CN210034008U - Hydraulic system for automatically controlling molten iron amount - Google Patents
Hydraulic system for automatically controlling molten iron amount Download PDFInfo
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- CN210034008U CN210034008U CN201921949238.3U CN201921949238U CN210034008U CN 210034008 U CN210034008 U CN 210034008U CN 201921949238 U CN201921949238 U CN 201921949238U CN 210034008 U CN210034008 U CN 210034008U
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Abstract
The utility model provides a hydraulic system for automatically controlling molten iron amount, which comprises a hydraulic cylinder, an oil supply tank and a hydraulic pump, wherein the hydraulic cylinder comprises a rodless cavity and a rod cavity, and the hydraulic cylinder is connected with a sliding water gap mechanism; the rodless cavity and the rod cavity are communicated with an oil supply tank through a hydraulic pump, a first electromagnetic reversing valve is communicated between the rodless cavity and the hydraulic pump, and a second electromagnetic reversing valve is communicated between the rod cavity and the hydraulic pump; an oil discharge tank is also communicated between the first electromagnetic directional valve and the second electromagnetic directional valve; a first electromagnetic pressure reducing valve is communicated between the first electromagnetic reversing valve and the second electromagnetic reversing valve, and the other end of the first electromagnetic pressure reducing valve is communicated with the hydraulic pump; a first pressure gauge is arranged between the first electromagnetic directional valve and the first electromagnetic pressure reducing valve, and the second electromagnetic directional valve and the first electromagnetic pressure reducing valve are in communication connection; a controller in communication connection with the first electromagnetic reversing valve and the second electromagnetic reversing valve is arranged between the first electromagnetic reversing valve and the second electromagnetic reversing valve, and a flow sensor in communication connection with the controller is arranged at the sliding water gap mechanism.
Description
Technical Field
The utility model relates to a hydraulic system technical field especially relates to an automatic hydraulic system for control molten iron volume.
Background
In the metallurgical industry, a ladle turret is an important device in a continuous casting machine, a sliding gate hydraulic cylinder on the device has the functions of shutting off and opening molten iron in a large containing cavity to be poured into a tundish downwards, and the flow of the molten iron is controlled by moving the sliding gate, so that a hydraulic system for driving the sliding gate plays an extremely important role in controlling the flow of the molten iron.
If the hydraulic system is subjected to pipe explosion due to high temperature and high pressure, the hydraulic cylinder is out of control, molten iron overflows, and safety accidents are caused. Therefore, it is necessary to design a hydraulic system for automatically controlling the amount of molten iron, which can ensure the pressure stability of the hydraulic system, avoid tube explosion, and is safe and reliable.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic hydraulic system for control molten iron volume, it is through setting up decompression loop, effectively guarantees hydraulic system's pressure stability, avoids taking place the tube burst, safe and reliable.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a hydraulic system for automatically controlling the amount of molten iron comprises a hydraulic cylinder, an oil supply tank and a hydraulic pump, wherein the hydraulic cylinder comprises a rodless cavity and a rod cavity for a piston rod to slide, and the piston rod of the hydraulic cylinder is connected with a sliding water gap mechanism; the rodless cavity and the rod cavity are communicated with an oil supply tank through a hydraulic pump, a first electromagnetic reversing valve is communicated between the rodless cavity and the hydraulic pump, and a second electromagnetic reversing valve is communicated between the rod cavity and the hydraulic pump; an oil discharge tank is communicated between the first electromagnetic reversing valve and the second electromagnetic reversing valve; a first electromagnetic pressure reducing valve is communicated between the first electromagnetic reversing valve and the second electromagnetic reversing valve, and the other end of the first electromagnetic pressure reducing valve is communicated with a hydraulic pump; a first pressure gauge is arranged between the first electromagnetic directional valve and the first electromagnetic pressure reducing valve, and is in communication connection with the first electromagnetic pressure reducing valve; and a controller in communication connection with the first electromagnetic reversing valve and the second electromagnetic reversing valve is arranged between the first electromagnetic reversing valve and the second electromagnetic reversing valve, and a flow sensor in communication connection with the controller is arranged at the sliding water gap mechanism.
By adopting the technical scheme, the flow sensor is in communication connection with the controller, the communication connection is in communication connection with the first electromagnetic valve and the second electromagnetic valve, the flow sensor feeds the molten iron flow back to the controller, and the controller controls and adjusts the first electromagnetic directional valve and the second electromagnetic directional valve according to signals, so that the oil inlet and outlet conditions of the rod cavity and the rodless cavity are realized, the movement of the sliding gate mechanism is adjusted by controlling the reciprocating movement of the piston rod, and the control on the molten iron flow is realized. Wherein, set up first electromagnetism relief pressure valve on oil feed way, and pressure signal control that first electromagnetism relief pressure valve passes through first manometer feedback realizes the decompression and the pressure regulating effect to oil feed way, effectively guarantees hydraulic system's pressure stability, avoids among the oil circuit high pressure to lead to bursting easily, safe and reliable.
Furthermore, one end of the hydraulic pump, which is far away from the oil supply tank, is connected with a second electromagnetic pressure reducing valve communicated with the oil supply tank, and the hydraulic pump, the electromagnetic pressure reducing valve and the oil supply tank can form a loop; and a second pressure gauge is arranged between the first electromagnetic directional valve and the rodless cavity, a third pressure gauge is arranged between the second electromagnetic directional valve and the rod cavity, and the second pressure gauge and the third pressure gauge are in communication connection with a second electromagnetic pressure reducing valve.
By adopting the technical scheme, when the first speed reduction and pressure regulation valve breaks down or cannot meet the pressure reduction requirement, the on-off of the second electromagnetic pressure reduction valve is controlled according to the pressure signal fed back by the second pressure gauge and the third pressure gauge, the pressure of the whole hydraulic system is further regulated and controlled, and the safety and the stability during the regulation of the flow of molten iron are ensured. Meanwhile, the pressure relief effect can be achieved on the hydraulic pump, and the hydraulic pump is effectively protected. And the second pressure gauge and the third pressure gauge are arranged at the position close to the hydraulic cylinder, and the pressure condition in the oil circuit of the whole hydraulic system can be mastered in time under the cooperation of the first pressure gauge, the second pressure gauge and the third pressure gauge, so that the hydraulic system is simple in structure and obvious in effect.
And a pressure switch is arranged between the second electromagnetic pressure reducing valve and the hydraulic pump, and the pressure switch is in communication connection with the second pressure gauge and the third pressure gauge.
By adopting the technical scheme, the opening and closing of the pressure switch and the on-off of the second electromagnetic pressure reducing valve are controlled according to the pressure signal fed back by the second pressure gauge and the third pressure gauge, so that the on-off of the pressure relief loop is realized. A pressure switch is added in front of the second electromagnetic pressure reducing valve, so that the second electromagnetic pressure reducing valve is prevented from working abnormally, the work of the whole hydraulic system is influenced, and the precaution protection effect is achieved.
Furthermore, a one-way valve is arranged between the first electromagnetic pressure reducing valve and the first electromagnetic reversing valve as well as between the first electromagnetic pressure reducing valve and the second electromagnetic reversing valve.
Through adopting above-mentioned technical scheme, the check valve guarantees that the fluid of following this department process can only be that the fuel feeding case flows, avoids fluid refluence to the fuel feeding incasement in, guarantees the stability of hydraulic system work, its simple structure, and the effect is obvious.
Further, a ball valve is arranged between the first electromagnetic pressure reducing valve and the hydraulic pump.
By adopting the technical scheme, the ball valve can control the on-off of oil between the hydraulic pump and the first electromagnetic pressure reducing valve, and when the hydraulic system works normally, the ball valve is in a normally open state, so that the smoothness of an oil way is ensured. When the hydraulic pump needs to be overhauled or replaced, the ball valve is closed, and oil leakage in the oil pipe is avoided.
Further, a first filter is arranged between the hydraulic pump and the oil supply tank.
Through adopting above-mentioned technical scheme, first filter filters the fluid that supplies the oil tank to flow in the hydraulic pump, avoids flowing in the fluid and influences the work of pneumatic cylinder in the pneumatic cylinder, and the wearing and tearing of aggravation pneumatic cylinder influence the life of pneumatic cylinder.
Further, an oil pump for communicating the oil leakage tank and the oil supply tank is arranged between the oil leakage tank and the oil supply tank.
Through adopting above-mentioned technical scheme, the oil pump circulates the oil solution of recovering in with the draining tank to the fuel feeding tank in, realizes the cyclic utilization of fluid, avoids extravagant, reduce cost, its simple structure, the effect is obvious.
Further, a second filter is arranged between the oil drain tank and the oil pump.
Through adopting above-mentioned technical scheme, under the filtering action of second filter, in avoiding the debris of piston rod adhesion to sneak into the fuel feeding tank after in the fluid, influence the quality of fluid, avoid the work burden of aggravating first filter simultaneously, its simple structure, the effect is obvious.
