CN113028093B

CN113028093B - Eccentric valve and application system thereof

Info

Publication number: CN113028093B
Application number: CN202110335556.6A
Authority: CN
Inventors: 金昌道
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2023-06-13
Anticipated expiration: 2041-03-29
Also published as: CN113028093A

Abstract

The application discloses eccentric valve and application system thereof, eccentric valve includes disk seat and case, and the case single face biases the wall of disk seat, and the disk seat is equipped with import, export and protruding wall, and the case rotationally is close to or deviate from the export, and protruding wall is located unilateral or both sides of export, and protruding wall inwards protrudes relative to other wall faces of disk seat, and correspondingly, the core face shape of case towards disk seat export lateral wall face is consistent with the wall face shape of disk seat export side. Therefore, the valve has the advantages of compact structure, reliability, durability, reduced contact surface of the valve core, reduced torsion, convenient use and control, effective avoidance of surface abrasion between the valve core and the valve seat, and prolonged service life.

Description

Eccentric valve and application system thereof

Technical Field

The application relates to a valve, in particular to an eccentric valve convenient to use and an application system thereof.

Background

At present, along with the rapid progress of processing technology, detection technology and intelligent control technology, various new sealing materials are continuously emerging, and ball valve products are widely applied. The ball valve mainly comprises a valve body, valve seats, a ball body, a valve rod and a handle, the main functions of the ball valve are to cut off, distribute and change the flow direction of a medium in a pipeline, a certain torque is applied to the upper end of the valve rod through the handle or other driving devices and is transmitted to the ball body, so that the ball body can freely rotate between the two valve seats, when the flow passage holes of the ball body are aligned with the valve passage holes, the ball valve is in an open state, fluid is unblocked, when the ball body is rotated by 90 degrees, the flow passage holes of the ball body are perpendicular to the valve passage holes, the ball valve is in a closed state, and the ball body is pushed to the valve seat at the outlet end of the valve under the action of fluid pressure, so that the ball body is compressed and ensures sealing.

Under otherwise identical conditions, a ball valve will generally seal more easily when in use with higher pressures, but it should be considered that the valve seat material will withstand the load imparted to it by the ball, as the forces exerted on the ball by the fluid pressure will all be transferred to the valve back seat. In order to maintain the tightness between the ball body and the valve seat, the ball body is tightly matched with the inner wall of the valve seat, when the ball body rotates, the friction force between the surface of the ball body and the inner surface of the valve seat is needed to be overcome, the ball body and the valve seat are continuously worn due to friction caused by relative movement of the surfaces, and for a ball valve with larger size, when the pressure is higher, the operating torque is increased, the pressure distribution of the ball body on the sealing surface of the valve seat is uneven due to larger dead weight, the pressure on the upper half circle of the horizontal plane along the diameter of a channel is smaller, the pressure on the lower half circle is larger, and the valve seat is unevenly worn to leak.

In order to enable the ball valve to have good sealing performance under lower working pressure, a certain pretightening force is needed to be applied between the ball body and the valve seat, if the pretightening force is insufficient, sealing cannot be ensured, and the excessive pretightening force can increase friction torque, increase abrasion and shorten the service life. The ideal method for applying the pretightening force at present is to adopt a ball valve with an elastic valve seat, the elastic valve seat can greatly increase the elastic deformation range of the valve seat, so that the valve seat can keep good sealing performance under low pressure or high pressure, a spring structure is required to be added, and in addition, the ball valve is of a rotary ball valve or a down-pressing ball valve, and the height of the ball valve is increased for saving labor due to larger torsion required by rotation.

Because ball valve is very high to spheroid wearability and precision requirement, generally adopts copper spare or stainless steel spare, and it is comparatively troublesome to make, grinds the interior circle with the valve body through the grinding machine, and the process is complicated, puts forward very high requirement to operating personnel's experience, needs high accuracy operation, and degree of automation is low, and is long in time consuming, and the disability rate is high, can't satisfy the requirement of product uniformity.

Disclosure of Invention

An object of the application is to provide an eccentric valve and application system thereof, its compact structure, reliable durable reduces case contact surface, reduces torsion, and convenient to use and control effectively avoids the surface abrasion between case and the disk seat, increase of service life.

