Control valve

Abstract

The control valve includes a sealing member (4), the sealing member (4) being located between a side wall portion (12) and a valve body member, the sealing member (4) including an integral elastic pad (41) and a sealing part (42), the elastic pad (41) including an outer peripheral wall portion (410) and a protruding portion (414), the elastic pad (41) having a plurality of first through holes (411) and a first recessed groove (412). Further, the protruding portion (414) protrudes from the outer peripheral wall portion (410), the first groove (412) is recessed from the outer peripheral wall portion (410), the protruding portion (414) surrounds each first through hole, the protruding portion (414) abuts against the side wall portion (12), and the valve body member has a rib (123) protruding from the side wall portion (12), and the rib (123) fits into the first groove (412). In this manner, the first grooves (412) of the elastic pad (41) engage with the ribs (23) of the valve body member to position the sealing member (4) within the valve chamber and prevent the sealing member (4) from being displaced when the valve body member rotates. The protruding portions (414) of the elastic pad (41) surround each of the first through holes (411), and the protruding portions (414) abut against the side wall portion (12), thereby improving the sealing reliability between the elastic pad (41) and the side wall portion (12).

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application filed with the China Patent Office on January 18, 2021, bearing application number 202110065261.1 and entitled "Valve Apparatus", the entire contents of which are incorporated herein by reference. The present invention relates to the field of fluid control, and more particularly to fluid control valves. [Background technology]

[0002] Some systems require the use of a multi-passage control valve to control the flow path. For example, automobiles currently generally may be controlled using multiple control valves. In the multi-passage control valve, sealing and a sliding fit with the valve body are realized by a sealing part and an elastic pad having a two-layer separate structure. Summary of the Invention [Problem to be solved by the invention]

[0003] An object of the present invention is to provide a control valve with high sealing reliability. [Means for solving the problem]

[0004] The present invention provides a control valve including a valve body member and a valve element member, a valve chamber, at least a majority of the valve element member being located in the valve chamber, the valve body member including a peripheral wall of the valve chamber or a side wall portion which is at least a part of the peripheral wall, and a communication hole being provided in the valve body member. The control valve includes a sealing member, the sealing member being located between the side wall portion and the valve element member and including an elastic pad and a sealing component, the elastic pad and the sealing component being of an integral structure. the elastic pad is located between the sealing part and a side wall of the valve body member and includes an outer wall and a protruding portion, the elastic pad has a plurality of first through holes and a first groove, the protruding portion protrudes from the outer wall, the first through holes penetrate the outer wall, the first groove is recessed from the outer wall, the protruding portion surrounds each of the first through holes and abuts the side wall, and the valve body member has ribs protruding from the side wall, the ribs fit into the first grooves.

[0005] In this way, the sealing member of the control valve includes an elastic pad and a sealing part having an integral structure, and the first groove of the elastic pad engages with the rib of the valve body member to restrict the position of the sealing member within the valve chamber and prevent the sealing member from being displaced when the valve body member rotates. Furthermore, the protruding portions of the elastic pad surround each of the first through holes and abut against the side wall portions, which improves the sealing reliability between the elastic pad and the side wall portions. [Brief description of the drawings]

