CN202251149U - Hydraulic control system capable of changing along with change of instant pressure difference - Google Patents
Hydraulic control system capable of changing along with change of instant pressure difference Download PDFInfo
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- CN202251149U CN202251149U CN2011203311076U CN201120331107U CN202251149U CN 202251149 U CN202251149 U CN 202251149U CN 2011203311076 U CN2011203311076 U CN 2011203311076U CN 201120331107 U CN201120331107 U CN 201120331107U CN 202251149 U CN202251149 U CN 202251149U
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Abstract
A hydraulic control system capable of changing along with change of instant pressure difference is composed of an electric cabinet, a pressure reducing valve, an overflow valve, a check valve, an oil pump, an oil tank, a changeable throttle valve, a machine seat, a pressure sensor, an anvil, a hydraulic cylinder, a programmable logic controller (PLC), a change valve, an accumulator and a piston rod. An upper cavity oil channel and a lower cavity oil channel of the hydraulic cylinder are respectively connected with two ports on one side of the change valve, one of two ports on the other side of the change valve is connected with flowing-out ends of the accumulator, the overflow valve and the check valve, the flowing-in end of the check valve is connected with the oil pump, the lower end of the oil pump is connected with the oil tank, the other port is connected with the pressure reducing valve, the other end of the pressure reducing valve is connected with the changeable throttle valve, and the other end of the changeable throttle valve is connected with the oil tank. The anvil and the machine seat are positioned under the outer end of the piston rod, the pressure sensor is arranged between the anvil and the machine seat, the pressure sensor is electrically connected with the PLC, and the electric cabinet is respectively and electrically connected with the oil pump, the change valve and the PLC. The hydraulic control system is applied to cracking processes of walnuts and can stop pressing in the moment the walnuts are broken, thereby effectively guaranteeing quality requirements for cracking the walnuts. Due to the characteristic, the hydraulic control system can be applied to other machinery and occasions with similar requirements.
Description
Technical field
The utility model relates to a kind of hydraulic control system that changes because of the instantaneous pressure difference.
Background technique
The category of hydraulic system applications is very wide in actual life, multiple function such as it can be realized propagation of pressure, supercharging, exerts pressure, pressurize, buffering.But catch the moment intelligent hydraulic system that changes of relative pressure difference at random according to system what is heard is not but arranged.
Summary of the invention
The utility model provides a kind of hydraulic control system that changes because of the instantaneous pressure difference; It is to catch pressure signal through pressure transducer; Signal is transferred to programmable controller and pre-set programs is analysed and compared; When the pressure difference changing value of certain moment satisfies when pre-seting condition, system will get into program control automatically, can reach different operation effectivenesses according to the different preset program.Advantages such as it has system stability, and adjustable in pressure saves, and inertia is little, and it is fast to commutate.This case will be rolled with walnut and split processing and set forth as embodiment: force the common method of walnut cracking that the medicament infusion method is arranged at present, freezing temperature differential method, mechanical impelling bump method, mechanical backing method and the manual method of splitting of striking.But said method is all not satisfactory, certainly will have residual liquor because medicament soaks, so be difficult to satisfy the food sanitation requirement; The temperature differential method cycle is long, and energy consumption is big; The walnut cracking degree great disparity that machinery impelling bump method and mechanical backing method are processed, because the intensity of the profile size of walnut and walnut shell is respectively other to some extent, walnut does not ftracture so these class methods can cause unavoidably, cracking, cracked irregular phenomenon; Then efficient is extremely low as for beaing by hand.And the utility model should carry out continuous productive process processing one by one to walnut, and it is not limited by walnut profile size and walnut casing rigidity, can guarantee the quality requirement of walnut cracking basically.
In order to address the above problem; The utility model realizes that through following technological scheme it is made up of regulator cubicle, reduction valve, relief valve, one-way valve, oil pump, oil sump, variable throttle valve, support, pressure transducer, anvil, oil hydraulic cylinder, PLC, selector valve, accumulator, piston rod.The upper and lower cavity oil circuit of oil hydraulic cylinder is connected with two interfaces of selector valve one side respectively, two interfaces of selector valve opposite side, and an interface is connected with the outflow end of accumulator, relief valve and one-way valve, and the inflow end of one-way valve connects oil pump, and the oil pump lower end connects oil sump; Another interface is connected with reduction valve, and the other end of reduction valve connects variable throttle valve, and the other end of variable throttle valve connects oil sump.Described selector valve is the 3-position 4-way solenoid directional control valve, below the piston rod outer end, is provided with anvil and support, between anvil and support, is provided with pressure transducer.Pressure transducer is electrically connected with PLC; Regulator cubicle is electrically connected with oil pump, selector valve, PLC respectively.
