Control valve

Abstract

The control valve comprises a valve body part, a filter assembly and a valve element, the valve body part comprises an inner cavity, the valve element is located in the inner cavity, the valve element comprises a flow passing channel, the valve body part comprises an inlet and an outlet, when the valve element is opened, the inlet and the outlet are communicated through the flow passing channel, and when the valve element is closed, the filter assembly is located in the inner cavity. When the valve core is closed, the inlet is not communicated with the outlet; the filter assembly comprises a filter screen, at least part of the filter screen is located in the overflowing channel, and the cross section of the filter screen is in a wave shape or a sawtooth shape. According to the control valve, through the filter screen with the wavy or sawtooth-shaped cross section, the contact face of the filter screen at the valve element and a medium is increased, the filtering efficiency of the filter screen on impurities carried in the medium is improved, and therefore the filtering performance of the control valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves with filtering functions, in particular to a control valve. Background Art

[0002] In valves with filtering function, Figure 1 The cross-sectional view of the valve in the background art includes a valve body 1' and a filter assembly 2' located inside the valve body 1'. The filter assembly 2' includes a flat filter disposed inside the valve core of the valve body 1'.

[0003] The structure of the above-mentioned valve has a limited contact surface between the filter and the medium when filtering impurities carried by the medium, which affects the filter assembly's efficiency in filtering impurities. Therefore, how to further improve the filtering performance of the control valve has become a problem of concern to those skilled in the art. Utility Model Content

[0004] The utility model provides a control valve, including a valve body component, a filter assembly and a valve core, the valve body component including an inner cavity, the valve core located in the inner cavity, the valve core including a flow passage, the valve body component including an inlet and an outlet, when the valve core is opened, the inlet and the outlet are connected through the flow passage, when the valve core is closed, the inlet and the outlet are not connected; the filter assembly includes a filter screen, the filter screen is at least partially located in the flow passage, and the cross-section of the filter screen is wavy or serrated.

[0005] The control valve provided in this application increases the contact area between the filter screen at the valve core and the medium through the filter screen with a wavy or serrated cross-section, thereby improving the filtering efficiency of the filter screen on impurities carried in the medium, thereby improving the filtering performance of the control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 : A cross-sectional schematic diagram of a valve in the background art;

[0007] Figure 2 : A cross-sectional schematic diagram of a control valve provided by the present invention in an open valve state;

[0008] Figure 3 : Figure 2 Top view of the middle control valve;

[0009] Figure 4 : Figure 2 A magnified schematic diagram of point A in the middle;

[0010] Figure 5 : Figure 2 A three-dimensional schematic diagram of the middle filter assembly;

[0011] Figure 6 : Figure 5 a cross-sectional view of the middle filter assembly;

[0012] Figure 7 : Figure 3 A three-dimensional schematic diagram of a single filter unit;

[0013] Figure 8 : Figure 7 The enlarged schematic diagram of point B in the middle;

[0014] Figure 9 : A cross-sectional schematic diagram of another control valve provided by the present invention in an open valve state;

[0015] Figure 10 : Figure 9 Enlarged schematic diagram at point C in the middle;

[0016] Figure 11 : Figure 9 Top view of the middle control valve;

[0017] Figure 12 : Figure 9 Schematic diagram of the middle filter assembly.

[0018] Figure 2-12 The accompanying drawings are:

[0019] 1-valve body component, 100-inner cavity, 101-inlet, 102-outlet, 11-first valve body, 12-second valve body, 121-limiting groove, 122-matching part, 13 / 13a-valve cap, 131-limiting member, 1311-first annular part, 1312-second annular part, 132 / 132a-elastic pad, 132a1-through hole,

[0020] 2-Filter assembly, 21-Casing, 210-Filter chamber, 211-Cylinder, 2111-First flow channel opening, 2112-Second flow channel opening, 2113-Mounting groove, 212-Top cover, 213-Limiting platform, 214-Outer ring, 215-Lower end surface, 22 / 22a-Filter screen, 220-Mesh, 2201-First filter screen section, 2202-Second filter screen section, 221 / 221a -Filter unit, 2211 / 221a1-first oblique body, 2212 / 221a2-second oblique body, 222 / 222a-connecting part, 2221 / 222a1-first connecting part, 2222 / 222a2-second connecting part, 23-grid body, 231-flow opening, 24-partition cover, 240-lower plane, 241-step part, 242-connecting groove, 243-opening,

[0021] 3-valve core, 31-flow channel, 311-first port, 312-second port, 32-through hole, 321-upper orifice, 322-lower orifice, 33-groove,

[0022] 4- Valve stem. DETAILED DESCRIPTION

[0023] In order to make those skilled in the art better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Figure 2 The positions of the components shown in the figure are defined only for the clarity and convenience of expressing the technical solution. It should be understood that the directional words used in this article should not limit the scope of protection requested by this application.