Another object of the present application is to provide an eccentric valve and an application system thereof, which do not need a spring assembly to improve the pretightening force of a valve seat, effectively maintain the tightness through a sheet valve core structure, reduce the height of the valve, reduce the weight of the valve, expand the application range of the eccentric valve, and facilitate the installation.

Another object of the present application is to provide an eccentric valve and an application system thereof, which are suitable for automatic sensing devices, and can control the rotation of a valve core through a small torque force, so as to reduce the driving voltage required by the opening and closing actions of the valve, thereby saving electricity, and being particularly suitable for small movable devices.

Another object of the present application is to provide an eccentric valve and an application system thereof, which do not require complicated mechanical manufacturing steps and devices, do not significantly change the original structure, discard the metal valve core, use plastic manufacturing, do not require grinding by a grinder, perform injection molding, simplify the processing technology, improve the automation degree of the product, improve the yield and consistency of the product, improve the working efficiency, and reduce the related manufacturing cost.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: an eccentric valve comprises a valve seat and a valve core, wherein the valve core is used for single-sided biasing of the wall surface of the valve seat, the valve seat is provided with an inlet, an outlet and a protruding wall, the valve core is rotatably abutted against or deviated from the outlet, the protruding wall is positioned on one side or two sides of the outlet, the protruding wall protrudes inwards relative to other wall surfaces of the valve seat, and accordingly, the shape of the core surface of the valve core facing the side wall surface of the valve seat outlet is consistent with the shape of the wall surface of the side wall surface of the valve seat outlet.

Preferably, the valve seat is provided with a front wall surface and a rear wall surface, the rear wall surface is adjacent to the outlet side, the front wall surface is deviated from the outlet side, two ends of the valve core are provided with a contact end and a free end, the contact end is contacted with the rear wall surface or the front wall surface of the valve seat, the distance from the free end to the center line is smaller than the distance from the contact end to the center line, and when the valve core rotates along the opening direction, the distance between the free end of the valve core and the wall surface of the valve seat is gradually increased.

Preferably, the valve core is provided with a front core surface and a rear core surface, the rear core surface biases the valve seat outlet side wall surface, the shape of the rear core surface is consistent with that of the valve seat rear wall surface, the rear core surface protrudes inwards relative to other wall surfaces of the valve seat, when the eccentric valve is in a closed state, the rear core surface of the valve core is attached to the wall surface of the valve seat outlet side, and when the eccentric valve is in an open state, a gap is formed between the rear core surface of the valve core and the other wall surfaces of the valve seat.

Preferably, the curvatures of the protruding walls are the same or different, so that the protruding walls are regular cambered surfaces or irregular cambered surfaces, the protruding walls are positioned on one side or two sides of the rear wall surface, and the circle center of the protruding walls is deviated from the central line.

Preferably, the valve core comprises a base and a sealing core, the sealing core extends from the base to the outlet side of the valve seat, the front core surface and the rear core surface are respectively arranged on the front side and the rear side of the sealing core, and the curved surface circle centers of the front core surface and the rear core surface are the same or different.

Preferably, the sealing core comprises an inner core and a sealing member, the sealing member surrounds the inner core, the inner core is connected with the substrate, the sealing member is a rubber member, and the inner core is a plastic member.

Preferably, the sealing core is of a sheet-shaped arc-shaped surface structure, and the curved surface shape of the front core surface and the curved surface shape of the rear core surface are concentrically arranged.

Preferably, the material of the sealing member is selected from one of silica gel and PU, EVA, TPU, TPR, TPE, TPEE, HTPR, the inner core and the substrate are integrally injection molded, and the material of the inner core and the substrate is selected from one of ABS plastic, nylon and hard PVC, PP, PE, EEA, EVA, PS, HIPS, AAS, ACS, MBS, AS, BS, PMMA, PA, POM, NORYL, PC, PET, PBT, PPO, PPS, PSF, TPR, TPE, TPU, TPV, TPEE, HTPR, SBR, EPM, EPDM.

