CN219888386U - Explosion-proof type hydraulic system pipeline - Google Patents
Explosion-proof type hydraulic system pipeline Download PDFInfo
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- CN219888386U CN219888386U CN202321376093.9U CN202321376093U CN219888386U CN 219888386 U CN219888386 U CN 219888386U CN 202321376093 U CN202321376093 U CN 202321376093U CN 219888386 U CN219888386 U CN 219888386U
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- 239000003921 oil Substances 0.000 claims abstract description 177
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 74
- 241001125929 Trisopterus luscus Species 0.000 claims abstract description 13
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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Abstract
The utility model relates to an explosion-proof hydraulic system pipeline which comprises an electromagnetic directional valve, a hydraulic control one-way valve and a high-pressure hose, wherein an oil inlet P and an oil return port T of the electromagnetic directional valve are communicated with a hydraulic oil station; the hydraulic control one-way valve comprises an oil inlet port Pin, an oil outlet port Pout and a control port K, wherein the oil inlet port Pin is communicated to a first working oil port A of the electromagnetic directional valve through a high-pressure hose, the control port K is communicated to a second working oil port B of the electromagnetic directional valve through a control pipeline, and the oil outlet port Pout is communicated to an oil inlet and outlet of the oil cylinder. The utility model has the effect of avoiding the safety accident caused by the rupture of the high-pressure hose to the greatest extent.
Description
Technical Field
The utility model relates to the technical field of hydraulic control systems, in particular to an explosion-proof type hydraulic system pipeline.
Background
The induction furnace body is used for bearing molten steel, the furnace body is lifted and tilted by pushing hydraulic cylinders on two sides of the furnace body, and then the molten steel is poured into a ladle. Referring to fig. 1, the hydraulic cylinder is a single-acting plunger cylinder, and the flow direction of hydraulic oil in a hydraulic system pipeline is controlled through an electromagnetic directional valve. In general, the electromagnetic directional valve for control is provided with four communication ports, which are a first working oil port A, a second working oil port B, an oil inlet P and an oil outlet T respectively. The communication relation of each communication port is controlled by changing the position of the valve core in the electromagnetic reversing valve, so that the flow direction of hydraulic oil is controlled, and the oil cylinder can be in a locking state, a jacking state or a descending state. When the oil cylinder is in a locking state, the four communication ports are not communicated with each other; when the oil cylinder is in a jacking state, the oil inlet P is communicated with the first working oil port A, hydraulic oil in the hydraulic oil station is pumped into the cavity of the oil cylinder at high pressure, a piston rod is driven, the furnace body is jacked up, and the furnace body is jacked up and tumbled; when the oil cylinder is in a descending state, the oil inlet P is communicated with the first working oil port A, and hydraulic oil in the furnace body can be pressed back to the hydraulic oil station by means of the weight of the furnace body, so that the furnace body descends and tilts back. Because the position of the piston rod of the hydraulic cylinder changes in the ascending and descending actions, the hydraulic pump station is connected with the oil inlet and outlet of the hydraulic cylinder by adopting a high-pressure hose.
However, in practical application, the high-pressure hose is often burnt out by molten steel splashed in the furnace body, and is always in a high-temperature environment (molten steel in the furnace body), and the high-pressure hose is also very easy to age and break. When the furnace body is lifted and overturned, if the hose is suddenly broken, the whole furnace body and molten steel in the furnace body can be broken and even the molten steel is leaked because of sudden rapid falling of the oil cylinder under-pressure, thereby causing major production safety accidents.
Disclosure of Invention
In order to avoid safety accidents caused by the rupture of the high-pressure hose to the greatest extent, the utility model provides an explosion-proof hydraulic system pipeline.
The utility model provides an explosion-proof hydraulic system pipeline which adopts the following technical scheme:
an explosion-proof hydraulic system pipeline comprises an electromagnetic directional valve, a hydraulic control one-way valve and a high-pressure hose, wherein an oil inlet P and an oil return port T of the electromagnetic directional valve are communicated with a hydraulic oil station; the hydraulic control one-way valve comprises an oil inlet port Pin, an oil outlet port Pout and a control port K, wherein the oil inlet port Pin is communicated to a first working oil port A of the electromagnetic directional valve through the high-pressure hose, the control port K is communicated to a second working oil port B of the electromagnetic directional valve through a control pipeline, and the oil outlet port Pout is communicated to an oil inlet and outlet of the oil cylinder.
