CN104959195A - Tower mill system capable of loosening ore pulp and performing heavy load starting and operation method - Google Patents
Tower mill system capable of loosening ore pulp and performing heavy load starting and operation method Download PDFInfo
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- CN104959195A CN104959195A CN201510241325.3A CN201510241325A CN104959195A CN 104959195 A CN104959195 A CN 104959195A CN 201510241325 A CN201510241325 A CN 201510241325A CN 104959195 A CN104959195 A CN 104959195A
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- ore pulp
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- pulp
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/163—Stirring means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/1805—Monitoring devices for tumbling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
Abstract
The present invention discloses a tower mill system capable of loosening ore pulp and performing heavy load starting and an operation method, the tower mill system comprises a tower mill, an ore pulp storage tank (2) and a classifying device, the tower mill system also comprises an ore pulp assistant loosening system, the ore pulp assistant loosening system comprises an ore pulp assistant loosening bottom layer pipeline device and an ore pulp assistant loosening side pipeline device, the ore pulp assistant loosening bottom layer pipeline device comprises a bottom layer pipeline (b), a bottom layer solenoid valve (29) and a bottom layer nozzle (30), and the ore pulp assistant loosening side pipeline device is divided into an upper line and a lower line to be connected with the inside of a barrel (32). When the tower mill stops during working or stops due to a failure, in the case of no unloading of ore pulp and grinding media balls, main motor starting torque can be effectively reduced by starting of the ore pulp assistant loosening system to achieve tower mill heavy load starting. The entire tower mill system is simple in structure, reliable in work, and low in cost, can reduce the tower mill heavy load starting costs and labor intensity, and can be widely used in regrinding and fine grinding operations in black and non-ferrous metal, rare precious metal ore dressing plants.
Description
Technical field
The invention belongs to flotation engineering grinding attachment technical field, be specifically related to a kind of tower grinder system and heavy load starting method, factory can be selected to regrind and extensive use in fine grinding operation at black, non-ferrous metal, uncommon precious metal ore.
Background technology
Mineral Resources in China, particularly nonferrous metal resources are increasingly poor, thin, assorted, resource disseminated grain size thickness difference is comparatively large, and primary grinding is difficult to reach many metals and dissociates, and is difficult to effective sorting, and power consume is large, conventional bead mill can not meet to be regrinded and fine grinding requirement.Tower grinding machine is as fine grinding and Regrinding equipment, and compared with ball mill, the superiority of tower grinding machine is: efficient fine grinding, can prevent overground; Save energy consumption, ore milling product granularity is thinner, and energy-saving effect is more remarkable; Be easy to Operation and maintenance; Installation is simple, the cycle is short; Improve working environment, noise be low, vibrate little; Floor space is little; Equipment Foundations are simple, and capital cost province etc., obtain the approval of dresser author day by day.Current tower grinding machine is used widely at home and increasingly maximizes.
But, due to tower grinding machine be a kind of at right angle setting, fine grinding equipment with spiral agitator, after tower grinding machine maximizes, shutdown of short term all will be drained ore pulp, even milling medium all will will be drained, and not so again starting will initiating failure.As the external Large Towers grinding machine of Southwestern China Application in mining, stop for processing cyclone fault.After 13 hours, start tower grinding machine, but start unsuccessfully, external production firm messenger starts again, and starting current reaches rated current 1.716 times, does not start yet successfully, and after 25min, restart motor and to emerge black smoke, on inspection, motor stator and rotor, all burn; And the Large Towers grinding machine every platform price of mair motor used is up to more than 1,000,000 yuan, burn the property loss that mair motor causes due to heavy load starting huge.
In " application of tower grinding machine in iron ore concentrate fine grinding " literary composition that phase in " non-ferrous metal design " December the 4th in 2012 delivers, just disclose in detail produced problem in tower grinding machine production process, and point out: concentrate deposits for a long time and hardens and causes motor rotation blockage to be the immediate cause of motor damage in tower grinding machine; Start by force after stall, and start-up time is long, in the short time, the number of starts is too much one of remote cause damaging motor; Starting current is large, cause that the motor feels hot, overheated overtemperature is the remote cause two damaging motor.
The starting problem of Large Towers grinding machine is the key problem in technology during current tower grinding machine uses, this problem can not get solution execute-in-place can be caused to safeguard labour intensity is large, production cost increases, and can cause the unnecessary wasting of resources.Tower grinding machine traditional at present all adopts top to ore deposit, the mode that the overflow of product top is discharged, and ore pulp and milling medium mainly the object that frictional impact reaches mineral refinement occur in the middle and lower part of tower grinding machine.
