CN201706873U - Coal slime centrifugal machine pulse stream cleaning anti-blockage device - Google Patents
Coal slime centrifugal machine pulse stream cleaning anti-blockage device Download PDFInfo
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- CN201706873U CN201706873U CN2010201865148U CN201020186514U CN201706873U CN 201706873 U CN201706873 U CN 201706873U CN 2010201865148 U CN2010201865148 U CN 2010201865148U CN 201020186514 U CN201020186514 U CN 201020186514U CN 201706873 U CN201706873 U CN 201706873U
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Abstract
The utility model discloses a coal slime centrifugal machine pulse stream cleaning anti-blockage device, which comprises a sieve basket or a sieve plate for separating solid and liquid of a coal slime centrifugal machine, wherein the sieve basket or the sieve plate is provided with a certain gap, the outer portion of the sieve basket or the sieve plate is provided with a pulse stream generating device, the pulse stream generating device comprises a pulse jet stream generator and at least more than one pulse stream nozzle, the pulse stream nozzle and the pulse jet stream generator are connected together, the pulse stream nozzles jets pulse stream produced by the pulse jet stream generator to the gap of the sieve basket or the sieve plate in a certain frequency, and the pulse stream nozzles are arranged toward the gap of the sieve basket or the sieve plate according to the vertical direction, and can continuously or discontinuously jet pulse stream to the sieve basket or the sieve plate in the work time of the sieve basket or the sieve plate. The pulse stream can be water pulse stream or air pulse stream.
Description
Technical field
The utility model relates to a kind of part device of centrifugal dehydrator, is cleaning method and anti-block apparatus that the used basket of a kind of coal slurry centrifugal dehydrator Separation of Solid and Liquid, sieve plate slit are stopped up specifically, and this kind device can be fit to various coal slurry centrifugal dehydrators to be used.Belong to the coal processing technique field.
Background technology
Coal slime dewatering is one of technical barrier of domestic and international wet method coal washing processing always, the quality of coal slime dewatering effect is very big to the moisture effects of marketable coal, not only influence marketable coal sale, increase idle transportation, reduce the economic benefit of coal enterprise, also influence user's use and economic benefit.Coal slime dewatering coal preparation plant's construction, in service be the operation that investment is big, energy consumption is high, operating cost is high, but be the indispensable critical process of modernized coal preparation plant.
At present both at home and abroad coal slime dewatering is generally adopted vacuum filtration, press filtration, centrifugal sedimentation or centrifugal sedimentation to filter to combine and the method for pressure filtration.
Vacuum filtration product moisture height (27～28%), disposal ability is low, energy consumption is big, auxiliary equipment is many, floor space is big, operating cost is high; Press filtration can only step work, and disposal ability is low, energy consumption is high, expense is high; Pressure filtration and the domestic barrier film plate and frame filter press of development recently (handling floating smart) product moisture about 20% is not broken away from intermittently used press filtration feature and defective yet; It is one of effective ways to the fine coal slurry dehydration that centrifugal sedimentation and centrifugal sedimentation are filtered, external application is success and extensive relatively, domestic but apply bad, though its product moisture is very low, work continuously, disposal ability is bigger, but maintenance difficult, filter liquor concentration height, operation and maintenance cost height, thereby limited application in coal preparation plant.
Latest domestic development and the LLL series coal slime centrifuge that puts goods on the market belong to the filtering type centrifugal dehydration.This equipment dependability height, disposal ability are big, and product moisture reaches about 17%, holds back granularity and reaches 0.125mm, serial coal slime centrifuge recovery+0.125mm coal slime.Theoretical show with experiment, coal slime hold back that granularity depends on the basket slit and to the requirement of product moisture.Sieve seam is more little, it is few more to hold back granularity, and product moisture will increase simultaneously, and the characteristic of coal slime is also to holding back granularity and product moisture has certain influence in addition.Centrifuge vertical bar basket sieve gap is δ, the centrifuge filter course is subjected to the extruding pulverization of spiral scraper, there is particle just in time to be stuck in the sieve seam frequently because of extruding, still can not throw away the sieve seam by centrifugal force, along with this situation increases, the particle card many, cause the basket effective area constantly to reduce, the coal slime viscosity of adding is strong, the argillization phenomenon is put up a bridge between particle seriously, easily hardens, stops up a lot of sieve seams, this is totally unfavorable to coal slime centrifuge operate as normal, to cause product moisture to increase, even can't work continuously.Therefore need further to be improved.
