CN217634183U - Bearing valve core on electric valve - Google Patents
Bearing valve core on electric valve Download PDFInfo
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- CN217634183U CN217634183U CN202121661636.2U CN202121661636U CN217634183U CN 217634183 U CN217634183 U CN 217634183U CN 202121661636 U CN202121661636 U CN 202121661636U CN 217634183 U CN217634183 U CN 217634183U
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- valve core
- sleeve
- valve
- bearing
- core sleeve
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Abstract
The utility model discloses a bearing valve core on an electric valve, which comprises a bearing inner sleeve, a rolling part and a valve core sleeve, wherein the rolling part is positioned between the bearing inner sleeve and the valve core sleeve, and the height of the bearing inner sleeve is less than that of the valve core sleeve; the valve core sleeve is made of a material which can elastically deform under the pressure of fluid and can recover the original shape without being influenced by the pressure. The bearing valve core has the advantages of high maneuverability, long service life and the like.
Description
Technical Field
The utility model relates to a bearing case on motorised valve.
Background
The electric valve is used as an important component forming a refrigerating system and is widely applied to a refrigerating unit, a refrigeration house, a supermarket refrigerator and the like. The electric valve has a main function of realizing the fine adjustment and opening and closing of the flow rate.
At present, the main structure of electric valves at home and abroad is a needle valve structure, and when the electric valve is in a closed state, a motor drives a rotor component to drive a valve core to rotate. However, in the process of rotary motion, the valve port and the valve core generate rotary friction with each other; particularly, when the axial pressure is increased, the rotational friction force is suddenly increased, and the valve element is easily worn. In a refrigeration system, the axial pressure varies as the system pressure varies. Therefore, the abrasion degree of the valve core is inconsistent, the valve core cannot be coaxial with the valve port, and the leakage in the valve port is increased; the internal leakage is increased, and the flow control is easy to be unstable; at the same time, the increased axial pressure also reduces the maneuverability of the electric valve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a bearing case on motorised valve.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a bearing valve core on an electric valve comprises a bearing inner sleeve, a rolling part and a valve core sleeve, wherein the rolling part is positioned between the bearing inner sleeve and the valve core sleeve, and the height of the bearing inner sleeve is smaller than that of the valve core sleeve; the valve core sleeve is made of a material which can elastically deform under the pressure of fluid and can recover the original shape without being influenced by the pressure.
In the above-mentioned bearing valve core on the electric valve, if the valve core sleeve is made of engineering plastics, the valve core sleeve is at least one of PEEK, PPS, PA or PTFE; if the valve core sleeve is made of metal, the valve core sleeve is at least one of stainless steel, red copper or tin bronze.
In the above-described bearing valve body for an electric valve, the rolling portion includes 2 or more balls and a ball holder, and the balls are attached to the ball holder; or the rolling part is only composed of more than 2 balls. The purpose of the ball is to reduce friction.
In the above-mentioned bearing valve core on the electric valve, the clearance between the bearing inner sleeve and the valve core sleeve is within 0.15mm, and the purpose is to improve the accuracy of flow position control.
Compared with the prior art, the utility model discloses following profitable effect has:
when the driving mechanism drives the bearing inner sleeve to rotate, the valve core is sleeved under the rolling friction action of the ball and can hardly rotate and only does axial displacement motion; in particular, the valve core sleeve only generates axial linear sliding friction force under the pressure of fluid. Therefore, the valve core sleeve cannot be abraded, the service life of the valve core sleeve is prolonged, and the flow control stability is ensured; meanwhile, the maneuverability of the electric valve is improved.