Because ore pulp entrance and exit is all located at the top of equipment; once shut down; ore pulp and milling medium are just deposited on the middle and lower part of tower grinding machine; make to start anti-drag moment during the startup again of tower grinding machine to increase, start power consumption and intensity increasing, the most fragile mair motor; in order to security consideration; usual bottom ore discharge or make the residual minimizing of ore pulp by the mode of water displacement, restarts, even steel ball is also drained.Restarting these two kinds of modes is all adopt reduction tower grinding machine to start load to restart, and cannot ensure that ore drawing slurry, not vollyball do not realize heavy load starting.
For solving the problem, Chinese patent CN103406192A(201310368149.0) propose to heavily loaded vertical mill cylindrical shell inner bottom part pulsation input gases at high pressure the sediment of described cylinder body bottom is loosened, until described sediment loosen after under heavy condition, start described vertical mill.Though this method can solve some problems, a set of compressed-air system be installed.Add fixed assets expense, add Maintenance and Repair expense, this kind of method loosens in dynamics also very limited in addition.
Summary of the invention
Object of the present invention is exactly the problems referred to above of restarting middle existence for existing tower grinding machine, and provide a kind of and can loosen ore pulp and can the tower grinder system of heavy load starting, this tower grinder system can tower grinding machine not blowing, do not put ball state under start, thus realize reducing costs, reduce labour intensity, solving existing Large Towers grinding machine can not the problem of heavy load starting.
Another object of the present invention is to provide the method for operating of above-mentioned tower grinder system.
For solving the problem, we analyze structure and the start-up course of tower grinding machine, think the anti-drag moment that bottommost (on the crosspiece face) helical blade that the anti-drag moment of start-up course mainly occurs in the large agitating auger in tower grinding machine produces with the frictional resistance between the ore pulp between cylinder body bottom and medium ball and the anti-drag moment that king bolt side (side containing stock column between helical-blade side and helical-blade) produces with the frictional resistance of the material (ore pulp and medium ball) between cylindrical shell side.When hardening, also comprise the moment of resistance that two local shearing resistances produce.This anti-drag moment produced by frictional force (adhesion strength), the main Lower Half produced at cylindrical shell.Want not blowing, do not put medium ball, i.e. heavy load starting tower grinding machine, the method for most critical is the anti-drag moment that shear stress when reducing and reduce the frictional resistance of two above-mentioned main portions and the anti-drag moment that produces and harden produces.
For realizing above-mentioned purpose of the present invention, the present invention is a kind of can be loosened ore pulp and can the technical solution of tower grinder system of heavy load starting be:
The present invention is a kind of can loosen ore pulp and the tower grinder system of energy heavy load starting, containing tower grinding machine, ore pulp storage tank, grading plant; Composition, the structure of described tower grinding machine and the tower grinding machine that existing market is sold are substantially identical, namely mair motor, reductor, upper bracket, lower carriage, power transmission shaft, cylindrical shell is comprised, mair motor, reductor and power transmission shaft order are connected, the top of power transmission shaft is supported by upper bracket, lower carriage, the bottom of power transmission shaft is connected with the large agitating auger with helical blade, and large agitating auger is vertically mounted in cylindrical shell; Described grading plant adopts cyclone, and the coarse fodder efferent duct bottom cyclone is connected with tower grinding machine feeding mouth, and tower grinding machine feeding mouth is positioned at the upper lateral part of cylindrical shell, and the charging aperture of cyclone is connected by feed pipe for mortar and ore pulp storage tank.In order to ensure not discharging under tower grinding machine case of heavy load after a shutdown, do not unload ball and start and do not burn mair motor; the present invention also loosens system containing for the ore pulp power-assisted of tower grinding machine heavy load starting, described ore pulp power-assisted loosen system be loosen bottom piping installation by ore pulp power-assisted, ore pulp power-assisted loosens the combination of side culvert device and forms:
It is combined formed by bottom pipeline, the bottom magnetic valve be arranged on bottom pipeline, bottom nozzle sets that described ore pulp power-assisted loosens bottom piping installation; Bottom nozzle sets arranges 3-8 bar branch pipeline, every bar branch pipeline enters into the cavity large agitating auger helical blade bottom and cylinder bottom plate through cylinder bottom plate, every bar branch pipeline is provided with bottom line check valve, and the exit of every bar branch pipeline is bottom nozzle.
Described ore pulp power-assisted loosens side culvert device and is connected with the Lower Half of tower grinding mill barrel, and a point upper and lower two-way is linked into inner barrel; Lower road is connected and composed by pipeline by lower floor's magnetic valve, underlying nozzle group, underlying nozzle group is arranged 2-4 bar branch pipeline, every bar branch pipeline is provided with check valve, the exit of every bar branch pipeline is cylindrical shell nozzle, cylindrical shell nozzle is oblique enters into annular cylindrical space large agitating auger and barrel through cylindrical shell, and the rotation direction of jet angle is consistent with the direction of rotation of mair motor; Set out on a journey is connected and composed by pipeline by upper strata magnetic valve, upper strata nozzle sets, upper strata nozzle sets is also arranged 2-4 bar branch pipeline, every bar branch pipeline is provided with check valve, the exit of every bar branch pipeline is cylindrical shell nozzle, cylindrical shell nozzle is oblique enters into annular cylindrical space large agitating auger and barrel through cylindrical shell, and the rotation direction of jet angle is that the direction of rotation of same mair motor is consistent.
Described ore pulp power-assisted is connected with side direction main pipe rail after loosening the upper and lower two-way parallel connection of side culvert device, and side direction main pipe rail is connected with loosening main line; Described bottom pipeline is also connected with loosening main line, and loosen main line and is communicated with the middle and upper part of ore pulp storage tank, the desirable height of its link position is: loosening main line is in 2/3 At The Height connection of ore pulp storage tank.
It is good that bottom nozzle sets arranges 8 branch pipeline, and wherein 4 branch pipeline are positioned at same diameter R
1concentric circles on, other 4 branch pipeline are positioned at same diameter R
2concentric circles on, and interval, arranged crosswise; The internal diameter of setting cylindrical shell is R, then R> R
2> R
1.
For preventing the wearing and tearing of bottom nozzle, described cylinder bottom plate is provided with conical bore, described bottom nozzle contracting is in the conical bore of cylinder bottom plate.During normal work, meson club enters in conical bore, protection bottom nozzle.
Loosening main line is provided with power-assisted and loosens pipeline Pulp pump, power-assisted loosen pipeline Pulp pump on pipeline, be respectively equipped with that power-assisted loosens pipeline Pulp pump import manual ball valve, power-assisted loosens pipeline Pulp pump outlet manual ball valve.Described ore pulp storage tank is connected with slip input pipe, clear water pipe respectively; Feed pipe for mortar is provided with feed pipe for mortar Pulp pump, feed pipe for mortar Pulp pump be respectively equipped with on pipeline feed pipe for mortar Pulp pump import manual ball valve, feed pipe for mortar Pulp pump outlet manual ball valve.
The present invention is in former tower grinding machine pipe-line system, add a set of ore pulp power-assisted and loosen system, ore pulp power-assisted loosens bottom piping installation and utilizes high pressure ore pulp to go helical blade bottom loose tower grinding machine to make it to harden with the ore pulp between cylinder bottom plate and milling medium, reduces the anti-drag moment caused because of frictional resistance.Ore pulp vertically upward sprays from tower grinding machine base plate, flows to tower grinding machine overflow segment from tower grinding mill barrel periphery.Ore pulp power-assisted loosens the Lower Half that side culvert device is connected to tower grinding mill barrel, divide upper and lower two-layer oblique access inner barrel, spray in annular cylindrical space between large agitating auger and barrel, object is ore pulp in loose annular cylindrical space and ore grinding meson, anti-drag moment when making it to harden thus reduce the startup that this section cause by frictional resistance.The rotation direction of jet angle is that the direction of rotation of same mair motor is consistent in addition, and then the turning moment of ore pulp in cylindrical shell serves power-assisted effect when mair motor starts.What will say in addition is, the ore pulp loosened draws from 2/3 of ore pulp storage tank height, learn from working practice, pulp density in ore pulp storage tank more than 2/3 height is very low, substantially close to the concentration of clear water, so the ore pulp injecting tower grinding machine, also serves dilution by the pulp density of porous spot at loose relevant portion simultaneously, decrease the possibility hardened.This kind of starting method is after the orderly shutdown of tower grinding machine or scram, automatically devote oneself to work, by the working procedure of setting in advance, running and parking hocket, its time interval does not harden to be limited, usual down time is not greater than 40 minutes, as long term stop all must be put the material in machine only.
The present invention is a kind of can be loosened ore pulp and can the method for operating of tower grinder system of heavy load starting be: when after mair motor stall, close slip input pipe, feed pipe for mortar Pulp pump import manual ball valve, feed pipe for mortar Pulp pump, feed pipe for mortar Pulp pump outlet manual ball valve immediately, stop feed in cylindrical shell, before in cylindrical shell, ore pulp and milling medium ball do not harden, open ore pulp power-assisted and loosen system to inject high pressure flow of slurry in cylindrical shell, that is: clear water pipe is opened, injected clear water in ore pulp storage tank, when clear water height exceed power-assisted loosen the water suction of pipeline Pulp pump import manual ball valve high more than 500mm time, order is opened power-assisted and is loosened pipeline Pulp pump import manual ball valve, power-assisted loosens pipeline Pulp pump, power-assisted loosens pipeline Pulp pump outlet manual ball valve to side culvert, bottom pipeline supplies water, bottom pipeline is by a road, side culvert divides two tunnels, supply water under high pressure with ore pulp in loosening cylindrical shell and milling medium ball in totally three road direction tower grinding machines.
