Ball valve

Abstract

The ball valve comprises a valve body assembly, a valve ball and a filter, the valve body assembly is provided with a first connector and a second connector, and the valve ball is rotationally arranged in the valve body assembly and can separate or communicate the first connector and the second connector; the number of the filter is one, and one filter is connected to the first interface; or the number of the filters is configured to be two, and the two filters are connected to the first connector and the second connector respectively. According to the ball valve provided by the invention, the filter is integrated on the ball valve, so that the ball valve has a filtering function, parts of the ball valve are simplified, and the cost of the ball valve is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a ball valve. BACKGROUND

[0002] The ball valve is usually installed in a pipeline system and used for switching the medium in the pipeline system. Specifically, the ball valve comprises a valve body assembly, two connecting pipes and a valve ball installed in the valve body assembly, the valve body assembly has two interfaces, each connecting pipe is connected to one interface and used for connecting the pipeline system, and the two connecting pipes are connected or disconnected by rotating the valve ball, so as to realize the flow or isolation of the medium in the pipeline system.

[0003] Since the medium in the pipeline system usually contains impurities such as slag and oil, a filter needs to be arranged to filter the impurities in the medium, and the filter and the ball valve are usually two separate parts, which need to be connected by the user, resulting in high use cost and inconvenience in use. CONTENT OF THE INVENTION

[0004] Therefore, it is necessary to provide a ball valve with a filtering function.

[0005] A ball valve, comprising a valve body assembly, a valve ball and a filter structure, the valve body assembly has a first interface and a second interface, the valve ball is rotatably arranged in the valve body assembly and can isolate or connect the first interface and the second interface; the number of filter structures is one, and one filter structure is connected to the first interface; or the number of filter structures is two, and two filter structures are respectively connected to the first interface and the second interface.

[0006] In one of the embodiments, a filter screen is arranged in the filter structure.

[0007] In one of the embodiments, the filter structure comprises a middle section and a first necked section and a second necked section connected to both ends of the middle section, the inner diameter of the middle section is greater than the inner diameters of the first necked section and the second necked section; the filter screen is arranged in the middle section, and the first necked section is connected to the first interface or the second interface.

[0008] In one of the embodiments, the middle section, the first necked section and the second necked section are configured as an integral structure formed by spinning.

[0009] In one of the embodiments, the filter structure further comprises a filter screen seat, the filter screen seat is provided with a mounting hole, the filter screen is arranged in the mounting hole, and the filter screen seat is connected to the middle section.

[0010] In one of the embodiments, the filter screen comprises a cylinder, one end of the cylinder is provided with a base, the other end is provided with an opening, and the outer edge of the opening is fixed to the hole wall of the mounting hole.

[0011] In one embodiment, the middle section is provided with two limiting protrusions, each limiting protrusion having a protrusion extending toward the axis of the middle section relative to the inner wall of the middle section, the two limiting protrusions being spaced apart along the axial direction of the middle section, the filter seat being located between the two limiting protrusions, and the two ends of the filter seat abutting against the two protrusions respectively.

[0012] In one embodiment, the number of filter structures is configured to be one, and one filter structure is connected to the first interface; the ball valve also includes a connecting pipe that is connected to the second interface of the valve body assembly.

[0013] In one embodiment, the ball valve further includes a valve assembly inserted into the side wall of the connecting pipe; or, the valve assembly is inserted into the side wall of the filter structure.

[0014] In one embodiment, the valve body assembly includes a main valve body, a first end cap, and a second end cap. A valve ball is rotatably mounted in the main valve body, and the main valve body has two ports. The first end cap is welded and fixed to one of the ports, a first interface is opened in the first end cap and communicates with the main valve body, and a first constricted section is welded and fixed to the first interface. The second end cap is welded and fixed to the other port, a second interface is opened in the second end cap and communicates with the main valve body, and one end of the connecting pipe is welded and fixed to the second interface.

