CN211314691U - Sorting control hydraulic system of environmental protection equipment - Google Patents
Sorting control hydraulic system of environmental protection equipment Download PDFInfo
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- CN211314691U CN211314691U CN201922275522.3U CN201922275522U CN211314691U CN 211314691 U CN211314691 U CN 211314691U CN 201922275522 U CN201922275522 U CN 201922275522U CN 211314691 U CN211314691 U CN 211314691U
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- 230000007613 environmental effect Effects 0.000 title claims abstract description 13
- 239000003921 oil Substances 0.000 claims abstract description 337
- 230000006698 induction Effects 0.000 claims abstract description 122
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 230000008859 change Effects 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000007885 magnetic separation Methods 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000010813 municipal solid waste Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010729 system oil Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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Abstract
The utility model discloses a separation control hydraulic system of environmental protection equipment, include: an oil tank and an oil pump; the oil inlets of the manual and electric control proportional load induction control valves are connected with the oil pump; the actuating mechanisms are respectively connected with the two oil outlets of the corresponding manual and electric control proportional load sensing control valves; the pressure transmitter is used for detecting the hydraulic oil pressure value of the corresponding actuating mechanism; the open type load induction control oil inlet valve is used for adjusting the flow of hydraulic oil flowing into oil inlets of each manual and electric control proportional load induction control valve according to the change of the load; and the PWM electric control box is respectively in circuit connection with each manual and electric control proportional load induction control valve and each pressure transmitter. The utility model discloses an open load induction control inlet valve, pressure transmitter, manual and automatically controlled proportional load induction control valve and PWM signal's joint use guarantee hydraulic system's stable safe operation.
Description
Technical Field
The utility model relates to a hydraulic system technical field especially relates to a separation control hydraulic system of environmental protection equipment.
Background
The hydraulic system is a transmission system using hydraulic oil as a working medium, and is widely applied to various mechanical engineering equipment due to the advantages of small volume, convenient control, flexibility, reliability and the like, for example, in various environmental protection equipment for sorting solid wastes, the whole sorting process relates to the combined control and coordination of various actuating mechanisms driven by the hydraulic system according to the difference of the properties and the types of substances contained in the solid wastes, such as a bag breaker, a bounce screen, a hammer crusher, metal sorting equipment, a screw conveyor, magnetic separation equipment, conveying belt equipment, cover plate hook arm linkage and the like, in order to ensure the stability and the high efficiency of the sorting operation process, simultaneously consider necessary safety and robustness and reduce the failure rate, the stable and safe operation of each actuating mechanism when facing various complex working conditions is required to be ensured, and therefore, each part in the hydraulic system needs to be optimized, thereby meeting the use requirements of stable and safe operation of each actuating mechanism in the field of environmental protection equipment when simultaneously or independently operating.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sorting control hydraulic system of environmental protection equipment to solve the problem of each actuating mechanism of environmental protection equipment steady, the safe operation when simultaneously or the isolated operation.
The purpose of the utility model is realized through one of following technical scheme at least:
a sorting control hydraulic system of an environmental protection device, comprising:
the oil pump is connected with a power takeoff on an engine gearbox through a coupler, an oil inlet of the oil pump is connected to the oil tank through a pipeline, and an oil outlet of the oil pump is connected with a high-pressure filter through a pipeline;
the manual and electric control proportional load induction control valves are arranged in parallel, and oil inlets of the manual and electric control proportional load induction control valves are connected with oil outlets of the high-pressure filter;
the actuating mechanisms are respectively connected with the oil outlets A and B of the corresponding manual and electric control proportional load sensing control valves;
the pressure transmitter is used for detecting the hydraulic oil pressure value of the corresponding actuating mechanism;
the open type load induction control oil inlet valve is provided with an oil inlet, an oil return port and a control oil port, the oil inlet is connected with an oil outlet of the high-pressure filter, the oil return port is connected with the oil tank through an oil return pipeline, and the control oil port is communicated with shuttle valve loops of the manual and electric control proportional load induction control valves, so that the open type load induction control oil inlet valve adjusts the flow of hydraulic oil flowing into the oil inlet of each manual and electric control proportional load induction control valve according to the change of the load;
and the PWM electric control box is respectively in circuit connection with the manual and electric control proportional load induction control valve and each pressure transmitter and is used for controlling the corresponding manual and electric control proportional load induction control valve to act according to the set parameters and the current pressure value of each pressure transmitter.
Further, open load sensing control fuel inlet valve includes:
the pressure regulating valve is connected and arranged between an oil inlet and an oil outlet of the open load induction control oil inlet valve, and a spring cavity of the pressure regulating valve is communicated with a shuttle valve loop of the manual and electric control proportional load induction control valve;
one end of the main valve overflow valve is communicated with a shuttle valve loop of the manual and electric control proportional load induction control valve, and the other end of the main valve overflow valve is communicated with an oil return port of the open load induction control oil inlet valve;
one end of the pilot oil source reducing valve is communicated with an oil inlet of the open load induction control oil inlet valve, and the other end of the pilot oil source reducing valve is communicated with an oil return port of the open load induction control oil inlet valve;
and the pilot oil overflow valve is connected and arranged between the pilot oil source pressure reducing valve and an oil return port of the open load induction control oil inlet valve.
