CN202316090U - Electric control multi-stage classifier - Google Patents
Electric control multi-stage classifier Download PDFInfo
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- CN202316090U CN202316090U CN2011204487456U CN201120448745U CN202316090U CN 202316090 U CN202316090 U CN 202316090U CN 2011204487456 U CN2011204487456 U CN 2011204487456U CN 201120448745 U CN201120448745 U CN 201120448745U CN 202316090 U CN202316090 U CN 202316090U
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- grading room
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Abstract
The utility model relates to ore-dressing equipment, in particular to an electric control multi-stage classifier, which comprises a coarse-grained classifying chamber and a medium-grained classifying chamber; one or a plurality of air inlet guns are arranged at the bottom of the coarse-grained classifying chamber; a distributing plate for water flow dispersion is arranged below a feeding pipe in the coarse-grained classifying chamber; a gap is formed between the exterior of the distributing plate and the inner wall of the coarse-grained classifying chamber; the medium-grained classifying chamber surrounds the outer part of a cylinder of the coarse-grained classifying chamber; a medium and fine-grained transfer chamber is arranged between the medium-grained classifying chamber and the coarse-grained classifying chamber; a sieve mesh capable of vertically moving is transversely installed in the medium-grained classifying chamber and is placed on the lower side of a discharging port; one or a plurality of water inlet pipes are arranged below the sieve mesh; a medium-grained ore exhaust valve is arranged at the bottom of the medium-grained classifying chamber; a fine-grained overflow tank is surrounded outside the medium-grained classifying chamber; and a superfine-grained foam overflow tank is arranged on the top surface of the coarse-grained classifying chamber. Through the electric control multi-stage classifier and a control system, four products can be classified through one-time classifying, and the handling capacity is large.
Description
Technical field
The utility model relates to a kind of preparation equipment, is specially a kind of grader.
Background technology
Multistage grader is made into closed cycle branch journey shunting ore deposit sand with ball mill in the ore dressing plant; Or be used in and come classification ore in sand form and thin mud in the gravity mill; And in the metal beneficiation flowsheet ore pulp is carried out grading, and operations such as desliming, dehydration in the washup operation.That this equipment has is simple in structure, energy-conservation, classification efficiency is high, characteristics such as graded product many (raw ore can divide four kinds of products), reliable operation, easy to operate, automaticity height.
The existing domestic equipment that is used for grading at present has spiral classifier, four Room hydraulic classifiers etc.Spiral classifier have treating capacity big with characteristics such as grading is obvious, but its scalping can only divide two kinds of products and partition size freely not to adjust, and defective such as causes using more than the platform number; Four Room hydraulic classiciation levels once classification just can be told four kinds of product characteristic, but the defective of every treating capacity little (10 tons/hour) is arranged.
The utility model content
The purpose of the utility model is, to the deficiency of prior art, a kind of automatically controlled multistage grader is provided, and scalping can be told four kinds of products, and treating capacity is big.
The technical scheme of the utility model is: a kind of automatically controlled multistage grader; Comprise coarse grain grading room and middle grade grading room, coarse grain grading room top is cylinder, and the bottom is a cone; Coarse grain grading room top is provided with feed pipe; The bottom is provided with coarse grain ore discharge valve, and is provided with water inlet pipe bottom the coarse grain grading room, and said coarse grain grading room bottom is provided with one or more air inlet rifles; Feed pipe below in the coarse grain grading room is provided with the distribution plate that disperses current, and is gapped between distribution plate outside and the coarse grain grading room inwall; It is outside that middle grade grading room is looped around coarse grain grading room cylinder; Fine fraction transporting room in being provided with between middle grade grading room and the coarse grain grading room; And fine fraction overflow ducts in being provided with between coarse grain grading room and the middle fine fraction transporting room, middle fine fraction transporting room downside has the discharge gate that is communicated with middle grade grading room; Screen cloth moving up and down laterally is installed in the middle grade grading room, and screen cloth places the discharge gate downside, under screen cloth, is provided with one or more water inlet pipes, and middle grade grading room bottom is provided with middle grain ore discharge valve; Middle grade grading room outer most surrounding fine fraction overflow launder, and be provided with the fine fraction overflow ducts between middle grade grading room and the fine fraction overflow launder, coarse grain grading room end face is provided with ultra-fine grade froth overflow channel.
Be provided with the liquid level electric apparatus control apparatus in the grade grading room in said; This liquid level electric apparatus control apparatus comprises inductive head, hydraulic electric push-rod assembly and controller; The output of inductive head is connected with controller; The output of controller is connected with the hydraulic electric push-rod assembly, and the push rod in the hydraulic electric push-rod assembly links with the middle grain ore discharge valve that is installed in middle grade grading room bottom.
Ore pulp vertically enters on the distribution plate of feed pipe below through the middle part of feed pipe by the coarse grain grading room; Ascending current and bubble get into the coarse grain grading room through the belt slit between distribution plate and the coarse grain grading room inwall; Wherein ultra-fine grade ore deposit contacts with bubble, attached to bubble surface, along with the rising of great amount of bubbles; Form foam, directly arrive the outer classification of accomplishing ultra-fine grade of equipment through ultra-fine grade froth overflow channel.
At the coarse grain grading room; Ascending current gets into the coarse grain grading room through the belt slit between distribution plate and the coarse grain grading room inwall; Since in fine-graded sinking speed less than the speed of ascending current, fine fraction transporting room during the top through the coarse grain grading room gets into through middle fine fraction overflow ducts with the form of overflow; And the sinking speed of coarse fraction material gets into the coarse grain ore discharge valve that is positioned at coarse grain grading room bottom through above-mentioned belt slit to discharge greater than the speed of ascending current, accomplishes the coarse fraction classification.
The middle fine particle stage material of fine fraction transporting room is through fine fraction grading room in the discharge gate entering of downside in the entering; The grade of middle fine fraction grading room utilizes fluidization that particulate and middle grade mineral are carried out classification; Ascending water is through the bottom of the even branch of the screen cloth that is horizontally installed in discharge gate downside grain grading room in whole; Guarantee to form uniform and stable laminar fluidized bed, realize classification accurately.Fine mineral is centered around in the fine fraction annular overflow trough outside the fine grading chamber through the entering of fine fraction overflow ducts under the effect of current and drains.The bottom of grain grading room during middle grain mineral are deposited to is through equally distributed a plurality of valves discharge along the circumferential direction.
The open and close and the discharge velocity of coarse grain and two all discharge valves of grading room of middle grain are all controlled and are regulated through the pulp density on-line measurement.Under the situation of known on-the-spot fluid load, through changing the granularity of the fluidized bed height and the rising water yield, rising bubble amount scalable coarse grain, middle grade, particulate, ultra-fine grain product (also being coarse grain grading room sand setting, fine grading chamber sand setting, final overflow, ultra-fine grade).The concentration of each classification product and flow distribution also can be regulated in certain scope according to arts demand in addition.This equipment can also be according to parameters such as feed preparation unit size, mineral proportion and pulp densities; Adopt difference and the adjustable rising water yield, rising bubble amount to select for use different bottom, fine grading chamber screen clothes simultaneously, can guarantee the even fluidisation and accurate classification of mineral grain with adjustment screen cloth pressure reduction up and down.
The liquid level electric apparatus control apparatus is made up of inductive head, hydraulic electric push rod, controller etc.Along with material enters middle grade grading room continuously; Then middle grade grading room liquid level rises, and when liquid level rose to setting height, inductive head arrived controller through the line of induction to signal; Controller output signal is connected the switch in the hydraulic electric push-rod assembly; Make push rod in the hydraulic electric push-rod assembly rectilinear motion that makes progress, grade ore discharge valve in mentioning is accomplished ore discharge; Along with discharge in middle grade ore deposit, middle grade grading room liquid level descends, and when dropping to desired location, inductive head arrives controller through the line of induction to signal, and the push rod in the hydraulic electric push-rod assembly is moved downward, grade ore discharge valve in closing.The size of gape, the setting of liquid level can be accomplished through design.
In addition, the time of ore discharge also can be through setting certain time interval in controller, and regularly opening valve carries out ore discharge.
The ore pulp treating capacity scope of the said grader of the utility model is 20--2500m
3/ h, solids treatment weight range 10--1000t/h gives ore deposit solids content scope 10%--75%, and the solid granularity upper limit is generally 8mm.