[0015] In one embodiment, the ball valve further includes a first sleeve and a second sleeve, at least a portion of the first sleeve being welded to the second constricted section; at least a portion of the second sleeve being welded to the end of the connecting pipe away from the second interface.

[0016] In one embodiment, the main valve body, the first end cap, the second end cap, the filter structure, and the connecting pipe are all made of stainless steel, while the first sleeve and the second sleeve are both made of copper. The first sleeve is fixed to the second constricted section by brazing, the first constricted section is fixed to the first interface by brazing, one end of the connecting pipe is fixed to the second interface by brazing, and the other end of the connecting pipe is fixed to the second sleeve by brazing. The first end cap is fixed to the corresponding port by laser welding, and the second end cap is fixed to the corresponding port by laser welding.

[0017] In one embodiment, the valve ball has a channel, and the valve ball can be rotated to connect the channel to the first interface and the second interface, or to close the first interface and the second interface with the outer wall of the valve ball.

[0018] Compared to existing technologies, the ball valve provided in this application integrates the filter structure onto the ball valve by connecting it to either the first or second port, thus enabling the ball valve to perform filtration. This eliminates the need for users to purchase the filter structure and ball valve separately, and also eliminates the need for assembly during use, thereby simplifying operation and reducing operating costs. Furthermore, unlike related structures that require two connecting pipes to connect to the first and second ports respectively, the filter structure in this application is directly connected to either the first or second port, replacing at least one connecting pipe in the related structures, which simplifies the ball valve components and reduces its cost. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Fig. 1 An isometric view of a ball valve in one embodiment provided in this application;

[0021] Fig. 2 A cross-sectional view of a ball valve in one embodiment provided in this application;

[0022] Fig. 3 A cross-sectional view of a filter in one embodiment provided in this application.

[0023] Reference numerals: 100, ball valve; 10, valve body assembly; 11, main valve body; 101, port; 13, first end cap; 131, first interface; 14, second end cap; 141, second interface; 20, valve ball; 21, channel; 30, filter structure; 31, filter screen; 311, cylinder; 312, base; 313, opening; 32, intermediate section; 321, limiting protrusion; 33, first constricted section; 34, second constricted section; 35, filter screen holder; 351, mounting hole; 352, flat plate; 353, flange; 40, connecting pipe; 50, valve assembly; 60, first sleeve; 70, second sleeve; 80, valve stem. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0029] Please see Figs. 1 to 3This application provides a ball valve 100, which includes a valve body assembly 10, a valve ball 20, a filter structure 30, and a connecting pipe 40. The valve body assembly 10 has a first interface 131 and a second interface 141. The valve ball 20 is rotatably disposed within the valve body assembly 10 and can isolate or connect the first interface 131 and the second interface 141. The filter structure 30 is configured to be one, and the filter structure 30 is connected to the first interface 131; or, the filter structure 30 is configured to be two, and the filter structures 30 are respectively connected to the first interface 131 and the second interface 141.

[0030] By connecting the filter structure 30 to either the first interface 131 or the second interface 141, the filter structure 30 is integrated into the ball valve 100, enabling the ball valve 100 to perform a filtering function. This eliminates the need for users to purchase the filter structure 30 and the ball valve 100 separately, and also eliminates the need for assembly during use, thus simplifying user operation and reducing operating costs. Furthermore, compared to related structures that require two connecting pipes to the first interface 131 and the second interface 141 respectively, the filter structure 30 in this application is directly connected to either the first interface 131 or the second interface 141, thereby replacing at least one connecting pipe in the related structures, simplifying the ball valve 100 components and reducing its cost.

[0031] The filter structure 30 includes a filter screen 31.

