CN2219407Y - Multifunctional valve - Google Patents
Multifunctional valve Download PDFInfo
- Publication number
- CN2219407Y CN2219407Y CN 94238920 CN94238920U CN2219407Y CN 2219407 Y CN2219407 Y CN 2219407Y CN 94238920 CN94238920 CN 94238920 CN 94238920 U CN94238920 U CN 94238920U CN 2219407 Y CN2219407 Y CN 2219407Y
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- pressure
- pipe
- oil inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a multifunctional valve of pressure and tensile used for modulating the test machine of pressure and tensile. The utility model is composed of a control valve and overflow valve and assembled in a valve body through the connection of a damping tube and an oil pipe. An oil pump is connected with an oil inlet and an oil return hole of an overflow valve. An oil tank is connected with an oil inlet pipe of the tank of a control valve which controls the oil pressure of the oil pipe. The flow of the oil inlet is regulated by the damping tube. The oil pressure of the oil tank is kept on a certain value to achieve automatic control, reduce labour intensity and enhance work efficiency.
Description
The utility model is the control valve in the oil pressure control system of a kind of pressure, tensile testing machine in the building materials test field.
The adjusting control of the pressure of existing pressure, tensile testing machine, pulling force is to realize at the jack of machine bottom with device.Significantly there is disadvantage in this controlling device: inconvenient operation, and labor intensity is big; Can only intermittently regulate, pressure, pulling force adjusting have error; Press weight range to be subjected to certain restriction.Therefore this device is restricted the use of pressure, tensile testing machine.
The delivery pressure of manufacturing experimently a kind of multifunction valve control oil pump is regulated the liter of the oil pressure in the oil cylinder or is fallen, and makes pressures, tensile testing machine obtain pressure or pulling force, overcomes the shortcoming of jack controlling device in existing pressure, the tensile testing machine, is the purpose of this utility model.
The utility model multifunction valve has control valve and relief valve to be assembled in the valve body by damp tube and oil pipe connection, and damp tube and oil pipe are communicated with the valve pocket of control valve and relief valve.Control valve includes spool, valve pocket, fuel tank oil inlet pipe, adjusting screw rod and oil spill pipe; Relief valve includes spool, valve pocket, oil inlet hole, spill port, push rod and pressure spring.Relief valve is provided with oil inlet hole and return port is communicated with oil pump.Control valve is provided with the fuel tank oil inlet pipe and is communicated with fuel tank.Oil pump is squeezed into relief valve with oil by oil inlet hole, flow to control valve through oil pipe and set up the initial pressure state, when the oil pressure of fuel tank is elevated to the pilot pressure definite value thereupon gradually, the position that the spool of the feedback control overflow valve pocket by damp tube moves, reach the pressure balance of oil pump and fuel tank, realize regulating automatically control pressure, the pressure of tensile testing machine, value of thrust.
The utility model is compared with pressure, tension on existing pressure, the tensile testing machine, and its advantage is automatic control, realizes that stepless voltage regulation, modulation are pressed, the magnitude of pulling force is correct, eliminates regulating error; Easy to operate, reduce labor intensity, raise the efficiency.
According to accompanying drawing, this practical embodiment is carried out detailed technical description now.
Fig. 1 is a topology view of the present utility model.
Control valve, relief valve and oil pipe 11 and damp tube 4 devices are in valve body.End in valve pocket 9 inner chambers of relief valve has and can axially movable push rod 5 contacts with push rod 5 and can axially movable spool 7, and pressure spring 6 is arranged on the push rod, has oil inlet hole 10 and spill port 8 to lead to oil pump on valve pocket 9.When initial, the spill port 8 that pressure spring 6 compressing push rods 5 and spool 7 stop up on the valve pocket 9 is in valve pocket 9 chambeies of the oil that oil pump is squeezed into by oil inlet hole 10 streams and relief valve, directly in oil pipe 11 inflow control valve valve pockets 3, flow into fuel tank by oil pipe oil inlet pipe 12, set up initial pressure.Adjusting screw rod 13 and the clearance distance of spool 2 in valve pocket 3, control fuel tank oil pressure is raised to the force value of pressure, tensile testing machine working state.Because pump works on, oil pressure in the fuel tank can continue to rise above the working pressure value, at this moment, oil in the valve pocket 3 of control valve feeds back in the relief valve valve pocket 9 by damping pipe 4, and oil pressure and compression bullet are built 6 pressure, and push rod 5 is moved right, part is stopped up oil inlet hole 10 and is reduced the oil that flows in the fuel tank, make the oil pressure in the fuel tank fall back to the working pressure value, the balance that keep-ups pressure, the force value the when oil pressure in the fuel tank remains in working order.At the two ends of valve pocket 3 two oil spill pipes 1 are arranged, when making the work of control valve and relief valve, a small amount of oil that overflows at valve pocket 3 and 9 is back in the fuel tank, the cleaning of maintaining valve and reduction oil consumption.
Claims (1)
1, a kind of multifunction valve, it comprises control valve and relief valve, control valve has spool (1), valve pocket (3), fuel tank oil inlet pipe (12), adjusting screw rod (13), oil spill pipe (1) to form, relief valve has spool (7), valve pocket (9), push rod (5), pressure spring (6) and oil inlet hole (10) and spill port (8) to form, it is characterized in that damp tube (4), oil pipe (11) UNICOM's control valve valve pocket (3) and relief valve valve pocket (9), control valve is provided with fuel tank oil inlet pipe (12), relief valve is provided with oil inlet hole (10) and return port (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94238920 CN2219407Y (en) | 1994-06-16 | 1994-06-16 | Multifunctional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94238920 CN2219407Y (en) | 1994-06-16 | 1994-06-16 | Multifunctional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2219407Y true CN2219407Y (en) | 1996-02-07 |
Family
ID=33846229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94238920 Expired - Fee Related CN2219407Y (en) | 1994-06-16 | 1994-06-16 | Multifunctional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2219407Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557349A (en) * | 2013-11-15 | 2014-02-05 | 成都力锋清洗机股份有限公司 | Multifunctional pressure test valve bank |
| CN109882467A (en) * | 2019-04-11 | 2019-06-14 | 陈艳艳 | A kind of hydraulic cylinder safety valve and its application |
-
1994
- 1994-06-16 CN CN 94238920 patent/CN2219407Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557349A (en) * | 2013-11-15 | 2014-02-05 | 成都力锋清洗机股份有限公司 | Multifunctional pressure test valve bank |
| CN109882467A (en) * | 2019-04-11 | 2019-06-14 | 陈艳艳 | A kind of hydraulic cylinder safety valve and its application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |