Multi-way valve

Abstract

The utility model provides a multi-way valve, which comprises a valve body, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core and a valve core, and is characterized in that the valve core is provided with a plurality of circulation ports; a communicating opening is formed in the end of the valve element, and the valve element is rotatably arranged in the valve cavity so that the communicating opening can selectively communicate with the circulating opening; the sealing piece is arranged at the end, provided with the communicating opening, of the valve element in a sleeving mode; and the supporting piece is arranged in the circulation opening, and in the process that the valve element rotates and passes through the circulation opening, the side, facing the sealing piece, of the supporting piece abuts against the sealing piece. By means of the technical scheme, the problem that in the switching process of a multi-way valve in the prior art, a sealing piece is prone to overturning towards the interior of a circulation opening can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to control valve technical field, specifically, relate to a multi-way valve. BACKGROUND

[0002] At present, the multi-way valve usually includes the valve body and the valve core, the side wall of the valve body is provided with a plurality of flow-through ports, the valve core is rotatably arranged in the valve body to communicate with different flow-through ports, and switching of the multi-way valve is realized.

[0003] In the prior art, the port of the valve core matched with the flow-through port is generally sleeved with a sealing element, the sealing element is sealingly matched with the inner wall of the valve body, is used for plugging the gap between the valve core and the flow-through port, and prevents the mixing of high-pressure fluid in the valve body and low-pressure fluid in the valve core. However, in the process of rotating the valve core through the flow-through port, due to the pressure difference between the inside of the valve core and the inside of the valve body, the sealing element will be subjected to an axial deflection force, causing the sealing element to tilt into the flow-through port, causing the sealing element to be stuck in the flow-through port, affecting the rotation of the valve core, or causing the sealing element to be bent or even broken, affecting the internal sealing performance of the multi-way valve. SUMMARY

[0004] The utility model provides a kind of multi-way valve, to solve the problem that sealing element in prior art in switching process is prone to turn over in flow-through port.

[0005] The utility model provides a kind of multi-way valve, and the multi-way valve includes: valve body, the valve body includes body and end cap, body and end cap are matched to form valve cavity, and end cap is provided with a plurality of flow-through ports;Valve core, the end of valve core has communication port, and valve core is rotatably arranged in valve cavity so that communication port is selectively communicated with flow-through port;Sealing element, sealing element is sleeved in the one end of valve core with communication port;Supporting element is set in flow-through port, in the process of rotating and passing through flow-through port of valve core, the side of supporting element towards sealing element and sealing element abut.

[0006] Further, the side of supporting element towards sealing element and the side of end cap towards sealing element are flush.

[0007] Further, in the process of rotating and passing through flow-through port of valve core, sealing element has oppositely arranged overhanging section and sealing section, sealing section and end cap abut, and overhanging section always abuts with supporting element.

[0008] Further, the supporting element includes supporting rod, and the two ends of the supporting rod are fixedly connected with the inner wall of flow-through port.

[0009] Further, the supporting rod is provided with a plurality of supporting rods, and the plurality of supporting rods are arranged at intervals.

[0010] Further, the supporting rod is provided with a plurality of supporting rods, and at least two supporting rods are crossed.

[0011] Further, the support rods are provided in plurality, and the plurality of support rods are crossed with each other, and the included angle formed by any two crossed support rods in the extension direction of the end cover is equal.

[0012] Further, the connection between the support rod and the inner wall of the flow passage is circularly arc transitioned.

[0013] Further, the connection between the adjacent two support rods is circularly arc transitioned.

[0014] Further, the support member has a flow structure for communicating with the communication port.

[0015] Further, the support member is integrally formed with the end cover.

[0016] Further, the body is provided with a first communication port and a second communication port, the plurality of flow passages include a third communication port and a fourth communication port, the valve core has a valve core cavity, one end of the valve core cavity communicates with the second communication port, and the other end of the valve core cavity communicates with the third communication port or the fourth communication port, in the case that the valve core cavity communicates with the third communication port, the valve core cavity, the second communication port and the third communication port form a first flow channel, and the valve cavity, the first communication port and the fourth communication port communicate and form a second flow channel spaced from the first flow channel; in the case that the valve core cavity communicates with the fourth communication port, the valve core cavity, the second communication port and the fourth communication port form a first flow channel, and the valve cavity, the first communication port and the third communication port communicate and form a second flow channel spaced from the first flow channel, the first flow channel is used for flowing low-pressure fluid, and the second flow channel is used for flowing high-pressure fluid.

