Valve seat assembly and flow regulating valve

Abstract

The valve seat assembly comprises the valve seat assembly and a valve body, the valve seat assembly and the valve body are connected in a sealed mode, the valve seat assembly comprises a valve seat body and an adjusting part, the valve seat body is provided with a first matching plane, the adjusting part is provided with a second matching plane, and the first matching plane is attached to the second matching plane. The valve seat body is provided with a valve hole part and a circulation hole part, the valve seat assembly comprises a valve cavity, the valve body is provided with a first flow channel part and a second flow channel part, one end of the first flow channel part is communicated with the valve cavity through the circulation hole part, and the other end of the first flow channel part forms a first connector part; one end of the second flow channel part communicates with the valve cavity through the valve hole part, a second connector part is formed at the other end of the second flow channel part, and the flow regulating valve has high flow regulating precision and good impurity resistance and can be applied to automobiles.

Description

Technical Field

[0001] The present application relates to the technical field of valve devices, and in particular to a valve seat assembly and a flow regulating valve. Background Art

[0002] With the rapid development of new energy electric vehicles, there is a demand for small flow regulating valves for car refrigerators. The existing flow regulating valves for household refrigerators do not have a car interface. The existing flow regulating valves for car refrigerators are needle valve structures. The needle valve structure has problems such as high difficulty in valve needle processing and easy breakage, low flow regulation accuracy, and poor impurity resistance. Utility Model Content

[0003] The present application aims to solve the problems of low flow regulation accuracy and poor impurity resistance of existing flow regulating valves for vehicle refrigerators.

[0004] To solve the above problems, this application specifically provides the following technical solutions:

[0005] A valve seat assembly, which includes a valve seat body and an adjusting member, the valve seat body having a first mating plane and a connecting surface for connecting to the valve body, the valve seat body being provided with a flow hole portion and a connected valve hole portion and a flow adjustment portion, the flow hole portion and one end of the valve hole portion pass through the first mating plane, and the other end of the flow hole portion and the valve hole portion pass through the connecting surface, the adjusting member having a second mating plane, the second mating plane and the first mating plane being sealed and fitted together, the adjusting member being able to connect the valve hole portion and the flow hole portion, the first mating plane and the second mating plane being able to rotate relative to each other to adjust the flow cross-sectional area of ​​the flow adjustment portion.

[0006] A flow regulating valve, which includes a valve body and the above-mentioned valve seat assembly, the valve seat assembly and the valve body are connected, the valve body has a mating surface, the mating surface is connected to the connecting surface of the valve seat body, the valve body is provided with a first flow channel portion and a second flow channel portion, one end of the first flow channel portion passes through the mating surface and is connected with one end of the flow hole portion passing through the connecting surface, the second flow channel portion passes through the mating surface and is connected with one end of the valve hole portion passing through the connecting surface, the other end of the first flow channel portion is provided with a first interface portion, and the other end of the second flow channel portion is provided with a second interface portion.

[0007] The valve seat assembly and flow control valve described above have a valve seat body having a first mating plane, and a regulating member having a second mating plane. The first mating plane and the second mating plane are in contact with each other, and the first mating plane and the second mating plane rotate relative to each other to adjust the flow cross-sectional area of ​​the flow control portion. This results in high flow control accuracy and makes the direction of the valve opening and closing differ from the direction of the fluid flowing in the valve hole, thereby improving impurity resistance. In addition, the valve seat body of the valve seat assembly described above has a connecting surface for connecting to the valve body. When the valve seat assembly is applied to the flow control valve, the connecting surface of the valve seat assembly is in contact with the mating surface of the valve body. The valve body is provided with a first interface portion and a second interface portion, and the first interface portion and the second interface portion can be connected to the automobile cooling system. Therefore, the valve seat assembly and flow control valve described above can be used in automobiles, such as in vehicle refrigerators. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A three-dimensional diagram of an embodiment of a flow control valve provided in this application;

[0009] Figure 2 for Figure 1 Exploded view of

[0010] Figure 3 for Figure 1 Side view of

[0011] Figure 4 for Figure 3 AA section view;

[0012] Figure 5 for Figure 1 An exploded view of the valve seat assembly of the flow control valve shown;

[0013] Figure 6 A three-dimensional diagram of another embodiment of the flow control valve provided in this application;

[0014] Figure 7 for Figure 6 A three-dimensional view of the middle flange pressure plate;

[0015] Figure 8 for Figure 7 A three-dimensional cross-sectional view of

[0016] Figure 9 for Figure 6 A three-dimensional view of the center coil assembly.

