CN106140451B - A kind of Separator of heavy medium shallow slot upper up-flow anti-blocking method and device - Google Patents
A kind of Separator of heavy medium shallow slot upper up-flow anti-blocking method and device Download PDFInfo
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- CN106140451B CN106140451B CN201610739677.6A CN201610739677A CN106140451B CN 106140451 B CN106140451 B CN 106140451B CN 201610739677 A CN201610739677 A CN 201610739677A CN 106140451 B CN106140451 B CN 106140451B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
- B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
- B03B5/36—Devices therefor, other than using centrifugal force
- B03B5/40—Devices therefor, other than using centrifugal force of trough type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
- B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
- B03B5/36—Devices therefor, other than using centrifugal force
- B03B5/40—Devices therefor, other than using centrifugal force of trough type
- B03B2005/405—Devices therefor, other than using centrifugal force of trough type using horizontal currents
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- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
A kind of Separator of heavy medium shallow slot upper up-flow anti-blocking method, cloth flowing plate is set on Separator of heavy medium shallow slot upper up-flow bucket, there is rising to spread discharge orifice in cloth flowing plate, spreads the arrangement, coal stream and the pitch of holes in spoil stream direction of discharge orifice by adjusting rising to improve cloth flowing plate percent opening；Rising flow tube and horizontal flow tube total sectional area ratio by controlling each model ensures upper up-flow and level stream in proper ratio come under the premise of ensuring the normal sorting of dense-medium shallow-tank separator simultaneously, improve the caliber for rising flow tube, increase upper up-flow in dense-medium shallow-tank separator assorting room, promote heavy-media suspension in dense-medium shallow-tank separator to stablize, prevents from rising and spread discharge orifice, blockage.The present invention is by changing cloth discharge orifice shape, it is effectivelying prevent rising discharge orifice, pipe nonclogging, the granularity lower limit that dense-medium shallow-tank separator can effectively be sorted to lump coal is down to 6mm from+13mm, the reduction of dense-medium shallow-tank separator lower limit of separation can largely alleviate the pressure of fine cleaned coal separation system.
Description
Technical field
The present invention relates to a kind of lump coal washing method and apparatus devices, and in particular in a kind of Separator of heavy medium shallow slot
Anti-blocking method and device are flowed up, the important lump coal choosing for being mainly used for heavy media coal separation is washed, and lump coal coal washing technique field is belonged to.
Background technology
The feature that dense-medium shallow-tank separator is high with its sharpness of separation, processing capacity is big, production cost is low has become dense media
Equipment is washed in the important lump coal choosing of coal separation.After pan feeding lump coal feeds sorting groove, suspension is totally immersed under controllable register effect
In.At this point, starting to be layered.The low-density object such as cleaned coal floats on upper layer, and the high density such as spoil sinks to groove body bottom.Sinking watching
In, the low-density object mixed with spoil continues to float after fully dispersed due to the effect of upper up-flow.Under level stream effect,
Float on the low-density object on top becomes head coal product by the discharge of discharge overflow port.Under scraper plate effect, the high density of slot bottom is sunk to
Object becomes spoil product by head chute discharge, to complete assorting room.
Suspension is fed by 2 positions in sorting groove body in dense-medium shallow-tank separator.It is upper up-flow to be fed from lower part,
Entered in slot by cloth flowing plate, it is made to be uniformly dispersed.The effect of upper up-flow is to maintain effect suspension stabilization, uniformly, while having dispersion
The effect of pan feeding.It is level stream to be fed from side, by the counterattack and limitation of cloth hopper, can make level stream overall with, uniformly
Enter sorting groove in.The effect of level stream is to maintain groove body top density of suspending liquid and stablizes, and is formed simultaneously from feeding end to row
The horizontal media stream for expecting end, starts shipment upper floating cleaned coal defeated effect.Therefore, the size of upper up-flow with whether unimpeded determine material
Layered effect and sharpness of separation are the prerequisites realized material and sorted by technology requirement.Heavy-media suspension be magnetite powder,
The density of the mixture of three kinds of different densities material compositions of coal slime and water, three substances is 4.2-5.0g/cm3,1.4-1.6 g/
Cm3,1 g/cm3, magnetite powder, coal slime density ratio water are big, therefore heavy-media suspension is that have easy adherency, deposition, fouling etc.