[0017] Through the technical scheme of the present application, the support member is arranged at the port on the side where the flow passage cooperates with the sealing member, so that the support member can support the sealing member during the rotation of the valve core and passing through the flow passage, even if the sealing member is subjected to the action force of deflection, the support member can also stop the sealing member, prevent the sealing member from turning inward into the flow passage, ensure that the sealing member will not enter the flow passage, reduce the risk of the sealing member being stuck, prevent the sealing member from being bent or even broken due to the continuous rotation of the valve core, ensure the sealing performance of the sealing member, and reduce the internal leakage of the multi-way valve. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the present application. The use of the same reference numerals in different drawings indicates similar or identical components. In the drawings:

[0019] Figure 1 An exploded view of the multi-way valve provided by the present application is shown;

[0020] Figure 2 A sectional view of the multi-way valve provided by the present application is shown;

[0021] Figure 3 A structure schematic view of the end cover is shown;

[0022] Figure 4 A structure schematic view of the multi-way valve from one perspective is shown;

[0023] Figure 5 Another structure schematic view of the multi-way valve from another perspective is shown;

[0024] Figure 6 A schematic view of the sealing member and the flow-through port forming a fulcrum shaft in the prior art is shown;

[0025] Figure 7 A schematic view of one state when the sealing member cooperates with the supporting member is shown;

[0026] Figure 8 A schematic view of another state when the sealing member cooperates with the supporting member is shown;

[0027] Figure 9 A schematic view of another state when the sealing member cooperates with the supporting member is shown;

[0028] Figure 10 A structure schematic view of the multi-way valve from one perspective is shown; Figure 2 A local enlarged view of A in the structure schematic view of the multi-way valve is shown.

[0029] Among the above drawings, the following reference signs are included:

[0030] 01, fulcrum shaft;

[0031] 100, valve body; 110, body; 120, end cover; 121, flow-through port; 121D, first flow-through port; 121S, second flow-through port; 121E, third flow-through port; 121C, fourth flow-through port;

[0032] 200, valve core; 210, communication port;

[0033] 300, sealing member; 310, sealing ring; 320, elastic member;

[0034] 400, supporting rod. DETAILED DESCRIPTION

[0035] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative in nature and is in no way limiting on the present application and its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0036] As shown in Figures 1 to 3 The present application provides a multi-way valve, which comprises a valve body 100, a valve core 200, a sealing member 300 and a support. The valve body 100 comprises a body 110 and an end cover 120, the body 110 and the end cover 120 cooperate to form a valve cavity, and the end cover 120 is provided with a plurality of flow-through ports 121. The valve core 200 has a communication port 210 at one end, and the valve core 200 is rotatably arranged in the valve cavity so that the communication port 210 can selectively communicate with the flow-through port 121. The sealing member 300 is sleeved on the end of the valve core 200 with the communication port 210. The support is arranged in the flow-through port 121, and during the rotation of the valve core 200 through the flow-through port 121, the side of the support facing the sealing member 300 abuts against the sealing member.

[0037] As shown in Figure 4 And Figure 5 The body 110 is provided with a first communication port 121D and a second communication port 121S, the plurality of flow-through ports 121 comprise a third communication port 121E and a fourth communication port 121C, the valve core 200 has a valve core cavity, one end of the valve core cavity communicates with the second communication port 121S, and the other end of the valve core cavity communicates with the third communication port 121E or the fourth communication port 121C. In the case that the valve core cavity communicates with the third communication port 121E, the valve core cavity, the second communication port 121S and the third communication port 121E form a first flow channel, and the valve cavity, the first communication port 121D and the fourth communication port 121C communicate and form a second flow channel spaced from the first flow channel. In the case that the valve core cavity communicates with the fourth communication port 121C, the valve core cavity, the second communication port 121S and the fourth communication port 121C form a first flow channel, and the valve cavity, the first communication port 121D and the third communication port 121E communicate and form a second flow channel spaced from the first flow channel. The first flow channel is used for flowing low-pressure fluid, and the second flow channel is used for flowing high-pressure fluid. During the rotation of the valve core 200 described above, the valve core cavity is always filled with low-pressure fluid, the valve cavity is always filled with high-pressure fluid, the sealing member 300 is pressed by the high-pressure fluid and abuts against the end cover 120 to achieve sealing, thereby preventing internal leakage between the valve core 200 and the valve cavity.