[0017] Figure 10 for Figure 1 A side view of a valve seat assembly of a flow control valve is shown;

[0018] Figure 11 for Figure 10 BB cross-sectional view;

[0019] Figure 12 for Figure 1 A perspective view of a partial structure of a valve seat assembly of a flow control valve shown;

[0020] Figure 13 for Figure 12 Exploded view of

[0021] Figure 14 for Figure 1 A three-dimensional view of the partial structure of the valve seat assembly of the flow control valve shown.

[0022] The following are the descriptions of the reference numerals:

[0023] 100 valve seat assembly, 101 valve seat body, 1011 body portion, 1012 first boss portion, 1013 second boss portion, C first mating plane, E connecting surface, I connecting hole, 1014 valve hole portion, 1014a first hole section, 1014b second hole section, 1015 flow adjustment portion, 1016 flow hole portion, 102 adjusting member, 1021 plate-shaped body, 1021a first connecting hole, 1021b second connecting hole, 1022 raised portion, 1022a notch portion, D second mating plane, 1023 limiting portion, 103 valve shaft, 104 rotor, 105 sun gear, 105a flange portion, 105b toothed portion, 105c sleeve portion, 106 planetary gear, 107 fixed ring gear, 108 planetary gear carrier, 1081 disc-shaped body, 1082 boss, 1083 riveted portion, 1084 planetary gear shaft, 109 valve sleeve, 110 connecting sleeve, 110a flange portion, 111 shaft sleeve, 112 spring, 113 positioning pin, 114 stopper, X valve chamber, 115 gasket, 116 connecting column;

[0024] 200 valve body, 201 first flow channel portion, 201a first interface portion, 202 second flow channel portion, 202a second interface portion, 203 mounting hole portion, F mating surface, J positioning hole;

[0025] 300 flange pressing plate, 301 inner hole portion, 302 groove portion, 303 first positioning protrusion, 303a first guiding inclined surface;

[0026] 400 coil assembly, 401 housing, 402 orifice plate, 403 hook, 4031 second latching protrusion, 4031a second guide slope, 404 coil;

[0027] 500 first sealing ring;

[0028] 600 second sealing ring;

[0029] 700 third sealing ring. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution of the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] like Figures 1-4 As shown, the flow control valve provided by the present application includes at least a valve seat assembly 100 and a valve body 200. The valve seat assembly 100 is connected to the valve body 200. In this embodiment, the flow control valve also includes a flange pressure plate 300, and the valve seat assembly 100 is connected to the valve body 200 through the flange pressure plate 300 and threaded fasteners. Specifically, the flange pressure plate 300 is provided with an inner hole portion 301, and the flange pressure plate 300 is sleeved on the outside of the valve seat assembly 100 through the inner hole portion 301. The threaded fastener passes through the through hole on the flange pressure plate 300 and is screwed into the corresponding threaded hole on the valve body 200. At least a portion of the valve seat assembly 100 (a portion of the valve seat body 101 in the figure) is pressed between the flange pressure plate 300 and the valve body 200. It should be noted that the connection method between the valve seat assembly 100 and the valve body 200 is not limited to the flange pressure plate 300 connection. For example, a direct threaded connection can also be used, that is, one of the valve seat assembly 100 and the valve body 200 is provided with a threaded section and the other is provided with a threaded hole, and the threaded section is screwed into the threaded hole.

