CN220481590U - Valve core dismounting device of AGC cylinder hydraulic control valve - Google Patents
Valve core dismounting device of AGC cylinder hydraulic control valve Download PDFInfo
- Publication number
- CN220481590U CN220481590U CN202322034029.9U CN202322034029U CN220481590U CN 220481590 U CN220481590 U CN 220481590U CN 202322034029 U CN202322034029 U CN 202322034029U CN 220481590 U CN220481590 U CN 220481590U
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- connecting seat
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- 230000000903 blocking effect Effects 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model provides an AGC cylinder hydraulic control valve core dismounting device which comprises a drawing assembly, a blocking wire matched with the drawing assembly for use and a vacuum pump, wherein the blocking wire is in threaded fit with an oil outlet B; the drawing assembly comprises a sleeve, an inverted cone block, an expansion block, a handle and an auxiliary block, wherein the sleeve is of a small-diameter tubular structure, threads are turned on the outside of the sleeve, and two ends of the sleeve are communicated; the outer edge of the front end of the sleeve is welded with an inverted cone block, the large-diameter end of the inverted cone block is positioned at the front end, and the outer diameter of the large-diameter end is slightly smaller than the inner diameter of a valve core of the hydraulic control valve; the middle part cover of sheathed tube is established a connecting seat, connecting seat and sleeve pipe threaded connection, two straight connecting rods that stretch out to the back taper piece are connected to the connecting seat, and a fixed connection piece that rises at the front end of connecting rod, still a fixed mounting handle on the connecting seat. The hydraulic control valve core can be quickly and conveniently detached from the valve seat, so that the replacement efficiency of the valve core is remarkably improved, and the production continuity is improved.
Description
Technical Field
The utility model relates to the technical field of steel rolling equipment, in particular to a valve core dismounting device of an AGC cylinder hydraulic control valve.
Background
The hydraulic AGC system, namely the hydraulic pressing system, is an extremely important component part in the automatic control of a hot continuous rolling finishing mill group and is also a main means for improving the full-length thickness precision of the hot rolled strip steel. The hydraulic AGC system has the advantages of high precision, small inertia, high response speed, accurate control, simple and flexible operation, safety, reliability and the like, and has become a new development direction of a rolling mill thickness control system.
The hydraulic AGC system adjusts the flow and pressure of the hydraulic cylinder through the hydraulic control valve group so as to control the stroke of the hydraulic cylinder moving up and down, so that the roller moves up and down to finish the adjustment of the roller gap of the roller, and further the thickness control of the plate is realized. The hydraulic control valve is an important part in the hydraulic AGC system, and is mainly used for locking the hydraulic cylinder and preventing free falling as a guarantee for vertically using the hydraulic cylinder. The hydraulic control valve is arranged on a hydraulic cylinder valve table, and is generally a cartridge valve, and comprises a cover pad, a valve sleeve, a valve core, a spring, a sealing element and the like. As shown in fig. 1, the valve core of the hydraulic control valve is in a conical structure, the conical degree is matched with the oil inlet hole, the inner cavity is cylindrical, and the inner cavity is locked by a gland after a spring is arranged in the inner cavity; hydraulic oil enters the valve core from the oil inlet A and flows out from the oil outlet B.