Know that by above the utility model has the following advantages as a kind of automatically controlled multistage grader and control system:
1, operational indicator is superior, and classification efficiency is high.Especially middle fine fraction grading room because classification process is accomplished under laminar condition, inevitably waits the factor of falling minimum to the classification efficiency influence of automatically controlled multistage grader when hydrocyclone moves.
2, disposal ability is big.The ore pulp treating capacity can reach 2500m during platform
3More than/the h, the solids treatment amount then can reach 1000t/h.An automatically controlled multistage grader can replace several, tens and even up to a hundred other equipment.
3, comprise all control automatically of feedwater and discharge whole service process; Technic index and product granularity are formed stable; And the control system is very strong to the variation adaptive capacity of giving ore deposit nature parameters (such as flow, concentration, granularity etc.); Can make a response at once, take to adjust accordingly measure, guarantee graded index.
4, under the prerequisite that the ore pulp volume flow roughly remains unchanged, throughput can the scope about 30% in fluctuation and can not influence classification efficiency, this is one of incomparable at all lot of advantages of screening plant.
5, the sand setting production concentration of coarse grain and fine grading chamber can remain on more than 65% as required, and can concentrate adjustment further according to the requirement of follow-up ore grinding, and this is to compare one of remarkable advantages with hydrocyclone.
6, an equipment is accomplished two sections graded operations; Generate four kinds of products, and the classification process of coarse grain and fine and ultra-fine grain is relatively independent, can regulate respectively and optimize; And ore pulp need not preliminary treatment and can directly feed; Be connected simply with subsequent technique, can cancel or simplify concentrate, additional step and corresponding various auxiliary equipment such as desliming, bring a lot of technologic advantages to the ore dressing plant.This also be hydrocyclone or screening machine can't be obtained.Such as; Two sections classifying equipoments such as automatically controlled multistage grader can replace one, the duplex-spiral classifier after the secondary grinding, dusting cover; When fully improving the two stage grinding classification efficiency; Reduce the workload of maintenance of equipment significantly, embody a concentrated reflection of the work simplification of modern ore dressing plant, equipment enlarging, equipment centerization, reduce the principle of table of equipment number as far as possible.
7, different with other classification and screening plant, adopt automatically controlled multistage grader also just to keep the possibility of making a response effectively and adjusting flexibly according to the variation of ore character at any time, and must not invest once more.Such as, be reduced to 75 μ m to partition size from 100 μ m, only need hydrodynamic parameters adjustment is got final product.
8, owing to entire equipment except that sand setting product discharge valve has no other moving components, so the operation power consumption is very low.Based on same reason, noiselessness almost during operation, workman's work on the spot environment improves.
9, wearing and tearing are little.Middle grade ore discharge valve wear resistance as unique moving component is good, and expense own is very low, and replacement can be accomplished rapidly once in a while.The bottom compass screen surface of fine grading chamber is the top board of rising water tank simultaneously; Material is good, rational in infrastructure; Not only guarantee to form uniform and stable fluid bed, and created the condition that makes an ascending water buffering of formation moisture film below the ore pulp layer, thereby protect oneself not frayed effectively.As long as ascending water does not contain solid particle when equipment moves, guarantee the stable of maximum hydraulic pressure by monitoring system simultaneously, the life-span of bottom, fine grading chamber compass screen surface almost is unlimited.
10, except technical clear superiority, the great advantage of automatically controlled multistage grader is its unrivaled economic indicator.The combination of high classification efficiency, big disposal ability, low floor space and multistage grading technology has reduced construction investment and operating cost to greatest extent.Since above-mentioned wearing and tearing less, the low advantage of power consumption, formed automatically controlled multistage grader except that the significant advantage of the low operation expense of investment well below miscellaneous equipment.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
The specific embodiment
As shown in Figure 1, a kind of automatically controlled multistage grader comprises coarse grain grading room 1 and middle grade grading room 10; Coarse grain grading room 1 top is cylinder, and the bottom is a cone, and coarse grain grading room 1 top is provided with feed pipe 2; The bottom is provided with coarse grain ore discharge pipe 6, and coarse grain grading room 1 bottom is provided with a water inlet pipe 4, grade ore discharge valve 8 and 8 water inlet pipes 7 during middle grade grading room 10 bottoms are provided with; Said coarse grain grading room 1 bottom is provided with an air inlet rifle 5, and feed pipe 2 belows in the coarse grain grading room 1 are provided with the distribution plate 3 that disperses current, and a cross-sectional area is greater than top surface area in the middle of the distribution plate 3; Current are dispersed, and gapped between distribution plate 3 outsides and coarse grain grading room 1 inwall, it is outside that middle grade grading room 10 is looped around coarse grain grading room 1 cylinder; Fine fraction transporting room 14 in being provided with between middle grade grading room 10 and the coarse grain grading room 1; And fine fraction overflow ducts 15 in being provided with between coarse grain grading room 1 and the middle fine fraction transporting room 14, middle fine fraction transporting room 14 downsides have the discharge gate 16 that is communicated with middle grade grading room, and screen cloth 9 moving up and down laterally is installed in the middle grade grading room 10; Screen cloth 9 places discharge gate 16 downsides; Middle grade grading room 10 outer most surrounding fine fraction overflow launders 11, and be provided with fine fraction overflow ducts 17 between middle grade grading room 10 and the fine fraction overflow launder 11, coarse grain grading room 1 end face is provided with ultra-fine grade froth overflow channel 12.
