CN113028093A

CN113028093A - Eccentric valve and application system thereof

Info

Publication number: CN113028093A
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: 2021-06-25
Anticipated expiration: 2041-03-29
Also published as: CN113028093B

Abstract

The application discloses eccentric valve and application system thereof, the eccentric valve includes a valve seat and a valve core, the valve core single side biases the wall of the valve seat, the valve seat is provided with an inlet, an outlet and a protruding wall, the valve core can rotatably abut against or deviate from the outlet, the protruding wall is positioned at one side or two sides of the outlet, the protruding wall protrudes inwards relative to other walls of the valve seat, correspondingly, the shape of the core surface of the valve core facing the side wall surface of the outlet of the valve seat is consistent with the shape of the wall surface at the outlet side of the valve seat. Therefore, the valve core is compact in structure, reliable and durable, reduces the contact surface of the valve core, reduces the torsion, is convenient to use and control, effectively avoids surface abrasion between the valve core and the valve seat, and prolongs the 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, with the rapid advance of processing technology, detection technology and intelligent control technology, various new sealing materials are continuously emerged, and the ball valve is widely applied to ball valve products. The ball valve mainly comprises a valve body, valve seats, a ball body, a valve rod and a handle, wherein the main function of the ball valve is 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, the ball body freely rotates between the two valve seats, when a flow passage hole of the ball body is aligned with a valve passage hole, the ball valve is in an open state and is free to flow, when the ball body rotates 90 degrees, the flow passage hole of the ball body is vertical to the valve passage hole, 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 to.

Under otherwise identical conditions, ball valves are generally easier to seal when in use at higher pressures, but consideration should be given to whether the seat material can withstand the load imparted to it by the ball, since the force generated by the fluid pressure on the ball will be fully transmitted to the valve rear seat. In order to keep the sealing performance 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 needs to be overcome, the ball body and the valve seat continuously generate loss due to friction because of surface relative motion, for a ball valve with a large size, when the pressure is high, the operation torque is increased, the pressure distribution generated on the sealing surface of the valve seat by the ball body due to the large dead weight is uneven, the pressure applied to the upper half circle of a horizontal plane along the diameter of a channel is small, the pressure applied to the lower half circle is large, and.

In order to enable the ball valve to have good sealing performance under lower working pressure, a certain pretightening force needs to be applied between the ball body and the valve seat, if the pretightening force is insufficient, sealing cannot be guaranteed, and the excessive pretightening force can increase friction torque, increase abrasion and shorten service life. The ideal method of applying pretension at present is to use 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 needs to be added, and in addition, the torsion required by rotation is larger, so that the height of the ball valve is increased for labor saving operation no matter the rotary ball valve or the press-down ball valve.

Because the ball valve has high requirements on the wear resistance and precision of the ball body, a copper part or a stainless steel part is generally adopted, the manufacturing is troublesome, the valve body is ground into an inner circle by a grinding machine, the process is complex, the high requirements on the experience of operators are provided, the high-precision operation is required, the automation degree is low, the time consumption is long, the rejection rate is high, and the requirement on the consistency of products cannot be met.

Disclosure of Invention

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

Another object of this application is to provide an eccentric valve and application system thereof, it does not need the pretightning force that spring assembly improves the disk seat, reduces the height of valve when effectively keeping the leakproofness through the lamella case structure, reduces valve weight, enlarges the range of application of eccentric valve, the installation of being convenient for.

Another objective of the present application is to provide an eccentric valve and an application system thereof, which are suitable for an auto-induction device, and can control the rotation of a valve element through a small torque force, thereby reducing the driving voltage required by the opening and closing actions of the valve, saving power, and being particularly suitable for small-sized mobile devices.

