is defined as l, the threaded segments are provided in multiple sets, and the multiple sets of threaded segments are spaced apart along the axis l of the valve disc.

[0011] The multiple sets of threaded segments provide multiple connection points for the connection between the valve cover and valve body, improving the strength and stability of the connection.

[0012] In one embodiment, two sets of screw segments are provided, and the two sets of screw segments are the first set of screw segments and the second set of screw segments respectively. The first set of screw segments includes at least a first screw segment and a second screw segment, and the second set of screw segments includes at least a third screw segment and a fourth screw segment. Here, the first screw segment is provided corresponding to the second screw segment and is arranged at intervals along the axial direction l of the valve body. The third screw segment is provided corresponding to the fourth screw segment and is arranged at intervals along the axial direction of the valve body.

[0013] With such a design, the screw segments are uniformly distributed, which is advantageous for improving the stability of the connection between the valve cover and the valve body. In this way, by providing relatively few screw segments, the requirement for connection strength can be met, and the material cost and processing cost can be saved.

[0014] In one embodiment, along the axial direction l of the valve body, the distance between two adjacent sets of screw segments is defined as H1, and the pitch of each set of screws is defined as H2, and H1 and H2 satisfy the relationship H2 = H1.

[0015] In one embodiment, the length of the projection of the screw segment along the axial direction l of the valve body is defined as L2, and the diameter of the opening of the valve body is defined as L1, and L1 and L2 satisfy the relationship L2 < L1.

[0016] The fact that H2 = H1 ensures that the screw segments are uniformly distributed. By making them uniformly distributed at the connection part between the valve cover and the valve body, it can be understood that the connection stability and connection strength between the two can be improved.

[0017] In one embodiment, the screw segment is formed by a forging press.

[0018] It can be seen that the valve body has a screw segment directly formed by a forging press, in which case the screw segment can be formed in a single process, eliminating the need for subsequent processing, significantly simplifying the processing steps, reducing processing costs, and improving the efficiency of processing and manufacturing.

[0019] In one embodiment, the thread segments are formed by machining.

[0020] The present application provides a stop valve, the stop valve including a valve body assembly as described above.

[0021] The details of one or more embodiments of the application are set forth in the drawings and description below. Other features, objects, and advantages of the application will become apparent from the description, drawings, and claims. [Brief description of the drawings]

[0022] To better describe and explain the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more drawings, in which additional details or examples used to explain the drawings should not be considered as limiting the scope of any of the disclosed inventions, the embodiments and / or examples described herein, and the best mode of these inventions as understood herein.

[0023] [Figure 1] FIG. 1 is a structural schematic diagram of a threaded portion in a related art. [Diagram 2] FIG. 2 is a structural schematic diagram of a valve body assembly provided in one embodiment of the present application. [Diagram 3] FIG. 2 is a front view of the valve body assembly of FIG. 1. [Figure 4] FIG. 3 is a left side view of the valve body assembly of FIG. 2. [Diagram 5] FIG. 3 is a top view of the valve body assembly of FIG. 2. [Figure 6] FIG. 2 is a structural schematic diagram of the valve body assembly in FIG. 1 including a valve cover. [Figure 7] FIG. 6 is a cross-sectional view of FIG.

[0024] A threaded portion, 100 valve body assembly, 10 valve body, 11 opening, 20 thread, 21 helix, 22 thread segment, 221 first set of thread segments, 222 second set of thread segments, 22a first thread segment, 22b second thread segment, 22c third thread segment, 22d fourth thread segment, 30 valve cover. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] In order to make the above objects, features and advantages of the present application clearer and easier to understand, the following describes in detail the specific embodiments of the present application with reference to the drawings. In the following description, various specific details are described in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other aspects different from those described herein, and those skilled in the art can make similar improvements without going against the content of the present application, so the present application is not limited by the specific examples disclosed below.

[0026] It should be explained that when an assembly is referred to as being "fixed" or "mounted" on another assembly, it may be directly fixed to the other assembly or there may be an intervening assembly present. When an assembly is referred to as being "connected" to another assembly, it may be directly connected to the other assembly or there may be an intervening assembly present at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for descriptive purposes only and do not represent the only embodiments.