[0032] like Figure 4 and Figure 5 As shown, the valve seat assembly 100 includes a valve seat body 101 and an adjusting member 102. The valve seat body 101 has a first mating plane C and a connecting surface E, and the adjusting member 102 has a second mating plane D. The first mating plane C and the second mating plane D are in sealing contact. The adjusting member 102 can rotate relative to the valve seat body 101 about a rotation axis, allowing the second mating plane D to rotate relative to the first mating plane C to adjust the flow rate. Specifically, the valve seat body 101 is provided with a valve hole portion 1014, a flow adjustment portion 1015, and a flow hole portion 1016. The flow adjustment portion 1015 is recessed inward relative to the first mating plane C to form a non-through narrow slot-like structure. The width of the narrow slot-like structure gradually narrows from one end to the other, and the wide end of the narrow slot-like structure is connected to the valve hole portion 1014. One end of the valve hole portion 1014 and the flow hole portion 1016 passes through the connecting surface E. One end of the valve hole portion 1014 passes through the first matching plane C. The first matching plane C protrudes from the surface where the other end of the flow hole portion 1016 is located. The regulating member 102 includes a protruding portion 1022. The second matching plane D is located at one end surface of the protruding portion 1022. The protruding portion 1022 is provided with a notch portion 1022a (combined with Figure 12(Understanding the above) The notch 1022a forms an opening on the second mating plane D and the outer circumferential surface of the raised portion 1022. As the second mating plane D of the regulating member 102 rotates about the rotation axis relative to the first mating plane C of the valve seat body 101, the area of ​​the overlap between the notch 1022a, the projections of the flow regulating portion 1015, and the valve hole 1014 on a plane parallel to the first mating plane C changes, thereby achieving full opening of the flow regulating valve and flow regulation. When the projections of the notch 1022a, the flow regulating portion 1015, and the valve hole 1014 on a plane parallel to the first mating plane C do not overlap at all, the flow regulating portion 1015 and the notch 1022a are completely covered by the second mating plane D of the regulating member 102, preventing fluid from flowing into the flow regulating portion 1015 and the notch 1022a. At this point, the flow regulating valve is in a fully closed state. This flow regulating structure offers high flow regulation accuracy and, by differentiating the valve opening and closing direction from the fluid flow direction in the valve hole 1014, offers superior impurity resistance to needle valve structures.

[0033] like Figure 4 As shown, the valve seat assembly 100 has a valve cavity X, and one end of the flow hole portion 1016 is in communication with the valve cavity X. In this embodiment, the flow control valve further includes a valve sleeve 109. The valve seat body 101 and the valve sleeve 109 enclose a receiving space. The valve sleeve 109 has one end open and the other end closed. The valve seat body 101 is assembled at the open end of the valve sleeve 109, and the valve seat body 101 and the valve sleeve 109 are sealed. The valve cavity X is part of the receiving space. The raised portion 1022 of the regulating member 102 is located in the valve cavity X. The end surface of the valve seat body 101 facing the regulating member 102 defines a portion of the wall of the valve cavity X.

[0034] like Figure 4 As shown, the valve body 200 has a mating surface F that mates with the connection surface E of the valve seat body 101. The valve body 200 also has a first flow channel portion 201 and a second flow channel portion 202. One end of the first flow channel portion 201 extends through the mating surface F, and the other end of the first flow channel portion 201 has a first interface portion 201a. One end of the second flow channel portion 202 extends through the mating surface F, and the other end of the second flow channel portion 202 has a second interface portion 202a. Fluid can flow from the first interface portion 201a into the first flow channel portion 201, from the first flow channel portion 201 through the flow hole portion 1016 into the valve cavity X, from the valve cavity X along the flow control portion 1015 to the valve hole portion 1014, and then out of the second flow channel portion 202 through the valve hole portion 1014. The first interface portion 201a and the second interface portion 202a can be connected to a vehicle cooling system, so this flow control valve can be used in automobiles, for example, in car refrigerators.

[0035] like Figure 4As shown, in this embodiment, the valve body 200 is provided with a mounting hole 203, and at least a portion of the valve seat body 101 is located within the mounting hole 203 and sealed therewith. Specifically, the valve seat body 101 has a sidewall surface G, which mates with the side surface of the mounting hole 203. A mounting groove is provided on the sidewall G, in which a first sealing ring 500 is mounted, sealingly contacting the side surface of the mounting hole 203. A mating surface F is located at one end surface of the mounting hole 203, and a sealing groove is provided on the mating surface F. A second sealing ring 600 is mounted in the sealing groove, sealingly contacting the connecting surface E of the valve seat body 101. The second sealing ring 600 is disposed around the periphery of the port of the mating surface F of the second flow channel portion 202. It should be noted that if the mounting hole portion 203 on the valve body 200 is a threaded hole portion, and the valve seat assembly 100 and the mounting hole portion 203 are directly threadedly connected, the first sealing ring 500 may not be provided.

[0036] More specifically, Figure 4 As shown, in this embodiment, the valve seat body 101 is provided with a connecting hole I, one end of the connecting hole I passes through the connecting surface E, the valve body 200 is provided with a positioning hole J, one end of the positioning hole J passes through the mating surface F, the positioning hole J and the connecting hole I are aligned, and positioning pins 113 are installed in the positioning hole J and the connecting hole I. When the valve body 200 and the valve seat assembly 100 are assembled, the positioning pin 113 plays an auxiliary positioning role.