By adopting the technical scheme, when hydraulic oil is not input into the hydraulic control one-way valve through the control pipeline, the hydraulic control one-way valve is in a one-way conduction state, and at the moment, the hydraulic oil can only be output into the oil cylinder from the electromagnetic reversing valve, so that the lifting and tipping of the furnace body are realized; when hydraulic oil is input into the hydraulic control one-way valve through the control pipeline, the hydraulic control one-way valve is in a two-way conduction state, namely, the hydraulic oil in the oil cylinder can be reversely output to the electromagnetic directional valve through the hydraulic control one-way valve, so that the hydraulic oil flows back to the hydraulic oil station, and the falling and tilting back of the furnace body is realized.
Preferably, the electromagnetic directional valve controls the hydraulic control one-way valve to be in a one-way conduction state, the oil inlet P is communicated with the first working oil port A, the second working oil port B is communicated with the oil return port T, and hydraulic oil in the control pipeline flows back to the hydraulic oil station through the control pipeline, the second working oil port B and the oil return port T in sequence.
By adopting the technical scheme, the control pipeline is free of hydraulic oil as much as possible, so that the hydraulic control one-way valve can be kept in a one-way conduction state as much as possible, and hydraulic oil can only be output from the oil inlet port Pin to the oil outlet port Pout.
Preferably, when the hydraulic control one-way valve is in the one-way conduction state, the oil cylinder is in a jacking state, and hydraulic oil of the hydraulic oil station sequentially enters the oil cylinder through the oil inlet P, the first working oil port A, the high-pressure hose and the hydraulic control one-way valve.
Through adopting above-mentioned technical scheme, utilize the hydraulically controlled check valve that is in the unidirectional conduction state to make the hydraulic oil of hydraulic oil station can high pressure drive into in the hydro-cylinder to make the drive piston rod jack up the furnace body, make the molten steel in the furnace body can shift to in the ladle.
Preferably, the electromagnetic directional valve controls the hydraulic control one-way valve to be in a bidirectional conduction state, the oil inlet P is communicated with the second working oil port B, and the first working oil port A is communicated with the oil return port T; and hydraulic oil of the hydraulic oil station is sequentially output to the hydraulic control one-way valve through an oil inlet P, a second working oil port B and a control pipeline (5).
Through adopting above-mentioned technical scheme, make the hydraulic oil in the hydraulic pressure station can open for the hydraulically controlled check valve through the control pipeline, the hydraulic oil can export to the oil feed interface Pin from oil outlet port Pout this moment.
Preferably, when the hydraulic control one-way valve is in the bidirectional conduction state, the oil cylinder is in a descending state, and hydraulic oil of the oil cylinder sequentially enters the hydraulic oil station through the hydraulic control one-way valve (4), the high-pressure hose (3), the first working oil port A and the oil return port T.
Through adopting above-mentioned technical scheme, utilize the hydraulically controlled check valve that is in two-way on state to make the hydraulic oil in the hydro-cylinder can be through the high pressure line pressure back to in the hydraulic oil station under the effect of furnace body self weight to realize the decline of furnace body and return the slope.
Preferably, the electromagnetic directional valve controls the oil cylinder to be in a locking state, and the first working oil port A, the second working oil port B, the oil inlet P and the oil return port T are not communicated with each other.
By adopting the technical scheme, the hydraulic control one-way valve is in a one-way conduction state, and at the moment, hydraulic oil in the oil cylinder cannot flow back to the hydraulic oil station, so that the oil pressure in the oil cylinder tends to be stable, and the furnace body can be in a locking state and cannot act; when the high-pressure hose breaks, the oil cylinder is controlled to enter a locking state through the electromagnetic valve, so that safety accidents caused by the damage of the high-pressure hose are reduced to the greatest extent.
Preferably, the electromagnetic reversing valve is a three-position four-way electromagnetic valve.
By adopting the technical scheme, the three-position four-way electromagnetic valve can be utilized to fully provide four communication ports and three working states required by the embodiment of the utility model.
Preferably, when the electromagnetic directional valve is opened, the oil inlet P is in a normally open state.