Further, the actuator includes:
the machine comprises a bag breaking machine motor, a bouncing screen motor, a winnowing motor, a hammer breaking machine motor, a screw conveyor motor, a vortex metal sorting motor, a conveyor belt motor, a magnetic separation motor, a swing oil cylinder, a first butt-joint conveyor belt motor and a second butt-joint conveyor belt motor, wherein the two hydraulic oil interfaces are respectively connected with an oil outlet A and an oil outlet B of a corresponding manual and electric control proportional load induction control valve;
the cover plate oil cylinder is provided with a rodless cavity which is sequentially communicated with oil outlets A of the one-way balance valve, the electromagnetic reversing valve and the corresponding manual and electric control proportional load sensing control valves, and a rod cavity which is sequentially communicated with oil outlets B of the first one-way sequence valve, the electromagnetic reversing valve and the corresponding manual and electric control proportional load sensing control valves;
and a rod cavity of the hook arm linkage oil cylinder is respectively communicated with a control port of the one-way balance valve and an oil outlet B of the corresponding manual and electric control proportional load sensing control valve, and a rodless cavity of the hook arm linkage oil cylinder is sequentially communicated with a second one-way sequence valve, the one-way balance valve and an oil outlet A of the corresponding manual and electric control proportional load sensing control valve.
Further, the pressure transmitter includes:
the third pressure transmitter is used for detecting the hydraulic oil pressure value of the motor of the bag breaking machine;
the fourth pressure transmitter is used for detecting the hydraulic oil pressure value of the hammer crusher motor;
the fifth pressure transmitter is used for detecting the hydraulic oil pressure value of the motor of the screw conveyor;
the sixth pressure transmitter is used for detecting the pressure value of the hydraulic oil in the rod cavity of the cover plate oil cylinder;
and the seventh pressure transmitter is used for detecting the pressure value of the hydraulic oil in the rodless cavity of the hook arm linkage oil cylinder.
Further, the PWM electric cabinet is specifically configured to:
when the hydraulic oil pressure values detected by the third pressure transmitter, the fourth pressure transmitter and the fifth pressure transmitter reach a preset overload threshold value, outputting PWM signals to control corresponding manual and electric control proportional load induction control valves to respectively supply oil according to opposite directions and set flow rates, so that the bag breaking machine motor, the hammer breaking machine motor and the screw conveyor motor rotate reversely;
and when the pressure value detected by the sixth pressure transmitter or the seventh pressure transmitter reaches a set threshold value, increasing the output PWM signal, controlling the corresponding manual and electric control proportional load sensing control valve to change the output flow, and driving the cover plate oil cylinder and the hook arm linkage oil cylinder to extend or retract at a set speed.
Furthermore, a cooler driven by a hydraulic motor is further arranged on an oil return pipeline connected with an oil return port of the open load induction control oil inlet valve, and an oil outlet of the oil pump is further connected with the hydraulic motor through a pipeline.
Furthermore, a cooler driven by a hydraulic motor is further arranged on an oil return pipeline connected with an oil return port of the open load induction control oil inlet valve, the oil pump is a multi-connected oil pump comprising a plurality of oil outlets, one of the oil outlets of the multi-connected oil pump is connected with the hydraulic motor through a pipeline, and the rest oil outlets are respectively connected with oil inlets of the corresponding open load induction control oil inlet valves through high-pressure filters.
Further, the multiple oil pump is any one of a multiple gear pump, a multiple vane pump and a multiple plunger pump.
Furthermore, the manual and electric control proportional load induction control valve and the open type load induction control oil inlet valve are connected into a whole through a connecting piece.
Furthermore, the oil tank is provided with a liquid level meter for detecting the oil level of the oil tank and an oil drain valve for cleaning, and an air filter is arranged on an air inlet of the oil tank; and an oil return one-way valve and an oil return filter are also connected in parallel on an oil return pipeline connected with an oil return port of the open load induction control oil inlet valve.
The utility model discloses following beneficial effect has:
the utility model discloses an open load induction control inlet valve, the manual and automatically controlled proportional load induction control valve that multichannel parallel arrangement set up, pressure transmitter and the combined use of PWM signal, mutual noninterference guarantees the steady operation of system, has guaranteed that the stability of output flow is irrelevant with the load, and can make output flow infinitely variable, realizes the stepless speed change function of system; meanwhile, the one-way sequence valve, the balance valve and the reversing valve are used for ensuring stable adjustment of the telescopic action of the execution oil cylinder, so that the use requirements of stable and safe operation of each execution mechanism in the field of environment-friendly equipment when the execution mechanisms operate simultaneously or independently are met.
Drawings
Fig. 1 is a hydraulic schematic diagram of a preferred embodiment of the present invention.
Fig. 2 is a hydraulic schematic diagram of an open load sensing control oil inlet valve according to a preferred embodiment of the present invention.
In the figure: 1. an oil drain valve; 2. an oil tank; 3. an oil absorption filter; 4. an air cleaner; 5. An oil pump; 6. a first check valve; 7. a second one-way valve; 8. a first high pressure filter; 9. a second high pressure filter; 10. a first pressure transmitter; 11. a first pressure gauge; 12. a second pressure transmitter; 13. a second pressure gauge; 14. a first open load sensing control oil inlet valve; 15. A first manual and electric control proportional load sensing control valve; 16. a third pressure transmitter; 17. a bag breaker motor; 18. a second manual and electric control proportional load sensing control valve; 19. a bounce screen motor; 20. a third manual and electric control proportional load induction control valve; 21. an air separation motor; 22. a fourth manual and electric control proportional load induction control valve; 23. a fourth pressure transmitter; 24. a hammer crusher motor; 25. a fifth manual and electric control proportional load sensing control valve; 26. a fifth pressure transmitter; 27. a screw conveyor motor; 28. a sixth manual and electric control proportional load sensing control valve; 29. a vortex metal sorting motor; 30. seventh manual and electric control proportional load sensing control valve; 31. a conveyor belt motor; 32. eighth manual and electric control proportional load sensing control valve; 33. A magnetic separation motor; 35. a second open type load induction control oil inlet valve; 36. a sixth pressure transmitter; 37. a first one-way sequence valve; 38. a cover plate oil cylinder; 39. an electromagnetic directional valve; 40. ninth manual and electric control proportional load sensing control valve; 41. a hook arm linkage oil cylinder; 42. a second one-way sequence valve; 43. a seventh pressure transmitter; 44. a one-way balancing valve; 45. a tenth manual and electric control proportional load sensing control valve; 46. a swing oil cylinder; 47. eleventh manual and electric control proportional load sensing control valve; 48. a first butt conveyor belt motor; 49. twelfth manual and electric control proportional load sensing control valve; 50. a second butt conveyor belt motor; 51. a cooler; 52. an oil return filter; 53. an oil return check valve; 54. a liquid level meter; 55. a main valve relief valve; 56. a pressure regulating valve; 57. a pilot oil source pressure reducing valve; 58. a pilot oil relief valve.