[0037] More specifically, Figure 4 As shown, in this embodiment, the port of the first flow channel portion 201 passing through the mating surface F is coaxially arranged and connected with the port of the flow hole portion 1016 passing through the connecting surface E, and the port of the second flow channel portion 202 passing through the mating surface F is coaxially arranged and connected with the port of the valve hole portion 1014 passing through the connecting surface E.

[0038] More specifically, Figure 4 As shown, in this embodiment, the valve hole portion 1014 includes a first hole section 1014a and a second hole section 1014b, the aperture of the second hole section 1014b is larger than the aperture of the first hole section 1014a, one end of the first hole section 1014a is connected to one end of the second hole section 1014b, the other end of the first hole section 1014a passes through the first mating plane C, and the other end of the second hole section 1014b passes through the connecting surface E, the port of the second hole section 1014b passing through the connecting surface E is coaxially arranged and connected with the port of the second flow channel portion 202 passing through the mating surface F, the port of the second hole section 1014b passing through the connecting surface E is coaxially arranged with the valve shaft 103, and the ports of the first hole section 1014a and the second hole section passing through the connecting surface E are eccentrically arranged.

[0039] like Figure 2 and Figure 4As shown, the flow control valve also includes a coil assembly 400. The coil assembly 400 includes a coil 404 and a housing 401, with the coil 404 located within the housing 401. When the coil 404 is energized, it generates a rotating magnetic field, which drives the rotor 104 of the valve seat assembly 100 to rotate axially, thereby driving the second mating plane D of the adjusting member 102 of the valve seat assembly 100 to rotate relative to the first mating plane C of the valve seat body 101. The housing 401 is provided with a socket portion, which is inserted into the valve seat assembly 100 through the socket portion. A third sealing ring 700 is provided between the side surface of the socket portion of the housing 401 and the valve sleeve 109 of the valve seat assembly 100. In this embodiment, the third sealing ring 700 is in sealing contact with the end face of the flange pressure plate 300 away from the valve body 200. The cross-section of the third sealing ring 700 has a radial width that is narrow at both ends and wide in the middle.

[0040] The coil assembly 400 is fixed relative to the valve body 200. Figure 4 As shown, in this embodiment, the coil assembly 400 is connected to the valve body 200 via threaded fasteners. Specifically, the coil assembly 400 includes an orifice plate 402 having two (or more) through-holes for the threaded fasteners to pass through. The valve body 200 has threaded holes aligned with each through-hole. The threaded fasteners pass through the through-holes and are then screwed into the aligned threaded holes. In this embodiment, the orifice plate 402 and the housing 401 of the coil assembly 400 are integrally formed, more specifically, they can be integrally injection molded. Alternatively, the orifice plate 402 and the housing 401 of the coil assembly 400 can be formed separately and then welded to each other. It should be noted that the structure for securing the coil assembly 400 to the valve body 200 is not limited to that shown in this embodiment. For example, the coil assembly 400 can also be clipped to the valve body 200 or clipped to the flange pressure plate 300 connecting the valve body 200 and the valve seat assembly 100. The coil assembly 400 is snap-fitted to the valve body 200 or the flange pressure plate 300. Thus, when the coil assembly 400 needs to change direction, it is only necessary to remove the coil assembly 400 from the flange pressure plate 300 or the valve body 200 and reversing the snap-fit, thereby making the flow control valve highly versatile.

[0041] like Figure 6-Figure 9As shown, in this embodiment, the coil assembly 400 is snap-fitted to the flange pressure plate 300 connecting the valve body 200 and the valve seat assembly 100. Specifically, the flange pressure plate 300 has an inner hole 301. A plurality of grooves 302 (four in the figure, but at least two) are circumferentially spaced apart on the sidewall of the inner hole 301. Each groove 302 is provided with a first latching protrusion 303 protruding inwardly on the sidewall facing away from the inner hole 301. The coil assembly 400 includes multiple hooks 403, each of which is aligned with a groove 302 and at least partially located within the aligned groove 302. Each hook 403 is provided with a second latching protrusion 4031 on the side facing the first latching protrusion 303. After assembly, the second latching protrusion 4031 is located on the side of the first latching protrusion 303 that is closer to the valve body 200. This snap-fit ​​structure is simple to manufacture and highly stable.

[0042] like Figure 8 As shown, in this embodiment, a first guiding slope 303a is provided on the side of the first locking protrusion 303 away from the valve body 200, and a second guiding slope 4031a is provided on the side of the second locking protrusion 4031 close to the valve body 200. The inclinations of the first guiding slope 303a and the second guiding slope 4031a are substantially the same. During assembly, the second guiding slope 4031a slides along the first guiding slope 303a, making it easier for the second locking protrusion 4031 to reach the side of the first locking protrusion 303 close to the valve body 200, making it more convenient to disassemble and assemble the coil assembly 400 and the flange pressure plate 300.

[0043] like Figure 10 and Figure 11 As shown, in this embodiment, the valve seat body 101 includes a main body portion 1011 and a first boss portion 1012 that protrudes from one end surface of the main body portion 1011 away from the valve body 200. The open end of the valve sleeve 109 is interference fit around the outer periphery of the first boss portion 1012. The valve seat body 101 further includes a second boss portion 1013 that protrudes from one end surface of the first boss portion 1012 away from the valve body 200.

[0044] like Figure 11-13 As shown, in this embodiment, a planetary gear transmission assembly, a valve shaft 103, a rotor 104, a shaft sleeve 111, and a spring 112 are disposed within the accommodation space defined by the valve seat body 101 and the valve sleeve 109 of the valve seat assembly 100. The planetary gear transmission assembly includes a sun gear 105, planetary gears 106, a fixed ring gear 107, and a planetary gear carrier 108. The shaft sleeve 111 is positionally connected to the valve sleeve 109. One end of the valve shaft 103 is positionally connected or fixedly connected to the shaft sleeve 111. The other end of the valve shaft 103 passes through the center hole of the sun gear 105 and the center hole of the adjusting member 102, and then is positionally connected or fixedly connected to the valve seat body 101.

[0045] More specifically, Figure 11As shown, in this embodiment, the sun gear 105 includes a flange portion 105a, a toothed portion 105b, and a sleeve portion 105c. The flange portion 105a, the toothed portion 105b, and the sleeve portion 105c can be an integral structure, or the toothed portion 105b can be a separate gear structure. Along the axial direction of the sun gear 105, the flange portion 105a is located between the toothed portion 105b and the sleeve portion 105c. The toothed portion 105b is located at the center of the planetary gears 106. Along the radial direction of the sun gear 105, the flange portion 105a protrudes from at least a portion of the outer circumferential surface of the sleeve portion 105c. An axial end surface of the rotor 104 is positioned relative to the flange portion 105a of the sun gear 105. The rotor 104 partially sleeves on the outer circumferential surface of the sleeve portion 105c. The rotor 104 and the sleeve portion 105c are in positional connection, allowing the rotor 104 to drive the sleeve portion 105c to rotate. Furthermore, by providing a spring 112 to pre-compress between the sleeve 111 and the rotor 104, the rotor 104 drives the axial end face of the sun gear 105 to abut the end face of the adjusting member 102. Alternatively, a gasket 115 is provided between the axial end face of the sun gear 105 and the end face of the adjusting member 102. As a result, the second mating plane D of the adjusting member 102 and the first mating plane C of the valve seat body 101 are more closely fitted to achieve a seal, thereby reducing fluid leakage between the first mating plane C and the second mating plane D. In a specific implementation, the gasket 115 abuts the axial end face of the sun gear 105 and the end face of the adjusting member 102, respectively, reducing or preventing wear on the sun gear 105 and the adjusting member 102.

[0046] The sun gear 105 is connected to the rotor 104 and can rotate coaxially with the rotor 104. In the figure, a portion of the rotor 104 is interference-fitted onto the outer circumferential surface of the sleeve portion 105c of the sun gear 105, or the outer circumferential surface of the sleeve portion is a non-rotating curved surface, which facilitates the synchronous rotation of the rotor 104 and the sun gear 105. The planetary gears 106 are meshed with the sun gear 105 and also meshed with the fixed ring gear 107. The planetary gear carrier 108 includes a planetary gear shaft 1084, and the planetary gears 106 are sleeved outside the planetary gear shaft 1084. The fixed ring gear 107 is connected to the valve seat body 101. The planetary gear carrier 108 is connected to the adjustment member 102.

[0047] During operation, the rotation of the rotor 104 drives the sun gear 105, which in turn drives the planetary gears 106 to rotate while simultaneously revolving around the valve shaft 103. This in turn drives the planetary gear carrier 108 to rotate around the valve shaft 103, which in turn drives the adjusting member 102 to rotate around the valve shaft 103, thereby causing the second mating surface D of the adjusting member 102 to rotate relative to the first mating surface C of the valve seat body 101, thereby achieving flow regulation. It should be noted that the transmission structure between the rotor 104 and the adjusting member 102 is not limited to the illustrated embodiment; any transmission structure that allows the adjusting member 102 to rotate coaxially with the rotor 104 may be used.

