CN212716707U - Improved electro-hydraulic reversing valve core assembly - Google Patents
Improved electro-hydraulic reversing valve core assembly Download PDFInfo
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- CN212716707U CN212716707U CN202021323627.8U CN202021323627U CN212716707U CN 212716707 U CN212716707 U CN 212716707U CN 202021323627 U CN202021323627 U CN 202021323627U CN 212716707 U CN212716707 U CN 212716707U
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Abstract
The utility model relates to an improved generation electricity liquid switching-over valve case subassembly. The to-be-solved technical problem of the utility model is to provide a leakproofness is good, the installation is dismantled convenience, long service life's improved generation electricity liquid switching-over valve case subassembly. The utility model adopts the technical scheme that the valve sleeve comprises a screw sleeve, a valve sleeve, a seat sleeve, a valve seat, a slide valve, a piston rod, a spring and a small sealing ring, wherein the left end of the valve sleeve is provided with a valve sleeve mounting head, the valve sleeve mounting head is provided with a first sealing groove, the screw sleeve is provided with a valve sleeve mounting groove and a second sealing groove, O-shaped rings are arranged in the first sealing groove and the second sealing groove, the periphery of the screw sleeve is also provided with external threads, and the screw sleeve is fixed outside the valve; an action cavity, a valve seat mounting groove and a seat sleeve mounting groove are sequentially arranged in the valve sleeve. The utility model has the advantages that: the valve barrel and the threaded sleeve are connected in a hoop form, 360-degree rotation in the main valve body during installation or disassembly is avoided, and the phenomenon that two stainless steel threads are matched and easily 'seized' can be further avoided by adopting the copper threaded sleeve.
Description
Technical Field
The utility model relates to an improved generation electricity liquid switching-over valve case subassembly.
Background
In a coal mine fully-mechanized mining working face, an electro-hydraulic control reversing valve is a hydraulic element necessary for operating and controlling a mine hydraulic support, and the quality of the electro-hydraulic control reversing valve is related to the efficiency of the whole coal mining operation and even influences the safety production. The traditional electro-hydraulic control reversing valve core assembly is shown in figure 1, and has defects in the using process: 1. the valve sleeve is connected with the seat cover by four M3 set screws, when the valve core component is installed or disassembled in the main valve body, the whole set of valve core component rotates 360 degrees in the valve body, and the defects are that: if one set screw retreats out, the inner hole of the valve body can be scratched, and the whole main valve group is scrapped. The second defect is that: the radial sealing of the valve seat and the inner hole of the seat sleeve is realized by using a small sealing ring with the wire diameter of 1mm, and the gap between the excircle of the valve seat and the inner hole of the seat sleeve is not suitable for being sealed by using the sealing ring with the wire diameter of 1mm, so that the service life of the whole product can be influenced; 2 the installation is dismantled and is maintained inconveniently, and case subassembly leakproofness is poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the to-be-solved technical problem of the utility model is to provide a leakproofness is good, the installation is dismantled convenience, long service life's improved generation electricity liquid switching-over valve case subassembly.
The utility model discloses technical scheme that improved generation electricity liquid switching-over valve case subassembly adopted is characterized in that including swivel nut, valve barrel, seat cover, disk seat, slide valve, piston rod, spring and little sealing washer, the valve barrel left end is equipped with valve barrel installation head, be equipped with first seal groove on the valve barrel installation head, the swivel nut is equipped with valve barrel mounting groove and with the second seal groove that first seal groove corresponds, be equipped with O type circle in first seal groove with the second seal groove, the swivel nut periphery still is equipped with the external screw thread, the valve barrel installation head of valve barrel is arranged in the valve barrel mounting groove of swivel nut, the swivel nut is fixed outside the valve barrel through the clamp form again;
the valve seat is arranged in the valve seat mounting groove, an installation notch is formed in the valve seat, a small sealing ring is arranged on the installation notch, and the left end of the seat cover is arranged in the seat cover mounting groove and in threaded connection with the valve cover.
The slide valve is established the action intracavity, be equipped with in the slide valve the piston rod, piston rod right-hand member cover is equipped with the spring, the slide valve slide right with it is sealed that it constitutes the ladder face to constitute during the disk seat contact, the piston rod slide left with it is sealed to constitute the conical surface during the disk seat contact.
The screw sleeve is also provided with a guide conical surface which is convenient for the valve sleeve mounting head to be placed in.
The slide valve, the piston rod and the seat sleeve are all provided with annular grooves, sealing ring combinations are arranged in the annular grooves, and each sealing ring combination comprises a second sealing ring and a check ring.
The utility model discloses improved generation electricity liquid switching-over valve case subassembly's advantage lies in: threaded connection can effectively avoid holding screw to withdraw from fish tail main valve body hole between this structural design seat cover and the valve barrel, and the valve barrel adopts the clamp form to be connected with the swivel nut, 360 degrees rotations in the main valve body when avoiding the installation or dismantling, adopts the copper swivel nut can further avoid two stainless steel screw-thread cooperations easily "sting" phenomenon, and the valve barrel adopts the axial seal form with the disk seat in addition, can further guarantee the sealing performance of little sealing washer, makes whole life promote, and whole installation is dismantled and is become convenient and fast more.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of a valve core assembly of a conventional electro-hydraulic directional valve;
FIG. 2 is a schematic structural diagram of the improved electro-hydraulic directional valve core assembly of the present invention;
fig. 3 is a cross-sectional view of the valve housing of the present invention;
fig. 4 is a sectional view of the screw sleeve of the present invention;
fig. 5 is a cross-sectional view of the valve seat of the present invention;
fig. 6 is a cross-sectional view of the seat cover of the present invention.