In use, if the cartridge valve breaks down, such as the valve core is blocked, the spring is damaged or broken, the contact end is worn after the operation time is long, the valve core is scratched due to more oil impurities, and the like, the internal leakage is overlarge, the position of the hydraulic cylinder cannot be controlled, the hydraulic cylinder is deviated to one side, the rolling force deviation is large, hidden danger of strip steel side waves, strip breakage and scrap steel exists, and the hydraulic control valve is required to be detached for repair or replacement according to the situation. However, when the valve core is detached, the damping belt exists, the inner surface of the valve core is smooth, no stress point exists, and the valve core is smoother under oil lubrication, so that the valve core cannot be detached from the valve seat quickly, various tools are needed to be used, the oil is repeatedly wiped, the detachment time is long, and the production continuity is seriously affected.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model aims to provide a valve core dismounting device of an AGC cylinder hydraulic control valve.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the valve core dismounting device of the AGC cylinder hydraulic control valve comprises a drawing assembly, and a blocking wire and a vacuum pump which are matched with the drawing assembly for use, wherein the blocking wire is in threaded fit with an oil outlet B; the drawing assembly comprises a sleeve, an inverted cone block, an expansion block, a handle and an auxiliary block, wherein the sleeve is of a small-diameter tubular structure, threads are turned on the outside of the sleeve, and two ends of the sleeve are communicated; an inverted cone block is coaxially welded at the outer edge of the front end of the sleeve, the large-diameter end of the inverted cone block is positioned at the front end, and the outer diameter of the large-diameter end is slightly smaller than the inner diameter of a valve core of the hydraulic control valve; a connecting seat is sleeved at the middle part of the sleeve, the connecting seat is in threaded connection with the sleeve, the connecting seat is connected with two straight connecting rods extending towards the back taper block, the front ends of the connecting rods are fixedly connected with an expansion block, and the expansion block can be inserted into a gap between the back taper block and the inner cavity of the valve core and clamped; and a handle is fixedly arranged on the connecting seat.
The utility model further improves that: one side of the expansion block, which is close to the back taper block, comprises a plane part for propping up the back end surface of the back taper block and a bevel part consistent with the taper of the back taper block, and the outer wall of the expansion block is parallel to the inner cavity wall of the valve core.
The utility model further improves that: the expansion blocks and the connecting rod are integrally molded through casting, and the two expansion blocks are symmetrically arranged on two sides of the sleeve.
The utility model further improves that: an auxiliary block is further arranged behind the connecting seat, and the auxiliary block is in threaded sleeve connection with the sleeve.
The utility model further improves that: the back taper block and the auxiliary block are coaxially arranged.
The utility model further improves that: and a quick connector for connecting the vacuum tube is arranged at the tail part of the sleeve.
By adopting the technical scheme, the utility model has the following technical progress:
the utility model discloses a valve core dismounting device of an AGC cylinder hydraulic control valve, which solves the problems of difficult clamping and dismounting of the valve core, can quickly and conveniently dismount the valve core of the hydraulic control valve from a valve seat, remarkably improves the replacement efficiency of the valve core and greatly improves the production continuity.
According to the utility model, a certain pressure is applied to the inverted cone block and the valve core by using the expansion block, so that the valve core, the expansion block and the inverted cone block bear the mutual pressure, the valve core, the expansion block and the inverted cone block are combined into a whole, then the vacuum pump is used for evacuating the internal air, the auxiliary block is used as a supporting point for pulling out the valve core, and the valve core is separated from the valve seat, so that the valve is simple and convenient, the disassembly speed is high, and the efficiency is high.
Drawings
FIG. 1 is a schematic diagram of a pilot operated valve;
FIG. 2 is a schematic diagram of the overall structure of the present utility model;
FIG. 3 is a schematic illustration of sizing of a back taper block;
in the figure, 1-valve core, 2, valve seat, 3, gland, 4, spring, 5, blocking wire, 6, vacuum pump, 7-1, sleeve, 7-2, back taper block, 7-3, connecting seat, 7-4, expansion block, 7-5, connecting rod, 7-6, handle, 7-7, auxiliary block, 7-8, quick connector, 8, vacuum tube, A, oil inlet, B, oil outlet.
Detailed Description
The present utility model will be described in detail below with reference to the accompanying drawings.
The valve core dismounting device of the AGC cylinder hydraulic control valve comprises a drawing assembly, a wire blocking 5 matched with the drawing assembly and a vacuum pump 6 as shown in fig. 2. The drawing assembly comprises a sleeve 7-1, an inverted cone block 7-2, an expansion block 7-4, a handle 7-6 and an auxiliary block 7-7, and is used for connecting and drawing out the valve core 1; the blocking wire 5 is used for blocking the oil outlet B, and the vacuum pump 6 is combined with the drawing assembly to provide vacuum.
The sleeve 7-1 is of a steel small-diameter tubular structure, and threads are arranged outside the sleeve 7-1 in a turning mode. The front end outer edge of the sleeve 7-1 is welded with an inverted cone block 7-2, and the sleeve 7-1 penetrates through the center of the inverted cone block 7-2 to ensure that the two ends of the sleeve 7-1 are penetrated. The large-diameter end of the inverted cone block 7-2 is positioned at the front end, and the outer diameter of the large-diameter end is slightly smaller than the inner diameter of the valve core 1 of the hydraulic control valve. A connecting seat 7-3 is sleeved at the middle part of the sleeve 7-1, and the connecting seat 7-3 is in threaded connection with the sleeve 7-1. The connecting seat 7-3 is connected with two straight connecting rods 7-5 extending towards the inverted cone block 7-2, the front ends of the connecting rods 7-5 are respectively and fixedly connected with an expansion block 7-4, and the two expansion blocks 7-4 are symmetrically arranged on two sides of the sleeve 7-1. The inner side of the expansion block 7-4 is close to the back taper block 7-2 and comprises a plane part for propping up the back end face of the back taper block 7-2 and a bevel part consistent with the taper of the back taper block 7-2, and the outer wall of the expansion block 7-4 is parallel to the inner cavity wall of the valve core 1, so that the expansion block 7-4 can be tightly inserted between the inner cavity of the valve core 1 and the back taper block 7-2 and clamped; because the two expansion blocks 7-4 are symmetrically arranged, pressure can be uniformly applied to the valve core and the valve core can be uniformly clamped. The connecting seat 7-3 is fixedly provided with a handle 7-6, and a worker can hold the handle 7-6 to push the expansion block 7-4 forwards in a spiral manner.
Preferably, the expansion block 7-4 and the connecting rod 7-5 are integrally formed by casting, and the outer diameter of the connecting rod 7-5 is thinner, so that a small amount of deformation can be generated in the process that the expansion block 7-4 is gradually inserted into a gap between the inner cavity of the valve core 1 and the back taper block 7-2, and the expansion block 7-4 is fully ensured to fully extend into and be clamped.
The tail of the sleeve 7-1 is provided with a quick connector 7-8 for connecting the vacuum tube 8 so as to realize the quick connection between the sleeve 7-1 and the vacuum tube 8.
An auxiliary block 7-7 is further arranged between the connecting seat 7-3 and the quick connector 7-8, the auxiliary block 7-7 is in threaded sleeve connection with the sleeve 7-1, and the thickness of the auxiliary block 7-7 is larger than that of the connecting seat 7-3. The function of the auxiliary block 7-7 has three main aspects: firstly, the connecting seat 7-3 is tightly propped, and pressure is applied to the expansion block 7-4; secondly, the rotary loosening of the connecting seat 7-3 can be avoided during vacuumizing, and the tensioning state of the tensioning block 7-4 is ensured; third, a force bearing support is provided for the handles 7-6 during pulling.
Preferably, anti-skid patterns are arranged on the outer part of the handle 7-6 and the outer part of the auxiliary block 7-7.
The specific dimensions of the components of the utility model can be adjusted according to the dimensions of the hydraulic control valve. In this embodiment, the inner diameter d=32 mm of the valve element, the large diameter D of the back taper block Big size =26 mm to 28mm, minor diameter d Small size =20 mm to 22mm, thickness l=10 mm, taper=1: 1.2 to 1.6.
The working process of the utility model is as follows:
when the valve core is disassembled, the gland is firstly disassembled, the spring is taken out, the oil in the inner cavity of the valve core is wiped clean, and the oil outlet B is blocked by the blocking thread.
And (3) taking the drawing assembly, inserting the back taper block into the bottom of the inner cavity of the valve core and propping the back taper block, and enabling a worker to rotate by using a handle and push the expansion blocks to advance, so that the two expansion blocks are gradually inserted into a gap between the back taper block and the valve core until the valve core, the back taper block and the expansion blocks are completely pressed into a whole. And rotating the auxiliary block to enable the auxiliary block to advance spirally until the connecting block is compressed, and applying pressure to the expansion block. After the auxiliary block is in place, a vacuum tube connected with the vacuum pump is connected with a quick connector at the tail part of the sleeve, the vacuum pump is started to pump air in the inner cavity of the valve core, simultaneously, the handle is pulled outwards, and suction force and external pulling force caused by instant vacuum are applied to the valve core, so that the valve core is quickly separated from the valve seat, and quick disassembly of the valve core is realized.
After the disassembly is completed, the vacuum pump is turned off, the auxiliary block and the connecting seat are sequentially screwed outwards, and the expansion block is separated from the valve core and the inverted cone block, so that the drawing assembly can be separated from the valve core.
The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (6)
1. The utility model provides a AGC jar hydraulically controlled valve case dismounting device which characterized in that: the device comprises a drawing assembly, a blocking wire (5) and a vacuum pump (6), wherein the blocking wire (5) is matched with the drawing assembly in a threaded manner, and the oil outlet (B) is formed in the blocking wire;
the drawing assembly comprises a sleeve (7-1), an inverted cone block (7-2), an expansion block (7-4), a handle (7-6) and an auxiliary block (7-7), wherein the sleeve (7-1) is of a small-diameter tubular structure, threads are arranged on the outside of the sleeve (7-1) in a turning mode, and two ends of the sleeve (7-1) are communicated; an inverted cone block (7-2) is coaxially welded at the outer edge of the front end of the sleeve (7-1), the large-diameter end of the inverted cone block (7-2) is positioned at the front end, and the outer diameter of the large-diameter end is slightly smaller than the inner diameter of the valve core (1) of the hydraulic control valve; a connecting seat (7-3) is sleeved at the middle part of the sleeve (7-1), the connecting seat (7-3) is in threaded connection with the sleeve (7-1), the connecting seat (7-3) is connected with two straight connecting rods (7-5) which extend towards the back taper block (7-2), the front end of each connecting rod (7-5) is fixedly connected with an expanding block (7-4), and the expanding blocks (7-4) can be inserted into a gap between the back taper block (7-2) and the inner cavity of the valve core (1) and clamped; a handle (7-6) is fixedly arranged on the connecting seat (7-3).
2. The AGC cylinder pilot operated valve cartridge remover of claim 1 wherein: one side of the expansion block (7-4) close to the back taper block (7-2) comprises a plane part for propping up the back end face of the back taper block (7-2) and a bevel part consistent with the taper of the back taper block (7-2), and the outer wall of the expansion block (7-4) is parallel to the inner cavity wall of the valve core (1).
3. The AGC cylinder pilot operated valve cartridge remover of claim 2, wherein: the expansion blocks (7-4) and the connecting rod (7-5) are integrally molded through casting, and the two expansion blocks (7-4) are symmetrically arranged on two sides of the sleeve (7-1).
4. The AGC cylinder pilot operated valve cartridge removal apparatus of claim 3 wherein: an auxiliary block (7-7) is further arranged behind the connecting seat (7-3), and the auxiliary block (7-7) is in threaded sleeve connection with the sleeve (7-1).
5. The AGC cylinder pilot operated valve cartridge remover of claim 4 wherein: the back taper block (7-2) and the auxiliary block (7-7) are coaxially arranged.
6. The AGC cylinder pilot operated valve cartridge (1) dismounting device of claim 1, characterized in that: a quick connector (7-8) for connecting the vacuum tube (8) is arranged at the tail part of the sleeve (7-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322034029.9U CN220481590U (en) | 2023-07-31 | 2023-07-31 | Valve core dismounting device of AGC cylinder hydraulic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322034029.9U CN220481590U (en) | 2023-07-31 | 2023-07-31 | Valve core dismounting device of AGC cylinder hydraulic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220481590U true CN220481590U (en) | 2024-02-13 |
Family
ID=89840295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322034029.9U Active CN220481590U (en) | 2023-07-31 | 2023-07-31 | Valve core dismounting device of AGC cylinder hydraulic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220481590U (en) |
-
2023
- 2023-07-31 CN CN202322034029.9U patent/CN220481590U/en active Active
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