[0006] [Figure 1] FIG. 2 is a three-dimensional view of a sealing member of an embodiment of a control valve. [Diagram 2] 2 is a cross-sectional view of the sealing member shown in FIG. [Diagram 3] FIG. 2 is a local cross-sectional view of a valve body member of the control valve. [Figure 4] FIG. 4 is a locally enlarged view of FIG. [Diagram 5] FIG. 13 is a localized three-dimensional view of a sealing member of another embodiment of a control valve. [Figure 6] FIG. 6 is a cross-sectional view of the sealing member shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] Specific embodiments will be described below in conjunction with the drawings. As shown in FIGS. 1 to 4, the control valve includes a valve body 10 and a sealing member 4, includes a valve body member (not shown), and has a valve chamber, and the valve body member is capable of being driven to rotate with at least a majority of it located in the valve chamber. The sealing member 4 includes an elastic pad 41 and a sealing part 42, and the elastic pad 41 and the sealing part 42 are fixed together by adhesion or the like. The valve body member 10 includes a side wall portion 12 and a bottom wall portion 11, which may be integrally molded, and the side wall portion 12 is a peripheral wall of the valve chamber or at least a part of the peripheral wall, and protrudes from the bottom wall portion 11. The valve body member 10 has communication holes, and the number of the communication holes may be multiple, for example, five, but of course the number of the communication holes may be more or less than five. The sealing member 4 is located between the side wall portion 12 and the valve body member, and includes an elastic pad 41 and a sealing component 42. The elastic pad 41 and the sealing part 42 are fixedly connected, the elastic pad 41 is located between the sealing part 42 and the side wall portion 12 of the valve body member 10, the sealing part 42 contacts the valve body member 20, the biasing force between the sealing part 42 and the valve body member includes a sliding friction force, and the biasing force between the elastic pad 41 and the side wall portion 12 is a static friction force. The material of the sealing component 42 is Polytetrafluoroethylene The sealing part 42 not only has a sealing function, but also has a certain lubricating performance and is not easily worn, so that the friction force between the valve body member and the sealing member can be reduced, thereby relatively reducing the driving force of the control valve.

[0008] As shown in Figures 1 and 2, the elastic pad 41 includes an outer peripheral wall portion 410, and the elastic pad 41 has a first through hole 411, a first groove 412 and a second groove 413, the first through hole 411 penetrating the outer peripheral wall portion 410 and communicating with the communicating hole 101, and the first groove 412 and the second groove 413 are recessed into the outer peripheral wall portion 410. The first groove 412 and the second groove 413 have openings facing the side wall portion 12, the first groove 412 may extend from one end of the elastic pad 41 to the other end of the elastic pad 41 in the vertical direction of the elastic pad 41, and there are multiple first grooves 412. In this embodiment, the first grooves 412 are distributed on both sides of the first through holes 411, and the first grooves 412 located between two adjacent first through holes 411 may be located in the middle between the two adjacent first through holes 411. The first groove 412 may be arranged in the axial direction, and the second groove 413 may be arranged in the circumferential direction or may be of other types, and the second groove 413 can leave an expansion space for the elastic pad 41 when the elastic pad 41 is compressed by force. 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 communicates with the second groove 413 .

[0009] As shown in FIG. 3, the valve body member 10 has a rib 123 protruding from the side wall portion 12, and in this embodiment, the rib 123 protrudes from the side wall portion 12 and is located inside the valve chamber.

[0010] The number of the ribs 123 corresponds to the number of the first grooves 412, and the ribs 123 are inserted into the first grooves 412, and the ribs 123 are tightly fitted, loosely fitted, or intermediately fitted with the first grooves 412. By providing the rib 123 and the first groove 412, the positioning and attachment of the sealing member 4 can be achieved, and not only can the positions of the first through hole 411 and the second through hole 421 correspond to the positions of the communicating hole 101 respectively to allow the fluid to flow, but the engagement method between the rib 123 and the first groove 412 acts to restrict the position of the sealing member 4, preventing the sealing member 4 from being displaced when the valve body member is rotated. In this embodiment, the height of the rib 123 protruding from the side wall portion 12 is smaller than the depth of the first groove 412, so that a certain gap can be provided between the rib 123 and the bottom of the first groove 412. In this way, the elastic pad 41 can be abutted against the second side wall 122, and the gap left between the rib 123 and the bottom of the first groove 412 leaves an expansion space for the elastic pad when it generates elastic distortion.