[0032] Exemplarily, in one embodiment, such as Fig. 1 and Fig. 2 As shown, the filter structure 30 is configured as a single unit, and one end of the filter structure 30 is connected to the first interface 131. The ball valve 100 also includes a connecting pipe 40, which is connected to the second interface 141 of the valve body assembly 10. It should be noted that in this embodiment, the ball valve 100 is configured as a two-way valve, that is, the flow direction of the medium can be either from the filter structure 30 to the connecting pipe 40 or from the connecting pipe 40 to the filter structure 30.

[0033] In one embodiment, such as Fig. 2 and Fig. 3As shown, the filter structure 30 includes a middle section 32 and a first constricted section 33 and a second constricted section 34 connected to both ends of the middle section 32. The inner diameter of the middle section 32 is larger than the inner diameters of the first constricted section 33 and the second constricted section 34. A filter screen 31 is installed in the middle section 32, and the first constricted section 33 is connected to either the first interface 131 or the second interface 141. The second constricted section 34 is used to connect to a piping system. Thus, when the inner diameter of the first constricted section 33 matches the size of the first interface 131, and when the size of the second constricted section 34 matches the size of the connection position with the piping system, by setting the inner diameter of the middle section 32 to be larger than the inner diameters of the first constricted section 33 and the second constricted section 34, it is beneficial to increase the flow rate of the medium passing through the filter screen 31, thereby improving the filtration efficiency of the filter structure 30 for impurities.

[0034] Furthermore, the intermediate section 32, the first constricted section 33, and the second constricted section 34 are configured as an integral structure formed by spinning. It should be noted that spinning is a special forming method mainly used to fix a flat or hollow blank onto the mold of a spinning machine. The spindle of the spinning machine drives the blank to rotate, while a spinning wheel or pusher applies pressure to the blank, causing localized plastic deformation, thereby forming the desired hollow rotating part. By configuring the first constricted section 33 and the second constricted section 34 as an integral structure formed by spinning, the pressure resistance and integrity of the filter structure 30 are improved.

[0035] The filter structure 30 also includes a filter holder 35, which has a mounting hole 351. The filter 31 is installed in the mounting hole 351, and the filter holder 35 is connected to the intermediate section 32.

[0036] Specifically, the filter screen 31 includes a cylindrical body 311, with a base 312 at one end and an opening 313 at the other end. The outer edge of the opening 313 is fixed to the wall of the mounting hole 351. The medium flows from the base 312 toward the opening 313.

[0037] Furthermore, the intermediate section 32 is provided with two limiting protrusions 321. Each limiting protrusion 321 has a protrusion extending towards the axis of the intermediate section 32 relative to the inner wall of the intermediate section 32. The two limiting protrusions 321 are spaced apart along the axial direction of the intermediate section 32. The filter holder 35 is located between the two limiting protrusions, and both ends of the filter holder 35 abut against the two protrusions respectively. This facilitates the installation and fixation of the filter holder 35 to the intermediate section 32. Two constrictions can be machined into the intermediate section 32 using a spinning process, with each constriction corresponding to a limiting protrusion 321 inside the intermediate section 32.

[0038] Specifically, the filter holder 35 includes a flat plate 352 and a flange 353 surrounding the periphery of the flat plate 352. The mounting hole 351 is opened in the flat plate 352. The flange 353 is perpendicular to the flat plate 352, and the two ends of the flange 353 abut against two limiting protrusions 321 respectively.

[0039] like Fig. 2 As shown, the ball valve 100 also includes a valve assembly 50. Optionally, in one embodiment, the valve assembly 50 is inserted into the side wall of the connecting pipe 40. Specifically, the side wall of the connecting pipe 40 has a flanged hole, and the valve assembly 50 is welded and fixed to the flanged hole. The valve assembly 50 is used to charge refrigerant into the connecting pipe 40.

[0040] Alternatively, in another embodiment, the valve assembly 50 is inserted into the side wall of the filter structure 30. Specifically, the side wall of the filter structure 30 has a flanged hole, and the valve assembly 50 is welded and fixed to the flanged hole. The valve assembly 50 is used to charge refrigerant into the filter structure 30.