[0024] Figure 2 This is a cross-sectional schematic diagram of a control valve provided by the utility model in an open valve state; Figure 3 for Figure 2 Top view of the middle control valve; Figure 4 for Figure 2 A magnified schematic diagram of point A in the middle; Figure 5 for Figure 2 A three-dimensional schematic diagram of the middle filter assembly; Figure 6 for Figure 5 a cross-sectional view of the middle filter assembly; Figure 7 for Figure 3 A three-dimensional schematic diagram of a single filter unit; Figure 8 for Figure 7 Enlarged schematic diagram of point B in the middle.

[0025] It should be noted that Figure 2 For example, the axial direction of the housing 21 described below is the longitudinal direction of the control valve, and the radial direction of the housing 21 described below is the lateral direction of the control valve.

[0026] As shown in the figure, the control valve of this embodiment is described by taking a ball valve as an example, which includes a valve body component 1, a filter assembly 2, a valve core 3 and a valve stem 4; the valve body component 1 includes a first valve body 11, a second valve body 12 and a valve cap 13, the first valve body 11 is threadedly connected to the second valve body 12, the valve cap 13 is located below the first valve body 11, and the valve cap 13 is threadedly connected to the second valve body 12, the valve body component 1 includes an inner cavity 100, an inlet 101 and an outlet 102, the inlet 101 and the outlet 102 are connected to the inner cavity 100, a first valve port is provided at the end of the first valve body 11, and a second valve port is provided at the end of the second valve body 12. This embodiment is described by taking the first valve port as the above-mentioned inlet 101 when the fluid medium flows into the control valve and the second valve port as the above-mentioned outlet 102 when the fluid medium flows out of the control valve as an example. Of course, the first valve port can also be used as the above-mentioned outlet 102, and the second valve port can also be used as the above-mentioned inlet 101. The valve stem 4 is located above the valve core 3 , and one end of the valve stem 4 passes through the second valve body 12 and is connected to the valve core 3 .

[0027] The valve core 3 is a spherical structure, the valve core 3 is located in the inner cavity 100, the valve core 3 includes a flow passage 31, the flow passage 31 includes a first port 311 and a second port 312, the flow passage 31 is located between the inlet 101 and the outlet 102, when the valve core 3 is opened (i.e., Figure 2 The control valve shown is in an open state), the first port 311 corresponds to the inlet 101, the second port 312 corresponds to the outlet 102, the inlet 101 and the outlet 102 are connected through the flow channel 31, and when the valve core 3 is closed (that is, the control valve is in a closed state), the inlet 101 and the outlet 102 are not connected.

[0028] In this embodiment, the filter assembly 2 includes a filter screen 22, which is at least partially located within the flow passage 31. The filter screen 22 has a wavy or serrated cross-section. This cross-sectional shape of the filter screen 22 increases its contact surface with the medium in the flow passage 31, effectively intercepting impurities and increasing the filter screen 22's filtration efficiency, thereby enhancing the control valve's filtration performance.

[0029] by Figure 3 、 5 As shown in FIG6 , in this embodiment, the cross-section of the filter 22 is preferably sawtooth-shaped. The filter 22 includes a filter unit 221. The filter unit 221 includes a first oblique portion 2211 and a second oblique portion 2212 connected to each other. There are at least two filter units 221. Compared with the filter in the background art, the filter 22 has the following advantages:

[0030] On the one hand, the serrated structure lengthens the path of the medium as it passes through the filter screen 22, increasing the chances of impurities being intercepted. Furthermore, due to the characteristics of the serrated structure, the medium generates tiny eddies as it flows through the filter unit 221, which helps the medium aggregate and float upward, making it more easily captured by the filter screen 22. It should be noted that, provided that the mesh size 220 of the filter screen 22 is consistent with that of the filter screen in the background art, the filter screen 22 with this structural shape is very effective in capturing fine impurities.

[0031] On the other hand, the zigzag structure can also enable the filter screen 22 to withstand greater pressure and impact, thereby reducing the risk of damage under high-pressure or high-speed fluid conditions.

