CN203680578U - Hydraulic control device of internal mixer - Google Patents

Hydraulic control device of internal mixer Download PDF

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Publication number
CN203680578U
CN203680578U CN201320795163.4U CN201320795163U CN203680578U CN 203680578 U CN203680578 U CN 203680578U CN 201320795163 U CN201320795163 U CN 201320795163U CN 203680578 U CN203680578 U CN 203680578U
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CN
China
Prior art keywords
oil
pressure
valve
hydraulic
floating weight
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CN201320795163.4U
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Chinese (zh)
Inventor
彭志深
金进尧
曲学新
郭强
苏长伟
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益阳橡胶塑料机械集团有限公司
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Priority to CN201320795163.4U priority Critical patent/CN203680578U/en
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Publication of CN203680578U publication Critical patent/CN203680578U/en

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Abstract

The utility model discloses a hydraulic control device and a hydraulic control method of an internal mixer. The hydraulic control device comprises a main PLC (Programmable Logic Controller) of the internal mixer and a power source composed of a hydraulic pump and an energy accumulator; the hydraulic control device is characterized in that the hydraulic pump comprises a high-pressure variable displacement piston pump for supplying oil to an upper top peg and a double vane pump for supplying oil to a discharge door and a charging door, the double vane pump is connected with an auxiliary energy accumulator by an energy accumulator safety valve block, the pressure and the speed of the upper top peg are controlled by the main PLC of the internal mixer, the pressure control of the upper top peg is realized by pressure control on a rod cavity of an oil cylinder of the upper top peg, and the main PLC of the internal mixer realizes smooth control on the speed of opening and closing the discharging door by a proportional directional valve and a rotary oil cylinder. The hydraulic control device of the internal mixer is simplified, the problems of high fault rate of a hydraulic pressure station and short service life of a high-pressure pump are solved, the closed-loop control on pressure of the upper top peg is realized by the main PLC of the internal mixer, the pressure of the upper top peg can be stably controlled, the precision is high, the milling quality is improved, and the smooth control on opening and closing of the discharging door is achieved.

Description

Banbury hydraulic control device

Technical field

The utility model relates to a kind of banbury, and specifically a kind of control of banbury particularly relates to a kind of banbury hydraulic control device.

Background technology

Banbury is the key equipment that in rubber industry, rubber raw materials is processed into semi-finished rubber, be mainly used in rubber plasticate and mixing, mainly formed by parts such as banburying chamber, reinforced material pressing device, device for discharging, transmission device and supports.

At present, reinforced material pressing device, the device for discharging of banbury often adopt hydraulic control mode, and its hydraulic power unit all adopts high pressure Variable plunger pump and the little Variable plunger pump of high pressure with remote setting to drive the action that comprises all oil cylinders such as floating weight oil cylinder, rotary oil cylinder.By the computer control of banbury, the combination of high pressure Variable plunger pump and accumulator safety valve piece, accumulator, can complete ascending, descending and the pressurization of floating weight accurately, reliably; Pressure oil another part that high pressure Variable plunger pump produces enters auxiliary control section, completes the action such as the switch of Dump gate and the switch of locking and gallery ports.In the time that each hydraulic cylinder does not move, by the little variable piston pump work of high pressure, in packing state, thereby reduce power consumption, reduce heat-dissipating.In floating weight pressure process, worked by high pressure Variable plunger pump, start ftercompction, go round and begin again.But because banbury is in mixing process, pressure constantly changes, need the continuous ftercompction of high pressure Variable plunger pump, easily cause greatly reduce its service life; And because high and low pressure pressure source does not separate, need before auxiliary control section, add pressure-reducing valve and reduce pressure, thereby cause oil impregnate or the leakage of oil of the each parts of auxiliary control section; Meanwhile, because flow is less, action when being difficult to meet floating weight, locking cylinder and Dump gate rotary oil cylinder, thus causing moving back fast lock, Dump gate is opened slowly, finally causes lock pad and locking sliding block serious wear, and the service life of lock pad is very short.

In the hydraulic control of floating weight, its ram rises, ram declines, pressurize, float the each operating mode of stone roller all realizes toward given plate input current signal and open and close ring switching signal by floating weight PLC.Although, hydraulic control mode can be accomplished by open loop control the quick ascending, descending of floating weight, ram, but, when realize pressurization and floating stone roller by closed-loop control, due to floating stone roller it require floating weight be subject to oil pressure and sizing material make a concerted effort be close to zero, and in mixing process, sizing material to the pressure of floating weight always in quick variable condition, therefore, be difficult to accomplish that the pressure reduction of rodless cavity and rod chamber is zero, in practice, almost can not adjust floating stone roller effect, floating stone roller is controlled weak effect, the more difficult high-precision pressure control of accomplishing ram.Therefore, what the pressure control of in fact existing floating weight of banbury mixer adopted is open loop control, and the pressure oscillation of its floating weight is very large, is difficult to realize the requirement of high-precision refining glue, and changes ram piston pressure in refining one car glue.And while use, must consider the type of the main PLC of floating weight PLC and banbury, field adjustable complexity.

In the hydraulic control of Dump gate, the hydraulic control device of rotary oil cylinder generally comprises solenoid directional control valve, stacked unidirectional valve, the stacked double directional throttle valve of solenoid directional control valve, stacked unidirectional valve, stacked double directional throttle valve and one group of little latus rectum of one group of large latus rectum.Adopt a monodentate bar or double rack, gear sliding rotary hydraulic oil cylinder driving Dump gate, realize switching fast, at a slow speed by 4 approach switch controls.Fast at closing time, large latus rectum solenoid directional control valve, little latus rectum solenoid directional control valve obtain electric, and two valves are opened simultaneously, realize the action of closing the door fast; At a slow speed at closing time, large latus rectum solenoid directional control valve dead electricity, realizes the action of closing the door at a slow speed.While opening the door fast, large latus rectum solenoid directional control valve, little latus rectum solenoid directional control valve obtain electric, and two valves are opened simultaneously, realize the action of opening the door fast; While opening the door at a slow speed, large latus rectum solenoid directional control valve dead electricity, realizes the action of opening the door at a slow speed.In the time of real work, there is following point: the one, soon, while switching at a slow speed, bolt shake in lower top is larger, and the basis of banbury is connected with to adverse effect; The 2nd, when lower top bolt switch gate puts in place, impact very greatly, and speed cannot adjust, and easily causes the damage of rotary oil cylinder and Dump gate; The 3rd, owing to adopting Sandwich plate valve, control Dump gate switch Sandwich plate valve gathers into folds very high, adds alternating shock load, is more prone to cause Sandwich plate valve piece oil impregnate, leakage of oil.

Summary of the invention

The purpose of this utility model is to provide a kind of banbury hydraulic control device, and its Hydraulic Station pumping plant by high and low pressure fuel feeding separately; Simplify the hydraulic control device of floating weight oil cylinder, really realize the closed-loop control of ram piston pressure; Passing ratio reversal valve is realized the level and smooth control of Dump gate open and close door speed.

The utility model is to adopt following technical scheme to realize its goal of the invention, a kind of banbury hydraulic control device, the power source that it comprises banburying owner PLC, is made up of hydraulic pump, accumulator, described hydraulic pump is included as the high pressure Variable plunger pump of floating weight fuel feeding, for the pair vane pump of Dump gate, gallery ports fuel feeding, described pair vane pump connects with auxiliary energy-storage device by auxiliary energy-storage device safety valve piece; Floating weight is leaded up to oil pipe with hydraulic oil and is connected with the rodless cavity of floating weight oil cylinder through high pressure Variable plunger pump, oil inlet P 1, proportional servo valve PLV, electromagnetic cartridge valve YV1, electromagnetic cartridge valve YV2; Another oil circuit is connected with the rod chamber of floating weight oil cylinder through oil inlet P 1, proportional servo valve PLV, electromagnetic cartridge valve YV4 by oil pipe, and the rod chamber of floating weight oil cylinder is connected with oil inlet P 1 by the differential check valve that rises; Between electromagnetic cartridge valve YV1, electromagnetic cartridge valve YV2, be also connected with the electromagnetic cartridge valve YV3 being connected with oil return inlet T 2; The oil inlet P of proportional servo valve PLV is connected with oil inlet P 1, and the oil return inlet T of proportional servo valve PLV is connected with oil return inlet T 1; Rotary oil cylinder is leaded up to oil pipe with hydraulic oil and is connected with one end of rotary oil cylinder through pair vane pump, oil inlet P 2, proportional reversing valve; Another oil circuit is by oil pipe through being connected with the other end of rotary oil cylinder through pair vane pump, oil inlet P 2, proportional reversing valve, and the oil return opening of proportional reversing valve is connected with oil return inlet T 2.