To sum up, the utility model discloses following beneficial effect has:
1. the first electromagnetic pressure reducing valve controlled by a pressure signal fed back by a first pressure gauge is arranged in the hydraulic system, so that the pressure reducing and regulating effects on the oil inlet path are realized, the pressure stability of the hydraulic system is effectively ensured, the pipe explosion easily caused by overhigh pressure in the oil path is avoided, and the hydraulic system is safe and reliable;
2. through setting up second manometer, third manometer and rather than communication connection's second electromagnetic pressure reducing valve, when first speed reduction air-vent valve met the trouble or can't satisfy the decompression requirement, the regulation and control of second electromagnetic pressure reducing valve work pressure regulating, further assurance to whole hydraulic system pressure, security and stability when guaranteeing to adjust the molten iron flow.
Drawings
Fig. 1 is a schematic structural view of a hydraulic system for automatically controlling the amount of molten iron.
In the figure, 1, a hydraulic cylinder; 11. a rodless cavity; 12. a rod cavity; 13. a piston rod; 2. a sliding gate mechanism; 21. a flow sensor; 22. a controller; 3. an oil supply tank; 31. a first filter; 32. a hydraulic pump; 4. a first electromagnetic pressure reducing valve; 41. a first pressure gauge; 5. a one-way valve; 51. a ball valve; 6. an oil drain tank; 61. a second filter; 62. an oil pump; 7. a first electromagnetic directional valve; 71. a second pressure gauge; 8. a second electromagnetic directional valve; 81. a third pressure gauge; 9. a second electromagnetic pressure reducing valve; 91. a pressure switch; 10. and (4) an oil pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
A hydraulic system for automatically controlling the amount of molten iron comprises a hydraulic cylinder 1, as shown in figure 1, which comprises a rodless chamber 11 and a rod chamber 12 for a piston rod 13 to slide back and forth. The end of the piston rod 13 is connected with a sliding nozzle mechanism 2, and the sliding nozzle mechanism 2 is provided with a flow sensor 21 for monitoring the flow of molten iron. The structures of the hydraulic cylinder 1 and the sliding gate mechanism 2 are the same as those in the prior art, and are not described in detail. As shown in fig. 1, the hydraulic pump system further includes a supply tank 3 and a hydraulic pump 32, the supply tank 3 is communicated with the hydraulic pump 32, and the hydraulic pump 32 is communicated with the rod-less chamber 11 and the rod-containing chamber 12 of the hydraulic cylinder 1 through an oil pipe 10. Wherein, be equipped with first filter 31 between hydraulic pump 32 and fuel feed tank 3, filter the fluid that gets into in the oil circuit, avoid the work of the impurity influence pneumatic cylinder 1 in the fluid.
As shown in fig. 1, a first electromagnetic directional valve 7 is arranged between the rodless cavity 11 and the hydraulic pump 32, and an oil inlet of the first electromagnetic directional valve 7 communicates the hydraulic pump 32 and the rodless cavity 11; and a second electromagnetic directional valve 8 is arranged between the rod cavity 12 and the hydraulic pump 32, and an oil inlet of the second electromagnetic directional valve 8 is communicated with the hydraulic pump 32 and the rod cavity 12. As shown in fig. 1, oil outlets of the first electromagnetic directional valve 7 and the second electromagnetic directional valve 8 are communicated with the same oil drain tank 6 through an oil pipe 10. As shown in fig. 1, a controller 22 is further disposed between the first electromagnetic directional valve 7 and the second electromagnetic directional valve 8, and the flow sensor 21 is communicatively connected to the controller 22. Through the signal fed back by the flow sensor 21, the controller 22 controls the on-off of the first electromagnetic directional valve 7 and the second electromagnetic directional valve 8, controls the oil inlet of the rodless cavity 11 or the oil inlet of the rod cavity 12, and further controls the piston rod 13 to drive the sliding gate mechanism 2 to move back and forth, so that the control of the molten iron flow is realized. In the present embodiment, the first electromagnetic directional valve 7 and the second electromagnetic directional valve 8 are two-position three-way electromagnetic directional valves.
In order to achieve regulation and control of the pressure in the entire hydraulic system, as shown in fig. 1, a first electromagnetic pressure reducing valve 4 is communicated between a first electromagnetic directional valve 7 and a hydraulic pump 32, and a second electromagnetic directional valve 8 is also communicated with the first electromagnetic pressure reducing valve 4. The oil liquid flows to the first electromagnetic directional valve 7 or the second electromagnetic directional valve 8 after being decompressed through the first electromagnetic decompression valve 4, and the first electromagnetic decompression valve 4 is communicated with the oil drainage box 6. A first pressure gauge 41 is arranged among the first electromagnetic directional valve 7, the second electromagnetic directional valve 8 and the first electromagnetic pressure reducing valve 4, and the first pressure gauge 41 is in communication connection with the first electromagnetic pressure reducing valve 4. According to the signal that first manometer 41 feedbacks, the pressure regulating effect of control first electromagnetic pressure reducing valve 4 realizes the decompression and the pressure regulating effect to the oil inlet way, effectively guarantees hydraulic system's pressure stability, avoids among the oil circuit too high pressure to lead to the booster easily, safe and reliable.
