CN216382021U - Pump control hydraulic system - Google Patents
Pump control hydraulic system Download PDFInfo
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- CN216382021U CN216382021U CN202123133490.7U CN202123133490U CN216382021U CN 216382021 U CN216382021 U CN 216382021U CN 202123133490 U CN202123133490 U CN 202123133490U CN 216382021 U CN216382021 U CN 216382021U
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- oil cylinder
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Abstract
The utility model provides a pump control hydraulic system which comprises a motor oil pump set, a one-way valve, a liquid filling valve and an oil cylinder, wherein the motor oil pump set is connected with a main oil way through a one-way valve pipeline, and the liquid filling valve is arranged on one side of the oil cylinder. The pipeline at the four outlets of the valve is connected with the oil tank, and oil flows back to the oil tank, at the moment, the valve filling valve is sucked by gravity, so that the function of quickly descending the oil cylinder is realized; the four solenoid valves of the cartridge valve are powered off, the liquid filling valve is closed, the oil line pipeline of the lower cavity of the oil cylinder is connected with the first pressure control valve and slowly flows to the oil tank through the first pressure control valve and the first backpressure valve, the oil cylinder enters a working feed mode, a four-pump confluence mode and a two-pump confluence mode are adopted in the working feed process, the four pumps are low in pressure and large in flow rate and realize rapid working feed in the operation of the four pumps, and the two pumps are high in pressure and small in flow rate in the operation of the two pumps, so that the low-speed working feed is realized, the power of a motor is unchanged, and the energy conservation in the true sense is realized.
Description
Technical Field
The utility model belongs to the technical field of hydraulic systems, and particularly relates to a pump control hydraulic system.
Background
Recently, energy conservation and emission reduction are widely developed in various industries, and the hydraulic system has the following characteristics:
1. the large flow is easy to obtain, and the running speed of the hydraulic system is improved;
2. the power of the whole system is low, and the rotating speed of the motor is adjusted by feeding back different working pressures, so that the real energy conservation is realized;
3. the structure is convenient to install, the volume of the oil tank is small, the hydraulic oil consumption is reduced, and sheet metal materials are saved.
However, the existing pump control hydraulic system also has the problems of low return efficiency, unstable descending speed and energy consumption.
Therefore, it is necessary to develop a pump-controlled hydraulic system.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a pump control hydraulic system, which is realized by the following technical scheme:
a pump control hydraulic system comprises a motor oil pump set, a one-way valve, a liquid filling valve and an oil cylinder, wherein the motor oil pump set is connected with a main oil way through a one-way valve pipeline, and the liquid filling valve is further arranged on one side of the oil cylinder.
Preferably, a first cartridge valve is further arranged on the main oil path connected with the one-way valve pipeline, and system pressure is established through the first cartridge valve.
Preferably, the inlet of the upper cavity of the oil cylinder is in threaded connection with a cartridge valve II, the outlet of the lower cavity of the oil cylinder is in pipeline connection with a cartridge valve V, and the outlet of the lower cavity of the oil cylinder is in pipeline connection with a cartridge valve IV through a cartridge valve V pipeline.
Preferably, the four solenoid valves of the cartridge valve are powered off, the liquid filling valve is closed, the oil line of the lower cavity of the oil cylinder is connected with the first pressure control valve and slowly flows to the oil tank through the first pressure control valve and the second backpressure valve, and the oil cylinder enters a working mode.
Preferably, the pipeline of the first cartridge valve is connected with a third cartridge valve, an electromagnetic valve of the third cartridge valve is electrified, a main oil path flows into the lower cavity of the oil cylinder through a fifth cartridge valve, the electromagnetically-controlled liquid filling valve is opened at the moment, and oil on the upper cavity of the oil cylinder returns to the oil tank.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, pipelines at four outlets of the cartridge valve are connected with an oil tank, oil flows back to the oil tank, and the valve filling valve is sucked by gravity, so that the function of quickly descending the oil cylinder is realized.
2. In the utility model, the three solenoid valves of the cartridge valve are electrified, the main oil way flows into the lower cavity of the oil cylinder through the five solenoid valves of the cartridge valve, the solenoid-operated liquid filling valve is opened at the moment, and the oil in the upper cavity of the oil cylinder returns to the oil tank, thereby realizing the function of quick return.
