CN219317301U - Make things convenient for hard seal liquid accuse switching-over valve of dismouting - Google Patents
Make things convenient for hard seal liquid accuse switching-over valve of dismouting Download PDFInfo
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- CN219317301U CN219317301U CN202320782273.0U CN202320782273U CN219317301U CN 219317301 U CN219317301 U CN 219317301U CN 202320782273 U CN202320782273 U CN 202320782273U CN 219317301 U CN219317301 U CN 219317301U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model discloses a hard seal hydraulic control reversing valve convenient to disassemble and assemble, which comprises an upper valve sleeve, a middle valve sleeve and a lower valve sleeve which are connected in sequence, wherein a piston is arranged in the upper valve sleeve, a piston rod is arranged in the piston, the other end of the piston rod penetrates through the middle valve sleeve and the lower valve sleeve, a spring is sleeved on the piston rod and is positioned between the middle valve sleeve and the lower valve sleeve, a clamping ring is sleeved at the end part of the piston rod, and the piston rod synchronously move. The hard seal hydraulic control reversing valve convenient to disassemble and assemble can be connected with a corresponding connecting port according to the needs when in use, and the hard seal hydraulic control reversing valve is not required to be assembled and disassembled by other tools, so that the assembling efficiency and the maintenance efficiency of the reversing valve core are improved.
Description
Technical Field
The utility model belongs to the technical field of valves, and particularly relates to a hard seal hydraulic control reversing valve convenient to assemble and disassemble.
Background
The hydraulic control reversing valve is a valve body structure which can reverse the valve body by controlling the fluid pressure. Such valves are important in hydraulic support devices for coal mine machinery. The hydraulic control reversing valve is different from the common valve in that a control oil way is added, when the control oil way is not communicated with the pressure oil, the hydraulic control reversing valve works like the common one-way valve, and fluid only flows from the oil inlet to the oil outlet, so that reversing flow cannot be realized. When the control oil way is provided with control pressure input, the piston moves under the action of pressure oil, and meanwhile, the piston rod moves downwards, and the liquid inlet hole is communicated with the liquid outlet. At present, the hydraulic control reversing valve adopts a threaded connection structure, the toughness and the viscosity of materials at the threaded connection position of parts are large, the problems of clamping stagnation and sticking buckle are easy to generate at the threaded connection position, the disassembly of a valve core is further influenced, the service performance and the service life of the hydraulic control reversing valve are seriously influenced, a valve seat is independently arranged in a valve sleeve, the structure is complex, and the actual production efficiency is influenced.
Therefore, how to provide a hydraulic control reversing valve which can be rapidly processed, has a simple structure, is rapid to process and assemble, improves the production efficiency, and reduces the reject ratio is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The utility model aims to solve the problems and provide the hard seal hydraulically-controlled reversing valve which is simple in structure, quick to process and assemble, high in production efficiency, integrally inserted and convenient to assemble and disassemble.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a make things convenient for hard seal liquid accuse switching-over valve of dismouting, includes upper valve pocket, well valve pocket and lower valve pocket that connects gradually, is equipped with the piston in the upper valve pocket, is equipped with the piston rod in the piston, and the other end of piston rod wears to locate well valve pocket and lower valve pocket, and the cover is equipped with the spring on the piston rod, and the spring is located between well valve pocket and the lower valve pocket, and the tip cover of piston rod is equipped with the snap ring, piston and piston rod synchronous motion.
Preferably, the upper valve sleeve is of a revolving body structure, a pilot control port and a pressure equalizing groove are arranged on the end face of the upper valve sleeve, the pressure equalizing groove is of a circular structure, and the pilot control port penetrates through the end face of the upper valve sleeve; the outer circumferential surface of the upper valve sleeve is provided with a sealing groove, the cross section of the sealing groove is of a U-shaped structure, the outer circumferential surface of the upper valve sleeve is provided with a liquid return hole, and the liquid return hole is communicated with the inside and the outside of the upper valve sleeve; the end face of the upper valve sleeve is concaved inwards to form a connecting groove, and the end part of the middle valve sleeve is positioned in the connecting groove and is abutted with the upper valve sleeve.
Preferably, the liquid return holes are circumferentially distributed on the outer surface of the upper valve sleeve.
Preferably, the piston is of a revolving body structure, the end part of the piston is a piston guide surface, the piston guide surface is of an inclined surface structure, the outer circumferential surface of the piston is concave inwards to form a piston mounting groove, the other end of the piston is inclined to form a piston conical surface, and the piston conical surface is abutted with the middle valve sleeve when the piston moves.
Preferably, the middle valve sleeve is of a hollow revolving body structure, the outer surface of the middle valve sleeve is sequentially provided with a middle valve sleeve guide conical surface, a middle valve sleeve annular surface, a middle valve sleeve installation groove, a middle valve sleeve liquid inlet hole and a middle valve sleeve buffer surface, the middle valve sleeve guide conical surface is connected with the middle valve sleeve annular surface, the section of the middle valve sleeve installation groove is U-shaped, the middle valve sleeve liquid inlet hole is communicated with the inner part and the outer part of the middle valve sleeve, the axis of the middle valve sleeve liquid inlet hole is mutually perpendicular to the axis of the middle valve sleeve, and the section of the middle valve sleeve buffer surface is U-shaped.
Preferably, a middle valve sleeve first sealing inclined plane, a middle valve sleeve first step, a middle valve sleeve second inclined plane, a middle valve sleeve second step and a middle valve sleeve second sealing inclined plane which are sequentially connected are arranged in the middle valve sleeve, the end part of the middle valve sleeve is concave to form a middle valve sleeve connecting ring, the cross section of the middle valve sleeve connecting ring is of an L-shaped structure, and when the piston moves, the middle valve sleeve first sealing inclined plane is in butt joint with the piston, and the middle valve sleeve connecting ring is matched with the lower valve sleeve.
Preferably, the outer circumferential surface of the piston rod is sequentially provided with a piston rod guide part, a piston rod mounting groove, a piston rod waist-shaped hole, a piston rod conical surface, a piston rod limiting groove and a piston rod snap ring groove, wherein the piston rod guide part is of an inclined surface structure, the section of the piston rod mounting groove is of a U-shaped structure, the middle part of the piston rod protrudes outwards to form a piston rod bulge, the piston rod conical surface is of an inclined structure and is positioned on the piston rod bulge, the piston rod limiting groove is connected with the end part of the spring, and the snap ring is sleeved in the piston rod snap ring groove.
Preferably, the lower valve sleeve is of a revolving body structure, an outer sealing groove of the lower valve sleeve is formed in the outer circumferential surface of the lower valve sleeve, an inner sealing groove of the lower valve sleeve is formed in the inner surface of the lower valve sleeve, and sealing rings are respectively sleeved in the outer sealing groove of the lower valve sleeve and the inner sealing groove of the lower valve sleeve.
The beneficial effects of the utility model are as follows:
1. the hard seal hydraulic control reversing valve convenient to disassemble and assemble can be connected with a corresponding connecting port according to the needs when in use, and the hard seal hydraulic control reversing valve is not required to be assembled and disassembled by other tools, so that the assembling efficiency and the maintenance efficiency of the reversing valve core are improved.
2. The utility model adopts the design of the sealing conical surface on the middle valve sleeve, adopts a hard sealing mode, cancels the traditional thread design structure, solves the problems of easy clamping stagnation and sticking buckle at the traditional thread connection part, reduces the number of parts and processing difficulty, simultaneously improves the integral assembly coaxiality of the sealing surface and the valve core, improves the system stability, further improves the sealing performance of the reversing valve, reduces the production cost and improves the production assembly efficiency.
3. The utility model has simple, reasonable and compact structure, convenient installation and disassembly and convenient maintenance, and is suitable for long-term use and operation in a severe underground working environment with complex conditions.
Drawings
FIG. 1 is a schematic cross-sectional view of a conveniently disassembled and assembled hard seal pilot operated directional control valve of the present utility model;
FIG. 2 is a schematic cross-sectional view of the upper valve sleeve of the present utility model;
FIG. 3 is a schematic end view of the upper valve sleeve of the present utility model;
FIG. 4 is a schematic view of the piston of the present utility model;
FIG. 5 is a schematic view of the valve housing of the present utility model;
fig. 6 is a schematic view of the structure of the piston rod of the present utility model.
