CN101315088A - Horizontal roller hydraulic circuit system with pressure-relief protection function - Google Patents
Horizontal roller hydraulic circuit system with pressure-relief protection function Download PDFInfo
- Publication number
- CN101315088A CN101315088A CNA2008101325912A CN200810132591A CN101315088A CN 101315088 A CN101315088 A CN 101315088A CN A2008101325912 A CNA2008101325912 A CN A2008101325912A CN 200810132591 A CN200810132591 A CN 200810132591A CN 101315088 A CN101315088 A CN 101315088A
- Authority
- CN
- China
- Prior art keywords
- valve
- double
- pressure
- hydraulic
- circuit system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 abstract 5
- 239000003921 oil Substances 0.000 abstract 2
- 238000003801 milling Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 7
- 239000002828 fuel tank Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Landscapes
- Crushing And Grinding (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a hydraulic circuit system for a horizontal roller mill with a pressure relief protection function. The hydraulic circuit system comprises a high-pressure oil pump, an electromagnetic relief valve, two hydraulic control check valves, a pressure transmitter, a power accumulator, and a double-acting hydraulic oil cylinder. The high-pressure oil pump is connected with hydraulic control check valves (I) and (II) via the electromagnetic relief valve and an electromagnetic directional valve, and the hydraulic control check valve (I) is connected with a pole cavity of the double-acting hydraulic oil cylinder after passing though the pressure transmitter, a diverting and throttling valve and the power accumulator; the hydraulic control check valve (II) is connected with a pole-free cavity of the double-acting hydraulic oil cylinder; two piston rods of the double-acting hydraulic oil cylinder are respectively connected with the two ends of a press roller of the horizontal roller mill; and an electromagnetic ball valve is connected between the pressure transmitter and the diverting and throttling valve, and a prefill valve connected with the electromagnetic ball valve is connected between the hydraulic control check valve (II) and the pole-free cavity of the double-acting hydraulic oil cylinder. The inventive hydraulic circuit system has reasonable design, minimizes the counter pressure of the hydraulic circuit system, and has good pressure relief protection function, so as to ensure the safe operation of the hydraulic circuit system and effectively improve the milling efficiency and operational reliability of the horizontal roller mill.
Description
Technical field
The present invention relates to a kind of hydraulic circuit system, particularly a kind of roller mill hydraulic circuit system for sleeping in unloading pressure protection function.
Background technique
Existing roller for sleeping in mill hydraulic circuit system 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 is done, the rod chamber and the accumulator that start double-act-ing hydraulic J-Horner by high pressure oil pump pressurize, high pressure oil pump quits work when system pressure reaches working pressure, the roller mill that crouches enters working state, the roller grinder that crouches do the piston of double-act-ing hydraulic J-Horner in the process can be along with the roller mill mill that crouches in the variation of thickness of material and fore and aft motion, the interior fluid of double-act-ing hydraulic J-Horner rodless cavity can be automatically locked by hydraulic circuit system in the hydraulic circuit system.When rising, the double-act-ing hydraulic J-Horner piston can form vacuum in the rodless cavity; When the double-act-ing hydraulic J-Horner piston descended, the fluid in the rodless cavity can be compressed.Owing to the above-mentioned burden that either way can cause the working pressure of hydraulic circuit system forms back pressure, directly influence the mill efficiency of the roller mill that crouches; And, do in the process in roller grinder for sleeping in, when in the rotating cylindrical shell suddenly during fracture, pressure roller can drive the double-act-ing hydraulic J-Horner piston and hurtle down, the buffer function power that its impact force produces greater than the damping device that is provided with in the cylinder body, and make between piston and the double-act-ing hydraulic J-Horner cylinder body and to produce rigid impact, double-act-ing hydraulic J-Horner is caused damage, also jeopardize the safety of crouch roller mill rotating cylinder and pressure roller simultaneously.
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 unloading pressure protection function of hydraulic circuit system safe operation and roller for sleeping in mill reliably working grinds hydraulic circuit system.
