CN1807904A - Dual-pump driven hydraulic station for horizontal spiral centrifuge complete set system - Google Patents
Dual-pump driven hydraulic station for horizontal spiral centrifuge complete set system Download PDFInfo
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- CN1807904A CN1807904A CN 200510023413 CN200510023413A CN1807904A CN 1807904 A CN1807904 A CN 1807904A CN 200510023413 CN200510023413 CN 200510023413 CN 200510023413 A CN200510023413 A CN 200510023413A CN 1807904 A CN1807904 A CN 1807904A
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Abstract
The invention relates to a dual-pump drive hydraulic station used in lie screw eccentric machine, which comprises an oil bank, the first variable pump, a variable-frequency motor, and a hydraulic motor. Wherein, the first variable pump is connected to the oil bank, and via the coupling connected to the variable-frequency pump; the first variable pump via the first one-way valve and high-pressure is connected to the hydraulic motor; the first variable pump is parallel connected to the second variable pump; the second variable pump via the coupling is connected to a motor and the second one-way valve; the second one-way valve is connected to the high-pressure oil pipeline. In operation, first starting the motor in full-load operation; adjusting the set flux of second variable pump to meet the minimum differential speed of material; when the material need higher differential speed, starting the variable-frequency motor, the rotational speed via the coupling can be transmitted to the first variable pump to change the discharge amount of first variable pump to supply high differential speed to the eccentric machine. The invention via adding the hydraulic motor and increasing the differential rotational speed adjusting range, can increase the stability of hydraulic system.
Description
Technical field:
The present invention relates to centrifuge, relate in particular to the hydraulic power unit in the horizontal spiral centrifuge complete set system, particularly a kind of dual-pump driven hydraulic station that is used for horizontal spiral centrifuge complete set system.
Background technique:
In the prior art, pumping plant all adopts single pump to drive, and utilizes external frequency variator adjustment difference rotating speed, and hydraulic station utilizes the feedback valve group to regulate the moment of torsion of difference rotating speed when load variations, makes it with the proportional variation of load, compensates automatically thereby reach power.This pumping plant is better at the effect of sewage treatment industry, but at chemical industry, metallurgy industry, because material viscosity greatly, is easily solidified and treating capacity is big, so also corresponding increase of needed poor rotating speed with moment of torsion, single pump drives between the lift-off of the ability that causes power back-off and difference rotating speed obviously deficiency, even the phenomenon of centrifuge putty occurs.
Summary of the invention:
Technical problem of the prior art to be solved by this invention is: since obviously not enough between the lift-off of the ability of existing single pump driving pumping plant power back-off and difference rotating speed, so the centrifuge putty can occur.
The present invention provides a kind of dual-pump driven hydraulic station that is used for horizontal spiral centrifuge complete set system for the technological scheme that solves above-mentioned technical problem of the prior art and adopt, the described this dual-pump driven hydraulic station of horizontal spiral centrifuge complete set system that is used for is by fuel tank, first variable displacement pump, variable-frequency motor and oil hydraulic motor constitute, described first variable displacement pump links to each other with described fuel tank, described first variable displacement pump links to each other with described variable-frequency motor by a shaft joint, described first variable displacement pump links to each other with described oil hydraulic motor with a high-pressure oil passage through one first one-way valve, wherein, described first variable displacement pump is connected in parallel to one second variable displacement pump, described second variable displacement pump links to each other with a motor by another shaft joint, described second variable displacement pump links to each other with one second one-way valve, and described second one-way valve links to each other with described high-pressure oil passage.
Further, described first one-way valve with link to each other with a high pressure filter after second one-way valve is connected to described high-pressure oil passage, be connected with an electromagnetic relief valve in the high-pressure oil passage between described first one-way valve and second one-way valve and the described high pressure filter, be connected with pressure transducer in the high-pressure oil passage between described high pressure filter and the described oil hydraulic motor, pressure gauge and switch, pressure relay and electro-hydraulic reversing valve, one end of described electro-hydraulic reversing valve links to each other with a rotary connector, described rotary connector links to each other with described oil hydraulic motor, described oil hydraulic motor links to each other with described fuel tank by return line, be provided with flowmeter and cooler in the described return line, described fuel tank is provided with air-strainer, temperature relay, liquid level relay and liquid level liquid thermometer.
Further, described second variable displacement pump is an axial piston pump.