Another object of the present application is to provide an eccentric valve and application system thereof, which do not require complicated mechanical manufacturing steps and devices, do not significantly change the original structure, abandon the metal valve core, adopt plastics to make, do not require the grinding machine to polish, and injection molding simplifies the processing technology, improves the degree of automation of the product, improves the product yield and consistency, improves work efficiency, and reduces the related manufacturing cost.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: an eccentric valve comprises a valve seat and a valve core, wherein the valve core is biased to the wall surface of the valve seat on one side, the valve seat is provided with an inlet, an outlet and a protruding wall, the valve core can be abutted against or deviated from the outlet in a rotating mode, 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 correspondingly, the shape of the core surface of the valve core facing the side wall surface of the outlet of the valve seat is consistent with the shape of the wall surface on the outlet side of the valve seat.

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 deviates from the outlet side, two ends of the valve element are provided with contact ends and free ends, the contact ends are in contact with the rear wall surface or the front wall surface of the valve seat, the distance from the free ends to the center line is smaller than the distance from the contact ends to the center line, and when the valve element rotates along the opening direction, the distance between the free ends of the valve element and the wall surface of the valve seat gradually increases.

Preferably, the valve element is provided with a front core surface and a rear core surface, the rear core surface is biased against the wall surface on the outlet side of the valve seat, the shape of the rear core surface is consistent with the shape of the rear wall surface of the valve seat, the rear core surface protrudes inward relative to the other wall surfaces of the valve seat, when the eccentric valve is in a closed state, the rear core surface of the valve element is attached to the wall surface on the outlet side of the valve seat, and when the eccentric valve is in an open state, a gap is formed between the rear core surface of the valve element 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 arcs or irregular arcs, the protruding walls are located on one side or two sides of the rear wall surface, and the centers of the protruding walls are deviated from the center line.

Preferably, the valve element 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 centers of the curved surfaces 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 element, the sealing element surrounds the inner core, the inner core is connected with the substrate, the sealing element is a rubber element, and the inner core is a plastic element.

Preferably, the sealing core is a sheet 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 element is selected from one of silicone rubber, 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, rigid 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 mounted 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 A-A of FIG. 2 (closed state) according to an embodiment of the present application;

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

FIG. 5 is a schematic diagram 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 view of a seat wall according to an embodiment of the present application;

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

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

FIG. 10 is a fourth illustration of a 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 projecting 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. sealing the core; 23. a contact end; 24. a free end; 221. an inner core; 222. a seal member; 223. a front core face; 224. a rear core face; 30. a drive device; 40. a gap.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is 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 elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this 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 expressly listed, but may include other steps or elements not 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 table approximation and not as terms of table degree, and are intended to account for 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 is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected through intervening media. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1 to 6, an eccentric valve 1 is provided, the eccentric valve 1 includes a valve seat 12 and a valve core 20, the valve core 20 is biased to a wall surface of the valve seat 12 on one side, 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, a wall surface on an outlet side of the valve seat 12 is protruded inward relative to other wall surfaces, and accordingly, a shape of a core surface of the valve core 20 facing a side wall surface of the outlet of the valve seat 12 is identical to a shape of a wall surface on an 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 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 the 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 element 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 is a side facing the inlet 121 of the valve seat 12, the rear side of the sealing core 22 is a side facing the outlet 122 of the valve seat 12, and the centers of the curved surfaces 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 radian thereof may be the same or different, as long as the shape of the rear core surface 224 is ensured to be consistent with the shape of the outlet side wall surface of the valve seat 12.

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

Preferably, the seal core 22 is a sheet arc-shaped surface structure.

Wherein, the sealing core 22 comprises an inner core 221 and a sealing element 222, the sealing element 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 element 222, and the sealing element 222 is a rubber element, so that the rear core surface 224 has elasticity, 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 sealing member 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 ceramic, 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, rigid PVC, PP, PE, EEA, EVA, PS, HIPS, AAS, ACS, MBS, AS, BS, PMMA, PA, POM, NORYL, PC, PET, PBT, PPO, PPS, PSF, TPR, TPE, 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, a grinding machine is not needed for grinding, the processing technology is simplified, the automation degree of products is improved, the yield and the consistency of the products are improved, the working efficiency is improved, and the related manufacturing cost is reduced.

The hardness of the core 221 is relatively high, and the sealing member 222 is relatively selected from elastic materials, although the core 221 and the sealing member 222 may also be of an integral structure.

Wherein, the valve seat 12 is provided with a front wall surface 123 and a rear wall surface 124, the rear wall surface 124 is adjacent to the outlet side, the front wall surface 123 deviates from the outlet side, that is, the rear wall surface 124 is removed, the remaining wall surface of the valve seat 12 is a front wall surface 123, the front wall surface 123 is a regular circular arc surface generally centered on the center line of the valve seat 12, or may be an irregular wall surface, as long as it is ensured that when the valve core 20 turns to the front wall surface 123, a gap 40 is formed between the opposite front wall surface 123 and the valve core 20, so that the rear core surface 224 of the valve core 20 can turn from the closely attached rear wall surface 124 to the front wall surface 123 as long as it overcomes a small torsion, when the valve core 20 turns in the opening direction, one end of the valve core 20 is always in contact with the front wall surface 123, and the distance between the other end of the valve core 20 and the front, compared with the method for overcoming the whole-surface friction force, the method only needs to overcome the friction force of the contact end 23, the required torsion is small, the required starting voltage is small, the abrasion between the surfaces of the valve seat 12 and the valve core 20 is reduced, the leakage is effectively prevented, and the service life is prolonged. Under the same specification, the manufacturing cost of the existing valve is 10 yuan per piece, the utilization rate is 20 ten thousand times, the valve is integrally made of plastic, the manufacturing cost is 3 yuan per piece, the utilization rate is 100 ten thousand times, the manufacturing cost is effectively reduced, and the service life is prolonged. In addition, the pretightening force of the valve seat 12 is improved without a spring assembly, the height of the valve is reduced while the sealing performance is effectively kept through the structure of the sheet-shaped valve core 20, the weight of the valve is reduced, the weight and the height of the valve are 1/4 of the existing valve with the same specification, the application range of the eccentric valve 1 is expanded, and the installation is convenient.

In other words, two ends of the valve element 20 are provided with a contact end 23 and a free end 24, the contact end 23 contacts 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 element 20 is only attached to one end of the rear wall surface 124 of the valve seat 12 when the valve element is closed, once the valve element is rotated and deviated, a gap 40 is always formed between the free end 24 and the wall surface of the valve seat 12, and a rear core surface 224 connecting the contact end 23 and the free end 24 can be set to be 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.

In other words, the valve seat 12 is provided with a protruding wall 120, the protruding wall 120 being located at one side or both sides of the outlet 122, the protruding wall 120 slightly protruding inward with respect to the other walls 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 arcs or irregular arcs, 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 curvature of the protruding wall 120 is different, the protruding wall 120 is located on the left side of the rear wall 124, and the center of the right wall of the rear wall 124 is the same as that of the front wall 123, and the right wall is connected to the front wall.

As shown in fig. 8, the protruding wall 120 is a regular arc surface, a center O1 of the protruding wall 120 is offset from the center line O, the curvature of the protruding wall 120 is the same as that of the other wall surfaces, the protruding wall 120 is located on the left side of the rear wall surface 124, and a right wall surface of the rear wall surface 124 is the same as that of the front wall surface 123 and is connected to the front wall surface in a concentric manner.

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

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

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

Accordingly, the shape and size of the valve element 20 are adjusted according to the rear wall surface 124 of the valve seat 12, and thus, are sealingly engaged.

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 member 222 rotates along with the rotation of the base 21.

The eccentric valve 1 further comprises a driving device 30, 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.