Preferably, the eccentric valve further comprises a valve body and a driving device, the valve seat is installed in the valve body, the valve body is provided with an inlet channel and an outlet channel, the inlet channel is communicated with the inlet, the outlet channel is communicated with the outlet, the driving device can drive the valve core to rotate, and the driving device is an electric driving piece or a manual driving piece.

An application system with the eccentric valve.

Drawings

FIG. 1 is a perspective view of an eccentric valve according to an embodiment of the present application;

FIG. 2 is a side view of an eccentric valve according to an embodiment of the present application;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 (closed state) in accordance with an embodiment of the present application;

FIG. 4 is an enlarged view of a portion of FIG. 3 according to an embodiment of the present application;

FIG. 5 is a schematic illustration of an eccentric valve structure (open state) according to an embodiment of the present application;

FIG. 6 is an enlarged partial view of FIG. 5 according to an embodiment of the present application;

FIG. 7 is a first schematic illustration of a valve seat wall according to an embodiment of the present application;

FIG. 8 is a second schematic illustration of a valve seat wall according to an embodiment of the present application;

FIG. 9 is a third schematic illustration of a valve seat wall according to an embodiment of the present application;

fig. 10 is a fourth schematic view of a valve seat wall according to an embodiment of the present application.

In the figure: 1. an eccentric valve; 10. a valve body; 12. a valve seat; 120. a protruding wall; 121. an inlet; 122. an outlet; 123. a front wall surface; 124. a rear wall surface; 13. an inlet channel; 14. an outlet channel; 20. a valve core; 21. a substrate; 22. a seal core; 23. a contact end; 24. a free end; 221. an inner core; 222. a seal; 223. a front core surface; 224. a rear core surface; 30. a driving device; 40. a gap.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

It is noted that, as used in this application, the terms "substantially," "about," and the like are used as terms of a table approximation, not as terms of a table level, and are intended to illustrate inherent deviations in measured or calculated values that would be recognized by one of ordinary skill in the art.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or both elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

As shown in fig. 1 to 6, the eccentric valve 1 comprises a valve seat 12 and a valve core 20, wherein the valve core 20 is biased on one side against the wall surface of the valve seat 12, the valve seat 12 is provided with an inlet 121 and an outlet 122, the valve core 20 is rotatably abutted against or deviated from the outlet 122, the wall surface on the outlet side of the valve seat 12 protrudes inwards relative to other wall surfaces, and accordingly, the shape of the core 20 facing the outlet side wall surface of the valve seat 12 is consistent with the shape of the wall surface on the outlet side of the valve seat 12.

The valve core 20 is provided with a front core surface 223 and a rear core surface 224, the rear core surface 224 biases against the outlet side wall surface of the valve seat 12, the shape of the rear core surface 224 is consistent with the shape of the outlet side wall surface of the valve seat 12, the rear core surface 224 protrudes inwards relative to other wall surfaces of the valve seat 12, when the eccentric valve 1 is in a closed state, the rear core surface 224 of the valve core 20 is attached to the outlet side wall surface of the valve seat 12, and when the eccentric valve 1 is in an open state, a gap 40 is formed between the rear core surface 224 of the valve core 20 and the other wall surfaces of the valve seat 12.

The valve core 20 includes a base 21 and a sealing core 22, the sealing core 22 extends from the base 21 to an outlet side of the valve seat 12, the front core surface 223 and the rear core surface 224 are respectively disposed on a front side and a rear side of the sealing core 22, the front side of the sealing core 22 faces the inlet 121 of the valve seat 12, the rear side of the sealing core 22 faces the outlet 122 of the valve seat 12, and curved centers of the front core surface 223 and the rear core surface 224 are the same or different, wherein the sealing core 22 can be vertically or obliquely attached to the outlet side of the valve seat 12, and if the outlet side wall surface of the valve seat 12 is obliquely or vertically disposed, the sealing core 22 is obliquely or vertically extended to the outlet side wall surface. The front core surface 223 and the rear core surface 224 may be concentrically arranged, and the radians thereof may be the same or different, so long as the shape of the rear core surface 224 is ensured to be consistent with the shape of the outlet sidewall surface of the valve seat 12.

Preferably, in order to improve uniformity of the fluid pressure dispersed by the sealing core 22, the curved shape of the front core surface 223 and the curved shape of the rear core surface 224 are concentrically arranged.

Preferably, the seal core 22 is a sheet-like arcuate surface structure.

The sealing core 22 comprises an inner core 221 and a sealing piece 222, the sealing piece 222 surrounds the inner core 221, the inner core 221 is integrally connected with the base 21, the rear core surface 224 is formed on the rear side surface of the sealing piece 222, the sealing piece 222 is a rubber piece, the rear core surface 224 is elastic, the sealing strength of the sealing core 22 and the outlet side wall surface of the valve seat 12 is improved, the abrasion between the valve core 20 and the surface of the valve seat 12 is reduced, and the service life of the eccentric valve 1 is prolonged.

Wherein the material of the seal 222 is selected from, but not limited to, silicone, PU, EVA, TPU, TPR, TPE, TPEE, HTPR.

The inner core 221 and the substrate 21 may be metal members or non-metal members, such as high-strength ceramics, graphene, carbon nanotubes, or plastic members.

Wherein the inner core 221 and the substrate 21 are integrally injection molded, and the material of the inner core 221 and the substrate 21 is selected from, but not limited to, ABS plastic, nylon, hard PVC, PP, PE, EEA, EVA, PS, HIPS, AAS, ACS, MBS, AS, BS, PMMA, PA, POM, NORYL, PC, PET, PBT, PPO, PPS, PSF, TPR, TPE, TPU, TPV, TPEE, HTPR, SBR, EPM, EPDM. Therefore, through injection molding, complicated mechanical manufacturing steps and devices are not needed, the original structure is not changed greatly, a metal valve core is abandoned, plastic manufacturing is adopted, grinding by a grinding machine is not needed, the processing technology is simplified, the degree of automation of products is improved, the yield and consistency of the products are improved, the working efficiency is improved, and the related manufacturing cost is reduced.

The hardness of the inner core 221 is relatively high, and the sealing member 222 is made of a relatively elastic material, however, the inner core 221 and the sealing member 222 may be integrally formed.

The valve seat 12 is provided with a front wall 123 and a rear wall 124, the rear wall 124 is adjacent to the outlet side, the front wall 123 is deviated from the outlet side, that is, the rear wall 124 is removed, the remaining wall of the valve seat 12 is the front wall 123, the front wall 123 is generally a regular circular arc surface with the center line of the valve seat 12 as the center, or may be an irregularly shaped wall, so long as it is ensured that when the valve core 20 is turned to the front wall 123, a gap 40 is formed between the opposite front wall 123 and the valve core 20, so that the rear core 224 of the valve core 20 can be turned to the front wall 123 from the closely attached rear wall 124 as long as a small torsion force is overcome, when the valve core 20 is turned in the opening direction, one end of the valve core 20 is always in contact with the front wall 123, and the distance between the other end of the valve core 20 and the front wall 123 is gradually increased, therefore, compared with overcoming the whole surface friction force, the required to be overcome by the contact end of the valve core 20, the required to be reduced, the required voltage required to be further, the voltage required to be reduced, and the life of the valve seat is also required to be prevented, and the life of the valve core is also required to be lowered. As under equal specification, the manufacturing cost of the existing valve is 10 yuan/one, the utilization rate is 20 ten thousand times, the whole valve is made of plastic materials, the manufacturing cost is 3 yuan/one, the utilization rate is 100 ten thousand times, and therefore the manufacturing cost is effectively reduced, and the service life is prolonged. In addition, the valve seat 12 pretightening force is improved without a spring assembly, the valve height is reduced while the tightness is effectively maintained through the structure of the flaky valve core 20, the valve weight is reduced, the weight and the height are 1/4 of those of the existing valve with the same specification, the application range of the eccentric valve 1 is enlarged, and the installation is convenient.

In other words, the two ends of the valve core 20 are provided with a contact end 23 and a free end 24, the contact end 23 is in contact with the rear wall surface 124 or the front wall surface 123 of the valve seat 12, the distance from the free end 24 to the center line is smaller than the distance from the contact end 23 to the center line, the free end 24 of the valve core 20 is only attached to one end of the rear wall surface 124 of the valve seat 12 when being closed, once the free end 24 and the wall surface of the valve seat 12 are rotationally deviated, a gap 40 is always formed, the rear core surface 224 connecting the contact end 23 and the free end 24 can be provided as an arc surface structure or an inclined surface structure according to the shape of the rear wall surface 124, wherein the arc surface structure is easier to disperse and resist fluid pressure, and stability and reliability are improved.

In other words, the valve seat 12 is provided with a protruding wall 120, the protruding wall 120 being located on one side or both sides of the outlet 122, the protruding wall 120 protruding slightly inwardly with respect to the other wall faces of the valve seat 12, as shown in fig. 7 to 10.

Wherein the curvatures of the protruding walls 120 are the same or different, so that the protruding walls 120 are regular cambered surfaces or irregular cambered surfaces, and the protruding walls 120 are located on one side or two sides of the rear wall surface 124.

As shown in fig. 7, the protruding wall 120 is an irregular arc surface, the curvatures of the protruding wall 120 are different, the protruding wall 120 is located at the left side of the rear wall surface 124, and the center of the right side wall surface of the rear wall surface 124 and the center of the front wall surface 123 are the same, so as to be connected with each other in the same circle.

As shown in fig. 8, the protruding wall 120 is a regular arc surface, the center O1 of the protruding wall 120 is deviated from the center O, the curvature of the protruding wall 120 is the same as that of other wall surfaces, the protruding wall 120 is located at the left side of the rear wall 124, and the right side wall of the rear wall 124 is the same as that of the front wall 123 and is in contact with the same circle.

As shown in fig. 9, the protruding wall 120 is a regular arc surface, the center O1 of the protruding wall 120 is deviated from the center O, the curvature of the protruding wall 120 is different from that of other wall surfaces, the protruding wall 120 is located at the left side of the rear wall 124, and the right side wall of the rear wall 124 is the same as the center of the front wall 123 and is connected with the same circle.

As shown in fig. 10, the protruding wall 120 is a regular arc surface, the center O1 of the protruding wall 120 is deviated from the center line O, the curvature of the protruding wall 120 is different from that of other wall surfaces, the protruding wall 120 is located at two sides of the rear wall 124, the center of the rear wall 124 is different from that of the front wall 123, and the center of the rear wall 124 is deviated from the center line O.

The configuration of the protruding wall 120 may be adjusted according to the size of the eccentric valve 1 and the manufacturing requirements, including but not limited to the configurations of fig. 7 to 10.

Accordingly, the shape and size of the valve core 20 are adjusted according to the rear wall surface 124 of the valve seat 12, so as to be in sealing fit.

The eccentric valve 1 further comprises a valve body 10, the valve seat 12 is installed in the valve body 10, the valve body 10 is provided with an inlet channel 13 and an outlet channel 14, the inlet channel 13 is communicated with the inlet 121, the outlet channel 14 is communicated with the outlet 122, the base 21 is rotatably installed at the bottom of the valve body 10, and the sealing piece 222 rotates along with the rotation of the base 21.

The eccentric valve 1 further comprises a driving device 30, wherein the driving device 30 is connected to the base 21 to drive the base 21 to rotate, and the driving device 30 is an electric driving member, such as an electric motor, or a manual driving member, such as a handle.

In use, when the driving device 30 applies a certain torque to the valve core 20, so that the sealing core 22 approaches to seal the outlet 122 or deviates from opening the outlet 122, when the eccentric valve 1 is in a closed state, the sealing core 22 is biased to the rear wall 124 of the outlet 122, especially, the fluid pressure increases the compression and sealing of the sealing core 22 to the rear wall 124, as shown in fig. 3, because the sealing core 22 protrudes inwards relative to other walls, when the valve core 20 rotates clockwise, the valve core 20 always contacts with the wall of the valve seat 12 except the contact end 23, the gap 40 between the free end 24 of the valve core 20 and the wall of the valve seat 12 gradually increases, so that the torque force required for rotating the valve core 20 is effectively reduced, the rotation of the valve core 20 is controlled through the smaller torque force, the driving voltage required for opening and closing the valve is reduced, as for a valve with the same specification, the torque force required is only half of the existing valve, and the valve can be driven only by 3V voltage such as a button battery, a 220V power supply is not required, and the small electric power device is particularly suitable for small electric devices.