The unstable fluid of characteristic.
Domestic many coal preparation plants are in using existing dense-medium shallow-tank separator assorting room, because of shallow slot upper up-flow design structure
Upper deficiency, in addition the heavy-media suspension normally produced has the fluid of the characteristics such as easy adherency, deposition, fouling, rising to spread flowing plate
Hole and pipeline are frequently occluded the problem of as a generality.Feelings that are unsmooth or blocking occur for the upper up-flow of dense-medium shallow-tank separator
Condition can bring a series of adverse consequences, and smart coal yield reduces, product ash content increases, and power consumption increases, human cost
It wastes and influences normal organization of production etc., eventually lead to that the production cost increases, unstable product quality.Because of above-mentioned reason, although
Effective lower limit of separation of dense-medium shallow-tank can arrive 6mm, but be constantly subjected to limit in actual production, lead to point of most of coal preparation plants
Select lower limit that can only be selected in+13mm.So needing to improve this.
By patent retrieval do not find have with the patent literature of same technique of the present invention, have certain relationship with the present invention
Patent mainly have it is following：
1, Patent No. CN201620143976.9, entitled " a kind of large size dense-medium shallow-tank separator horizontal media stream is equal
The utility model patent of cloth apparatus ", which disclose a kind of large-scale dense-medium shallow-tank separator horizontal media stream even distribution device,
Belong to screening installation technical field；A kind of large size dense-medium shallow-tank separator horizontal media stream even distribution device, including it is mounted on dense medium
The tipper (1) of shallow-tank separator feeding mouth top and raw ore pan feeding chute lower part, feeding pipe (2), it is characterized in that：Further include
Chevron shaped dispersal device (3)；The bottom surface portion on the upper side of tipper (1) is evenly distributed with several through-holes and is connect with the upper end of feeding pipe (2)；People
Font dispersal device (3) is uniformly mounted on tipper (1) inner cavity downside, and the apical position of chevron shaped dispersal device (3) exists
The lower section of tipper (1) bottom through-hole.
2, Patent No. CN201620144117.1, entitled " large-scale dense-medium shallow-tank separator horizontal media flows into material dress
The utility model patent set belongs to point which disclose a kind of large-scale dense-medium shallow-tank separator horizontal media stream feeding device
Optional equipment technical field；The feeding device, including it is mounted on dense-medium shallow-tank separator feeding mouth top and raw ore pan feeding chute
Inclination dispersion slot (1), feeding pipe (2), control valve (3), the dispersion pipe (4) of lower part；It is characterized in that：Further include mixing tube (5),
Dispersion plate (6), both sides isocon (7), main feeding pipe (8)；Uniformly distributed four through-holes of the upper side of mixing tube (5) and and dispersion pipe
(4) lower end connection；The both ends of mixing tube (5) are equipped with flange, blind flange structure；Center line of the dispersion plate (6) along mixing tube (5)
Be horizontally arranged at the middle part of mixing tube (5) and mixing tube (5) be divided into two regions up and down, and with the blind at mixing tube (5) both ends
Orchid is bolted.
3, Patent No. CN201320127611.3, the utility model of entitled " a kind of high-efficiency dense-medium shallow-tank separator "
Patent, which disclose a kind of high-efficiency dense-medium shallow-tank separator, by groove body, transmission device, horizontal media stream feeding device, on
Medium flow field feed chute is risen, bottom drapery panel, wear-resisting slideway, road is oriented to, is oriented to road wear-resisting lining, side plate wear-resisting lining composition.Described
Groove body is evenly distributed with slot, groove body side plate, spoil discharge funnel by bottom dielectric and forms；The bottom dielectric is evenly distributed with slot by four chamber groups
At, and separated by gusset with holes between each chamber.The wear-resisting slideway is on the drapery panel of bottom along groove body direction
Center line both sides increase wear-resisting weld seam.The guiding road wear-resisting lining is to increase replaceable wearing plate on the downside of upper guiding road.Institute
The side plate wear-resisting lining stated is to install replaceable wearing plate in guiding road card slot up and down.
