CN105365254A - Servo energy-saving system for hydraulic waste paper packaging machine - Google Patents
Servo energy-saving system for hydraulic waste paper packaging machine Download PDFInfo
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- CN105365254A CN105365254A CN201510912436.2A CN201510912436A CN105365254A CN 105365254 A CN105365254 A CN 105365254A CN 201510912436 A CN201510912436 A CN 201510912436A CN 105365254 A CN105365254 A CN 105365254A
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- oil
- pump
- waste paper
- servo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
- B30B9/3003—Details
- B30B9/3007—Control arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
- B30B9/3057—Fluid-driven presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a servo energy-saving system for a hydraulic waste paper packaging machine. The servo energy-saving system comprises an oil tank, an oil pump, a reversing valve and an oil cylinder, wherein the oil tank is connected with an oil inlet end of the oil pump through an oil tube; and the reversing valve is provided with an air inlet port, an oil return port, a first oil outlet port and a second oil outlet port, the air inlet port is connected with an oil transmission end of the oil pump through an oil tube, the oil return port is connected with the oil tank through an oil tube, the first oil outlet port is connected with a rodless cavity of the oil cylinder through an oil tube, and the second oil outlet port is connected with a rod cavity of the oil cylinder through an oil tube. The servo energy-saving system is characterized in that the oil pump is connected with a servo motor through a coupling, the servo motor is connected with a servo driver through a conductive wire, the servo driver is connected with a pressure sensor and a PLC through a conductive wire respectively, and an induction end of the pressure sensor is communicated with the section of oil tube between the oil pump and the reversing valve through an oil tube. Through controlling the hydraulic waste paper packaging machine to work by virtue of the servo energy-saving system, the running energy consumption of equipment can be reduced, the replacement periods of hydraulic oil and a sealing element can be prolonged, noise pollution can be reduced, and the service life of the equipment can be prolonged.
Description
Technical field
The present invention relates to a kind of waste paper retracting device, is the energy-saving servo system on hydraulic pressure waste paper baler specifically.
Background technology
As everyone knows, reclaim in industry at waste and old material, hydraulic pressure waste paper baler is a kind of common equipment.Hydraulic pressure waste paper baler utilizes hydraulic system propelling movement pressure head and hopper parts that originally loose waste paper is compressed compacting, thus realize the object reducing cost of transportation and reduction residual storage.
The hydraulic system of traditional waste paper baler comprises fuel tank, oil pump, reversal valve and oil cylinder, and fuel tank is connected with the oil inlet end of oil pump by oil pipe, and oil pump is connected with threephase asynchronous machine by shaft coupling, and threephase asynchronous machine is connected with electromagnetic contactor by wire; Reversal valve has oil-in, oil return opening, the first oil-out and the second oil-out, oil-in is connected with the oil transportation end of oil pump by oil pipe, and this section of oil pipe has overflow valve, oil return opening is connected with fuel tank by oil pipe, first oil-out is connected with the rodless cavity of oil cylinder by oil pipe, and the second oil-out is connected with the rod chamber of oil cylinder by oil pipe; Described reversal valve is connected with PLC by wire.This hydraulic system utilizes threephase asynchronous machine constant speed to rotate, make oil pump can keep quantitative from fuel tank pump oil to oil cylinder, recycling PLC controls the turnover oil that reversal valve switches oil cylinder rodless cavity, rod chamber, realize the reciprocating motion of oil cylinder piston, thus drive the pressure head of waste paper baler and hopper parts to compress waste paper.
The shortcoming of above-mentioned waste paper baler have following some:
1. threephase asynchronous machine constant speed is rotated, oil pump constant displacement pump oil, no matter whether pressure head and hopper parts change applied pressure needed for waste paper to be compressed, the duty of motor and oil pump remains constant, energy consumption remains constant, therefore its energy consumption cost processing waste paper per ton used is higher, and the operating efficiency of oil pump is lower;
2. oil pump is in the state of constant displacement pump oil all the time, overflow valve works without cessation, make the hydraulic oil oil temperature in hydraulic system higher, oil property declines very fast, seal premature aging, the replacement cycle of hydraulic oil and seal is shorter, also needs to be equipped with cooling system in addition and runs well with guarantee equipment;
3. duty is constant makes equipment operation be in the larger state of noise all the time, not only pollutes the environment, also can affect the service life of equipment.
Waste paper baler to the recycling of waste paper industry, transport and reduce costs and play critical effect, particularly European and American areas country more and more payes attention to the Study and Development of waste paper baler both at home and abroad.Along with the continuous increase of the domestic waste paper rate of recovery, traditional waste paper baler can not meet the demand of industry high speed development, also have stimulated waste paper packing station, various places and constantly promotes the demand of automation, intelligentized waste paper baler.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of hydraulic pressure waste paper baler energy-saving servo system, utilize this energy-saving servo Systematical control hydraulic pressure waste paper baler work, equipment operation energy consumption can be reduced, extend the replacement cycle of hydraulic oil and seal, reduce noise pollution, the service life of extension device.
For solving the problem, take following technical scheme:
Hydraulic pressure waste paper baler energy-saving servo system of the present invention comprises fuel tank, oil pump, reversal valve and oil cylinder, and described fuel tank is connected with the oil inlet end of oil pump by oil pipe.Described reversal valve has oil-in, oil return opening, the first oil-out and the second oil-out, oil-in is connected with the oil transportation end of described oil pump by oil pipe, oil return opening is connected with described fuel tank by oil pipe, first oil-out is connected by the rodless cavity of oil pipe with described oil cylinder, and the second oil-out is connected by the rod chamber of oil pipe with described oil cylinder.Be characterized in that described oil pump is connected with servomotor by shaft coupling, servomotor is connected with servo-driver by wire, servo-driver is connected with pressure sensor and PLC respectively by wire, and the induction end of pressure sensor is connected with that section of oil pipe between oil pump with reversal valve by oil pipe.
Further improvement of the present invention scheme is parallel with safety valve by oil pipe between the oil inlet end of described oil pump and oil transportation end.Under pressure control state, this system carries out draining by safety valve, and the oil pressure in oil circuit is remained unchanged.
Wherein, described oil pump is crescent gear pump.
Take such scheme, have the following advantages:
Because hydraulic pressure waste paper baler energy-saving servo system of the present invention comprises fuel tank, oil pump, reversal valve and oil cylinder, described fuel tank is connected with the oil inlet end of oil pump by oil pipe; Described reversal valve has oil-in, oil return opening, the first oil-out and the second oil-out, oil-in is connected with the oil transportation end of described oil pump by oil pipe, oil return opening is connected with described fuel tank by oil pipe, first oil-out is connected by the rodless cavity of oil pipe with described oil cylinder, and the second oil-out is connected by the rod chamber of oil pipe with described oil cylinder; It is characterized in that described oil pump is connected with servomotor by shaft coupling, servomotor is connected with servo-driver by wire, servo-driver is connected with pressure sensor and PLC respectively by wire, and the induction end of pressure sensor is connected with that section of oil pipe between oil pump with reversal valve by oil pipe.Therefore, when oil pump is to the rodless cavity pump oil of oil cylinder, when the waste paper baler pressure head that promotion is connected with oil cylinder piston cylinder and hopper component compresses waste paper, pressure sensor can respond to the oil pressure in oil pipe, and induced signal is sent to servo-driver, servo-driver can control servomotor and change rotating speed in real time.When oil pressure is less than setting pressure, servo-driver controls servomotor constant speed and rotates, oil pump constant displacement pump oil; When oil pressure is about to reach or reached setting pressure, servo-driver controls servomotor and is reduced to minimum speed or stopping, ensureing that under the prerequisite that oil pressure is constant, oil pump only provides the flow of the pump oil needed for leakage or pressurize to system.It can thus be appreciated that this energy-saving servo system can reduce waste paper baler process waste paper per ton energy consumption cost used greatly, improve the operating efficiency of oil pump.Simultaneously, pressure sensor, servo-driver and servomotor is adopted to carry out the pump oil mass of real-time control oil pump, without the need to using overflow valve, the oil temperature of hydraulic oil in system can be reduced, slow down the decline of oil property, increasing the service life of seal, extending the replacement cycle, more without the need to additionally installing cooling system.In addition, the pump oil mass of adjustment oil pump can reduce noise pollution when equipment runs in real time, the service life of extension device.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of hydraulic pressure waste paper baler energy-saving servo system of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, hydraulic pressure waste paper baler energy-saving servo system of the present invention comprises fuel tank 1, oil pump 2, reversal valve 7 and oil cylinder 8, and described fuel tank 1 is connected by the oil inlet end of oil pipe with oil pump 2.Described reversal valve 7 has oil inlet P, oil return inlet T, the first oil-out A and the second oil-out B, oil inlet P is connected by the oil transportation end of oil pipe with described oil pump 2, oil return inlet T is connected with described fuel tank 1 by oil pipe, first oil-out A is connected by the rodless cavity of oil pipe with described oil cylinder 8, and the second oil-out B is connected by the rod chamber of oil pipe with described oil cylinder 8.Described oil pump 2 is connected with servomotor 3 by shaft coupling, servomotor 3 is connected with servo-driver 4 by wire, servo-driver 4 is connected with pressure sensor 6 and PLC5 respectively by wire, and the induction end of pressure sensor 6 is connected with that section of oil pipe between oil pump 2 with reversal valve 7 by oil pipe.
This energy-saving servo system adopts pressure closed loop to control.Under pressure closed loop state, servo-driver 4 combines the force value and flow value that have preset according to the feedback of pressure sensor 6, carry out the control of flow and pressure.Such as: when the oil pressure that pressure sensor 6 monitors is less than the pressure of setting, servo-driver 4 controls servomotor 3 constant speed according to the constant signal that PLC5 inputs and rotates, and the pump oil mass of oil pump 2 remains unchanged; When the oil pressure that pressure sensor 6 monitors is about to reach or reached setting value, servo-driver 4 controls servomotor 3 according to the signal that pressure sensor 6 inputs and is reduced to minimum speed or stopping, ensureing that under the prerequisite that oil pressure is constant, oil pump 2 only provides the flow needed for leakage or pressurize to system.
Hydraulic pressure waste paper baler energy-saving servo system of the present invention according to the requirement of load, by the uninterrupted of the automatic control pump oil indirectly of pressure sensor 6, can adapt to the height of oil pressure in oil circuit, does not waste, do not flog a dead horse, so power saving effect clearly; The closed loop that it adopts controls, and without high pressure throttling energy loss, power and energy saving benefit can reach 50%-70%.The electricity charge 7 yuan calculating is added up to by former baling press process one ton of waste paper power consumption 6 degree, after using this energy-saving servo system, process near 1.5 degree of one ton of waste paper power consumption and add up to the electricity charge 2 yuan, by the 100 tons of calculating of output every day, every day, direct economic benefit increased by 500 yuan, and power consumption reduces by 450 degree.For Shanghai City, it is a few kiloton that official in 2008 announces daily output waste paper amount, if market all uses this energy-saving servo Systematical control waste paper baler operation, its economic benefit and effects of energy saving and emission reduction self-evident.In order to make this energy-saving servo system can better work under pressure closed loop state of a control, oil pipe safety valve 9 in parallel can be passed through between the oil inlet end of oil pump 2 with oil transportation end, can draining be carried out by safety valve 9, guarantee that the oil pressure in oil circuit remains unchanged.
Traditional oil pump 2 rotating speed is generally 1450r/min, and noise when it runs is more than 100 decibels.In order to reduce noise when equipment runs further, the oil pump 2 of this energy-saving servo system can adopt crescent gear pump, and its noise when 2200r/min is only about 80 decibels.
Hydraulic system for controlling waste paper baler in background technology must arrange overflow valve in oil circuit, oil pressure is close or when reaching rated value, overflow valve can produce a large amount of heats, the oil temperature of oil circuit is raised rapidly.And hydraulic pressure waste paper baler energy-saving servo system of the present invention, do not need to arrange overflow valve in its oil circuit, there is not the node that oil temperature is raised in theory.
Claims (3)
1. hydraulic pressure waste paper baler energy-saving servo system, comprises fuel tank (1), oil pump (2), reversal valve (7) and oil cylinder (8), and described fuel tank (1) is connected by the oil inlet end of oil pipe with oil pump (2); Described reversal valve (7) has oil-in (P), oil return opening (T), the first oil-out (A) and the second oil-out (B), oil-in (P) is connected by the oil transportation end of oil pipe with described oil pump (2), oil return opening (T) is connected with described fuel tank (1) by oil pipe, first oil-out (A) is connected by the rodless cavity of oil pipe with described oil cylinder (8), and the second oil-out (B) is connected by the rod chamber of oil pipe with described oil cylinder (8); It is characterized in that described oil pump (2) is connected with servomotor (3) by shaft coupling, servomotor (3) is connected with servo-driver (4) by wire, servo-driver (4) is connected with pressure sensor (6) and PLC(5) respectively by wire, and the induction end of pressure sensor (6) is connected with that section of oil pipe between oil pump (2) with reversal valve (7) by oil pipe.
2. hydraulic pressure waste paper baler energy-saving servo system as claimed in claim 1, is characterized in that being parallel with safety valve (9) by oil pipe between the oil inlet end of described oil pump (2) and oil transportation end.
3. hydraulic pressure waste paper baler energy-saving servo system as claimed in claim 1 or 2, is characterized in that described oil pump (2) is crescent gear pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912436.2A CN105365254A (en) | 2015-12-11 | 2015-12-11 | Servo energy-saving system for hydraulic waste paper packaging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912436.2A CN105365254A (en) | 2015-12-11 | 2015-12-11 | Servo energy-saving system for hydraulic waste paper packaging machine |
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| Publication Number | Publication Date |
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| CN105365254A true CN105365254A (en) | 2016-03-02 |
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| CN201510912436.2A Pending CN105365254A (en) | 2015-12-11 | 2015-12-11 | Servo energy-saving system for hydraulic waste paper packaging machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372831A (en) * | 2018-11-09 | 2019-02-22 | 无锡领胜工业自动化有限公司 | A kind of hydraulic pressure unit for Automatic Plastic pipe welder |
-
2015
- 2015-12-11 CN CN201510912436.2A patent/CN105365254A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372831A (en) * | 2018-11-09 | 2019-02-22 | 无锡领胜工业自动化有限公司 | A kind of hydraulic pressure unit for Automatic Plastic pipe welder |
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Application publication date: 20160302 |
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