Detailed Description
The present invention will be further described with reference to the following examples, which are illustrative and not limiting.
As shown in fig. 1, a sorting control hydraulic system of an environmental protection device comprises an oil tank 2, an oil pump 5, twelve manual and electric control proportional load sensing control valves arranged in parallel, thirteen actuating mechanisms, a pressure transmitter, an open load sensing control oil inlet valve, and a PWM electric cabinet.
The oil tank 2 is provided with a liquid level meter 54 for detecting the oil level of the oil tank and an oil drain valve 1 for cleaning, and an air filter 4 is arranged on an air inlet of the oil tank; the oil pump 5 is connected with a power takeoff on an engine gearbox through a coupler, an oil inlet of the oil pump is connected to the oil absorption filter 3 in the oil tank 2 through a pipeline, and an oil outlet of the oil pump is sequentially connected with a one-way valve and a high-pressure filter through pipelines;
the twelve manual and electric control proportional load induction control valves arranged in parallel comprise a first manual and electric control proportional load induction control valve 15, a second manual and electric control proportional load induction control valve 18, a third manual and electric control proportional load induction control valve 20, a fourth manual and electric control proportional load induction control valve 22, a fifth manual and electric control proportional load induction control valve 25 and a sixth manual and electric control proportional load induction control valve 28, a seventh manual and electric control proportional load sensing control valve 30, an eighth manual and electric control proportional load sensing control valve 32, a ninth manual and electric control proportional load sensing control valve 40, a tenth manual and electric control proportional load sensing control valve 45, an eleventh manual and electric control proportional load sensing control valve 47 and a twelfth manual and electric control proportional load sensing control valve 49, wherein the oil inlets of the manual and electric control proportional load sensing control valves are connected with the oil outlet of the high-pressure filter;
the thirteen actuating mechanisms comprise a bag breaking machine motor 17, a bouncing sieve motor 19, a winnowing motor 21, a hammer breaking machine motor 24, a screw conveyor motor 27, a vortex metal sorting motor 29, a conveyor belt motor 31, a magnetic separation motor 33, a swing oil cylinder 46, a first butt-joint conveyor belt motor 48, a second butt-joint conveyor belt motor 50, a cover plate oil cylinder 38 and a hook arm linkage oil cylinder 41, wherein the bag breaking machine motor 17, the bouncing sieve motor 19, the winnowing motor 21, the hammer breaking machine motor 24, the screw conveyor motor 27, the vortex metal sorting motor 29, the conveyor belt motor 31, the magnetic separation motor 33, the swing oil cylinder 46, the first butt-joint conveyor belt motor 48 and the second butt-joint conveyor belt motor 50 are respectively provided with two hydraulic oil interfaces which are respectively connected with a first manual and electric control proportional load induction control valve 15, a second manual and electric control proportional load induction control valve 18, a third manual and electric control proportional load induction control valve 20, The oil outlets a and B of the fourth manual and electric control proportional load sensing control valve 22, the fifth manual and electric control proportional load sensing control valve 25, the sixth manual and electric control proportional load sensing control valve 28, the seventh manual and electric control proportional load sensing control valve 30, the eighth manual and electric control proportional load sensing control valve 32, the tenth manual and electric control proportional load sensing control valve 45, the eleventh manual and electric control proportional load sensing control valve 47 and the twelfth manual and electric control proportional load sensing control valve 49 are connected.
The rodless cavity of the cover plate oil cylinder 38 is sequentially communicated with oil outlets A of a one-way balance valve 44, an electromagnetic reversing valve 39 and a ninth manual and electric control proportional load induction control valve 40, and the rod cavity is sequentially communicated with oil outlets B of a first one-way sequence valve 37, an electromagnetic reversing valve 39 and a ninth manual and electric control proportional load induction control valve 40;
the rod cavity of the hook arm linkage oil cylinder 41 is respectively communicated with the control port of the one-way balance valve 44 and the oil outlet B of the ninth manual and electric control proportional load sensing control valve 40, and the rodless cavity of the hook arm linkage oil cylinder is sequentially communicated with the second one-way sequence valve 42, the one-way balance valve 44 and the oil outlet A of the ninth manual and electric control proportional load sensing control valve 40.
The pressure transmitter includes:
a third pressure transmitter 16 for detecting a hydraulic oil pressure value of the bag breaker motor 17;
the fourth pressure transmitter 23 is used for detecting the hydraulic oil pressure value of the hammer crusher motor 24;
a fifth pressure transmitter 26 for detecting a hydraulic oil pressure value of the screw conveyor motor 27;
a sixth pressure transmitter 36 for detecting a hydraulic oil pressure value of the rod cavity of the cover plate cylinder 38;
and the seventh pressure transmitter 43 is used for detecting the hydraulic oil pressure value of the rodless cavity of the hook arm linkage oil cylinder 41.
