CN116792525A - Electric valve - Google Patents
Electric valve Download PDFInfo
- Publication number
- CN116792525A CN116792525A CN202210272089.1A CN202210272089A CN116792525A CN 116792525 A CN116792525 A CN 116792525A CN 202210272089 A CN202210272089 A CN 202210272089A CN 116792525 A CN116792525 A CN 116792525A
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- CN
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- Prior art keywords
- valve body
- channel
- valve
- passage
- section
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- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 57
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 13
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Multiple-Way Valves (AREA)
Abstract
The application discloses an electric valve, which comprises a valve body assembly, wherein the valve body assembly comprises a valve body, a valve rod, a valve core and a piston assembly, and the valve rod is connected with the valve core; the valve body assembly comprises a first sealing ring and a second sealing ring, and the first sealing ring and the second sealing ring are sleeved on the valve rod; the valve body assembly includes an interface passage and a first chamber; the first cavity is positioned between the first sealing ring and the second sealing ring, one end of the first cavity is opened towards the first sealing ring, the other end of the first cavity is opened towards the second sealing ring, the valve body is provided with a first channel, one end of the first channel is communicated with the first cavity, and the other end of the first channel is communicated with the interface channel; the first chamber is filled with sealing liquid; the piston assembly is movably arranged in the first channel, and the piston assembly is in sealing arrangement with the wall corresponding to the first channel. This achieves an axial sealing of the valve stem.
Description
[ field of technology ]
The present application relates to an electrically operated valve.
[ background Art ]
The electric valve is used for on-off or switching of fluid in a system pipeline, the electric valve comprises a valve body, a valve rod and a valve core, the valve core is located in an inner cavity of the valve body, the valve core rotates to realize on-off of the fluid, but in the rotating process of the valve core, part of the fluid can enter the inner cavity, and if the electric valve is used for a long time, the problem that the fluid can leak outwards along the axial direction of the valve rod exists.
[ application ]
In order to solve the problem of leakage of the electric valve, the following technical scheme is provided:
an electric valve comprises a power component and a valve body assembly, wherein the valve body assembly comprises a valve body, a valve rod and a valve core, the power component is connected with the valve rod, and the valve rod is connected with the valve core; the valve body assembly comprises a first sealing ring and a second sealing ring, and the first sealing ring and the second sealing ring are sleeved on the valve rod; the valve body assembly comprises an interface channel and a first chamber, the first chamber is positioned between the first sealing ring and the second sealing ring, one end of the first chamber is opened towards the first sealing ring, the other opposite end of the first chamber is opened towards the second sealing ring, the valve body is provided with a first channel, one end of the first channel is communicated with the first chamber, and the other end of the first channel is communicated with the interface channel; the valve body assembly includes a piston assembly; the piston assembly is movably arranged in the first channel, and the piston assembly and the wall corresponding to the first channel are arranged in a sealing way.
In this way, two sealing rings are arranged in the axial direction of the valve rod, and by arranging the piston, when the interface channel is communicated with fluid, sealing liquid in the first chamber is extruded, so that a plurality of seals are realized.
Drawings
FIG. 1 is a schematic cross-sectional view of the present application;
FIG. 2 is a schematic view of the first channel of FIG. 1;
FIG. 3 is a schematic cross-sectional view of another embodiment of the present application;
FIG. 4 is a schematic view of the first channel of FIG. 3;
FIG. 5 is a schematic cross-sectional view of another embodiment of the present application;
fig. 6 is a schematic view of the first channel of fig. 5.
Reference numerals:
1. a power component; 2. a valve body assembly;
21. a valve body; 22. a cover; 23. a valve stem; 24. a valve core;
210. an inner cavity;
211. a first mounting aperture; 2111. a first groove; 2112. a second groove;
25. a first seal ring; 26. a second seal ring;
27. a piston assembly; 28. a limiting element; 281. a via hole;
29. a first chamber; 31. a first channel; 32. a second channel; 33. a third channel;
34. a groove portion; 341. a first concave portion; 342. a second concave portion;
311. a first bore section; 312. a second bore section; 313. a limit step part;
321. a first pass section; 322. a second pass section;
20. an interface channel;
201. a first connection channel; 202. a second connection channel;
203. a duct; 241. a communication hole;
221. a base portion; 222. a connection part; a connection groove 2221;
2211. a third groove; 2212. and a third sealing ring.