[0041] like Fig. 2 As shown, the valve body assembly 10 includes a main valve body 11, a first end cap 13, and a second end cap 14. The valve ball 20 is rotatably mounted inside the main valve body 11, and the main valve body 11 has two ports 101. The first end cap 13 is welded and fixed to one of the ports 101, and a first interface 131 is opened in the first end cap 13 and communicates with the main valve body 11. A first constricted section 33 is welded and fixed to the first interface 131. The second end cap 14 is welded and fixed to the other port 101, and a second interface 141 is opened in the second end cap 14 and communicates with the main valve body 11. One end of the connecting pipe 40 is welded and fixed to the second interface 141.

[0042] The ball valve 100 also includes a first sleeve 60 and a second sleeve 70. At least a portion of the first sleeve 60 is welded and fixed to the second constricted section 34; at least a portion of the second sleeve 70 is welded and fixed to the end of the connecting pipe 40 away from the second interface 141. The first sleeve 60 is used to connect the external pipeline and the second constricted section 34, and the second sleeve 70 is used to connect the external pipeline and the connecting pipe 40.

[0043] Optionally, in one embodiment, the main valve body 11, the first end cap 13, the second end cap 14, the filter structure 30, and the connecting pipe 40 are all made of stainless steel. Specifically, the filter structure 30 is made of low-carbon 304 stainless steel, and the filter screen 31 is made of high-temperature resistant austenitic stainless steel.

[0044] Both the first sleeve 60 and the second sleeve 70 are made of copper. The first sleeve 60 is fixed to the second constricted section 34 by brazing, the first constricted section 33 is fixed to the first interface 131 by brazing, one end of the connecting pipe 40 is fixed to the second interface 141 by brazing, and the other end of the connecting pipe 40 is fixed to the second sleeve 70 by brazing. The first end cap 13 is fixed to the corresponding port 101 by laser welding, and the second end cap 14 is fixed to the corresponding port 101 by laser welding.

[0045] In this embodiment, by using stainless steel for the main valve body 11, the first end cap 13, the second end cap 14, the filter structure 30, and the connecting pipe 40, the cost of the ball valve 100 can be reduced. Furthermore, the first sleeve 60 and the second constricted section 34 can be brazed together, and the first constricted section 33 and the first interface 131 can be brazed together, forming a single integrated structure. Then, the first end cap 13 of this integrated structure can be laser-welded to the corresponding port 101. Similarly, one end of the connecting pipe 40 can be brazed to the second interface 141, and the other end of the connecting pipe 40 can be brazed to the second sleeve 70, forming a single integrated structure. Then, the second end cap 14 of this integrated structure can be laser-welded to the corresponding port 101.

[0046] like Fig. 2 As shown, the ball valve 100 also includes a valve stem 80, one end of which is fixedly connected to the valve ball 20, and the other end extends out of the main valve body 11. The user can rotate the valve ball 20 by turning the valve stem 80. The valve ball 20 has a channel 21, which can be rotated to connect the channel 21 to the first interface 131 and the second interface 141, or to close the first interface 131 and the second interface 141 with the outer wall of the valve ball 20.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A ball valve, characterized in that, The ball valve (100) includes a valve body assembly (10), a valve ball (20), and a filter structure (30). The valve body assembly (10) has a first interface (131) and a second interface (141). The valve ball (20) is rotatably disposed within the valve body assembly (10) and is capable of isolating or connecting the first interface (131) and the second interface (141). The number of filter structures (30) is configured to be one, and one filter structure (30) is connected to the first interface (131); or, the number of filter structures (30) is configured to be two, and the two filter structures (30) are respectively connected to the first interface (131) and the second interface (141).

2. The ball valve according to claim 1, characterized in that, The filter structure (30) is equipped with a filter screen (31).

3. The ball valve according to claim 2, characterized in that, The filter structure (30) includes a middle section (32) and a first constricted section (33) and a second constricted section (34) respectively connected to both ends of the middle section (32). The inner diameter of the middle section (32) is larger than the inner diameter of the first constricted section (33) and the inner diameter of the second constricted section (34). The filter (31) is installed in the middle section (32), and the first constricted section (33) is connected to the first interface (131) or the second interface (141).

4. The ball valve according to claim 3, characterized in that, The intermediate section (32), the first narrowed section (33), and the second narrowed section (34) are configured as an integral structure formed by spinning.

5. The ball valve according to claim 3, characterized in that, The filter structure (30) further includes a filter holder (35), which has an installation hole (351), the filter (31) is installed in the installation hole (351), and the filter holder (35) is connected to the intermediate section (32).

6. The ball valve according to claim 5, characterized in that, The filter screen (31) includes a cylindrical body (311), one end of which is provided with a base (312) and the other end is provided with an opening (313), the outer edge of which is fixed to the wall of the mounting hole (351).

7. The ball valve according to claim 5, characterized in that, The intermediate section (32) is provided with two limiting protrusions (321). Each limiting protrusion (321) has a protrusion extending toward the axis of the intermediate section (32) relative to the inner wall of the intermediate section (32). The two limiting protrusions (321) are spaced apart along the axial direction of the intermediate section (32). The filter seat (35) is located between the two limiting protrusions (321), and both ends of the filter seat (35) abut against the two protrusions respectively.

8. The ball valve according to any one of claims 3-7, characterized in that, The number of the filter structure (30) is configured to be one, and one of the filter structures (30) is connected to the first interface (131); The ball valve (100) also includes a connecting pipe (40) that connects to the second port (141) of the valve body assembly (10).

9. The ball valve according to claim 8, characterized in that, The ball valve (100) further includes a valve assembly (50) which is inserted into the side wall of the connecting pipe (40); or, the valve assembly (50) is inserted into the side wall of the filter structure (30).

10. The ball valve according to claim 8, characterized in that, The valve body assembly (10) includes a main valve body (11), a first end cap (13) and a second end cap (14), the valve ball (20) is rotatably mounted in the main valve body (11), and the main valve body (11) has two ports (101); The first end cap (13) is welded and fixed to one of the ports (101), the first interface (131) is opened on the first end cap (13) and connected to the main valve body (11), and the first constricted section (33) is welded and fixed to the first interface (131). The second end cap (14) is welded and fixed to another port (101), the second interface (141) is opened on the second end cap (14) and connected to the main valve body (11), and one end of the connecting pipe (40) is welded and fixed to the second interface (141).

11. The ball valve according to claim 10, characterized in that, The ball valve (100) further includes a first sleeve (60) and a second sleeve (70), at least a portion of the first sleeve (60) being welded to the second constricted section (34); at least a portion of the second sleeve (70) being welded to the end of the connecting pipe (40) away from the second interface (141).

12. The ball valve according to claim 11, characterized in that, The main valve body (11), the first end cap (13), the second end cap (14), the filter structure (30) and the connecting pipe (40) are all made of stainless steel, and the first sleeve (60) and the second sleeve (70) are both made of copper. The first sleeve (60) is fixed to the second constricted section (34) by brazing, the first constricted section (33) is fixed to the first interface (131) by brazing, one end of the connecting pipe (40) is fixed to the second interface (141) by brazing, and the other end of the connecting pipe (40) is fixed to the second sleeve (70) by brazing. The first end cap (13) is fixed to the corresponding port (101) by laser welding, and the second end cap (14) is fixed to the corresponding port (101) by laser welding.

13. The ball valve according to claim 1, characterized in that, The valve ball (20) has a channel (21) and can be rotated to connect the channel (21) to the first interface (131) and the second interface (141), or can be rotated to close the first interface (131) and the second interface (141) on the outer wall of the valve ball (20).

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