The utility model is provided with high pressure filter on the in-line for floating weight fuel feeding.

The utility model is provided with return filter on the return line for floating weight fuel feeding.

Owing to adopting technique scheme, the utility model has been realized goal of the invention preferably, has simplified banbury hydraulic control device, and the one, solve that Hydraulic Station fault rate is high, high-pressure pump low problem in service life; The 2nd, control the closed-loop control that has realized ram piston pressure by banburying owner PLC, ram piston pressure control is stable, and precision is high, has improved compound quality; The 3rd, realize the level and smooth control of Dump gate open and close door speed.

Brief description of the drawings

Fig. 1 is the structural representation of prior art hydraulic power unit;

Fig. 2 is the hydraulic control schematic diagram of prior art floating weight;

Fig. 3 is the control principle block diagram of prior art floating weight;

Fig. 4 is the hydraulic control schematic diagram of prior art rotary oil cylinder;

Fig. 5 is the structural representation of the utility model hydraulic power unit;

Fig. 6 is the hydraulic control schematic diagram of the utility model floating weight;

Fig. 7 is the control principle block diagram of the utility model floating weight.

Fig. 8 is the hydraulic control schematic diagram of the utility model rotary oil cylinder.

Detailed description of the invention

Below in conjunction with drawings and Examples, the utility model is described in further detail.

As shown in Figure 1, at present, reinforced material pressing device, the device for discharging of banbury often adopt hydraulic control mode, and existing hydraulic power unit all adopts high pressure Variable plunger pump 12 and the little Variable plunger pump 11 of high pressure with remote setting to drive the action that comprises all oil cylinders such as floating weight oil cylinder, rotary oil cylinder.Computer (main PLC) by banbury is controlled, and the combination of high pressure Variable plunger pump 12 and accumulator safety valve piece 13, accumulator 14, can complete ascending, descending and the pressurization of floating weight accurately, reliably; Pressure oil another part that high pressure Variable plunger pump 12 produces enters into auxiliary control section, completes the action such as the switch of Dump gate and the switch of locking and gallery ports.When high pressure Variable plunger pump 12 is during in pressurize, inner oil stream only can provide the lubricated of high pressure Variable plunger pump 12, the upper pressure limit of setting up due to the little Variable plunger pump 11 of high pressure is higher than high pressure Variable plunger pump 12, the little Variable plunger pump 11 of high pressure is in ftercompction state, thereby reduction power consumption, reduces heat-dissipating.In floating weight pressure process, when lower the prescribing a time limit that system pressure is set lower than high pressure Variable plunger pump pressure switch, high pressure Variable plunger pump 12 is worked, and starts ftercompction, goes round and begins again.But because banbury is in mixing process, pressure constantly changes, need the continuous ftercompction of high pressure Variable plunger pump 12, easily cause greatly reduce its service life; And because high and low pressure pressure source does not separate, need before auxiliary control section, add pressure-reducing valve and reduce pressure, thereby cause oil impregnate or the leakage of oil of the each parts of auxiliary control section; Meanwhile, because flow is less, action when being difficult to meet floating weight, locking cylinder and Dump gate rotary oil cylinder, thus causing moving back fast lock, Dump gate is opened slowly, finally causes lock pad and locking sliding block serious wear, and the service life of lock pad is very short.

From Fig. 2, Fig. 3, in the hydraulic control of existing floating weight of banbury mixer, its ram rises, ram declines, pressurize, float the each operating mode of stone roller all realizes toward given plate input current signal and open and close ring switching signal by floating weight PLC.In rising, the decline of ram 4 are controlled, what adopt is flow open loop control, be that PLC inputs given signal to the given plate of flow, hydraulic oil is the oil-feed to rodless cavity 2 or the rod chamber 1 of floating weight oil cylinder through oil inlet P 1, proportional servo valve PLV, electromagnetic cartridge valve YVA or proportional servo valve PLV, check valve 10 with damping port by oil pipe, realizes rising or the decline of floating weight 3, ram 4.When rising, the oil inlet P that hydraulic oil oil return enters proportional servo valve PLV by oil pipe through the rod chamber 1 of floating weight oil cylinder, the differential check valve 8 that rises, realizes differential circuit.In the time of fast-descending, for the rod chamber 1 that prevents floating weight oil cylinder easily produces negative vacuum, by check valve 9, from oil return inlet T 1 repairing, upward stroke or descending stroke are controlled by travel switch 7.In the pressurization of ram 4, floating stone roller are controlled, what adopt is pressure closed loop control, be that floating weight PLC inputs given signal to the given plate of pressure, rodless cavity pressure sensor 5, rod chamber pressure sensor 6 detect respectively the pressure in rodless cavity 2,1 liang of chamber of rod chamber, the pressure difference value of rodless cavity pressure and rod chamber pressure (converting through oil cylinder Area Ratio) is fed back to floating weight PLC, its difference and given signal relatively after, passing ratio servo valve PLV, to rodless cavity 2 or rod chamber 1 oil-feed of floating weight oil cylinder, realizes pressurization or the floating stone roller of floating weight 3, ram 4.Although, hydraulic control mode can be accomplished by open loop control the fast lifting of ram 4, but, in the time realizing the pressurization of ram 4 by closed-loop control and float stone roller, due to floating stone roller it require floating weight 3 be subject to oil pressure and sizing material make a concerted effort be close to zero, and in mixing process, sizing material to the pressure of floating weight always in quick variable condition, therefore, be difficult to accomplish that rodless cavity 2 and the pressure reduction of rod chamber 1 are zero, in practice, almost can not adjust floating stone roller effect, floating stone roller is controlled weak effect, the more difficult high-precision pressure control of accomplishing ram 4.Therefore, what the pressure control of in fact existing floating weight of banbury mixer 3 adopted is open loop control, and the pressure oscillation of its floating weight 3 is very large, is difficult to realize the requirement of high-precision refining glue.

As shown in Figure 4, in the hydraulic control of Dump gate, the hydraulic control device of rotary oil cylinder generally comprises solenoid directional control valve, stacked unidirectional valve, the stacked double directional throttle valve of solenoid directional control valve, stacked unidirectional valve, stacked double directional throttle valve and one group of little latus rectum of one group of large latus rectum.Adopt a monodentate bar or double rack, gear sliding rotary oil cylinder 15 to drive Dump gate, realize switching fast, at a slow speed by 4 approach switch controls.Fast at closing time, large latus rectum solenoid directional control valve 17, little latus rectum solenoid directional control valve 16 obtain electric, and two valves are opened simultaneously, realize the action of closing the door fast; At a slow speed at closing time, large latus rectum solenoid directional control valve 17 dead electricity, little latus rectum solenoid directional control valve 16 obtains electric, realizes the action of closing the door at a slow speed.While opening the door fast, large latus rectum solenoid directional control valve 17, little latus rectum solenoid directional control valve 16 obtain electric, and two valves are opened simultaneously, realize the action of opening the door fast; While opening the door at a slow speed, large latus rectum solenoid directional control valve 17 dead electricity, little latus rectum solenoid directional control valve 16 obtains electric, realizes the action of opening the door at a slow speed.In the time of real work, there is following point: the one, soon, while switching at a slow speed, bolt shake in lower top is larger, and the basis of banbury is connected with to adverse effect; The 2nd, when lower top bolt switch gate puts in place, impact very greatly, and speed cannot adjust, and easily causes the damage of rotary oil cylinder 15 and Dump gate; The 3rd, owing to adopting Sandwich plate valve, control Dump gate switch Sandwich plate valve gathers into folds very high, adds alternating shock load, is more prone to cause Sandwich plate valve piece oil impregnate, leakage of oil.