[0038] But in the process of rotating the valve core 200, the third flow port 121E or the fourth flow port 121C will be partially communicated with the valve cavity, and the third flow port 121E or the fourth flow port 121C is the low pressure part when the switching process is not completed, and the valve cavity is the high pressure part. Referring to Figure 6 As shown, the support point formed by the sealing element 300 and the edge of the third flow port 121E or the fourth flow port 121C will form a fulcrum shaft 01, and the sealing element 300 on one side of the fulcrum shaft 01 is located in the high-low pressure communication part, and the sealing element on the other side is located in the high pressure part. The sealing element 300 on both sides of the fulcrum shaft 01 will be subjected to different forces, that is, a deflection torque will be applied to the sealing element 300. The sealing element 300 located in the high-low pressure communication part is subjected to high pressure on one side and low pressure on the other side. The sealing element 300 will be subjected to a resultant force towards the low pressure part, that is, the sealing element 300 will generate a force to flip towards the third flow port 121E or the fourth flow port 121C, and flip towards the inside of the third flow port 121E or the fourth flow port 121C.

[0039] Through the technical scheme of the present application, the support element is arranged on the side of the flow port 121 cooperating with the sealing element 300. Thus, when the valve core 200 rotates and passes through the flow port 121, the side of the support element facing the sealing element 300 abuts against the sealing element, so that the support element supports the sealing element 300. Even if the sealing element 300 is subjected to a deflection force, the support element can still stop the sealing element 300, prevent the sealing element 300 from flipping into the flow port 121, and ensure that the sealing element 300 will not enter the flow port, thereby reducing the risk of the sealing element 300 being stuck, preventing the sealing element 300 from continuing to rotate with the valve core 200 and causing bending or even breaking, ensuring the sealing performance of the sealing element 300, and reducing the internal leakage of the multi-way valve.

[0040] Specifically, please refer to Figures 7 to 9 As shown, the sealing element 300 has a suspended section and a sealing section arranged opposite to each other. The projection of the suspended section in the axial direction coincides with the projection of the flow port 121 in the axial direction, and the sealing section abuts against the end cover 120. In the process of rotating the valve core 200 and passing through the flow port 121, the suspended section always abuts against the support element. In this way, it can be ensured that the suspended section can be supported by the support element at any position in the entire process of rotating the valve core 200 and passing through the flow port 121, so as to prevent the sealing element 300 from flipping under the action of the pressure difference.

[0041] In an embodiment of the present application, the support member comprises a support rod 400, both ends of the support rod 400 being fixedly connected with the inner wall of the flow passage 121. The support member formed by the support rod 400 can support the sealing member 300 when the valve core 200 rotates to make the communication passage 210 pass through the flow passage 121, and the sealing member 300 can abut against the surface of the support rod 400, so that the sealing member 300 cannot be turned inward into the flow passage 121, and the stability of the sealing member 300 is ensured.

[0042] In an embodiment of the present application, the support rod 400 can be provided only one, and the support rod 400 can pass through the center of the flow passage 121 to improve the supporting effect on the sealing member 300.

[0043] Further, when the support rod 400 is provided only one and the support rod 400 is linear, the moving track of the center of the sealing member 300 is arc-shaped, and the support rod 400 can be provided parallel to the tangent of the moving track of the center of the sealing member 300.

[0044] In other embodiments of the present application, the support rod 400 can be arc-shaped, and the support rod 400 can coincide with the moving track of the center of the sealing member 300 to ensure the supporting effect of the support rod 400.

[0045] In some feasible embodiments of the present application, the support rod 400 is provided in plurality, and the plurality of support rods 400 are provided at intervals. By providing the support rod 400 in plurality, the supporting area of the support rod 400 on the sealing member 300 can be increased, and the supporting effect of the support member can be improved to prevent the sealing member 300 from turning over.

[0046] When the support rod 400 is provided in plurality, the plurality of support rods 400 can be provided in parallel, or the extension lines of the plurality of support rods 400 can intersect.