Start oil pump, accumulator begins stored energy, and the relief valve action makes system pressure be in a metastable state when pressure reaches certain value.Instruction selector valve lower position gets electric, and hydraulic oil is through the epicoele of selector valve inflow oil hydraulic cylinder, and cavity of resorption hydraulic oil enters oil sump after reduction valve and variable throttle valve, and piston rod outwards stretches; The piston rod head extruding is placed on the walnut on the anvil, and the walnut pressure increases progressively gradually, when walnut exceeds the ultimate pressure of being born; Therefore walnut can suffer breakage, has the process that a pressure discharges suddenly in the moment of walnut breakage, and the process of all variation in pressure all will be caught by pressure transducer; And be transferred to PLC to signal, and PLC analyses and compares transducing signal and the condition of pre-seting, thus cataclysm responds to pressure; Switch selector valve rapidly to the top position, hydraulic oil is flowed out from the oil hydraulic cylinder epicoele, cavity of resorption flows into; Piston rod is withdrawn in cylinder, walnut off-load, system reset.
Reduction valve makes the pressure reduction trend at variable throttle valve two ends constant in the system, through adjusting variable throttle valve to reach the purpose of improving speed load characteristic.The utility model does not receive the restriction of piston rod stroke, speed and action time, can realize effectively that the pressurized walnut was terminated in damaged moment to exert pressure.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is the utility model schematic diagram.
Among the figure 1, regulator cubicle; 2, reduction valve; 3, relief valve; 4, one-way valve; 5, oil pump; 6, oil sump; 7, variable throttle valve; 8, support; 9, pressure transducer; 10, anvil; 11, oil hydraulic cylinder; 11-1, piston rod; 12, PLC; 13, selector valve; 14, accumulator; 01, walnut.
Embodiment
The utility model is a kind of hydraulic control system that changes because of the instantaneous pressure difference; The upper and lower cavity oil circuit of oil hydraulic cylinder (11) is connected with two interfaces of selector valve (13) respectively; The epicoele oil circuit is connected with the outflow end of accumulator (14), relief valve (3) and one-way valve (4) behind selector valve (13); The inflow end of one-way valve (4) connects oil pump (5), and oil pump (5) lower end connects oil sump (6); The cavity of resorption oil circuit is connected with reduction valve (2) behind selector valve (13), and the other end of reduction valve (2) connects variable throttle valve (7), and the other end of variable throttle valve (7) connects oil sump (6).Described selector valve (13) is the 3-position 4-way solenoid directional control valve, is provided with anvil (10) and support (8) in the below of piston rod (11-1) outer end, between anvil (10) and support (8), is provided with pressure transducer (9).Pressure transducer (9) is electrically connected with PLC (12); Regulator cubicle (1) is electrically connected with oil pump (5), selector valve (13), PLC (12) respectively.
Start oil pump (5), accumulator (14) beginning stored energy, relief valve when pressure reaches certain value (3) action makes system pressure be in a metastable state.Instruction selector valve (13) lower position gets electric, and hydraulic oil is through the epicoele of selector valve (13) inflow oil hydraulic cylinder (11), and cavity of resorption hydraulic oil enters oil sump (6) after reduction valve (2) and variable throttle valve (7); Piston rod (11-1) outwards stretches, and the extruding of piston rod (11-1) head is placed on the walnut (01) on the anvil (10), and walnut (01) pressure increases progressively gradually; When walnut (01) when exceeding the ultimate pressure of being born, therefore walnut (01) can suffer breakage, has the process that a pressure discharges suddenly in walnut (01) damaged moment; The process of all variation in pressure all will be caught by pressure transducer (9), and be transferred to PLC (12) to signal, and PLC (12) analyses and compares transducing signal and the condition of pre-seting; Thereby cataclysm responds to pressure, switches selector valve (13) rapidly to the top position, and hydraulic oil is flowed out from oil hydraulic cylinder (11) epicoele; Cavity of resorption flows into; Piston rod (11-1) is withdrawn in cylinder, walnut (01) off-load, system reset.