[0048] like Figure 11 As shown, in this embodiment, the fixed gear ring 107 is secured to the valve seat body 101 via a connecting sleeve 110. Specifically, one end of the connecting sleeve 110 is interference fit over the outer periphery of the second boss portion 1013 of the valve body 200, while the other end of the connecting sleeve 110 is interference fit over the outer periphery of the fixed gear ring 107 and is provided with an inwardly folded flange portion 110a. The flange portion 110a is riveted to the stepped surface on the outer periphery of the fixed gear ring 107 (it can also be riveted to the end face of the fixed gear ring 107 away from the valve body 200). This connection structure ensures good relative positional stability between the fixed gear ring 107 and the valve seat body 101, further improving flow regulation accuracy.

[0049] like Figure 13 As shown, in this embodiment, the planetary gear carrier 108 includes a disc-shaped body 1081, which is sleeved over the valve shaft 103. A boss 1082 and a planetary gear shaft 1084 are provided on the end surface of the disc-shaped body 1081 near the adjusting member 102. The adjusting member 102 includes a plate-shaped body 1021, which is provided with a first connection hole 1021a and a second connection hole 1021b. A protrusion 1022 is provided on the end of the plate-shaped body 1021 away from the planetary gear carrier 108. The second mating plane D is located on the end surface of the protrusion 1022 away from the plate-shaped body 1021. One end of the boss 1082 away from the disc-shaped body 1081 is limited in the second connecting hole 1021b, and one end of the planetary gear shaft 1084 away from the disc-shaped body 1081 is limited in the first connecting hole 1021a. In this embodiment, the boss 1082 is riveted to the plate-shaped body 1021, and after riveting, a riveted portion 1083 is formed at the end of the boss 1082 away from the disc-shaped body 1081.

[0050] like Figure 13 and Figure 14As shown, in this embodiment, a limiting portion 1023 is provided on the side of the regulating member 102 proximal to the valve seat body 101. Along the radial direction of the regulating member 102, the limiting portion 1023 protrudes from the outer circumferential surface of the raised portion 1022. A stopper 114 is provided within the connecting sleeve 110. The stopper 114 can be fixedly connected to the connecting sleeve 110, or the stopper 114 can be fixedly connected to the fixed gear ring 107. In this embodiment, the stopper 114 and the fixed gear ring 107 can be fixedly connected via a connecting post 116. At least a portion of the stopper 114 is located in the rotational path of the limiting portion 1023. Along the axial direction of the flow control valve, the axial height of the limiting portion 1023 at least partially overlaps the axial height of the stopper 114. The limiting portion 1023 and the stopper 114 cooperate to limit the rotational limit of the regulating member 102 relative to the valve seat body 101. When the adjusting member 102 rotates clockwise to the limit position, the limiting portion 1023 contacts one side of the stop portion 114 . When the adjusting member 102 rotates counterclockwise to the limit position, the limiting portion 1023 contacts the other side of the stop portion 114 .

[0051] The principles and implementation methods of the present application have been described above using specific examples. The description of the above embodiments is only intended to help understand the method and core concept of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, various improvements and modifications may be made to the present application, and such improvements and modifications also fall within the scope of protection of the present application.

Claims

1. A valve seat assembly, characterized in that: The valve seat assembly (100) includes a valve seat body (101) and an adjusting member (102), wherein the valve seat body (101) has a first mating plane (C) and a connecting surface (E) for connecting with the valve body (200), and the valve seat body (101) is provided with a flow hole portion (1016) and a valve hole portion (1014) and a flow regulating portion (1015) that are connected, wherein one end of the valve hole portion (1014) and the flow hole portion (1016) passes through the connecting surface (E), and the valve The other end of the hole portion (1014) passes through the first mating plane (C), and the adjusting member (102) has a second mating plane (D), and the second mating plane (D) and the first mating plane (C) are sealed and fitted together. The adjusting member (102) can connect the valve hole portion (1014) and the flow hole portion (1016), and the first mating plane (C) and the second mating plane (D) can rotate relative to each other to adjust the flow cross-sectional area of ​​the flow regulating portion (1015).

2. The valve seat assembly according to claim 1, characterized in that: The valve seat body (101) has a side wall surface (G), and a mounting groove is provided on the side wall surface (G) so that a sealing ring can be installed in the mounting groove to achieve sealing between the side wall surface (G) and the valve body (200).

