CN118268145A - Device and method for removing small particles in powder collected by cyclone separator - Google Patents
Device and method for removing small particles in powder collected by cyclone separator Download PDFInfo
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- CN118268145A CN118268145A CN202410649151.3A CN202410649151A CN118268145A CN 118268145 A CN118268145 A CN 118268145A CN 202410649151 A CN202410649151 A CN 202410649151A CN 118268145 A CN118268145 A CN 118268145A
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- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 4
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Abstract
The invention discloses a device and a method for removing small particles in powder collected by a cyclone separator, wherein the device comprises the following steps: the secondary air guide ring comprises a plurality of secondary air inlets, each secondary air inlet is provided with a gap, wherein before particles enter a discharge hole of the cyclone separator, the secondary air guide ring utilizes the secondary air inlets to introduce upward air flow, and air is introduced through the gaps to form an air knife, and the air knife tangentially enters the cyclone separator along a secondary air flow channel in the secondary air guide ring; the morphological parameters of the gap, the air speed and the air flow of the air knife meet the following constraint conditions: the air knife does not damage the rotating flow field in the cyclone separator, and the air knife can effectively avoid the removal of large particles in the cyclone separator, and simultaneously break up the particle aggregation and further sort the particles. The invention provides a simple, convenient, economical and feasible solution for simultaneously realizing high recovery rate collection and small particle removal of powder products.
Description
Technical Field
The invention relates to the technical field of gas-solid separation in the aspect of powder, in particular to a device and a method for removing small particles in powder collected by a cyclone separator.
Background
When the mechanical crushing equipment is used for preparing powder, a large number of small particles smaller than 5-10 mu m can be generated. The presence of this fraction of small particles increases the width of the particle size distribution of the particles, in many cases severely affecting the powder properties. For example, in the preparation of powder coatings, the presence of large amounts of such particles can greatly reduce the flowability of the powder, making spraying difficult.
Therefore, in order to improve the powder quality, small particles smaller than 5-10 mu m in the product should be removed as much as possible, and the particle size distribution is reduced.
In the prior art, for products with smaller average particle size, various classifiers are used for removing fine particles in the collecting process; for products with larger average particle size, conventional sieving methods can be used to remove fine particles. Multiple classification operations may further reduce the fine particle content. However, these methods are costly, energy-consuming, complex to operate (e.g., conventional impeller classifiers), and even impossible (e.g., sieving to remove fine particles below 10 μm).
The cyclone separator has a solid particle collecting function, and is a device for collecting entrained particles by rotating an airflow by centrifugal force without any moving parts. The device has simple structure, low cost and higher efficiency, and is widely applied to gas-solid separation operation. However, the conventional cyclone separator has little particle classifying function except that it can remove a very small amount of small particles. While improvements to the cyclone separator have been developed in the art to classify particles, it has the following technical problems: complex design, high cost and complex operation control.
Disclosure of Invention
In order to solve the above technical problems, the present invention discloses a device for removing small particles in powder collected by a cyclone separator, the device comprising:
a secondary air guide ring comprising a plurality of secondary air inlets arranged, each secondary air inlet having a gap, wherein,
Before particles enter a discharge hole of the cyclone separator, the secondary air guide ring utilizes the secondary air inlet to introduce upward air flow, and the upward air flow is introduced through a gap to form an air knife, the air knife tangentially enters the cyclone separator along a secondary air flow passage in the secondary air guide ring,
The morphological parameters of the gap, the air speed and the air flow of the air knife meet the following constraint conditions: the air knife does not damage the rotating flow field in the cyclone separator, and the air knife can effectively avoid the removal of large particles in the cyclone separator, and simultaneously break up the particle aggregation and further sort the particles.
Preferably, the method comprises the steps of,
And a gap is formed between every two adjacent guide wires.
Preferably, the method comprises the steps of,
A plurality of secondary air inlets uniformly and circumferentially distributed along the side surface of the outermost ring of the secondary air guide ring; each gap corresponding to the secondary air inlets extends from the side surface of the outermost ring of the secondary air guide ring to the innermost edge of the secondary air guide ring from outside to inside. Preferably, the method comprises the steps of,
The secondary air guide ring is arranged above the discharge port of the cyclone separator through a flange.
Preferably, the method comprises the steps of,
The secondary air guide ring is arranged right above the discharge hole of the cyclone separator and is tightly pressed by a flange bolt during installation.
Preferably, the method comprises the steps of,
The secondary air guide ring includes: a guide wire bearing ring piece for bearing the guide wire and the guide wire borne by the guide wire bearing ring piece, wherein,
The guide wire bearing ring sheet is a sheet-shaped circular ring with inner and outer diameters,
The guide wire is used for forming a secondary air flow passage.
Preferably, the method comprises the steps of,
The number of the guide wires is multiple,
The guide wire bearing ring piece is a single guide wire bearing ring piece or two opposite guide wire bearing ring pieces.
Preferably, the method comprises the steps of,
When the guide wire bearing ring sheet is a single guide wire bearing ring sheet, a plurality of guide wires are uniformly attached to the guide wire bearing ring sheet along the axial direction,
When the guide wire bearing ring sheets are two guide wire bearing ring sheets, a plurality of guide wires are uniformly attached between the two opposite guide wire bearing ring sheets along the axial direction of the guide wire bearing ring sheets.
Preferably, the method comprises the steps of,
The inner and outer diameters of the guide wire bearing ring piece are the same as the inner and outer diameters of the flange.
Preferably, the method comprises the steps of,
The inner end and the outer end of each guide wire are respectively positioned at the inner diameter edge and the outer diameter edge of the guide wire bearing ring piece.
Preferably, the method comprises the steps of,
The cross section of the guide wire is round, square or other shapes,
The bending direction of the guide wire is convex, straight line and concave.
Preferably, the method comprises the steps of,
The morphological parameters of the gap include: the height of the gap, wherein the height of the gap is equal to the maximum radial dimension of the guide wire. For example, when the cross section of the guide wire is circular, the maximum radial dimension is equal to the guide wire diameter.
Preferably, the method comprises the steps of,
The morphological parameters of the gap include: the width of the gap is equal to the interval between every two guide wires.
Preferably, the method comprises the steps of,
Under the condition that the number, the shape of the cross section, the width of the gap, the bending direction and the angle of the gap are all unchanged, the secondary air guide ring can realize the separation of different particles by adjusting the height of the gap. Preferably, the method comprises the steps of,
The guide wire bearing ring piece and the guide wire are made of hard materials.
Preferably, the method comprises the steps of,
The hard material comprises metal and plastic.
Preferably, the method comprises the steps of,
The number of the guide wires is more than or equal to 4.
Preferably, the method comprises the steps of,
The height of the guide wire is 0.25-3mm.
Preferably, the method comprises the steps of,
The included angle between the radius line passing through the outer end of the guide wire and the radius line passing through the inner end of the guide wire is 0-80 degrees.
In addition, the invention also discloses a method for removing small particles in powder collected by the cyclone separator, which comprises the following steps:
before particles enter a discharge hole of the cyclone separator, upward air flow is introduced by utilizing the secondary air inlet, and is introduced through a gap to form an air knife, the air knife tangentially enters the cyclone separator along a secondary air flow channel,
Wherein, the morphological parameters of the gap, the air speed and the flow of the air knife meet the following constraint conditions: the air knife does not damage the rotating flow field in the cyclone separator, and the air knife can effectively avoid the removal of large particles in the cyclone separator, and simultaneously break up the particle aggregation and further sort the particles.
Compared with the prior art, the invention has the beneficial effects that:
the device and the method for removing the small particles in the powder collected by the cyclone separator are simple in scheme and convenient to operate, and a simple, convenient, economical and feasible method is provided for simultaneously realizing gas-solid separation and particle classification. The invention introduces high-speed low-flow secondary air through gap air inlet, forms an air knife entering the cyclone separator tangentially under the guidance of the flow channel, breaks small particle aggregates through the air knife, removes fine particles through the upward air flow of small flow, and reduces particle size distribution. These special designs are advantageous for improving the removal efficiency of fine particles and improving the yield, and in particular, the advantages of these special designs are:
1. the small particles are crushed and agglomerated through the air knife, so that the agglomerated fine particles are separated, and the removal efficiency of the fine particles is ensured;
2. The small particles are removed through the upward air flow with small flow, so that the large flow upward air flow is prevented from taking away part of large particles, and the product yield is ensured;
3. Through the channel formed between the guide wires, the secondary air is forced to form a tangential air inlet air knife, the rotation direction of the secondary air is ensured, the flow field inside the cyclone separator is not damaged, and the removal efficiency of fine particles and the product yield are improved.
4. The method has the advantages of simple structural design, low manufacturing cost and convenient use, and provides a simple, convenient, economical and feasible method for simultaneously realizing gas-solid separation and particle classification.
