CN116586209B - Novel three-section heavy medium cyclone - Google Patents
Novel three-section heavy medium cyclone Download PDFInfo
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- CN116586209B CN116586209B CN202310846443.1A CN202310846443A CN116586209B CN 116586209 B CN116586209 B CN 116586209B CN 202310846443 A CN202310846443 A CN 202310846443A CN 116586209 B CN116586209 B CN 116586209B
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- 239000000463 material Substances 0.000 claims abstract description 67
- 239000003245 coal Substances 0.000 claims abstract description 66
- 238000007599 discharging Methods 0.000 claims abstract description 42
- 238000005192 partition Methods 0.000 claims abstract description 34
- 238000009434 installation Methods 0.000 claims description 14
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 9
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 9
- 241001330002 Bambuseae Species 0.000 abstract description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 9
- 239000011425 bamboo Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 241000196324 Embryophyta Species 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/24—Multiple arrangement thereof
- B04C5/26—Multiple arrangement thereof for series flow
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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
- B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
- B03B5/34—Applications of hydrocyclones
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- Cyclones (AREA)
Abstract
The invention provides a novel three-section heavy medium cyclone, which relates to the technical field of material separation, and comprises the following components: the feeding pipes of the first-stage cyclone, the second-stage cyclone and the third-stage cyclone are communicated with the discharging cylinder of the first-stage cyclone through connecting pipes; be provided with the baffle along axial direction in the ejection of compact section of thick bamboo, the baffle separates ejection of compact section of thick bamboo into first passageway and second passageway, and inlayer light material and outer heavy material can be separated to the baffle to make inlayer light material flow into in the second section of swirler through first passageway, outer heavy material flows into in the three-section swirler through the second passageway. Because the inner layer light material and the outer layer heavy material can enter the discharging cylinder in a layered manner, the inner layer light material and the outer layer heavy material are separated by the partition plate, the outer layer heavy material enters the three-section cyclone for separation, the clean coal entrained in the middling can be recovered to a greater extent, the clean coal loss is reduced, the clean coal yield is improved, and the economic benefit of a coal preparation plant is increased.
Description
Technical Field
The invention relates to the technical field of material sorting, in particular to a novel three-section heavy medium cyclone.
Background
The heavy medium cyclone is a device with a specific structure for separating light products from heavy products in a centrifugal field and a density field generated by external pressure by using heavy suspension or heavy liquid as a medium, and is the most efficient device in the existing gravity coal separation method.
In the heavy medium cyclone, clean coal moves along the direction of the inner spiral and is separated by the overflow port, gangue and other impurities move along the direction of the outer spiral and are discharged from the discharge port at the bottom of the heavy medium cyclone.
However, part of clean coal is entrained in gangue and other impurities and discharged from a discharge hole, so that clean coal is entrained in middlings, and the yield of the clean coal is low.
Disclosure of Invention
The invention aims to provide a novel three-section heavy medium cyclone, which aims to solve the technical problem that middlings discharged by the novel three-section heavy medium cyclone in the prior art entrain clean coal.
The invention provides a novel three-section heavy medium cyclone, which comprises the following components: the feeding pipes of the two-section cyclone and the three-section cyclone are communicated with the discharging cylinder of the one-section cyclone through connecting pipes;
the separator is arranged in the discharging cylinder along the axial direction and divides the discharging cylinder into a first channel and a second channel, and the separator can divide inner-layer light materials and outer-layer heavy materials so that the inner-layer light materials flow into the two-section cyclone through the first channel and the outer-layer heavy materials flow into the three-section cyclone through the second channel.
Further, one end of the partition plate is rotatably connected with the outlet end of the discharging cylinder to form a rotating shaft, and the partition plate can rotate around the rotating shaft to change the sizes of the first channel and the second channel.
Further, the baffle plate is fixedly connected with the discharging cylinder.
Further, the free end of the partition plate faces the wall surface inside the one-section cyclone to form an arc-shaped structure, and the curvature of the arc-shaped structure is the same as that of the inner surface of the one-section cyclone.
Further, the inner diameter of the two-stage cyclone and the inner diameter of the three-stage cyclone are smaller than the inner diameter of the one-stage cyclone.
