A control valve

Abstract

A control valve includes a sealing component (4) located between a side wall portion (12) and a valve core portion. The sealing component includes an integrally structured elastic pad (41) and a sealing element (42). The elastic pad includes an outer peripheral wall portion (410) and a protrusion (414). The elastic pad has a plurality of first through holes (411) and a first groove (412). The protrusion protrudes from the outer peripheral wall portion, and the first groove is recessed into the outer peripheral wall portion. The protrusion surrounds each of the first through holes and abuts against the side wall portion. The valve body portion has a rib (123) protruding from the side wall portion and extending into the first groove. In this way, the sealing component is located in the valve cavity by the first groove of the elastic pad cooperating with the rib of the valve body portion, preventing the sealing component from shifting when the valve core portion rotates. The protrusion of the elastic pad surrounds each of the first through holes and abuts against the side wall portion, which can improve the sealing reliability between the elastic pad and the side wall portion.

Description

[0001] This application claims priority to Chinese Patent Application No. 202110065261.1, filed on January 18, 2021, entitled "A Control Valve", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of fluid control, and more specifically to a fluid control valve. Background Technology

[0003] Some systems require multi-pass control valves to control flow paths, such as motor vehicles. Currently, multiple control valves are generally used for control. In a multi-pass control valve, a double-layer split structure of sealing element and elastic gasket is used to achieve sealing and sliding fit with valve core. Summary of the Invention

[0004] To provide a control valve with high sealing reliability, the present invention provides the following technical solution:

[0005] A control valve includes a valve body component and a valve core component. The control valve has a valve cavity, with the valve core component located at least substantially within the valve cavity. The valve body component includes a side wall portion, which is the peripheral wall of the valve cavity or at least a portion of the peripheral wall. The valve body component has a communicating hole. The control valve also includes a sealing component located between the side wall portion and the valve core component. The sealing component includes an elastic gasket and a sealing element, which are integrally formed. The elastic gasket is located between the sealing element and the side wall portion of the valve body. The elastic gasket includes an outer peripheral wall portion and a protrusion. The elastic gasket has a plurality of first through holes and a first groove. The protrusion protrudes from the outer peripheral wall portion. The first through holes penetrate the outer peripheral wall portion. The first groove is recessed into the outer peripheral wall portion. The protrusion surrounds each of the first through holes and abuts against the side wall portion. The valve body component has a rib protruding from the side wall portion and extending into the first groove.

[0006] The sealing components of this control valve include an integral elastic pad and a seal. The sealing component is confined within the valve cavity by the first groove of the elastic pad engaging with the rib of the valve body component, preventing the sealing component from shifting when the valve core component rotates. Furthermore, the protrusion of the elastic pad surrounds each first through hole and abuts against the side wall, which can improve the sealing reliability between the elastic pad and the side wall. Attached Figure Description

[0007] Figure 1 A perspective view of a sealing component in one embodiment of a control valve;

[0008] Figure 2 for Figure 1 A cross-sectional schematic diagram of the sealing component shown;

[0009] Figure 3 This is a partial sectional view of the valve body of the control valve.

[0010] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0011] Figure 5 A partial perspective view of the sealing component of another embodiment of the control valve;

[0012] Figure 6 for Figure 5 A cross-sectional view of the sealing component shown. Detailed Implementation

[0013] The technical solutions of specific embodiments are described below with reference to the accompanying drawings, such as... Figures 1 to 4 The control valve includes a valve body 10 and a sealing component 4, as well as a valve core component (not shown in the figure). The control valve also has a valve cavity, with the valve core component located at least partially within the valve cavity, and the valve core component is rotatable under actuation. The sealing component 4 includes an elastic gasket 41 and a sealing element 42, which are fixed together by means of adhesive or the like. The valve body component 10 includes a side wall portion 12 and a bottom wall portion 11, which can be integrally formed. The side wall portion 12 is the peripheral wall of the valve cavity or at least a part of the peripheral wall, and the side wall portion 12 protrudes from the bottom wall portion 11. The valve body component 10 has multiple connecting holes, for example, five connecting holes, or more or less than five connecting holes. The sealing component 4 is located between the side wall portion 12 and the valve core component. The sealing component 40 includes an elastic pad 41 and a sealing element 42, which are fixedly connected. The elastic pad 41 is located between the sealing element 42 and the side wall portion 12 of the valve body component 10. The sealing element 42 is in contact with the valve core component 20. The force between the sealing element 42 and the valve core component includes sliding friction, and the force between the elastic pad 41 and the side wall portion 12 is static friction. The sealing element 42 can be made of Teflon. The sealing element 42 not only provides a sealing function but also has certain lubricating properties and is not easily worn, which can reduce the friction between the valve core component and the sealing component, thereby relatively reducing the driving force of the control valve.

[0014] like Figure 1 and Figure 2As shown, the elastic pad 41 includes an outer peripheral wall portion 410. The elastic pad 41 has a first through hole 411, a first groove 412, and a second groove 413. The first through hole 411 penetrates the outer peripheral wall portion 410 and is connected to the connecting hole 101. The first groove 412 and the second groove 413 are recessed into the outer peripheral wall portion 410. The openings of the first groove 412 and the second groove 413 face the side wall portion 12. The first groove 412 may extend from one end of the elastic pad 41 to the other end in the longitudinal direction of the elastic pad 41. There are multiple first grooves 412. In this embodiment, the first grooves 412 are distributed on both sides of the first through hole 411, and the first groove 412 located between two adjacent first through holes 411 may be located in the middle part between two adjacent first through holes 411. The first groove 412 can be axially arranged, and the second groove 413 can be circumferentially arranged or in other forms. The second groove 413 can provide expansion space for the elastic pad 41 when it is compressed. In this embodiment, the second groove 413 is located on at least one side of the elastic pad 41 in the longitudinal direction, and the first groove 412 and the second groove 413 are in communication.

[0015] like Figure 3 As shown, the valve body component 10 has a rib 123 protruding from the side wall portion 12. In this embodiment, the rib 123 protrudes from the side wall portion 12 and is located inside the valve cavity.

[0016] The number of protruding ribs 123 corresponds to the number of first grooves 412. The protruding ribs 123 extend into the first groove 412, and the protruding ribs 123 and the first groove 412 are either interference-fitted, clearance-fitted, or transition-fitted. By setting the protruding ribs 123 and the first groove 412, not only can the sealing component 4 be positioned and installed, ensuring that the positions of the first through hole 411 and the second through hole 421 correspond to the positions of the connecting hole 101 to facilitate fluid flow, but the way the protruding ribs 123 and the first groove 412 cooperate also serves to limit the sealing component 4, preventing it from shifting when the valve core component rotates. In this embodiment, the height of the protruding rib 123 protruding from the side wall 12 is less than the depth of the first groove 412, allowing a certain gap between the protruding rib 123 and the bottom of the first groove 412. This allows the elastic pad 41 to abut against the second side wall 122, and the gap between the protruding rib 123 and the bottom of the first groove 412 provides expansion space for the elastic pad when it undergoes elastic deformation.

[0017] like Figure 3 and Figure 4As shown, the valve body component 10 also includes a boss portion 124 protruding from the bottom wall portion 11. The boss portion 124 includes a blocking portion 125 and a supporting portion 126. The blocking portion 125 protrudes from the supporting portion 126 by a certain distance. At least a portion of the supporting portion 126 is located between the rib 123 and the blocking portion 125, forming a limiting space 127 between the blocking portion 125 and the rib 123. After the sealing component 4 is installed into the valve body component 10, one end of the sealing component 4 is accommodated in the limiting space 127, and the sealing component 4 abuts against the supporting portion 126. By providing the boss portion 124, the end of the sealing component 4 can be limited, preventing the end of the sealing component 4 from separating from the valve body component 10.

[0018] The sidewall portion 12 includes a first sidewall 121 and a second sidewall 122. The distance of the first sidewall 121 from the central axis of the valve cavity is greater than the distance of the second sidewall 122 from the central axis of the valve cavity. The valve body component 10 also includes a protrusion 128. The protrusion 128 protrudes from the second sidewall 122 in a direction away from the valve cavity. Each protrusion 128 is disposed on the periphery of one of the connecting holes 101. At least two first through holes 101 are respectively fitted with one of the protrusions 128. For example... Figure 3 In the valve cavity, there are two first through holes 101 in the same position along the circumferential direction. At this time, the two first through holes 101 are arranged along the axial direction of the valve cavity. At this time, one of the protrusions 128 can be fitted onto each of the two first through holes 101. The protrusion 128 has two flow channels, and the two flow channels correspond one-to-one with the two first through holes 101 and are connected.

[0019] like Figure 2 As shown, the sealing element 42 includes a limiting part 422, a mating part 423, a flanged part 424, and a connecting part 425. The mating part 423 slides with the valve core component. The two limiting parts 422 are located on both sides of the circumference of the sealing element 42. The limiting parts 422 have an outward protruding structure or an outward-flaring structure, which can further limit the two sides of the elastic pad 41 and limit the deformation range of the elastic pad 41 after compression, so that the position of the second through hole 421 corresponds to the position of the first through hole 411. In this embodiment, due to the limiting method of the rib 123 and the first groove 412, the limiting parts 422 are located on both sides of the elastic pad 41, and the height of the limiting parts 422 is less than or equal to the thickness of the two sides of the elastic pad 41, which can leave room for the expansion of the elastic pad 41.