3. The valve seat assembly according to claim 1 or 2, characterized in that: The valve hole portion (1014) includes a first hole section (1014a) and a second hole section (1014b), the hole diameter of the second hole section (1014b) is larger than the hole diameter of the first hole section (1014a), one end of the first hole section (1014a) and one end of the second hole section (1014b) are connected, the other end of the first hole section (1014a) passes through the first matching plane (C), and the other end of the second hole section (1014b) passes through the connecting surface (E).

4. The valve seat assembly according to any one of claims 1 to 3, characterized in that: The valve seat body (101) is provided with a connection hole (I), one end of which passes through the connection surface (E), so that a positioning pin can be installed in the connection hole (I) to achieve positioning of the valve seat body (101) and the valve body (200).

5. The valve seat assembly according to any one of claims 1 to 4, characterized in that: The valve seat assembly (100) comprises a planetary gear transmission component and a connecting sleeve (110), one end of the connecting sleeve (110) is interference-fitted on the outer periphery of the valve seat body (101), and the other end of the connecting sleeve (110) is interference-fitted on the outer periphery of the fixed gear ring (107) of the planetary gear transmission component and is provided with an inwardly bent flange portion (110a), and the flange portion (110a) and the fixed gear ring (107) are riveted; And / or, the adjusting member (102) comprises a plate-shaped body (1021), the plate-shaped body (1021) is provided with a first connecting hole (1021a) and a second connecting hole (1021b), the planetary gear carrier (108) of the planetary gear transmission assembly comprises a disc-shaped body (1081), the disc-shaped body (1081) is provided with a boss (1082) and a planetary gear shaft (1084) on an end surface close to the adjusting member (102), one end of the boss (1082) is limited in the second connecting hole (1021b) of the plate-shaped body (1021), and one end of the planetary gear shaft (1084) is limited in the first connecting hole (1021a) of the plate-shaped body (1021); And / or, the adjusting member (102) further includes a protruding portion (1022) and a limiting portion (1023), wherein along the axial direction of the adjusting member (102), the protruding portion (1022) protrudes from one end of the plate-shaped main body (1021) away from the planetary gear carrier (108), and along the radial direction of the adjusting member (102), the limiting portion (1023) protrudes from the outer peripheral surface of the protruding portion (1022), and a stop portion (114) is provided in the connecting sleeve (110), and the stop portion (114) is fixedly connected to the connecting sleeve (110) and / or the fixed gear ring (107), and when the second mating plane (D) rotates to the limit position relative to the first mating plane (C), the limiting portion (1023) and the stop portion (114) come into contact with each other.

6. A flow control valve, characterized in that: The flow regulating valve comprises a valve body (200) and a valve seat assembly (100) as described in any one of claims 1 to 5, wherein the valve seat assembly (100) and the valve body (200) are connected, and the valve body (200) has a mating surface (F), and the mating surface (F) is connected to the connecting surface (E) of the valve seat body (101), and the valve body (200) is provided with a first flow channel portion (201) and a second flow channel portion (202), one end of the first flow channel portion (201) passes through the mating surface (F) and is communicated with one end of the flow hole portion (1016) passing through the connecting surface (E), the second flow channel portion (202) passes through the mating surface (F) and is communicated with one end of the valve hole portion (1014) passing through the connecting surface (E), the other end of the first flow channel portion (201) is provided with a first interface portion (201a), and the other end of the second flow channel portion (202) is provided with a second interface portion (202a).

7. The flow control valve according to claim 6, characterized in that: The valve seat body (101) has a side wall surface (G), and a mounting groove is provided on the side wall surface (G). The valve body (200) is provided with a mounting hole portion (203), and one end surface of the mounting hole portion (203) forms the matching surface (F). The valve seat body (101) is at least partially located in the mounting hole portion (203), and the side wall surface (G) of the valve seat body (101) is matched with the hole side of the mounting hole portion (203). A first sealing ring (500) is installed in the mounting groove on the side wall surface (G), and the first sealing ring (500) is in sealing contact with the hole side of the mounting hole portion (203).

8. The flow control valve according to claim 6 or 7, characterized in that: The valve hole portion (1014) comprises a first hole section (1014a) and a second hole section (1014b), the hole diameter of the second hole section (1014b) is larger than the hole diameter of the first hole section (1014a), one end of the first hole section (1014a) and one end of the second hole section (1014b) are connected, the other end of the first hole section (1014a) passes through the first matching plane (C), and the other end of the second hole section (1014b) passes through the connecting surface (E); At least one of the connecting surface (E) and the matching surface (F) is provided with a sealing groove, in which a second sealing ring (600) is installed, and the second sealing ring (600) is arranged around the outer periphery of the port of the second flow channel portion (202) passing through the matching surface (F), the second sealing ring (600) is in sealing contact with the connecting surface (E), and the second sealing ring (600) is arranged around the outer periphery of the port of the second hole section (1014b) passing through the connecting surface (E).