The utility model content
The purpose of this utility model, block because of particle easily in order to overcome existing coal slime centrifuge sieve seam exactly, cause the basket effective area constantly to reduce, the coal slime viscosity of adding is strong, the argillization phenomenon serious, put up a bridge between particle easily and hardens, stops up the deficiencies of a lot of sieve seams, proposes a kind ofly can sieve the used basket of coal slurry centrifugal dehydrator Separation of Solid and Liquid that sew the card particle, the cleaning method and the anti-block apparatus of sieve plate slit obstruction by more effective removing coal slime centrifuge.
The technical scheme that its technical problem that solves the utility model adopts is: the cleaning device that used basket of a kind of coal slurry centrifugal dehydrator Separation of Solid and Liquid or sieve plate slit are stopped up, comprise used basket of coal slurry centrifugal dehydrator Separation of Solid and Liquid or sieve plate, basket or sieve plate are provided with certain slit; Be outside equipped with the stream of pulses generating means at basket or sieve plate, the stream of pulses generating means comprises the pulsing jet generator and is provided with more than one stream of pulses nozzle at least, stream of pulses nozzle and pulsing jet generator link together, and the stream of pulses that the stream of pulses nozzle will be produced through the pulsing jet generator is with the pulse directive basket or the sieve plate slit of certain frequency; The stream of pulses nozzle faces toward basket or sieve plate slot placement according to vertical direction, and can flow basket or sieve plate slit transmitted pulse continuously or discontinuously when basket, sieve plate work.Described stream of pulses can be hydraulic pulse stream or air pulse stream.
The utility model compared with prior art, the particle that the mode that advantage is to adopt pulsed flow is stopped up basket or sieve plate slit carries out the cleaning of certain vibration frequency, and the theoretical foundation of pulse cleaning anti-blocking method is to form very brief shock wave and act on surface to be cleaned by stream of pulses to realize cleaning process.Cleaning process finish impulse generator by different structure.The shock wave clapp oscillator at first is full of compressed air in several seconds, in the time of centisecond these stream of pulses are discharged then, thereby form powerful pulse shock.The stratum granulosum that a large amount of stream of pulses of these moments discharges blocks basket, sieve plate slit produces powerful oscillation action causes coming off of deposited particles.Make cleaning performance is increased exponentially.
Pulse disappears and washes the characteristics of anti-blocking method:
1, energy is big.It is big that the pulse Cleaning device for pipeline is specially adapted to viscosity, and easily the material of caking is splendid as clear material and broken arch effect.
2, energy consumption is low.The accumulator volume of Cleaning device for pipeline is little, and inflationtime is short, the Cleaning device for pipeline discontinuous operation, and each working time has only several milliseconds, so institute consumes air capacity seldom during Cleaning device for pipeline work, and the energy that consumes than other block clearing flow-aiding device is low.
3, safe and reliable.Cleaning device for pipeline guarantees safe and reliable in strict accordance with " GB150-1998 " standard design, the manufacturing of national regulation in the work.Injecting time was short when the pressure-air in the accumulator was worked, and power consumption is few, and its impulsive force can not make generations such as feed bin and hopper and pipeline resonate and bulkhead is caused mechanical damage.
4, easy for installation.The Cleaning device for pipeline volume is little, and is in light weight, the link that presets on the fixed mount on the accumulator and feed bin, the hopper need only be connected fastening getting final product with bolt during installation, can take suitable reinforcement measure in case of necessity.
5, easy to operate.The operation of Cleaning device for pipeline can be divided into manually or be automatic.Can adopt control cabinet to the separate unit Cleaning device for pipeline, to many selected for use the PLC controls that needs are program control.The working time of every kind of automatic control product is set before dispatching from the factory, and can be set according to the equipment situation is on-the-spot voluntarily blanking time by the user.
Description of drawings
Fig. 1 is the utility model principle schematic.
Fig. 2 is the utility model waterpower pulse cavitation jet cleaning anti-blocking system works simplified schematic diagram.
Fig. 3 is the utility model waterpower pulse cavitation jet generator architecture schematic diagram.
Fig. 4 is the utility model strength pulse cleaning anti-blocking system simplified schematic diagram.
