CN204827829U - High pressure plunger pump's hydraulic control system - Google Patents
High pressure plunger pump's hydraulic control system Download PDFInfo
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- CN204827829U CN204827829U CN201520576393.0U CN201520576393U CN204827829U CN 204827829 U CN204827829 U CN 204827829U CN 201520576393 U CN201520576393 U CN 201520576393U CN 204827829 U CN204827829 U CN 204827829U
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- valve
- tilt cylinder
- control circuit
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- pressure
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Abstract
The utility model provides a high pressure plunger pump's hydraulic control system, includes float quantitative change volume pump, tilt cylinder control circuit and master cylinder control circuit are inputed respectively through the connecting line to the pressure oil of float quantitative change volume pump output, in tilt cylinder control circuit, accumulator and the first switching -over valve continuous with the tilt cylinder are inputed respectively to pressure oil behind relief pressure valve and check valve, and in master cylinder control circuit, pressure oil is equipped with the sequence valve through two master cylinders that the connecting line was inputed and second switching -over valve links to each other between tilt cylinder control circuit and the second switching -over valve. The utility model discloses can realize the fast turnaround (FTA), can not produce the backward flow, improve transport efficiency, and through sequence valve control master cylinder sequentially -operating after the tilt cylinder switching -over, also reduce the switching -over backward flow, improve work efficiency, because the power supply discharge capacity is less, can realize entire system's high -pressure long range transport, reduced vibrations and crawled, can effectively reduce the maintenance period, also can reduce maintainer's intensity of labour.
Description
Technical field
The utility model relates to a kind of hydraulic control system, and specifically a kind of hydraulic control system of high-pressure plunger pump, belongs to technical field of hydraulic.
Background technique
Plunger pump is device more common in hydraulic system, known plunger pump structure is made up of two master cylinder, extra quality cylinder, the S pendulum valve controlled by tilt cylinder and hydraulic station, piston rod and the extra quality cylinder piston of two master cylinder are connected, alternately fore and aft motion is made in material cylinder, put valve commutation by tilt cylinder control S to dock with discharging cylinder simultaneously, realize the process of binder and suction.
Carry some solid contents few with plunger pump, during moisture larger material, efficiency is higher.And when plunger pump is when carrying the toughness material of small flow, on the one hand, because the solid content of toughness material is higher, conveying is comparatively slow, and when the tilt cylinder speed that control S puts valve swing is constant, logistics material commutation backflow is large, quantity delivered does not reach requirement, and transfer efficiency is low; On the other hand, because transporting resistance is comparatively large, directly cause system pressure to raise, oil cylinder there will be creeping phenomenon, and system cloud gray model is unstable, reduces the working life of system.
Summary of the invention
For above-mentioned prior art Problems existing, the purpose of this utility model be to provide a kind of can efficiently carry toughness material, reduce backflow and oil cylinder is creeped, can meet the hydraulic control system of the high-pressure plunger pump of the working condition requirements such as high-pressure delivery.
For achieving the above object, the technical solution adopted in the utility model is: a kind of hydraulic control system of high-pressure plunger pump, comprise small displacement variable displacement pump, the pressure oil that small displacement variable displacement pump exports inputs tilt cylinder control circuit and master cylinder control loop respectively by connecting pipeline; In tilt cylinder control circuit, the first selector valve that pressure oil inputs accumulator respectively through reduction valve and is connected with tilt cylinder after one-way valve, in master cylinder control loop, two master cylinders that pressure oil is connected with the second selector valve through connecting pipeline input, are provided with sequence valve between tilt cylinder control circuit and the second selector valve.
During work, hydraulic oil, after the supercharging of small displacement variable displacement pump, inputs tilt cylinder control circuit and master cylinder control loop respectively; In tilt cylinder control circuit, pressure oil road input accumulator after reduction valve and one-way valve is accumulator energy storage, and the first selector valve of separately leading up to controls tilt cylinder, and accumulator provides pressure source for the first selector valve, make the first selector valve quick acting, realize the quick commutation of tilt cylinder and S pendulum valve.When tilt cylinder action, because tilt cylinder circuit pressure is low, sequence valve is in closed condition, it can not be made to commutate to fuel feeding in the second selector valve, therefore two master cylinder akinesia, when tilt cylinder motion puts in place, after tilt cylinder circuit pressure is increased to the pressure set in sequence valve, hydraulic oil just makes the second selector valve commutation by sequence valve, the piston rod of two master cylinder realizes alternately expanding-contracting action, the piston in cylinder retreats to drive one to expect, is sucked by the material in hopper, and the piston-advance force feed material simultaneously promoted in another material cylinder is put valve through S and exported.After the piston rod arrival stroke of two master cylinder, the proximity switch be arranged on two master cylinder detects signal, signal is sent to the first selector valve, first selector valve commutation, drive tilt cylinder and S to put valve to commutate fast, when tilt cylinder motion puts in place, hydraulic oil makes the second selector valve commutation by sequence valve, the piston rod commutation motion of two master cylinder, thus realize the reciprocal uninterrupted pumping of Matter Transfer.
Further, also comprise electromagnetic relief valve, the pressure oil that small displacement variable displacement pump exports is through electromagnetic relief valve by connecting pipeline input tilt cylinder control circuit and master cylinder control loop, and electromagnetic relief valve has pressure regulating action, can reduce the vibration of plunger pump.
Preferably, the first selector valve and the second selector valve are electro-hydraulic reversing valve, and electro-hydraulic reversing valve commutation fast response time, is quick on the draw, and good seal performance, and commutation reliability is high.
The utility model is owing to being provided with accumulator in tilt cylinder loop, quick commutation can be realized, material in pipeline occurs that the time of decompression is very short, due to the motional inertia of material, material can not move along the direction that throughput direction is contrary, namely can not produce backflow, improve transfer efficiency, and control master cylinder sequentially-operating by sequence valve after tilt cylinder commutation, also reduce commutation backflow, improve working efficiency; On the other hand, because power source discharge capacity is less, so just higher pressure can be obtained at motor when power is certain, thus the high pressure long-distance sand transport of whole system can be realized, the phenomenon reducing vibrations and creep; In addition, owing to adopting small displacement pressure source, make two master cylinder action slower, slow feeding reduces pumping system flow, and the negative pressure sucking material formation also has sufficient time suction, thus improves material absorptivity, when pusher due to the continuity of material, the phenomenon decreasing vibrations and creep, effectively can reduce maintenance period, also can reduce the labor intensity of attendant.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
In figure, 1. filter, 2. small displacement variable displacement pump, 3. electromagnetic relief valve, 4. reduction valve, 5. one-way valve, 6. accumulator, 7. the first selector valve, 8. sequence valve, 9. the second selector valve, 10. tilt cylinder, 11. pairs of master cylinders.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of hydraulic control system of high-pressure plunger pump, comprises small displacement variable displacement pump 2, and the pressure oil that small displacement variable displacement pump 2 exports inputs tilt cylinder control circuit and master cylinder control loop respectively by connecting pipeline; In tilt cylinder control circuit, the first selector valve 7 that pressure oil inputs accumulator 6 respectively through reduction valve 4 and is connected with tilt cylinder 10 after one-way valve 5, in master cylinder control loop, two master cylinders 11 that pressure oil is connected with the second selector valve 9 through connecting pipeline input, are provided with sequence valve 8 between tilt cylinder control circuit and the second selector valve 9.
During work, hydraulic oil first filters through filter 1, after small displacement variable displacement pump 2 supercharging, inputs tilt cylinder control circuit and master cylinder control loop respectively; In tilt cylinder control circuit, pressure oil road input accumulator 6 after reduction valve 4 and one-way valve 5 is accumulator energy storage, first selector valve 7 of separately leading up to controls tilt cylinder 10, accumulator 6 provides pressure source for the first selector valve 7, make the first selector valve 7 quick acting, realize the quick commutation of tilt cylinder 10 and S pendulum valve.When tilt cylinder 10 action, because tilt cylinder circuit pressure is low, sequence valve 8 is in closed condition, it can not be made to commutate to fuel feeding in the second selector valve 9, therefore two master cylinder 11 akinesia, decrease backflow, when tilt cylinder 10 motion puts in place, after tilt cylinder circuit pressure is increased to the pressure of setting in sequence valve 8, hydraulic oil just makes the second selector valve 9 commutate by sequence valve 8, the piston rod of two master cylinder 11 realizes alternately expanding-contracting action, the piston in cylinder retreats to drive one to expect, material in hopper is sucked, the piston-advance force feed material simultaneously promoted in another material cylinder is put valve through S and is exported.After the piston rod arrival stroke of two master cylinder 11, the proximity switch be arranged on two master cylinder 11 detects signal, signal is sent to the first selector valve 7, first selector valve 7 commutates, and drives tilt cylinder 10 and S to put valve and commutates fast, when tilt cylinder 10 motion puts in place, after tilt cylinder circuit pressure is increased to the pressure of setting in sequence valve 8, hydraulic oil makes the second selector valve 9 commutate by sequence valve 8, the piston rod commutation motion of two master cylinder 11, thus realizes the reciprocal uninterrupted pumping of Matter Transfer.