According to another aspect of the present application, there is provided an application system with the eccentric valve 1, further comprising a sensing module, wherein the sensing module is electrically connected to the driving device 30, and the driving device 30 is automatically controlled to open and close the valve core 20 by the sensing module. The application system is suitable for medical instruments, such as a urination system of a patient, automatically detects urine bags, and automatically opens when a certain amount is reached, and is also suitable for automatic hand washing tanks or toilet bowls to realize automatic water discharge.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims

1. An eccentric valve, comprising a valve seat, a valve core and a driving device, wherein the valve core is biased on one side by the valve core

The valve seat is provided with an inlet, an outlet and a protruding wall, the valve core is rotatably abutted against or deviated from the outlet, the protruding wall is located on one side of the outlet, the protruding wall protrudes inwards relative to other wall faces of the valve seat, accordingly, when the valve core rotates along the opening direction, the core surface shape of the valve core facing the side wall face of the valve seat is consistent with the wall surface shape of the outlet side of the valve seat, the valve seat is provided with a front wall face and a rear wall face, the rear wall face is adjacent to the outlet side, the front wall face is deviated from the outlet side, two ends of the valve core are provided with contact ends and free ends, the contact ends are in contact with the rear wall face or the front wall face of the valve seat, the distance from the free ends to the central line of the valve seat is smaller than the distance from the contact ends to the central line of the valve seat, and when the valve core rotates along the opening direction, the contact ends are always in contact with the wall face of the valve seat, the free ends are in contact with the wall face of the valve seat, the wall face of the valve seat is gradually increased, the distance between the free ends and the wall face of the valve seat is gradually increased, the valve core comprises a base core and a sealing core, the sealing element and the sealing element are integrally formed, the sealing element and the sealing element are in the shape of the same shape, and the sealing element.

2. The eccentric valve of claim 1, wherein the valve core is provided with a front core surface and a rear core surface, the rear core surface is biased against the valve seat outlet side wall surface, the rear core surface is in a shape consistent with the valve seat rear wall surface, the rear core surface protrudes inwards relative to the other valve seat wall surfaces, when the eccentric valve is in a closed state, the rear core surface of the valve core is attached to the valve seat outlet side wall surface, and when the eccentric valve is in an open state, a gap is formed between the rear core surface of the valve core and the other valve seat wall surfaces.

3. The eccentric valve of claim 2, wherein the curvatures of the protruding walls are the same or different, such that the protruding walls are regular or irregular cambered surfaces, the protruding walls are located on one side or both sides of the rear wall surface, and the center of the protruding walls is deviated from the center line.

4. The eccentric valve of claim 3, wherein the front and rear core surfaces are disposed on the front and rear sides of the seal core, respectively, and the curved centers of the front and rear core surfaces are the same or different.

5. The eccentric valve of claim 4, wherein the curved shape of the front core surface and the curved shape of the rear core surface are disposed concentrically.

6. The eccentric valve of claim 5, wherein the material of the seal is selected from one of silicone and PU, EVA, TPU, TPR, TPE, TPEE, HTPR, the inner core and the base are integrally injection molded, and the material of the inner core and the base is selected from one of ABS plastic, nylon, and hard PVC, PP, PE, EEA, EVA, PS, HIPS, AAS, ACS, MBS, AS, BS, PMMA, PA, POM, NORYL, PC, PET, PBT, PPO, PPS, PSF, TPR, TPE, TPU, TPV, TPEE, HTPR, SBR, EPM, EPDM.

7. The eccentric valve according to any one of claims 1-6, further comprising a valve body and a driving device, wherein the valve seat is installed in the valve body, the valve body is provided with an inlet channel and an outlet channel, the inlet channel is communicated with the inlet, and the outlet channel is communicated with the outlet.

8. An application system with an eccentric valve according to any one of claims 1-7.