Although these above-mentioned patents are directed to dense-medium shallow-tank sorting, and propose some specific dense-medium shallow-tank sorting sides
The improvement of method or device, but unresolved heavy-media suspension set forth above has the stream of the characteristics such as easy adherency, deposition, fouling
Body, rising spreads flowing plate hole and the problem of pipeline is frequently occluded, so still needing further to be improved.
Invention content
It is an object of the invention to be directed to existing dense-medium shallow-tank method for separating or device rising to spread flowing plate hole and pipeline warp
The problem of often blocking proposes that a kind of method and device that can effectively avoid rising from spreading flowing plate hole and line clogging, this kind of stove are kept away
Exempt to rise the method and device for spreading flowing plate hole and line clogging to effectively eliminate in heavy-media suspension and easily adheres to, deposits, tying
Blocking caused by the unstable fluid of the characteristics such as dirt, and it is simple in structure, operating cost is low.
In order to reach this purpose, the present invention provides a kind of Separator of heavy medium shallow slot upper up-flow anti-blocking methods, in weight
Cloth flowing plate is set above medium shallow-tank separator upper up-flow bucket, has rising to spread discharge orifice in cloth flowing plate, is spread by adjusting rising
Arrangement, coal stream and the pitch of holes in spoil stream direction of discharge orifice improves cloth flowing plate percent opening；Simultaneously by controlling each type
Number rise flow tube and horizontal flow tube total sectional area ratio ensures dense-medium shallow-tank to ensure upper up-flow and level stream in proper ratio
Sorting machine normally under the premise of sorting, improves the caliber for rising flow tube, increases upper up-flow in dense-medium shallow-tank separator assorting room,
Promote heavy-media suspension in dense-medium shallow-tank separator to stablize, prevents from rising and spread discharge orifice, blockage.
Further, the rising of the cloth flowing plate is spread discharge orifice and is corresponded on each upper up-flow bucket of dense-medium shallow-tank separator
Square location arrangements.
Further, the adjustment rises the arrangement, coal stream and the pitch of holes in spoil stream direction for spreading discharge orifice
It is in parallel arrangement that raising cloth flowing plate percent opening, which is cloth discharge orifice, is arranged in parallel in coal stream and spoil stream direction, and rise and spread discharge orifice
The right stream direction spacing of cash is 30-40mm, and coal stream direction spacing is 50-60mm；It is different from the diamond shape of existing dense-medium shallow-tank separator
Arrangement is arranged in parallel in coal stream and arranges height compared with diamond shape with percent opening when spoil stream direction.
Further, the rising is spread there are three types of the hole shapes of discharge orifice：Through-hole, counterbore or inverted steps hole；Wherein,
It is anti-blocking that through-hole is suitable for dense-medium shallow-tank separator sorting+13mm lump coal upper up-flows；Counterbore, inverted steps hole are sorted suitable for dense-medium shallow-tank
Machine lower limit of separation is anti-blocking in 6 ~ 13mm lump coal upper up-flows；Cloth orifice aperture is φ 6-16mm.
Further, described to ensure to rise with horizontal flow tube total sectional area ratio by controlling each model rising flow tube
Stream ensures that normally sorting is to rise flow tube caliber to control each type to dense-medium shallow-tank separator with level stream in proper ratio
Number rise flow tube and horizontal flow tube total sectional area ratio between 0.1-0.35, ensures that upper up-flow and level stream ratio exist with this
0.1-0.35, to ensure that dense-medium shallow-tank separator normally sorts.
Further, it is that the caliber for rising flow tube is changed to a diameter of 100- that the raising, which rises the caliber of flow tube,
The caliber of 200mm.
Further, the cloth flowing plate is square structure, passes through bolt and dense-medium shallow-tank separator groove body bottom plate connecting.