[0011] As shown in FIGS. 3 and 4, the valve body member 10 includes a boss portion 124 that protrudes from the bottom wall portion 11. The boss portion 124 includes a blocking portion 125 and a support portion 126, the blocking portion 125 protruding a certain distance from the support portion 126, and at least a portion of the support portion 126 being located between the rib 123 and the blocking portion 125, such that a position limiting space 127 is formed between the blocking portion 125 and the rib 123. After the sealing member 4 is inserted into the valve body member 10 , one end of the sealing member 4 is accommodated and disposed in the position limiting space 127 , whereby the sealing member 4 abuts against the support portion 126 . The boss portion 124 serves to restrict the position of the end of the sealing member 4, thereby preventing the end of the sealing member 4 from being separated from the valve body member 10.

[0012] The side wall portion 12 includes a first side wall 121 and a second side wall 122 . The distance from the first side wall 121 to the central axis of the valve chamber is greater than the distance from the second side wall 122 to the central axis of the valve chamber, and the valve body member 10 further includes a protrusion 128 . The protrusions 128 are provided on the second side wall 122 protruding in a direction away from the valve chamber, and each of the protrusions 128 is provided in a peripheral region of one of the communication holes 101, and each of the at least two first through holes 101 engages with one of the protrusions 128. For example, in FIG. 3, the two first through holes 101 may be located at the same position along the circumferential direction of the valve chamber, in which case the two first through holes 101 are arranged along the axial direction of the valve chamber, and in this case the two first through holes 101 can each engage with one of the protrusions 128, and the protrusions 128 have two flow paths that correspond to and communicate with the two first through holes 101 respectively.

[0013] As shown in FIG. 2, the sealing component 42 includes a position limiting portion 422 , an engaging portion 423 , a flanging portion 424 , and a connecting portion 425 . The engagement portion 423 is slidably engaged with the valve body member, and the two position limiting portions 422 are respectively located on both sides in the circumferential direction of the sealing part 42, and the position limiting portions 422 have an outward protruding structure or an everted structure, which can further limit the position of both sides of the elastic pad 41 to limit the deformation range of the elastic pad 41 after pressing, and make the position of the second through hole 421 correspond to the position of the first through hole 411. In this embodiment, since there is a position limiting method in which the rib 123 and the first groove 412 engage with each other, the position limiting portion 422 is located on both sides of the elastic pad 41, and the height of the position limiting portion 422 is less than the thickness of both sides of the elastic pad 41, so that the expansion space of the elastic pad 41 can be left.

[0014] A second through hole 421 is formed in the flanging portion 424, and at least a portion of the flanging portion 424 enters into the first through hole 411 and is adhesively fixed to the inner wall of the first through hole 411, thereby connecting the first through hole 411 to the second through hole 421. The height of the flanging portion 424 is smaller than the length of the first through hole 411, thus, when the elastic pad 41 is compressed, the sealing part 42 can be prevented from contacting the second side wall 122, and the elastic pad 41 can have more compression space. In addition, it is possible to prevent some of the elastic pads 41 from coming into contact with the valve body member through the second through holes 421. If the elastic pads 41 come into contact with the valve body member, not only will the frictional force with which the valve body member rotates be increased, but there is also the possibility that the valve body member will become caught due to wear of the elastic pads 41.

[0015] In this embodiment, by providing the flanging portion 424, the contact area between the elastic pad 41 and the sealing part 42 is increased, and the adhesive strength between the elastic pad 41 and the sealing part 42 can be improved. Furthermore, by the flanging portion 424 entering the first through hole 411, a position restriction effect is exerted on the sealing part 42 and the elastic pad 41, and the sealing part 42 and the elastic pad 41 can be prevented from shifting position when the valve body member is rotated.

[0016] The connecting portion 425 is located between the flanging portion 424 and the engaging portion 423, and the connecting portion 425 smoothly connects the flanging portion 424 and the engaging portion 423 together. In this embodiment, the connection portion between the connecting portion 425 and the engaging portion 423 has a diameter that gradually increases in the direction toward the valve body member, and in the process of the valve body member rotating, the connecting portion 425 can provide a cushioning and guiding function, and also contributes to the rotation of the valve body member.