The open load induction control oil inlet valve is provided with an oil inlet, an oil return port and a control oil port, the oil inlet is connected with an oil outlet of the high-pressure filter, the oil return port is connected with the oil tank 2 through an oil return pipeline, and the control oil port is communicated with shuttle valve loops of the manual and electric control proportional load induction control valves, so that the open load induction control oil inlet valve adjusts the flow of hydraulic oil flowing into the oil inlet of each manual and electric control proportional load induction control valve according to the change of the load; an oil return one-way valve 53 and an oil return filter 52 are also arranged in parallel on an oil return pipeline connected with an oil return port of the open load induction control oil inlet valve.
The PWM electric control box is respectively in circuit connection with the manual and electric control proportional load induction control valve and each pressure transmitter and is used for controlling the corresponding manual and electric control proportional load induction control valve to act according to set parameters and the current pressure value of each pressure transmitter:
when the hydraulic oil pressure values detected by the third pressure transmitter 16, the fourth pressure transmitter 23 and the fifth pressure transmitter 26 reach a preset overload threshold value, the PWM electric cabinet outputs PWM signals to control corresponding manual and electric control proportional load sensing control valves to respectively supply oil according to opposite directions and set flow rates, so that the bag breaking machine motor 17, the hammer breaking machine motor 24 and the screw conveyor motor 27 rotate in opposite directions, the jamming phenomenon is eliminated, and the normal operation of the equipment is protected;
when the pressure value detected by the sixth pressure transmitter 36 or the seventh pressure transmitter 43 reaches a set threshold value, the PWM electric cabinet increases the output PWM signal, controls the corresponding manual and electric control proportional load sensing control valve to change the output flow, and drives the cover plate oil cylinder 38 and the hook arm linkage oil cylinder 41 to extend or retract at a set speed.
Specifically, as shown in fig. 2, the open load sensing-controlled oil feed valve includes a pressure regulating valve 56, a main valve relief valve 55, a pilot oil source pressure reducing valve 57, and a pilot oil relief valve 58.
The pressure regulating valve 56 is connected and arranged between an oil inlet and an oil outlet of the open load induction control oil inlet valve, and a spring cavity of the pressure regulating valve is communicated with a shuttle valve loop of the manual and electric control proportional load induction control valve; one end of the main valve overflow valve 55 is communicated with a shuttle valve loop of the manual and electric control proportional load induction control valve, and the other end is communicated with an oil return port of the open load induction control oil inlet valve; one end of the pilot oil source reducing valve 57 is communicated with an oil inlet of the open load induction control oil inlet valve, and the other end of the pilot oil source reducing valve is communicated with an oil return port of the open load induction control oil inlet valve; the pilot oil overflow valve 58 is connected and arranged between the pilot oil source reducing valve 57 and the oil return port of the open load induction control oil inlet valve.
The operating principle of the open load induction control oil inlet valve comprises: pressure oil of a pump source reaches a main action cavity of the pressure regulating valve 56 through an oil inlet, in addition, a shuttle valve loop Ls in the manual and electric control proportional load sensing control valve feeds back the working pressure of the working mechanism to act on a spring cavity of the pressure regulating valve 56, the combined action of the pressure of the shuttle valve loop Ls and the spring force balances the hydraulic pressure of the main action cavity of the pressure regulating valve 56, and then an oil return port T of the open type load sensing control oil inlet valve can be completely or partially closed, so that the output flow of the pump is ensured to be adaptive to the flow required by the working mechanism. The pressure of the shuttle valve loop Ls is zero when the pump is started, so that the oil pump 5 is started at low pressure, the starting process is stable and safe, and the starting pressure is mainly determined by the flow characteristic of the pressure regulating valve 56. When the operating mechanism is operating, the pressure of the pressure feedback load of the shuttle valve circuit Ls is also introduced to the main valve relief valve 55, and once the load pressure exceeds the set pressure of the main valve relief valve 55, the main valve relief valve 55 is opened to return a part of the pump flow directly to the tank 2. The pressure oil of the pump source is decompressed by the pilot oil source decompression valve 57 and flows to the proportional reversing valve in the subsequent manual and electric control proportional load induction control valve to control the movement of the corresponding valve core, and the pilot oil overflow valve 58 can prevent the hydraulic pressure after the decompression of the pilot oil source decompression valve 57 from being overloaded.
As preferred, in the utility model discloses another feasible embodiment, connect still be provided with hydraulic motor driven cooler 51 on the oil return pipeline of open load induction control inlet valve oil return opening, the oil-out of oil pump 5 still through the pipeline with hydraulic motor connects, hydraulic motor driven cooler 51 cools off the system oil return, and the cooler adopts air cooler or water cooler, and this embodiment adopts air cooler to guarantee that whole hydraulic system's oil temperature keeps invariable, and hydraulic motor driven cooler 51 is driven by hydraulic oil simultaneously to reduce the electric power demand on the special chassis of car.
Preferably, in the utility model discloses another feasible embodiment, still be provided with hydraulic motor driven cooler 51 on the oil return pipeline of connecting open load sensing control inlet valve oil return opening, oil pump 5 is the dual oil pump including two oil-outs, an oil-out of dual oil pump connects gradually check valve and high pressure cleaner through the pipeline, another oil-out pass through the pipeline with hydraulic motor driven cooler 51 is connected, and the cooler adopts air cooler or water cooler, and the air cooler is adopted to this embodiment. The embodiment can ensure that the oil temperature of the whole hydraulic system is kept constant, prevent the temperature of the system from being overhigh, reduce the power requirement on a special chassis of an automobile, and ensure the independence of oil supply of each part of the hydraulic system by adopting a mode that one oil outlet of a duplex oil pump supplies oil for the cooler 51 driven by a hydraulic motor independently, thereby avoiding mutual interference and improving the stability and reliability of the operation of the hydraulic system. The duplex oil pump is any one of a duplex gear pump, a duplex vane pump and a duplex plunger pump, and the duplex gear pump is adopted in the embodiment, so that the structure is simple, the cost is low, and the maintenance is convenient.