3. In the utility model, the four solenoid valves of the cartridge valve are powered off, the liquid filling valve is closed, the oil way pipeline of the lower cavity of the oil cylinder is connected with the first pressure control valve and slowly flows to the oil tank through the first pressure control valve and the first backpressure valve, the oil cylinder enters a working feed mode, in the working feed process, a four-pump confluence mode and a two-pump confluence mode exist, in the four-pump operation, the pressure is low, the flow is large, the quick working feed is realized, in the two-pump operation, the pressure is high, the flow is small, the low-speed working feed is realized, and the power of the motor is unchanged, thereby realizing the energy saving in the true sense.
4. In the utility model, the first reversing valve and the second reversing valve both adopt electromagnetic reversing valves, so that the reversing efficiency is improved and the operation is convenient.
5. In the utility model, the motor oil pump sets adopt servo motor oil pump sets, and are arranged in two groups, and the inlet end pipeline is connected with the oil supply tank, thereby ensuring the oil supply efficiency.
6. In the utility model, a first control valve and a second control valve are connected in series between the one-way valve and the first cartridge valve through pipelines, so that the stability of control operation is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the internal structure of the present invention.
In the figure:
1. an electric motor oil pump set; 2. a one-way valve; 3. a first control valve; 4. a second control valve; 5. a first cartridge valve; 6. a cartridge valve II; 7. a first reversing valve; 8. a second reversing valve; 9. a liquid charging valve; 10. an oil cylinder; 11. a third cartridge valve; 12. a cartridge valve IV; 13. a fifth cartridge valve; 14. a first pressure control valve; 15. and a second pressure control valve.
Detailed Description
The utility model is described in detail below with reference to the accompanying drawings, and as shown in fig. 1 and fig. 2, a pump control hydraulic system includes a motor oil pump unit 1, a check valve 2, a liquid filling valve 9 and an oil cylinder 10, wherein the motor oil pump unit 1 is connected to a main oil circuit through a pipeline of the check valve 2, and the liquid filling valve 9 is further disposed on one side of the oil cylinder 10.
Specifically, in the present embodiment, a cartridge valve i 5 is further disposed on the main oil line connected to the one-way valve 2 through a pipeline, and the system pressure is established through the cartridge valve i 5.
Specifically, in this embodiment, the inlet of the upper chamber of the oil cylinder 10 is connected to a second cartridge valve 6 through a screw, wherein the outlet of the lower chamber of the oil cylinder 10 is connected to a fifth cartridge valve 13 through a pipeline, and is connected to a fourth cartridge valve 12 through a fifth cartridge valve 13 through a pipeline.
Specifically, in this embodiment, the pipeline at the outlet of the fourth cartridge valve 12 is connected to the oil tank, and the oil flows back to the oil tank, at this time, the valve 9 is opened by gravity, so as to realize the function of rapidly lowering the oil cylinder 10.
Specifically, in this embodiment, the four 12 solenoid valves of the cartridge valve are powered off, the liquid filling valve 9 is closed, the oil line of the lower cavity of the oil cylinder 10 is connected with the first pressure control valve 14 and slowly flows to the oil tank through the first pressure control valve 14 and the backpressure valve, the oil cylinder 10 enters a working feed mode, in the working feed process, a four-pump confluence mode and a two-pump confluence mode are provided, in the four-pump operation, the pressure is low, the flow is large, the quick working feed is realized, in the two-pump operation, the pressure is high, the flow is small, the low-speed working feed is realized, and the power of the motor is unchanged, so that the energy saving in the true sense is realized.
Specifically, in this embodiment, the third cartridge valve 11 and the electromagnetic valve are energized, the main oil path flows into the lower cavity of the oil cylinder 10 through the fifth cartridge valve 13, the electromagnetically controlled prefill valve 9 is opened at this time, and oil on the upper cavity of the oil cylinder 10 returns to the oil tank, so as to realize the quick return function.
Specifically, in the embodiment, a first reversing valve 7 is further connected between the first cartridge valve 5 and the second cartridge valve 6 through a pipeline.
Specifically, in the embodiment, a second reversing valve 8 is further connected between the second cartridge valve 6 and the oil tank through a pipeline.
Specifically, in the present embodiment, a second pressure control valve 15 is further connected between the fifth cartridge valve 13 and the oil tank through a pipeline.
Specifically, in the present embodiment, a first control valve 3 and a second control valve 4 are further connected in series between the check valve 2 and the cartridge valve 5 through a pipeline.
