CN101705955A - Horomill hydraulic circuit with fast and smooth pressure-adding function - Google Patents
Horomill hydraulic circuit with fast and smooth pressure-adding function Download PDFInfo
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- CN101705955A CN101705955A CN200910035440A CN200910035440A CN101705955A CN 101705955 A CN101705955 A CN 101705955A CN 200910035440 A CN200910035440 A CN 200910035440A CN 200910035440 A CN200910035440 A CN 200910035440A CN 101705955 A CN101705955 A CN 101705955A
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Abstract
The invention provides a horomill hydraulic circuit with fast and smooth pressure-adding function. The hydraulic circuit comprises a high-pressure oil pump, an electromagnetic overflow valve, hydraulic control check valves, a pressure transmitter II, an accumulator II and a difunctional hydraulic oil cylinder, wherein the high-pressure oil pump is connected with the two hydraulic control check valves through the electromagnetic overflow and a electromagnetic change-over valve; the fluid control check valve I and the hydraulic control check valve II are separately connected with the rod cavity and rodless cavity of the difunctional hydraulic oil cylinder; and a pressure-adding mechanism composed of a check valve, a pressure transmitter I, a two position two-way electromagnetic change-over valve and a accumulator I is arranged between the electromagnetic overflow valve and the electromagnetic change-over valve, the two position two-way electromagnetic change-over valve is also connected with the accumulator II and the rod cavity of the difunctional hydraulic oil cylinder, and the pressure-adding mechanism is used to supply the pressure for the rod cavity of the difunctional hydraulic oil cylinder and the accumulator II. The hydraulic circuit of the invention has reasonable design, simple structure and good fast and smooth pressure-adding function so as to ensure the smooth working pressure of the hydraulic circuit and increase the grinding efficiency and operational reliability of the horomill.
Description
Technical field
The present invention relates to a kind of oil hydraulic circuit, particularly a kind of roller mill oil hydraulic circuit for sleeping in quick and stable ftercompction function.
Background technique
Existing roller for sleeping in mill oil hydraulic circuit is made up of high pressure oil pump, electromagnetic relief valve, solenoid directional control valve, Pilot operated check valve, pressure transmitter, accumulator and double-act-ing hydraulic J-Horner etc. usually, and the end of the two-piston bar of double-act-ing hydraulic J-Horner links to each other with the two ends of the pressure roller of roller mill for sleeping in respectively.When the roller grinder that crouches was done, the rod chamber and the accumulator that start double-act-ing hydraulic J-Horner by high pressure oil pump pressurizeed, and when system pressure reached the working pressure of setting, high pressure oil pump quit work, and the roller mill that crouches enters working state; Do to require in the process rod chamber working pressure of double-act-ing hydraulic J-Horner to keep constant in the roller grinder that crouches, its pressure differential range need be controlled at ± 0.2MPa between, could not influence the mill efficiency of the roller mill that crouches like this.Can existing oil hydraulic circuit owing to be to adopt high pressure oil pump that the rod chamber and the accumulator of double-act-ing hydraulic J-Horner are carried out ftercompction, therefore high pressure oil pump is in frequent starting ftercompction under the situation of high pressure in oil hydraulic circuit, make that high pressure oil pump injury itself is very big, the speed of high pressure oil pump ftercompction simultaneously is slower, thereby has directly influenced the mill efficiency of roller mill for sleeping in.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of effective raising mill efficiency, guarantee that the roller for sleeping in quick and stable ftercompction function of normal operation of oil hydraulic circuit and roller for sleeping in mill reliably working grinds oil hydraulic circuit.
The technical solution adopted for the present invention to solve the technical problems is: it includes high pressure oil pump, electromagnetic relief valve, Pilot operated check valve, pressure transmitter II, accumulator II and double-act-ing hydraulic J-Horner; High pressure oil pump links to each other with two Pilot operated check valves through electromagnetic relief valve, solenoid directional control valve, and Pilot operated check valve I wherein links to each other with the rod chamber of double-act-ing hydraulic J-Horner behind pressure transmitter II and accumulator II; Pilot operated check valve II links to each other with the rodless cavity of double-act-ing hydraulic J-Horner; The end of the two-piston bar of double-act-ing hydraulic J-Horner links to each other with the two ends of roller mill pressure roller for sleeping in respectively; It is characterized in that: between electromagnetic relief valve and solenoid directional control valve, be provided with the ftercompction mechanism that is constituted by the one-way valve that links to each other successively, pressure transmitter I, bi-bit bi-pass solenoid directional control valve and accumulator I, and the bi-bit bi-pass solenoid directional control valve links to each other with the rod chamber of accumulator II and double-act-ing hydraulic J-Horner also.
The setting high pressure of above-mentioned accumulator I is 1.25～1.35 times of setting pressure of accumulator II; The setting low pressure of accumulator I is 1.08～1.15 times of setting pressure of accumulator II.
When the roller grinder that crouches is done, at first start high pressure oil pump, when the rod chamber of double-act-ing hydraulic J-Horner and accumulator II reached setting pressure, solenoid directional control valve quit work, and this moment, the rod chamber and the accumulator II of double-act-ing hydraulic J-Horner were in running order; And high pressure oil pump continues the pressurization to ftercompction mechanism, promptly continues to pressurize to accumulator I by one-way valve, pressure transmitter I; When the pressure in the accumulator I reaches the setting high pressure, high pressure oil pump quits work. crouch the roller mill in course of normal operation, when the rod chamber of double-act-ing hydraulic J-Horner and the pressure in the accumulator II are lower than setting pressure 0.2MPa, bi-bit bi-pass electromagnetic switch valve events, by rod chamber and the accumulator II quick and stable ground ftercompction of accumulator I to double-act-ing hydraulic J-Horner, when treating that the rod chamber of double-act-ing hydraulic J-Horner and accumulator II reach the working pressure of setting, the bi-bit bi-pass solenoid directional control valve quits work. when the pressure in the accumulator I drops to setting low pressure, then accumulator I is carried out ftercompction by high pressure oil pump. like this, carry out ftercompction by ftercompction mechanism to the rod chamber and the accumulator II of double-act-ing hydraulic J-Horner, thereby avoided the frequent starting of high pressure oil pump, and ftercompction mechanism can carry out to quick and stable ftercompction.
Beneficial effect of the present invention is: reasonable in design, simple in structure, have good quick and stable ftercompction function, and make the working pressure of oil hydraulic circuit steady, improved the mill efficiency and the functional reliability of roller mill for sleeping in effectively.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Among the figure: 1 is that fuel tank, 2 is that high pressure oil pump, 3 is that electromagnetic relief valve, 4 is that one-way valve, 5-1 are that pressure transmitter I, 5-2 are that pressure transmitter II, 6 is that solenoid directional control valve, 7-1 are that Pilot operated check valve I, 7-2 are that Pilot operated check valve II, 8 is that bi-bit bi-pass solenoid directional control valve, 9 is that double-acting hydraulic cylinder, 10-1 are that accumulator I, 10-2 are that accumulator II, 11 is that cylindrical shell, 12 is that pressure roller, 13 is an one-way valve.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
The present invention includes fuel tank 1, high pressure oil pump 2, electromagnetic relief valve 3, solenoid directional control valve 6, Pilot operated check valve I7-1, Pilot operated check valve II7-2, pressure transmitter II5-2, accumulator II10-2, double-act-ing hydraulic J-Horner 9 and ftercompction mechanism; Link to each other with Pilot operated check valve I7-1, Pilot operated check valve II7-2 through one-way valve 13, electromagnetic relief valve 3, solenoid directional control valve 6 with the high pressure oil pump 2 that fuel tank 1 interlinks, electromagnetic relief valve 3 interlinks with fuel tank 1; Pilot operated check valve I7-1 links to each other with the rod chamber of double-act-ing hydraulic J-Horner 9 behind pressure transmitter II5-2 and accumulator II10-2; Pilot operated check valve II7-2 links to each other with the rodless cavity of double-act-ing hydraulic J-Horner 9; The end of the two-piston bar of double-act-ing hydraulic J-Horner 9 links to each other with the two ends of roller mill pressure roller 12 for sleeping in respectively; Between electromagnetic relief valve 3 and solenoid directional control valve 6, be provided with ftercompction mechanism.Described ftercompction mechanism comprises one-way valve 4, pressure transmitter I5-1, bi-bit bi-pass solenoid directional control valve 8 and accumulator I10-1; One-way valve 4, pressure transmitter I5-1, bi-bit bi-pass solenoid directional control valve 8 and accumulator I10-1 link to each other successively, and one-way valve 4 links to each other with electromagnetic relief valve 3, and bi-bit bi-pass solenoid directional control valve 8 also links to each other with the rod chamber of accumulator II and double-act-ing hydraulic J-Horner 9.
When the roller grinder that crouches is done, start high pressure oil pump 2 earlier, electromagnetic relief valve 3 action releases, after treating the normal operation of motor of high pressure oil pump 2, electromagnetic relief valve 3 stops action, solenoid directional control valve 6 action, double-act-ing hydraulic J-Horner 9 will crouch the pressure roller 12 drop-down cylindrical shells 11 of roller mill with rotation contact to material pressurize, grinding; When the rod chamber and the accumulator II10-2 of double-act-ing hydraulic J-Horner 9 reach the setting pressure (working pressure of the roller mill that promptly crouches, with 10MPa is example) time, solenoid directional control valve 6 stops action, Pilot operated check valve I7-1 lock pressure, and high pressure oil pump 2 continues the pressurization to accumulator I10-1, treats that the pressure in the accumulator I reaches when setting high pressure 13MPa, and high pressure oil pump 2 quits work, pressure in the one-way valve 4 locking accumulator I10-1, the roller mill that crouches begins to enter normal working.When the rod chamber of double-act-ing hydraulic J-Horner 9 and the pressure in the accumulator II10-2 are lower than setting pressure 0.2MPa, bi-bit bi-pass solenoid directional control valve 8 actions of ftercompction mechanism, accumulator I10-1 is quick and stable ground ftercompction in the rod chamber of double-act-ing hydraulic J-Horner 9 and accumulator II10-2, after reaching setting pressure, bi-bit bi-pass solenoid directional control valve 8 stops action.When the pressure of accumulator I10-1 was lower than setting low pressure 11MPa, high pressure oil pump 2 started, electromagnetic relief valve 3 action releases, after treating the motor operation normally of high pressure oil pump 2, electromagnetic relief valve 3 stops action, and accumulator I10-1 begins ftercompction and reaches when setting high pressure, and high pressure oil pump 2 quits work.
The present invention is owing to adopt in comprising the ftercompction mechanism of one-way valve 4, pressure transmitter I5-1, bi-bit bi-pass solenoid directional control valve 8 and accumulator I10-1, overcome prior art and directly adopted high pressure oil pump 2 ftercompction and high pressure oil pump 2 frequent starting rapid wears, the oil hydraulic circuit shakiness that exists, the problem that influences mill efficiency in the rod chamber of double-act-ing hydraulic J-Horner 9 and accumulator II10-2, so the present invention has ftercompction quick and stable, oil hydraulic circuit pressure stability, improves mill efficiency and the advantage of the roller mill reliable operation that guarantees to crouch.
Claims (2)
1. have the roller mill oil hydraulic circuit for sleeping in of quick and stable ftercompction function, include high pressure oil pump, electromagnetic relief valve, Pilot operated check valve, pressure transmitter II, accumulator II and double-act-ing hydraulic J-Horner; High pressure oil pump links to each other with two Pilot operated check valves through electromagnetic relief valve, solenoid directional control valve, and Pilot operated check valve I wherein links to each other with the rod chamber of double-act-ing hydraulic J-Horner behind pressure transmitter II and accumulator II; Pilot operated check valve II links to each other with the rodless cavity of double-act-ing hydraulic J-Horner; The end of the two-piston bar of double-act-ing hydraulic J-Horner links to each other with the two ends of roller mill pressure roller for sleeping in respectively; It is characterized in that: between electromagnetic relief valve and solenoid directional control valve, be provided with the ftercompction mechanism that is constituted by the one-way valve that links to each other successively, pressure transmitter I, bi-bit bi-pass solenoid directional control valve and accumulator I, and the bi-bit bi-pass solenoid directional control valve links to each other with the rod chamber of accumulator II and double-act-ing hydraulic J-Horner also.
2. the roller for sleeping in mill oil hydraulic circuit with quick and stable ftercompction function according to claim 1 is characterized in that: the setting high pressure of above-mentioned accumulator I is 1.25～1.35 times of setting pressure of accumulator II; The setting low pressure of accumulator I is 1.08～1.15 times of setting pressure of accumulator II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910035440A CN101705955A (en) | 2009-09-28 | 2009-09-28 | Horomill hydraulic circuit with fast and smooth pressure-adding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910035440A CN101705955A (en) | 2009-09-28 | 2009-09-28 | Horomill hydraulic circuit with fast and smooth pressure-adding function |
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| Publication Number | Publication Date |
|---|---|
| CN101705955A true CN101705955A (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910035440A Pending CN101705955A (en) | 2009-09-28 | 2009-09-28 | Horomill hydraulic circuit with fast and smooth pressure-adding function |
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| CN (1) | CN101705955A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383849A (en) * | 2014-11-12 | 2015-03-04 | 常州一步干燥设备有限公司 | Extrusion device for dry type granulator |
| CN104772187A (en) * | 2015-03-30 | 2015-07-15 | 南京梅山冶金发展有限公司 | Control method for automatic adjusting of roller gap of four-roller crusher |
| CN104790398A (en) * | 2015-02-15 | 2015-07-22 | 金海重工股份有限公司 | Self-elevating type ocean platform safe and controllable ejection system |
| CN106541610A (en) * | 2016-12-12 | 2017-03-29 | 天津书芹科技有限公司 | Electromechanical organisation of working with accumulator ftercompction |
| CN106739123A (en) * | 2016-12-12 | 2017-05-31 | 天津书芹科技有限公司 | By the electromechanical organisation of working of Electromagnetic Control |
| CN106762893A (en) * | 2016-12-12 | 2017-05-31 | 天津书芹科技有限公司 | Electromechanical organisation of working with voltage stabilizing function |
| CN110118169A (en) * | 2018-02-06 | 2019-08-13 | 爱伏机械(上海)有限公司 | A kind of hydraulic concrete double-piston pump commutation current stabilization control system |
| CN113083440A (en) * | 2021-03-10 | 2021-07-09 | 栾川县金鼎矿业有限公司 | Dynamic control and deviation-correcting hydraulic system for roller gap of high-pressure roller mill and control method |
| CN113565813A (en) * | 2021-09-01 | 2021-10-29 | 成都大宏立机器股份有限公司 | Roller press hydraulic system with full-automatic pressure maintaining (releasing) function |
| CN114953577A (en) * | 2022-05-27 | 2022-08-30 | 成都正西液压设备制造有限公司 | Novel powder hydraulic press |
-
2009
- 2009-09-28 CN CN200910035440A patent/CN101705955A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383849A (en) * | 2014-11-12 | 2015-03-04 | 常州一步干燥设备有限公司 | Extrusion device for dry type granulator |
| CN104790398A (en) * | 2015-02-15 | 2015-07-22 | 金海重工股份有限公司 | Self-elevating type ocean platform safe and controllable ejection system |
| CN104772187A (en) * | 2015-03-30 | 2015-07-15 | 南京梅山冶金发展有限公司 | Control method for automatic adjusting of roller gap of four-roller crusher |
| CN106541610A (en) * | 2016-12-12 | 2017-03-29 | 天津书芹科技有限公司 | Electromechanical organisation of working with accumulator ftercompction |
| CN106739123A (en) * | 2016-12-12 | 2017-05-31 | 天津书芹科技有限公司 | By the electromechanical organisation of working of Electromagnetic Control |
| CN106762893A (en) * | 2016-12-12 | 2017-05-31 | 天津书芹科技有限公司 | Electromechanical organisation of working with voltage stabilizing function |
| CN110118169A (en) * | 2018-02-06 | 2019-08-13 | 爱伏机械(上海)有限公司 | A kind of hydraulic concrete double-piston pump commutation current stabilization control system |
| CN113083440A (en) * | 2021-03-10 | 2021-07-09 | 栾川县金鼎矿业有限公司 | Dynamic control and deviation-correcting hydraulic system for roller gap of high-pressure roller mill and control method |
| CN113565813A (en) * | 2021-09-01 | 2021-10-29 | 成都大宏立机器股份有限公司 | Roller press hydraulic system with full-automatic pressure maintaining (releasing) function |
| CN114953577A (en) * | 2022-05-27 | 2022-08-30 | 成都正西液压设备制造有限公司 | Novel powder hydraulic press |
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Open date: 20100512 |