A kind of Separator of heavy medium shallow slot upper up-flow anti-block apparatus, including Separator of heavy medium shallow slot groove body, in dense media
Horizontal flow tube is disposed with by shallow-tank separator groove body, the bottom face of Separator of heavy medium shallow slot groove body, which is equipped with, to be open, in opening
Be connected with upper up-flow bucket, be connected to rising flow tube below upper up-flow bucket, upper up-flow bucket under Separator of heavy medium shallow slot groove body
It is equipped with cloth flowing plate between portion's opening；It is evenly equipped with rising in cloth flowing plate and spreads discharge orifice, the rising of dense-medium shallow-tank separator sorting flows through
Rising is crossed to spread discharge orifice and enter Separator of heavy medium shallow slot groove body.
Further, the rising of the cloth flowing plate is spread discharge orifice and is corresponded on each upper up-flow bucket of dense-medium shallow-tank separator
Square location arrangements.
Further, the arrangement that discharge orifice is spread in the rising is that cloth discharge orifice is in parallel arrangement, is arranged in parallel in coal
Stream and spoil stream direction, and rise and spread the right stream direction spacing of discharge orifice cash for 30-40mm, coal stream direction spacing is 50-60mm；Have
It is not arranged in the diamond shape of existing dense-medium shallow-tank separator, is arranged in parallel in coal stream and is arranged compared with diamond shape with percent opening when spoil stream direction
It is high.
Further, the rising is spread there are three types of the hole shapes of discharge orifice：Through-hole, counterbore or inverted steps hole；Wherein,
It is anti-blocking that through-hole is suitable for dense-medium shallow-tank separator sorting+13mm lump coal upper up-flows；Counterbore, inverted steps hole are sorted suitable for dense-medium shallow-tank
Machine lower limit of separation is anti-blocking in 6 ~ 13mm lump coal upper up-flows；Cloth orifice aperture is φ 6-16mm.
Further, the rising flow tube caliber is controlling each model rising flow tube and horizontal flow tube total sectional area ratio
Between 0.1-0.35, upper up-flow and level stream ratio are ensured in 0.1-0.35, to ensure dense-medium shallow-tank separator just with this
Often sorting.
Further, the cloth flowing plate is square structure, passes through bolt and dense-medium shallow-tank separator groove body bottom plate connecting.
The advantage of the invention is that：
1, cloth flowing plate trepanning is improved by changing arrangement, coal stream and the pitch of holes in spoil stream direction in cloth flowing plate hole
Rate, while ensureing upper up-flow and the suitable ratio of level stream by controlling each model rising flow tube with horizontal flow tube total sectional area ratio
Example ensures dense-medium shallow-tank separator normally under the premise of sorting, properly increases the caliber for rising flow tube, and appropriate to increase dense medium shallow
Upper up-flow in slot sorting machine assorting room can promote heavy-media suspension in dense-medium shallow-tank separator to stablize, and prevent from rising and spread
Discharge orifice, blockage keep the technology condition that material effectively sorts in shallow-tank separator, advantageously reduce Jie of assorting room
Matter is lost, and reduces the tramp of assorting room, improves clean coal yield.
Simultaneously during parking removes suspension and returns qualified medium bucket, the suspension in groove body is because of the high cloth flowing plate of percent opening
A lower descending liquid many compared with original technology amplification is formd with the upper up-flow pipe for increasing caliber, this sinking such as assorting room
Upper up-flow equally plays the role of suspension in gutter body, in addition removing the quickening of Jie's speed, so that system is had and cleans certainly, prevents from adhering to
The effects that deposition, spreads flowing plate hole, blockage to prevent from rising, further decreases production cost.
2, the present invention by change cloth discharge orifice shape, in the case that effectivelying prevent rise discharge orifice, pipe it is nonclogging, can will weight
The granularity lower limit that medium shallow-tank separator effectively sorts lump coal is down to 6mm, the drop of dense-medium shallow-tank separator lower limit of separation from+13mm
It is low, it can largely alleviate the pressure of fine cleaned coal separation system, the costs of production and operation of coal preparation plant can also be greatly reduced.