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, accumulator and double-act-ing hydraulic J-Horner; High pressure oil pump links to each other with two Pilot operated check valve I, II 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 respectively behind pressure transmitter, branch flow throttle valve and accumulator; Another 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: at pressure transmitter and divide between the flow throttle valve and be connected to Solenoid ball valve, between the rodless cavity of Pilot operated check valve II and double-act-ing hydraulic J-Horner, be connected to towards the liquid valve, and Solenoid ball valve with link to each other towards the liquid valve.Like this, when the pressure when hydraulic circuit system reached working pressure, high pressure oil pump quit work, and Solenoid ball valve action and control are towards the liquid opening of valves, the fluid that makes rodless cavity changes with position of piston and free-flow makes the back pressure of hydraulic circuit system be in minimum state.And; when in the horizontal roll grinding cylinder suddenly during fracture; the piston of double-act-ing hydraulic J-Horner will descend fast; Solenoid ball valve can be controlled towards the liquid valve and close this moment; fluid in the rodless cavity is retained in the rodless cavity; piston is played further buffer function, thereby protected the safety of double-act-ing hydraulic J-Horner, pressure roller and cylindrical shell.
Beneficial effect of the present invention is: reasonable in design, simple in structure; has good unloading pressure protection function; and make the back pressure of hydraulic circuit system be in minimum state, and guaranteed the safe operation of hydraulic circuit system, 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 for fuel tank, 2 for high pressure oil pump, 3 for electromagnetic relief valve, 4 for solenoid directional control valve, 5-1 be Pilot operated check valve I, 5-2 Pilot operated check valve II, 6 for pressure transmitter, 7 for divide flow throttle valve, 8 for Solenoid ball valve, 9 for being displacement transducer for cylindrical shell, 15 for pressure roller, 14 for double-act-ing hydraulic J-Horner, 13 for accumulator, 12 for pressure gauge, 11 towards liquid valve, 10.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
The present invention includes fuel tank 1, high pressure oil pump 2, electromagnetic relief valve 3, Pilot operated check valve I5-1, Pilot operated check valve II5-2 pressure transmitter 6, divides flow throttle valve 7, Solenoid ball valve 8, towards liquid valve 9, pressure gauge 10, accumulator 11, double-act-ing hydraulic J-Horner 12.Link to each other the electromagnetic relief valve 3 that between high pressure oil pump and solenoid directional control valve, also is provided with pressure gauge 10 and interlinks with Pilot operated check valve II5-2 with I5-1 through solenoid directional control valve 4 with the high pressure oil pump 2 that fuel tank 1 interlinks with fuel tank 1; Pilot operated check valve I5-1 links to each other with the rod chamber of double-act-ing hydraulic J-Horner 12 respectively behind pressure transmitter 6, branch flow throttle valve 7 and accumulator 11; Pilot operated check valve II5-2 links to each other with the rodless cavity of double-act-ing hydraulic J-Horner 12; The end of the two-piston bar of double-act-ing hydraulic J-Horner 12 links to each other with the two ends of roller mill pressure roller 13 for sleeping in respectively.Between pressure transmitter 6 and branch flow throttle valve 7, be connected to Solenoid ball valve 8; Between the rodless cavity of Pilot operated check valve II5-2 and double-act-ing hydraulic J-Horner 12, be connected to towards liquid valve 9, and Solenoid ball valve 8 with link to each other towards liquid valve 9, also interlink towards liquid valve 9 with fuel tank 1.
When the roller grinder that crouches is done, start high pressure oil pump 2 earlier, electromagnetic relief valve 3 action releases, after treating that the operation of high pressure oil pump motor is normal, electromagnetic relief valve 3 stops action, solenoid directional control valve 4 action, double-act-ing hydraulic J-Horner 12 with pressure roller 13 drop-down cylindrical shells 14 with rotation contact to material pressurize, grinding; When the pressure of hydraulic circuit system reached job requirement, high pressure oil pump 2 quit work, Pilot operated check valve I5-1 lock pressure, and the roller mill that crouches begins to enter normal working, and double-act-ing hydraulic J-Horner 12 pistons are done fore and aft motion with pressure roller 13.In the 2 out-of-work whiles of high pressure oil pump, Solenoid ball valve 8 actions and control are opened towards liquid valve 9, and the fluid of the rodless cavity of double-act-ing hydraulic J-Horner 12 changes free-flow with position of piston, makes the back pressure of hydraulic circuit system be in minimum state.When in the roller for sleeping in mill rotating cylinder 14 suddenly during fracture, pressure roller 13 can drive double-act-ing hydraulic J-Horner 12 pistons and descend fast, this moment, Solenoid ball valve 8 moved behind the signal that obtains being arranged at the displacement transducer 15 in the double-act-ing hydraulic J-Horner 12, and control and close towards liquid valve 9, the fluid that rests in the rodless cavity can be retained in the rodless cavity.Like this; double-act-ing hydraulic J-Horner 12 pistons are when descending fast; rest on the damping device that fluid in the rodless cavity and double-act-ing hydraulic J-Horner carry and play buffer function in the lump; avoid the bottom of piston and double-act-ing hydraulic J-Horner 12 to form rigid impact, protected the safety of double-act-ing hydraulic J-Horner 12, pressure roller 13 and cylindrical shell 14.
Claims (1)
1, have the roller mill hydraulic circuit system for sleeping in of unloading pressure protection function, it includes high pressure oil pump, electromagnetism electromagnetic relief valve, Pilot operated check valve, pressure transmitter, accumulator and double-act-ing hydraulic J-Horner; High pressure oil pump links to each other with two Pilot operated check valve I, II through electromagnetism 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 respectively behind pressure transmitter, branch flow throttle valve and accumulator; Another 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: at pressure transmitter and divide between the flow throttle valve and be connected to Solenoid ball valve, between the rodless cavity of Pilot operated check valve II and double-act-ing hydraulic J-Horner, be connected to towards the liquid valve, and Solenoid ball valve with link to each other towards the liquid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810132591 CN101315088B (en) | 2008-07-17 | 2008-07-17 | Horizontal roller hydraulic circuit system with pressure-relief protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810132591 CN101315088B (en) | 2008-07-17 | 2008-07-17 | Horizontal roller hydraulic circuit system with pressure-relief protection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101315088A true CN101315088A (en) | 2008-12-03 |
| CN101315088B CN101315088B (en) | 2010-07-21 |
Family
ID=40106206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810132591 Expired - Fee Related CN101315088B (en) | 2008-07-17 | 2008-07-17 | Horizontal roller hydraulic circuit system with pressure-relief protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101315088B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982399A (en) * | 2010-09-01 | 2011-03-02 | 安徽天康(集团)股份有限公司 | Hydraulic lift independent iron tower rod differential superposition back-pressure hydraulic system |
| CN102233288A (en) * | 2011-07-18 | 2011-11-09 | 成都利君实业股份有限公司 | Hydraulic system for rolling machine (high-pressure roller mill) |
| CN102705280A (en) * | 2012-06-25 | 2012-10-03 | 北京机械设备研究所 | Hydraulic circuit avoiding hydraulic impact from causing out-of-tolerance of double-cylinder movement stroke |
| CN103717915A (en) * | 2012-04-05 | 2014-04-09 | 优铁工有限公司 | Hydraulic circuit, and combination valve used in same hydraulic circuit |
| CN104235104A (en) * | 2014-09-18 | 2014-12-24 | 芜湖高昌液压机电技术有限公司 | Parallel connection combined throttle governing loop of lifting machine |
| CN104314886A (en) * | 2014-09-28 | 2015-01-28 | 埃里斯克矿山工程机械有限公司 | Device for controlling hydraulic circuit and lubricant oil circuit of cone crusher |
| CN104481944A (en) * | 2014-10-23 | 2015-04-01 | 三一汽车起重机械有限公司 | Depressurizing system and engineering machinery |
| CN106270108A (en) * | 2016-08-29 | 2017-01-04 | 南通锻压设备股份有限公司 | Separate unit integrated form blanking buffer unit |
| CN107269608A (en) * | 2017-07-25 | 2017-10-20 | 广州中船文冲船坞有限公司 | FPSO shipping rudder blade hydraulic Lock systems |
| CN108533557A (en) * | 2018-07-02 | 2018-09-14 | 长沙理工大学 | A kind of control pressurer system |
-
2008
- 2008-07-17 CN CN 200810132591 patent/CN101315088B/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982399A (en) * | 2010-09-01 | 2011-03-02 | 安徽天康(集团)股份有限公司 | Hydraulic lift independent iron tower rod differential superposition back-pressure hydraulic system |
| CN101982399B (en) * | 2010-09-01 | 2013-02-20 | 安徽天康(集团)股份有限公司 | Hydraulic lift independent iron tower rod differential superposition back-pressure hydraulic system |
| CN102233288A (en) * | 2011-07-18 | 2011-11-09 | 成都利君实业股份有限公司 | Hydraulic system for rolling machine (high-pressure roller mill) |
| CN102233288B (en) * | 2011-07-18 | 2014-05-14 | 成都利君实业股份有限公司 | Hydraulic system for rolling machine (high-pressure roller mill) |
| CN103717915A (en) * | 2012-04-05 | 2014-04-09 | 优铁工有限公司 | Hydraulic circuit, and combination valve used in same hydraulic circuit |
| CN102705280A (en) * | 2012-06-25 | 2012-10-03 | 北京机械设备研究所 | Hydraulic circuit avoiding hydraulic impact from causing out-of-tolerance of double-cylinder movement stroke |