9. The flow control valve according to claim 6, characterized in that: The port of the first flow channel portion (201) penetrating the mating surface (F) is coaxially arranged and communicated with the port of the flow hole portion (1016) penetrating the connection surface (E); the port of the second flow channel portion (202) penetrating the mating surface (F) is coaxially arranged and communicated with the port of the valve hole portion (1014) penetrating the connection surface (E); And / or, the flow regulating valve includes a positioning pin (113), the valve seat body (101) is provided with a connecting hole (I), one end of the connecting hole (I) extends through the connecting surface (E), the valve body (200) is provided with a positioning hole (J), one end of the positioning hole (J) extends through the mating surface (F), the positioning hole (J) and the connecting hole (I) are aligned, and the positioning pin (113) is installed in the positioning hole (J) and the connecting hole (I).

10. The flow control valve according to claim 6, characterized in that: The flow regulating valve comprises a flange pressure plate (300), wherein the flange pressure plate (300) is provided with an inner hole portion (301), and the flange pressure plate (300) is sleeved on the outside of the valve seat assembly (100) through the inner hole portion (301), the flange pressure plate (300) and the valve body (200) are fixed, and the valve seat assembly (100) is at least partially pressed between the flange pressure plate (300) and the valve body (200).

11. The flow control valve according to claim 10, characterized in that: The flow regulating valve includes a coil assembly (400), and the coil assembly (400) can drive the second mating plane (D) of the regulating member (102) to rotate relative to the first mating plane (C). The coil assembly (400) includes a shell (401), and the shell (401) is provided with a socket portion. The shell (401) is sleeved on the outside of the valve seat assembly (100) through the socket portion. A third sealing ring (700) is provided between the hole side of the socket portion and the valve seat assembly. The third sealing ring (700) is in sealing contact with the end face of the flange pressure plate (300) away from the valve body (200). The cross section of the third sealing ring (700) is narrow at both ends of the radial width and wide in the middle.

12. The flow control valve according to any one of claims 6 to 11, characterized in that: The flow regulating valve comprises a coil assembly (400), wherein the coil assembly (400) is capable of driving the second mating plane (D) of the regulating member (102) to rotate relative to the first mating plane (C); The coil assembly (400) is clamped to a flange pressure plate (300) connecting the valve body (200) and the valve seat assembly (100); or, The coil assembly (400) and the valve body (200) are snap-connected; or, The coil assembly (400) and the valve body (200) are connected via threaded fasteners.

13. The flow control valve according to claim 12, characterized in that: The flange pressure plate (300) is provided with an inner hole portion (301), and a plurality of groove portions (302) are sequentially arranged along the circumferential direction on the side wall of the inner hole portion (301), and a first latching protrusion (303) protruding into the groove is provided on the groove wall of each groove portion (302) away from the inner hole portion (301). The coil assembly (400) includes a plurality of hooks (403), and each hook (403) is aligned with each groove portion (302) one by one and at least partially located in the aligned groove portion (302). A second latching protrusion (4031) is provided on the side of each hook (403) facing the first latching protrusion (303), and the second latching protrusion (4031) is located on the side of the first latching protrusion (303) close to the valve body (200), thereby realizing the latching connection between the coil assembly (400) and the flange pressure plate (300); Alternatively, the coil assembly (400) includes an orifice plate (402), the orifice plate (402) is provided with at least two through holes, the valve body (200) is provided with a threaded hole aligned with each of the through holes, the threaded fastener passes through the through holes and is threadedly connected to the corresponding threaded hole, and the orifice plate (402) and the shell (401) of the coil assembly (400) are welded and fixed or integrally formed.

14. The flow control valve according to claim 13, characterized in that: A first guiding slope (303a) is provided on a side of the first locking protrusion (303) away from the valve body (200), and a second guiding slope (4031a) is provided on a side of the second locking protrusion (4031) close to the valve body (200). The first guiding slope (303a) and the second guiding slope (4031a) can cooperate to guide the second locking protrusion (4031) to reach the side of the first locking protrusion (303) close to the valve body (200).

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