Sealing gasket mounting structure and multi-way valve

Abstract

The utility model relates to the technical field of valve devices, in particular to a sealing gasket mounting structure and a multi-way valve. The utility model provides a sealing gasket mounting structure which comprises a shell provided with an inner cavity suitable for mounting a valve element; the sealing gasket is arranged on the inner side wall of the shell; wherein the inner side wall of the shell is provided with a groove structure, the sealing gasket is arranged in the groove structure, the side wall of at least one end of the groove structure is provided with a positioning groove, and the end part, corresponding to the positioning groove, of the sealing gasket extends into and is positioned in the positioning groove. The sealing gasket installation structure and the multi-way valve are used for solving the problem that in the prior art, a sealing gasket of a multi-way valve is unstable in positioning.

Description

Technical Field

[0001] The utility model relates to the technical field of valve devices, in particular to a sealing pad installation structure and a multi-way valve. Background Art

[0002] Multi-way valves have a wide range of applications. For example, in the thermal management system of a vehicle, multi-way valves are often used to switch HVAC flow paths and control fluid flow. The sealing of a multi-way valve is an important factor affecting the quality of the multi-way valve.

[0003] A multi-way valve in the prior art includes a housing and a valve core disposed in the housing. A plurality of flow channels are disposed on one side of the housing, and the opening or closing of different flow channels can be realized by rotating the valve core. In order to ensure the sealing performance, a half-wrapped sealing gasket is disposed on the inner side wall of the housing, that is, the sealing gasket is disposed on the side of the inner wall of the housing where the flow channels are disposed, and has a structure that half-wrapped the valve core. The sealing gasket is provided with openings corresponding to the flow channels one by one, and when the valve core is rotated, different flow channels can be switched to be opened or closed.

[0004] In the prior art, in order to facilitate the fixing of the gasket, a positioning rib is usually provided on the inner wall of the housing, the positioning rib protrudes from the inner wall of the housing, and the gasket is fixed to the inner wall of the housing under the action of the positioning rib. However, this positioning structure cannot effectively fix the gasket. When the valve core rotates, if the gasket is unstable, the valve core will squeeze the gasket, which will lead to the gasket sealing failure and the valve core being damaged due to uneven force.

[0005] Therefore, how to solve the problem of unstable positioning of the multi-way valve sealing gasket in the prior art has become an important technical problem to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the utility model provides a sealing gasket installation structure and a multi-way valve, which are used to solve the problem of unstable positioning of the sealing gasket of the multi-way valve in the prior art.

[0007] In a first aspect, the utility model provides a sealing gasket installation structure, comprising:

[0008] The housing is provided with an inner cavity, wherein the inner cavity is suitable for installing the valve core;

[0009] A sealing gasket is arranged on the inner wall of the shell; wherein,

[0010] The inner side wall of the shell is provided with a groove structure, the sealing gasket is arranged in the groove structure, and a positioning groove is provided on the side wall of at least one end of the groove structure, and the end of the sealing gasket corresponding to the positioning groove extends into and is positioned in the positioning groove.

[0011] Beneficial effects:

[0012] The sealing gasket is installed in the groove structure, and at least one end of the groove structure is provided with a positioning groove, and the corresponding ends of the sealing gasket and the positioning groove extend into the positioning groove, thereby realizing reliable positioning of the sealing gasket. In this way, even if the valve core is rotated and the valve core contacts the sealing gasket, since the sealing gasket is reliably positioned in the groove structure, the problem of squeezing the sealing gasket will not occur, thereby avoiding the problem of sealing failure and uneven force on the valve core.

[0013] In an optional embodiment, the positioning grooves are provided on the opposite side walls of the groove structure along the circumference of the inner side wall of the shell, and the two ends of the sealing gasket extend into and are positioned in the two positioning grooves respectively.

[0014] Beneficial effects:

[0015] Positioning grooves are provided on the opposite side walls of the groove structure, and the two ends of the sealing gasket extend into the positioning grooves respectively, so that both ends of the sealing gasket are positioned and installed. When the valve core is rotated, since both ends of the sealing gasket are positioned and installed, the stability of the sealing gasket is further improved. Even if the valve core contacts the sealing gasket, the valve core will not drive the sealing gasket and cause the sealing gasket to be squeezed.

[0016] In an optional embodiment, along the axial direction of the shell, an end of the shell is provided with an opening for the sealing gasket to extend into the groove structure.