| CN104235104A (en) * | 2014-09-18 | 2014-12-24 | 芜湖高昌液压机电技术有限公司 | Parallel connection combined throttle governing loop of lifting machine |
| CN104314886A (en) * | 2014-09-28 | 2015-01-28 | 埃里斯克矿山工程机械有限公司 | Device for controlling hydraulic circuit and lubricant oil circuit of cone crusher |
| CN104481944A (en) * | 2014-10-23 | 2015-04-01 | 三一汽车起重机械有限公司 | Depressurizing system and engineering machinery |
| CN104481944B (en) * | 2014-10-23 | 2016-08-24 | 三一汽车起重机械有限公司 | Depressurizing system and engineering machinery |
| CN106270108A (en) * | 2016-08-29 | 2017-01-04 | 南通锻压设备股份有限公司 | Separate unit integrated form blanking buffer unit |
| CN106270108B (en) * | 2016-08-29 | 2019-01-29 | 南通锻压设备如皋有限公司 | Separate unit integrated form blanking buffer unit |
| CN107269608A (en) * | 2017-07-25 | 2017-10-20 | 广州中船文冲船坞有限公司 | FPSO shipping rudder blade hydraulic Lock systems |
| CN108533557A (en) * | 2018-07-02 | 2018-09-14 | 长沙理工大学 | A kind of control pressurer system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101315088B (en) | 2010-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101315088B (en) | Horizontal roller hydraulic circuit system with pressure-relief protection function | |
| CN104179881B (en) | A kind of jack-up unit buffer system | |
| CN105257889A (en) | Electro-hydraulic driving system for sluice valve and sluice valve | |
| CN201502586U (en) | Hydraulic circuit of horomill | |
| CN101216057B (en) | Composite hydraulic cylinder with buffer capacity and method | |
| CN201246359Y (en) | Horizontal roller hydraulic circuit with pressure-relief protection function | |
| CN109058187B (en) | Unloading buffer hydraulic system | |
| CN202510450U (en) | Hydraulic oil cylinder and hydraulic system | |
| CN201828418U (en) | Hydraulic test system for horizontal dual-cylinder hydraulic machine | |
| CN102582116A (en) | Hydraulic device for garbage compression equipment | |
| CN103306642B (en) | Numerical control and energy saving is without rod beam-pumping unit | |
| JP2011058281A (en) | Hydraulic breaker control device of work machine | |
| CN204784959U (en) | Gate valve electricity liquid actuating system and gate valve | |
| CN101514948B (en) | Quick pressurization system for steel pipe hydrostatic tester | |
| CN203389700U (en) | Impact frame adjustment device and impact-type crushing machine | |
| CN103629194A (en) | Mechanical quick-operation type integrated electro-hydraulic actuator | |
| CN207879744U (en) | A kind of hydraulic synchronization speed regulation device of Vertical Mill | |
| CN102635106A (en) | Dynamic compaction buffer damping method of crawler crane | |
| CN102409659A (en) | X-type cross-damping oil line hydraulic system and dynamic compactor comprising same | |
| CN202783755U (en) | Independent hydraulic pushing support device for host machine | |
| CN112709779B (en) | Hydraulic safety buffer device for continuous rolling pipe unit | |
| CN211573893U (en) | Hydraulic system with buffering function for header | |
| CN203448169U (en) | Grinding roller limiting and buffering device of vertical grinder | |
| CN221237099U (en) | Hydraulic damping mechanism of vertical mill | |
| CN102304931A (en) | Hydraulic energy-saving control system and method for loader movable arm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 224051 Yancheng City environmental protection industrial park, No. five, No. 1 road, Jiangsu Patentee after: JIANGSU KEHANG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: 224003 Jiangsu Province, Yancheng City Pavilion Lakes Xinyang Road No. 9 Patentee before: Jiangsu Cohen Environmental Protection Co.,Ltd |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 224051 Yancheng City environmental protection industrial park, No. five, No. 1 road, Jiangsu Patentee after: JIANGSU COHEN ENVIRONMENTAL PROTECTION CO.,LTD. Address before: 224051 Yancheng City environmental protection industrial park, No. five, No. 1 road, Jiangsu Patentee before: JIANGSU KEHANG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 |