CN221003877U - Electrohydraulic control reversing valve - Google Patents
Electrohydraulic control reversing valve Download PDFInfo
- Publication number
- CN221003877U CN221003877U CN202322808157.4U CN202322808157U CN221003877U CN 221003877 U CN221003877 U CN 221003877U CN 202322808157 U CN202322808157 U CN 202322808157U CN 221003877 U CN221003877 U CN 221003877U
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- Prior art keywords
- valve
- seat
- sealing ring
- sleeve
- groove
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- 238000007789 sealing Methods 0.000 claims abstract description 50
- 210000001503 joint Anatomy 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model relates to an electrohydraulic control reversing valve. The utility model aims to provide an electro-hydraulic control reversing valve. The technical scheme adopted by the utility model comprises a valve sleeve, a seat sleeve, a valve seat, a slide valve, a piston rod, a reset spring, a front sealing ring, a rear sealing ring and a fastening screw, wherein a valve sleeve action cavity, a valve seat mounting groove and a seat sleeve embedding groove are sequentially arranged in the valve sleeve; the side wall of the seat sleeve is provided with a seat sleeve external thread and a screw limit groove. The utility model has the advantages that: the valve sleeve and the seat sleeve are tightly and firmly connected by the double locking connection mode of the screw matched fastening screw, looseness and false opening can be effectively prevented, the front end and the rear end of the threaded connection are respectively provided with a front sealing ring and a rear sealing ring, and the sealing waterproof performance is greatly improved.
Description
Technical Field
The utility model relates to an electrohydraulic control reversing valve.
Background
In the fully-mechanized mining face of the coal mine, the electrohydraulic control reversing valve is a hydraulic element which is necessary for operating and controlling the mining hydraulic support, and the quality of the electrohydraulic control reversing valve is related to the efficiency of the whole coal mining operation and even affects the safety production. The common electrohydraulic control reversing valve comprises a valve sleeve, a seat sleeve, a valve seat arranged in the valve sleeve and the seat sleeve, a slide valve and a piston rod, wherein the valve sleeve and the seat sleeve are connected generally only through threads, the waterproof sealing property is limited, water seepage is easy to occur during long-term use, the connection is not tight, the loosening and misoperation of outgoing lines are easy to occur, and therefore the service life of the whole product is not long, and the problem needs to be improved.
Disclosure of utility model
In order to solve the problems, the utility model aims to provide an electro-hydraulic control reversing valve.
The utility model discloses an electro-hydraulic reversing valve, which adopts the technical scheme that the electro-hydraulic reversing valve comprises a valve sleeve, a seat sleeve, valve seats, a slide valve, a piston rod and a return spring, wherein the valve seats, the slide valve, the piston rod and the return spring are arranged in the valve sleeve and the seat sleeve, and is characterized in that: the valve sleeve is internally provided with a valve sleeve action cavity for installing the slide valve, a valve seat installation groove for installing the valve seat and a seat sleeve embedding groove for installing the seat sleeve in sequence, the side wall of the valve seat installation groove is provided with a front seal ring positioning groove for installing the front seal ring, and the side wall of the seat sleeve embedding groove is provided with valve sleeve internal threads, a rear seal ring positioning groove for installing the rear seal ring and a screw first thread butt joint hole for screwing the fastening screw in sequence from inside to outside;
The side wall of the seat sleeve is provided with a seat sleeve external thread in threaded connection with the valve sleeve internal thread and a screw limit groove corresponding to the screw first thread butt joint hole.
The front end of the seat sleeve is provided with a seat sleeve abutting part corresponding to the valve seat mounting groove, the seat sleeve abutting part abuts against the rear end of the valve seat, and the front sealing ring positioning groove corresponds to the outer wall of the seat sleeve abutting part.
The spring positioning groove used for positioning the return spring is formed in the seat sleeve, the return spring is sleeved on the piston rod, one end of the return spring abuts against the right end of the piston rod, the other end of the return spring abuts against the spring positioning groove, and the piston rod and the valve seat form conical surface sealing when in contact.
The outer wall of the valve seat is also provided with a second sealing ring mounting groove, and a second sealing ring is arranged between the valve seat mounting groove and the second sealing ring mounting groove.
The front sealing ring, the rear sealing ring and the second sealing ring are made of nitrile rubber.
The width of the screw limit groove is the same as the inner diameter of the first thread butt joint hole of the screw.
The electro-hydraulic control reversing valve has the advantages that: the valve sleeve and the seat sleeve are tightly and firmly connected by the double locking connection mode of the screw matched fastening screw, loosening and false opening can be effectively prevented, the front end and the rear end of the threaded connection are respectively provided with the front sealing ring and the rear sealing ring, water is effectively prevented from entering and flowing out, and compared with the prior art, the sealing waterproof performance is greatly improved.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic view of the internal structure of an electro-hydraulic reversing valve of the present utility model;
fig. 2 is a cross-sectional view of the valve sleeve of the present utility model;
FIG. 3 is a cross-sectional view of the sleeve of the present utility model;
Fig. 4 is a cross-sectional view of a valve seat of the present utility model.