Reference numerals illustrate: 1. an upper valve sleeve; 2. a piston; 3. a middle valve sleeve; 4. a piston rod; 5. a spring; 6. a lower valve sleeve; 7. a clasp; 101. a pilot control port; 102. a pressure equalizing groove; 103. sealing the groove; 104. a liquid return hole; 105. a connection groove; 201. a piston guide surface; 202. a piston mounting groove; 203. a piston conical surface; 301. a middle valve sleeve guiding conical surface; 302. a central valve sleeve ring surface; 303. a middle valve sleeve mounting groove; 304. a medium valve sleeve liquid inlet hole; 305. a buffer surface of the middle valve sleeve; 306. a first sealing inclined surface of the middle valve sleeve; 307. a first step of the middle valve sleeve; 308. a second inclined surface of the middle valve sleeve; 309. a second step of the middle valve sleeve; 310. a second sealing inclined surface of the middle valve sleeve; 401. a piston rod guide; 402. a piston rod mounting groove; 403. a piston rod waist-shaped hole; 404. conical surface of piston rod; 405. a piston rod limiting groove; 406. a piston rod snap ring groove.
Detailed Description
The utility model is further described with reference to the accompanying drawings and specific examples:
as shown in fig. 1 to 6, the hard seal hydraulic control reversing valve convenient to disassemble and assemble provided by the utility model comprises an upper valve sleeve 1, a middle valve sleeve 3 and a lower valve sleeve 6 which are sequentially connected, wherein a piston 2 is arranged in the upper valve sleeve 1, a piston rod 4 is arranged in the piston 2, the other end of the piston rod 4 is arranged on the middle valve sleeve 3 and the lower valve sleeve 6 in a penetrating manner, a spring 5 is sleeved on the piston rod 4, the spring 5 is positioned between the middle valve sleeve 3 and the lower valve sleeve 6, a clamping ring 7 is sleeved at the end part of the piston rod 4, and the piston 2 and the piston rod 4 synchronously move.
The upper valve sleeve 1 is a revolving body structure, and the inside of the upper valve sleeve 1 is a control cavity. The end face of the upper valve sleeve 1 is provided with a pilot control port 101 and a pressure equalizing groove 102, the pressure equalizing groove 102 is of a circular structure, and the pilot control port 101 penetrates through the end face of the upper valve sleeve 1. The outer circumferential surface of the upper valve sleeve 1 is provided with a sealing groove 103, the cross section of the sealing groove 103 is of a U-shaped structure, the outer circumferential surface of the upper valve sleeve 1 is provided with a liquid return hole 104, and the liquid return hole 104 is communicated with the inside and the outside of the upper valve sleeve 1. The end surface of the upper valve sleeve 1 is concaved inwards to form a connecting groove 105, and the end part of the middle valve sleeve 3 is positioned in the connecting groove 105 and is abutted with the upper valve sleeve 1. The liquid return holes 104 are circumferentially distributed on the outer surface of the upper valve sleeve 1.
In this embodiment, the existing pilot control fluid enters the control chamber inside the upper valve housing 1 through the pilot control port 101. The upper valve sleeve 1 is cooperatively connected with the middle valve sleeve 3 through the connecting groove 105.
The piston 2 is in a revolving structure, the end part of the piston 2 is a piston guide surface 201, the piston guide surface 201 is in an inclined surface structure, a piston installation groove 202 is concaved inwards on the outer circumferential surface of the piston 2, the other end of the piston 2 is inclined to form a piston conical surface 203, and the piston conical surface 203 is abutted with the middle valve sleeve 3 when the piston 2 moves.
In this embodiment, the piston guide surface 201 is a guide portion, and a seal ring is installed in the piston installation groove 202, and the piston conical surface 203 is fitted with the conical surface of the middle valve sleeve 3 when the liquid is fed.