[0027] Furthermore, the terms "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying a relative importance or implicitly designating the number of technical features depicted. Thus, a feature qualified with "first" or "second" may explicitly state or implicitly include at least one of that feature. In the description of this application, "plurality" means at least two, e.g., two, three, etc., unless explicitly and specifically limited.

[0028] In this application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first feature and the second feature are in direct contact with each other, or that the first feature and the second feature are in indirect contact with each other via an intermediate medium. Furthermore, a first feature being "above," "above," and "upper side" of a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," and "lower side" of a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply that the horizontal height of the first feature is lower than that of the second feature.

[0029] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used in the description of this application are intended only to describe certain embodiments and are not intended to limit this application. When used in the specification of this application, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0030] Referring to FIG. 1, in the related art, the valve body assembly of the stop valve and other components are connected by a threaded portion A, and the thread is continuous and uninterrupted. Here, the other components include a joint or a valve cover, etc. In some application scenarios, some thread segments in the threaded portion A do not play the role of fastening connection. For example, in application scenarios where the other components and the valve body assembly are only connected and do not need to ensure sealing, if a continuous uninterrupted thread is provided, there will be some thread segments that do not play a role, and in the process of the other components being fastened or loosened to the valve body assembly, all the thread segments must spiral in and out in sequence, so the amount of fastening or loosening work is increased by the part of the threaded segments that do not play a role, thereby reducing the work efficiency, and providing a continuous uninterrupted thread requires more material, and the raw material cost and processing cost are higher.

[0031] 2 to 7, one embodiment of the present application provides a valve body assembly 100 of a stop valve, the valve body assembly 100 includes a valve body 10 and a valve cover 30, an opening 11 is drilled at one end of the valve body 10, the valve cover 30 is placed over the opening 11 and connected to the valve body 10, a thread 20 is provided on an outer wall of the opening 11 of the valve body 10, and the valve cover 30 is screwed to the valve body 10 by the thread 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 circumferential direction of the valve body 10.

[0032] Compared with the prior art (FIG. 1), the screw 20 of the present application includes a plurality of screw segments 22, and the plurality of screw segments 22 are arranged at intervals along the circumferential direction of the valve body 10. In this way, it can be seen that only a small number of screw segments 22 can be provided to realize the connection between the valve body 10 and the valve cover 30, and the screw parts that play no role can be omitted, the amount of work required for fastening or loosening can be reduced, rapid screwing or removal can be achieved, and work efficiency can be improved. Furthermore, the material used to make the screw 20 can be saved, thereby saving costs.

[0033] 2 and 5, one screw 20 has one corresponding helix 21, in this embodiment, one screw 20 is provided, one screw 20 includes multiple thread segments 22, the multiple thread segments 22 are located on the same helix 21, the multiple thread segments 22 are provided to increase the stability of the fastening connection, the number of thread segments 22 provided on each helix 21 is not limited to the illustrated number, and may be, for example, two or three. Of course, in other embodiments, the number of provided screws 20 is not limited to the above, for example, when two screws 20 are provided, the multiple thread segments 22 are distributed on the two helixes 21, respectively.

[0034] The thread segments 22 are distributed at uniform intervals along the circumferential direction of the valve body 10, and the thread segments 22 are uniformly distributed along the circumferential direction of the valve body 10. When the valve cover 30 is screwed to the valve body 10 by the screw 20, the uniformly distributed thread segments 22 and the valve cover 30 are screwed together, so that the stress between the valve body assembly 100 and the valve cover 30 is uniform and the connection is stable. Specifically, in this embodiment, referring to Figures 2 to 5, the axis of the valve body is defined as l, and four thread segments 22 are provided on one helix 21, where two thread segments 22 are distributed on both sides of the valve body 10 with the axis l of the valve body 10 as the midline, and the two thread segments 22 located on the same side are arranged side by side along the axial direction of the valve body 10, and in this way, when the valve cover 30 and the valve body 10 are screwed together, the connection engagement area between the valve cover 30 and the valve body 10 can be increased, and the strength of the connection between the two can be improved, so that the connection can be stable. Of course, in other embodiments, there may be only two thread segments 22, and the two thread segments 22 are distributed on opposite sides of the valve body 10 with the axis l of the valve body 10 as the center line. Or, there may be three thread segments 22, and the three thread segments 22 are arranged along the helix 21 and in the circumferential direction of the valve body 10.

