CN212775060U - Hydraulic system of molten iron tipping device of electric furnace steel plant - Google Patents
Hydraulic system of molten iron tipping device of electric furnace steel plant Download PDFInfo
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- CN212775060U CN212775060U CN202021551720.4U CN202021551720U CN212775060U CN 212775060 U CN212775060 U CN 212775060U CN 202021551720 U CN202021551720 U CN 202021551720U CN 212775060 U CN212775060 U CN 212775060U
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- valve
- molten iron
- hydraulic cylinders
- electric furnace
- tipping device
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 10
- 239000010959 steel Substances 0.000 title claims abstract description 10
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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Abstract
The utility model relates to a hydraulic system of a molten iron tipping device of an electric furnace steel plant, which comprises two tipping hydraulic cylinders; the rodless cavities of the two tilting hydraulic cylinders converge to a main rodless cavity path through corresponding cartridge valves; the rod cavities of the two tilting hydraulic cylinders are converged to the main line of the rod cavity through the corresponding cartridge valves; the main paths of the rod cavity and the rodless cavity are provided with a superposed hydraulic control one-way valve connected with a proportional reversing valve; the proportional reversing valve is connected with the port P and the port T and is respectively connected with a pressure oil pipeline and an oil return pipeline; the pressure oil pipeline is connected with a control oil circuit of the cartridge valve through a two-position four-way electromagnetic directional valve; the two-position four-way electromagnetic directional valve can control the opening and closing of the cartridge valve, so as to control the operation of the rodless cavity.
Description
Technical Field
The utility model belongs to the iron and steel smelting field, concretely relates to molten iron tipper hydraulic control system.
Background
In a patent molten iron tipper hydraulic control system (patent number: CN207229491U), the original design and the utility model of the molten iron tipper hydraulic control system are basically composed of a hydraulic control one-way valve, a balance valve, a one-way throttle valve, a three-position four-way proportional reversing valve or an electro-hydraulic reversing valve at an oil cylinder, but have the following problems:
1. in the hydraulic control system patent of the molten iron dumping car, an emergency pipeline connected with a hose is arranged on the side of a rodless cavity of an oil cylinder, the emergency pipeline cannot be applied to an electric furnace molten iron dumping device, and due to great difference of field environments, the accident that the hose is burnt due to molten iron overflowing appears on the field for many times, if the emergency pipeline is burnt, the rodless cavity of the oil cylinder directly drains oil, and the dumping molten iron tank can fall down together with the oil cylinder to cause the accident.
2. If the valve core of the reversing valve is blocked in the hydraulic control system, the oil cylinder cannot be stopped, and the accidents of complete pouring of molten iron in the whole tank and falling of the molten iron are caused.
3. The balance valve in the hydraulic control system has relatively complex structure and multiple faults on the spot.
4. The locking loop is formed by the single hydraulic control one-way valve in the hydraulic control system, and the reliability is low for a 70T hot metal ladle.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the problems, the following technical scheme is adopted with confidence:
the utility model relates to a hydraulic system of a molten iron tipping device of an electric furnace steel plant, which comprises two tipping hydraulic cylinders; the rodless cavities of the two tilting hydraulic cylinders converge to a main rodless cavity path through corresponding cartridge valves; the rod cavities of the two tilting hydraulic cylinders are converged to the main line of the rod cavity through the corresponding cartridge valves; the main paths of the rod cavity and the rodless cavity are provided with a superposed hydraulic control one-way valve connected with a proportional reversing valve; the proportional reversing valve is connected with the port P and the port T and is respectively connected with a pressure oil pipeline and an oil return pipeline; the pressure oil pipeline is connected with a control oil circuit of the cartridge valve through a two-position four-way electromagnetic directional valve;
in the scheme, the rod-free and rod-free cavities of the two tilting hydraulic cylinders are connected with cartridge valves, namely 4 cartridge valves are used, a control oil path is additionally arranged on the cartridge valves through a pressure oil pipeline, and the cartridge valves on the valve blocks at the oil cylinders are independently controlled to be opened through a two-position four-way electromagnetic directional valve; in addition, in the scheme, a main loop control oil cylinder is formed by using a three-position four-way Y-shaped proportional reversing valve and a superposed hydraulic control one-way valve; the one-way throttle valve and the balance valve in the original hydraulic control system are removed, the fault points are reduced, and the structure is simplified.
In order to improve the safety performance of the cartridge valve, the utility model discloses a per two cartridge valves are connected with an overflow valve, and the overflow valve has played the effect of relief valve here.
In order to prevent the hose from being burnt out by the molten iron, the utility model discloses a two pneumatic cylinders of tumbling all adopt the hard tube to be connected with the valve block.
The utility model has the advantages that: the utility model discloses an electric stove steelmaking plant molten iron tipping device hydraulic system has following advantage: 1. the hydraulic control system is characterized in that double locking is formed by a locking valve block at the oil cylinder and a superposed hydraulic control one-way valve at the proportional reversing valve, and the oil cylinder cannot act no matter the proportional reversing valve of a main loop or the electromagnetic reversing valve of a control loop is abnormally opened or blocked; 2. the hose connected with the valve block at the position of the system pipeline and the oil cylinder is burnt due to production accidents, and the oil cylinder can be self-locked without causing accidents as long as the control oil way has no pressure; 3. compared with other valve groups, the cartridge valve has the advantages of simple structure, high through-flow capacity, good sealing performance and low failure rate.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a hydraulic system diagram of the present invention;
in the figure: 1. a proportional directional valve; 2. a hydraulic control check valve; 3. a cartridge valve; 4. an overflow valve; 5. a two-position four-way electromagnetic directional valve; 6. a one-way valve.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the utility model relates to a hydraulic system of a molten iron tipping device of an electric furnace steel plant, which comprises two tipping hydraulic cylinders; the rodless cavities of the two tilting hydraulic cylinders converge to a main rodless cavity path through corresponding cartridge valves; the rod cavities of the two tilting hydraulic cylinders are converged to a main pipeline with the rod cavity through the corresponding cartridge valves 3; a superposition type hydraulic control one-way valve 2 is arranged on the main path of the rod-free cavity and the main path of the rodless cavity and is connected with a proportional reversing valve 1; the proportional reversing valve 1 is connected with a P port and a T port and is respectively connected with a pressure oil pipeline and an oil return pipeline; the pressure oil pipeline is connected with a control oil way of the cartridge valve 3 through a two-position four-way electromagnetic directional valve 5;
in the scheme, the rod-free and rod-free cavities of the two tilting hydraulic cylinders are connected with cartridge valves, namely 4 cartridge valves are used, a control oil path is additionally arranged on the cartridge valves through a pressure oil pipeline, and the cartridge valves on the valve blocks at the oil cylinders are independently controlled to be opened through a two-position four-way electromagnetic directional valve; in addition, in the scheme, a main loop control oil cylinder is formed by using a three-position four-way Y-shaped proportional reversing valve and a superposed hydraulic control one-way valve; the one-way throttle valve and the balance valve in the original hydraulic control system are removed, the fault points are reduced, and the structure is simplified.
In order to improve the safety performance of the cartridge valve, the utility model discloses a per two cartridge valves 3 are connected with an overflow valve 4, and here overflow valve 4 has played the effect of relief valve.
In order to prevent the hose from being burnt out by the molten iron, the utility model discloses a two pneumatic cylinders of tumbling all adopt the hard tube to be connected with the valve block.
In addition, the valve block is connected with the oil cylinder by a hard pipe, and the system pipeline is connected with the valve block at the oil cylinder by a hose.
The utility model discloses a hydraulic system of a molten iron tipping device in an electric furnace steel plant, 1, the hydraulic control system forms double locking by a locking valve block at an oil cylinder and a superposed hydraulic control one-way valve at a proportional reversing valve, and the oil cylinder can not move no matter the proportional reversing valve of a main loop or an electromagnetic reversing valve of a control loop is abnormally opened or blocked; 2. the hose connected with the valve block at the position of the system pipeline and the oil cylinder is burnt due to production accidents, and the oil cylinder can be self-locked without causing accidents as long as the control oil way has no pressure; 3. compared with other valve groups, the cartridge valve has the advantages of simple structure, high through-flow capacity, good sealing performance and low failure rate.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. The hydraulic system of the molten iron tipping device of the electric furnace steel plant is characterized in that: comprises two tilting hydraulic cylinders;
the rodless cavities of the two tilting hydraulic cylinders converge to a main rodless cavity path through corresponding cartridge valves;
the rod cavities of the two tilting hydraulic cylinders are converged to the main line with the rod cavity through the corresponding cartridge valves;
the main paths of the rod cavity and the rodless cavity are provided with a superposed hydraulic control one-way valve connected with a proportional reversing valve;
the proportional reversing valve is connected with the port P and the port T and is respectively connected with a pressure oil pipeline and an oil return pipeline;
and the pressure oil pipeline is connected with a control oil circuit of the cartridge valve through a two-position four-way electromagnetic directional valve.
2. The electric furnace steel mill molten iron tipping device hydraulic system of claim 1, characterized in that: every two cartridge valves are connected with an overflow valve.
3. The electric furnace steel mill molten iron tipping device hydraulic system of claim 1, characterized in that: the two tilting hydraulic cylinders are connected with the valve block by hard pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021551720.4U CN212775060U (en) | 2020-07-30 | 2020-07-30 | Hydraulic system of molten iron tipping device of electric furnace steel plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021551720.4U CN212775060U (en) | 2020-07-30 | 2020-07-30 | Hydraulic system of molten iron tipping device of electric furnace steel plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212775060U true CN212775060U (en) | 2021-03-23 |
Family
ID=75049090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021551720.4U Active CN212775060U (en) | 2020-07-30 | 2020-07-30 | Hydraulic system of molten iron tipping device of electric furnace steel plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212775060U (en) |
-
2020
- 2020-07-30 CN CN202021551720.4U patent/CN212775060U/en active Active
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