Preferably, in another possible embodiment of the present invention, a cooler 51 driven by a hydraulic motor is further disposed on the oil return pipeline connecting the oil return port of the open load sensing control oil inlet valve, the oil pump 5 is a triple oil pump including three oil outlets, in order to adapt to the triple oil pump, and control the simultaneous actions of the actuators to achieve the characteristics of mutual noninterference and smooth operation, the present embodiment is provided with a first open load sensing control oil inlet valve 14 and a second open load sensing control oil inlet valve 35, wherein the first oil outlet of the triple oil pump is connected in series with the first open load sensing control oil inlet valve 14, the first manual and electric control proportional load sensing control valve 15, the second manual and electric control proportional load sensing control valve 18, the third manual and electric control proportional load sensing control valve 20, the third electric control load sensing control valve 35, and the third electric control valve 9 are connected in series in sequence, Oil inlets of a fourth manual and electric control proportional load induction control valve 22, a fifth manual and electric control proportional load induction control valve 25, a sixth manual and electric control proportional load induction control valve 28, a seventh manual and electric control proportional load induction control valve 30 and an eighth manual and electric control proportional load induction control valve 32 are connected; a second oil outlet of the triple oil pump is respectively connected with oil inlets of a second open type load induction control oil inlet valve 35, a ninth manual and electric control proportional load induction control valve 40, a tenth manual and electric control proportional load induction control valve 45, an eleventh manual and electric control proportional load induction control valve 47 and a twelfth manual and electric control proportional load induction control valve 49 through a second one-way valve 7 and a first high-pressure filter 8 which are sequentially connected in series;
and a third oil outlet of the triple oil pump is connected with a hydraulic motor for driving the cooler 51 through a pipeline, the cooler 51 adopts an air cooler or a water cooler, and the air cooler is adopted in the embodiment. Except that the oil temperature of the whole hydraulic system can be kept constant, the overhigh system temperature is prevented, the electric power requirement on a special chassis of the automobile is reduced, each actuating mechanism and each manual and electric control proportional load induction control valve are divided into two groups to supply oil respectively, and the independence of the oil supply of each part of the hydraulic system is further ensured by the mode of independently supplying oil to the cooler 51 driven by the hydraulic motor, so that the mutual interference is avoided, and the stability and the reliability of the operation of the hydraulic system are improved.
The triple oil pump is any one of a triple gear pump, a triple vane pump and a triple plunger pump, and the triple gear pump is adopted in the embodiment, so that the structure is simple, the cost is low, and the maintenance is convenient.
In addition, for the convenience of observing system oil pressure and hydraulic oil quality, the oil outlet pipeline of first high pressure filter 8 is other respectively and has been connect second pressure transmitter 12, second manometer 13 the oil outlet pipeline of second high pressure filter 9 is other respectively and has been connect first pressure transmitter 10, first manometer 11, the pressure of first pressure transmitter 10 and second pressure transmitter 12 passes through control program and shows on the touch-sensitive screen, the output pressure of oil pump 5 can be observed at any time to first manometer 11 and second manometer 13, the last pressure switch of first high pressure filter 8 and second high pressure filter 9 can detect the pollution of hydraulic oil at any time, reminds the operator whether the filter core of filter needs to be changed.
Preferably, in the utility model discloses another feasible embodiment, all manual and automatically controlled proportional load sensing control valve oil-out A and oil-out B all connect the buffering oil supplementing valve, the buffering oil supplementing valve still is linked together with the oil return opening of open load sensing control inlet valve, the buffering oil supplementing valve can carry out the negative pressure oil supplementing from the oil return opening of open load sensing control inlet valve to each actuating mechanism that corresponds when needs, guarantees the oil mass demand.
In order to keep the compactness of the hydraulic system, each manual and electric control proportional load induction control valve and each open type load induction control oil inlet valve are connected into a whole through a pull rod and a nut.
The utility model discloses above-mentioned embodiment's working process includes:
1. initially, the bag breaker motor 17, the bouncing screen motor 19, the winnowing motor 21, the hammer breaker motor 24, the screw conveyor motor 27, the eddy-current metal sorting motor 29, the conveyor belt motor 31, the magnetic separation motor 33, the first butt conveyor belt motor 48 and the second butt conveyor belt motor 50 are in stop positions, and pistons of the cover plate oil cylinder 38, the hook arm linkage oil cylinder 41 and the swing oil cylinder 46 are in contraction positions;
2. starting an engine on a special chassis of the automobile, driving a gearbox by the engine, and then driving a power takeoff attached to the gearbox;
3. the power takeoff drives the front duplex working pump of the triple gear pump through the coupler, the front duplex working pump is started at low pressure due to the action of the open load induction control oil inlet valve, and hydraulic oil directly returns to the oil tank 2 through the corresponding one-way valve, the high-pressure filter, the oil return port of the open load induction control oil inlet valve, the cooler 51 driven by the hydraulic motor and the oil return filter 52. Meanwhile, a third pump on the triple gear pump outputs hydraulic oil to start a cooler 51 driven by a hydraulic motor to start working, so that the heated hydraulic oil is cooled;