Drawings
The utility model is further explained with the attached drawings:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic cross-sectional view of the present invention;
in the figure, 1 is a bearing inner sleeve, 2 is a rolling part, and 3 is a valve core sleeve.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
Referring to fig. 1 and fig. 2, a bearing valve core of an electric valve according to the present invention is further specifically described as follows:
which comprises a bearing inner sleeve 1, a rolling part 2 and a valve core sleeve 3,
the rolling part 2 is positioned between the bearing inner sleeve 1 and the valve core sleeve 3;
wherein, the height of the bearing inner sleeve 1 is less than that of the valve core sleeve 3;
the valve core sleeve 3 is made of a material which can elastically deform under the action of fluid pressure and can recover the original shape without being influenced by the pressure; the surface of the valve core sleeve is subjected to smooth finish treatment, so that the friction coefficient of the material is reduced, the maneuvering performance of the electric valve is further improved, and the service life of the electric valve is further prolonged.
Wherein, if the valve core sleeve is made of engineering plastics, the valve core sleeve is at least one of PEEK, PPS, PA or PTFE; if the valve core sleeve is made of metal, the valve core sleeve is made of at least one of stainless steel, red copper or tin bronze.
The rolling part 2 comprises more than 2 balls and a ball retainer, and the balls are arranged on the ball retainer; or the rolling part 2 is composed of more than 2 balls. The purpose of selecting the ball is to reduce friction and improve the maneuverability of the electric valve.
Wherein, the clearance between the bearing inner sleeve 1 and the valve core sleeve 3 is within 0.15mm, aiming at improving the accuracy of flow position control.
In summary, the specific operation principle is as follows: when the driving mechanism drives the bearing inner sleeve 1 to rotate, the valve core sleeve 3 hardly rotates under the rolling friction action of the balls and only moves in an axial displacement manner; in particular, the valve core sleeve 3 only generates axial linear sliding friction force under the fluid pressure. Therefore, the valve core sleeve 3 cannot be abraded, the service life of the valve core sleeve 3 is prolonged, and the flow control stability is ensured; meanwhile, the maneuverability of the electric valve is improved.
The above embodiments are only for illustrating the technical conception and the characteristics of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention, and accordingly, the present invention is not limited by the embodiments. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. A bearing valve core on an electric valve is characterized in that: the rolling device comprises a bearing inner sleeve (1), a rolling part (2) and a valve core sleeve (3), wherein the rolling part (2) is positioned between the bearing inner sleeve (1) and the valve core sleeve (3), and the height of the bearing inner sleeve (1) is smaller than that of the valve core sleeve (3); the valve core sleeve (3) can elastically deform under the pressure of fluid, and can recover the original shape without being influenced by the pressure.
2. The valve core of claim 1, wherein: if the valve core sleeve (3) is made of engineering plastics.
3. The valve core of claim 2, wherein: the valve core sleeve (3) is at least one of PEEK, PPS, PA or PTFE.
4. The valve core of claim 1, wherein: if the valve core sleeve (3) is made of metal.
5. The valve core of claim 4, wherein: the valve core sleeve (3) is at least one of stainless steel, red copper or tin bronze.
6. The valve core of claim 1, wherein: the rolling part (2) comprises at least 2 balls.
7. The valve core of claim 1, wherein: the rolling part (2) comprises balls and a ball retainer, and the balls are mounted on the ball retainer.
8. The bearing cartridge for an electrically operated valve of claim 7, wherein: the number of the balls and the ball retainer is at least 2.
9. The valve core of claim 1, wherein: the clearance between the bearing inner sleeve (1) and the valve core sleeve (3) is not more than 0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121661636.2U CN217634183U (en) | 2021-07-21 | 2021-07-21 | Bearing valve core on electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121661636.2U CN217634183U (en) | 2021-07-21 | 2021-07-21 | Bearing valve core on electric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217634183U true CN217634183U (en) | 2022-10-21 |
Family
ID=83619247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121661636.2U Active CN217634183U (en) | 2021-07-21 | 2021-07-21 | Bearing valve core on electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217634183U (en) |
-
2021
- 2021-07-21 CN CN202121661636.2U patent/CN217634183U/en active Active
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| GR01 | Patent grant |