[0035] The screw segments 22 are provided in multiple sets, and the multiple sets of screw segments 22 are spaced apart along the axial direction l of the valve body 10, so that the multiple sets of screw segments 22 provide multiple connection points for connecting the valve cover 30 and the valve body 10, thereby improving the strength and stability of the connection.

[0036] For example, in this embodiment, referring to FIG. 2 to FIG. 5, there are two sets of thread segments 22, and the two sets of thread segments 22 are a first set of thread segments 221 and a second set of thread segments 222, respectively, the first set of thread segments 221 includes at least a first thread segment 22a and a second thread segment 22b, and the second set of thread segments 222 includes at least a third thread segment 22c and a fourth thread segment 22d, where the first thread segment 22a and the second thread segment 22b are provided on both sides of the valve body 10. The first and second thread segments 22a and 22b are correspondingly provided on both sides of the valve body 10 and are spaced apart along the axis l of the valve body 10, and the third and fourth thread segments 22c and 22d are correspondingly provided on both sides of the valve body 10 and are spaced apart along the axis l of the valve body 10, such a design makes the thread segments 22 uniformly distributed, which is favorable for improving the stability of the connection between the valve cover 30 and the valve body 10, and thus only a relatively small number of thread segments 22 is required to meet the requirements of connection strength, and material costs and processing costs can be saved. Of course, in other embodiments, multiple sets of thread segments 22 may be provided, and the arrangement of each thread segment 22 in the multiple sets of thread segments 22 is not limited to the above.

[0037] Continuing to refer to FIG. 4, along the axial direction l of the valve body 10, the distance between two adjacent sets of thread segments 22 is defined as H1. In other words, the interval between two sets of thread segments 22 correspondingly provided along the axial line l of the valve body 10 in two adjacent sets of thread segments 22 is defined as H1. The pitch of each set of threads 20 is defined as H2, and H1 and H2 satisfy the relationship H2 = H1. In this way, by ensuring that the thread segments 22 are evenly distributed and making them evenly distributed at the connection part between the valve cover 30 and the valve body 10, the connection stability and connection strength between the two are improved. Specifically, in this embodiment, as shown in FIG. 4, the interval between the adjacent first thread segment 22a and the third thread segment 22c is defined as H1, the interval between the adjacent second thread segment 22b and the fourth thread segment 22d is defined as H1. 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 this thread 20 is defined as H2, where H2 = H1. In other embodiments, the interval between two adjacent sets of thread segments 22 may not be equal to the pitch of the thread 20.

[0038] In one embodiment, referring to FIG. 3, the length of the projection of the thread segment 22 along the axial direction l of the valve body 10 is defined as L2, and the diameter at the opening 11 of the valve body 10 is defined as L1. L1 and L2 satisfy the relationship L2 < L1. In this way, it is avoided that the thread segment 22 is too long and wasted. If the thread segment 22 is too long, a part of it may not play a role in connection, further increasing the amount of work for screwing in and also increasing the manufacturing cost.

[0039] In one embodiment, the thread segment 22 is formed by a forging press. The forging press includes forging and pressing. The valve body 10 directly forms the thread segment 22 by the forging press. In this way, the thread segment 22 can be formed only by this single processing, without the need for subsequent processing, clearly simplifying the processing steps, reducing the processing cost, and also improving the efficiency of processing and manufacturing.

[0040] In other embodiments, other machining methods may be used to machine the threaded segments 22. For example, the threaded segments 22 may be formed by machining, specifically, by turning.