4. when each executing mechanism works, the corresponding PWM signals (or the opening of the control valve rod during manual operation) are output by the PWM electric control box to control the strokes of the main valve cores of the first manual and electric control proportional load induction control valve 15, the second manual and electric control proportional load induction control valve 18, the third manual and electric control proportional load induction control valve 20, the fourth manual and electric control proportional load induction control valve 22, the fifth manual and electric control proportional load induction control valve 25, the sixth manual and electric control proportional load induction control valve 28, the seventh manual and electric control proportional load induction control valve 30, the eighth manual and electric control proportional load induction control valve 32, the eleventh manual and electric control proportional load induction control valve 47 and the twelfth manual and electric control proportional load induction control valve 49, and the system hydraulic oil controls the bag breaking motor 17, the bag breaking motor and the bag breaking motor through the corresponding manual and electric control proportional load induction control valves, The bouncing screen motor 19, the winnowing motor 21, the hammer crusher motor 24, the screw conveyor motor 27, the eddy current metal sorting motor 29, the conveying belt motor 31 and the magnetic separation motor 33 start to work simultaneously, the whole machine starts to perform screening work, and the bag crusher motor controls the operation of a bag crusher; the operation of the bouncing screen is controlled by the bouncing screen motor; the winnowing motor controls the operation of the magnetic separator and the nonferrous metal winnowing; the motor of the hammer crusher controls the crushing of the solid waste; the motor of the screw conveyor controls the conveying of the bounce screen; the eddy current metal sorting motor controls the sorting of nonferrous metals; the conveying belt motor controls the conveying of the sorted fixed waste; the magnetic separation motor controls the separation of magnetic substances; after the swing oil cylinder controls the hook arm to turn over in place, the garbage in the garbage can is completely poured into the sorting bin; the first butt-joint conveying belt motor conveys out the garbage stored in the sorting bin; the second butt-joint conveying belt motor conveys out the garbage stored in the sorting bin;
5. then, the corresponding PWM signal (or the opening of the control valve rod during manual operation) is output by the PWM electric control box to control the stroke of the main valve core of the ninth manual and electric control proportional load induction control valve 40, and meanwhile, the electromagnetic directional valve 39 is electrified to be positioned at the right position. The hydraulic oil of the system passes through the one-way balance valve 44 and the electromagnetic directional valve 39, and firstly, the cover plate oil cylinder 38 is actuated to open the cover plate at the top of the screening. At the moment, PWM outputs a small signal to control output of small flow so as to extend the cover plate oil cylinder 38, when the cover plate oil cylinder 38 extends to the right position, the load pressure gradually rises, when the pressure rises to the starting pressure of the second one-way sequence valve 42, the seventh pressure transmitter 43 starts to detect the pressure of the rodless cavity of the hook arm linkage oil cylinder 41, the cover plate oil cylinder 38 is continuously kept at the extending position, hydraulic oil passes through the second one-way sequence valve 42 to the hook arm linkage oil cylinder 41, so that the piston rod of the hook arm linkage oil cylinder 41 extends out, the seventh pressure transmitter 43 detects that the pressure of the system gradually rises, the PWM electric cabinet increases to output PWM signals, the stroke of the main valve core of the ninth manual and electric control proportional load sensing control valve 40 is increased, the output flow of the main valve core is increased, the piston rod of the hook arm linkage oil cylinder 41 is ensured to extend out at the designed speed, and meanwhile, the garbage can is driven to rise to the top of the;
6. when the piston rod of the hook arm linkage oil cylinder 41 extends to the right position, the working button of the swing oil cylinder 46 is pressed, the PWM electric cabinet outputs a corresponding PWM signal (or controls the opening of the valve rod during manual operation) to control the stroke of the main valve core of the tenth manual and electric control proportional load sensing control valve 45, the swing oil cylinder 46 starts to work, and the garbage in the garbage can is poured into the hopper of the screening device in a shaking manner. And shaking for several times until the garbage in the garbage can is completely poured out. After the garbage is poured, the swing oil cylinder 46 is reset to be in a contraction position.
7. Then the retraction button of the hook arm linkage oil cylinder 41 is pressed, the stroke of the main valve core of the ninth manual and electric control proportional load induction control valve 40 is controlled by a large signal through the output of a PWM electric control box (or the opening of a control valve rod during manual operation), and the electromagnetic directional valve 39 is electrified to be in the left position. The sixth pressure transmitter 36 detects the pressure of the rod cavity of the hook arm linkage cylinder 41, the system hydraulic oil sequentially flows through the rod cavity, the rodless cavity, the second one-way sequence valve 42 and the one-way balance valve 44 of the hook arm linkage cylinder 41, the system hydraulic oil firstly enables the hook arm linkage cylinder 41 to do retraction action, thereby outputting large flow to enable the hook arm linkage cylinder 41 to retract at a set speed, when the hook arm linkage cylinder 41 retracts to the right position, the load pressure gradually rises, when the pressure rises to the starting pressure of the first one-way sequence valve 37, the hook arm linkage cylinder 41 is continuously kept at the retraction position, the hydraulic oil sequentially passes through the electromagnetic directional valve 39, the first one-way sequence valve 37 to the rod cavity, the rodless cavity and the electromagnetic directional valve 39 of the cover plate cylinder 38, the piston rod of the cover plate cylinder 38 retracts, the sixth pressure transmitter 36 detects the pressure, thereby enabling the PWM signal controller to reduce the control signal, the stroke of the main valve core of the ninth manual and electric control proportional load sensing control valve 40 is reduced, so that the output flow of the main valve core is reduced, and the piston rod of the cover plate oil cylinder 38 retracts at the designed speed.
8. When the environment-friendly equipment encounters an obstacle and the hook arm linkage oil cylinder 41 needs to be lifted, the electromagnetic directional valve 39 is in a neutral state, the PWM electric control box outputs a corresponding PWM signal (or controls the opening degree of a valve rod during manual operation) to control the stroke of a main valve core of the ninth manual and electric control proportional load sensing control valve 40, system hydraulic oil enters a rodless cavity of the hook arm linkage oil cylinder 41 through an oil outlet A of the ninth manual and electric control proportional load sensing control valve 40, the first one-way sequence valve 37, the one-way balance valve 44 and an oil outlet B of the ninth manual and electric control proportional load sensing control valve 40, and enters a rod cavity of the hook arm linkage oil cylinder 41. The system controls only the hook arm linkage cylinder 41 to extend at a set flow rate. The hook arm linkage cylinder 41 stops extending when the operator observes that the hook arm linkage cylinder 41 extends to the point where the eco-equipment can clear the obstacle, stopping signaling the PWM.
9. When the environmental protection equipment passes through the obstacle and the hook arm linkage oil cylinder 41 needs to descend, the electromagnetic directional valve 39 is in a middle state, the PWM electric control box outputs a corresponding PWM signal (or controls the opening degree of a valve rod during manual operation) to control the travel of the valve core of the main valve of the ninth manual and electric control proportional load sensing control valve 40 in the opposite direction, the system hydraulic oil enters the rod cavity of the hook arm linkage oil cylinder 41 through the oil outlet B of the ninth manual and electric control proportional load sensing control valve 40, and the system retracts by controlling the hook arm linkage oil cylinder 41 according to the set flow. When the operator observes that the hook arm linkage cylinder 41 retracts to be parallel to the road surface, the PWM signal is stopped, and the hook arm linkage cylinder 41 stops retracting.
The utility model discloses in the above-mentioned embodiment, through open load induction control inlet valve, manual and automatically controlled proportional load induction control valve and PWM signal's joint use, guarantee manual and automatically controlled proportional load induction control valve output flow's stability, it is irrelevant with the load. Through the use of open load induction control admission valve and gear pump, make the gear pump start when the low pressure, guarantee to start the gear pump and not carry. The load sensing proportional multi-way valve is controlled by the PWM signal, so that the flow of the outlet of the manual and electric control proportional load sensing control valve can be steplessly changed, and the stepless speed change function of the system is realized.
Based on the above characteristics, the embodiment of the utility model controls each executing mechanism (bag breaking machine motor 17, bouncing screen motor 19, winnowing motor 21, hammer breaking machine motor 24, screw conveyor motor 27, eddy current metal sorting motor 29, conveying belt motor 31, magnetic separation motor 33, cover plate oil cylinder 38, hook arm linkage oil cylinder 41, swing oil cylinder 46, first butt-joint conveying belt motor 48, second butt-joint conveying belt motor 50, etc.) through a plurality of manual and proportional control load induction control hydraulic systems, can meet the use requirements of each executing mechanism of the environmental protection equipment for simultaneous and stable operation,
the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a separation control hydraulic system of environmental protection equipment which characterized in that includes:
the oil pump (5) is connected with a power takeoff on an engine gearbox through a coupler, an oil inlet of the oil pump is connected to the oil tank (2) through a pipeline, and an oil outlet of the oil pump is connected with a high-pressure filter through a pipeline;
the manual and electric control proportional load induction control valves are arranged in parallel, and oil inlets of the manual and electric control proportional load induction control valves are connected with oil outlets of the high-pressure filter;
the actuating mechanisms are respectively connected with the oil outlets A and B of the corresponding manual and electric control proportional load sensing control valves;
the pressure transmitter is used for detecting the hydraulic oil pressure value of the corresponding actuating mechanism;
the open load induction control oil inlet valve is provided with an oil inlet, an oil return port and a control oil port, the oil inlet is connected with an oil outlet of the high-pressure filter, the oil return port is connected with the oil tank (2) through an oil return pipeline, and the control oil port is communicated with shuttle valve loops of the manual and electric control proportional load induction control valves, so that the open load induction control oil inlet valve adjusts the flow of hydraulic oil flowing into the oil inlet of each manual and electric control proportional load induction control valve according to the change of the load;
and the PWM electric control box is respectively in circuit connection with each manual and electric control proportional load induction control valve and the pressure transmitter and is used for controlling the corresponding manual and electric control proportional load induction control valves to act according to the set parameters and the current pressure value of each pressure transmitter.
2. The sorting control hydraulic system of an eco-friendly apparatus according to claim 1, characterized in that: open load induction control inlet valve includes:
the pressure regulating valve (56) is connected and arranged between an oil inlet and an oil outlet of the open load induction control oil inlet valve, and a spring cavity of the pressure regulating valve is communicated with a shuttle valve loop of the manual and electric control proportional load induction control valve;
one end of the main valve overflow valve (55) is communicated with a shuttle valve loop of the manual and electric control proportional load induction control valve, and the other end of the main valve overflow valve (55) is communicated with an oil return port of the open load induction control oil inlet valve;
a pilot oil source reducing valve (57), one end of which is communicated with an oil inlet of the open load induction control oil inlet valve, and the other end of which is communicated with an oil return port of the open load induction control oil inlet valve;
and the pilot oil overflow valve (58) is connected and arranged between the pilot oil source reducing valve (57) and an oil return port of the open type load induction control oil inlet valve.
3. The sorting control hydraulic system of an eco-friendly apparatus according to claim 1, characterized in that: the actuator includes:
the device comprises a bag breaking machine motor (17), a bouncing screen motor (19), a winnowing motor (21), a hammer breaking machine motor (24), a spiral conveyor motor (27), a vortex metal sorting motor (29), a conveying belt motor (31), a magnetic separation motor (33), a swing oil cylinder (46), a first butt-joint conveying belt motor (48) and a second butt-joint conveying belt motor (50), wherein the first butt-joint conveying belt motor and the second butt-joint conveying belt motor are respectively provided with two hydraulic oil interfaces and are respectively connected with an oil outlet A and an oil outlet B of a corresponding manual and electric control proportional load induction control valve;
a cover plate oil cylinder (38), the rodless cavity of which is communicated with the oil outlets A of the one-way balance valve (44), the electromagnetic directional valve (39) and the corresponding manual and electric control proportional load induction control valves in sequence, and the rod cavity of which is communicated with the oil outlets B of the first one-way sequence valve (37), the electromagnetic directional valve (39) and the corresponding manual and electric control proportional load induction control valves in sequence;
and a rod cavity of the hook arm linkage oil cylinder (41) is respectively communicated with a control port of the one-way balance valve (44) and an oil outlet B of the corresponding manual and electric control proportional load sensing control valve, and a rodless cavity of the hook arm linkage oil cylinder is sequentially communicated with a second one-way sequence valve (42), the one-way balance valve (44) and an oil outlet A of the corresponding manual and electric control proportional load sensing control valve.