When the eccentric valve 1 is in a closed state, the sealing core 22 is biased to the rear wall surface 124 of the outlet 122, especially fluid pressure increases the pressing and sealing of the sealing core 22 to the rear wall surface 124, as shown in fig. 3, because the sealing core 22 protrudes inward relative to other wall surfaces, when the valve core 20 rotates clockwise, the valve core 20 is always in contact with the wall surface of the valve seat 12 except for the contact end 23, the gap 40 between the free end 24 of the valve core 20 and the wall surface of the valve seat 12 is gradually increased, so that torsion required for rotating the valve core 20 is effectively reduced, the rotation of the valve core 20 is controlled through smaller torsion, and the driving voltage required by the opening and closing action of the valve is reduced, for the valve with the same specification, the required torque is only half of that of the existing valve, the valve can be driven by 3V voltage such as a button battery, a 220V power supply is not needed, the power is saved, and the valve is particularly suitable for small-sized electric induction equipment.

According to another aspect of the present application, an application system with the eccentric valve 1 is provided, which further includes a sensing module electrically connected to the driving device 30, and the sensing module automatically controls the driving device 30 to open and close the valve element 20. The application system is suitable for medical instruments, such as a urination system of a patient, automatically detects a urine bag, automatically opens when a certain amount of urine is reached, and is also suitable for an automatic hand sink or a toilet flushing device to realize automatic water outlet.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. An eccentric valve comprising a valve seat and a valve element, wherein the valve element is biased to a wall surface of the valve seat on one side, the valve seat is provided with an inlet, an outlet and a protruding wall, the valve element is rotatably abutted against or deviated from the outlet, the protruding wall is positioned on one side or both sides of the outlet, the protruding wall protrudes inward relative to the other wall surface of the valve seat, and accordingly, the shape of the core surface of the valve element facing the side wall surface of the outlet of the valve seat is consistent with the shape of the wall surface on the outlet side of the valve seat.

2. The eccentric valve of claim 1, wherein the valve seat has a front wall surface and a rear wall surface, the rear wall surface is adjacent to the outlet side, the front wall surface is offset from the outlet side, both ends of the valve element have a contact end and a free end, the contact end is in contact 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 the distance between the free end of the valve element and the wall surface of the valve seat gradually increases when the valve element rotates in the opening direction.

3. The eccentric valve according to claim 1, wherein said core has a front core surface and a rear core surface, said rear core surface is biased against said valve seat outlet side wall surface, said rear core surface has a shape corresponding to that of said valve seat rear wall surface, said rear core surface protrudes inward relative to other wall surfaces of said valve seat, said rear core surface of said core is in abutment with said valve seat outlet side wall surface when said eccentric valve is in the closed state, and a gap is formed between said rear core surface of said core and other wall surfaces of said valve seat when said eccentric valve is in the open state.

4. The eccentric valve according to claim 2, wherein the curvature of the protruded wall is the same or different such that the protruded wall is a regular arc or an irregular arc, the protruded wall is located at one side or both sides of the rear wall surface, and the center of the protruded wall is offset from the center line.

5. The eccentric valve according to claim 3, wherein the valve body comprises a base and a sealing core extending from the base to the outlet side of the valve seat, the front core surface and the rear core surface are respectively disposed at the front side and the rear side of the sealing core, and the centers of the curved surfaces of the front core surface and the rear core surface are the same or different.

6. The eccentric valve of claim 5, wherein the sealing core comprises an inner core and a sealing element, the sealing element surrounds the inner core, the inner core is connected with the substrate, the sealing element is a rubber element, and the inner core is a plastic element.

7. The eccentric valve of claim 5, wherein the sealing core is a sheet 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.

8. The eccentric valve of claim 6, wherein the material of the sealing member is selected from one of silicone, 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, rigid 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.

9. The eccentric valve according to any of claims 1 to 8, 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, the outlet channel is communicated with the outlet, the driving device is capable of driving the valve core to rotate, and the driving device is an electric driving piece or a manual driving piece.

10. Use of an eccentric valve according to any of claims 1-9.