In addition, the present invention also provides a kind of can loosen ore pulp and the method for operating of the tower grinder system of energy heavy load starting, concrete operation method is: when after mair motor stall, close slip input pipe, feed pipe for mortar Pulp pump import manual ball valve, feed pipe for mortar Pulp pump, feed pipe for mortar Pulp pump outlet manual ball valve immediately, stop feed in cylindrical shell, before in cylindrical shell, ore pulp and milling medium ball do not harden, open ore pulp power-assisted and loosen system to inject high pressure flow of slurry in cylindrical shell, that is: clear water pipe is opened, injected clear water in ore pulp storage tank, when clear water height exceed power-assisted loosen the water suction of pipeline Pulp pump import manual ball valve high more than 500mm time, order is opened power-assisted and is loosened pipeline Pulp pump import manual ball valve, power-assisted loosens pipeline Pulp pump, power-assisted loosens pipeline Pulp pump outlet manual ball valve to side culvert, bottom pipeline supplies water, bottom pipeline is by a road, side culvert divides two tunnels, supply water under high pressure with ore pulp in loosening cylindrical shell and milling medium ball in totally three road direction tower grinding machines.
The present invention is a kind of can loosen ore pulp and can the tower grinder system of heavy load starting and method of operating adopt above technical scheme after the beneficial effect that brings be: after the work parking of tower grinding machine or scram, under the condition of not emptying ore pulp and milling medium ball, system is loosened by starting ore pulp power-assisted, can loosen and dilute the sediment be deposited on bottom tower grinding mill barrel, thus effectively reduce mair motor staring torque, realize the heavy load starting of tower grinding machine.The method is simple to operate, can realize automation mechanized operation, and whole system structure is simple, and reliable operation, cost is low, can reduce heavy load starting cost and the labour intensity of tower grinding machine.
Accompanying drawing explanation
To be that the present invention is a kind of can loosen ore pulp and can the tower grinder system structural nexus schematic diagram of heavy load starting to Fig. 1;
Fig. 2 be in Fig. 1 B-B to diagram;
Fig. 3 is the enlarged diagram at the label C place in Fig. 1;
Fig. 4 is that A-A in Fig. 1 is to diagram;
Fig. 5 is label D place enlarged diagram in Fig. 4;
Fig. 6 is that the ore pulp power-assisted that the present invention adopts loosens piping installation schematic diagram.
Reference numeral is: 1-slip input pipe, 2-ore pulp storage tank, 3-feed pipe for mortar Pulp pump import manual ball valve, 4-feed pipe for mortar Pulp pump, 5-feed pipe for mortar Pulp pump outlet manual ball valve, 6-feed pipe for mortar, 7-cyclone, 8-fines efferent duct, 9-coarse fodder efferent duct, 10-tower grinding machine feeding mouth, 11-mair motor, 12-reductor, 13-upper bracket, 14-lower carriage, 15-overflow segment, 16-overfall, 17-helical blade, 18-annular cylindrical space, 19-upper strata nozzle sets, 20-upper strata magnetic valve, 21-underlying nozzle group, 22-lower floor magnetic valve, 23-loosens main line, 24-power-assisted loosens pipeline Pulp pump outlet manual ball valve, 25-power-assisted loosens pipeline Pulp pump, 26-power-assisted loosens pipeline Pulp pump import manual ball valve, 27-overflow pipe, 28-clear water pipe, 29-bottom magnetic valve, 30-bottom nozzle sets, 31-cylinder bottom plate, 32-cylindrical shell, 33-bottom nozzle, 34-bottom line check valve, 35-cylindrical shell nozzle, 36-check valve, 37-manual ball valve, 38-access door, 39-grid liner plate, the large agitating auger of 40-, 41-power transmission shaft, 42-conical bore, a-side direction main pipe rail, b-bottom pipeline.
Detailed description of the invention
For further describing the present invention, ore pulp can be loosened below in conjunction with drawings and Examples to the present invention is a kind of and can the tower grinder system of heavy load starting and method of operating be described in further details.