Further, the central shafts of the two-stage cyclone and the three-stage cyclone are on the same straight line, and are arranged with the central shaft of the one-stage cyclone according to a preset angle.
Further, the preset angle is determined according to the coal quality of the raw coal.
Further, the installation angles of the first-stage cyclone, the second-stage cyclone and the third-stage cyclone are all 0-30 degrees.
Further, the pipe diameter of the connecting pipe becomes smaller along the direction away from the discharging barrel.
Further, the first-stage cyclone is a non-pressure heavy medium cyclone, and the second-stage cyclone and the third-stage cyclone are both pressure heavy medium cyclones.
The invention provides a novel three-section heavy medium cyclone, which comprises the following components: the feeding pipes of the two-section cyclone and the three-section cyclone are communicated with the discharging cylinder of the one-section cyclone through connecting pipes; the separator is arranged in the discharging cylinder along the axial direction and divides the discharging cylinder into a first channel and a second channel, and the separator can divide inner-layer light materials and outer-layer heavy materials so that the inner-layer light materials flow into the two-section cyclone through the first channel and the outer-layer heavy materials flow into the three-section cyclone through the second channel. Because the inner layer light material and the outer layer heavy material can enter the discharging cylinder in a layered manner, the inner layer light material and the outer layer heavy material are separated by the partition plate, so that the inner layer light material enters the second-stage cyclone, the clean coal carried in the middlings discharged by the first-stage cyclone can be separated, the outer layer heavy material enters the third-stage cyclone to be separated, the clean coal carried in the middlings can be recovered to a greater extent, the clean coal loss is reduced, the clean coal yield is improved, and the economic benefit of coal preparation plants is increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a novel three-stage dense-medium cyclone provided by an embodiment of the invention;
FIG. 2 is a cross-sectional view in the direction A of FIG. 1;
FIG. 3 is a B-B sectional view of FIG. 1;
FIG. 4 is a schematic structural diagram of one stage of a novel three-stage heavy medium cyclone provided by an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a two-stage cyclone in the novel three-stage heavy medium cyclone provided by the embodiment of the invention;
FIG. 6 is a schematic structural diagram of a three-stage cyclone in the novel three-stage dense-medium cyclone provided by the embodiment of the invention;
fig. 7 is a schematic structural diagram of a novel three-section heavy medium cyclone with a rotating shaft according to an embodiment of the present invention.
Icon: 1-a stage of cyclone; 2-raw coal inlet; 3-a section of overflow port; 4-an inlet; 5-a discharging cylinder; 6-a separator; 7-connecting pipes; 8-two-stage cyclone; 9-a feeding pipe of the two-stage cyclone; 10-two-stage overflow port; 11-two-stage underflow opening; 12-three-stage cyclone; 13-feeding pipe of three-section cyclone; 14-three-section overflow port; 15-three sections of bottom flow ports; 16-a rotating shaft.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a novel three-section heavy medium cyclone, and a plurality of embodiments are provided below to describe the novel three-section heavy medium cyclone in detail.
The novel three-section heavy medium cyclone provided in this embodiment, as shown in fig. 1 to 7, includes: the feeding pipes of the first-stage cyclone 1, the second-stage cyclone 8 and the third-stage cyclone 12 are communicated with the discharging cylinder 5 of the first-stage cyclone 1 through connecting pipes; be provided with baffle 6 along axial direction in the ejection of compact section of thick bamboo 5, baffle 6 separates ejection of compact section of thick bamboo 5 into first passageway and second passageway, and baffle 6 can separate inlayer light material and outer heavy material to make inlayer light material flow into in the second section of swirler 8 through first passageway, outer heavy material flows into in the three-section swirler 12 through the second passageway.
Specifically, the extending direction of the partition plate 6 is arranged in the axial direction of the discharge tube 5 to partition the discharge tube into the first passage and the second passage. The first channel is communicated with a feeding pipe 9 of the two-stage cyclone through a connecting pipe 7, and the second channel is communicated with a feeding pipe 13 of the three-stage cyclone through the connecting pipe 7.