[0017] Beneficial effects:

[0018] The end of the shell is provided with an opening of a groove structure for the sealing gasket to extend into. When installing the sealing gasket, the sealing gasket only needs to be inserted into the groove structure from one end of the shell through the opening of the groove structure, and the two ends of the sealing gasket will gradually enter the positioning groove along the positioning groove. This arrangement facilitates the installation of the sealing gasket.

[0019] In an optional embodiment, the thickness of the sealing gasket is greater than the depth of the groove structure.

[0020] In an optional embodiment, along the direction from the opening end to the bottom end of the positioning groove, the distance between the two opposite side walls of the positioning groove gradually decreases.

[0021] In an optional embodiment, the first side wall of the positioning groove is an arc-shaped surface, wherein the first side wall is opposite to the bottom surface of the groove structure; and the portion where the sealing gasket contacts the first side wall is adapted to the shape of the first side wall.

[0022] In an optional embodiment, a plurality of flow channels are provided on one side of the shell, and the plurality of flow channels are provided at the bottom of the groove structure, and the sealing gasket is provided with openings corresponding one to one to the flow channels.

[0023] In an optional embodiment, a positioning protrusion is provided at the bottom of the groove structure, and the sealing gasket is provided with a positioning groove matched with the positioning protrusion.

[0024] In an optional embodiment, the positioning protrusion and the positioning groove are both provided in plurality, and the two are matched with each other in a one-to-one correspondence.

[0025] In a second aspect, the utility model provides a multi-way valve, comprising any of the above-mentioned sealing gasket installation structures. With such an arrangement, the multi-way valve provided by the utility model can solve the problem of unstable positioning of the sealing gasket inside the valve. The derivation process of this beneficial effect is generally similar to the derivation process of the beneficial effect brought about by the above-mentioned sealing gasket installation structure, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic structural diagram of a multi-way valve housing according to an embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the sealing gasket of an embodiment of the utility model;

[0029] Figure 3 It is a structural schematic diagram of a multi-way valve according to an embodiment of the utility model.

[0030] Description of reference numerals:

[0031] 11. Shell; 111. Inner cavity; 112. Groove structure; 113. Positioning groove; 114. Flow channel; 12. Sealing gasket; 13. Valve core. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] In the related art, the multi-way valve includes a housing and a valve core. The valve core is arranged in the inner cavity of the housing. A plurality of flow channels are arranged on the side wall of the housing. By rotating the valve core, the switching on or off of different flow channels can be realized. In order to ensure the sealing performance, a sealing gasket is arranged at the position where the flow channel is arranged on the inner wall of the housing to ensure the sealing performance of each flow channel. The valve core is in contact with the sealing gasket. In order to ensure the stability of the sealing gasket, positioning ribs are usually arranged on the inner wall of the housing in the related art. The positioning ribs can play a certain positioning role for the sealing gasket. However, with this positioning method, the sealing gasket is still unstable. When the valve core is rotated, the valve core will squeeze the sealing gasket, resulting in sealing failure of the sealing gasket or uneven force on the valve core.

[0034] In view of this, if Figures 1 to 3 As shown, the present embodiment provides a sealing gasket installation structure, including a shell 11 and a sealing gasket 12. The shell 11 is provided with an inner cavity 111, and the inner cavity 111 is suitable for installing a valve core 13 of a multi-way valve. In addition, a plurality of flow channels 114 are provided on one side of the shell 11, and each flow channel 114 penetrates the side wall of the shell 11, and the sealing gasket 12 is provided on the inner wall of the shell 11 in an area corresponding to each flow channel 114. The sealing gasket 12 is provided with openings corresponding to the flow channels 114 one by one, and each flow channel 114 is sealed and isolated by the sealing gasket 12. The valve core 13 is installed in the inner cavity 111 of the shell 11 and contacts the sealing gasket 12. When the valve core 13 rotates, different flow channels 114 can be conducted, thereby realizing flow channel switching.

[0035] The inner side wall of the housing 11 is provided with a groove structure 112, the shape of which matches that of the sealing gasket 12, the sealing gasket 12 is arranged in the groove structure 112, and a positioning groove 113 is arranged on the side wall of at least one end of the groove structure 112, the end of the sealing gasket 12 corresponding to the positioning groove 113 extends into and is positioned in the positioning groove 113. The sealing gasket 12 is installed in its entirety in the groove structure 112, and the positioning groove 113 is arranged at the end of the groove structure 112 for the edge of the sealing gasket 12 to extend into, that is, the positioning groove 113 is used to position the edge of the sealing gasket 12.