In addition, the secondary air adopts gap air inlet, and the air tangentially enters the cyclone separator along a preset flow passage in the secondary air guide ring, so that the internal rotating flow field is not damaged; the air is forced to enter the cyclone separator along the secondary air flow channel in the secondary air flow channel, and the high-air-speed and low-flow air knives in the gaps can effectively break particle agglomeration and prevent large particles from being removed, so that small particles are removed under the condition that recovery rate is not lost as much as possible.
Drawings
FIG. 1 is a schematic view of a cyclone separator and an apparatus for removing small particles from powder collected by the cyclone separator according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of FIG. 1 in another schematic manner;
FIG. 3 is a schematic view of a flow guide wire with different bending directions (e.g., convex, linear, and concave) and different angles (exemplary, 3 angles, for example) as disclosed in various embodiments of the present invention;
The arrow direction in the figure is the airflow direction of the secondary air.
Detailed Description
All of the features disclosed in this specification, except for mutually exclusive features and/or steps, may be combined in any manner. The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, it comprises four parts a) to d), wherein part a) illustrates a typical tangential-direction-induced cyclone separator, comprising an upper cylindrical drum, a lower conical drum, a gas inlet pipe above the cylindrical drum, an exhaust pipe inserted into the upper part of the cylindrical drum, and a discharge port at the bottom of the conical drum. Before the cyclone separator is modified by the device, all particles enter the top of the cyclone separator along the tangential direction along with the airflow under the action of the suction force of the exhaust port, and then flow downwards spirally along the inner wall of the cylindrical barrel under the action of gravity and centrifugal force. A part of the gas is discharged from the cyclone separator through the inner cyclone flow and the residual gas containing particles forms an outer cyclone flow on the inner wall of the cyclone separator. When the cyclone separator is close to the bottom of the separator, the gas flow speed is greatly reduced, and finally the gas is turned into upward movement under the action of the suction force of the exhaust port, so that an internal cyclone flow is formed in the center of the cyclone separator. The inner rotational flow continuously takes away the gas of the outer rotational flow in the movement process, a small amount of small particles subjected to aerodynamic action are taken away along with the gas, and main particles fall into a closed collecting tank or a star discharger or other types of discharger as products to be collected through a conical bottom outlet of the separator under the action of gravity.
See parts b), c), d) of fig. 1, fig. 2 and 3, which illustrate a secondary air deflector ring arranged above the discharge opening, between the upper and lower flanges. The secondary air guide ring consists of one or two guide wire bearing ring sheets and a plurality of guide wires uniformly attached on the single guide wire bearing ring sheet or in the middle of the two guide wire bearing ring sheets. The inner and outer diameters of the guide wire bearing ring sheet are the same as those of the connecting flange of the cyclone separator, and the inner end and the outer end of the guide wire are respectively positioned at the inner diameter edge and the outer diameter edge of the guide wire bearing ring sheet. The secondary air guide ring comprises a plurality of secondary air inlets, each secondary air inlet is provided with a gap, and a gap is formed between every two adjacent guide wires. The channels formed between the guide wires are used for guiding the air inlet direction, and the arrangement direction of the guide wires is consistent with the air flow direction in the cyclone separator. The shape of the guide wire is a straight line or a curve, and the included angle between the radius passing through the outer end of the guide wire and the radius passing through the inner end of the guide wire is 0-80 degrees.
The invention utilizes the secondary air inlet to introduce upward air flow, and utilizes high-speed air flow formed by gap air inlet to break particle agglomeration before particles enter the discharge port and further sort the particles; meanwhile, due to the diversion effect of the diversion ring, air is enabled to enter the cyclone separator in a rotating mode, and the loss of large particles caused by simple upward air flow is avoided. The invention realizes the removal of small particles under the condition of reducing recovery rate loss, reduces the distribution width of particle diameters, improves the product quality, and provides a simple, convenient, economical and feasible method for simultaneously realizing gas-solid separation and particle classification.
Embodiment 1 of the device for removing small particles in powder collected by a cyclone separator and the cyclone separator matched with the device:
On the cyclone separator shown in fig. 1, a secondary air guide ring is added at the discharge hole at the bottom of the conical barrel, the guide ring consists of guide wires and guide wire bearing ring sheets, the inner diameter of the guide wire bearing ring sheets is 58mm, and the outer diameter of the guide wire bearing ring sheets is 80mm. The guide wire bearing ring sheets are uniformly provided with 16 cylindrical guide wires, and the guide wires are placed face down so that the guide wires are attached to the guide wire bearing ring sheets along the axial direction. The inclined direction of the guide wire is consistent with the direction of the air flow in the cyclone separator. The diameter of the guide wire (and thus the height of the gap) was 1mm. The bending direction of the guide wire is convex, and the included angle between the radius passing through the outer end of the cylindrical guide wire and the radius passing through the inner end of the guide wire is 45 degrees.
Embodiment 2 of the apparatus for removing small particles from powder collected by a cyclone separator and the cyclone separator matched with the apparatus of the invention:
The remaining parameters were the same as in example 1 except for the following parameters: the guide wire bearing ring sheets are uniformly provided with 8 square guide wires, the diameter of each guide wire is 1.5mm, each guide wire is in a straight shape, and the included angle between the radius passing through the outer end of each guide wire and the radius passing through the inner end of each guide wire is 70 degrees.
Embodiment 3 of the apparatus for removing small particles from powder collected by a cyclone separator and the cyclone separator matched with the apparatus of the invention:
The remaining parameters were the same as in example 1 except for the following parameters: 12 square guide wires are uniformly arranged on the guide wire bearing ring piece, the diameter of each guide wire is 0.5mm, the bending direction of each guide wire is convex, and the included angle between the radius passing through the outer end of each guide wire and the radius passing through the inner end of each guide wire is 30 degrees.
Embodiment 4 of the apparatus for removing small particles from powder collected by a cyclone separator and the cyclone separator matched with the apparatus of the invention:
The remaining parameters were the same as in example 1 except for the following parameters: the diameter of the guide wire is 0.7mm, the guide wire is concave, and the included angle between the radius passing through the outer end of the guide wire and the radius passing through the inner end of the guide wire is 20 degrees.
Further, through experiments, the diameter of the guide wire can be 0.25-3mm, and the included angle between the radius passing through the outer end of the guide wire and the radius passing through the inner end of the guide wire can be 0-80 degrees. As described above, in the invention, the morphological parameters of the gap, the air speed and the air flow of the air knife can meet the following constraint conditions: the air knife does not damage the rotating flow field in the cyclone separator, and the air knife can effectively prevent large particles in the cyclone separator from being removed, and meanwhile, the particles are crushed in a conglomerate mode and are further sorted, so that in a specific application scene, various parameters such as proper diameter of the guide wire and the like can be selected according to requirements.
Embodiment 5 of the apparatus for removing small particles from powder collected by a cyclone separator and a cyclone separator matched with the apparatus for removing small particles from powder:
the remaining parameters were the same as in example 1 except for the following parameters: the diameter of the guide wire is 3mm, the outer diameter of the guide wire bearing ring piece is 188mm, and the inner diameter is 134mm.
It should be noted that, the morphological parameters of the gap include: the height of the gap, wherein the height of the gap is equal to the maximum radial dimension of the guide wire. For example, when the cross section of the guide wire is circular, the maximum radial dimension is equal to the guide wire diameter.
Preferably, the method comprises the steps of,
The morphological parameters of the gap include: the width of the gap is equal to the interval between every two guide wires.
Preferably, the method comprises the steps of,
Under the condition that the number, the shape of the cross section, the width of the gap, the bending direction and the angle of the gap are all unchanged, the secondary air guide ring can realize the separation of different particles by adjusting the height of the gap.
Application example 1
A small air classifying mill was used, with the end connected to the apparatus of example 1 and its associated cyclone. The feeding material is polyester paint flakes with the diameter of 5-8 mm. Polyester coarse powder coating is prepared at a certain main grinding rotating speed and classifier frequency.
Comparative application example 1-1
A small air classifying mill was used, with the end connected to the apparatus of example 1 and its associated cyclone separator, but with the removal of the guide wire. The raw materials and the operation conditions were the same as in application example 1.
Comparative application examples 1-2
A small air classifier mill was used, terminated with a cyclone of the same size as the cyclone mentioned in example 1 but without the use of the apparatus according to the previous embodiments of the invention. The raw materials and the operation conditions were the same as in application example 1.
Application example 2
A small air classifying mill was used, with the end connected to the apparatus of example 2 and its associated cyclone. The feeding material is polyester paint flakes with the diameter of 5-8 mm. Polyester fine powder particles are prepared at a certain main grinding rotating speed and classifier frequency.
Comparative application example 2
A small air classifier mill was used, terminated with a cyclone of the same size as the cyclone mentioned in example 2 but without the use of the apparatus according to the previous embodiments of the invention. The raw materials and the operation conditions were the same as in application example 2.