[0017] As shown in FIG. 3, the valve body member 10 includes an engagement portion 111 that protrudes from the bottom wall portion 11 and is located within the valve chamber. The engagement portion 111 includes a notch portion 112 and a rib plate portion 113, and by providing the notch portion 112, impurities in the coolant that has entered the engagement portion 111 can be discharged in a timely manner and the valve body member can be prevented from getting caught. The rib plate portion 113 can improve the strength of the engaging portion 111 and reduce the effect of the notched portion 112 on the strength of the engaging portion 111 . In addition, the height of the engagement portion 111 is equal to or greater than the height of the boss portion 124, thus reducing the frictional force of the valve body member; and at the same time, the boss portion 124 can prevent the sealing member 4 from being separated from the valve body member 10 when the sealing member 4 is subjected to pressure and deformed.

[0018] 3 to 6, in this embodiment, in FIGS. 5 and 6, the elastic pad 41 further includes a plurality of protrusions 414. As shown in FIG. The protruding portion 414 protrudes from the outer circumferential wall portion 410 , the protruding portion 414 surrounds the first through-hole 411 , and the protruding portion 414 abuts against the side wall portion 12 . In this embodiment, the protruding portion 414 includes an axial protruding portion and a circumferential protruding portion. The axial protrusion extends along the axial direction of the elastic pad 41, and the circumferential protrusion extends along the circumferential direction of the elastic pad 41. The multiple axial protrusions and circumferential protrusions are distributed around the circumferential side of the first through hole 411, and multiple axial protrusions 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. Both ends of the circumferential protrusion and the axial protrusion intersect to form an intersection 415, one end of the circumferential protrusion and one end of the multiple axial protrusions intersect to form multiple intersections, and one end of the axial protrusion and one end of the multiple circumferential protrusions intersect to form multiple intersections.

[0019] By providing a plurality of protruding portions 414, multiple sealing is formed, improving the sealing reliability. Furthermore, compared to before the sealing member 4 is attached to the valve body member 10, the opening angle α of the sealing member 4 becomes smaller after the sealing member 4 is attached inside the valve body member 10. In this case, since the elastic pad 41 is thick and has a plurality of first through holes 411, when the opening angle α is changeable, the distortion generated at each point of the elastic pad 41 is not uniform. By providing a plurality of protrusions 414, the sealing reliability can be improved, and this is applicable even when the opening angle α of the sealing member changes, thereby reducing the difficulty of manufacturing the sealing member 4. As described herein, the shape of the sealing member 4 shown in the drawings is the shape in which the sealing member 4 is assembled within the valve body member, and when mounted, the shape can change and the opening angle α changes.

[0020] As described herein, in other embodiments, the sealing member 4 may be divided into a plurality of parts and arranged in the axial or circumferential direction, as required. The axial and circumferential directions are in reference to the way in which the sealing member 4 is mounted within the valve body member.

[0021] It is to be understood that although the present specification has already described the present invention in detail with reference to the above embodiments, those skilled in the art can still make amendments, combinations, or equivalent substitutions to the present invention, and any improvements that do not depart from the spirit and scope of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A control valve including a valve body member and a valve element member, having a valve chamber, at least a portion of the valve element member being located in the valve chamber, the valve body member including a peripheral wall of the valve chamber or a side wall portion which is at least a portion of the peripheral wall, and a communication hole being provided in the valve body member, the control valve includes a sealing member; the sealing member includes an elastic pad and a sealing component located between the side wall portion and the valve body member, The elastic pad and the sealing part are integrally formed, The elastic pad is located between the sealing component and a side wall portion of the valve body member and includes an outer peripheral wall portion and a protruding portion. The elastic pad has a plurality of first through holes and a first groove, The protruding portion protrudes from the outer peripheral wall portion, The first through hole penetrates the outer peripheral wall portion, The first groove is recessed from the outer circumferential wall portion, the protruding portion surrounds each of the first through holes and abuts against the side wall portion, The valve body member has a rib protruding from the side wall portion, The rib fits into the first groove, A control valve, characterized in that a height of the rib protruding from the side wall portion is smaller than a depth of the first groove.