[0036] With such arrangement, the sealing gasket 12 can be reliably positioned on the inner wall of the shell 11 through the groove structure 112 and the positioning groove 113. Even when the valve core 13 rotates, the sealing gasket 12 will not be driven, and the sealing gasket 12 will not be squeezed, thereby avoiding the problems of sealing failure and unbalanced force on the valve core 13.

[0037] In a further embodiment, positioning grooves 113 are provided on the opposite side walls of the groove structure 112 along the circumferential direction of the inner side wall of the housing 11, and the two ends of the sealing gasket 12 extend into and are positioned in the two positioning grooves 113. It should be noted that the inner cavity 111 of the housing 11 of the multi-way valve is a cylindrical inner cavity 111 so as to be compatible with the cylindrical valve core 13, and the circumferential direction of the inner side wall of the housing 11 is the circumferential direction of the cylindrical inner cavity 111.

[0038] In this embodiment, Figure 3 As shown, the sealing gasket 12 is a semi-wrapped structure, that is, along the circumference of the inner side wall of the shell 11, the inner side wall of the shell 11 is only partially provided with the sealing gasket 12, and the sealing gasket 12 is a non-integral ring structure. A pair of circumferentially opposite side walls of the groove structure 112 are provided with positioning grooves 113. After the sealing gasket 12 is installed inside the groove structure 112, both ends of the sealing gasket 12 corresponding to the pair of positioning grooves 113 extend into the positioning grooves 113. The pair of positioning grooves 113 can respectively position the two opposite circumferential ends of the sealing gasket 12, effectively improving the stability of the sealing gasket 12. In this way, no matter the valve core 13 is rotated counterclockwise or clockwise, the valve core 13 will not drive the sealing gasket 12, thereby avoiding the problems of squeezing the sealing gasket 12 and uneven force on the valve core 13.

[0039] In order to facilitate installation of the sealing gasket 12 , an opening is provided at the end of the housing 11 along the axial direction of the housing 11 for the sealing gasket 12 to extend into the groove structure 112 .

[0040] It should be noted that the axial direction of the shell 11 and the rotation axis direction of the valve core 13 are such that the shell 11 has two ends along the axial direction of the shell 11, and at least one of the two ends is provided with the above-mentioned opening, which connects the external space of the shell 11 with the groove structure 112 inside the shell 11.

[0041] With such a configuration, when installing the sealing gasket 12 , it is only necessary to insert the sealing gasket 12 into the groove structure 112 through the opening, which effectively improves the convenience of installing the sealing gasket 12 .

[0042] In a further embodiment, the thickness of the sealing gasket 12 is greater than the depth of the groove structure 112. After the sealing gasket 12 is installed inside the groove structure 112, since the thickness of the sealing gasket 12 is greater than the depth of the groove structure 112, the upper surface of the sealing gasket 12 will protrude from the groove structure 112, that is, the corresponding surface of the sealing gasket 12 and the valve core 13 protrudes from the groove structure 112.

[0043] In this way, the sealing gasket 12 protrudes from the groove structure 112, so that the valve core 13 can maintain close contact with the sealing gasket 12 to avoid the problem of poor sealing. It should be noted that the sealing gasket 12 usually only needs to slightly protrude from the groove structure 112, and the specific setting can be made according to actual conditions. The protruding height of the sealing gasket 12 is not specifically limited here.

[0044] In order to form a smooth transition between the sealing gasket 12 and the inner wall of the housing 11, the valve core 13 is prevented from squeezing the sealing gasket 12. In a further embodiment, along the direction from the opening end to the bottom end of the positioning groove 113, the distance between the two opposite side walls of the positioning groove 113 gradually decreases.

[0045] It should be noted that the open end of the positioning groove 113 refers to the end close to the groove structure 112, and the bottom end of the positioning groove 113 is the end opposite to the open end. Along the direction from the open end to the bottom end of the positioning groove 113, the distance between the two opposite side walls of the positioning groove 113 gradually decreases, and accordingly, the sealing gasket 12 is also set to a structure adapted to the positioning groove 113. In this way, along the direction from the bottom end to the opening of the positioning groove 113, the end of the sealing gasket 12 can gradually transition to a position flush with the inner wall of the shell 11, and the transition portion between the sealing gasket 12 and the inner wall of the shell 11 is relatively smooth, thereby avoiding the problem of the valve core 13 squeezing the sealing gasket 12 when the valve core 13 rotates. When the positioning groove 113 and the sealing gasket 12 are set to the above structure, the positioning groove 113 can play a good guiding role during the installation of the sealing gasket 12, which facilitates the installation of the sealing gasket 12.