[0047] Further, when the support rod 400 is provided in plurality, at least two support rods 400 can be provided intersecting with each other to improve the structural strength of the support member and improve the load bearing performance of the support member.

[0048] It can be understood that the plurality of support rods 400 can be provided perpendicular to each other or at a certain angle, as long as the sealing member 300 can be supported.

[0049] In yet some feasible embodiments of the present application, the support rod 400 is provided in plurality, and the plurality of support rods 400 all intersect with each other, and the included angle formed by any two support rods 400 intersecting with each other in the extension direction of the end cover 120 is equal. In this way, the refrigerant fluid can flow more uniformly when flowing through the flow passage 121, and the influence of the support rod 400 on the fluid flow effect can be reduced.

[0050] In the above-mentioned embodiments of the present application, when the valve core 200 rotates, the support needs to contact the overhanging section at least to form a fulcrum.

[0051] For example, in the embodiment in which two support rods 400 are arranged perpendicularly and cross each other, as shown in FIG. 4, when the valve core 200 starts to rotate, one of the support rods 400 abuts against the sealing member 300 to form a support point; as shown in FIG. 5, the valve core 200 continues to rotate, and the two support rods 400 jointly support the sealing member 300, and the two support rods 400 form three support points for the sealing member 300; as shown in FIG. 6, the valve core 200 continues to rotate, and one of the support rods 400 supports the sealing member 300 to form one support point. Figure 7 Figure 8 Figure 9 During the rotation of the valve core 200, the support is always in contact with the sealing member 300 to form a support for the sealing member 300, thereby preventing the sealing member 300 from being overturned.

[0052] In other embodiments of the present application, the support can also be a mesh structure or the like as long as it can support the sealing member 300.

[0053] Specifically, the support has a flow-through structure for communicating with the communication port 210, so that the support can not hinder the flow of fluid on the premise of supporting the sealing member 300, thereby ensuring the flow-through effect of the four-way valve. When the support is a support rod 400, the interval between the two adjacent support rods 400 forms a flow-through structure, and when the support is a mesh structure, the flow-through structure can be a mesh hole, such as a circular hole or a square hole, etc.

[0054] Specifically, the connection between the support rod 400 and the inner wall of the flow-through port 121 is circularly arc-shaped, which reduces the obstruction to the sealing member 300 caused by the turning of the inner periphery of the flow-through port 121, thereby reducing the wear of the sealing member 300 when passing through the support rod 400 and improving the service life of the multi-way valve.

[0055] Further, the connection between the two support rods 400 connected to each other is circularly arc-shaped, which further reduces the wear of the sealing member 300.

[0056] In the present application, the periphery of the flow-through port 121 matched with the communication port 210 can be provided with a circular arc structure or a chamfer structure, etc., to reduce the wear of the sealing member 300.

[0057] Further, the side of the support towards the sealing member 300 is flush with the side of the end cover 120 towards the sealing member 300, so that such an arrangement can also reduce the wear of the sealing member 300 by the support and reduce the obstruction of the rotation of the sealing member 300 by the support, thereby ensuring the smooth rotation of the valve core 200. ​​

[0058] Specifically, the support can be integrally formed with the end cover 120 to simplify the installation process, such as directly processing the support when milling the end cover 120 to form the flow-through port 121.

[0059] Referring to Figure 10 As shown in the drawings, the sealing member 300 of the present application includes a sealing ring 310 made of PTFE and an elastic member 320 arranged on the side of the sealing ring 310 away from the flow-through port 121, for providing the sealing ring 310 with an elastic force towards the side of the flow-through port 121. The elastic member 320 includes a mounting seat for mounting a plurality of springs. In this way, the elastic force provided by the elastic member 320 to the sealing ring 310 can ensure better sealing between the sealing ring 310 and the end cover 120, and when the sealing ring 310 is worn out, the sealing ring 310 can be compensated by the elastic member 320, so that the sealing ring 310 can always abut against the end cover 120, reducing the risk of internal leakage of the multi-way valve.