Among the figure: 1, basket or sieve plate; 2, stream of pulses generating means; 3, high-pressure pump; 4, overflow valve; 5, water tank; 6, stream of pulses nozzle; 7, waterpower pulse cavitation jet generator; 8, scavenge pipe; 9, two maternal bodies; 10, baffle; 11, circlip; 12, impeller base; 13, impeller shaft; 14, impeller; 15, the self-excited oscillation cavity; 16, basket or sieve plate; 17, air compressor machine; 18, air accumulator; 19, air-flow impulse generator; 20, gas-water mixer; 21, detergent line; 22, air pulse nozzle.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, the cleaning device that used basket of a kind of coal slurry centrifugal dehydrator Separation of Solid and Liquid or sieve plate slit are stopped up utilizes stream of pulses that the particle that is stopped up in basket or the sieve plate slit 23 is cleaned; Outside in basket or sieve plate slit 23, be provided with a stream of pulses generating means 24, and perpendicular to basket or the more than one stream of pulses nozzle 25 of sieve plate slit 23 layouts, stream of pulses generating means 24 is delivered to stream of pulses nozzle 25 with the stream of pulses that is produced by pipe blow-through 26, again by 25 ejections of stream of pulses nozzle; Stream of pulses nozzle 25 can flow basket or sieve plate slit 23 transmitted pulses when basket or sieve plate work continuously or discontinuously, the pulsatile impact ripple that is produced when utilizing stream of pulses on spraying road basket or sieve plate slit 23, the vibration that makes basket or sieve plate produce certain frequency, the stratum granulosum that the vibration effect that produces by stream of pulses is blocked basket or sieve plate slit produces powerful oscillation action causes coming off of deposited particles.
Embodiment one
The cleaning device (as shown in Figure 2) that used basket of a kind of coal slurry centrifugal dehydrator Separation of Solid and Liquid or sieve plate slit are stopped up comprises used basket of coal slurry centrifugal dehydrator Separation of Solid and Liquid or sieve plate 1, and basket or sieve plate 1 are provided with certain slit; Be outside equipped with stream of pulses generating means 2 at basket or sieve plate 1, stream of pulses generating means 2 comprises high-pressure pump 3, overflow valve 4, water tank 5, waterpower pulse cavitation jet generator 7 and row's stream of pulses nozzle 6; Stream of pulses nozzle 6 is connected by fine purifiation pipe 8 with waterpower pulse cavitation jet generator 7, and the hydraulic pulse stream that stream of pulses nozzle 6 will be produced through waterpower pulse cavitation jet generator 7 is with the slit of the pulse directive basket or the sieve plate 1 of certain frequency; Described row's stream of pulses nozzle 7 is the length according to the slit of basket or sieve plate 1, vertical facing to arranging at certain intervals in the slit of basket or sieve plate 1, and can be when basket or sieve plate 1 work can be continuously or discontinuously to the slit transmitted pulse stream of basket or sieve plate 1.
Described waterpower pulse cavitation jet generator 6 is installed on the front end of scavenge pipe 8, waterpower pulse cavitation jet generator 7 produces perturbation action and the coupling of self-vibration cavitation effect with convection cell, make the conventional continuous-flow fluid that enters pipeline be modulated into the vibratory impulse streaming flow, become pulse cavitating jet by 7 outlets of stream of pulses nozzle, described pulse cavitating jet produces three kinds of effects:
1. waterpower pulse.Improve the flushing flow field, improve the sieve seam and purify and cleaning efficiency;
2. cavitation erosion.Auxiliary flushing improves cleaning efficiency.
3. instantaneous negative pressure.The instantaneous underbalance pulse of sieve seam obstruction place, local instantaneous underbalance.
Described waterpower pulse cavitation jet generator 7 can be a kind of vane type self-oscillation waterpower pulse cavitation jet generator (seeing accompanying drawing 3), adopts baffle, impeller assembly and the self-excited oscillation cavity to be series at the structure of two maternal body inside successively from top to bottom; Described waterpower pulse cavitation jet generator 7 comprises two maternal bodies 9, baffle 10, circlip 11, impeller base 12, impeller shaft 13, impeller 14 and the self-excited oscillation cavity 15, baffle 9 is positioned at the fluid intake end of two maternal bodies 9, the port of export of baffle 9 is connected to the impeller assembly, be with impeller 14 on the impeller shaft 13 of impeller assembly, impeller 14 is installed in the impeller base 12; Behind the impeller assembly, be connected to the self-excited oscillation cavity 15, must act on by impeller assembly and the self-excited oscillation cavity 15 and make the current that enter waterpower pulse cavitation jet generator 7 become pulse cavitating jet.At inlet one end of baffle 10 by two maternal bodies 9, skid off in order to prevent baffle 10, be provided with circlip 11.