According to the separation principle of the novel three-section heavy medium cyclone, the light materials and the heavy materials are layered under the action of the centrifugal force field of the novel three-section heavy medium cyclone, and the outer circular motion of the heavy materials is close to the wall surface distribution of the novel three-section heavy medium cyclone, namely is in outer layer distribution; the light material moves in the inner circle and is far away from the wall surface distribution of the novel three-section heavy medium cyclone, namely, is in the inner layer distribution.
Wherein, the first-stage cyclone 1, the second-stage cyclone 8 and the third-stage cyclone 12 are all heavy medium cyclones. Specifically, the primary cyclone 1 further comprises a raw coal inlet 2, a primary overflow 3 and an inlet 4.
The heavy medium mixing liquid is mixed and separated by a slurry pump from a mixing inlet 4 in a tangential direction into a first-stage cyclone 1 and raw coal entering from a raw coal inlet 2, clean coal is discharged from a first-stage overflow port 3, medium coal and gangue enter a discharging cylinder 5 along with heavy medium suspension, as the discharging cylinder 5 is communicated with a side wall, inner-layer light materials and outer-layer heavy materials can enter the discharging cylinder 5 in a layered manner, the discharging cylinder 5 is divided into a first channel and a second channel by a partition plate 6, the inner-layer light materials enter a second-stage cyclone 8 through the first channel, clean coal and medium coal are obtained after separation by the second-stage cyclone 8, the outer-layer heavy materials enter a third-stage cyclone 12, and medium coal and gangue are obtained after separation by the third-stage cyclone 12.
The novel three-section dense medium cyclone that this embodiment provided, inlayer light material and outer heavy material can the layering get into ejection of compact section of thick bamboo 5, rethread baffle 6 separates inlayer light material and outer heavy material, make inlayer light material get into second section of cyclone 8, can separate out the clean coal that smuggles secretly in the middlings of one section cyclone 1 exhaust, and outer heavy material gets into three sections of cyclone 12 and sorts, clean coal that smuggles in the middlings can be retrieved to a great extent, reduce clean coal loss, improve clean coal yield, increase the economic benefits of coal preparation factory.
The baffle 6 can be fixedly arranged in the discharging cylinder 5 so as to divide the discharging cylinder 5 into a first channel and a second channel, wherein the first channel is communicated with the feeding pipe 9 of the first-stage cyclone 1 and the second-stage cyclone, and the second channel is communicated with the feeding pipe 13 of the first-stage cyclone 1 and the third-stage cyclone.
The baffle 6 can be fixedly connected with the discharging cylinder 5, and can also be movably connected with the discharging cylinder 5.
In an alternative embodiment, one end of the partition 6 is rotatably connected to the outlet end of the discharge vessel 5 and forms a rotation shaft 16, and the partition 6 can be rotated about the rotation shaft 16 to vary the sizes of the first and second passages.
One end of the first channel, which is communicated with the first section of cyclone 1, is an inlet of the first channel, and one end of the first channel, which is communicated with the feeding pipe 9 of the second section of cyclone, is an outlet of the first channel; one end of the second channel, which is communicated with one section of the cyclone 1, is an inlet of the second channel, and one end of the second channel, which is communicated with the feeding pipe 13 of the three sections of the cyclones, is an outlet of the second channel.
In the process of rotating the partition plate 6 around the rotating shaft 16, the sizes of the first channel and the second channel can be changed, the sizes of the inlet of the first channel and the inlet of the second channel can be adjusted, and then the sizes of the materials entering the first channel and the second channel can be distributed, so that the sizes of the materials entering the first channel and the second channel can be adjusted according to the quality of raw coal, and the clean coal carried by the middling coal can be more accurately sorted out.
For example, when the coal quality is normal (clean coal accounts for 60% of raw coal, middling coal accounts for 30% of raw coal, and gangue accounts for 10% of raw coal), the inlet of the first channel and the inlet of the second channel are regulated to be equal in size; when the gangue is more, more materials need to enter the three-section cyclone 12, the feeding amount of the three-section cyclone 12 needs to be increased, and the inlet of the first channel is correspondingly adjusted to be smaller than the inlet of the second channel; when the gangue is less, more materials need to enter the two-stage cyclone 8, the feeding amount of the two-stage cyclone 8 needs to be increased, and the inlet of the first channel is correspondingly adjusted to be larger than the inlet of the second channel.