Description of the drawings
Fig. 1 is the structural schematic diagram of a set of Separator of heavy medium shallow slot upper up-flow anti-block apparatus of the present invention；
Fig. 2 is cloth flowing plate of the present invention part enlarged structure schematic diagram；
Fig. 3 is the hole layout drawing of existing dense-medium shallow-tank separator cloth flowing plate；
Fig. 4 is the hole layout drawing of the cloth flowing plate of cloth flowing plate of the present invention；
Fig. 5 is the structural schematic diagram of the hole shape of the cloth flowing plate of cloth flowing plate of the present invention；
Fig. 6 is the structural schematic diagram of the hole another kind shape of the cloth flowing plate of cloth flowing plate of the present invention；
Fig. 7 is the structural schematic diagram of the hole another kind shape of the cloth flowing plate of cloth flowing plate of the present invention.
Specific implementation mode
It is next in the following with reference to the drawings and specific embodiments that the present invention is further explained.
Embodiment one
By attached drawing as can be seen that the present invention relates to a kind of Separator of heavy medium shallow slot upper up-flow anti-block apparatus, including weight
Medium shallow-tank separator groove body 6, is disposed with horizontal flow tube 5, Separator of heavy medium shallow slot by Separator of heavy medium shallow slot groove body 6
The bottom face of groove body 6 is equipped with opening 7, and upper up-flow bucket 2 is connected in opening 7, is connected to below upper up-flow bucket 2 and rises flow tube 3,
Cloth flowing plate 1 is equipped between upper up-flow bucket 2 and the lower openings 7 of Separator of heavy medium shallow slot groove body 6；It is evenly equipped in cloth flowing plate 1
Cloth discharge orifice 8 is flowed up, the upper up-flow of dense-medium shallow-tank separator sorting spreads discharge orifice 8 by rising and enters Separator of heavy medium shallow slot slot
Body 6.
Further, the rising of the cloth flowing plate 1 is spread discharge orifice 8 and is corresponded in each upper up-flow bucket of dense-medium shallow-tank separator
Top position is arranged.
Further, the arrangement that discharge orifice 8 is spread in the rising is that cloth discharge orifice is in parallel arrangement, is arranged in parallel in coal
Stream and spoil stream direction, and rise and spread the right stream direction spacing of discharge orifice cash for 30-40mm, coal stream direction spacing is 50-60mm；Have
It is not arranged in the diamond shape of existing dense-medium shallow-tank separator, is arranged in parallel in coal stream and is arranged compared with diamond shape with percent opening when spoil stream direction
It is high.
Further, the rising is spread there are three types of the hole shapes of discharge orifice 8：Through-hole, counterbore or inverted steps hole；Its
In, it is anti-blocking that through-hole is suitable for dense-medium shallow-tank separator sorting+13mm lump coal upper up-flows；Counterbore, inverted steps hole are suitable for dense-medium shallow-tank
Sorting machine lower limit of separation is anti-blocking in 6 ~ 13mm lump coal upper up-flows；Cloth orifice aperture is φ 6-16mm.
Further, 5 caliber of rising flow tube is controlling each model rising flow tube and horizontal flow tube total sectional area
Than between 0.1-0.35, upper up-flow and level stream ratio are ensured in 0.1-0.35, to ensure dense-medium shallow-tank separator with this
Normal sorting.
Further, the cloth flowing plate 1 is square structure, is joined by bolt and dense-medium shallow-tank separator groove body bottom plate
It connects.
It is described as follows below in conjunction with the accompanying drawings：
Known to Fig. 1, a set of Separator of heavy medium shallow slot upper up-flow anti-block apparatus of the invention includes cloth flowing plate 1, upper up-flow bucket
2, rise flow tube 3, squeezing valve 4 forms.Rise 3 caliber of flow tube and controls each model rising flow tube 3 and 5 total cross section of horizontal flow tube
Product is more existing heavy than ensureing upper up-flow and level stream proper ratio come under the premise of ensuring the normal sorting of dense-medium shallow-tank separator
Medium shallow-tank separator improves a specification.Squeezing valve 4 is the specifications and models to match with rising 3 caliber of flow tube
Fig. 2 passes through bolt and dense-medium shallow-tank separator groove body bottom plate and joins it is found that cloth flowing plate 1 is a square structure；Cloth flowing plate
There is rising to spread discharge orifice on 1, it is corresponding in dense-medium shallow-tank separator each upper up-flow bucket top position.
Fig. 3, Fig. 4 are it is found that the cloth discharge orifice in cloth flowing plate 1 is different from the water chestnut of existing dense-medium shallow-tank separator in parallel arrangement
Shape is arranged, is arranged in parallel in coal stream and is arranged height compared with diamond shape with percent opening when spoil stream direction Unequal distance；Cloth discharge orifice cash in cloth flowing plate 1
Right stream direction spacing is 30-40mm, and coal stream direction spacing is 50-60mm, the more existing dense-medium shallow-tank separator of percent opening is high by 30 ~
60%, cloth flowing plate aperture is φ 6-16mm.
Fig. 5, Fig. 6 and Fig. 7 are it is found that there are three types of cloth discharge orifice shapes in cloth flowing plate 1：Through-hole, counterbore, inverted steps hole, lead to
It is anti-blocking that hole is suitable for dense-medium shallow-tank separator sorting+13mm lump coal upper up-flows；Counterbore, inverted steps hole are suitable for dense-medium shallow-tank separator
Lower limit of separation is anti-blocking in 6 ~ 13mm lump coal upper up-flows.
Wherein, by through-hole in Fig. 1, Fig. 2, Fig. 3 technical characteristic and Fig. 5, for solving dense-medium shallow-tank separator lower limit of separation
Flowing plate hole, blockage problem are spread to rise when 13mm.By being fallen in Fig. 1, Fig. 2, Fig. 3 technical characteristic and Fig. 6 in counterbore 8 ' or Fig. 7
Inverted steps hole 8 " rises when for solving the problems, such as that dense-medium shallow-tank separator lower limit of separation is 6 ~ 13mm and spreads flowing plate hole, blockage.
Above-mentioned listed embodiment, only carries out clear, complete description in conjunction with attached drawing to technical scheme of the present invention；It is aobvious
So, described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, all other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
It will be apparent that being clear that the present invention can be attributed to by the description of embodiment is related to a kind of dense media
Cloth flowing plate is arranged on Separator of heavy medium shallow slot upper up-flow bucket, has in cloth flowing plate for shallow-tank separator upper up-flow anti-blocking method
Discharge orifice is spread in rising, spreads the arrangement, coal stream and the pitch of holes in spoil stream direction of discharge orifice by adjusting rising to improve cloth
Flowing plate percent opening；While ensureing upper up-flow and level by controlling each model rising flow tube with horizontal flow tube total sectional area ratio
Stream ensures that dense-medium shallow-tank separator normally under the premise of sorting, improves the caliber for rising flow tube in proper ratio, increases weight
Upper up-flow in medium shallow-tank separator assorting room promotes heavy-media suspension in dense-medium shallow-tank separator to stablize, prevents upper up-flow
Cloth discharge orifice, blockage.
Further, the rising of the cloth flowing plate is spread discharge orifice and is corresponded on each upper up-flow bucket of dense-medium shallow-tank separator
Square location arrangements.
Further, the adjustment rises the arrangement, coal stream and the pitch of holes in spoil stream direction for spreading discharge orifice
It is in parallel arrangement that raising cloth flowing plate percent opening, which is cloth discharge orifice, is arranged in parallel in coal stream and spoil stream direction, and rise and spread discharge orifice
The right stream direction spacing of cash is 30-40mm, and coal stream direction spacing is 50-60mm；It is different from the diamond shape of existing dense-medium shallow-tank separator
Arrangement is arranged in parallel in coal stream and arranges height compared with diamond shape with percent opening when spoil stream direction.
Further, the rising is spread there are three types of the hole shapes of discharge orifice：Through-hole, counterbore or inverted steps hole；Wherein,
It is anti-blocking that through-hole is suitable for dense-medium shallow-tank separator sorting+13mm lump coal upper up-flows；Counterbore, inverted steps hole are sorted suitable for dense-medium shallow-tank
Machine lower limit of separation is anti-blocking in 6 ~ 13mm lump coal upper up-flows；Cloth orifice aperture is φ 6-16mm.
