CN220688113U - Sealing element, valve device and fluid control system - Google Patents

Abstract

The utility model discloses a sealing element, a valve device and a fluid control system, wherein the valve device comprises a valve body and a valve core, the valve core comprises a plurality of valve core flow channels, the valve body comprises a plurality of valve core flow channels which can be communicated with the valve core flow channels, the valve core can be driven to rotate to change the relative position with the valve body, the valve core flow channels which are communicated with the valve core flow channels are at least partially different at different relative positions, the surface of the valve core is covered and connected with the sealing element, and the sealing element is positioned between the valve core and the valve body and fixedly arranged on the valve core, so that the sealing element rotates along with the valve core when the valve core is driven to rotate. The sealing element is used for the valve device, and the sealing element is arranged on the surface of the valve core and rotates along with the valve core, so that the valve body is matched with the valve body and the working state is switched.

Description

Sealing element, valve device and fluid control system

Technical Field

The utility model relates to the technical field of control valves, in particular to a sealing element, a valve device and a fluid control system.

Background

In the structure of the multi-way valve, the valve core is of a rigid structure and is provided with a plurality of valve core flow channels, a sealing piece matched with the valve core is arranged in the valve body, and the valve core is controlled to rotate relative to the sealing piece in the process of switching the working state of the multi-way valve. The convex ribs are arranged around the valve core flow passage of the multi-way valve and are in rotary fit with the surface of the sealing piece. When the working state of the multi-way valve is switched, the valve core runner of the multi-way valve needs to rotate relative to the sealing element, and the sealing element contacted with the convex rib has temperature difference with the non-contact part and is stressed unevenly (the non-contact part is not stressed), so that the convex rib can cause friction damage to the surface of the sealing element. Therefore, in the process of frequently switching the working state of the multi-way valve, the surface friction damage of the sealing element is larger, the tightness of the multi-way valve is reduced, and the service life of the multi-way valve is influenced.

Disclosure of Invention

The embodiment of the utility model aims to solve the technical problem of providing a sealing element, a valve device and a fluid control system, and solves the problem of tightness between a valve core and a valve body.

In order to solve the above technical problems, the present utility model provides a sealing member for a valve device, the valve device including a valve body and a valve body, the valve body including a plurality of valve body flow passages communicable with the valve body flow passages, the valve body being drivable to rotate to change a relative position to the valve body, the valve body flow passages communicable with the valve body flow passages being at least partially different in different relative positions, a surface of the valve body covering a connecting sealing member, the sealing member being located between the valve body and fixedly provided on the valve body so that the sealing member follows the valve body to rotate when the valve body is driven to rotate.

The sealing piece takes the rotating shaft of the valve core as the center and is arranged along the valve core flow channel to form an arc shape, an annular shape, a fan shape or a round shape.

The seal covers the valve spool surface of the valve spool flow passage at the opening periphery.

Optionally, the seals are disposed on both side surfaces of the spool.

Optionally, the sealing members on two sides form a connection at the valve core flow passage so as to cover the inner wall of the valve core flow passage.

Optionally, a groove is provided on the surface of the valve core, and correspondingly, the sealing member fills and covers the groove.

Optionally, a hollow structure is arranged on the valve core at a position different from the valve core flow channel, and correspondingly, the sealing element fills and seals the hollow structure.

Optionally, a rib is arranged on the surface of the valve core, the height of the rib is not higher than that of the sealing element, and the sealing element covers the rib.

Optionally, the ribs are uniformly distributed on the circumference between the spool flow channels, and the ribs have the same or similar shape as the spool flow channels; and/or the ribs are arranged around the outer edge of the valve core flow passage.

Optionally, the sealing element is formed on the surface of the valve core in a bonding, injection molding or back glue mode;

and/or providing a wear-resistant layer or spraying a wear-resistant material on the outer surface of the seal.

Optionally, the edge of the valve core is provided with a convex rib protruding towards two sides, and the height of the sealing piece is equal to the height of the convex rib.

Optionally, drive teeth are provided on at least part of the circumference of the spool.

Optionally, the spool flow channel includes a first spool flow channel and a second spool flow channel, and a distance between the first spool flow channel and a center of the spool is greater than a distance between the second spool flow channel and the center of the spool.

Optionally, the first valve core flow channel and the second valve core flow channel have different shapes, wherein the first valve core flow channel is arc-shaped, trapezoid-shaped, rectangular or square, and the second valve core flow channel is fan-shaped.

Optionally, the first spool flow channel and the second spool flow channel are arranged in different orientations of the spool, and the first spool flow channel and the second spool flow channel have central angles that are the same or similar in size.

Optionally, the first spool flow channel is symmetrically arranged with respect to a center of the spool; and/or, the second spool flow channel is symmetrically arranged relative to the center of the spool.

The utility model also provides a valve device comprising the sealing element, wherein the valve device is a multi-way valve.

The utility model also provides a fluid control system comprising a plurality of fluid conduits and the valve device, wherein the plurality of fluid conduits are connected to different valve body flow passages of the valve device.

The utility model has the following beneficial effects:

the sealing element is used for the valve device, and the sealing element is arranged on the surface of the valve core and rotates along with the valve core, so that the valve body is matched with the valve body and the working state is switched.

The fluid control system provided by the utility model uses the valve device to control the working state of the fluid channel, and can ensure good sealing performance, so that the working state of the fluid control system is more stable.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application and do not constitute an undue limitation on the application.

FIG. 1 is a schematic illustration of an exploded construction of a valve cartridge and seal connection in an embodiment of the present utility model;

FIG. 2 is a schematic illustration of the overall structure of the valve cartridge and seal connection in an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of the connection of the valve cartridge and the seal in an embodiment of the utility model;

FIG. 4 is a schematic cross-sectional view of a valve cartridge and seal connection in an embodiment of the present utility model;

fig. 5 is a schematic diagram of the assembly of a multi-way valve in an embodiment of the utility model.

Reference numerals in the drawings:

10-upper valve body; 11-valve body flow passage;

21-a seal; 22-valve core; 221-rotating shaft; 222-spool flow channel; 2221—a first spool flow channel; 2222 second spool flow path; 223-ribs; 224-ribs; 225-driving teeth;

30-lower valve body.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, the present utility model provides a valve device comprising an upper valve body 10, a lower valve body 30 and a valve cartridge 22, wherein the upper valve body 10 and the lower valve body 30 are butted to form a valve body, and a valve cavity accommodating the valve cartridge 22 is formed inside, and the valve cartridge 22 is installed in the valve cavity. The valve core 22 comprises a plurality of valve core flow passages, the valve body comprises a plurality of valve body flow passages 11 which can be communicated with the valve core flow passages, the valve core can be driven to rotate to change the relative positions of the valve core and the valve body, at least part of the valve body flow passages 11 which are communicated with the valve core flow passages are different at different relative positions, the surface of the valve core 22 is covered and connected with a sealing piece 21, the sealing piece 21 is positioned between the valve core 22 and the valve body and is fixedly arranged on the valve core, so that when the valve core 22 is driven to rotate, the sealing piece 21 follows the valve core 22 to rotate, and in the rotating process, the valve core 22 and the valve body are sealed through the sealing piece 21, so that fluid is prevented from entering a valve cavity outside the valve body flow passages 11.

According to the valve assembly provided by the utility model, the valve core 22 is in sealing connection with the valve body through the sealing element 21, so that the valve assembly has better sealing performance.

Optionally, a drive gear is also disposed in the valve cavity, which meshes with drive teeth 225 on the spool 22 to drive the spool 22 to rotate about the rotational axis 221.

Wherein: the valve core 22 is circular, a rotating shaft 221 is arranged in the middle, when the valve core 22 is driven to rotate, the valve core 22 can rotate around the rotating shaft 221, the valve core 22 is usually made of metal materials or plastic parts with high hardness, so that the valve core 22 has good rigidity and deformation resistance, a plurality of valve core flow passages 222 are arranged on the valve core 22 around the rotating shaft, when the valve core 22 is driven to rotate around the rotating shaft 221, the valve core flow passages 222 can rotate along with the rotation of the valve core 22, and when the valve core flow passages 222 rotate to specific positions, the valve core flow passages can be communicated with or sealed with corresponding passage openings on the valve body; the sealing member 21 is made of an elastic material, and may be made of rubber, resin, silicone rubber, or the like. The sealing element 21 is arranged along the flow passage of the valve core 22 with the rotating shaft of the valve core 22 as the center to form an arc shape, an annular shape, a fan shape or a circular shape, so that the sealing element keeps sealing contact with the valve body in the process of rotating the valve core 22.

The sealing element 21 can be in sealing connection with the valve body to avoid fluid leakage, the sealing element 21 covers the surface of the valve core 22, and the valve core 22 can be prevented from being in direct contact with fluid, so that the corrosion of the valve core is effectively reduced, and the service life of the valve core 22 is prolonged.

The sealing element provided by the utility model is used for the valve core 22, the sealing element 21 is arranged on the surface of the valve core 22, and the sealing element 21 rotates along with the valve core 22, so that the matching with the valve body and the switching of working states are realized, the sealing effect is better due to the adoption of a surface-to-surface sealing butt joint mode, and the abrasion caused by friction deformation of the sealing element 21 is smaller in the process of rotating the valve core.

Alternatively, as shown in fig. 1-3, the spool flow path 222 includes a first spool flow path 2221 and a second spool flow path 2222, the first spool flow path 2221 being spaced from the center of the spool 22 by a greater distance than the second spool flow path 2222 is spaced from the center of the spool 22. Since the first spool flow path 2221 and the second spool flow path 2222 are not equidistant from the center of the spool 22, more spool flow paths 222 can be provided in different radius areas.

Alternatively, the first spool flow channel 2221 and the second spool flow channel 2222 have different shapes, wherein the first spool flow channel 2221 is arc-shaped as a whole and the second spool flow channel 2222 is fan-shaped. In the implementation, the first spool flow path 2221 may be configured in a trapezoid, rectangle, circle, square, or other shape as needed for implementation, and the second spool flow path 2222 may be configured in a circle, square, arc, or other shape as needed.

Alternatively, the first spool flow path 2221 and the second spool flow path 2222 are arranged in different orientations of the spool 22, and the first spool flow path 2221 and the second spool flow path 2222 have central angles that are the same or similar in size and do not overlap each other in the circumferential direction, so that the spool 22 does not interfere with each other between the different spool flow paths 222 when rotated to different orientations.

Alternatively, the first spool flow passage 2221 is provided in two and is arranged symmetrically with respect to the center of the spool 22; the second spool flow passages 2222 are provided in two, symmetrically arranged with respect to the center of the spool 22.

Optionally, the sealing elements 21 are arranged on two side surfaces of the valve core 22, so that two side surfaces of the valve core 22 are in sealing connection with the valve body through the sealing elements 21, and the two side surfaces of the valve core 22 are protected by the sealing elements 21, thereby effectively reducing corrosion of the valve core 22 and prolonging service life of the valve core 22.

Optionally, the seals 21 on both sides form a connection at the spool flow passage 222 to cover the inner wall of the spool flow passage 222. Thus, the inner wall of the valve core flow passage 222 is not contacted with the fluid, and the valve core 22 of the valve core flow passage 222 is further ensured not to be corroded by the fluid; and when the sealing elements on two sides are connected at the valve core runner 222, the integrity of the sealing element structure on two sides is better, the risk that the sealing element 21 close to the valve core runner 222 is separated from the valve core 22 due to the rotation of the valve core 22 can be effectively reduced, the sealing performance is further ensured, the corrosion is reduced, and the service life of the valve core 22 is prolonged.

Optionally, grooves are formed on the surface of the valve core 22, and correspondingly, the sealing member 21 fills and covers the grooves, so that by the design of the groove structure, the shearing force between the sealing member 21 and the surface of the valve core 22 can be reduced in the rotation process of the valve core 22, and the groove structure bears the shearing force, so that the connection between the sealing member 21 and the valve core 22 is more stable.

Optionally, as shown in fig. 4, a hollowed-out structure is disposed on the spool 22 at a position different from the spool flow channel, and correspondingly, the sealing members 21 on two sides fill and seal the hollowed-out structure. The sealing elements 21 on two sides can be further connected through the hollow positions by being filled with the sealing elements 21 at the positions of the hollow structures, so that the sealing elements 21 on two sides of the valve core 22 are organically connected into a whole, and the sealing elements and the surfaces of the valve core 22 can be firmly connected against larger friction and shearing force.

Optionally, ribs 223 are provided on the surface of the spool 22, the height of the ribs 223 is not higher than the height of the sealing member 21, and the sealing member 21 covers the ribs. The ribs 223 not only can effectively improve the overall strength of the valve core 22 and the deformation resistance thereof, but also can provide support for the sealing element 21, thereby being capable of resisting larger friction force and shearing force and ensuring that the connection between the sealing element and the surface of the valve core 22 is firmer.

Alternatively, the beads 223 are uniformly distributed on the circumference between the spool flow passages 222, and the beads 223 have the same or similar shape as the spool flow passages 222; therefore, the supporting strength of the surface of the whole valve core 22 is better, the supporting effect is higher in all directions, the butt joint between the sealing element 21 and the valve body is tighter, and the sealing performance is better.

The ribs 223 are arranged around the outer edge of the valve core flow passage 222, so that the periphery of the valve core flow passage 222 can be tightly connected with the valve body, and the tightness of connection between the position of the valve core flow passage 222 and the valve body is further improved.

The skilled person can selectively apply the grooves, the hollow structures and the ribs 223 in combination according to the description of the above embodiments, so that the sealing member 21 on both sides has better integrity and better binding force between the sealing member 21 and the surface of the valve core 22 to resist the shearing force.

Optionally, the sealing member 21 is formed on the surface of the valve core 22 by bonding, injection molding or back-gluing, so that the sealing member 21 can be connected to the surface of the valve core 22 without being easily separated, and those skilled in the art can also use other well-known techniques to form the sealing member 21 on the surface of the valve core 22;

optionally, a wear-resistant layer or a wear-resistant material is sprayed on the outer surface of the sealing element 21, so that the wear resistance of the sealing element 21 can be effectively improved, and the service life of the sealing element 21 can be prolonged.

Optionally, the edge of the valve core 22 is provided with a convex rib 224 protruding towards two sides, and the convex rib 224 can provide good supporting strength for the whole valve core 22, so that the deformation resistance of the valve core 22 is improved; the height of the sealing element 21 is equal to the height of the convex rib 224, so that the valve core 22 and the sealing element 21 have good appearance, and the installation of the valve core 22 is convenient.

Optionally, drive teeth 225 are provided on at least a portion of the circumference of the spool 22 so that the spool 22 can be driven to rotate about the rotational axis 221 by gear engagement with the drive teeth 225.

The utility model also provides a fluid control system comprising a plurality of fluid pipes and a multi-way valve, wherein the plurality of fluid pipes are connected to different valve body flow passages 11 of the multi-way valve.

According to the fluid control system provided by the utility model, the working state of the fluid channel is controlled by using the multi-way valve, so that good sealing performance can be ensured, and the working state of the fluid control system is more stable.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A seal for a valve apparatus comprising a valve body and a valve body, the valve body comprising a plurality of valve body flow passages which are connectable to the valve body flow passages, the valve body being drivable in rotation to change relative positions to the valve body, the valve body flow passages being connectable to the valve body flow passages at different relative positions, at least in part, being different, characterised in that the seal is located between the valve body and is fixedly arranged on the valve body such that when the valve body is driven in rotation, the seal follows the valve body in rotation.

2. A seal as claimed in claim 1, wherein: the sealing piece takes the rotating shaft of the valve core as the center and is arranged along the valve core flow channel to form an arc shape, an annular shape, a fan shape or a round shape.

3. A seal as claimed in claim 2, wherein:

the seal covers the valve spool surface of the valve spool flow passage at the opening periphery.

4. A seal as claimed in claim 1, wherein,

the sealing pieces are arranged on two side surfaces of the valve core;

and/or the sealing pieces on two sides are connected at the valve core flow passage so as to cover the inner wall of the valve core flow passage.

5. A seal as claimed in claim 1, wherein,

grooves are formed in the surface of the valve core, and correspondingly, the sealing piece fills and covers the grooves;

and/or, a hollow structure is arranged at a position, different from the valve core flow channel, on the valve core, and correspondingly, the sealing piece is filled and seals the hollow structure;

and/or, a convex rib is arranged on the surface of the valve core, the height of the convex rib is not higher than that of the sealing element, and correspondingly, the sealing element covers the convex rib;

and/or the ribs are uniformly distributed on the circumference between the valve core flow passages, and the ribs have the same or similar shape as the valve core flow passages; and/or the ribs are arranged around the outer edge of the valve core flow passage.

6. A seal as claimed in claim 1, wherein,

the sealing element is formed on the surface of the valve core in a bonding, injection molding or back glue mode;

and/or providing a wear-resistant layer or spraying a wear-resistant material on the outer surface of the seal.

7. A seal as claimed in claim 1, wherein,

the edge of the valve core is provided with convex edges protruding towards two sides, and the height of the sealing piece is equal to the height of the convex edges.

8. A seal as claimed in claim 1, wherein,

the valve core flow channel comprises a first valve core flow channel and a second valve core flow channel, and the distance between the first valve core flow channel and the center of the valve core is larger than that between the second valve core flow channel and the center of the valve core;

and/or the first valve core flow passage and the second valve core flow passage have different shapes, wherein the first valve core flow passage is arc-shaped, trapezoid-shaped, rectangular or square, and the second valve core flow passage is fan-shaped;

and/or the first valve core flow passage and the second valve core flow passage are arranged in different orientations of the valve core, and the first valve core flow passage and the second valve core flow passage have central angles with the same or similar sizes;

and/or, the first spool flow channel is symmetrically arranged relative to the center of the spool; and/or, the second spool flow channel is symmetrically arranged relative to the center of the spool.

9. A valve device comprising a seal as claimed in any one of claims 1 to 8, the valve device being a multi-way valve.

10. A fluid control system comprising a plurality of fluid conduits and said valve apparatus of claim 9, a plurality of said fluid conduits being connected to different valve body flow passages of said valve apparatus.