Wherein, can be that pivot 16 and the exit end fixed connection of ejection of compact section of thick bamboo 5, baffle 6 and pivot 16 rotate to be connected, also can be that baffle 6 and pivot 16 fixed connection, pivot 16 and the exit end rotation connection of ejection of compact section of thick bamboo 5.
After the partition plate 6 rotates to a proper angle, the partition plate 6 needs to be fixed at the position, for example, the rotating shaft 16 is fixedly connected with the partition plate 6, the rotating shaft 16 is rotationally connected with the outlet end of the discharging cylinder 5, two ends of the rotating shaft 16 respectively extend out of the discharging cylinder 5, the partition plate 6 can be fixed at the proper angle by utilizing damping between the rotating shaft 16 and the discharging cylinder 5, the rotating shaft 16 can also be set to be a threaded shaft, after the partition plate 6 rotates to the proper position, two ends of the threaded shaft are respectively connected with nuts in a threaded manner, the threaded shaft is tightly pressed with the discharging cylinder 5 by utilizing the nuts at two ends of the threaded shaft, the threaded shaft is relatively fixed with the discharging cylinder 5, one end of the rotating shaft 16 can also be connected with a motor, the rotating shaft 16 is driven to rotate by utilizing the motor, and the adjusting convenience and precision are high, and after the partition plate 6 rotates to the proper angle, the motor is stopped, the partition plate 6 can be fixed at the position. In addition, the two ends of the rotating shaft 16 respectively extend out of the discharging cylinder 5, so that a user can conveniently rotate the rotating shaft 16 to adjust the angle of the partition plate 6.
The second-stage cyclone 8 further comprises a second-stage overflow port 10 and a second-stage underflow port 11, and the third-stage cyclone 12 further comprises a third-stage overflow port 14 and a third-stage underflow port 15.
The angle of the partition plate 6 is regulated by detecting the low-density material content (floating and sinking test) of the two-section overflow port 10 and the three-section overflow port 14, when the low-density material content flowing out of the two-section overflow port 10 is high, namely more clean coal is entrained in middlings, the partition plate 6 is regulated to enlarge the inlet of the first channel, and the materials discharged from the discharging cylinder 5 of the first-section cyclone 1 are fed into the second-section cyclone 8 as much as possible; when the low-density material content flowing out of the second-stage overflow port 10 is low, namely more gangue is entrained in middling, the adjusting baffle 6 reduces the inlet of the first channel, and the material discharged from the discharge cylinder 5 of the first-stage cyclone 1 is fed into the third-stage cyclone 12 as much as possible.
According to a suspension flow balance calculation formula and a flow distribution design, obtaining:
wherein D is the diameter of the primary cyclone 1; a is that 2 Coefficients, typically 700-800, are taken in this embodiment800; n-index, 2.5; epsilon is a section of discharge flow distribution coefficient; q-flow of the primary cyclone 1; q (Q) 1 -the flow rate of the two-stage cyclone 8; q (Q) 2 Flow rate of the three-stage cyclone 12.
In another alternative embodiment, the partition 6 is fixedly connected to the tapping column 5.
Wherein, baffle 6 can carry out fixed connection through modes such as welding, bonding or joint with ejection of compact section of thick bamboo 5.
When the baffle 6 is fixedly connected with the discharge cylinder 5, in order to achieve a better separation effect, the extending direction of the baffle 6 is parallel to the axial direction of the discharge cylinder 5 (i.e. the baffle 6 is vertically arranged with the end face of the discharge cylinder 5). The extending direction of the baffle 6 is parallel to the axial direction of the discharging barrel 5, so that the inner diameters of the first channel and the second channel are unchanged along the extending direction, and after the inlets of the first channel and the second channel are adjusted to proper sizes, the inner diameters of the first channel and the second channel are matched with the opening sizes of the first channel and the second channel, so that the feeding amount adjustment of the first channel and the second channel is more accurate.
When the baffle 6 is fixedly connected with the discharging barrel 5, the fixed position of the baffle 6 can be determined according to the coal quality, so that the inlet of the first channel and the inlet of the second channel are matched with the coal quality in size.
For example, when the coal quality is normal (clean coal accounts for 60% of raw coal, medium coal accounts for 30% of raw coal, and gangue accounts for 10% of raw coal), the partition plate 6 is arranged in the middle of the discharging cylinder 5; when the gangue is more, more materials need to enter the three-section cyclone 12, the feeding amount of the three-section cyclone 12 needs to be increased, and the inlet of the corresponding first channel is smaller than the inlet of the second channel; when the gangue is less, more materials need to enter the two-stage cyclone 8, the feeding amount of the two-stage cyclone 8 needs to be increased, and the inlet corresponding to the first channel is larger than the inlet of the second channel. And, when baffle 6 and ejection of compact section of thick bamboo 5 swing joint, the regulation principle of baffle 6 is also so.
In order to adjust the fixing position of the partition plate 6, the partition plate 6 and the discharging barrel 5 can be detachably and fixedly connected in a clamping or threaded connection mode, and when the sizes of the inlet of the first channel and the inlet of the second channel need to be changed, the partition plate 6 can be detached and then mounted to the required fixing position.
The end of the partition 6 facing the side wall may have a planar structure or an arc-shaped structure.
Further, the wall surface of the free end of the partition plate 6 facing the inside of the one-section cyclone 1 is of an arc-shaped structure, and the curvature of the arc-shaped structure is the same as that of the inner surface of the one-section cyclone 1.
The free end of the partition plate 6 faces the wall surface inside the cyclone 1 in one section to form an arc structure, and the curvature of the arc structure is the same as that of the inner surface of the cyclone 1 in one section, so that the partition plate 6 can adapt to layering.
Further, the material in the cyclone 1 enters the discharge cylinder 5 along the tangential direction of the side wall of the cyclone 1.
The material in the first section of cyclone 1 is layered with the heavy material under the centrifugal force field of the novel three-section heavy medium cyclone, and the material in the first section of cyclone 1 enters the discharging cylinder 5 along the tangential direction of the side wall, so that the layered state of the light material and the heavy material can be maintained when the material enters the discharging cylinder 5.
Further, the inner diameter of the second stage cyclone 8 and the inner diameter of the third stage cyclone 12 are smaller than the inner diameter of the first stage cyclone 1.
Because the feeding amount of the first-stage cyclone 1 is the largest, the feeding amounts of the second-stage cyclone 8 and the third-stage cyclone 12 are smaller than the first-stage cyclone 1, and therefore, the inner diameters of the second-stage cyclone 8 and the third-stage cyclone 12 are smaller than the inner diameter of the first-stage cyclone 1, so that the inner diameters of the cyclones at all stages are matched with the feeding amounts of the cyclones at all stages.
Further, the central axes of the two-stage cyclone 8 and the three-stage cyclone 12 are on the same straight line, and are all arranged at a preset angle with the central axis of the one-stage cyclone 1.
That is, the central axis of the second-stage cyclone 8 is parallel to the central axis of the third-stage cyclone 12, the included angle between the central axis of the second-stage cyclone 8 and the central axis of the first-stage cyclone is set according to a preset angle, and the central axis of the third-stage cyclone 12 and the central axis of the first-stage cyclone are set according to a preset angle.
The central axes of the two-section swirler 8 and the three-section swirler 12 are on the same straight line, so that the installation angle of the two-section swirler 8 is equal to the installation angle of the three-section swirler 12, and the two-section swirler 8 and the three-section swirler 12 are convenient to install and arrange.
The central shafts of the second-stage cyclone 8 and the third-stage cyclone 12 are arranged at a preset angle with the central shaft of the first-stage cyclone 1, and the installation angle of the second-stage cyclone 8 and the installation angle of the third-stage cyclone 12 are kept at a proper angle, so that clean coal can be separated more accurately, and the gangue can be discharged.
Further, the preset angle is determined according to the coal quality of the raw coal.
The preset angle is determined according to the raw coal quality, so that the preset angle can be adapted to different coal qualities, the clean coal is more accurately sorted, and the gangue is discharged.
In order to determine a preset angle according to the coal quality of raw coal, a first channel is detachably connected with a feeding pipe 9 of a second-stage cyclone, a second channel is detachably connected with a feeding pipe 13 of a third-stage cyclone, and after the coal quality changes and the installation angle needs to be adjusted, the first-stage cyclone 1, the second-stage cyclone 8 and the third-stage cyclone 12 are detached and then are recombined.