[0046] In a further embodiment, the first side wall of the positioning groove 113 is an arc-shaped surface, wherein the first side wall is opposite to the bottom surface of the groove structure 112; and the contact portion between the sealing gasket 12 and the first side wall is adapted to the shape of the first side wall.

[0047] It should be noted that the first side wall of the positioning groove 113 is set as an arc surface, and the position where the sealing gasket 12 contacts the positioning groove 113 is also set as a matching arc surface. With this setting, the contact area between the two is larger, which can improve the positioning stability of the sealing gasket 12.

[0048] In order to further improve the stability of the sealing gasket 12, a positioning protrusion (not shown) can be provided at the bottom of the groove structure 112, and a positioning groove (not shown) adapted to the positioning protrusion can be provided on the sealing gasket 12. There are multiple positioning protrusions and positioning grooves, and the two are matched one by one.

[0049] In some embodiments, a plurality of positioning protrusions may be distributed in an array at the bottom of the groove structure 112. The positioning protrusions may be cylindrical or hemispherical. The positioning grooves on the sealing gasket 12 correspond one-to-one to the positioning protrusions. When the sealing gasket 12 is installed in place, the positioning grooves on the sealing gasket 12 correspond one-to-one to the positioning protrusions at the bottom of the groove structure 112, thereby forming a further positioning effect on the sealing gasket 12.

[0050] The embodiment of the utility model also provides a multi-way valve, including the sealing gasket installation structure described in any of the above embodiments. Specifically, the multi-way valve provided in this embodiment can be used as a control valve of a thermal management system of a new energy vehicle, and can be used to switch the battery electric drive warm ventilation flow channel circuit in the thermal management system.

[0051] It should be noted that the multi-way valve used for switching the battery electric drive heating and ventilation flow path circuit of the thermal management system of new energy vehicles in the related art has high sealing requirements. The multi-way valve provided in this embodiment has good sealing performance and is suitable for switching the battery electric drive heating and ventilation flow path circuit of the thermal management system of new energy vehicles.

[0052] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A sealing gasket installation structure, characterized in that: include: The housing (11) is provided with an inner cavity (111), wherein the inner cavity (111) is suitable for installing the valve core (13); A sealing gasket (12) is arranged on the inner wall of the housing (11); wherein: The inner side wall of the shell (11) is provided with a groove structure (112), the sealing gasket (12) is arranged in the groove structure (112), and a positioning groove (113) is provided on the side wall of at least one end of the groove structure (112), and the end of the sealing gasket (12) corresponding to the positioning groove (113) extends into and is positioned in the positioning groove (113).

2. The sealing gasket installation structure according to claim 1, characterized in that: The positioning grooves (113) are provided on the opposite side walls of the groove structure (112) along the circumference of the inner side wall of the shell (11), and the two ends of the sealing gasket (12) extend into and are positioned in the two positioning grooves (113) respectively.

3. The sealing gasket installation structure according to claim 2, characterized in that: Along the axial direction of the shell (11), an end portion of the shell (11) is provided with an opening for allowing the sealing gasket (12) to extend into the groove structure (112).

4. The sealing gasket installation structure according to claim 1, characterized in that: The thickness of the sealing gasket (12) is greater than the depth of the groove structure (112).

5. The sealing gasket installation structure according to claim 1, characterized in that: Along the direction from the opening end to the bottom end of the positioning groove (113), the distance between the two opposite side walls of the positioning groove (113) gradually decreases.

6. The sealing gasket installation structure according to claim 5, characterized in that: The first side wall of the positioning groove (113) is an arc-shaped surface, wherein the first side wall is opposite to the bottom surface of the groove structure (112); the portion where the sealing gasket (12) contacts the first side wall is adapted to the shape of the first side wall.

7. The sealing gasket installation structure according to claim 1, characterized in that: A plurality of flow channels (114) are provided on one side of the shell (11), and the plurality of flow channels (114) are provided at the bottom of the groove structure (112), and the sealing gasket (12) is provided with openings corresponding one to one to the flow channels (114).

8. The sealing gasket installation structure according to claim 1, characterized in that: The bottom of the groove structure (112) is provided with a positioning protrusion, and the sealing gasket (12) is provided with a positioning groove matched with the positioning protrusion.

9. The sealing gasket installation structure according to claim 8, characterized in that: The number of the positioning protrusions and the number of the positioning grooves are both multiple, and the two are matched with each other in a one-to-one correspondence.

10. A multi-way valve, characterized in that: It comprises the sealing gasket installation structure according to any one of claims 1 to 9.

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