Further, described to ensure to rise with horizontal flow tube total sectional area ratio by controlling each model rising flow tube
Stream ensures that normally sorting is to rise flow tube caliber to control each type to dense-medium shallow-tank separator with level stream in proper ratio
Number rise flow tube and horizontal flow tube total sectional area ratio between 0.1-0.35, ensures that upper up-flow and level stream ratio exist with this
0.1-0.35, to ensure that dense-medium shallow-tank separator normally sorts.
Further, it is that the caliber for rising flow tube is changed to a diameter of 100- that the raising, which rises the caliber of flow tube,
The caliber of 200mm.
The advantage of the invention is that：
1, it is opened by changing arrangement, coal stream and the pitch of holes in spoil stream direction in 1 hole of cloth flowing plate to improve cloth flowing plate
Porosity, while ensureing that upper up-flow is closed with level stream by controlling each model rising flow tube 3 with 5 total sectional area ratio of horizontal flow tube
Suitable ratio ensures that dense-medium shallow-tank separator normally under the premise of sorting, properly increases the caliber for rising flow tube 3, appropriate to increase weight
Upper up-flow in medium shallow-tank separator assorting room can promote heavy-media suspension in dense-medium shallow-tank separator to stablize, prevent from rising
Discharge orifice, blockage are spread, the technology condition that material effectively sorts in shallow-tank separator is kept, advantageously reduces assorting room
Dielectric loss, reduce the tramp of assorting room, improve clean coal yield.
Simultaneously during parking removes suspension and returns qualified medium bucket, the suspension in groove body is because of the high cloth flowing plate of percent opening
1 forms a lower descending liquid many compared with original technology amplification, this sinking such as assorting room with the rising flow tube 3 for increasing caliber
Upper up-flow equally play the role of suspension in gutter body, in addition removing the quickening of Jie's speed, system is made to have from cleaning, prevent from gluing
The effects that adventitious deposit, spreads flowing plate hole, blockage to prevent from rising, further decreases production cost.
2, the present invention by change cloth discharge orifice shape, in the case that effectivelying prevent rise discharge orifice, pipe it is nonclogging, can will weight
The granularity lower limit that medium shallow-tank separator effectively sorts lump coal is down to 6mm, the drop of dense-medium shallow-tank separator lower limit of separation from+13mm
It is low, it can largely alleviate the pressure of fine cleaned coal separation system, the costs of production and operation of coal preparation plant can also be greatly reduced.
Claims (6)
1. a kind of Separator of heavy medium shallow slot upper up-flow anti-blocking method, it is characterised in that：In Separator of heavy medium shallow slot upper up-flow
Cloth flowing plate is arranged in bucket above, has rising to spread discharge orifice in cloth flowing plate, by adjusting rise the arrangement for spreading discharge orifice, coal stream and
The pitch of holes in spoil stream direction improves cloth flowing plate percent opening；By controlling, each model rises flow tube and horizontal flow tube is total simultaneously
Sectional area ratio ensures upper up-flow and level stream in proper ratio come under the premise of ensuring the normal sorting of dense-medium shallow-tank separator,
The caliber for rising flow tube is improved, upper up-flow in dense-medium shallow-tank separator assorting room is increased, promotes weight in dense-medium shallow-tank separator
Dielectric suspensions are stablized, and prevent from rising and spread discharge orifice, blockage；The adjustment rises arrangement, the coal stream for spreading discharge orifice
And the pitch of holes in spoil stream direction is arranged in parallel in coal stream and spoil to improve cloth flowing plate percent opening be cloth discharge orifice in parallel arrangement
Direction is flowed, and rises and spreads discharge orifice spoil stream direction spacing for 30-40mm, coal stream direction spacing is 50-60mm；Described passes through
It controls each model and rises flow tube with horizontal flow tube total sectional area ratio to ensure that upper up-flow is come really with level stream in proper ratio
Taking care of yourself medium shallow-tank separator, normally sorting is to rise flow tube caliber to control each model rising flow tube and horizontal flow tube total cross section
Product ratio ensures upper up-flow and level stream ratio in 0.1-0.35, to ensure dense-medium shallow-tank sorting between 0.1-0.35, with this
Machine normally sorts；The caliber that the raising rises flow tube is will to rise the caliber that the caliber of flow tube is a diameter of 100-200mm.