From Fig. 5, Fig. 6, Fig. 7, Fig. 8, a kind of banbury hydraulic control device, the power source that it comprises banburying owner PLC, is made up of hydraulic pump, accumulator, described hydraulic pump is included as the high pressure Variable plunger pump 12 of floating weight fuel feeding, for the pair vane pump 18 of Dump gate, gallery ports fuel feeding, described pair vane pump 18 connects with auxiliary energy-storage device 22 by auxiliary energy-storage device safety valve piece 19; Floating weight is leaded up to oil pipe with hydraulic oil and is connected with the rodless cavity 2 of floating weight oil cylinder through high pressure Variable plunger pump 12, oil inlet P 1, proportional servo valve PLV, electromagnetic cartridge valve YV1, electromagnetic cartridge valve YV2; Another oil circuit is connected with the rod chamber 1 of floating weight oil cylinder through oil inlet P 1, proportional servo valve PLV, electromagnetic cartridge valve YV4 by oil pipe, and the rod chamber 1 of floating weight oil cylinder is connected with oil inlet P 1 by the differential check valve 8 that rises; Between electromagnetic cartridge valve YV1, electromagnetic cartridge valve YV2, be also connected with the electromagnetic cartridge valve YV3 being connected with oil return inlet T 2; The oil inlet P of proportional servo valve PLV is connected with oil inlet P 1, and the oil return inlet T of proportional servo valve PLV is connected with oil return inlet T 1; Rotary oil cylinder 15 use hydraulic oil are leaded up to oil pipe and are connected with one end of rotary oil cylinder 15 through pair vane pump 18, oil inlet P 2, proportional reversing valve 23; Another oil circuit is by oil pipe through being connected with the other end of rotary oil cylinder 15 through pair vane pump 18, oil inlet P 2, proportional reversing valve 23, and the oil return opening of proportional reversing valve 23 is connected with oil return inlet T 2.

When the utility model application, the required high-pressure oil feed of floating weight is provided by high pressure Variable plunger pump 12, and the required low pressure oil supplies of slave part such as the switch of the switch of Dump gate and locking and gallery ports are provided by pair vane pump 18.Pair vane pump 18 is in the time that slave part magnetic valve moves, and fuel feeding simultaneously, ensures enough fast speed, and under the state of pressurize (being that slave part magnetic valve is failure to actuate), large vane pump off-load in pair vane pump 18, vanelets pump work, thereby the heat-dissipating of minimizing system.Meanwhile, on the in-line for floating weight fuel feeding, be provided with high pressure filter 20, protected proportional servo valve PLV, reduced fault rate, extended service life; On the return line for floating weight fuel feeding, be provided with return filter 21, the oil return of floating weight part is cleaned, reduced fault rate.Like this, because high and low pressure separates, greatly improve the service life of high pressure Variable plunger pump 12, and simultaneously because pressure is lower, the magnetic valve of slave part and Sandwich plate valve oil impregnate or oil leakage phenomenon also greatly reduce, and have reduced the care and maintenance cost of hydraulic system.

The utility model is in the hydraulic control of floating weight, in the time that ram rises, electromagnetic cartridge valve YV1, electromagnetic cartridge valve YV2 obtain electric connection, electromagnetic cartridge valve YV3 dead electricity is closed, and hydraulic oil enters the rodless cavity 2 of floating weight oil cylinder through oil inlet P, the A mouth of proportional servo valve PLV, electromagnetic cartridge valve YV1, the electromagnetic cartridge valve YV2 of oil inlet P 1, proportional servo valve PLV by oil pipe; Simultaneously, electromagnetic cartridge valve YV4 obtains electric closing, the oil inlet P that hydraulic oil oil return enters proportional servo valve PLV by oil pipe through the rod chamber 1 of floating weight oil cylinder, the differential check valve 8 that rises, realize differential circuit, floating weight 3 drives ram 4 to rise, the rate of climb is definite by the open amount of banburying owner PLC control ratio servo valve PLV, and upward stroke is controlled by travel switch 7.