Detailed Description
As shown in fig. 1-4, the electro-hydraulic control reversing valve comprises a valve sleeve 1, a seat sleeve 2, a valve seat 3, a slide valve 4, a piston rod 5, a return spring 6, a front sealing ring 7, a rear sealing ring 8 and a fastening screw 9, wherein the valve seat 3, the slide valve 4, the valve seat 3, the seat sleeve and the seat sleeve are arranged in the valve sleeve 1, a valve seat mounting groove 11 for mounting the slide valve 4 and a seat sleeve mounting groove 12 for mounting the seat sleeve 2 are sequentially arranged in the valve sleeve 1, a front sealing ring positioning groove 14 for mounting the front sealing ring 7 is arranged on the side wall of the valve seat mounting groove 11, a valve sleeve internal thread 15, a rear sealing ring positioning groove 16 for mounting the rear sealing ring 8 and a screw first thread butt joint hole 17 for screwing the fastening screw 9 are sequentially arranged on the side wall of the seat sleeve mounting groove 12 from inside to outside; the seat cover 2 is provided with the seat cover external thread 21 which is in threaded connection with the valve cover internal thread 15 and the screw limit groove 22 which corresponds to the screw first thread butt joint hole 17, and the valve cover 1 and the seat cover 2 are tightly and firmly connected by a double locking connection mode of screw matching fastening screws, so that loosening and false opening can be effectively prevented, and the front end and the rear end of the threaded connection part are respectively provided with the front sealing ring 7 and the rear sealing ring 8, so that water is effectively prevented from entering and flowing out, and compared with the prior art, the sealing waterproof performance is greatly improved.
The seat cover 2 front end be equipped with seat cover interfacing part 20 corresponding with disk seat mounting groove 11, seat cover interfacing part 20 support the disk seat 3 rear end, preceding sealing washer constant head tank 14 with the seat cover interfacing part 20 outer wall is corresponding, can play fine spacing compaction effect to disk seat 3, and preceding sealing washer 7 also can be better plays first layer waterproof protection effect.
The inside of the seat cover 2 is provided with a spring positioning groove 24 for positioning the return spring 6, the return spring 6 is sleeved on the piston rod 5, one end of the return spring is propped against the right end of the piston rod 5, the other end of the return spring is propped against the spring positioning groove 24, and the piston rod 5 and the valve seat 3 form conical surface sealing when in contact, so that the sealing effect is good.
The outer wall of the valve seat 3 is also provided with a second sealing ring mounting groove 25, and a second sealing ring 10 is arranged between the valve seat mounting groove 11 and the second sealing ring mounting groove 25, so that the tightness of the product is further improved.
The front sealing ring 7, the rear sealing ring 8 and the second sealing ring 10 are made of nitrile rubber, so that the service life is longer.
The width of the screw limit groove 22 is the same as the inner diameter of the first thread butting hole 17 of the screw, so that the swing error of the fastening screw 9 is reduced, and the valve sleeve 1 and the seat sleeve 2 are tightly and firmly butted.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. The utility model provides an electrohydraulic control switching-over valve, includes valve pocket (1), seat cover (2), establishes valve pocket (1) with valve seat (3), slide valve (4), piston rod (5), reset spring (6) in seat cover (2), its characterized in that: the valve sleeve comprises a valve sleeve body, and is characterized by further comprising a front sealing ring (7), a rear sealing ring (8) and a fastening screw (9), wherein a valve sleeve action cavity (30) for installing a sliding valve (4), a valve seat installation groove (11) for installing a valve seat (3) and a seat sleeve imbedding groove (12) for installing a seat sleeve (2) are sequentially arranged in the valve sleeve (1), a front sealing ring positioning groove (14) for installing the front sealing ring (7) is arranged on the side wall of the valve seat installation groove (11), and valve sleeve internal threads (15), a rear sealing ring positioning groove (16) for installing the rear sealing ring (8) and a screw first thread butt joint hole (17) for screwing the fastening screw (9) are sequentially arranged on the side wall of the seat sleeve imbedding groove (12) from inside to outside;
The side wall of the seat sleeve (2) is provided with a seat sleeve external thread (21) in threaded connection with the valve sleeve internal thread (15), and a screw limit groove (22) corresponding to the screw first thread butt joint hole (17).
2. The electro-hydraulic reversing valve of claim 1, wherein: the front end of the seat cover (2) is provided with a seat cover abutting part (20) corresponding to the valve seat mounting groove (11), the seat cover abutting part (20) abuts against the rear end of the valve seat (3), and the front sealing ring positioning groove (14) corresponds to the outer wall of the seat cover abutting part (20).
3. The electro-hydraulic reversing valve of claim 1, wherein: the seat cover (2) is internally provided with a spring positioning groove (24) for positioning the return spring (6), the return spring (6) is sleeved on the piston rod (5), one end of the return spring is propped against the right end of the piston rod (5), the other end of the return spring is propped against the spring positioning groove (24), and the piston rod (5) and the valve seat (3) form conical surface sealing when in contact.
4. The electro-hydraulic reversing valve of claim 1, wherein: the outer wall of the valve seat (3) is also provided with a second sealing ring mounting groove (25), and a second sealing ring (10) is arranged between the valve seat mounting groove (11) and the second sealing ring mounting groove (25).
5. The electro-hydraulic reversing valve of claim 4, wherein: the front sealing ring (7), the rear sealing ring (8) and the second sealing ring (10) are made of nitrile rubber.
6. The electro-hydraulic reversing valve of claim 1, wherein: the width of the screw limit groove (22) is the same as the inner diameter of the first screw thread butt joint hole (17) of the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322808157.4U CN221003877U (en) | 2023-10-19 | 2023-10-19 | Electrohydraulic control reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322808157.4U CN221003877U (en) | 2023-10-19 | 2023-10-19 | Electrohydraulic control reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221003877U true CN221003877U (en) | 2024-05-24 |
Family
ID=91126190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322808157.4U Active CN221003877U (en) | 2023-10-19 | 2023-10-19 | Electrohydraulic control reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221003877U (en) |
-
2023
- 2023-10-19 CN CN202322808157.4U patent/CN221003877U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |