CN103861720A - Vertical pulverizer for grinding ultrafine powder - Google Patents
Vertical pulverizer for grinding ultrafine powder Download PDFInfo
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- CN103861720A CN103861720A CN201410106183.5A CN201410106183A CN103861720A CN 103861720 A CN103861720 A CN 103861720A CN 201410106183 A CN201410106183 A CN 201410106183A CN 103861720 A CN103861720 A CN 103861720A
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Abstract
The invention discloses a vertical pulverizer for grinding ultrafine powder. The vertical pulverizer for grinding ultrafine powder comprises a mechanical mechanism and a hydraulic mechanism, wherein a proportional valve control amplifier (16) of the hydraulic mechanism comprises an input interface unit (18) connected with an electric controller (17); the input interface unit (18) is connected with a signal processing unit (19); the signal processing unit (19) is connected with a power amplifying unit (20) connected with a proportional speed regulating valve (15); the proportional speed regulating valve (15) is provided with a displacement sensor (21) connected with a signal conditioning circuit (22); the signal conditioning circuit (22) is connected with the signal processing unit (19). The vertical pulverizer for grinding ultrafine powder, which is provided by the invention, can effectively prevent equipment failure caused by motor overloading; meanwhile, the hydraulic mechanism provided by the invention has superior stability and reliability, and the powder fineness and consistency after grinding are very ideal.
Description
Technical field
The present invention relates to a kind of vertical crusher of grinding superfine powder, particularly a kind of vertical crusher for grinding superfine powder such as powder ore, grounds travel, cereal.
Background technology
Vertical crusher is generally used for powder ore, grounds travel or cereal etc., and its operation principle is to be driven and pressed down ore by hydraulic cylinder, and driven by motor is pulverized hub rotation in pressing down, and further improves the effect of pulverizing.But the structure of the hydraulic mechanism of existing vertical crusher unreasonable, cause the control characteristic of steady state of its hydraulic mechanism not good, antijamming capability a little less than, cause system more unstable in the time of work, powder fineness and uniformity bad that pulverizer is ground out, this is that restriction superfine powder crushing technology is difficult to the crucial difficult problem breaking through.
Summary of the invention
The object of the invention is to, a kind of vertical crusher of grinding superfine powder is provided.The present invention can both can effectively prevent motor overload and the equipment fault that causes, and hydraulic mechanism of the present invention has superior stability and reliability simultaneously, ground the powder fineness and the uniformity that obtain all ideal.
Technical scheme of the present invention: a kind of vertical crusher of grinding superfine powder, comprise mechanical mechanism and hydraulic mechanism, mechanical mechanism comprises frame, the middle part of frame is provided with charging conveyer belt, work conveyer belt and discharging conveyer belt from front to back successively, the top of work conveyer belt has pushing cylinder, and the below of work conveyer belt has upper cylinder pressure; The both sides of described work conveyer belt are also provided with tongue and groove cutting cylinder, and the external part of tongue and groove cutting cylinder is provided with tongue and groove cutter head; The top of described work conveyer belt is also provided with infrared inductor, and the output via line of infrared inductor is connected with pushing cylinder with upper cylinder pressure; Described hydraulic mechanism comprises oil pump, and oil pump is connected with a three position four-way electromagnetic valve through P oil circuit, and the A oil circuit of three position four-way electromagnetic valve is connected with the two ends of upper pressure cylinder piston respectively with B oil circuit, and the T oil circuit of three position four-way electromagnetic valve is connected with fuel tank; On described B oil circuit, be connected with a proportional velocity regulating valve, proportional velocity regulating valve is connected with a proportional valve control amplifier, and proportional valve control amplifier is connected with a pressure sensor, and pressure sensor is arranged on the surface of pushing cylinder; Described proportional valve control amplifier comprises the input interface unit being connected with pressure sensor, and input interface unit is connected with a signal processing unit, and signal processing unit connects a power amplification unit, and power amplification unit is connected with proportional velocity regulating valve; Described proportional velocity regulating valve is provided with displacement transducer, and displacement transducer is connected with a signal conditioning circuit, and signal conditioning circuit is connected with signal processing unit.
In the hydraulic control system that above-mentioned timber floor constant voltage press is used, on described discharging conveyer belt, be provided with manipulator.
In the hydraulic control system that aforesaid timber floor constant voltage press is used, the side of described tongue and groove cutting cylinder is provided with spraying temp. lowering apparatus.
In the hydraulic control system that aforesaid timber floor constant voltage press is used, between described signal processing unit and power amplification unit, be also provided with signal conditioning unit.
In the hydraulic control system that aforesaid timber floor constant voltage press is used, described signal processing unit is FPGA.
In the hydraulic control system that aforesaid timber floor constant voltage press is used, described signal conditioning unit comprises operational amplifier U1, the negative input end of U1 is connected with signal processing unit through resistance R 0, the negative input end of U1 is also connected with the output of U1 with capacitor C through resistance R 1, and the output of U1 is connected with power amplification unit.
Compared with prior art, the present invention has following beneficial effect:
(1) by being arranged on proportional velocity regulating valve on the B oil circuit of hydraulic mechanism and the FEEDBACK CONTROL between electric controller, electric controller detects the phase current of motor, be depressed into and to a certain degree make to pulverize hub and rotate when slack-off when pulverizing hub, the phase current of motor changes, electric controller picked up signal control ratio flow speed control valve carry out speed governing, reduce the feed speed that presses down of hydraulic cylinder, thereby change the rotary load of pulverizing hub, avoid the equipment fault causing due to overload, the present invention simultaneously also can guarantee to pulverize hub all the time with certain rotating speed rotation, has guaranteed crushing effect.
(2) the present invention also comparative example valve control amplifier improve, proportional valve control amplifier after improvement has good control characteristic of steady state, dynamic response is fast, the power consumption of bandwidth, power-amplifier stage is little, antijamming capability is strong, has good stability and certainty equivalence fruit.Therefore hydraulic cylinder is stable and reliable, and powder fineness and uniformity that grinding is obtained are all ideal.
(3) the present invention also improves signal conditioning unit, and the signal conditioning unit after improvement can suppress interference volume rapidly, can adjust accurately again, eliminates static difference.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the schematic diagram of hydraulic mechanism of the present invention;
Fig. 3 is the structural representation of proportional valve control amplifier;
Fig. 4 is the structural representation of signal conditioning unit;
Fig. 5 is the structural representation of signal conditioning circuit.
Being labeled as in accompanying drawing: 1-support, 2-support column, 3-workbench, 4-grinding groove, 5-joint face, 6-cantilever, 7-motor, 8-reduction box, 9-main shaft, 10-overflow valve, 12-oil pump, 13-three position four-way electromagnetic valve, 14-hydraulic cylinder, 15-proportional velocity regulating valve, 16-proportional valve control amplifier, 17-electric controller, 18-input interface unit, 19-signal processing unit, 20-power amplification unit, 21-displacement transducer, 22-signal conditioning circuit, 23-signal conditioning unit.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but not as limitation of the present invention.
Embodiment: a kind of vertical crusher of grinding superfine powder, as shown in Figures 1 and 2, comprises mechanical mechanism and hydraulic mechanism, described mechanical mechanism comprises chassis 1, the top on chassis 1 is frame 2, and 1 the bottom on chassis is workbench 3, and workbench 3 is provided with crushing groove 4; The top of described frame 2 is provided with a hydraulic cylinder 5, and 5 external parts of hydraulic cylinder are provided with a cantilever 6, and the end of cantilever 6 is provided with a motor 7, and the output of motor 7 is provided with a main shaft 8, and the below of main shaft 8 is connected with pulverizes hub 9, and pulverizing hub 9 is placed in the top of crushing groove 4; Described hydraulic mechanism comprises oil pump 12, oil pump 12 is connected with a three position four-way electromagnetic valve 13 through P oil circuit, four paths of three position four-way electromagnetic valve are respectively P, T, A and B oil circuit, the A oil circuit of three position four-way electromagnetic valve 13 is connected with the two ends of hydraulic cylinder 14 respectively with B oil circuit, and the T oil circuit of three position four-way electromagnetic valve 13 is connected with fuel tank; On described B oil circuit, be connected with a proportional velocity regulating valve 15, proportional velocity regulating valve can be electro-hydraulic proportional throttle valve, proportional velocity regulating valve 15 is connected with a proportional valve control amplifier 16, and proportional valve control amplifier 16 is connected with an electric controller 17, and electric controller 17 is connected with motor 7 through circuit.Described electric controller 17 is current transformer.On described P oil circuit, be also connected with an overflow valve 10.Described proportional valve control amplifier changes by the electric machine phase current receiving, comparative example flow speed control valve provides specific currents again, thereby regulate the flow velocity of proportional velocity regulating valve, again the feed speed of hydraulic cylinder is adjusted, described proportional valve control amplifier can be by commercially available acquisition, and therefore concrete structure is not repeating at this.
As shown in Figure 3, described proportional valve control amplifier 16 comprises the input interface unit 18 being connected with electric controller (current transformer) 17, input interface unit 18 is connected with a signal processing unit 19, signal processing unit 19 connects a power amplification unit 20, power amplification unit can adopt conventional power amplifier, and power amplification unit 20 is connected with proportional velocity regulating valve 15; Described proportional velocity regulating valve 15 is provided with displacement transducer 21, displacement transducer 21 is connected with a signal conditioning circuit 22, signal conditioning circuit 22 is connected 19 with signal processing unit, signal conditioning circuit 22 also claims to measure amplifying circuit, it receives the displacement sensing signal of electromagnet on proportional velocity regulating valve, then feeds back to signal processing unit, regulates the speed of proportional velocity regulating valve, described signal conditioning circuit also can adopt conventional circuit, as shown in Figure 5.Between described signal processing unit 19 and power amplification unit 20, be also provided with signal conditioning unit 23.Described signal processing unit 19 is FPGA.As shown in Figure 4, described signal conditioning unit 23 comprises operational amplifier U
1, U
1negative input end through resistance R
0be connected with signal processing unit 19, U
1negative input end also through resistance R
1with capacitor C and U
1output be connected, U
1output be connected with power amplification unit 20.
Claims (6)
1. the vertical crusher of grinding superfine powder, it is characterized in that: comprise mechanical mechanism and hydraulic mechanism, described mechanical mechanism comprises chassis (1), the top of chassis (1) is frame (2), the bottom of (1) on chassis is workbench (3), and workbench (3) is provided with crushing groove (4); The top of described frame (2) is provided with a hydraulic cylinder (5), (5) external part of hydraulic cylinder is provided with a cantilever (6), the end of cantilever (6) is provided with a motor (7), the output of motor (7) is provided with a main shaft (8), the below of main shaft (8) is connected with pulverizes hub (9), and pulverizing hub (9) is placed in the top of crushing groove (4); Described hydraulic mechanism comprises oil pump (12), oil pump (12) is connected with a three position four-way electromagnetic valve (13) through P oil circuit, the A oil circuit of three position four-way electromagnetic valve (13) is connected with the two ends of hydraulic cylinder (14) respectively with B oil circuit, and the T oil circuit of three position four-way electromagnetic valve (13) is connected with fuel tank; On described B oil circuit, be connected with a proportional velocity regulating valve (15), proportional velocity regulating valve (15) is connected with a proportional valve control amplifier (16), proportional valve control amplifier (16) is connected with an electric controller (17), and electric controller (17) is connected with motor (7) through circuit; Described proportional valve control amplifier (16) comprises the input interface unit (18) being connected with electric controller (17), input interface unit (18) is connected with a signal processing unit (19), signal processing unit (19) connects a power amplification unit (20), and power amplification unit (20) is connected with proportional velocity regulating valve (15); Described proportional velocity regulating valve (15) is provided with displacement transducer (21), and displacement transducer (21) is connected with a signal conditioning circuit (22), signal conditioning circuit (22) be connected with signal processing unit (19).
2. the vertical crusher of grinding superfine powder according to claim 1, is characterized in that: described electric controller (17) is current transformer.
3. the vertical crusher of grinding superfine powder according to claim 2, is characterized in that: on described P oil circuit, be also connected with an overflow valve (10).
4. the vertical crusher of grinding superfine powder according to claim 1, is characterized in that: between described signal processing unit (19) and power amplification unit (20), be also provided with signal conditioning unit (23).
5. according to the vertical crusher of the grinding superfine powder described in claim 1 to 4 any one, it is characterized in that: described signal processing unit (19) is FPGA.
6. the vertical crusher of grinding superfine powder according to claim 4, it is characterized in that: described signal conditioning unit (23) comprises operational amplifier U1, the negative input end of U1 is connected with signal processing unit (19) through resistance R 0, the negative input end of U1 is also connected with the output of U1 with capacitor C through resistance R 1, and the output of U1 is connected with power amplification unit (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410106183.5A CN103861720B (en) | 2014-03-20 | 2014-03-20 | The vertical crusher of grinding superfine powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410106183.5A CN103861720B (en) | 2014-03-20 | 2014-03-20 | The vertical crusher of grinding superfine powder |
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| Publication Number | Publication Date |
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| CN103861720A true CN103861720A (en) | 2014-06-18 |
| CN103861720B CN103861720B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410106183.5A Expired - Fee Related CN103861720B (en) | 2014-03-20 | 2014-03-20 | The vertical crusher of grinding superfine powder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107185695A (en) * | 2017-06-05 | 2017-09-22 | 上海海洋大学 | Automate horseradish grinder |
| CN112745130A (en) * | 2020-12-30 | 2021-05-04 | 福建省佳美集团公司 | Formula of refractory ceramic and preparation method of ceramic product |
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| CN1032398A (en) * | 1988-11-11 | 1989-04-12 | 铁道部第一工程局机械筑路工程处 | Car for testing strength of earth with loading plate |
| CN201100282Y (en) * | 2007-10-11 | 2008-08-13 | 张波 | Micro-hydraulic dynamic unit for adjustable self-unload sealing device |
| CN201276122Y (en) * | 2008-09-03 | 2009-07-22 | 青岛四方车辆研究所有限公司 | Hydraulic system of multiple units tight-lock type hook dismounting equipment |
| CN201346479Y (en) * | 2008-12-12 | 2009-11-18 | 上海建设路桥机械设备有限公司 | Hydraulic adjustment safety system for wheel tooth type breaker |
| CN102734240A (en) * | 2012-06-26 | 2012-10-17 | 张家港市华舜机械制造有限公司 | Oil circuit system of main oil cylinder of tube bending machine |
| CN202590945U (en) * | 2012-05-24 | 2012-12-12 | 绿友机械集团股份有限公司 | Electric branch and leave crusher with automatic control system |
| CN203737380U (en) * | 2014-03-20 | 2014-07-30 | 湖州市千金宝云机械铸件有限公司 | Vertical grinder for ultrafine powder by grinding |
-
2014
- 2014-03-20 CN CN201410106183.5A patent/CN103861720B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032398A (en) * | 1988-11-11 | 1989-04-12 | 铁道部第一工程局机械筑路工程处 | Car for testing strength of earth with loading plate |
| CN201100282Y (en) * | 2007-10-11 | 2008-08-13 | 张波 | Micro-hydraulic dynamic unit for adjustable self-unload sealing device |
| CN201276122Y (en) * | 2008-09-03 | 2009-07-22 | 青岛四方车辆研究所有限公司 | Hydraulic system of multiple units tight-lock type hook dismounting equipment |
| CN201346479Y (en) * | 2008-12-12 | 2009-11-18 | 上海建设路桥机械设备有限公司 | Hydraulic adjustment safety system for wheel tooth type breaker |
| CN202590945U (en) * | 2012-05-24 | 2012-12-12 | 绿友机械集团股份有限公司 | Electric branch and leave crusher with automatic control system |
| CN102734240A (en) * | 2012-06-26 | 2012-10-17 | 张家港市华舜机械制造有限公司 | Oil circuit system of main oil cylinder of tube bending machine |
| CN203737380U (en) * | 2014-03-20 | 2014-07-30 | 湖州市千金宝云机械铸件有限公司 | Vertical grinder for ultrafine powder by grinding |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107185695A (en) * | 2017-06-05 | 2017-09-22 | 上海海洋大学 | Automate horseradish grinder |
| CN107185695B (en) * | 2017-06-05 | 2019-02-19 | 上海海洋大学 | Automate horseradish grinder |
| CN112745130A (en) * | 2020-12-30 | 2021-05-04 | 福建省佳美集团公司 | Formula of refractory ceramic and preparation method of ceramic product |
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| Publication number | Publication date |
|---|---|
| CN103861720B (en) | 2015-10-28 |
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Inventor after: Shen Wenbao Inventor after: Tong Xiaoyan Inventor before: Shen Wenbao |
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