2. The protruding portion includes a plurality of axial protruding portions and a plurality of circumferential protruding portions, and a plurality of the axial protruding portions or a plurality of the circumferential protruding portions are provided between adjacent first through holes, At least one axial protrusion is also provided between the first through hole and the first groove, 2. The control valve according to claim 1, wherein both ends of the circumferential protrusion and the axial protrusion intersect to form an intersection.

3. One end of the circumferential protrusion intersects with one end of each of the axial protrusions to form a plurality of intersecting portions, 3. The control valve according to claim 2, wherein one end of the axially protruding portion intersects with one end of a plurality of the circumferentially protruding portions to form a plurality of the intersecting portions.

4. 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 plural, The first grooves are disposed on both sides of the first through hole, 2. The control valve according to claim 1, wherein the rib has an interference fit, a clearance fit, or an intermediate fit with the first groove.

5. the sealing component is fixed to the elastic pad by adhesion and includes a flanging portion and an engagement portion; The engagement portion faces the valve body member and is slidably engaged with the valve body member, The sealing component has a second through hole, The first through hole and the second through hole communicate with each other in a corresponding manner to the communication hole, The second through hole is formed in the flanging portion, At least a portion of the flanging portion is inserted into the first through hole and is adhesively fixed to an inner wall of the first through hole, 2. The control valve according to claim 1, wherein a height of the flanging portion is smaller than a length of the first through hole.

6. The sealing component includes at least two position limiting portions located on both sides of the sealing component, The position limiting portion has an outward protruding structure or an everted structure, The position limiting portion is located on both sides of the elastic pad, The height of the position limiting portion is smaller than the thickness of both sides of the elastic pad, The sealing component includes a connection portion, the connecting portion is located between the flanging portion and the engaging portion to smoothly connect the flanging portion and the engaging portion, 6. The control valve according to claim 5, wherein a diameter of a port portion communicating with the second through hole, which is formed by a connection portion between the connecting portion and the engaging portion, gradually increases in a direction toward the valve body member.

7. The valve body member includes a bottom wall portion and a boss portion protruding from the bottom wall portion, The boss portion includes a blocking portion and a support portion, The blocking portion protrudes a certain distance from the support portion, The support portion is located between the rib and the bottom wall portion, The rib is connected to the support portion, and a position limiting space is formed between the blocking portion and the rib; One end of the sealing member is accommodated in the position limiting space, The sealing member abuts against the support portion, The valve body member includes an engagement portion protruding from the bottom wall portion, The engagement portion is engaged with the valve body member, A part of the valve member enters into the engagement portion, The engagement portion includes a notch portion and a rib plate portion, 5. The control valve according to claim 4, wherein the height of the engagement portion is equal to or greater than the height of the boss portion.

8. The side wall portion includes a first side wall and a second side wall, a distance from the first side wall to a central axis of the valve chamber is greater than a distance from the second side wall to a central axis of the valve chamber; 5. The control valve according to claim 4, wherein the valve body member further includes at least two protrusions on the second side wall, each of the protrusions being provided at a periphery of one of the communication holes, and each of the at least two communication holes being fitted with one of the protrusions.

9. The elastic pad is made of a rubber material, The valve body member is made of an aluminum material or is formed by injection molding of a plastic material, The valve member is formed by injection molding using a plastic material, The sealing component is formed by processing polytetrafluoroethylene, The elastic pad and the sealing component are fixed by adhesion, 9. The control valve according to claim 1, wherein at least a part of the protrusion of the valve body member is provided in contact with the sealing component.

10. The elastic pad has a second groove, The second groove is located on both upper and lower sides of the elastic pad so as to be provided in a circumferential direction, 10. The control valve according to claim 9, wherein the first groove is connected to the second grooves located on both upper and lower sides.

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