Detailed Description
As shown in fig. 1-6, the utility model relates to an improved generation electricity liquid switching-over valve case subassembly, including swivel nut 1, valve barrel 2, seat cover 3, disk seat 4, slide valve 5, piston rod 6, spring 7 and little sealing washer 8, the valve barrel 2 left end is equipped with valve barrel installation head 11, be equipped with first seal groove 12 on the valve barrel installation head 11, swivel nut 1 is equipped with valve barrel installation groove 13 and the second seal groove 14 corresponding with first seal groove 12, be equipped with O type circle 9 in first seal groove 12 and the second seal groove 14, the swivel nut 1 periphery still is equipped with the external screw thread, the installation head 11 of valve barrel 2 is arranged in the valve barrel installation groove 13 of swivel nut 1, swivel nut 1 rethread clamp form is fixed outside the valve barrel 2; an action cavity 17, a valve seat mounting groove 18 and a seat sleeve mounting groove 19 are sequentially arranged in the valve sleeve 2, the valve seat 4 is arranged in the valve seat mounting groove 18, a mounting notch 20 is arranged on the valve seat 4, the small sealing ring 8 is arranged on the mounting gap 20, the left end of the seat sleeve 3 is arranged in the seat sleeve mounting groove 19 and is in threaded connection with the valve sleeve 2, the structure design that the threaded connection between the seat sleeve 3 and the valve sleeve 2 can effectively avoid the situation that a set screw exits from scratching the inner hole of the main valve body, the valve sleeve 2 is connected with the screw sleeve 1 in a hoop form, the situation that the valve sleeve rotates 360 degrees in the main valve body during installation or disassembly is avoided, the phenomenon that two stainless steel threads are easy to be seized due to matching can be further avoided by adopting the copper screw sleeve, in addition, the valve sleeve 2 and the valve seat 4 adopt an axial sealing mode, so that the sealing performance of the small sealing ring can be further ensured, the whole service life is prolonged, and the whole installation and disassembly are more convenient and faster.
The screw sleeve 1 is further provided with a guide conical surface 23 which is convenient for the valve sleeve mounting head 11 to be placed in, so that the mounting and dismounting are more convenient and faster.
The slide valve 5, the piston rod 6 and the seat sleeve 3 are all provided with annular grooves 25, sealing ring combinations 26 are arranged in the annular grooves 25, and the sealing ring combinations 26 comprise second sealing rings 27 and retainer rings 28, so that the sealing performance is further improved.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention are all included within the protection scope of the present invention.
Claims (4)
1. The utility model provides an improved generation electricity liquid switching-over valve case subassembly which characterized in that: the valve sleeve mounting structure comprises a screw sleeve (1), a valve sleeve (2), a seat sleeve (3), a valve seat (4), a sliding valve (5), a piston rod (6), a spring (7) and a small sealing ring (8), wherein a valve sleeve mounting head (11) is arranged at the left end of the valve sleeve (2), a first sealing groove (12) is formed in the valve sleeve mounting head (11), the screw sleeve (1) is provided with a valve sleeve mounting groove (13) and a second sealing groove (14) corresponding to the first sealing groove (12), an O-shaped ring (9) is arranged in the first sealing groove (12) and the second sealing groove (14), an external thread is further arranged on the periphery of the screw sleeve (1), the valve sleeve mounting head (11) of the valve sleeve (2) is arranged in the valve sleeve mounting groove (13) of the screw sleeve (1), and the screw sleeve (1) is fixed outside the valve sleeve (2) in;
be equipped with action chamber (17), disk seat mounting groove (18) and seat cover mounting groove (19) in proper order in valve barrel (2), disk seat (4) are arranged in disk seat mounting groove (18), be equipped with installation breach (20) on disk seat (4), establish little sealing washer (8) on installation breach (20), seat cover (3) left end place in seat cover mounting groove (19) and with valve barrel (2) threaded connection.
2. The improved electro-hydraulic directional valve cartridge assembly of claim 1, wherein: establish sliding valve (5) in action chamber (17), be equipped with in sliding valve (5) piston rod (6), piston rod (6) right-hand member cover is equipped with spring (7), sliding valve (5) slide right with it is sealed to constitute the ladder face during disk seat (4) contact, piston rod (6) slide left with it is sealed to constitute the conical surface during disk seat (4) contact.
3. The improved electro-hydraulic directional valve cartridge assembly of claim 1, wherein: the thread insert (1) is further provided with a guide conical surface (23) which is convenient for the valve sleeve mounting head (11) to be placed in.
4. The improved electro-hydraulic directional valve cartridge assembly of claim 1, wherein: the slide valve (5), the piston rod (6) and the seat sleeve (3) are all provided with annular grooves (25), sealing ring combinations (26) are arranged in the annular grooves (25), and the sealing ring combinations (26) comprise second sealing rings (27) and check rings (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021323627.8U CN212716707U (en) | 2020-07-08 | 2020-07-08 | Improved electro-hydraulic reversing valve core assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021323627.8U CN212716707U (en) | 2020-07-08 | 2020-07-08 | Improved electro-hydraulic reversing valve core assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212716707U true CN212716707U (en) | 2021-03-16 |
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ID=74977678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021323627.8U Active CN212716707U (en) | 2020-07-08 | 2020-07-08 | Improved electro-hydraulic reversing valve core assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212716707U (en) |
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2020
- 2020-07-08 CN CN202021323627.8U patent/CN212716707U/en active Active
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