In the time that ram declines, electromagnetic cartridge valve YV4 dead electricity is connected, electromagnetic cartridge valve YV1, electromagnetic cartridge valve YV2 obtain electric connection, electromagnetic cartridge valve YV3 dead electricity is closed, hydraulic oil by oil pipe through the oil inlet P of oil inlet P 1, proportional servo valve PLV, the B mouth of proportional servo valve PLV, the rod chamber 1 that electromagnetic cartridge valve YV4 enters floating weight oil cylinder; Hydraulic oil oil return enters oil return inlet T 1 by oil pipe through the oil return inlet T of the rodless cavity 2 of floating weight oil cylinder, electromagnetic cartridge valve YV2, electromagnetic cartridge valve YV1, proportional servo valve PLV, floating weight 3 drives ram 4 to decline, decrease speed is definite by the open amount of banburying owner PLC control ratio servo valve PLV, and descending stroke is controlled by travel switch 7.

In the time of pressurization, electromagnetic cartridge valve YV2, electromagnetic cartridge valve YV3 obtain electric connection, electromagnetic cartridge valve YV1 dead electricity is closed, electromagnetic cartridge valve YV4 dead electricity connect, hydraulic oil by oil pipe through the oil inlet P of oil inlet P 1, proportional servo valve PLV, the B mouth of proportional servo valve PLV, the rod chamber 1 that electromagnetic cartridge valve YV4 enters floating weight oil cylinder; Hydraulic oil oil return enters oil return inlet T 2 by oil pipe through rodless cavity 2, electromagnetic cartridge valve YV2, the electromagnetic cartridge valve YV3 of floating weight oil cylinder, realize the pressurization to floating weight 3, ram 4 is to sizing material banburying, the pressure of floating weight 3 is set by banburying owner PLC, the pressure signal that rod chamber pressure sensor 6 detects feeds back to banburying owner PLC, and the open amount of passing ratio servo valve PLV is realized the pressure control of floating weight 3.

In the time of floating stone roller, electromagnetic cartridge valve YV1 dead electricity is closed, and electromagnetic cartridge valve YV2, electromagnetic cartridge valve YV3 obtain electric connection, and electromagnetic cartridge valve YV4 obtains electric closing, and the pressure of floating weight 3 is zero, and ram 4 fluctuates with sizing material.

The utility model is due in the pressure closed loop control of floating weight 3, the pressure of the rodless cavity 2 of floating weight oil cylinder does not participate in controlling, only the rod chamber 1 of floating weight oil cylinder is carried out to pressure control, be that electromagnetic cartridge valve YV3 obtains and electric the rodless cavity of floating weight oil cylinder 2 is connected with oil return inlet T 2, make the pressure of rodless cavity 2 of floating weight oil cylinder close to zero-pressure.Like this, eliminated the impact of pressure jump, the dynamic duty of floating weight oil cylinder there will not be cavitation and causes vibration problem, and on-the-spot pressure calibration and debugging are more convenient, and according to pid algorithm, do not need to consider oil cylinder Area Ratio problem again.Particularly can make pressure and the speed of floating weight 3, directly be controlled by banburying owner PLC, not need independent PLC to control pressure and the speed of floating weight 3, also need not consider the type of banburying owner PLC, apply simple and reliablely, field adjustable is simple.Most important meaning is: the banbury after improvement is set by banburying owner PLC, can realize floating stone roller refining glue or binder removal, and in mixing process, floating weight 3 pressure stabilitys, will improve the binder performance of floating weight 3, improve compound quality.

The utility model, in the hydraulic control of rotary oil cylinder 15, is controlled switching at a slow speed soon of Dump gate open and close by banburying owner PLC, proportional reversing valve 23, realizes the open loop of lower top bolt open and close door speed and smoothly controls, and controls simple, reliable.Both solved that solenoid directional control valve fault rate is high, rotary oil cylinder 15 and low problem of Dump gate life-span, the basis that has solved again banbury connects easily loosening, has reduced Sandwich plate valve piece oil impregnate, leakage of oil, is conducive to environmental protection, has reduced production cost.

Claims (3)

1. a banbury hydraulic control device, the power source that it comprises banburying owner PLC, is made up of hydraulic pump, accumulator, it is characterized in that described hydraulic pump is included as the high pressure Variable plunger pump of floating weight fuel feeding, for the pair vane pump of Dump gate, gallery ports fuel feeding, described pair vane pump connects with auxiliary energy-storage device by auxiliary energy-storage device safety valve piece; Floating weight is leaded up to oil pipe with hydraulic oil and is connected with the rodless cavity of floating weight oil cylinder through high pressure Variable plunger pump, oil inlet P 1, proportional servo valve PLV, electromagnetic cartridge valve YV1, electromagnetic cartridge valve YV2; Another oil circuit is connected with the rod chamber of floating weight oil cylinder through oil inlet P 1, proportional servo valve PLV, electromagnetic cartridge valve YV4 by oil pipe, and the rod chamber of floating weight oil cylinder is connected with oil inlet P 1 by the differential check valve that rises; Between electromagnetic cartridge valve YV1, electromagnetic cartridge valve YV2, be also connected with the electromagnetic cartridge valve YV3 being connected with oil return inlet T 2; The oil inlet P of proportional servo valve PLV is connected with oil inlet P 1, and the oil return inlet T of proportional servo valve PLV is connected with oil return inlet T 1; Rotary oil cylinder is leaded up to oil pipe with hydraulic oil and is connected with one end of rotary oil cylinder through pair vane pump, oil inlet P 2, proportional reversing valve; Another oil circuit is by oil pipe through being connected with the other end of rotary oil cylinder through pair vane pump, oil inlet P 2, proportional reversing valve, and the oil return opening of proportional reversing valve is connected with oil return inlet T 2.
2. banbury hydraulic control device according to claim 1, is characterized in that being provided with high pressure filter on the in-line for floating weight fuel feeding.
3. banbury hydraulic control device according to claim 1, is characterized in that being provided with return filter on the return line for floating weight fuel feeding.
CN201320795163.4U 2013-12-06 2013-12-06 Hydraulic control device of internal mixer CN203680578U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320795163.4U CN203680578U (en) 2013-12-06 2013-12-06 Hydraulic control device of internal mixer

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Application Number Priority Date Filing Date Title
CN201320795163.4U CN203680578U (en) 2013-12-06 2013-12-06 Hydraulic control device of internal mixer

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CN203680578U true CN203680578U (en) 2014-07-02

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103660061A (en) * 2013-12-06 2014-03-26 益阳橡胶塑料机械集团有限公司 Hydraulic control apparatus for internal mixer
CN104632737A (en) * 2014-12-30 2015-05-20 大连维乐液压制造有限公司 Flying shear movable hydraulic station
CN105485075A (en) * 2016-02-24 2016-04-13 益阳新华美机电科技有限公司 Rubber mixing mill roller hydraulic driving control system and method
CN108843844A (en) * 2018-08-23 2018-11-20 沈阳东北电力调节技术有限公司 Fire prevention electro-hydraulic actuator
EP3315792A4 (en) * 2015-06-24 2019-03-13 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Hydraulic drive device and method for controlling same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103660061A (en) * 2013-12-06 2014-03-26 益阳橡胶塑料机械集团有限公司 Hydraulic control apparatus for internal mixer
CN103660061B (en) * 2013-12-06 2015-12-30 益阳橡胶塑料机械集团有限公司 Banbury hydraulic control device
CN104632737A (en) * 2014-12-30 2015-05-20 大连维乐液压制造有限公司 Flying shear movable hydraulic station
CN104632737B (en) * 2014-12-30 2017-01-25 大连维乐液压制造有限公司 Flying shear movable hydraulic station
EP3315792A4 (en) * 2015-06-24 2019-03-13 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Hydraulic drive device and method for controlling same
CN105485075A (en) * 2016-02-24 2016-04-13 益阳新华美机电科技有限公司 Rubber mixing mill roller hydraulic driving control system and method
CN108843844A (en) * 2018-08-23 2018-11-20 沈阳东北电力调节技术有限公司 Fire prevention electro-hydraulic actuator

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Granted publication date: 20140702

Effective date of abandoning: 20151230

C25 Abandonment of patent right or utility model to avoid double patenting