Described stream of pulses nozzle 7 is installed on the port of export of the pipe-line system of the scavenge pipe 8 on the centrifuge, the waterpower pulse cavitation jet that stream of pulses nozzle 7 ejects is perpendicular to basket sieve seam, the stream of pulses nozzle is equally spaced according to basket or sieve plate slit, can carry out the jet flow cavitation cleaning at whole basket or sieve plate slit, thereby can effectively remove the fine slime of blocking in the sieve seam, prevent that sieve from sewing phenomenon of blocking.According to the variation of serial coal slime centrifuge basket specification, the structure of stream of pulses nozzle 7, quantity, jet flow cavitation pressure, water pipe inside nominal diameter have certain matching relationship, can adjust as required.
This device is connected hand-held spray guns when being used for other equipment of vibratory sieve and coal preparation plant, pipeline and cleaning with adapter behind this system's waterpower pulsing jet cavitation generator, can realize the cleaning and the block clearing of needs.
Embodiment two
The cleaning device (seeing accompanying drawing 4) that used basket of a kind of coal slurry centrifugal dehydrator Separation of Solid and Liquid or sieve plate slit are stopped up comprises used basket of coal slurry centrifugal dehydrator Separation of Solid and Liquid or sieve plate 16, and basket or sieve plate 16 are provided with certain slit; Be outside equipped with the stream of pulses generating means at basket or sieve plate 16, the stream of pulses generating means comprises on air compressor machine 17, air accumulator 18, air-flow impulse generator 19, gas-water mixer 20 and the centrifuge detergent line 21 and is provided with more than one air pulse nozzle 22 at least, air pulse nozzle 22 links together by detergent line 21 with air-flow impulse generator 20, and the stream of pulses that air pulse nozzle 22 will be produced through air-flow impulse generator 19 is with the pulse directive basket or the sieve plate slit of certain frequency; Air pulse nozzle 22 according to vertical direction facing to basket or sieve plate slot placement, and can be when basket or sieve plate 16 work can be continuously or discontinuously to the slit transmitted pulse air-flow of basket or sieve plate 16.
The theoretical foundation of air-flow pulse cleaning anti-blocking method is to form very brief shock wave and act on surface to be cleaned by pulse of compressed air stream to realize cleaning process.Finishing of cleaning process need be by the air pulsing generator of different structure.The shock wave clapp oscillator at first is full of compressed air in several seconds, in the time of centisecond these gases are discharged then, thereby form powerful air pulse.The stratum granulosum that a large amount of pulse of air stream of these moments discharges blocks basket, sieve plate slit produces powerful oscillation action causes coming off of deposited particles.Make cleaning performance is increased exponentially.
Claims (7)
1. a coal slurry centrifugal dehydrator stream of pulses cleaning anti-blocking device comprises used basket of coal slurry centrifugal dehydrator Separation of Solid and Liquid or sieve plate, and basket or sieve plate are provided with certain slit; It is characterized in that: be outside equipped with the stream of pulses generating means at basket or sieve plate, the stream of pulses generating means comprises the pulsing jet generator and is provided with more than one stream of pulses nozzle at least, stream of pulses nozzle and pulsing jet generator link together, and the stream of pulses that the stream of pulses nozzle will be produced through the pulsing jet generator is with the pulse directive basket or the sieve plate slit of certain frequency; The stream of pulses nozzle faces toward basket or sieve plate slot placement according to vertical direction, and can flow basket or sieve plate slit transmitted pulse continuously or discontinuously when basket or sieve plate work.
2. coal slurry centrifugal dehydrator stream of pulses cleaning anti-blocking device as claimed in claim 1, it is characterized in that: described stream of pulses is hydraulic pulse stream or air pulse stream.
3. a coal slurry centrifugal dehydrator stream of pulses cleaning anti-blocking device comprises used basket of coal slurry centrifugal dehydrator Separation of Solid and Liquid or sieve plate, and basket or sieve plate are provided with certain slit; It is characterized in that: be outside equipped with the stream of pulses generating means at basket or sieve plate, the stream of pulses generating means comprises high-pressure pump, overflow valve, water tank, waterpower pulse cavitation jet generator and row's stream of pulses nozzle, the stream of pulses nozzle is connected by scavenge pipe with the waterpower pulse cavitation jet generator, and the hydraulic pulse stream that the stream of pulses nozzle will be produced through the waterpower pulse cavitation jet generator is with the pulse directive basket or the sieve plate slit of certain frequency; Described row's stream of pulses nozzle is according to basket or sieve plate slit, vertically arrange at certain intervals facing to basket or sieve plate slit, and can be when basket, sieve plate work can be continuously or discontinuously to basket or sieve plate slit transmitted pulse stream.