2. Separator of heavy medium shallow slot upper up-flow anti-blocking method as described in claim 1, it is characterised in that：The cloth flowing plate
Rising spread discharge orifice correspond to dense-medium shallow-tank separator each upper up-flow bucket top position arrange.
3. Separator of heavy medium shallow slot upper up-flow anti-blocking method as described in claim 1, it is characterised in that：The upper up-flow
There are three types of the hole shapes of cloth discharge orifice：Through-hole, counterbore or inverted steps hole；Wherein, through-hole be suitable for dense-medium shallow-tank separator sorting+
13mm lump coal upper up-flows are anti-blocking；Counterbore, inverted steps hole are suitable for dense-medium shallow-tank separator lower limit of separation in the rising of 6 ~ 13mm lump coal
It flows anti-blocking；Cloth orifice aperture is φ 6-16mm.
4. a kind of Separator of heavy medium shallow slot upper up-flow anti-block apparatus, including Separator of heavy medium shallow slot groove body, shallow in dense media
Horizontal flow tube is disposed with by slot sorting machine groove body, the bottom face of Separator of heavy medium shallow slot groove body is equipped with opening, connects in opening
It is connected to upper up-flow bucket, rising flow tube, the lower part of upper up-flow bucket and Separator of heavy medium shallow slot groove body are connected to below upper up-flow bucket
Cloth flowing plate is equipped between opening；It is evenly equipped with rising in cloth flowing plate and spreads discharge orifice, the upper up-flow of dense-medium shallow-tank separator sorting is passed through
Rising spreads discharge orifice and enters Separator of heavy medium shallow slot groove body；The arrangement that discharge orifice is spread in rising is that cloth discharge orifice is in parallel cloth
It sets, is arranged in parallel in coal stream and spoil stream direction, and it is 30-40mm, coal stream direction that discharge orifice spoil stream direction spacing is spread in rising
Spacing is 50-60mm；It controls each model and rises flow tube and horizontal flow tube total sectional area ratio between 0.1-0.35, protected with this
Upper up-flow and level stream ratio are demonstrate,proved in 0.1-0.35, to ensure that dense-medium shallow-tank separator normally sorts；Rise flow tube caliber be
The caliber of a diameter of 100-200mm.
5. Separator of heavy medium shallow slot upper up-flow anti-block apparatus as claimed in claim 4, it is characterised in that：The cloth flowing plate
Rising spread discharge orifice correspond to dense-medium shallow-tank separator each upper up-flow bucket top position arrange.
6. Separator of heavy medium shallow slot upper up-flow anti-block apparatus as claimed in claim 4, it is characterised in that：The upper up-flow
There are three types of the hole shapes of cloth discharge orifice：Through-hole, counterbore or inverted steps hole；Wherein, through-hole be suitable for dense-medium shallow-tank separator sorting+
13mm lump coal upper up-flows are anti-blocking；Counterbore, inverted steps hole are suitable for dense-medium shallow-tank separator lower limit of separation in the rising of 6 ~ 13mm lump coal
It flows anti-blocking；Cloth orifice aperture is φ 6-16mm.
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| CN109692756A (en) * | 2019-01-25 | 2019-04-30 | 华北科技学院 | A kind of energy-efficient shallow slot screening installation |
| CN110479474B (en) * | 2019-09-17 | 2024-03-08 | 中国矿业大学 | Inclined channel reinforced dense medium shallow slot sorting device |
| CN112427135B (en) * | 2020-11-27 | 2023-06-02 | 呼和浩特科林热电有限责任公司 | Agitation type pebble coal separator and pebble coal separation equipment |
| CN114768988B (en) * | 2021-04-23 | 2024-01-26 | 永城煤电控股集团有限公司 | Stainless steel dense medium shallow slot coal sorter |
| CN113908970B (en) * | 2021-09-26 | 2024-04-26 | 中国矿业大学 | System for dense medium shallow slot intelligent regulation dense medium density based on machine vision |
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