The middle valve sleeve 3 is of a hollow revolving body structure, a middle valve sleeve guide conical surface 301, a middle valve sleeve annular surface 302, a middle valve sleeve mounting groove 303, a middle valve sleeve liquid inlet hole 304 and a middle valve sleeve buffer surface 305 are sequentially arranged on the outer surface of the middle valve sleeve 3, the middle valve sleeve guide conical surface 301 is connected with the middle valve sleeve annular surface 302, the cross section of the middle valve sleeve mounting groove 303 is U-shaped, the middle valve sleeve liquid inlet hole 304 is communicated with the inside and the outside of the middle valve sleeve 3, the axis of the middle valve sleeve liquid inlet hole 304 is mutually perpendicular to the axis of the middle valve sleeve, and the cross section of the middle valve sleeve buffer surface 305 is U-shaped.
The inner part of the middle valve sleeve 3 is provided with a middle valve sleeve first sealing inclined surface 306, a middle valve sleeve first step 307, a middle valve sleeve second inclined surface 308, a middle valve sleeve second step 309 and a middle valve sleeve second sealing inclined surface 310 which are sequentially connected, the end part of the middle valve sleeve 3 is concaved inwards to form a middle valve sleeve connecting ring 311, the cross section of the middle valve sleeve connecting ring 311 is of an L-shaped structure, and when the piston 2 moves, the middle valve sleeve first sealing inclined surface 306 is abutted with the piston 2, and the middle valve sleeve connecting ring 311 is matched with the lower valve sleeve 6.
The first sealing inclined surface 306 of the middle valve sleeve and the second sealing inclined surface 310 of the middle valve sleeve are respectively attached to the piston conical surface 203 and the piston rod 4 to realize sealing. The lower valve sleeve 6 is matched with the middle valve sleeve connecting ring 311, the spring 5 is jointed with the piston rod 4, and a reset force is provided when reset action is performed.
The middle valve sleeve 3 is made of stainless steel materials, and the guide conical surface 301 and the annular surface 302 of the middle valve sleeve are matched with the connecting ring of the connecting groove 105, so that the middle valve sleeve is convenient to assemble and disassemble.
The first sealing bevel 306 of the middle valve sleeve is attached to the piston conical surface 203 to form a seal when reversing. The middle valve sleeve first step 307, the middle valve sleeve second inclined surface 308 and the middle valve sleeve second step 309 serve as guiding functions.
The middle valve sleeve connecting ring 311 is matched with the lower valve sleeve 6, and the first sealing inclined surface 306 of the middle valve sleeve and the second sealing inclined surface 310 of the middle valve sleeve are 35 degrees with the axial horizontal direction.
The outer circumferential surface of the piston rod 4 is sequentially provided with a piston rod guide part 401, a piston rod mounting groove 402, a piston rod waist-shaped hole 403, a piston rod conical surface 404, a piston rod limiting groove 405 and a piston rod snap ring groove 406, wherein the piston rod guide part 401 is of an inclined surface structure, the section of the piston rod mounting groove 402 is of a U-shaped structure, the middle part of the piston rod 4 protrudes outwards to form a piston rod bulge, the piston rod conical surface 404 is of an inclined structure and is positioned on the piston rod bulge, the piston rod limiting groove 405 is connected with the end part of the spring 5, and the snap ring 7 is sleeved in the piston rod snap ring groove 406.
The piston rod waist-shaped holes 403 are distributed on the outer surface of the piston rod 4, the end part of the piston rod 4 is concaved into the piston rod end part hole, and the piston rod end part hole is communicated with the piston rod waist-shaped holes 403.
The snap ring 7 is matched with the piston rod snap ring groove 406, so that radial runout of the piston rod 4 is reduced, and the movement stability of the piston rod 4 is enhanced.
The vertical projection of the middle valve sleeve liquid inlet 304 is positioned in the waist-shaped hole section of the piston rod waist-shaped hole 403 during the valve core reversing action, and the middle valve sleeve buffer surface 305 is a curved buffer surface, so that the hydraulic impact is reduced. The second sealing ramp 310 of the middle valve sleeve engages the piston rod cone 404 during the reset action to form a seal.
The piston rod conical surface 404 forms a seal with the second sealing inclined surface 310 of the middle valve sleeve when the reset action is performed, and the piston rod limiting groove 405 is matched with the spring 5 to provide reset force.
The lower valve sleeve 6 is of a revolving body structure, an outer sealing groove of the lower valve sleeve is formed in the outer circumferential surface of the lower valve sleeve 6, an inner sealing groove of the lower valve sleeve is formed in the inner surface of the lower valve sleeve 6, and sealing rings are respectively sleeved in the outer sealing groove of the lower valve sleeve and the inner sealing groove of the lower valve sleeve.
The sealing conical surface arranged on the middle valve sleeve 3 adopts a hard sealing mode, a valve seat is canceled, thread machining is canceled, the number of parts and machining difficulty are reduced, meanwhile, the integral assembly coaxiality of the sealing surface and the piston rod 4 is improved, the sealing performance of the reversing valve is further improved, the stability of reversing working conditions is enhanced, the production cost is reduced, and the production assembly efficiency is improved. The upper valve sleeve 1 is provided with a pressure equalizing groove 102, so that the stability of the whole movement is improved. The utility model has simple, reasonable and compact structure, convenient installation and disassembly and convenient maintenance, and is suitable for long-term use and operation in a severe underground working environment with complex conditions.
In the utility model, in the initial position, the liquid return hole 104 is communicated with the piston rod waist-shaped hole 403, and after liquid enters from the end part of the piston rod 4, the liquid flows out from the liquid return hole 104 through the piston rod waist-shaped hole 403. When reversing is needed, liquid is introduced from the pilot control port 101, the liquid pushes the piston 2 and the piston rod 4 to move, the spring 5 compresses, the piston 2 blocks the liquid return hole 104, and the middle valve sleeve liquid inlet hole 304 is communicated with the piston rod waist-shaped hole 403. After entering from the end of the piston rod 4, the liquid sequentially passes through the piston rod waist-shaped hole 403 and the middle valve sleeve liquid inlet hole 304, and the reversing is completed.
Those of ordinary skill in the art will recognize that the embodiments described herein are for the purpose of aiding the reader in understanding the principles of the present utility model and should be understood that the scope of the utility model is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific modifications and combinations from the teachings of the present disclosure without departing from the spirit thereof, and such modifications and combinations remain within the scope of the present disclosure.
Claims (8)
1. A make things convenient for hard seal liquid accuse switching-over valve of dismouting which characterized in that: including last valve pocket (1), well valve pocket (3) and lower valve pocket (6) that connect gradually, be equipped with piston (2) in going up valve pocket (1), be equipped with piston rod (4) in piston (2), the other end of piston rod (4) wears to locate well valve pocket (3) and lower valve pocket (6), the cover is equipped with spring (5) on piston rod (4), spring (5) are located between well valve pocket (3) and lower valve pocket (6), the tip cover of piston rod (4) is equipped with snap ring (7), piston (2) and piston rod (4) synchronous motion.
2. The easy-to-disassemble hard-seal pilot operated directional control valve of claim 1, wherein: the upper valve sleeve (1) is of a revolving body structure, a pilot control port (101) and a pressure equalizing groove (102) are arranged on the end face of the upper valve sleeve (1), the pressure equalizing groove (102) is of a circular structure, and the pilot control port (101) penetrates through the end face of the upper valve sleeve (1); the outer circumferential surface of the upper valve sleeve (1) is provided with a sealing groove (103), the cross section of the sealing groove (103) is of a U-shaped structure, the outer circumferential surface of the upper valve sleeve (1) is provided with a liquid return hole (104), and the liquid return hole (104) is communicated with the inside and the outside of the upper valve sleeve (1); a connecting groove (105) is concavely formed on the end surface of the upper valve sleeve (1), and the end part of the middle valve sleeve (3) is positioned in the connecting groove (105) and is abutted with the upper valve sleeve (1).
3. The easy-to-disassemble hard-seal pilot operated directional control valve of claim 2, wherein: the liquid return holes (104) are circumferentially distributed on the outer surface of the upper valve sleeve (1).
4. The easy-to-disassemble hard-seal pilot operated directional control valve of claim 1, wherein: the piston (2) is of a revolving structure, the end part of the piston (2) is a piston guide surface (201), the piston guide surface (201) is of an inclined surface structure, a piston installation groove (202) is concaved inwards on the outer circumferential surface of the piston (2), the other end of the piston (2) is inclined to form a piston conical surface (203), and the piston conical surface (203) is abutted with the middle valve sleeve (3) when the piston (2) moves.
5. The easy-to-disassemble hard-seal pilot operated directional control valve of claim 1, wherein: the middle valve sleeve (3) is of a hollow revolving body structure, a middle valve sleeve guide conical surface (301), a middle valve sleeve annular surface (302), a middle valve sleeve installation groove (303), a middle valve sleeve liquid inlet hole (304) and a middle valve sleeve buffer surface (305) are sequentially arranged on the outer surface of the middle valve sleeve (3), the middle valve sleeve guide conical surface (301) is connected with the middle valve sleeve annular surface (302), the section of the middle valve sleeve installation groove (303) is U-shaped, the middle valve sleeve liquid inlet hole (304) is communicated with the inner part and the outer part of the middle valve sleeve (3), the axis of the middle valve sleeve liquid inlet hole (304) is mutually perpendicular to the axis of the middle valve sleeve, and the section of the middle valve sleeve buffer surface (305) is U-shaped.
6. The easy-to-disassemble hard-seal pilot operated directional control valve of claim 1, wherein: the inner part of the middle valve sleeve (3) is provided with a middle valve sleeve first sealing inclined surface (306), a middle valve sleeve first step (307), a middle valve sleeve second inclined surface (308), a middle valve sleeve second step (309) and a middle valve sleeve second sealing inclined surface (310) which are sequentially connected, the end part of the middle valve sleeve (3) is inwards concave to form a middle valve sleeve connecting ring (311), the section of the middle valve sleeve connecting ring (311) is of an L-shaped structure, and when the piston (2) moves, the middle valve sleeve first sealing inclined surface (306) is abutted with the piston (2), and the middle valve sleeve connecting ring (311) is matched with the lower valve sleeve (6).
7. The easy-to-disassemble hard-seal pilot operated directional control valve of claim 1, wherein: the piston rod is characterized in that a piston rod guide part (401), a piston rod mounting groove (402), a piston rod waist-shaped hole (403), a piston rod conical surface (404), a piston rod limiting groove (405) and a piston rod clamping ring groove (406) are sequentially arranged on the outer circumferential surface of the piston rod (4), the piston rod guide part (401) is of an inclined surface structure, the section of the piston rod mounting groove (402) is of a U-shaped structure, the middle part of the piston rod (4) protrudes outwards to form a piston rod bulge, the piston rod conical surface (404) is located on the piston rod bulge for the inclined structure, the piston rod limiting groove (405) is connected with the end part of the spring (5), and the clamping ring (7) is sleeved in the piston rod clamping ring groove (406).
8. The easy-to-disassemble hard-seal pilot operated directional control valve of claim 1, wherein: the lower valve sleeve (6) is of a revolving body structure, an outer sealing groove of the lower valve sleeve is formed in the outer circumferential surface of the lower valve sleeve (6), an inner sealing groove of the lower valve sleeve is formed in the inner surface of the lower valve sleeve (6), and sealing rings are respectively sleeved in the outer sealing groove of the lower valve sleeve and the inner sealing groove of the lower valve sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320782273.0U CN219317301U (en) | 2023-04-11 | 2023-04-11 | Make things convenient for hard seal liquid accuse switching-over valve of dismouting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320782273.0U CN219317301U (en) | 2023-04-11 | 2023-04-11 | Make things convenient for hard seal liquid accuse switching-over valve of dismouting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219317301U true CN219317301U (en) | 2023-07-07 |
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ID=87035829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320782273.0U Active CN219317301U (en) | 2023-04-11 | 2023-04-11 | Make things convenient for hard seal liquid accuse switching-over valve of dismouting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219317301U (en) |
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2023
- 2023-04-11 CN CN202320782273.0U patent/CN219317301U/en active Active
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