Specifically, in this embodiment, the motor oil pump unit 1 adopts a servo motor oil pump unit, and is provided with two sets, and the inlet end pipeline is connected with an oil supply tank.
Specifically, in the present embodiment, the check valve 2 is an electromagnetic check valve.
Specifically, in this embodiment, the liquid filling valve 9 is an electromagnetic liquid filling valve.
Specifically, in this embodiment, the first reversing valve 7 and the second reversing valve 8 both adopt electromagnetic reversing valves.
Specifically, in the present embodiment, the first cartridge valve 5, the second cartridge valve 6, the third cartridge valve 11, the fourth cartridge valve 12 and the fifth cartridge valve 13 are all two-way cartridge valves.
Principle of operation
In the utility model, a motor oil pump set 1 provides continuous power, the power is converged to a main oil path through a one-way valve 2, system pressure is established through a cartridge valve I5, the system pressure enters an upper cavity of an oil cylinder 10 through a cartridge valve II 6, a lower cavity oil path flows to a cartridge valve IV 12 through a cartridge valve V13, oil quickly returns to an oil tank, a charge valve 9 is sucked open by gravity, the oil cylinder 10 quickly descends, a solenoid valve of the cartridge valve IV 12 is powered off, a charge valve 9 is closed, the lower cavity oil path slowly flows to the oil tank through a pressure control valve I14 back pressure valve, the oil cylinder 10 enters a working inlet mode, a four-pump confluence mode and a two-pump confluence mode are adopted in the working inlet process, the pressure is low, the flow is large, the quick working inlet is realized, the pressure is high, the flow is small, the low-speed working inlet is realized, the motor power is unchanged, so that the energy conservation in the true sense is realized, a cartridge valve III 11 solenoid valve is electrified, and a main oil path flows into a lower cavity of the oil cylinder 10 through a cartridge valve V13, at the moment, the liquid filling valve 9 controlled by the electromagnetic valve is opened, and the upper cavity oil quickly returns to the oil tank, so that the quick return function is realized.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.
Claims (5)
1. The pump control hydraulic system is characterized by comprising a motor oil pump set (1), a one-way valve (2), a liquid filling valve (9) and an oil cylinder (10), wherein the motor oil pump set (1) is connected with a main oil way through the one-way valve (2) through a pipeline, and the liquid filling valve (9) is further arranged on one side of the oil cylinder (10).
2. The pump-controlled hydraulic system according to claim 1, characterized in that a first cartridge valve (5) is arranged in the main oil line to which the non-return valve (2) is connected, and the system pressure is built up by means of the first cartridge valve (5).
3. The pump-controlled hydraulic system according to claim 1, characterized in that the inlet of the upper chamber of the cylinder (10) is threadedly connected with a second cartridge valve (6), wherein the outlet of the lower chamber of the cylinder (10) is connected with a fifth cartridge valve (13) through a pipeline, and is connected with a fourth cartridge valve (12) through the fifth cartridge valve (13) through a pipeline.
4. The pump-controlled hydraulic system according to claim 3, characterized in that the four (12) solenoid valves of the cartridge valve are de-energized, the charging valve (9) is closed, the oil line of the lower cavity of the cylinder (10) is connected with the first (14) pressure control valve, and slowly flows to the oil tank through the first (14) pressure control valve and the back pressure valve, and the cylinder (10) enters a working mode.
5. The pump-controlled hydraulic system according to claim 2, characterized in that the first cartridge valve (5) is connected to the third cartridge valve (11) in a pipeline manner, the solenoid valve of the third cartridge valve (11) is energized, the main oil path flows into the lower cavity of the oil cylinder (10) through the fifth cartridge valve (13), the electromagnetically-controlled prefill valve (9) is opened, and the oil in the upper cavity of the oil cylinder (10) returns to the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123133490.7U CN216382021U (en) | 2021-12-14 | 2021-12-14 | Pump control hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123133490.7U CN216382021U (en) | 2021-12-14 | 2021-12-14 | Pump control hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216382021U true CN216382021U (en) | 2022-04-26 |
Family
ID=81223515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123133490.7U Active CN216382021U (en) | 2021-12-14 | 2021-12-14 | Pump control hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216382021U (en) |
-
2021
- 2021-12-14 CN CN202123133490.7U patent/CN216382021U/en active Active
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