4. coal slurry centrifugal dehydrator stream of pulses cleaning anti-blocking device as claimed in claim 3, it is characterized in that: described waterpower pulse cavitation jet generator is installed on the front end of scavenge pipe, the waterpower pulse cavitation jet generator produces perturbation action and the coupling of self-vibration cavitation effect with convection cell, make the conventional continuous-flow fluid that enters pipeline be modulated into the vibratory impulse streaming flow, become pulse cavitating jet by the stream of pulses jet expansion.
5. coal slurry centrifugal dehydrator stream of pulses cleaning anti-blocking device as claimed in claim 4, it is characterized in that: described waterpower pulse cavitation jet generator is a kind of vane type self-oscillation waterpower pulse cavitation jet generator, adopts baffle, impeller assembly and the self-excited oscillation cavity to be series at the structure of two maternal body inside successively from top to bottom.
6. coal slurry centrifugal dehydrator stream of pulses cleaning anti-blocking device as claimed in claim 5, it is characterized in that: described waterpower pulse cavitation jet generator comprises two maternal bodies, baffle, circlip, impeller base, impeller shaft, impeller and the self-excited oscillation cavity, baffle is positioned at two female intrinsic fluid intake ends, the port of export of baffle is connected to the impeller assembly, be with impeller on the impeller shaft of impeller assembly, impeller is installed in the impeller base; Behind the impeller assembly, be connected to the self-excited oscillation cavity, must act on by impeller assembly and the self-excited oscillation cavity and make the current that enter the waterpower pulse cavitation jet generator become pulse cavitating jet.
7. a coal slurry centrifugal dehydrator stream of pulses cleaning anti-blocking device comprises used basket of coal slurry centrifugal dehydrator Separation of Solid and Liquid or sieve plate, and basket or sieve plate are provided with certain slit; It is characterized in that: be outside equipped with the stream of pulses generating means at basket or sieve plate, the stream of pulses generating means comprises on air compressor machine, air accumulator, air-flow impulse generator, gas-water mixer and the centrifuge detergent line and is provided with more than one air pulse nozzle at least, air pulse nozzle and air-flow impulse generator link together, and the stream of pulses that the air pulse nozzle will be produced through the pulsing jet generator is with the pulse directive basket or the sieve plate slit of certain frequency; The air pulse nozzle according to vertical direction facing to basket or sieve plate slot placement, and can be when basket, sieve plate work continuously or discontinuously to basket or sieve plate slit transmitted pulse air-flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201865148U CN201706873U (en) | 2010-05-12 | 2010-05-12 | Coal slime centrifugal machine pulse stream cleaning anti-blockage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201865148U CN201706873U (en) | 2010-05-12 | 2010-05-12 | Coal slime centrifugal machine pulse stream cleaning anti-blockage device |
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| CN201706873U true CN201706873U (en) | 2011-01-12 |
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| CN2010201865148U Expired - Lifetime CN201706873U (en) | 2010-05-12 | 2010-05-12 | Coal slime centrifugal machine pulse stream cleaning anti-blockage device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865601B (en) * | 2010-05-12 | 2012-06-06 | 株洲舜臣选煤机械有限责任公司 | Pulse stream cleaning anti-blocking method and device of coal slurry centrifugal dehydrator |
| CN107663802A (en) * | 2017-10-27 | 2018-02-06 | 宁波市江北区伊人宝贸易有限公司 | A kind of industrial paper pulp making apparatus |
-
2010
- 2010-05-12 CN CN2010201865148U patent/CN201706873U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865601B (en) * | 2010-05-12 | 2012-06-06 | 株洲舜臣选煤机械有限责任公司 | Pulse stream cleaning anti-blocking method and device of coal slurry centrifugal dehydrator |
| CN107663802A (en) * | 2017-10-27 | 2018-02-06 | 宁波市江北区伊人宝贸易有限公司 | A kind of industrial paper pulp making apparatus |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110112 Effective date of abandoning: 20130227 |
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| RGAV | Abandon patent right to avoid regrant |