[0032] In this embodiment, the valve core 3 further includes a through hole 32. Figure 2 From the perspective, the through hole 32 is located below the flow channel 31, the upper orifice 321 of the through hole 32 is connected to the flow channel 31, the lower orifice 322 of the through hole 32 is connected to the valve core 3, the filter assembly 2 passes through the through hole 32, and a part of the shell 21 described below is located in the flow channel 31.

[0033] In this embodiment, the filter assembly 2 further includes a mesh body 23 having a wavy or serrated cross-section. The filter screen 22 includes a first filter screen portion 2201 and a second filter screen portion 2202. The first filter screen portion 2201 is in contact with the end surface of the mesh body 23 facing the inlet 101, and the second filter screen portion 2202 is in contact with the end surface of the mesh body 23 facing the outlet 102. The mesh body 23 includes a flow opening 231 for medium to pass through. The filter screen 22 covers the flow opening 231. The cross-sectional area of ​​the mesh 220 of the filter screen 22 is smaller than the cross-sectional area of ​​the flow opening 231. The mesh body 23 further enhances the overall strength of the filter screen 22, enabling the filter screen 22 to withstand greater pressure and impact, reducing or avoiding deformation caused by pressure changes, ensuring the shape stability of the filter screen 22, and ensuring the filter screen 22's efficiency in filtering impurities.

[0034] The thickness of the grid body 23 is greater than the thickness of the first filter screen portion 2201 and the thickness of the second filter screen portion 2202 , and the strength of the filter screen 22 can also be guaranteed accordingly.

[0035] The cross-sectional shape of the mesh body 23 is consistent with the cross-sectional shape of the filter screen 22, both of which are serrated. The mesh body 23 is a metal plate, and its material is preferably stainless steel. The mesh body 23 is formed by stamping. Of course, other processing methods can also be used under the premise of ensuring the formation of the mesh body 23. Based on this, the number of teeth of the mesh body 23 and the number of filter units 221 are preferably five, combined with Figure 6An example is given in which the number of teeth of the grid body 23 and the number of filter units 221 are 6. It should be noted that, although the filtering area is larger when the number of teeth of the grid body 23 and the number of filter units 221 are greater, too many teeth mean that the number of cutting points per unit area increases, which may lead to stress concentration of the material during the stamping process, increasing the risk of deformation and cracking of the material, and the increase in the number of teeth will cause the mold to wear faster, thereby shortening the service life of the mold.

[0036] In this embodiment, the filter assembly 2 also includes a shell 21, a portion of the shell 21 is located in the flow channel 31, the shell 21 includes a first flow channel opening 2111 and a second flow channel opening 2112, when the control valve is in the open state, the first flow channel opening 2111 corresponds to the first port 311, and the second flow channel opening 2112 corresponds to the second port 312; the shell 21 includes a filter chamber 210, the filter chamber 210 is connected to the first flow channel opening 2111 and the second flow channel opening 2112, and the filter net 22 is at least partially located in the filter chamber 210; the filter net 22 includes a connecting portion 222, the connecting portion 222 includes a first connecting portion 2221 and a second connecting portion 2222, the first connecting portion 2221 and the second connecting portion 2222 extend along the axial direction of the shell 21, the shell 21 includes a cylindrical portion 211, the first connecting portion 2221 and the second connecting portion 2222 are embedded in the cylindrical portion 211. In the axial direction of the housing 21 , the filter screen 22 is connected to the housing 21 via the connecting portion 222 , ensuring that the shape of the filter screen 22 remains stable and enhancing the impact resistance of the filter screen 22 .

[0037] The housing 21 further includes a top cover 212. The top end wall of the cylindrical portion 211 is connected to the bottom end wall of the top cover 212. The top end of the filter 22 is embedded in the top cover 212. This further ensures that the shape of the filter 22 can remain stable.

[0038] Combine Figure 6 As shown, in the radial direction of the housing 21, the filter screen 22 includes the aforementioned filter unit 221 connected to the cylindrical portion 211. A first oblique portion 2211 on one side is partially embedded in the cylindrical portion 211, with the portion of the first oblique portion 2211 embedded in the cylindrical portion 211 serving as a first connecting portion 2221. A second oblique portion 2212 on the other side is partially embedded in the cylindrical portion 211, with the portion of the second oblique portion 2212 embedded in the cylindrical portion 211 serving as a second connecting portion 2222. This further reduces the possibility of deformation of the filter screen 22 under impact from the medium, improves the stability of the filter assembly 2, and maintains the long-term filtering effect of the control valve.