[0060] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0061] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the purpose of providing an understanding of the example embodiments. Technical, methods, and apparatuses known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as if the discussion were incorporated herein. In the examples shown and discussed herein, any specific values are to be interpreted as illustrative only and are not to be construed as limiting. Other examples of example embodiments can have different values. It is noted that like references and descriptions set forth herein (throughout the description and in the drawings) are to be construed as referring to like elements, units, sections, or assemblies whenever practical unless a contrary intention is apparent from the context.

[0062] In the description of the utility model, it is understood that the orientation words such as '' front, back, up, down, left, right '' '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the like indicated orientation or positional relationship is usually based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, in the absence of the opposite statement, these orientation words do not indicate and imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the protection scope of the utility model;The orientation words '' inside, outside '' refer to the inside and outside relative to the contour of each component.

[0063] For the convenience of description, spatial relative terms such as '' above'', '' above'', '' upper surface'', '' upper '' and the like can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as '' above '' or '' above '' other devices or structures will be positioned '' below '' or '' below '' other devices or structures. Thus, the exemplary term '' above '' can include both '' above '' and '' below '' orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly.

[0064] In addition, it should be noted that the use of '' first'', '' second '' and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore can not be understood as the limitation of the protection scope of the utility model.

[0065] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, for those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-way valve characterized by comprising: The multi-way valve comprises: a valve body (100) comprising a body (110) and an end cover (120), the body (110) and the end cover (120) cooperating to form a valve cavity, and a plurality of flow-through openings (121) being arranged on the end cover (120); a valve core (200) having a communication opening (210) at one end thereof, the valve core (200) being rotatably arranged in the valve cavity so that the communication opening (210) can selectively communicate with the flow-through openings (121); a sealing member (300) sleeved on one end of the valve core (200) having the communication opening (210); a support member arranged in the flow-through opening (121), the support member abutting against one side of the sealing member (300) during rotation of the valve core (200) through the flow-through opening (121).

2. The multi-way valve according to claim 1, characterized by The one side of the support member towards the sealing member (300) is flush with one side of the end cover (120) towards the sealing member (300).

3. The multi-way valve according to claim 1, wherein During rotation of the valve core (200) through the flow-through opening (121), the sealing member (300) has oppositely arranged overhanging sections and a sealing section, the sealing section abutting against the end cover (120), and the overhanging sections always abutting against the support member.

4. The multi-way valve according to claim 1, characterized by The support member comprises support rods (400), and two ends of each support rod (400) are fixedly connected with the inner wall of the flow-through opening (121).

5. The multiple port valve of claim 4, wherein, A plurality of support rods (400) are arranged.

6. The multiple port valve of claim 4, wherein, At least two support rods (400) are arranged to intersect with each other.

7. The multiple port valve of claim 4 wherein, A plurality of support rods (400) are arranged to intersect with each other, and the included angle formed by any two intersecting support rods (400) in the extension direction of the end cover (120) is equal.

8. The multiple port valve of claim 4, wherein, The connection between the support rod (400) and the inner wall of the flow-through opening (121) is circularly arc-shaped.

9. The multiple-way valve according to claim 6 or 7, characterized in that The connection between the support rods (400) is circularly arc-shaped.

10. The multiple-way valve according to claim 1, characterized in that The support member has a flow-through structure for communicating with the communication opening (210).

11. The multiple-way valve according to claim 1, characterized in that The support member is integrally formed with the end cover (120).

12. The multiple-way valve according to claim 1, characterized in that The body (110) is provided with a first communication port (121D) and a second communication port (121S), a plurality of flow ports (121) include a third communication port (121E) and a fourth communication port (121C), the valve core (200) has a valve core cavity, one end of the valve core cavity communicates with the second communication port (121S), the other end of the valve core cavity communicates with the third communication port (121E) or the fourth communication port (121C), in the case of the valve core cavity communicating with the third communication port (121E), the valve core cavity, the second communication port (121S) and the third communication port (121E) form a first flow channel, the valve cavity, the first communication port (121D) and the fourth communication port (121C) communicate and form a second flow channel spaced from the first flow channel; in the case of the valve core cavity communicating with the fourth communication port (121C), the valve core cavity, the second communication port (121S) and the fourth communication port (121C) form a first flow channel, the valve cavity, the first communication port (121D) and the third communication port (121E) communicate and form a second flow channel spaced from the first flow channel, the first flow channel is used for flowing low-pressure fluid, and the second flow channel is used for flowing high-pressure fluid.

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