The present invention is as shown in Figure 1 a kind of can be loosened ore pulp and can the tower grinder system structural nexus schematic diagram of heavy load starting find out, the present invention is a kind of can loosen ore pulp and can the tower grinder system of heavy load starting, containing tower grinding machine, ore pulp storage tank 2, grading plant; Tower grinding machine comprises mair motor 11, reductor 12, upper bracket 13, lower carriage 14, power transmission shaft 41, cylindrical shell 32, and mair motor 11, reductor 12 are connected with power transmission shaft 41 order, and the top of power transmission shaft 41 is supported by upper bracket 13, lower carriage 14.Described grading plant adopts cyclone 7, and the coarse fodder efferent duct 9 bottom cyclone 7 is connected with tower grinding machine feeding mouth 10, and tower grinding machine feeding mouth 10 is positioned at the upper lateral part of cylindrical shell 32, and the charging aperture of cyclone 7 is connected by feed pipe for mortar 6 and ore pulp storage tank 2.After mair motor 11 is energized and starts, reductor 12 and the power transmission shaft 41 be installed in upper bracket 13, lower carriage 14 is driven to rotate.Power transmission shaft 41 to be connected with large agitating auger 40 by screw and to be with it to rotate, and large agitating auger 40 is welded with helical blade 17 and is vertically mounted in cylindrical shell 32, when rotating, helical blade 17 can stir ore pulp in cylindrical shell 32 and ore grinding meson ball, the contact internal walls of ore pulp and milling medium ball and cylindrical shell 32, under the influence of centrifugal force, frictional force can be produced, this frictional force can produce frictional resistance moment when mair motor 11 rotates, this moment of resistance is mair motor 11 one of maximum resistance square when starting, during as hardened in the annular cylindrical space 18 between large agitating auger 40 and barrel when ore pulp and meson ball, also to overcome when mair motor 11 starts produce owing to hardening cut the moment of resistance, this moment is huge, have this moment to there is mair motor 11 can not start up.In addition at large agitating auger 40 with between helical blade bottom 17 and cylinder bottom plate 31, frictional resistance moment can be produced equally, produce when hardening and cut the moment of resistance, this local anti-drag moment produced also is huge, also counteracts that the startup of motor, in addition also will overcome the friction in mechanical each portion during electric motor starting, start inertia resistance etc., these moments of resistance are relatively little.
The ore pulp power-assisted that the present invention has set up for tower grinding machine heavy load starting loosens system, mainly for how to reduce or reduce mair motor 11 staring torque, not blowing, do not put ball condition under realize heavy load starting.
The ore pulp power-assisted that the present invention as shown in Figure 6 adopts loosens piping installation schematic diagram and composition graphs 1, Fig. 2, Fig. 3 find out, described ore pulp power-assisted loosen system be loosen bottom piping installation by ore pulp power-assisted, ore pulp power-assisted loosens the combination of side culvert device and forms.Wherein ore pulp power-assisted loosens bottom piping installation is combined formed by bottom pipeline b, the bottom magnetic valve 29 be arranged on bottom pipeline b, bottom nozzle sets 30; Bottom nozzle sets 30 arranges 8 branch pipeline, every bar branch pipeline enters into the cavity large agitating auger 40 helical blade 17 bottom and cylinder bottom plate 31 through cylinder bottom plate 31, every bar branch pipeline is provided with bottom line check valve 34, and the exit of every bar branch pipeline is bottom nozzle 33.
The present invention is as shown in Figure 1 a kind of can be loosened ore pulp and can the tower grinder system structural nexus schematic diagram of heavy load starting composition graphs 4, Fig. 5, Fig. 6 find out, described ore pulp power-assisted loosens side culvert device and is connected with the Lower Half of tower grinding mill barrel, and it is inner that a point upper and lower two-way is linked into cylindrical shell 32.Lower road is connected and composed by pipeline by lower floor's magnetic valve 22, underlying nozzle group 21, underlying nozzle group 21 is arranged 4 branch pipeline, every bar branch pipeline is provided with check valve 36, the exit of every bar branch pipeline is cylindrical shell nozzle 35, and cylindrical shell nozzle 35 is oblique enters into annular cylindrical space 18 large agitating auger 40 and barrel through cylindrical shell 32.Cylindrical shell nozzle 35 is close to grid liner plate 39, radial skew 20 °, axially be inclined upwardly the firing angle of 60 °, spray in annular cylindrical space 18 between large agitating auger 40 and barrel, its objective is the ore pulp in this annular cylindrical space 18 loose and ore grinding meson ball, making it can not sedimentation and hardening, thus the anti-drag moment reducing by this section of frictional resistance and cause.The rotation direction of jet angle is consistent with the direction of rotation of mair motor 11, and its inject high pressure current rotate in annular cylindrical space 18, and the turning moment that its High-Pressure Water produces serves power-assisted effect when mair motor 11 starts.The ore pulp loosened is also had to be draw from 2/3 At The Height (Fig. 1 H4 height) of ore pulp storage tank 2 and come, learn from working practice, pulp density on this height of ore pulp storage tank 2 is very low, basic close to clear water concentration, so inject the ore pulp of tower grinding machine, also serve dilution by the pulp density of porous spot, decrease the possibility hardened.Set out on a journey is connected and composed by pipeline by upper strata magnetic valve 20, upper strata nozzle sets 19, upper strata nozzle sets 19 is also arranged 2-4 bar branch pipeline, every bar branch pipeline is provided with check valve 36, the exit of every bar branch pipeline is cylindrical shell nozzle 35, cylindrical shell nozzle 35 is oblique enters into annular cylindrical space 18 large agitating auger 40 and barrel through cylindrical shell 32, the rotation direction of jet angle is that the direction of rotation of same mair motor 11 is consistent, and its overall process is identical with lower road, is that installation position is at H2 elevation place.
The present invention is as shown in Figure 1 a kind of can be loosened ore pulp and can the tower grinder system structural nexus schematic diagram of heavy load starting find out, described ore pulp power-assisted is connected with side direction main pipe rail a after loosening the upper and lower two-way parallel connection of side culvert device, and side direction main pipe rail a is connected with loosening main line 23; Described bottom pipeline b is also connected with loosening main line 23, loosens main line 23 and is communicated with the middle and upper part H4 At The Height of ore pulp storage tank 2.Manual ball valve 37 is also provided with at the lower nozzle place of side culvert a, bottom pipeline b and loosening main line 23 junction.Loosening main line 23 is provided with power-assisted and loosens pipeline Pulp pump 25, power-assisted loosen pipeline Pulp pump 25 on pipeline, be respectively equipped with that power-assisted loosens pipeline Pulp pump import manual ball valve 26, power-assisted loosens pipeline Pulp pump outlet manual ball valve 24.Described ore pulp storage tank 2 is connected with slip input pipe 1, clear water pipe 28 respectively; Feed pipe for mortar 6 is provided with feed pipe for mortar Pulp pump 4, feed pipe for mortar Pulp pump 4 be respectively equipped with on pipeline feed pipe for mortar Pulp pump import manual ball valve 3, feed pipe for mortar Pulp pump outlet manual ball valve 5.
In Fig. 1 as shown in Figure 2 B-B to diagram and composition graphs 6 find out; in order to prevent the wearing and tearing of bottom nozzle 33; described cylinder bottom plate 31 is provided with conical bore 42; described bottom nozzle 33 contracts in the conical bore 42 of cylinder bottom plate 31; during normal work; meson club enters in conical bore 42, protection nozzle.Bottom nozzle sets 30 arranges 8 branch pipeline, and wherein 4 branch pipeline are positioned at same diameter R
1concentric circles on, other 4 branch pipeline are positioned at same diameter R
2concentric circles on, and interval, arranged crosswise; The internal diameter of setting cylindrical shell 32 is R, then R> R
2> R
1.
In normal ore grinding, the operating current of motor is specified electricity, about 70 ~ 80%, and starting current is more than 1.7 times of rated current, causes the significant wastage of motor installation amount.
In normal ore grinding, entering ore grinding slurry enters in ore pulp storage tank 2 by slip input pipe 1, the higher ore pulp of bottom concentration in ore pulp storage tank 2 is through feed pipe for mortar Pulp pump import manual ball valve 3, feed pipe for mortar Pulp pump 4, feed pipe for mortar Pulp pump outlet manual ball valve 5, feed pipe for mortar 6 enters in cyclone 7, through cyclone classification, thin ore particle is discharged by the particulate efferent duct 8 at cyclone 7 top, and thicker ore particle is through coarse fodder efferent duct 9, enter in cylindrical shell 32 through tower grinding machine feeding mouth 10 and carry out fine grinding, the fines worn into floats to overflow segment 15, through overfall 16, overflow pipe 27, get back to again in ore pulp storage tank 2, again through above-mentioned circulation, this fines can be discharged from fines efferent duct 8 after cyclone 7 classification.The circulation of regrinding gone round and begun again, the material entering mill the most at last is all finely ground into finished product.
Because material is in motion in normal ore grinding, material is less with wall friction power, and mair motor 11 resistance is less.But after tower grinding machine stops, the ore pulp in cylinder and the also stop motion of milling medium ball, the time has been grown, in ore pulp, ore in sand form grain and milling medium ball are under gravity, the bottom of cylindrical shell 32 can be sunk to, increase cylindrical shell 32 bottom weight concentration, thus also increase the coefficient of friction of cylindrical shell 32 bottom material with cylindrical shell, mair motor 11 increases frictional resistance moment when starting, time as stopped is long again, and ore pulp and medium ball can produce and harden, when mair motor 11 starts, anti-drag moment can be larger, even cannot start.
For preventing material sinking and hardening after mair motor 11 stall, the present invention is a kind of can be loosened ore pulp and can the method for operating of tower grinder system of heavy load starting be: when after mair motor 11 stall, close slip input pipe 1, feed pipe for mortar Pulp pump import manual ball valve 3, feed pipe for mortar Pulp pump 4, feed pipe for mortar Pulp pump outlet manual ball valve 5 immediately, stop feed in cylindrical shell 32, before in cylindrical shell 32, ore pulp and milling medium ball do not harden, open ore pulp power-assisted and loosen system to inject high pressure flow of slurry in cylindrical shell 32, that is: clear water pipe 28 is opened, injected clear water in ore pulp storage tank 2, when clear water height exceed power-assisted loosen the water suction of pipeline Pulp pump import manual ball valve 26 high more than 500mm time, order is opened power-assisted and is loosened pipeline Pulp pump import manual ball valve 26, power-assisted loosens pipeline Pulp pump 25, power-assisted loosens pipeline Pulp pump outlet manual ball valve 24 to side culvert a, bottom pipeline b supplies water, bottom pipeline b is by a road, side culvert a divides two tunnels, supply water under high pressure with ore pulp and milling medium ball in loosening cylindrical shell 32 in totally three road direction tower grinding machines.
Loosen in system in above-mentioned ore pulp power-assisted, supply water and all controlled by electromagnetic valve in each road, its control system is included in tower grinding machine general control system.
Claims (8)
1. can loosen ore pulp and a tower grinder system for energy heavy load starting, containing tower grinding machine, ore pulp storage tank (2), grading plant; Described tower grinding machine comprises mair motor (11), reductor (12), upper bracket (13), lower carriage (14), power transmission shaft (41), cylindrical shell (32), mair motor (11), reductor (12) are connected with power transmission shaft (41) order, the top of power transmission shaft (41) is supported by upper bracket (13), lower carriage (14), the bottom of power transmission shaft (41) is connected with the large agitating auger (40) with helical blade (17), and large agitating auger (40) is vertically mounted in cylindrical shell (32); Described grading plant adopts cyclone (7), the coarse fodder efferent duct (9) of cyclone (7) bottom is connected with tower grinding machine feeding mouth (10), tower grinding machine feeding mouth (10) is positioned at the upper lateral part of cylindrical shell (32), and the charging aperture of cyclone (7) is connected by feed pipe for mortar (6) and ore pulp storage tank (2); It is characterized in that: it also loosens system containing for the ore pulp power-assisted of tower grinding machine heavy load starting, described ore pulp power-assisted loosen system be loosen bottom piping installation by ore pulp power-assisted, ore pulp power-assisted loosens the combination of side culvert device and forms:
It is combined formed by bottom pipeline (b), the bottom magnetic valve (29) be arranged on bottom pipeline (b), bottom nozzle sets (30) that described ore pulp power-assisted loosens bottom piping installation; Bottom nozzle sets (30) arranges 3-8 bar branch pipeline, every bar branch pipeline enters into the cavity large agitating auger (40) helical blade bottom (17) and cylinder bottom plate (31) through cylinder bottom plate (31), every bar branch pipeline is provided with bottom line check valve (34), and the exit of every bar branch pipeline is bottom nozzle (33);
Described ore pulp power-assisted loosens side culvert device and is connected with the Lower Half of tower grinding mill barrel, and it is inner that a point upper and lower two-way is linked into cylindrical shell (32); Lower road is connected and composed by pipeline by lower floor's magnetic valve (22), underlying nozzle group (21), underlying nozzle group (21) is arranged 2-4 bar branch pipeline, every bar branch pipeline is provided with check valve (36), the exit of every bar branch pipeline is cylindrical shell nozzle (35), cylindrical shell nozzle (35) is oblique enters into annular cylindrical space (18) large agitating auger (40) and barrel through cylindrical shell (32), and the rotation direction of jet angle is consistent with the direction of rotation of mair motor (11); Set out on a journey is connected and composed by pipeline by upper strata magnetic valve (20), upper strata nozzle sets (19), upper strata nozzle sets (19) is also arranged 2-4 bar branch pipeline, every bar branch pipeline is provided with check valve (36), the exit of every bar branch pipeline is cylindrical shell nozzle (35), cylindrical shell nozzle (35) is oblique enters into annular cylindrical space (18) large agitating auger (40) and barrel through cylindrical shell (32), and the direction of rotation of the same mair motor of rotation direction (11) of jet angle is consistent.
2. a kind ofly as claimed in claim 1 can loosen ore pulp and can the tower grinder system of heavy load starting, it is characterized in that: described ore pulp power-assisted is connected with side direction main pipe rail (a) after loosening the upper and lower two-way parallel connection of side culvert device, and side direction main pipe rail (a) is connected with loosening main line (23); Described bottom pipeline (b) is also connected with loosening main line (23), loosens main line (23) and is communicated with the middle and upper part of ore pulp storage tank (2).
3. a kind ofly as claimed in claim 2 can loosen ore pulp and can the tower grinder system of heavy load starting, it is characterized in that: described loosening main line (23) is connected with 2/3 At The Height of ore pulp storage tank (2).
4. a kind ofly as claimed in claim 3 can loosen ore pulp and can the tower grinder system of heavy load starting, it is characterized in that: in bottom nozzle sets (30), arrange 8 branch pipeline, wherein 4 branch pipeline are positioned at same diameter R
1concentric circles on, other 4 branch pipeline are positioned at same diameter R
2concentric circles on, and interval, arranged crosswise; The internal diameter of setting cylindrical shell (32) is R, then R> R
2> R
1.
5. a kind of as described in claim 2,3 or 4 can loosen ore pulp and can the tower grinder system of heavy load starting, it is characterized in that: on described cylinder bottom plate (31), be provided with conical bore (42), described bottom nozzle (33) contracting is in the conical bore (42) of cylinder bottom plate (31).
6. a kind ofly as claimed in claim 5 can loosen ore pulp and can the tower grinder system of heavy load starting, it is characterized in that: on loosening main line (23), be provided with power-assisted loosen pipeline Pulp pump (25), power-assisted loosen pipeline Pulp pump (25) on pipeline, be respectively equipped with that power-assisted loosens pipeline Pulp pump import manual ball valve (26), power-assisted loosens pipeline Pulp pump outlet manual ball valve (24).
7. a kind ofly as claimed in claim 6 can loosen ore pulp and can the tower grinder system of heavy load starting, it is characterized in that: described ore pulp storage tank (2) is connected with slip input pipe (1), clear water pipe (28) respectively; Feed pipe for mortar (6) is provided with feed pipe for mortar Pulp pump (4), feed pipe for mortar Pulp pump (4) be respectively equipped with on pipeline feed pipe for mortar Pulp pump import manual ball valve (3), feed pipe for mortar Pulp pump outlet manual ball valve (5).
8. a kind ofly as claimed in claim 7 can loosen ore pulp and can the method for operating of tower grinder system of heavy load starting, it is characterized in that: when after mair motor (11) stall, close slip input pipe (1), feed pipe for mortar Pulp pump import manual ball valve (3), feed pipe for mortar Pulp pump (4), feed pipe for mortar Pulp pump outlet manual ball valve (5) immediately, stop to cylindrical shell (32) interior feed, before in cylindrical shell (32), ore pulp and milling medium ball do not harden, open ore pulp power-assisted and loosen system to the interior inject high pressure flow of slurry of cylindrical shell (32), that is: clear water pipe (28) is opened, to ore pulp storage tank (2) interior injected clear water, when clear water height exceed power-assisted loosen the water suction of pipeline Pulp pump import manual ball valve (26) high more than 500mm time, order is opened power-assisted and is loosened pipeline Pulp pump import manual ball valve (26), power-assisted loosens pipeline Pulp pump (25), power-assisted loosens pipeline Pulp pump outlet manual ball valve (24) to side culvert (a), bottom pipeline (b) supplies water, bottom pipeline (b) is by a road, side culvert (a) Fen Erlu, supply water under high pressure with loosening cylindrical shell (32) interior ore pulp and milling medium ball in totally three road direction tower grinding machines.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241325.3A CN104959195B (en) | 2015-05-13 | 2015-05-13 | Tower mill system capable of loosening ore pulp and performing heavy load starting and operation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241325.3A CN104959195B (en) | 2015-05-13 | 2015-05-13 | Tower mill system capable of loosening ore pulp and performing heavy load starting and operation method |
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| CN104959195A true CN104959195A (en) | 2015-10-07 |
| CN104959195B CN104959195B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN105921225A (en) * | 2016-04-26 | 2016-09-07 | 株洲市欧华化工机械有限公司 | Sand draining method used after emergency stop of horizontal sand mill and large horizontal sand mill |
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| CN104959195B (en) | 2017-04-12 |
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