[0020] The flanged portion 424 has a second through hole 421. At least a portion of the flanged portion 424 extends into the first through hole 411 and is bonded and fixed to the inner wall of the first through hole 411, thereby enabling communication between the first through hole 411 and the second through hole 421. The height of the flanged portion 424 is less than the length of the first through hole 411. This prevents the seal 42 from contacting the second side wall 122 when the elastic pad 41 is compressed, allowing the elastic pad 41 to have more compression space. It also prevents a portion of the elastic pad 41 from passing through the second through hole 421 and contacting the valve core component. If the elastic pad 41 contacts the valve core component, it will not only increase the friction of the valve core component's rotation but may also cause the valve core component to jam due to wear of the elastic pad 41.

[0021] In this embodiment, by providing the flanged portion 424, on the one hand, the contact area between the elastic pad 41 and the seal 42 is increased, which can improve the adhesion between the elastic pad 41 and the seal 42. On the other hand, by extending the flanged portion 424 into the first through hole 411, it can limit the seal 42 and the elastic pad 41, preventing the seal 42 and the elastic pad 41 from being misaligned when the valve core component rotates.

[0022] The connecting part 425 is located between the flanged part 424 and the mating part 423. The connecting part 425 smoothly connects the flanged part 424 and the mating part 423. In this embodiment, the diameter of the connecting part 425 and the mating part 423 gradually increases in the direction towards the valve core component. During the rotation of the valve core component, the connecting part 425 can play a buffering and guiding role, which is also beneficial to the rotation of the valve core component.

[0023] like Figure 3 The valve body component 10 also includes a mating portion 111 protruding from the bottom wall portion 11 and located within the valve cavity. The mating portion 111 includes a notch portion 112 and a rib portion 113. By providing the notch portion 112, impurities in the coolant entering the mating portion 111 can be discharged in a timely manner, preventing the valve core component from jamming. The rib portion 113 can improve the strength of the mating portion 111 and reduce the impact of the notch portion 112 on the strength of the mating portion 111. Furthermore, the height of the mating portion 111 is greater than or equal to the height of the boss portion 124, which can reduce the friction of the valve core component. At the same time, the boss portion 124 can prevent the sealing component 4 from failing to detach from the valve body component 10 when deformed under pressure.

[0024] like Figures 3 to 6 , Figure 5 and Figure 6Another embodiment is shown, in which the elastic pad 41 further includes a plurality of protrusions 414 protruding from the outer peripheral wall portion 410, surrounding the first through hole 411, and abutting against the side wall portion 12. In this embodiment, the protrusions 414 include axial protrusions and circumferential protrusions. The axial protrusions extend axially along the elastic pad 41, and the circumferential protrusions extend circumferentially along the elastic pad 41. The plurality of axial and circumferential protrusions are distributed on the periphery of the first through hole 411, and a plurality of axial or circumferential protrusions are provided between adjacent first through holes. At least one protrusion is also provided between the first through hole 411 and the first groove 412. The two ends of the circumferential protrusion and the axial protrusion intersect to form a cross portion 415. One end of the circumferential protrusion intersects with one end of multiple axial protrusions to form multiple cross portions. One end of the axial protrusion intersects with one end of multiple circumferential protrusions to form multiple cross portions.

[0025] By providing multiple protrusions 414, a multi-layered seal is formed, improving sealing reliability. Simultaneously, compared to before the sealing component 4 is installed into the valve body component 10, the opening angle α of the sealing component 4 becomes smaller after installation. At this point, due to the larger thickness of the elastic gasket 41 and its multiple first through holes 411, the deformation of the elastic gasket 41 is not uniform when the opening angle α changes. By providing multiple protrusions 414, sealing reliability can be improved, and variations in the opening angle α of the sealing component can be applied, reducing the manufacturing difficulty of the sealing component 4. It should be noted that the shape of the sealing component 4 shown in the attached drawings is the shape of the sealing component 4 assembled into the valve body. During installation, its shape can change, therefore the opening angle α will change.

[0026] It should be noted that in other embodiments, the sealing member 4 may be arranged in multiple configurations, either axially or circumferentially, as needed. Axial and circumferential refer to the arrangement of the sealing member 4 within the valve body component.