Further, also comprise electromagnetic relief valve 3, the pressure oil that small displacement variable displacement pump 2 exports inputs tilt cylinder control circuit and master cylinder control loop through electromagnetic relief valve 3 by connecting pipeline.Electromagnetic relief valve 3 has pressure regulating action, can reduce the vibration of plunger pump.
Preferably, the first selector valve 7 and the second selector valve 9 are electro-hydraulic reversing valve, and electro-hydraulic reversing valve commutation fast response time, is quick on the draw, and good seal performance, and commutation reliability is high.
Claims (3)
1. a hydraulic control system for high-pressure plunger pump, is characterized in that, comprises small displacement variable displacement pump (2), and the pressure oil that described small displacement variable displacement pump (2) exports inputs tilt cylinder control circuit and master cylinder control loop respectively by connecting pipeline; In tilt cylinder control circuit, the first selector valve (7) that pressure oil inputs accumulator (6) respectively through reduction valve (4) and is connected with tilt cylinder (10) after one-way valve (5), in master cylinder control loop, two master cylinders (11) that pressure oil is connected with the second selector valve (9) through connecting pipeline input, are provided with sequence valve (8) between described tilt cylinder control circuit and the second selector valve (9).
2. the hydraulic control system of high-pressure plunger pump according to claim 1, it is characterized in that, also comprise electromagnetic relief valve (3), the pressure oil that described small displacement variable displacement pump (2) exports inputs tilt cylinder control circuit and master cylinder control loop through electromagnetic relief valve (3) by connecting pipeline.
3. the hydraulic control system of high-pressure plunger pump according to claim 1, is characterized in that, described first selector valve (7) and the second selector valve (9) are electro-hydraulic reversing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520576393.0U CN204827829U (en) | 2015-08-03 | 2015-08-03 | High pressure plunger pump's hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520576393.0U CN204827829U (en) | 2015-08-03 | 2015-08-03 | High pressure plunger pump's hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827829U true CN204827829U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520576393.0U Expired - Fee Related CN204827829U (en) | 2015-08-03 | 2015-08-03 | High pressure plunger pump's hydraulic control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204827829U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268229A (en) * | 2018-10-10 | 2019-01-25 | 济阳新华能源实业有限责任公司 | A kind of coal slurrypump oil guard device and control method |
| CN110966266A (en) * | 2019-12-30 | 2020-04-07 | 青岛九合重工机械有限公司 | Novel single-pump hydraulic control pumping system |
| CN111425762A (en) * | 2020-03-30 | 2020-07-17 | 南昌航空大学 | Mechanical dewatered sludge oil film resistance-reducing pipeline conveying device and using method thereof |
-
2015
- 2015-08-03 CN CN201520576393.0U patent/CN204827829U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268229A (en) * | 2018-10-10 | 2019-01-25 | 济阳新华能源实业有限责任公司 | A kind of coal slurrypump oil guard device and control method |
| CN109268229B (en) * | 2018-10-10 | 2024-05-03 | 山东新阳能源有限公司 | Coal slime oil pumping protection device and control method |
| CN110966266A (en) * | 2019-12-30 | 2020-04-07 | 青岛九合重工机械有限公司 | Novel single-pump hydraulic control pumping system |
| CN111425762A (en) * | 2020-03-30 | 2020-07-17 | 南昌航空大学 | Mechanical dewatered sludge oil film resistance-reducing pipeline conveying device and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20160803 |