CN202301240U - Hydraulic control system for dynamic axial compression column - Google Patents
Hydraulic control system for dynamic axial compression column Download PDFInfo
- Publication number
- CN202301240U CN202301240U CN2011204096861U CN201120409686U CN202301240U CN 202301240 U CN202301240 U CN 202301240U CN 2011204096861 U CN2011204096861 U CN 2011204096861U CN 201120409686 U CN201120409686 U CN 201120409686U CN 202301240 U CN202301240 U CN 202301240U
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- oil cylinder
- liquid pump
- control system
- hydraulic control
- ball valve
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Abstract
The utility model discloses a hydraulic control system for a dynamic axial compression column and belongs to a hydraulic control system. The hydraulic control system comprises an oil cylinder, a four-way ball valve, a pneumatic liquid pump, a pressure meter and an air filter, wherein four ways of the four-way ball valve are connected with an upper cavity and a lower cavity of the oil cylinder, the pneumatic liquid pump and an oil tank respectively through pipelines; the other end of the pneumatic liquid pump is connected with the oil tank; the pressure meter is arranged on the pipeline between the pneumatic liquid pump and the four-way ball valve; the air filter is connected with the oil tank; a flow regulating valve is arranged on the pipeline between the four-way ball valve and the upper cavity of the oil cylinder; and a filter is arranged at the front end of an oil absorption port of the pneumatic liquid pump. Compared with the prior art, the hydraulic control system for the dynamic axial compression column has the characteristics that the moving speed of the oil cylinder can be controlled accurately so that the oil cylinder moves more steadily, and the service life of the piston is prolonged; furthermore, the pollution problem of hydraulic oil is solved; equipment loss is avoided; and influence on the production is prevented; therefore, the hydraulic control system has high popularization and application value.
Description
Technical field
The utility model relates to a kind of hydraulic control system, especially a kind of dynamic axial compression column hydraulic control system.
Background technique
Dynamic axial compression column is the important component part of high performance liquid chromatograph, but in concrete the application, has some problems.Because power plant are gas drive liquid pumps of compressed air-driven, through regulating air pressure reducing device, when making the pressure of reduction valve be increased to the breakout pressure of pump, pump is started working.And compressed-air actuated compressibility can cause the work of gas drive liquid pump not steady; The output of pump has certain pulsation; Make oil cylinder moment have very big driving force and displacement, oil cylinder piston may be scratched in the moment that gets into pillar, the movement velocity too fast working life that also can reduce piston.Just in case there is the misoperation can not better controlled.Only can't accurately control the travelling speed of oil cylinder from the air pressure reducing device through the way of regulating atmospheric pressure.In addition, because long-time the application, hydraulic oil receives pollution to a certain degree unavoidably, and a small particle just possibly damage pump in the fluid, not only has the loss on the equipment also can influence production.At present, good solution is not also arranged.
The model utility content
The technical assignment of the utility model is to above-mentioned deficiency of the prior art a kind of dynamic axial compression column hydraulic control system to be provided; This dynamic axial compression column hydraulic control system has the purpose that can accurately control the oil cylinder travelling speed; Make moving of oil cylinder more steady, increased the working life of piston; Solve the pollution problem of hydraulic oil, avoided the loss of equipment, can not influence the characteristics of production.
The utility model solves the technological scheme that its technical problem adopted: it comprises oil cylinder, four way ball valve, gas drive liquid pump, pressure gauge and air-strainer; The four-way of described four way ball valve links to each other with fuel tank with epicoele, the cavity of resorption of oil cylinder, the gas drive liquid pump of oil cylinder through pipeline respectively; The other end of described gas drive liquid pump connects fuel tank; Pipeline between described gas drive liquid pump and the four way ball valve is provided with pressure gauge; Described air-strainer links to each other with fuel tank, and the pipeline between described four way ball valve and the oil cylinder epicoele is provided with flow control valve, and described gas drive liquid pump inlet port front end is provided with filter.
Be provided with safety valve between described oil cylinder epicoele and the fuel tank.
The dynamic axial compression column hydraulic control system of the utility model is compared with existing technology; Have following outstanding beneficial effect: the pipeline between four way ball valve and the oil cylinder epicoele is provided with flow control valve; Accurate control flow rate; Thereby reach the purpose of control flow rate control oil cylinder travelling speed, make moving of oil cylinder more steady, increased the working life of piston; Be provided with filter at gas drive liquid pump inlet port front end, solved the pollution problem of hydraulic oil, avoided the loss of equipment, can not influence production, economic and reliable, characteristics such as easy to use.
Description of drawings
Description of reference numerals: 1, air-strainer, 2, filter, 3, the gas drive liquid pump, 4, pressure gauge, 5, four way ball valve, 6, flow control valve, 7, oil cylinder, 8, safety valve, 9, fuel tank.
Embodiment
With reference to explanation at length below the dynamic axial compression column hydraulic control system work of 1 pair of the utility model of Figure of description.
The dynamic axial compression column hydraulic control system of the utility model; Its structure comprises oil cylinder 7, four way ball valve 5, gas drive liquid pump 3, pressure gauge 4 and air-strainer 1, and the four-way of described four way ball valve 5 links to each other with the epicoele of oil cylinder 7, cavity of resorption, gas drive liquid pump 6 and the fuel tank 9 of oil cylinder 7 through pipeline respectively, and the other end of described gas drive liquid pump 3 connects fuel tank 9; Pipeline between described gas drive liquid pump 3 and the four way ball valve 5 is provided with pressure gauge 4; Described air-strainer 1 links to each other with fuel tank 9, and the pipeline between described four way ball valve 5 and oil cylinder 7 epicoeles is provided with flow control valve 6, and described gas drive liquid pump 3 inlet port front ends are provided with filter 2; Described filter 2 is installed for pipe type; Installation, dismounting, easy to maintenance, economic and practical, unfailing performance is good.
Be provided with safety valve 8 between described oil cylinder 7 epicoeles and the fuel tank 9.The effect of safety valve 8 is to prevent the system pressure overload, and its pressure can be set according to need of work.
Gas drive liquid pump 3 is used for to system with high pressure oil, and its pressure is through gas pressure reducer control.
1, oil cylinder pressurization
Rotate four way ball valve 5 handles, make it be in 1 and 4 and communicate, 2 and 3 states that communicate, oil circuit is:
In-line: fuel tank 9 → filter 2 → gas drive liquid pump 3 → four way ball valve 5 → flow control valve 6 → oil cylinder 7 epicoeles;
Oil circuit: oil cylinder 7 cavity of resorptions → four way ball valve 5 → fuel tank 9.
When hydraulic oil gets into flow control valve 6, can control the speed of oil cylinder 7 accurately through the flow of regulating flow control valve 6 openings, oil cylinder 7 is operated steadily, reliably.The effect of safety valve 8 is to prevent the system pressure overload, and its pressure can be set according to need of work.
2, oil cylinder release
After sample preparation is accomplished, need be to system's release, rotate four way ball valve 5 handles this moment, and make it be in 1 and 3 and communicate, 2 and 4 states that communicate, oil circuit is:
In-line: fuel tank 9 → filter 2 → gas drive liquid pump 3 → four way ball valve 5 → oil cylinder 7 cavity of resorptions;
Oil circuit: oil cylinder 7 epicoeles → flow control valve 6 → four way ball valve 5 → fuel tank 9.
Because oil circuit has flow control valve 6, can play certain back pressure effect, makes the operation of oil cylinder 7 more steady.
Except that the described technical characteristics of specification, be the known technology of those skilled in the art.
Claims (2)
1. dynamic axial compression column hydraulic control system; Comprise oil cylinder, four way ball valve, gas drive liquid pump, pressure gauge and air-strainer; The four-way of described four way ball valve links to each other with fuel tank with epicoele, the cavity of resorption of oil cylinder, the gas drive liquid pump of oil cylinder through pipeline respectively; The other end of described gas drive liquid pump connects fuel tank, and the pipeline between described gas drive liquid pump and the four way ball valve is provided with pressure gauge, and described air-strainer links to each other with fuel tank; It is characterized in that: the pipeline between described four way ball valve and the oil cylinder epicoele is provided with flow control valve, and described gas drive liquid pump inlet port front end is provided with filter.
2. dynamic axial compression column hydraulic control system according to claim 1 is characterized in that: be provided with safety valve between described oil cylinder epicoele and the fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204096861U CN202301240U (en) | 2011-10-25 | 2011-10-25 | Hydraulic control system for dynamic axial compression column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204096861U CN202301240U (en) | 2011-10-25 | 2011-10-25 | Hydraulic control system for dynamic axial compression column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301240U true CN202301240U (en) | 2012-07-04 |
Family
ID=46370149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204096861U Expired - Fee Related CN202301240U (en) | 2011-10-25 | 2011-10-25 | Hydraulic control system for dynamic axial compression column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202301240U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628212A (en) * | 2012-08-30 | 2014-03-12 | 绍兴文理学院 | Hydraulic transmission system of high-speed electronic sectional warping machine |
-
2011
- 2011-10-25 CN CN2011204096861U patent/CN202301240U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628212A (en) * | 2012-08-30 | 2014-03-12 | 绍兴文理学院 | Hydraulic transmission system of high-speed electronic sectional warping machine |
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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: 20120704 Termination date: 20181025 |