Detailed Description
The technical scheme of the specific embodiment is described below with reference to the accompanying drawings,
as shown in figures 1 and 2 of the drawings,
an electric valve comprises a power component 1 and a valve body assembly 2, wherein the valve body assembly 2 comprises a valve body 21, a valve rod 23 and a valve core 24; the power unit 1 is sealingly fixed to the valve body 21, and the power unit 1 is connected (in particular, drivingly connected) to the valve stem 23, the valve stem 23 being connected to the valve core 24. The valve body assembly 2 includes a cover 22, the cover 22 is fixedly connected with the valve body 21, specifically, the cover 22 includes a base portion 221 and a connecting portion 222, the base portion 221 is in sealing abutment with an end portion of the valve body 21 (specifically, a third sealing ring 2212 is disposed between the base portion 221 and the end portion of the valve body 21, the base portion 221 is provided with a third groove connection groove 2221;2211, the third sealing ring 2212 is pressed between a wall corresponding to the third groove connection groove 2221;2211 and the end portion of the valve body 21), the connecting portion 222 is at least partially located in the valve body 21, and the connecting portion 222 is fixedly connected with the valve body 21.
The valve body assembly 2 includes an interface passage 20; the valve body 21 includes an inner cavity 210, and the valve core 24 is located in the inner cavity 210; the cover 22 includes a first connection passage 201 (the first connection passage 201 forms part of the interface passage 20), the valve body 21 includes a second connection passage 202 (the second connection passage 202 forms part of the interface passage 20), the valve spool 24 includes a hole 203 (the hole 203 forms part of the interface passage 20) penetrating the body thereof, and by rotating the valve spool 24, the first connection passage 201 can be made to communicate with or not communicate with the second connection passage 202 through the hole 203, thereby controlling the on-off of the fluid.
The valve body 21 includes a first mounting aperture 211, and the valve stem 23 is at least partially positioned in the first mounting aperture 211; the valve body assembly 2 comprises a first sealing ring 25 and a second sealing ring 26; the first sealing ring 25 and the second sealing ring 26 are sleeved on the valve rod 23 (specifically, the wall corresponding to the first mounting hole 211 is provided with a first groove 2111 and a second groove 2112, the first sealing ring 25 is at least partially located in the first groove 2111, the second sealing ring 26 is at least partially located in the second groove 2112, the first sealing ring 25 is pressed between the valve rod 23 and the wall corresponding to the first groove 2111, and the second sealing ring 26 is pressed between the valve rod 23 and the wall corresponding to the second groove 2112).
The valve body assembly 2 further comprises a first chamber 29, the first chamber 29 being located between the first seal 25 and the second seal 26, and one end of the first chamber opening towards the first seal and the opposite end of the first chamber opening towards the second seal. The first chamber 29 is filled with a sealing liquid, which in this embodiment is a sealing oil. By arranging the sealing oil, lubrication during relative rotation between the valve rod 23 and the first sealing ring 25 and the second sealing ring 26 can be improved, and friction can be reduced. The valve body 21 is provided with a first channel 31, one end of which communicates with the first chamber, and the other end of which communicates directly or indirectly with the interface channel 20, in this embodiment the first channel 31 communicates with the second connecting channel 202.
The valve body assembly 2 further comprises a piston assembly 27 and a limiting element 28, wherein the piston assembly 27 is movably arranged in the first channel 31, and the wall of the piston assembly 27 corresponding to the first channel 31 is in sealing arrangement; the limiting element 28 is located in the first channel 31, and the limiting element 28 is fixed (specifically, fixed by threaded connection) on the wall corresponding to the first channel 31, and the limiting element 28 is provided with at least one through hole 281 penetrating through the body of the limiting element to ensure that two sides of the limiting element are communicated; along the axial direction of the first channel 31, the stop element 28 is remote from the first chamber 29 relative to the piston assembly 27 to prevent the piston assembly 27 from moving out of the first channel 31.
The first channel 31 comprises a first hole section 311 and a second hole section 312, the first hole section 311 having a smaller pore diameter than the second hole section 312; the first bore section 311 is adjacent to the first chamber 29 relative to the second bore section 312; the piston assembly 27 is positioned at the second hole section 312, the wall of the piston assembly 27 corresponding to the second hole section 312 is sealed and can be arranged in a sliding manner, and the diameter of the piston assembly 27 is larger than the aperture of the first hole section 311; a limiting step 313 is formed at the junction of the first hole section 311 and the second hole section 312 to limit the stroke of the piston assembly 27, preventing the transition extrusion of sealing oil.
Fluid flowing into the interface passage 20, particularly high pressure fluid, partially enters the first passage 31 and acts on the piston assembly 27.
The piston assembly 27 moves in the axial direction of the second passage 32 in the direction approaching the first chamber 29 under the action of the fluid pressure, thereby compressing the sealing oil in the first chamber 29 and forming a uniform and stable sealing oil film, so that the fluid in the inner chamber 210 is strongly restricted from leaking outwardly in the axial direction of the valve stem 23 under the action of the sealing oil in the first seal 25, the second seal 26 and the first chamber 29.
Fig. 3 and 4 show another embodiment, different from the above-described embodiment, in this embodiment,
the first passage 31 is disposed along the axial direction of the valve body 21, and one opening of the first passage 31 is located at the end of the valve body 21, so that the first passage 31 can be directly machined at the end of the valve body 21. In the radial direction of the valve body 21, the opening of the first passage 31 at the end of the valve body 21 is close to the connecting portion 222 of the cap 22 with respect to the third seal ring 2212 to secure the sealability of the inside.
The first channel 31 comprises a second channel 32, and the second channel is located between the cover 22 and the valve body 21. The second passage 32 includes a first through section 321 and a second through section 322, the first through section 321 communicating with the second hole section 312, the first through section 321 being disposed along the axial direction of the valve body 21, the second through section 322 being disposed along the radial direction of the valve body 21. The valve body 21 is provided with a groove portion 34, the groove portion 34 includes a first recess 341 and a second recess 342, the first recess 341 is provided along an axial direction of the valve body 21, the second recess 342 is provided along a radial direction of the valve body 21, the first recess 341 and the connection portion 222 of the cap 22 are formed with the first through section 321, and the second recess 342 and the base portion 221 of the cap 22 are formed with the second through section 322.
The cover 22 includes a third channel 33, and the third channel 33 is disposed at the connecting portion 222 along a radial direction of the cover 22. The second passage 32 communicates with the third passage 33, and the third passage 33 communicates with the first connection passage 201. Specifically, the connecting portion 222 has a connecting groove at the periphery, and the second through section 322 of the second channel 32 at least partially coincides with the projection of the connecting groove in the radial direction of the cover 22, that is, the second through section 322 communicates with the connecting groove; an opening of the third passage 33 is provided at the bottom wall portion of the connection groove so that the third passage 33 communicates with the connection groove.
In this way, at the time of assembly, the second passage 32 and the third passage 33 are easily communicated, thereby reducing the requirement for assembly accuracy.
Fluid flowing into the interface passage 20, partially enters the third passage 33, passes through the connecting groove into the second passage 32, and then enters the first passage 31, thereby acting on the piston assembly 27.
Fig. 5 and 6 show another embodiment, different from the above-described embodiment, in this embodiment,
the valve core 24 is provided with a communication hole 241, the communication hole 241 is communicated with the pore canal 203, and the communication hole 241 is also communicated with the inner cavity 210; second passageway 322 communicates with interior cavity 210 (i.e., second passageway 32 communicates with interior cavity 210).
Specifically, the valve core 24 is provided with a limit groove, the valve rod 23 is at least partially positioned in the limit groove, and in the circumferential direction of the valve rod 23, the valve rod 23 is in limit connection with a wall corresponding to the limit groove, so that transmission connection between the valve rod 23 and the valve core 24 is realized. The communication hole 241 is communicated with the limit groove, the limit groove is communicated with the inner cavity 210, and a gap is reserved between the valve rod 23 and the wall corresponding to the limit groove, so that the communication hole 241 is communicated with the inner cavity 210 through the gap.
Thus, fluid flowing through the port 203, particularly high pressure fluid, enters the inner chamber 210, the second passage 32, the first passage 31 through the communication hole 241, thereby acting on the piston assembly 27.
It should be noted that: although the present application has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that the present application may be modified, combined or equivalent thereto, and all modifications and improvements thereto without departing from the spirit and scope of the present application are intended to be included in the scope of the appended claims.
Claims (10)
1. An electric valve comprises a power component (1) and a valve body assembly (2), wherein the valve body assembly (2) comprises a valve body (21), a valve rod (23) and a valve core (24), the power component (1) is connected with the valve rod (23), and the valve rod (23) is connected with the valve core (24);
the valve is characterized in that the valve body assembly (2) comprises a first sealing ring (25) and a second sealing ring (26), and the first sealing ring (25) and the second sealing ring (26) are sleeved on the valve rod (23);
the valve body assembly (2) comprises an interface passage (20) and a first chamber (29);
the first chamber (29) is located between the first sealing ring (25) and the second sealing ring (26), one end of the first chamber (29) is open towards the first sealing ring (25), the opposite end of the first chamber (29) is open towards the second sealing ring (26), the valve body (21) is provided with a first channel (31), one end of the first channel (31) is communicated with the first chamber (29), and the other end of the first channel (31) is communicated with the interface channel (20); the first chamber (29) is filled with a sealing liquid;
the valve body assembly (2) comprises a piston assembly (27);
the piston assembly (27) is movably arranged in the first channel (31), and the piston assembly (27) is in sealing arrangement with the wall corresponding to the first channel (31).
2. An electrically operated valve as claimed in claim 1, wherein said valve body assembly (2) further comprises a limiting element (28), said limiting element (28) being located in said first channel (31), and said limiting element (28) being in a limiting fixation with a wall corresponding to said first channel (31);
the spacing element (28) is remote from the first chamber (29) relative to the piston assembly (27) in the axial direction of the first channel (31).
3. An electrically operated valve according to claim 1, characterized in that the valve body (21) comprises a second connecting channel (202), the second connecting channel (202) forming part of the interface channel (20);
the first passage (31) communicates with the second connection passage (202).
4. An electrically operated valve as claimed in claim 1, characterised in that said valve body assembly (2) further comprises a cover (22), said cover (22) being fixedly connected to said valve body (21);
the cover (22) comprises a first connection channel (201), the first connection channel (201) forming part of the interface channel (20);
the first channel (31) comprises a second channel (32), the second channel (32) being located between the cover (22) and the valve body (21);
the cover (22) comprises a third channel (33), the third channel (33) being in communication with the first connection channel (201), the second channel (32) being in communication with the third channel (33);
the first passage (31) is provided along the axial direction of the valve body (21), and one opening of the first passage (31) is located at the end of the valve body (21).
5. An electrically operated valve as claimed in claim 4, characterised in that said cover (22) comprises a base portion (221) and a connecting portion (222), said base portion (221) being in sealing abutment with said valve body (21), said connecting portion (222) being at least partially located within said valve body (21), and said connecting portion (222) being fixedly connected with said valve body (21);
the third passage (33) is provided to the connecting portion (222) in the radial direction of the cover (22).
6. An electric valve according to claim 5, characterized in that the connecting portion (222) is provided at its outer periphery with a connecting groove communicating with the third passage (33);
the second passage (32) comprises a first through section (321) and a second through section (322), the first through section (321) is arranged along the axial direction of the valve body (21), and the second through section (322) is arranged along the radial direction of the valve body (21);
the second passage section (322) communicates with the connection groove.
7. An electrically operated valve as claimed in claim 1, characterised in that said valve body assembly (2) further comprises a cover (22), said cover (22) being fixedly connected to said valve body (21);
the first channel (31) comprises a second channel (32) and the second channel is located between the cover (22) and the valve body (21);
the valve body (21) comprises an inner cavity (210); the valve core (24) comprises a communication hole (241) and a pore canal (203) penetrating through the body of the valve core, the communication hole (241) is communicated with the pore canal (203), the second channel (32) is communicated with the inner cavity (210), and the inner cavity (210) is communicated with the communication hole (241).
8. An electrically operated valve according to claim 7, characterized in that said second passage (32) comprises a first passage section (321) and a second passage section (322), said first passage section (321) being arranged along the axial direction of said valve body (21), said second passage section (322) being arranged along the radial direction of said valve body (21); -the second passage section (322) is in communication with the inner cavity (210);
the sealing cover (22) comprises a base part (221) and a connecting part (222), the base part (221) is in sealing abutting connection with the valve body (21), the connecting part (222) is at least partially positioned in the valve body (21), and the connecting part (222) is fixedly connected with the valve body (21).
9. An electric valve according to claim 6 or 8, characterized in that the valve body (21) is provided with a groove portion (34), the groove portion (34) comprising a first recess (341) and a second recess (342), the first recess (341) being arranged in the axial direction of the valve body (21), the second recess (342) being arranged in the radial direction of the valve body (21); the first through section (321) is formed at a connection portion (222) between the first recess (341) and the cover (22), and the second through section (322) is formed at a connection portion between the second recess (342) and a base portion (221) of the cover (22).
10. An electrically operated valve as claimed in claim 1 or 2 or 3 or 4 or 7, characterized in that said first passage (31) comprises a first hole section (311) and a second hole section (312), said first hole section (311) being close to said first chamber (29) with respect to said second hole section (312);
the aperture of the first bore section (311) is smaller than the aperture of the second bore section (312), and the diameter of the piston assembly (27) is larger than the aperture of the first bore section (311); a limiting step part (313) is formed at the joint of the first hole section (311) and the second hole section (312).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210272089.1A CN116792525A (en) | 2022-03-18 | 2022-03-18 | Electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210272089.1A CN116792525A (en) | 2022-03-18 | 2022-03-18 | Electric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116792525A true CN116792525A (en) | 2023-09-22 |
Family
ID=88033256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210272089.1A Pending CN116792525A (en) | 2022-03-18 | 2022-03-18 | Electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116792525A (en) |
-
2022
- 2022-03-18 CN CN202210272089.1A patent/CN116792525A/en active Pending
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |