CN108201979B - Fine powder separator - Google Patents
Fine powder separator Download PDFInfo
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- CN108201979B CN108201979B CN201810224682.2A CN201810224682A CN108201979B CN 108201979 B CN108201979 B CN 108201979B CN 201810224682 A CN201810224682 A CN 201810224682A CN 108201979 B CN108201979 B CN 108201979B
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- vortex
- mixing
- vortex stabilizing
- centrifugal
- exhaust pipe
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- 239000000843 powder Substances 0.000 title claims abstract description 67
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 79
- 230000002265 prevention Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 16
- 239000007787 solid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B04C5/08—Vortex chamber constructions
- B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber
Landscapes
- Cyclones (AREA)
Abstract
The invention discloses a fine powder separator, which comprises a cylindrical shell (4) and a conical shell (5) which are arranged up and down, wherein an exhaust pipe (2) is sleeved in the cylindrical shell (4), the cylindrical shell (4) is connected with a tangential feed inlet (1), a centrifugal blade layer is arranged between the cylindrical shell (4) and the exhaust pipe (2), the centrifugal blade layer comprises a plurality of centrifugal blades (3), the centrifugal blades (3) are sequentially arranged along the circumferential direction of the cylindrical shell (4), a vortex stabilizing structural member (6) is arranged in the conical shell (5), and the vortex stabilizing structural member (6) comprises a vortex stabilizing rod (7) and a mixing preventing member (8) which are connected with each other. The fine powder separator improves the separation efficiency of the fine powder separator by adding the vortex stabilizing rod and the anti-mixing piece.
Description
Technical Field
The invention relates to the field of powder separation equipment, in particular to a fine powder separator.
Background
The fine powder separator is an important device of a medium-storage type pulverizing system, has the main function of separating powder from a gas-solid system, and is widely applied to industries such as power plants, cement industries, chemical engineering, metallurgy and the like. At present, the fine powder separation technology is a traditional cyclone separation technology, namely, tangential inlet enters, and the powder is separated from the bottom through centrifugal separation. However, the existing separators have the following problems: the separator exhaust pipe is provided with blades and shutters, so that the surrounding separation space is influenced; the centrifugal separation vortex is stable and difficult to control, so that the flow field of the equipment is unstable and the separation efficiency is low; the secondary carrying is serious, so that powder is carried and discharged from the exhaust pipe, the separation efficiency is high, and the powder content in the gas is increased; these will all affect the efficiency of the device. For the coal-fired boiler, the impeller of the powder exhauster of the powder making system is seriously worn, the carbon content of fly ash is large, the consumption of cooling water is excessive, and the like, so that the purposes of energy conservation and emission reduction are achieved.
Chinese patent CN 203448201U, publication date 2014, 2, 6, discloses a fine powder separator for a warehouse-type pulverizing system of a 100 MW-1500 MW coal-fired power plant boiler. The gas and the solid powder enter from a tangential inlet, then centrifugally rotate sequentially through the shell and the cavity, the powder is discharged from a powder discharge port, the gas rotates to enter into an air discharge port for discharge, and the mixing prevention cone plays a role in preventing the powder from being carried for the second time.
However, this fines separator also has the following disadvantages: 1. the position of the anti-mixing part is single, and the position needs to be changed along with the change of the tangential inlet speed; 2. the vortex stabilizing effect is poor, the vortex is easy to break, and the influence and separation of side walls are achieved; 3. when the separation mode is single and the centrifugal force generated by low speed entering is too low, the separation efficiency is low.
Disclosure of Invention
In order to solve the problem of low separation efficiency of the existing fine powder separator, the invention provides the fine powder separator, and the separation efficiency of the fine powder separator is improved by adding a vortex stabilizing rod and an anti-mixing piece.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a fine powder separator includes cylindrical shell and the toper casing that sets up from top to bottom, and cylindrical shell endotheca is equipped with the blast pipe, and cylindrical shell is connected with tangential feed inlet, is equipped with centrifugal blade layer between cylindrical shell and the blast pipe, and this centrifugal blade layer contains a plurality of centrifugal blades, a plurality of centrifugal blades arrange in proper order along cylindrical shell's circumference, are equipped with steady vortex structure spare in the toper casing, and steady vortex structure spare contains interconnect's steady vortex stick and anti-mixing spare.
The central line of cylindrical casing, the central line of conical casing, the central line of blast pipe, steady vortex stick and the central line coincidence of mixing prevention spare, the central line of cylindrical casing sets up along vertical direction, is equipped with two between cylindrical casing and the blast pipe centrifugal blade layer, two centrifugal blade layer sets up from top to bottom, two centrifugal blade layer all is located between the lower extreme of blast pipe and the tangential feed inlet.
The upper end of the centrifugal blade layer positioned above is flush with the lower end of the tangential feed inlet, the lower end of the centrifugal blade layer positioned below is flush with the lower end of the exhaust pipe, the height of the centrifugal blade is 100-2000 mm, the included angle between the centrifugal blade and the horizontal plane is more than 0 DEG and less than 45 DEG, and the included angle between the centrifugal blade in the centrifugal blade layer positioned above and the horizontal plane is less than or equal to the included angle between the centrifugal blade in the centrifugal blade layer positioned below and the horizontal plane.
The cone-shaped shell is internally provided with a plurality of vortex stabilizing structural members, the vortex stabilizing structural members are sequentially arranged along the central line direction of the cone-shaped shell, the vortex stabilizing rod is in an upright state, and the anti-mixing member is positioned at the upper end or the lower end of the vortex stabilizing rod.
The anti-mixing piece is of a truncated cone structure, the center line of the anti-mixing piece coincides with the center line of the vortex stabilizing rod, the top end of the anti-mixing piece faces upwards or downwards, and the diameter of the top end of the anti-mixing piece is equal to the diameter of the vortex stabilizing rod.
The anti-mixing piece is of a conical cylindrical structure, the center line of the anti-mixing piece coincides with the center line of the vortex stabilizing rod, the top end of the anti-mixing piece faces upwards, the anti-mixing piece is sleeved outside the vortex stabilizing rod, the thickness of the wall of the anti-mixing piece is uniform, a through hole is formed in the wall of the anti-mixing piece, and the center line of the through hole is parallel to the center line of the vortex stabilizing rod.
The anti-mixing piece is of a flat cylindrical structure, the center line of the anti-mixing piece coincides with the center line of the vortex stabilizing rod, the outer diameter of the anti-mixing piece is larger than the diameter of the vortex stabilizing rod, a plurality of through holes are formed in the anti-mixing piece and are uniformly arranged along the circumferential direction of the anti-mixing piece, the distance from the through holes to the center line of the anti-mixing piece is larger than the radius of the vortex stabilizing rod, and the center line of the through holes is parallel to the center line of the vortex stabilizing rod.
The vortex stabilizing rod is of a cylindrical structure, a spiral sheet is arranged outside the vortex stabilizing rod, and the spiral direction of the spiral sheet is the same as the rotation direction of the fine powder particles in the conical shell.
The hopper is arranged outside the lower end of the conical shell, the lower end of the lowest vortex stabilizing structural member is positioned 10-500 mm above the lower end of the conical shell, or the lower end of the lowest vortex stabilizing structural member is positioned 10-500 mm below the lower end of the conical shell.
The distance between the upper end of the uppermost vortex stabilizing structural member and the lower end of the exhaust pipe is greater than 100mm, the distance between the upper end of the cylindrical shell and the tangential feed inlet is less than or equal to 500mm, and the distance between the lower end of the exhaust pipe and the tangential feed inlet is greater than 100mm.
The beneficial effects of the invention are as follows:
1. the problem of unstable rotating air flow is solved.
2. Preventing the powder from being discharged from the air outlet due to secondary carrying.
3. The problem of insufficient centrifugal force is solved by multistage separation.
4. The problem of stability vortex is not enough in flexibility is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic diagram of the structure of the fine powder separator described in example 1.
FIG. 2 is a schematic diagram of the structure of the fine powder separator described in example 2.
Fig. 3 is a schematic structural view of the first type of anti-mixing member.
Fig. 4 is a schematic structural view of a second type of anti-mixing member.
Fig. 5 is a schematic structural view of a third anti-mixing member.
Fig. 6 is a schematic structural view of a fourth anti-mixing member.
Fig. 7 is a schematic structural view of a vortex stabilizing structure.
1. Tangential feed ports; 2. an exhaust pipe; 3. centrifugal blades; 4. a cylindrical housing; 5. a conical housing; 6. a vortex stabilizing structural member; 7. a vortex stabilizing rod; 8. an anti-mixing member; 9. a powder outlet; 10. a hopper;
71. a spiral sheet; 81. and a through hole.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides a fine powder separator, includes cylindrical casing 4 and the toper casing 5 that set up from top to bottom, and cylindrical casing 4 endotheca is equipped with blast pipe 2, and cylindrical casing 4 is connected with tangential feed inlet 1, is equipped with centrifugal blade layer between cylindrical casing 4 and the blast pipe 2, and this centrifugal blade layer contains a plurality of centrifugal blades 3, a plurality of centrifugal blades 3 arrange in proper order along cylindrical casing 4's circumference, are equipped with in the toper casing 5 and stabilize vortex structure spare 6, and steady vortex structure spare 6 contains interconnect's steady vortex stick 7 and prevents mixing 8, as shown in fig. 1 and 2.
In the present invention, the cylindrical housing 4 is in an upright state, i.e., the center line of the cylindrical housing 4 is disposed in a vertical direction, and after the mixture of gas and powder enters the cylindrical housing 4 from the tangential feed port 1, the mixture is rotated downward along the inner surfaces of the cylindrical housing 4 and the conical housing 5 in sequence by gravity. The cylindrical housing 4 and the conical housing 5 form a closed cavity, the upper end of the cylindrical housing 4 is in sealing connection with the exhaust pipe 2, the upper end of the exhaust pipe 2 is an outlet of the exhaust pipe 2 for exhausting gas, and the lower end of the exhaust pipe 2 is an inlet of the exhaust pipe 2. The lower end of the conical shell 5 is provided with a powder outlet 9 for discharging powder.
In the present invention, the center line of the cylindrical shell 4, the center line of the conical shell 5, the center line of the exhaust pipe 2, the center line of the vortex stabilizing rod 7 and the center line of the mixing prevention member 8 are coincident, that is, the cylindrical shell 4, the conical shell 5, the exhaust pipe 2 and the vortex stabilizing structural member 6 are all in an upright state, and a plurality of centrifugal blade layers can be arranged between the cylindrical shell 4 and the exhaust pipe 2 and are all positioned between the lower end of the exhaust pipe 2 and the tangential feed inlet 1.
The number of the centrifugal blades 3 in one centrifugal blade layer can be 3-10, the centrifugal blades 3 are uniformly distributed along the circumferential direction of the cylindrical shell 4, and the centrifugal blades 3 further generate centrifugal force. The centrifugal blades 3 are rotated in the same direction as the mixture is rotated in the cylindrical housing 4, and the centrifugal blades 3 do not block the movement of the mixture.
In the invention, a plurality of (1-10) vortex stabilizing structural members 6 are arranged in the conical shell 5, the vortex stabilizing structural members 6 are sequentially arranged along the central line direction of the conical shell 5, the central lines of each vortex stabilizing structural member 6 are overlapped, two adjacent vortex stabilizing structural members 6 can be tightly connected, the vortex stabilizing structural members 7 are in an upright state, the anti-mixing members 8 can be positioned at the upper end or the lower end of the vortex stabilizing rod 7, in particular points, the anti-mixing members 8 are positioned at the upper end or the lower end of the vortex stabilizing rod 7 and can be selected according to the requirements, as shown in fig. 1, 6 vortex stabilizing structural members 6 are arranged in the conical shell 5, all the anti-mixing members 8 are positioned at the lower end of the vortex stabilizing rod 7, or as shown in fig. 2, 6 vortex stabilizing structural members 6 are arranged in the conical shell 5, all the anti-mixing members 8 are positioned at the lower end of the vortex stabilizing rod 7, and all the anti-mixing members 8 are positioned at the upper end of the vortex stabilizing structural members 6.
In the present invention, the anti-mixing member 8 may be implemented in various ways. For example, the anti-mixing member 8 has a truncated cone structure, the center line of the anti-mixing member 8 coincides with the center line of the vortex stabilizing rod 7, the top end of the anti-mixing member 8 faces upward or downward, and the diameter of the top end of the anti-mixing member 8 is equal to the diameter of the vortex stabilizing rod 7, as shown in fig. 3. Or, the mixing preventing member 8 may be a conical cylindrical structure, the center line of the mixing preventing member 8 coincides with the center line of the vortex stabilizing rod 7, the top end of the mixing preventing member 8 faces upwards, the mixing preventing member 8 is sleeved outside the vortex stabilizing rod 7, the thickness of the wall of the mixing preventing member 8 is uniform or nonuniform, a through hole 81 may or may not be formed in the wall of the mixing preventing member 8, and the center line of the through hole 81 is parallel to the center line of the vortex stabilizing rod 7, as shown in fig. 4 and 5. Or, the anti-mixing member 8 may also be a flat cylindrical structure, the center line of the anti-mixing member 8 coincides with the center line of the vortex stabilizing rod 7, the outer diameter of the anti-mixing member 8 is larger than the diameter of the vortex stabilizing rod 7, a plurality of through holes 81 are formed in the anti-mixing member 8, the through holes 81 are uniformly arranged along the circumferential direction of the anti-mixing member 8, the distance from the through holes 81 to the center line of the anti-mixing member 8 is larger than the radius of the vortex stabilizing rod 7, and the center line of the through holes 81 is parallel to the center line of the vortex stabilizing rod 7, as shown in fig. 6.
In the present invention, as shown in fig. 7, the vortex stabilizer bar 7 has a cylindrical structure, the spiral piece 71 is arranged outside the vortex stabilizer bar 7, and the rotation direction of the spiral piece 71 is the same as the rotation direction of the fine powder particles in the conical shell 5. The spiral piece 71 can enable the fluid to run in a certain track, and better enable the mixing prevention piece to block powder, so that the powder separation efficiency is improved.
The operation of the fines separator is described below:
after the mixture of gas and powder enters the cylindrical shell 4 from the tangential feed inlet 1, the powder in the mixture sequentially rotates and moves downwards along the inner surfaces of the cylindrical shell 4 and the conical shell 5 under the action of gravity, and then is discharged from the powder outlet 9 and collected by the hopper 10. The gas in the mixture is introduced from the lower end of the exhaust pipe 2 and then discharged from the upper end of the exhaust pipe 2, as shown in fig. 1 and 2.
Examples of the fines separator that may be employed in actual use are described below:
example 1
The present embodiment includes not only the above technical features, but also the following technical features:
two centrifugal blade layers are arranged between the cylindrical shell 4 and the exhaust pipe 2, the two centrifugal blade layers are arranged up and down, and the two centrifugal blade layers are located between the lower end of the exhaust pipe 2 and the tangential feed inlet 1. The upper end of the centrifugal blade layer positioned above is flush with the lower end of the tangential feed inlet 1, the lower end of the centrifugal blade layer positioned below is flush with the lower end of the exhaust pipe 2, the height of the centrifugal blade 3 is 100-2000 mm, the included angle between the centrifugal blade 3 and the horizontal plane is more than 0 DEG and less than 45 DEG, and the included angle between the centrifugal blade 3 in the centrifugal blade layer positioned above and the horizontal plane is less than or equal to the included angle between the centrifugal blade 3 in the centrifugal blade layer positioned below and the horizontal plane, as shown in figure 1.
In the present embodiment, the lower end of the lowermost vortex stabilizing structure member 6 is located 10mm to 500mm above the lower end of the conical housing 5, that is, the lower end of the lowermost vortex stabilizing structure member 6 is located above the lower end of the conical housing 5, and the distance H1 between the lower end of the lowermost vortex stabilizing structure member 6 and the lower end of the conical housing 5 is 10mm to 500mm.
In the present embodiment, the distance H2 between the upper end of the uppermost vortex stabilizing structure 6 and the lower end of the exhaust pipe 2 is greater than 100mm, the distance H3 between the upper end of the cylindrical housing 4 and the tangential feed inlet 1 is less than or equal to 500mm, and the distance H4 between the lower end of the exhaust pipe 2 and the tangential feed inlet 1 is greater than 100mm.
Example 2
This embodiment is a modification of embodiment 1, and differs from embodiment 1 in that: the lower end of the lowermost vortex stabilizing structure member 6 is located 10 mm-500 mm below the lower end of the conical shell 5, i.e. the lower end of the lowermost vortex stabilizing structure member 6 is located below the lower end of the conical shell 5, and the distance H1 between the lower end of the lowermost vortex stabilizing structure member 6 and the lower end of the conical shell 5 is 10 mm-500 mm, as shown in fig. 2.
Other features of this embodiment may be selectively employed in the features of embodiment 1, and the present invention will not be described in detail for the sake of brevity.
Example 3
In this embodiment, gas and powder enter through the tangential feed inlet 1, pass through the cavity between the cylindrical housing 4 and the exhaust pipe 2, then pass through the conical housing 5, make the gas-solid generate a rotating flow field, then the powder is discharged from the powder outlet 9, the gas and a small amount of fine powder pass through the flat cylindrical or conical mixing preventing piece 8, wherein the conical mixing preventing piece 8 is not provided with a through hole, a small amount of powder is blocked by the mixing preventing piece 8, and the gas exits from the exhaust pipe 2.
When the cone-shaped shell 5 is internally provided with a plurality of vortex stabilizing structural members 6, the taper of the cone-shaped anti-mixing member 8 can be gradually increased or decreased along the direction from top to bottom.
Other features of this embodiment may be selectively employed in the features of embodiment 1, and the present invention will not be described in detail for the sake of brevity.
Example 4
In this embodiment, gas and powder enter through the tangential feed inlet 1 to generate centrifugal force, and pass through the centrifugal blades 3 in the cavity between the cylindrical shell 4 and the exhaust pipe 2 to mainly further enhance the centrifugal force, then pass through the conical shell 5 to enable the gas and the solid to generate a rotating flow field, then the powder is discharged from the powder outlet 9, the gas and a small amount of fine powder pass through the vortex stabilizing rod 7 with a rotating structure, a small amount of powder is blocked by the anti-mixing piece, and the gas exits from the exhaust pipe 2.
Other features of this embodiment may be selectively employed in the features of embodiment 1, and the present invention will not be described in detail for the sake of brevity.
Example 5
In this embodiment, gas and powder enter through the tangential feed inlet 1, pass through the cavity between the cylindrical housing 4 and the exhaust pipe 2, then pass through the conical housing 5, make the gas-solid generate a rotating flow field, then the powder is discharged from the powder outlet 9, the gas and a small amount of fine powder pass through the vortex stabilizing structural member 6 of the orifice plate type mixing prevention piece, a small amount of powder is blocked by the mixing prevention piece, and the gas surrounds the vortex stabilizing rod and passes through the orifice to exit from the exhaust pipe 2.
Other features of this embodiment may be selectively employed in the features of embodiment 1, and the present invention will not be described in detail for the sake of brevity.
Example 6
In this embodiment, gas and powder enter through the tangential feed inlet 1, pass through the cavity between the cylindrical shell 4 and the exhaust pipe 2, then pass through the conical shell 5, make the gas-solid generate a rotating flow field, then the powder is discharged from the powder outlet 9, the gas and a small amount of fine powder pass through the vortex stabilizing rod 7 with a rotating structure (such as a spiral sheet 71), a small amount of powder is blocked by the anti-mixing piece, and the gas exits from the exhaust pipe 2.
Other features of this embodiment may be selectively employed in the features of embodiment 1, and the present invention will not be described in detail for the sake of brevity.
Example 7
In this embodiment, gas and powder enter through the tangential feed inlet 1, pass through the cavity between the cylindrical shell 4 and the exhaust pipe 2, then pass through the conical shell 5, make the gas-solid generate a rotating flow field, then the powder is discharged from the powder outlet 9, the gas and a small amount of fine powder pass through the vortex stabilizing structural member 6 of the conical anti-mixing member 8 with the through hole, a small amount of powder is blocked by the umbrella-shaped anti-mixing member, and the gas surrounds the vortex stabilizing rod 7 and passes through the hole to exit from the exhaust pipe 2.
Other features of this embodiment may be selectively employed in the features of embodiment 1, and the present invention will not be described in detail for the sake of brevity.
The foregoing description of the embodiments of the invention is not intended to limit the scope of the invention, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the invention shall fall within the scope of the patent. In addition, the technical characteristics and technical scheme, technical characteristics and technical scheme can be freely combined for use.
Claims (7)
1. The fine powder separator is characterized by comprising a cylindrical shell (4) and a conical shell (5) which are arranged up and down, wherein an exhaust pipe (2) is sleeved in the cylindrical shell (4), the cylindrical shell (4) is connected with a tangential feed inlet (1), two centrifugal blade layers are arranged between the cylindrical shell (4) and the exhaust pipe (2), the two centrifugal blade layers are arranged up and down, the two centrifugal blade layers are positioned between the lower end of the exhaust pipe (2) and the tangential feed inlet (1), the centrifugal blade layers comprise a plurality of centrifugal blades (3), and the centrifugal blades (3) are sequentially arranged along the circumferential direction of the cylindrical shell (4);
the included angle between the centrifugal blades (3) in the centrifugal blade layer positioned above and the horizontal plane is smaller than or equal to the included angle between the centrifugal blades (3) in the centrifugal blade layer positioned below and the horizontal plane;
the rotation direction of the centrifugal blades (3) is the same as the rotation direction of the mixture in the cylindrical shell (4);
the included angle between the centrifugal blade (3) and the horizontal plane is more than 0 degrees and less than 45 degrees;
a plurality of vortex stabilizing structural members (6) are arranged in the conical shell (5), and the vortex stabilizing structural members (6) comprise vortex stabilizing rods (7) and anti-mixing members (8) which are connected with each other; the vortex stabilizing structural members (6) are sequentially arranged along the central line direction of the conical shell (5), the vortex stabilizing rod (7) is in an upright state, and the anti-mixing member (8) is positioned at the upper end or the lower end of the vortex stabilizing rod (7);
the anti-mixing piece (8) is provided with a plurality of through holes (81), the through holes (81) are uniformly arranged along the circumferential direction of the anti-mixing piece (8), the distance from the through holes (81) to the central line of the anti-mixing piece (8) is larger than the radius of the vortex stabilizing rod (7), and the central line of the through holes (81) is parallel to the central line of the vortex stabilizing rod (7);
the vortex stabilizing rod (7) is of a cylindrical structure, a spiral sheet (71) is arranged outside the vortex stabilizing rod (7), and the spiral direction of the spiral sheet (71) is the same as the spiral direction of the fine powder particles in the conical shell (5).
2. The fines separator as claimed in claim 1, characterized in that the centre line of the cylindrical housing (4), the centre line of the conical housing (5), the centre line of the exhaust pipe (2), the centre line of the vortex-stabilizing rod (7) and the centre line of the anti-mixing member (8) coincide, the centre line of the cylindrical housing (4) being arranged in a vertical direction.
3. The fines separator as claimed in claim 1, wherein the upper end of the centrifugal blade layer lying above is flush with the lower end of the tangential feed inlet (1), the lower end of the centrifugal blade layer lying below is flush with the lower end of the exhaust pipe (2), and the height of the centrifugal blades (3) is 100-2000 mm.
4. The fine powder separator according to claim 1, characterized in that the mixing prevention piece (8) is of a conical cylindrical structure, the center line of the mixing prevention piece (8) coincides with the center line of the vortex stabilizing rod (7), the top end of the mixing prevention piece (8) faces upwards, the mixing prevention piece (8) is sleeved outside the vortex stabilizing rod (7), and the thickness of the cylinder wall of the mixing prevention piece (8) is uniform.
5. The fines separator as claimed in claim 1, characterized in that the anti-mixing member (8) has a flat cylindrical structure, the centre line of the anti-mixing member (8) coincides with the centre line of the vortex stabilizing rod (7), and the outer diameter of the anti-mixing member (8) is larger than the diameter of the vortex stabilizing rod (7).
6. The fines separator as claimed in claim 1, characterized in that the lower end of the conical shell (5) is externally provided with a hopper (10), the lower end of the lowermost vortex-stabilizing structure (6) being located 10-500 mm above the lower end of the conical shell (5), or the lower end of the lowermost vortex-stabilizing structure (6) being located 10-500 mm below the lower end of the conical shell (5).
7. The fines separator as claimed in claim 1, characterized in that the distance between the upper end of the uppermost vortex stabilizing member (6) and the lower end of the exhaust pipe (2) is greater than 100mm, the distance between the upper end of the cylindrical shell (4) and the tangential feed inlet (1) is less than or equal to 500mm, and the distance between the lower end of the exhaust pipe (2) and the tangential feed inlet (1) is greater than 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810224682.2A CN108201979B (en) | 2018-03-19 | 2018-03-19 | Fine powder separator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810224682.2A CN108201979B (en) | 2018-03-19 | 2018-03-19 | Fine powder separator |
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| CN108201979A CN108201979A (en) | 2018-06-26 |
| CN108201979B true CN108201979B (en) | 2024-03-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109772605B (en) * | 2019-01-15 | 2020-10-09 | 南京诚特汽车服务有限公司 | Gas-solid separator for flue gas |
| CN111530645A (en) * | 2020-04-29 | 2020-08-14 | 华电电力科学研究院有限公司 | Stable vortex type multistage cyclone coarse powder separator and working method thereof |
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| CN207680823U (en) * | 2018-03-19 | 2018-08-03 | 中国华电集团科学技术研究总院有限公司 | A kind of pulverized-coal collector |
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