[0039] Based on the above-mentioned mesh body 23, the mesh body 23 includes a first embedded portion and a second embedded portion connected to the cylindrical portion 211. The first embedded portion and the above-mentioned first connecting portion 2221 are embedded in the cylindrical portion 211, and the second embedded portion and the second connecting portion 2222 are embedded in the cylindrical portion 211. This makes the connection between the filter screen 22 and the housing 21 more reliable, improves the connection strength between the filter screen 22 and the housing 21, and thus enhances the structural strength of the filter assembly 2. At the same time, the housing 21 is an injection molded part, and the mesh body 23 and the filter screen 22 are combined with the housing 21 as inserts.

[0040] In this embodiment, the filter screen 22 is arranged to extend radially along the housing 21. Figure 6 As shown, in the radial direction of the shell 21, the first connecting portion 2221 and the second connecting portion 2222 are symmetrically arranged relative to the center of the shell 21, which is the best. The filter cavity 210 is separated by the filter screen 22 to have a first cavity and a second cavity. The first cavity is connected to the first flow channel opening 2111, and the second cavity is connected to the second flow channel opening 2112. The filter screen 22 makes the volumes of the first cavity and the second cavity roughly the same to adapt to occasions where the control valve requires two-way flow.

[0041] In this embodiment, the filter assembly 2 further includes a partition cover 24, which is connected to the housing 21. The lower plane 240 of the partition cover 24 is located below the lower end surface 215 of the housing 21, or the lower plane 240 of the partition cover 24 is flush with the lower end surface 215 of the housing 21. The partition cover 24 includes a step portion 241 and a connecting groove 242. The bottom end of the filter screen 22 extends into the connecting groove 242, and the connecting groove 242 is adapted to the filter screen 22. The step portion 241 is located at the outer edge of the partition cover 24, with the stepped surface of the step portion 241 facing upward. The bottom of the cylindrical portion 211 has a mounting groove 2113, and the step portion 241 cooperates with the mounting groove 2113. The partition cover 24 is connected to the filter screen 22. On the one hand, the partition cover 24 can isolate impurities at the bottom of the filter screen 22 through the partition cover 24, preventing impurities from flowing from the first cavity to the second cavity, thereby preventing impurities from flowing from the second flow channel 2112 to the outlet 102, thereby ensuring effective collection of impurities. On the other hand, combined with the above content, connection cooperation is provided for both side edges and the top of the filter screen 22 to make the connection between the filter screen 22 and the shell 21 more stable, ensure the overall strength of the filter screen 22, and further ensure the filtering efficiency of the filter screen 22.

[0042] The partition cover 24 may be Figure 5 The partition cover 24 is shown as a circular plate. Of course, the partition cover 24 can also be a straight plate structure or a semicircular structure. In the radial direction of the shell 21, an opening 243 is provided between the straight plate structure or the semicircular structure partition cover 24 and the inner wall of the shell 21.

[0043] like Figure 4As shown, the valve cap 13 includes an elastic pad 132 , which is located between the valve cap 13 and the second valve body 12 , and the elastic pad 132 ensures the sealing between the valve cap 13 and the second valve body 12 .

[0044] In this embodiment, the shell 21 includes a limiting support platform 213 and an outer ring portion 214. The limiting support platform 213 protrudes from the end of the outer ring portion 214 close to the valve core 3 side, and the second valve body 12 includes a limiting groove 121 and a matching portion 122. The limiting groove 121 is located at the end of the second valve body 12 on the side opposite to the valve cap 13, and the matching portion 122 extends from the end of the outer ring portion 214 close to the valve core 3 side. The limiting support platform 213 is at least partially located at the matching portion 122. The filter assembly 2 can limit the rotation of the shell 21 and the valve core 3 together through the cooperation between the limiting support platform 213 and the matching portion 122, ensuring that the first flow channel opening 2111 of the shell 21 is aligned with the inlet 101 and the second flow channel opening 2112 is aligned with the outlet 102; the outer ring portion 214 is located between the valve cap 13 and the second valve body 12, that is, in the axial direction of the shell 21, the filter assembly 2 is limited by the outer ring portion 214 in the axial direction of the shell 21. The upward displacement and downward displacement of the filter assembly 2 in the axial direction of the shell 21 are limited by the outer ring portion 214.

[0045] In this embodiment, the valve core 3 includes a groove 33, which is located above the through hole 32. The opening of the groove 33 is connected to the flow channel 31, and a part of the shell 21 is located in the groove 33, further ensuring the stability of the shell 21 in the valve core 3.

[0046] Figure 9 A cross-sectional schematic diagram of another control valve provided by the present invention in an open valve state; Figure 10 for Figure 9 Enlarged schematic diagram at point C in the middle; Figure 11 for Figure 9 Top view of the middle control valve; Figure 12 for Figure 9 Schematic diagram of the middle filter assembly.

[0047] As an example, the difference from the above example is that the structure of the filter screen 22a is different from that of the above filter screen 22, and the function is not exactly the same. The filter screen 22a is preferably suitable for occasions where the control valve is unidirectionally ventilated. Specifically, the filter screen 22a includes a filter unit 221a, and the filter unit 221a includes a first oblique body portion 221a1 and a second oblique body portion 221a2 connected to each other. There are at least two filter units 221a, and the filter screen 22a is extended along the circumference of the housing 21, such as Figure 11 As shown in FIG, the cross-section of at least two filter units 22a1 combined is U-shaped. The filter unit 221a can increase the contact surface with the medium, thereby improving the filtering performance of the control valve. At the same time, the U-shaped structure can also improve the reliability of the filter unit 22a1 and prevent failure.

[0048] Around the circumference of the housing 21, the filter 22a includes the aforementioned filter unit 221a connected to a connecting portion 222a. A first connecting portion 222a1 has a first connecting end near the center of the cylindrical portion 211. A first oblique portion 221a1 on one side is connected to the first connecting end. A second connecting portion 222a2 has a second connecting end near the center of the cylindrical portion 211. A second oblique portion 221a2 on the other side is connected to the second connecting end. The connection between the filter 22a and the housing 21 via the connecting portion 222a ensures that the shape of the filter 22 remains stable, thereby enhancing the filter 22's efficiency in filtering impurities.

[0049] In this example, the volume of the first cavity of the filter cavity 210 is larger than the volume of the second cavity. In order to facilitate the removal and flushing of impurities after the filter assembly 2 is removed from the valve core 3, an opening 243 is included between the partition cover 24a and the inner wall of the shell 21, and the opening 243 is connected to the first cavity.

[0050] Among them, the valve cap 13a includes a limiter 131 and an elastic pad 132a. The limiter 131 includes a first annular portion 1311 and a second annular portion 1312. The first annular portion 1311 extends from the inner end wall of the valve cap 13a toward the valve core 3 side. The second annular portion 1312 is connected to the end of the first annular portion 1311 close to the valve core 3 side. The outer diameter of the second annular portion 1312 is larger than the outer diameter of the first annular portion 1311. The outer annular surface of the second annular portion 1312 is in contact with the outer surface of the partition cover 24a. There is no contact, thereby avoiding interference between the outer ring surface of the second annular portion 1312 and the limiting member 131, ensuring the stability of the filter assembly 2 after installation; the elastic pad 132a includes a through hole 132a1, and the through hole 132a1 cooperates with the first annular portion 1311 so that the elastic pad 132a is limited by the limiting member 131, ensuring that the elastic pad 132a will not be displaced up or down when the valve cap 13a is disassembled and assembled, avoiding the elastic pad 132a from accidentally falling off the valve cap 13a.

[0051] The various technical features of the above-described embodiments can be combined. To make the description concise, not all possible combinations of the various technical features in the above-described 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.

[0052] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A control valve, characterized in that: The valve body comprises a valve body component, a filter assembly and a valve core, wherein the valve body component comprises an inner cavity, the valve core is located in the inner cavity, the valve core comprises a flow passage, the valve body component comprises an inlet and an outlet, when the valve core is opened, the inlet and the outlet are connected through the flow passage, and when the valve core is closed, the inlet and the outlet are not connected; The filter assembly includes a filter screen, which is at least partially located in the flow channel, and the cross section of the filter screen is wavy or sawtooth-shaped.

2. The control valve according to claim 1, characterized in that The filter assembly also includes a frame body, the cross-section of the frame body is wavy or serrated, the filter screen includes a first filter screen portion and a second filter screen portion, the first filter screen portion is in contact with the end face of the frame body facing the inlet side, the second filter screen portion is in contact with the end face of the frame body facing the outlet side, the frame body includes a flow opening portion, the filter screen covers the flow opening portion, and the cross-sectional area of ​​the mesh of the filter screen is smaller than the cross-sectional area of ​​the flow opening portion.