In order to further ensure the stability of the operation of the entire hydraulic system, as shown in fig. 1, a second electromagnetic pressure reducing valve 9 communicated with the oil supply tank 3 is provided between the hydraulic pump 32 and the first electromagnetic pressure reducing valve 4, and the hydraulic pump 32, the second electromagnetic pressure reducing valve 9, and the oil supply tank 3 can form a circuit. A second pressure gauge 71 is arranged between the first electromagnetic directional valve 7 and the rodless cavity 11, a third pressure gauge 81 is arranged between the second electromagnetic directional valve 8 and the rod cavity 12, and the second pressure gauge 71 and the third pressure gauge 81 are in communication connection with the second electromagnetic pressure reducing valve 9. As shown in fig. 1, a pressure switch 91 is provided between the second electromagnetic pressure reducing valve 9 and the hydraulic pump 32, and the pressure switch 91 is in communication connection with the second pressure gauge 71 and the third pressure gauge 81.
As shown in fig. 1, when the first speed reducing and pressure regulating valve fails or fails to meet the pressure reducing requirement, the opening and closing of the pressure switch 91 and the opening and closing of the second electromagnetic pressure reducing valve 9 are controlled according to the pressure signals fed back by the second pressure gauge 71 and the third pressure gauge 81, so as to realize the opening and closing of the pressure relief loop. And part of oil flows back to the oil supply tank 3 from the second electromagnetic pressure reducing valve 9, so that the pressure of the whole hydraulic system is further regulated and controlled, and the safety and the stability during the adjustment of the flow of molten iron are ensured. Meanwhile, the pressure relief effect can be achieved on the hydraulic pump 32, and the hydraulic pump 32 is effectively protected.
As shown in fig. 1, a check valve 5 is arranged between the first electromagnetic pressure reducing valve 4, the first electromagnetic directional valve 7 and the second electromagnetic directional valve 8, so that the oil flowing out of the first electromagnetic pressure reducing valve 4 can only flow to the first electromagnetic directional valve 7 or the second electromagnetic directional valve 8, and the oil is prevented from flowing back to the hydraulic pump 32 to affect the stability of the whole hydraulic system. In addition, a ball valve 51 is arranged between the first electromagnetic pressure reducing valve 4 and the hydraulic pump 32, and when the hydraulic system works normally, the ball valve 51 is in a normally open state, so that the smoothness of an oil path is ensured. When the hydraulic pump 32 needs to be repaired or replaced, the ball valve 51 is closed to prevent oil in the oil pipe 10 from leaking.
In order to realize the recycling of the oil, as shown in fig. 1, the oil drainage tank 6 is connected with the oil supply tank 3 through an oil pipe 10, and a communicated oil pump 62 is arranged between the oil drainage tank 6 and the oil supply tank 3, so that the oil collected in the oil drainage tank 6 is guided into the oil supply tank 3 to be recycled under the action of the oil pump 62, the environment is protected, the energy is saved, and the cost is reduced. Wherein, be equipped with second filter 61 between draining case 6 and oil pump 62, under the filtering action of second filter 61, avoid on the piston rod 13 adhesion and get into in the debris in the fluid reentrant fuel feeding tank 3, guarantee the clean of fluid and alleviate the work load of first filter 31.
The utility model discloses a theory of operation and application method:
through the signal fed back by the flow sensor 21, the controller 22 controls the first electromagnetic directional valve 7 to be powered on and the second electromagnetic directional valve 8 to be powered off, or controls the first electromagnetic directional valve 7 to be powered off and the second electromagnetic directional valve 8 to be powered on. Under the action of the hydraulic pump 32, after the pressure of oil in the oil supply tank 3 is regulated by the first electromagnetic pressure reducing valve 4, the oil enters the rodless cavity 11 from the first electromagnetic directional valve 7 or enters the rod cavity 12 from the second electromagnetic directional valve 8, and then the piston rod 13 is controlled to drive the sliding nozzle mechanism 2 to reciprocate, so that the control of the flow of molten iron is realized. The first pressure gauge 41, the second pressure gauge 71 and the third pressure gauge 81 control the first electromagnetic pressure reducing valve 4 or the second electromagnetic pressure reducing valve 9 to work according to the detected pressure signal feedback, so that the stability, safety and reliability of the whole hydraulic system are guaranteed. And the oil in the oil drain tank 6 and the oil supply tank 3 is recycled under the action of the hydraulic pump 32 and the oil pump 62.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (8)
1. A hydraulic system for automatically controlling the amount of molten iron comprises a hydraulic cylinder (1), an oil supply tank (3) and a hydraulic pump (32), wherein the hydraulic cylinder (1) comprises a rodless cavity (11) and a rod cavity (12) for a piston rod (13) to slide, and the piston rod (13) of the hydraulic cylinder (1) is connected with a sliding water gap mechanism (2); the method is characterized in that: the rodless cavity (11) and the rod cavity (12) are communicated with the oil supply tank (3) through a hydraulic pump (32), a first electromagnetic reversing valve (7) is communicated between the rodless cavity (11) and the hydraulic pump (32), and a second electromagnetic reversing valve (8) is communicated between the rod cavity (12) and the hydraulic pump (32); an oil discharge tank (6) is communicated between the first electromagnetic directional valve (7) and the second electromagnetic directional valve (8); a first electromagnetic pressure reducing valve (4) is communicated between the first electromagnetic directional valve (7) and the second electromagnetic directional valve (8), and the other end of the first electromagnetic pressure reducing valve (4) is communicated with a hydraulic pump (32); a first pressure gauge (41) is arranged between the first electromagnetic directional valve (7) and the first electromagnetic pressure reducing valve (4) and between the second electromagnetic directional valve (8) and the first electromagnetic pressure reducing valve (4), and the first pressure gauge (41) is in communication connection with the first electromagnetic pressure reducing valve (4); a controller (22) in communication connection with the first electromagnetic reversing valve (7) and the second electromagnetic reversing valve (8) is arranged between the first electromagnetic reversing valve and the second electromagnetic reversing valve, and a flow sensor (21) in communication connection with the controller (22) is arranged at the position of the sliding water gap mechanism (2).
2. The hydraulic system for automatically controlling the amount of molten iron according to claim 1, wherein: one end, far away from the oil supply tank (3), of the hydraulic pump (32) is connected with a second electromagnetic pressure reducing valve (9) communicated with the oil supply tank (3), and the hydraulic pump (32), the electromagnetic pressure reducing valve and the oil supply tank (3) can form a loop; be equipped with second manometer (71) between first solenoid directional valve (7) and rodless chamber (11), second solenoid directional valve (8) and have and be equipped with third manometer (81) between pole chamber (12), second manometer (71) and third manometer (81) and second electromagnetic pressure reducing valve (9) communication connection.
3. The hydraulic system for automatically controlling the amount of molten iron according to claim 2, wherein: and a pressure switch (91) is arranged between the second electromagnetic pressure reducing valve (9) and the hydraulic pump (32), and the pressure switch (91) is in communication connection with a second pressure gauge (71) and a third pressure gauge (81).
4. The hydraulic system for automatically controlling the amount of molten iron according to claim 1, wherein: and a one-way valve (5) is arranged between the first electromagnetic pressure reducing valve (4) and the first electromagnetic directional valve (7) and between the first electromagnetic directional valve and the second electromagnetic directional valve (8).
5. The hydraulic system for automatically controlling the amount of molten iron according to claim 1 or 4, wherein: and a ball valve (51) is arranged between the first electromagnetic pressure reducing valve (4) and the hydraulic pump (32).
6. The hydraulic system for automatically controlling the amount of molten iron according to claim 1, wherein: a first filter (31) is arranged between the hydraulic pump (32) and the oil supply tank (3).
7. The hydraulic system for automatically controlling the amount of molten iron according to claim 1, wherein: an oil pump (62) communicated with the oil leakage tank (6) is arranged between the oil supply tank (3).
8. The hydraulic system for automatically controlling the amount of molten iron according to claim 7, wherein: and a second filter (61) is arranged between the oil leakage tank (6) and the oil pump (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921949238.3U CN210034008U (en) | 2019-11-13 | 2019-11-13 | Hydraulic system for automatically controlling molten iron amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921949238.3U CN210034008U (en) | 2019-11-13 | 2019-11-13 | Hydraulic system for automatically controlling molten iron amount |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210034008U true CN210034008U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921949238.3U Active CN210034008U (en) | 2019-11-13 | 2019-11-13 | Hydraulic system for automatically controlling molten iron amount |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210034008U (en) |
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2019
- 2019-11-13 CN CN201921949238.3U patent/CN210034008U/en active Active
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