4. The sorting control hydraulic system of an eco-friendly apparatus according to claim 3, characterized in that: the pressure transmitter includes:
a third pressure transmitter (16) for detecting the hydraulic oil pressure value of the bag breaker motor (17);
the fourth pressure transmitter (23) is used for detecting the hydraulic oil pressure value of the hammer crusher motor (24);
a fifth pressure transmitter (26) for detecting a hydraulic oil pressure value of the screw conveyor motor (27);
the sixth pressure transmitter (36) is used for detecting the pressure value of the hydraulic oil in the rod cavity of the cover plate oil cylinder (38);
and the seventh pressure transmitter (43) is used for detecting the hydraulic oil pressure value of the rodless cavity of the hook arm linkage oil cylinder (41).
5. The sorting control hydraulic system of an eco-friendly apparatus according to claim 4, characterized in that: the PWM electric cabinet is specifically used for:
when the hydraulic oil pressure values detected by the third pressure transmitter (16), the fourth pressure transmitter (23) and the fifth pressure transmitter (26) reach a preset overload threshold value, outputting PWM signals to control corresponding manual and electric control proportional load induction control valves to respectively supply oil according to opposite directions and set flow rates, so that the bag breaking machine motor (17), the hammer breaking machine motor (24) and the screw conveyor motor (27) rotate in opposite directions;
and when the pressure value detected by the sixth pressure transmitter (36) or the seventh pressure transmitter (43) reaches a set threshold value, increasing the output PWM signal, controlling the corresponding manual and electric control proportional load sensing control valve to change the output flow, and driving the cover plate oil cylinder (38) and the hook arm linkage oil cylinder (41) to extend or retract according to a set speed.
6. The sorting control hydraulic system of an eco-friendly apparatus according to claim 1, characterized in that: and a cooler (51) driven by a hydraulic motor is further arranged on an oil return pipeline connected with an oil return port of the open load induction control oil inlet valve, and an oil outlet of the oil pump (5) is further connected with the hydraulic motor through a pipeline.
7. The sorting control hydraulic system of an eco-friendly apparatus according to claim 1, characterized in that: connect still be provided with hydraulic motor driven cooler (51) on the oil return pipeline of open load induction control inlet valve oil return opening, oil pump (5) are for the oil pump that ally oneself with more including a plurality of oil-outs, one of them oil-out that ally oneself with the oil pump passes through the pipeline and is connected with this hydraulic motor more, and all the other oil-outs are connected with the open load induction control inlet valve oil inlet that corresponds through high pressure filter respectively.
8. The sorting control hydraulic system of an eco-friendly apparatus according to claim 7, characterized in that: the multiplex oil pump is any one of a multiplex gear pump, a multiplex vane pump and a multiplex plunger pump.
9. The sorting control hydraulic system of an eco-friendly apparatus according to claim 1, characterized in that: the manual and electric control proportional load induction control valve and the open type load induction control oil inlet valve are connected into a whole through a connecting piece.
10. The sorting control hydraulic system of an eco-friendly apparatus according to claim 1, characterized in that: the oil tank (2) is provided with a liquid level meter (54) for detecting the oil level of the oil tank and an oil drain valve (1) for cleaning, and an air filter (4) is arranged on an air inlet of the oil tank; an oil return one-way valve (53) and an oil return filter (52) are also arranged in parallel on an oil return pipeline connected with an oil return port of the open load induction control oil inlet valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922275522.3U CN211314691U (en) | 2019-12-18 | 2019-12-18 | Sorting control hydraulic system of environmental protection equipment |
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| CN201922275522.3U CN211314691U (en) | 2019-12-18 | 2019-12-18 | Sorting control hydraulic system of environmental protection equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628223A (en) * | 2021-01-08 | 2021-04-09 | 江苏指南润滑液压科技有限公司 | Intelligent grate cooler hydraulic station |
| CN113803309A (en) * | 2021-09-13 | 2021-12-17 | 徐州徐工随车起重机有限公司 | Energy-saving type high-altitude operation vehicle getting-on and getting-off interlocking system and control method thereof |
-
2019
- 2019-12-18 CN CN201922275522.3U patent/CN211314691U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628223A (en) * | 2021-01-08 | 2021-04-09 | 江苏指南润滑液压科技有限公司 | Intelligent grate cooler hydraulic station |
| CN113803309A (en) * | 2021-09-13 | 2021-12-17 | 徐州徐工随车起重机有限公司 | Energy-saving type high-altitude operation vehicle getting-on and getting-off interlocking system and control method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230310 Address after: No. 12, Shuangqiao Village, Zhentou Town, Liuyang City, Changsha, Hunan 410000 Patentee after: HUNAN ZHISHUI ENVIRONMENTAL EQUIPMENT Co.,Ltd. Address before: 410000 room 304, building 6, international enterprise center, 188 Huanbao Middle Road, Yuhua District, Changsha City, Hunan Province Patentee before: Liao Wenbin |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hunan xinshengli non woven fabric Co.,Ltd. Assignor: HUNAN ZHISHUI ENVIRONMENTAL EQUIPMENT Co.,Ltd. Contract record no.: X2023980047288 Denomination of utility model: A sorting control hydraulic system for environmental protection equipment Granted publication date: 20200821 License type: Common License Record date: 20231117 |