[0027] It should be noted that although this specification has described the present invention in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify, combine or make equivalent substitutions to the present invention, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A control valve comprising a valve body member and a valve spool member, said control valve having a valve cavity in which said valve spool member is located at least for the most part, said valve body member comprising a side wall portion which is a peripheral wall or at least a part of a peripheral wall of said valve cavity, said valve body member being provided with a communication hole, characterized in that, The control valve further comprises a sealing component between the side wall part and the valve core component, the sealing component comprises an elastic pad and a sealing piece, the elastic pad and the sealing piece are an integral structure, the elastic pad is between the sealing piece and the side wall part of the valve body component, the elastic pad comprises an outer peripheral wall part and a protruding part, the elastic pad has a plurality of first through holes and a first groove, the protruding part protrudes from the outer peripheral wall part, the first through holes pass through the outer peripheral wall part, the first groove is recessed in the outer peripheral wall part, the protruding part surrounds each of the first through holes, the protruding part abuts against the side wall part, the valve body component has a convex rib protruding from the side wall part, the convex rib extends into the first groove, the sealing component has an opening angle, the protruding part comprises a plurality of axial protruding parts and a plurality of circumferential protruding parts, a plurality of the axial protruding parts or a plurality of the circumferential protruding parts are arranged between adjacent first through holes, and the circumferential protruding part intersects with both ends of the axial protruding part to form a crossing part.

2. The control valve according to claim 1, characterized in that At least one axial protruding part is arranged between the first through hole and the first groove.

3. The control valve according to claim 2, characterized in that One end of the circumferential protruding part intersects with one end of a plurality of the axial protruding parts to form a plurality of the crossing parts, and one end of the axial protruding part intersects with one end of a plurality of the circumferential protruding parts to form a plurality of the crossing parts.

4. The control valve of claim 1, wherein The first groove extends from one end of the elastic pad to the other end of the elastic pad in the longitudinal direction of the elastic pad, the number of the first grooves is a plurality, the first grooves are distributed on both sides of the first through holes, and the convex rib is in interference fit, clearance fit or transition fit with the first groove.

5. The control valve of claim 1, wherein The sealing piece and the elastic pad are fixed by adhesion, the sealing piece comprises a flange part and a fitting part, the fitting part faces the valve core component, the fitting part is in sliding fit with the valve core component, the sealing piece further has a second through hole, the first through hole, the second through hole and the communication hole correspond to and communicate with each other, the flange part forms the second through hole, at least a part of the flange part extends into the first through hole and is fixed with the inner wall of the first through hole by adhesion, and the height of the flange part is less than the length of the first through hole.

6. The control valve according to claim 5, characterized in that The sealing piece comprises at least two limiting parts on both sides of the sealing piece, the limiting parts are outward protruding structures or everted structures, the limiting parts are on both sides of the elastic pad, the height of the limiting parts is less than the thickness of both sides of the elastic pad, the sealing piece further comprises a connecting part between the flange part and the fitting part, the connecting part smoothly connects the flange part and the fitting part, and the diameter of the connecting part gradually increases in the direction facing the valve core component at the connecting part of the fitting part.

7. The control valve of claim 4, wherein The valve body component comprises a bottom wall part, a boss part protruding from the bottom wall part, the boss part comprises a blocking part and a supporting part, the blocking part protrudes from the supporting part by a distance, the supporting part is located between the convex rib and the bottom wall part, the convex rib is connected with the supporting part, a limiting space is formed between the blocking part and the convex rib, one end of the sealing part is accommodated in the limiting space, and the sealing part abuts against the supporting part; the valve body component further comprises a fitting part protruding from the bottom wall part, the fitting part is matched with the valve core component, a part of the valve core component extends into the fitting part, the fitting part comprises a notch part and a rib plate part, and the height of the fitting part is greater than or equal to the height of the boss part.

8. The control valve of claim 4, wherein The side wall part comprises a first side wall and a second side wall, the distance between the first side wall and the center axis of the valve cavity is greater than the distance between the second side wall and the center axis of the valve cavity; the valve body component is further provided with at least two protruding parts on the second side wall, each of the protruding parts is arranged at the peripheral part of one of the communication holes, and at least two first through holes are respectively sleeved with the protruding parts.

9. Control valve according to any one of claims 1 to 8, characterized in that The elastic pad is made of rubber material, the valve body component is made of aluminum material or plastic material by injection molding, the valve core component is made of plastic material by injection molding, the sealing part is made of Teflon, the elastic pad and the sealing part are fixed by adhesion, and at least part of the protruding part of the valve core component is arranged in contact with the sealing part of the valve body component.

10. The control valve according to claim 9, characterized in that The elastic pad has a second groove, the second groove is arranged in a circumferential direction, the second groove is located on the upper and lower sides of the elastic pad, and the first groove is connected with the second grooves on the upper and lower sides.

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