[0041] The present application further provides a stop valve, which includes any of the valve body assembly 100 described above, and the stop valve adopts the above valve body assembly 100, and the valve body assembly 100 and the valve cover 30 are connected by a screw segment 22, so that the assembly process can be shortened and labor-saving, which is advantageous to improve the speed of assembly or disassembly of the stop valve and the valve cover 30, and further improves work efficiency and reduces labor costs.

[0042] Compared with the related art, the connection between the valve body 10 and the valve cover 30 is realized by providing a thread 20 on the outer wall of the valve body 10 of the valve body assembly 100, and it should be emphasized that in some fastening scenes, some thread segments 22 of the thread 20 are always unused for fastening connection. 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 circumferential direction of the valve body 10, so that the connection between the valve body 10 and the valve cover 30 can be realized by providing only a small number of thread segments 22, the thread segments 22 that play no role can be omitted, the amount of fastening or loosening work can be reduced, quick screwing or removal can be realized, and the work efficiency can be improved, and the material problem of processing and manufacturing the thread 20 can be solved, and the cost can be saved.

[0043] Each of the technical features of the above-mentioned embodiments may be combined in any combination. For the sake of brevity, not all possible combinations of each of the technical features in the above-mentioned embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, all of them should be considered within the scope described in this specification.

[0044] The above examples merely show some embodiments of the present application, and although the description is relatively specific and detailed, it should not be understood as limiting the scope of the claims of the present application. It should be noted that those skilled in the art can make some modifications and improvements without departing from the spirit of the present application, all of which are within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the scope of the attached claims.

Claims

1. 1. A valve body assembly for a stop valve, comprising a valve body and a valve cover, the valve body having an opening at one end thereof, the valve cover being disposed over the opening and connected to the valve body, A valve body assembly for a stop valve, wherein a thread is provided on an outer wall of the opening of the valve body, and the valve cover is screwed to the valve body by the thread, wherein the thread includes a spiral and a plurality of thread segments, and the plurality of thread segments are located on the spiral and arranged at intervals along a circumferential direction of the valve body.

2. The stop valve disc assembly of claim 1 , wherein the plurality of thread segments are uniformly spaced and distributed circumferentially around the disc.

3. 2. The valve body assembly of claim 1, wherein an axis of the valve body is defined as l, the screw segments are provided in a plurality of sets, and the plurality of sets of the screw segments are provided at intervals along the axis l of the valve body.

4. The thread segments are provided in two sets, and the two sets of thread segments are a first set of thread segments and a second set of thread segments, respectively, the first set of thread segments including at least a first thread segment and a second thread segment, and the second set of thread segments including at least a third thread segment and a fourth thread segment; 4. The valve body assembly of claim 3, wherein the first thread segment corresponds to the second thread segment and is spaced apart along the axial direction of the valve body, and the third thread segment corresponds to the fourth thread segment and is spaced apart along the axial direction of the valve body.

5. The distance between two adjacent pairs of the screw segments is H along the axis l of the valve body. １ and the pitch of each set of threads is H ２ is defined as １ and the above H ２ The relation H ２ =H １ The valve body assembly of claim 3 , wherein

6. The length of the projection of the screw segment along the axis l of the valve body (10) is L ２ and the diameter of the opening of the valve body is L １ is defined as L １ and L ２ The relationship is L ２ <L １ The stop valve body assembly according to claim 1 ,

7. The stop valve body assembly of claim 1 , wherein the threaded segments are formed by a forging press.

8. The stop valve body assembly of claim 1 , wherein the thread segments are formed by machining.

9. 1. A stop valve including a valve body assembly, comprising: The valve body assembly includes a valve body and a valve cover, an opening is formed at one end of the valve body, the valve cover is disposed over the opening and is connected to the valve body, A stop valve, wherein a thread is provided on an outer wall of the valve body at the opening, and the valve cover is screwed to the valve body by the thread, wherein the thread includes a plurality of thread segments, and the plurality of thread segments are arranged at intervals along a circumferential direction of the valve body.

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