Further, described first variable displacement pump is an axial piston pump.
Working procedure of the present invention is as follows: first actuating motor, make its running at full capacity, regulate second variable displacement pump and set flow, when material needs bigger differential, start variable-frequency motor to satisfy the minimum differential that material is allowed, rotating speed is passed to first variable displacement pump by shaft joint, change the first variable pump delivery, give the bigger differential of centrifuge, fast isolated solid is released, prevent that isolated solid from awl section overstand, causing putty.Article two, high-pressure oil passage merges into one the tunnel by one-way valve respectively, and by high pressure filter with the hydraulic oil filtering, drive oil hydraulic motor, the low pressure oil that is gone out by oil hydraulic motor is by cooler cooling back backflow fuel tank.When putty, described electro-hydraulic reversing valve switches makes the oil hydraulic motor counter-rotating, thereby discharges buildup.
The present invention and prior art contrast, and its effect is positive and tangible.The present invention has increased by a cover oil hydraulic pump in existing pumping plant, thereby has increased the adjustment range of poor rotating speed, has improved the stability of hydraulic system, makes horizontal helico-centrifuger safety and stability running continuously.
Description of drawings:
Fig. 1 is a kind of structural principle schematic representation that is used for the dual-pump driven hydraulic station of horizontal spiral centrifuge complete set system of the present invention.
Embodiment:
As shown in Figure 1, a kind of dual-pump driven hydraulic station that is used for horizontal spiral centrifuge complete set system of the present invention, by fuel tank 22, first variable displacement pump 3, variable-frequency motor 1 and oil hydraulic motor 14 constitute, described first variable displacement pump 3 links to each other with described fuel tank 22, described first variable displacement pump 3 links to each other with described variable-frequency motor 1 by a shaft joint 2, described first variable displacement pump 3 links to each other with described oil hydraulic motor 14 with a high-pressure oil passage through one first one-way valve 6, wherein, described first variable displacement pump 3 is connected in parallel to one second variable displacement pump 4, described second variable displacement pump 4 links to each other with a motor 5 by another shaft joint, described second variable displacement pump 4 links to each other with one second one-way valve 7, and described second one-way valve links to each other with 7 described high-pressure oil passages.
Further, described first one-way valve 6 with link to each other with a high pressure filter 9 after second one-way valve 7 is connected to described high-pressure oil passage, be connected with an electromagnetic relief valve 8 in the high-pressure oil passage between described first one-way valve 6 and second one-way valve 7 and the described high pressure filter 9, be connected with pressure transducer 10 in the high-pressure oil passage between described high pressure filter 9 and the described oil hydraulic motor 14, pressure gauge and switch 11, pressure relay 12 and electro-hydraulic reversing valve 15, one end of described electro-hydraulic reversing valve 15 links to each other with a rotary connector 13, described rotary connector 13 links to each other with described oil hydraulic motor 14, described oil hydraulic motor 14 links to each other with described fuel tank 22 by return line, be provided with flowmeter 17 and cooler 16 in the described return line, described fuel tank 22 is provided with air-strainer 18, temperature relay 19, liquid level relay 20 and liquid level liquid thermometer 21.
Further, described second variable displacement pump 4 is axial piston pumps.
Further, described first variable displacement pump 3 is axial piston pumps.
Claims (4)
1. dual-pump driven hydraulic station that is used for horizontal spiral centrifuge complete set system, by fuel tank, first variable displacement pump, variable-frequency motor and oil hydraulic motor constitute, described first variable displacement pump links to each other with described fuel tank, described first variable displacement pump links to each other with described variable-frequency motor by a shaft joint, described first variable displacement pump links to each other with described oil hydraulic motor with a high-pressure oil passage through one first one-way valve, it is characterized in that: described first variable displacement pump is connected in parallel to one second variable displacement pump, described second variable displacement pump links to each other with a motor by another shaft joint, described second variable displacement pump links to each other with one second one-way valve, and described second one-way valve links to each other with described high-pressure oil passage.
2. the dual-pump driven hydraulic station that is used for horizontal spiral centrifuge complete set system as claimed in claim 1, it is characterized in that: described first one-way valve with link to each other with a high pressure filter after second one-way valve is connected to described high-pressure oil passage, be connected with an electromagnetic relief valve in the high-pressure oil passage between described first one-way valve and second one-way valve and the described high pressure filter, be connected with pressure transducer in the high-pressure oil passage between described high pressure filter and the described oil hydraulic motor, pressure gauge and switch, pressure relay and electro-hydraulic reversing valve, one end of described electro-hydraulic reversing valve links to each other with a rotary connector, described rotary connector links to each other with described oil hydraulic motor, described oil hydraulic motor links to each other with described fuel tank by return line, be provided with flowmeter and cooler in the described return line, described fuel tank is provided with air-strainer, temperature relay, liquid level relay and liquid level liquid thermometer.
3. the dual-pump driven hydraulic station that is used for horizontal spiral centrifuge complete set system as claimed in claim 1 is characterized in that: described second variable displacement pump is an axial piston pump.
4. the dual-pump driven hydraulic station that is used for horizontal spiral centrifuge complete set system as claimed in claim 1 is characterized in that: described first variable displacement pump is an axial piston pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100234132A CN100462571C (en) | 2005-01-18 | 2005-01-18 | Dual-pump driven hydraulic station for horizontal spiral centrifuge complete set system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100234132A CN100462571C (en) | 2005-01-18 | 2005-01-18 | Dual-pump driven hydraulic station for horizontal spiral centrifuge complete set system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1807904A true CN1807904A (en) | 2006-07-26 |
| CN100462571C CN100462571C (en) | 2009-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100234132A Expired - Fee Related CN100462571C (en) | 2005-01-18 | 2005-01-18 | Dual-pump driven hydraulic station for horizontal spiral centrifuge complete set system |
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| CN (1) | CN100462571C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757990B (en) * | 2009-08-25 | 2012-05-02 | 上海市离心机械研究所有限公司 | Method for electrically controlling hydraulic differential of centrifuge |
| CN103056136A (en) * | 2013-02-04 | 2013-04-24 | 康百世朝田液压机电(中国)有限公司 | Large-pipeline hydraulic flushing system |
| CN103920603A (en) * | 2014-04-01 | 2014-07-16 | 江苏科技大学 | Hydraulic system of horizontal screw-discharging filter centrifuge and control method of hydraulic system |
| CN105465057A (en) * | 2016-01-12 | 2016-04-06 | 湖州优创科技有限公司 | Hydraulic pressure station of small glue sprayer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922485B (en) * | 2010-04-13 | 2014-02-19 | 中联重科股份有限公司 | Hydraulic control system and hydraulic control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3734399A (en) * | 1971-05-28 | 1973-05-22 | Beloit Corp | Differential scroll drive |
| DE2551788A1 (en) * | 1975-11-18 | 1977-06-02 | Flottweg Werk Bruckmayer | FULLY-SLEEVED SCREW CENTRIFUGE WITH DIFFERENTIAL SPEED-VARIABLE COUPLING BETWEEN SHEATH PART AND SCREW PART |
| CN2103377U (en) * | 1991-07-09 | 1992-05-06 | 王雅谷 | High-speed rotator for horizontal centrifuger |
| US5919123A (en) * | 1997-01-29 | 1999-07-06 | M-I Drilling Fluids L.L.C. | Method for controlling a centrifuge system utilizing stored electrical energy generated by braking the centrifuge bowl |
| CN2773370Y (en) * | 2005-01-18 | 2006-04-19 | 上海市离心机械研究所有限公司 | Hydraulic station with double-pump driven for horizontal-screw centrifugal set system |
-
2005
- 2005-01-18 CN CNB2005100234132A patent/CN100462571C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757990B (en) * | 2009-08-25 | 2012-05-02 | 上海市离心机械研究所有限公司 | Method for electrically controlling hydraulic differential of centrifuge |
| CN103056136A (en) * | 2013-02-04 | 2013-04-24 | 康百世朝田液压机电(中国)有限公司 | Large-pipeline hydraulic flushing system |
| CN103920603A (en) * | 2014-04-01 | 2014-07-16 | 江苏科技大学 | Hydraulic system of horizontal screw-discharging filter centrifuge and control method of hydraulic system |
| CN103920603B (en) * | 2014-04-01 | 2016-04-13 | 江苏科技大学 | Horizontal screw unloading filter centrifugal machine Hydraulic system and control method |
| CN105465057A (en) * | 2016-01-12 | 2016-04-06 | 湖州优创科技有限公司 | Hydraulic pressure station of small glue sprayer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100462571C (en) | 2009-02-18 |
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