For example, for raw coal with high gangue content, the equipment design needs to consider that the inner diameter of the three-stage cyclone 12 needs to be increased, and the installation angle of the three-stage cyclone 12 needs to be increased, which is a mounting mode beneficial to gangue discharge, and the three-stage underflow opening 15 is lower than the three-stage overflow opening 14.
Further, the installation angles of the first-stage cyclone 1, the second-stage cyclone 8 and the third-stage cyclone 12 are all 0-30 degrees.
The installation angles of the first stage cyclone 1, the second stage cyclone 8 and the third stage cyclone 12 can be any suitable angle such as 0 degrees, 10 degrees, 20 degrees or 30 degrees.
The installation angles of the first-stage cyclone 1, the second-stage cyclone 8 and the third-stage cyclone 12 are all 0-30 degrees, so that the separation effect of clean coal can be well ensured, and gangue discharge is facilitated.
Wherein, the installation angle of the first-stage swirler 1 is the included angle between the axis of the first-stage swirler 1 and the horizontal plane, the installation angle of the second-stage swirler 8 is the included angle between the axis of the second-stage swirler 8 and the horizontal plane, and the installation angle of the third-stage swirler 12 is the included angle between the axis of the third-stage swirler 12 and the horizontal plane.
Further, the pipe diameter of the connecting pipe becomes smaller in a direction away from the discharge cylinder 5.
Along the extending direction of the connecting pipe, the pipe diameter of the connecting pipe gradually becomes smaller from one end close to the discharging cylinder 5 to one end far away from the discharging cylinder 5.
Because the diameter of the feeding pipe 9 of the second-stage cyclone is different from that of the first channel, the pipe diameter of the connecting pipe is reduced along the direction away from the discharging barrel 5, so that the feeding pipe 9 of the second-stage cyclone is communicated with the first channel, the diameter of the feeding pipe 13 of the third-stage cyclone is different from that of the second channel, the pipe diameter of the connecting pipe is reduced along the direction away from the discharging barrel 5, and the feeding pipe 13 of the third-stage cyclone is communicated with the second channel.
Further, the first-stage cyclone 1 is a non-pressure heavy medium cyclone, and the second-stage cyclone 8 and the third-stage cyclone 12 are both pressure heavy medium cyclones.
In this embodiment, the first stage cyclone 1 is cylindrical, and the second stage cyclone 8 and the third stage cyclone 12 are both cylindrical and conical.
The first-stage cyclone 1 is a non-pressure heavy medium cyclone, light materials and heavy materials which are layered in the first-stage cyclone 1 respectively enter different cyclones for separation under the separation effect of the partition plate 6, the second-stage cyclone 8 and the third-stage cyclone 12 are all pressure heavy medium cyclones, medium coal and gangue are obtained after the third-stage cyclone 12 is separated, medium coal and clean coal are obtained after the second-stage cyclone 8 is separated, clean coal can be obtained through both the first-stage overflow port 3 and the second-stage overflow port 10, and clean coal can be recovered to a large extent.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. A novel three-stage dense medium cyclone, comprising: the feeding pipes of the two-section cyclone and the three-section cyclone are communicated with the discharging cylinder of the one-section cyclone through connecting pipes;
the separator is arranged in the discharging cylinder along the axial direction and divides the discharging cylinder into a first channel and a second channel, and the separator can divide inner-layer light materials and outer-layer heavy materials so that the inner-layer light materials flow into the two-section cyclone through the first channel and the outer-layer heavy materials flow into the three-section cyclone through the second channel.
2. The novel three-stage dense medium cyclone according to claim 1, wherein one end of the partition plate is rotatably connected to the outlet end of the discharge cylinder and forms a rotation shaft, and the partition plate can rotate around the rotation shaft to change the sizes of the first passage and the second passage.
3. The novel three-stage dense medium cyclone of claim 1, wherein the separator is fixedly connected with the discharge cylinder.
4. A novel three-section heavy medium cyclone according to claim 2 or 3, wherein the wall surface of the free end of the partition plate facing the interior of the one section cyclone is of an arc-shaped structure, and the curvature of the arc-shaped structure is the same as that of the inner surface of the one section cyclone.
5. The novel three-stage dense medium cyclone of claim 4 wherein the inner diameter of the two-stage cyclone and the inner diameter of the three-stage cyclone are both smaller than the inner diameter of the one-stage cyclone.
6. The novel three-stage dense medium cyclone according to claim 4, wherein the central axes of the two-stage cyclone and the three-stage cyclone are on the same straight line and are all arranged at a preset angle with the central axis of the one-stage cyclone.
7. The novel three-stage dense medium cyclone according to claim 6, wherein the preset angle is determined according to raw coal quality.
8. The novel three-stage dense medium cyclone according to claim 7, wherein the installation angles of the first stage cyclone, the second stage cyclone and the third stage cyclone are all 0 ° -30 °.
9. The novel three-stage dense-medium cyclone according to claim 1, wherein the pipe diameter of the connecting pipe becomes smaller in a direction away from the discharge cylinder.
10. The novel three-stage dense medium cyclone of claim 1, wherein the first stage cyclone is a pressureless dense medium cyclone, and the second stage cyclone and the third stage cyclone are both pressurized dense medium cyclones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310846443.1A CN116586209B (en) | 2023-07-11 | 2023-07-11 | Novel three-section heavy medium cyclone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310846443.1A CN116586209B (en) | 2023-07-11 | 2023-07-11 | Novel three-section heavy medium cyclone |
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| DE102004045823A1 (en) * | 2004-09-22 | 2006-03-23 | Voith Paper Patent Gmbh | Process for fractionating an aqueous paper fiber suspension and hydrocyclone for carrying out the process |
| CN201140123Y (en) * | 2007-11-30 | 2008-10-29 | 山东良庄矿业有限公司 | Rotary direction uniformed coal preparation three-product dense media swirl nozzle |
| CN204182498U (en) * | 2014-10-22 | 2015-03-04 | 宁波大学 | A kind of blocking type concentrate cyclone |
| CN206924886U (en) * | 2017-07-21 | 2018-01-26 | 黑龙江宝泰隆新能源新材料研究院 | The device of coal in being extracted in a kind of gangue |
| CN209597406U (en) * | 2019-02-20 | 2019-11-08 | 唐山国选精煤有限责任公司 | A kind of three section of four product heavy-medium cyclone of no press-in material |
| CN211865409U (en) * | 2019-12-16 | 2020-11-06 | 内蒙古蒙西矿业有限公司 | Energy-saving coal washing cyclone |
| CN214717557U (en) * | 2021-02-07 | 2021-11-16 | 威海市正昊矿山设备有限公司 | Double-inlet double-outlet heavy-medium cyclone |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1418734A (en) * | 2002-12-26 | 2003-05-21 | 天地科技股份有限公司唐山分公司 | Heavy medium vortrap, coal separation system and method therefor |
| DE102004045823A1 (en) * | 2004-09-22 | 2006-03-23 | Voith Paper Patent Gmbh | Process for fractionating an aqueous paper fiber suspension and hydrocyclone for carrying out the process |
| CN201140123Y (en) * | 2007-11-30 | 2008-10-29 | 山东良庄矿业有限公司 | Rotary direction uniformed coal preparation three-product dense media swirl nozzle |
| CN204182498U (en) * | 2014-10-22 | 2015-03-04 | 宁波大学 | A kind of blocking type concentrate cyclone |
| CN206924886U (en) * | 2017-07-21 | 2018-01-26 | 黑龙江宝泰隆新能源新材料研究院 | The device of coal in being extracted in a kind of gangue |
| CN209597406U (en) * | 2019-02-20 | 2019-11-08 | 唐山国选精煤有限责任公司 | A kind of three section of four product heavy-medium cyclone of no press-in material |
| CN211865409U (en) * | 2019-12-16 | 2020-11-06 | 内蒙古蒙西矿业有限公司 | Energy-saving coal washing cyclone |
| CN214717557U (en) * | 2021-02-07 | 2021-11-16 | 威海市正昊矿山设备有限公司 | Double-inlet double-outlet heavy-medium cyclone |
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| CN116586209A (en) | 2023-08-15 |
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