Through adopting above-mentioned technical scheme, can realize the automatic output of the interior hydraulic oil of hydraulic oil station through the electromagnetic directional valve, improve work efficiency.
In summary, the present utility model includes at least one of the following beneficial technical effects:
the electromagnetic reversing valve is controlled to enable the oil cylinder to be in a jacking state or a descending state, so that jacking tilting or descending tilting back of the furnace body is realized, and molten steel in the furnace body can be poured into the steel ladle; meanwhile, the hydraulic control one-way valve is utilized to limit the backflow process of hydraulic oil in the oil cylinder, when the high-pressure hose can work normally, the hydraulic oil is output to the hydraulic control one-way valve through the electromagnetic reversing valve, and at the moment, the hydraulic oil in the oil cylinder can return normally; when the high-pressure hose breaks, the electromagnetic reversing valve is controlled to stop in a locking state to stop outputting hydraulic oil to the control pipeline, so that the hydraulic oil in the oil cylinder cannot be output from the hydraulic control one-way valve to the broken high-pressure hose, the furnace body stops moving, and safety accidents caused by the breakage of the high-pressure hose are avoided to the greatest extent.
Drawings
FIG. 1 is a structural connection diagram of a conventional hydraulic system line;
FIG. 2 is a structural connection diagram of an embodiment of the present utility model;
FIG. 3 is a structural connection diagram of an embodiment of the present utility model during the lifting of a tipping body;
FIG. 4 is a diagram showing the structural connection of the embodiment of the utility model during the lowering of the tilt-back furnace.
Reference numerals: 11. a piston rod; 12. a piston plate; 13. an oil cylinder cavity; 2. an electromagnetic reversing valve; 3. a high pressure hose; 4. a hydraulically controlled one-way valve; 5. and (5) controlling a pipeline.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-4.
Referring to fig. 1, a conventional hydraulic system pipeline includes an electromagnetic directional valve 2, and a first working oil port a of the electromagnetic directional valve 2 is connected to an oil inlet and outlet of an oil cylinder through a high-pressure hose 3, so as to control a flow direction of hydraulic oil, and further control lifting of a piston rod 11 of the oil cylinder, so that a furnace body performs a lifting and tilting or descending and tilting-back action. However, when the high-pressure hose 3 is burnt out by molten steel splashed in the furnace body or is broken by oxidation in a high-temperature environment for a long time, the whole furnace body and the molten steel in the furnace body are broken or even leaked due to sudden and rapid falling of the oil cylinder under-pressure, so that serious production safety accidents are easily caused.
The embodiment of the utility model discloses an explosion-proof hydraulic system pipeline.
Referring to fig. 2, an explosion-proof hydraulic system pipeline comprises a high-pressure hose 3, an electromagnetic directional valve 2 and a pilot operated check valve 4, wherein the electromagnetic directional valve 2 is used for controlling the output or stop outputting hydraulic oil of a hydraulic oil station. The oil cylinder is arranged on the ground, a piston rod 11 is arranged in the oil cylinder, and one end, far away from the ground, of the piston rod 11 is used for being connected with the furnace body. A piston plate 12 is arranged at one end of the piston rod 11 close to the ground, and a cylinder cavity 13 for containing hydraulic oil is arranged between the piston plate 12 and the cylinder inner wall positioned at one side of the piston plate 12 away from the piston rod 11. The bottom of the oil cylinder, which is close to the ground, is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are communicated with the oil cylinder cavity 13. One end of the high-pressure hose 3 is communicated to a first working oil port A of the electromagnetic directional valve 2, and the other end of the high-pressure hose 3 is communicated to an oil inlet and outlet through a hydraulic control one-way valve 4. A control pipeline 5 is also connected between the second working oil port B of the electromagnetic directional valve 2 and the hydraulic control one-way valve 4 and is used for controlling the conduction direction of the hydraulic control one-way valve 4. When the high-pressure hose 3 breaks, the electromagnetic directional valve 2 enables the hydraulic control one-way valve 4 to be only in one-way conduction, so that hydraulic oil in the oil cylinder cannot return to the hydraulic oil station, and safety accidents caused by the breakage of the high-pressure hose 3 are avoided to the greatest extent.
Referring to fig. 2, the pilot operated check valve 4 includes an oil inlet port Pin, an oil outlet port Pout, and a control port K for communicating with the control pipe 5. When no hydraulic oil is input to the hydraulic control one-way valve 4 through the control pipeline 5, the hydraulic control one-way valve 4 is in a one-way conduction state, and the hydraulic oil can only be output from the oil inlet port Pin to the oil outlet port Pout; when hydraulic oil is input into the hydraulic control one-way valve 4 through the control pipeline 5, the hydraulic control one-way valve 4 is in a two-way conduction mode at the moment, and if the oil pressure of the oil outlet port Pout is larger than that of the oil inlet port Pin, the hydraulic oil can be output from the oil outlet port Pout to the oil inlet port Pin to realize reverse conduction.
Referring to fig. 2, in this embodiment, the electromagnetic directional valve 2 is a three-position four-way electromagnetic valve, the electromagnetic directional valve 2 includes four communication ports, and a valve core built in the electromagnetic directional valve 2 has three working positions. The four communication ports are an oil inlet P and an oil return port T respectively, and the first working oil port A and the second working oil port B. The first working oil port A is connected to an oil inlet port Pin of the hydraulic control one-way valve 4 through a high-pressure hose 3, an oil outlet port Pout of the hydraulic control one-way valve 4 is communicated to an oil inlet and outlet of the oil cylinder, and the second working oil port B is communicated to a control port K of the hydraulic control one-way valve 4 through a control pipeline 5. When the electromagnetic directional valve 2 works normally, the oil inlet P is always in an open state. The three working positions of the valve core are respectively a middle position, a first working end and a second working end, and the working positions of the valve core are changed by controlling the electromagnetic directional valve 2, so that the electromagnetic directional valve 2 can control the oil cylinder to be in a locking state, a jacking state or a descending state.
Referring to fig. 2, when the oil cylinder is in a locked state, the valve core is in an intermediate position, and at this time, the communication ports of the electromagnetic directional valve 2 are not communicated with each other, and the pilot operated check valve 4 is in a unidirectional conduction state. Referring to fig. 3, when the oil cylinder is in a jacking state, the valve core is at a first working end, the oil inlet P is communicated with the first working oil port a, and hydraulic oil of the hydraulic oil station is sequentially output to the oil inlet port Pin of the hydraulic control one-way valve 4 through the oil inlet P, the first working oil port and the high-pressure hose 3; the second working oil port B is communicated with the oil return port T, so that hydraulic oil in the control pipeline 5 flows back to the hydraulic oil station, and the hydraulic control one-way valve 4 is in a one-way conduction state at the moment, so that the hydraulic oil of the hydraulic oil station can be driven into the oil cylinder cavity 13 at high pressure, the piston rod 11 is lifted upwards, the furnace body is lifted up, and the furnace body is lifted up and tilted. Referring to fig. 4, when the oil cylinder is in a descending state, the valve core is at the second working end, the oil inlet P is communicated with the second working oil port B, and hydraulic oil of the hydraulic oil station is sequentially output to the control interface K of the hydraulic control check valve 4 through the oil inlet P, the second working oil port B and the control pipeline 5, and at this time, the hydraulic control check valve 4 is in a bidirectional conduction state; the first working oil port A is communicated with the oil return port T, so that hydraulic oil in the oil cylinder can flow back to the hydraulic oil station through the hydraulic control one-way valve 4, the first working oil port A and the oil return port T in sequence, and the furnace body is lowered and tilted back.
If the high-pressure hose 3 breaks suddenly in the lifting or descending process of the furnace body, the electromagnetic reversing valve 2 enables the control oil cylinder to be in a locking state, and the hydraulic control one-way valve 4 is in a one-way conduction state, so that hydraulic oil in the oil cylinder cannot flow back, the hydraulic pressure in the oil cylinder cavity 13 tends to be stable, the furnace body is stopped, and the condition that the furnace body suddenly and rapidly drops is avoided to the greatest extent.
The implementation principle of the explosion-proof hydraulic system pipeline provided by the embodiment of the utility model is as follows: the return process of the hydraulic oil in the oil cylinder is limited through the hydraulic control one-way valve 4, when the high-pressure hose 3 can work normally, the electromagnetic directional valve 2 is controlled to enable the cylinder body to be in a lifting state or a descending state, and when the electromagnetic valve controls the second working oil port B to supply the hydraulic oil to the hydraulic control one-way valve 4 through the control pipeline 5, the hydraulic oil in the oil cylinder can flow back normally at the moment, so that lifting tipping or descending tilting back of the furnace body is realized; when the high-pressure hose 3 breaks, the electromagnetic directional valve 2 stops outputting hydraulic oil to the hydraulic control one-way valve 4 through the control pipeline 5, so that the hydraulic oil in the oil cylinder cannot be output from the hydraulic control one-way valve 4 to the broken high-pressure hose 3, the furnace body stops acting, and safety accidents caused by the breakage of the high-pressure hose 3 are avoided to the greatest extent.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. An explosion-proof hydraulic system pipeline, characterized in that: the hydraulic control system comprises an electromagnetic directional valve (2), a hydraulic control one-way valve (4) and a high-pressure hose (3), wherein an oil inlet P and an oil return port T of the electromagnetic directional valve (2) are communicated with a hydraulic oil station; the hydraulic control check valve (4) comprises an oil inlet port Pin, an oil outlet port Pout and a control port K, wherein the oil inlet port Pin is communicated to a first working oil port A of the electromagnetic directional valve (2) through the high-pressure hose (3), the control port K is communicated to a second working oil port B of the electromagnetic directional valve (2) through a control pipeline (5), and the oil outlet port Pout is communicated to an oil inlet and outlet of the oil cylinder.
2. An explosion-proof hydraulic system line according to claim 1, wherein: the electromagnetic reversing valve (2) controls the hydraulic control one-way valve (4) to be in a one-way conduction state, the oil inlet P is communicated with the first working oil port A, the second working oil port B is communicated with the oil return port T, and hydraulic oil in the control pipeline (5) sequentially flows through the control pipeline (5), the second working oil port B and the oil return port T to return to the hydraulic oil station.
3. An explosion-proof hydraulic system line according to claim 2, wherein: when the hydraulic control one-way valve (4) is in the one-way conduction state, the oil cylinder is in the jacking state, and hydraulic oil of the hydraulic oil station sequentially enters the oil cylinder through the oil inlet P, the first working oil port A, the high-pressure hose (3) and the hydraulic control one-way valve (4).
4. An explosion-proof hydraulic system line according to claim 3, wherein: the electromagnetic directional valve (2) controls the hydraulic control one-way valve (4) to be in a bidirectional conduction state, the oil inlet P is communicated with the second working oil port B, and the first working oil port A is communicated with the oil return port T; the hydraulic oil of the hydraulic oil station is sequentially output to the hydraulic control one-way valve (4) through the oil inlet P, the second working oil port B and the control pipeline (5).
5. An explosion-proof hydraulic system circuit according to claim 4, wherein: when the hydraulic control one-way valve (4) is in the bidirectional conduction state, the oil cylinder is in a descending state, and hydraulic oil of the oil cylinder sequentially passes through the hydraulic control one-way valve (4), the high-pressure hose (3), the first working oil port A and the oil return port T to enter the hydraulic oil station.
6. An explosion-proof hydraulic system circuit according to claim 5, wherein: the electromagnetic reversing valve (2) controls the oil cylinder to be in a locking state, and the first working oil port A, the second working oil port B, the oil inlet P and the oil return port T are not communicated with each other.
7. An explosion-proof hydraulic system line according to claim 1, wherein: the electromagnetic reversing valve (2) is a three-position four-way electromagnetic valve.
8. An explosion-proof hydraulic system line according to claim 1, wherein: when the electromagnetic directional valve (2) is opened, the oil inlet P is in a normally open state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321376093.9U CN219888386U (en) | 2023-05-31 | 2023-05-31 | Explosion-proof type hydraulic system pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321376093.9U CN219888386U (en) | 2023-05-31 | 2023-05-31 | Explosion-proof type hydraulic system pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219888386U true CN219888386U (en) | 2023-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321376093.9U Active CN219888386U (en) | 2023-05-31 | 2023-05-31 | Explosion-proof type hydraulic system pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219888386U (en) |
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2023
- 2023-05-31 CN CN202321376093.9U patent/CN219888386U/en active Active
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