Claims (1)
1. hydraulic control system that changes because of the instantaneous pressure difference; Form by regulator cubicle, reduction valve, relief valve, one-way valve, oil pump, oil sump, variable throttle valve, support, pressure transducer, anvil, oil hydraulic cylinder, PLC, selector valve, accumulator, piston rod; The upper and lower cavity oil circuit that it is characterized in that oil hydraulic cylinder is connected with two interfaces of selector valve one side respectively; Two interfaces of selector valve opposite side, an interface is connected with the outflow end of accumulator, relief valve and one-way valve, and the inflow end of one-way valve connects oil pump; The oil pump lower end connects oil sump; Another interface is connected with reduction valve, and the other end of reduction valve connects variable throttle valve, and the other end of variable throttle valve connects oil sump; Described selector valve is the 3-position 4-way solenoid directional control valve, below the piston rod outer end, is provided with anvil and support, between anvil and support, is provided with pressure transducer, and pressure transducer is electrically connected with PLC; Regulator cubicle is electrically connected with oil pump, selector valve, PLC respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203311076U CN202251149U (en) | 2011-08-28 | 2011-08-28 | Hydraulic control system capable of changing along with change of instant pressure difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203311076U CN202251149U (en) | 2011-08-28 | 2011-08-28 | Hydraulic control system capable of changing along with change of instant pressure difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251149U true CN202251149U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203311076U Expired - Fee Related CN202251149U (en) | 2011-08-28 | 2011-08-28 | Hydraulic control system capable of changing along with change of instant pressure difference |
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| CN (1) | CN202251149U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105563277A (en) * | 2016-01-21 | 2016-05-11 | 久盛地板有限公司 | Surface transverse-grinding process and manufacturing machine for solid wood floor |
| CN105805088A (en) * | 2016-06-03 | 2016-07-27 | 南通纺都置业有限公司 | Testing device for impact force at different positions of oil cylinder |
| CN105864153A (en) * | 2016-06-03 | 2016-08-17 | 南通纺都置业有限公司 | Device for testing impact force of oil cylinder at different oil pressures |
| CN105952712A (en) * | 2016-06-03 | 2016-09-21 | 南通纺都置业有限公司 | Device for testing impact force of single-rod air cylinder under different air pressures |
| CN106092404A (en) * | 2016-06-03 | 2016-11-09 | 南通纺都置业有限公司 | A kind of single pole cylinder various location impact force testing device |
| CN109105910A (en) * | 2018-08-08 | 2019-01-01 | 吴静 | A kind of fruit to day fruit opens casing equipment |
| CN109730333A (en) * | 2019-01-31 | 2019-05-10 | 安徽省鑫矿液压机械有限责任公司 | A kind of nut opening scourer |
-
2011
- 2011-08-28 CN CN2011203311076U patent/CN202251149U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105563277A (en) * | 2016-01-21 | 2016-05-11 | 久盛地板有限公司 | Surface transverse-grinding process and manufacturing machine for solid wood floor |
| CN105563277B (en) * | 2016-01-21 | 2018-06-22 | 久盛地板有限公司 | The manufacture machinery of the horizontal sand in solid wooden floor board surface |
| CN105805088A (en) * | 2016-06-03 | 2016-07-27 | 南通纺都置业有限公司 | Testing device for impact force at different positions of oil cylinder |
| CN105864153A (en) * | 2016-06-03 | 2016-08-17 | 南通纺都置业有限公司 | Device for testing impact force of oil cylinder at different oil pressures |
| CN105952712A (en) * | 2016-06-03 | 2016-09-21 | 南通纺都置业有限公司 | Device for testing impact force of single-rod air cylinder under different air pressures |
| CN106092404A (en) * | 2016-06-03 | 2016-11-09 | 南通纺都置业有限公司 | A kind of single pole cylinder various location impact force testing device |
| CN109105910A (en) * | 2018-08-08 | 2019-01-01 | 吴静 | A kind of fruit to day fruit opens casing equipment |
| CN109105910B (en) * | 2018-08-08 | 2021-02-26 | 南通海鑫信息科技有限公司 | Fruit shell opening equipment for skully fruits |
| CN109730333A (en) * | 2019-01-31 | 2019-05-10 | 安徽省鑫矿液压机械有限责任公司 | A kind of nut opening scourer |
| CN109730333B (en) * | 2019-01-31 | 2022-07-26 | 安徽省鑫矿液压机械有限责任公司 | Nut opening huller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20120828 |