Be provided with leveling device 13 in the middle grade grading room 10; This leveling device comprises inductive head, hydraulic electric push rod and controller; Inductive head through line of induction transmission liquid level signal to controller, controller control hydraulic electric push rod upwards promote or promotion downwards in grade ore discharge valve 8.
Claims (3)
1. automatically controlled multistage grader; Comprise coarse grain grading room (1) and middle grade grading room (10), coarse grain grading room (1) top is cylinder, and the bottom is a cone; Coarse grain grading room (1) top is provided with feed pipe (2); The bottom is provided with coarse grain ore discharge valve (6) and coarse grain grading room (1) bottom is provided with water inlet pipe (4), it is characterized in that, said coarse grain grading room (1) bottom is provided with one or more air inlet rifles (5); Feed pipe (2) below in the coarse grain grading room (1) is provided with the distribution plate (3) that disperses current, and is gapped between distribution plate (3) outside and coarse grain grading room (1) inwall; It is outside that middle grade grading room (10) is looped around coarse grain grading room (1) cylinder; Fine fraction transporting room (14) in being provided with between middle grade grading room (10) and the coarse grain grading room (1); And fine fraction overflow ducts (15) in being provided with between coarse grain grading room (1) and the middle fine fraction transporting room (14), middle fine fraction transporting room (14) downside has the discharge gate (16) that is communicated with middle grade grading room; Screen cloth moving up and down (9) laterally is installed in the middle grade grading room (10), and screen cloth (9) places discharge gate (16) downside, under screen cloth, is provided with one or more water inlet pipes (7), and middle grade grading room bottom is provided with middle grain ore discharge valve (8); Middle grade grading room (10) outer most surrounding fine fraction overflow launder (11); And be provided with fine fraction overflow ducts (17) between middle grade grading room (10) and the fine fraction overflow launder (11), coarse grain grading room (1) end face is provided with ultra-fine grade froth overflow channel (12).
2. according to the said automatically controlled multistage grader of claim 1; It is characterized in that; Be provided with leveling device (13) in the grade grading room (10) in said; This leveling device comprises controller and hydraulic electric push-rod assembly, and the output of controller is connected with the hydraulic electric push-rod assembly, and the push rod in the hydraulic electric push-rod assembly links with the middle grade ore discharge valve (8) that is installed in middle grade grading room bottom.
3. automatically controlled multistage grader according to claim 2 is characterized in that this leveling device also comprises inductive head, and the output of inductive head is connected with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204487456U CN202316090U (en) | 2011-11-14 | 2011-11-14 | Electric control multi-stage classifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204487456U CN202316090U (en) | 2011-11-14 | 2011-11-14 | Electric control multi-stage classifier |
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| Publication Number | Publication Date |
|---|---|
| CN202316090U true CN202316090U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204487456U Expired - Fee Related CN202316090U (en) | 2011-11-14 | 2011-11-14 | Electric control multi-stage classifier |
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| CN (1) | CN202316090U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944409A (en) * | 2016-06-14 | 2016-09-21 | 赵宁光 | Gravity water recycling device |
-
2011
- 2011-11-14 CN CN2011204487456U patent/CN202316090U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944409A (en) * | 2016-06-14 | 2016-09-21 | 赵宁光 | Gravity water recycling device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121114 |