3. The control valve according to claim 1, wherein: The filter assembly further includes a housing, a portion of which is located in the flow passage, the housing including a first flow passage opening and a second flow passage opening, wherein when the control valve is in an open state, the first flow passage opening corresponds to the first port of the flow passage, and the second flow passage opening corresponds to the second port of the flow passage, the housing including a filter cavity, the filter cavity being in communication with the first flow passage opening and the second flow passage opening, and the filter screen being at least partially located in the filter cavity; The filter screen includes a connecting portion, which includes a first connecting portion and a second connecting portion. The first connecting portion and the second connecting portion extend along the axial direction of the shell. The shell includes a cylindrical portion, and the first connecting portion and the second connecting portion are embedded in the cylindrical portion.

4. The control valve according to claim 3, characterized in that The shell further includes a top cover portion, the top end wall of the cylindrical portion is connected to the bottom end wall of the top cover portion, and the top end of the filter screen is embedded in the top cover portion.

5. The control valve according to claim 3, characterized in that The filter assembly also includes a partition cover, the lower plane of the partition cover is located below the lower end surface of the shell, or the lower plane of the partition cover is flush with the lower end surface of the shell; the partition cover includes a step portion and a connecting groove, the bottom end of the filter screen extends into the connecting groove, the connecting groove is adapted to the filter screen, the step portion is located at the outer edge of the partition cover, the step surface of the step portion faces upward, the bottom of the cylindrical portion has a mounting groove, and the step portion cooperates with the mounting groove.

6. The control valve according to any one of claims 3 to 5, characterized in that: The filter screen includes a filter unit, the filter unit includes a first oblique body portion and a second oblique body portion connected to each other, there are at least two filter units, and the filter screen is arranged to extend radially along the housing; In the radial direction of the shell, the filter net includes the filter unit connected to the cylindrical portion, wherein the first oblique portion on one side is partially embedded in the cylindrical portion, and the portion of the first oblique portion embedded in the cylindrical portion serves as the first connecting portion, and the second oblique portion on the other side is partially embedded in the cylindrical portion, and the portion of the second oblique portion embedded in the cylindrical portion serves as the second connecting portion.

7. The control valve according to any one of claims 3 to 5, characterized in that: The filter screen includes a filter unit, the filter unit includes a first oblique body portion and a second oblique body portion connected to each other, there are at least two filter units, and the filter screen is extended along the circumference of the housing; In the circumference of the shell, the filter net includes the filter unit connected to the connecting portion, the first connecting portion has a first connecting end close to the center side of the cylindrical portion, the first oblique portion on one side is connected to the first connecting end, the second connecting portion has a second connecting end close to the center side of the cylindrical portion, and the second oblique portion on the other side is connected to the second connecting end.

8. The control valve according to claim 7, characterized in that The valve core further includes a through hole, the through hole is located below the flow passage, the filter assembly passes through the through hole, and a portion of the housing is located in the flow passage; The valve body component includes a valve bonnet, which includes a limit member and an elastic pad. The limit member includes a first annular portion and a second annular portion. The first annular portion extends from the inner end wall of the valve bonnet toward the valve core side, and the second annular portion is connected to the end of the first annular portion close to the valve core side. The outer diameter of the second annular portion is larger than the outer diameter of the first annular portion. The elastic pad includes a through hole, which cooperates with the first annular portion. The filter assembly also includes a partition cover, which is connected to the bottom of the shell. The outer ring surface of the second annular portion does not contact the outer surface of the partition cover.

9. The control valve according to any one of claims 1 to 5, characterized in that: The control valve is a ball valve, and the filter assembly also includes a shell, which is connected to the filter screen. The valve core includes a through hole and a groove. The through hole is located below the flow channel. The filter assembly passes through the through hole. The groove is located above the through hole. The opening of the groove is connected to the flow channel, and a portion of the shell is located in the groove.

10. The control valve according to claim 9, characterized in that The valve body component includes a first valve body, a second valve body and a valve cap, the first valve body is connected to the second valve body, the valve cap is threadedly connected to the second valve body, and the inner end wall of the valve cap is located below the filter assembly; The shell includes a limit support and an outer ring portion, the limit support protrudes from the end of the outer ring portion close to the valve core side, the second valve body includes a limit groove and a matching portion, the limit groove is located at the end of the second valve body opposite to the valve bonnet side, the matching portion extends from the end of the outer ring portion close to the valve core side, the limit support is at least partially located in the matching portion, and the outer ring portion is located between the valve bonnet and the second valve body.

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