Application example 3
A small air classifier mill was used, terminated with the cyclone separator of example 3. The feed was an epoxy coating with a median particle size of about 37 μm. The main mill and the classifier maintain lower rotation speed, so that the main mill and the classifier have no crushing function, and particles can pass through the classifier of the mill and all enter the cyclone separator, so that the effect of the invention on removing superfine powder in coarse powder coating particle products is independently examined.
Comparative application example 3
A small air classifier mill was used, terminated with a cyclone of the same size as the cyclone mentioned in example 3 but without the use of the apparatus according to the previous embodiments of the invention. The raw materials and the operation conditions were the same as in application example 3.
Application example 4
A small air classifying mill was used, with the end connected to the apparatus of example 4 and its associated cyclone. The feed was an epoxy coating with a median particle size of about 19 μm. The main mill and the classifier maintain lower rotation speed, so that the main mill and the classifier have no crushing function, and particles can pass through the classifier of the mill and all enter the cyclone separator, so that the effect of the invention on removing superfine powder in fine powder coating particle products is independently examined.
Comparative application example 4-1
A small air classifying mill was used with the end connected to the apparatus of example 4 and its associated cyclone, but with the guide wire removed. The raw materials and the operation conditions were the same as in application example 4.
Comparative application example 4-2
A small air classifier mill was used, terminated with a cyclone of the same size as the cyclone mentioned in example 4 but without the use of the apparatus according to the previous embodiments of the invention. The raw materials and the operation conditions were the same as in application example 4.
Application example 5
A production type air classifying mill is selected, and the end of the air classifying mill is connected with the device of the embodiment 5 and a cyclone separator matched with the device. The feeding material is polyester paint flakes with the diameter of 5-8 mm. Polyester fine powder particles are prepared at a certain main grinding rotating speed and classifier frequency.
Comparative application example 5
A production air classifier mill was used, with a cyclone connected at the end, which was the same size as the cyclone mentioned in example 5 but without the use of the apparatus according to the previous examples of the invention. The raw materials and the operation conditions were the same as in application example 5.
The effect of cyclone modification is represented by comparing the small particle size, particle size distribution and recovery of the product under different conditions. In Table 1, D 10 represents 10% of the total volume of the particles, D 50 represents 50% of the particles having a particle size greater than or less than this value, and D 90 represents 90% of the total volume of the particles. Particle size Span span= (D 90-D10）/D50 is used to represent particle size distribution in order to fully verify the classification effect of cyclone separator, in the present invention, both flake and powder feeding are adopted, and the products are controlled to be examined in the range of coarse powder and fine powder particles respectively.
TABLE 1
As shown in table 1, taking application example 1, comparative application example 1-2 as examples, the apparatus and method of the present invention, application example 1 has excellent effect of removing ultra fine particles compared to comparative application example 1-2, D 10 representing small particles are all raised for various raw materials, span representing particle size distribution is greatly reduced, and the magnitude of recovery rate reduction is within an acceptable range; while comparative application example 1-1, while having an increased d 10 and a reduced Span compared to comparative application example 1-2, the recovery rate is reduced to a greater extent, and the cost is significantly increased, because of the greater waste; and Span of application example 1 is the lowest among application example 1, comparative application example 1-1, and comparative application example 1-2, indicating that the classification effect is the best. Taking application example 1 and comparative application example 1-1 as examples, compared with the application scheme of carrying ring sheets with diversion wires and secondary air intake without diversion wires, the device and the method provided by the invention have the advantages that the obtained particle distribution is narrower, and the product recovery rate is higher. In summary, the invention reduces the distribution width of particles, realizes the classification of particles and reduces the yield loss of conventional equipment caused by secondary air classification on the basis of not increasing extra energy consumption by a simple and low-cost scheme.
The above-described embodiments of the present invention. The present invention is not limited to the above embodiments, and any person who can learn about the structural changes made under the teaching of the present invention falls within the scope of protection of the present invention if the present invention has the same or similar technical solutions.
Claims (10)
1. An apparatus for removing small particles from powder collected by a cyclone separator, the apparatus comprising:
a secondary air guide ring comprising a plurality of secondary air inlets arranged, each secondary air inlet having a gap, wherein,
Before particles enter a discharge hole of the cyclone separator, the secondary air guide ring utilizes the secondary air inlet to introduce upward air flow, and the upward air flow is introduced through a gap to form an air knife, the air knife tangentially enters the cyclone separator along a secondary air flow passage in the secondary air guide ring,
The morphological parameters of the gap, the air speed and the air flow of the air knife meet the following constraint conditions: the air knife does not damage the rotating flow field in the cyclone separator, and the air knife can effectively avoid the removal of large particles in the cyclone separator, and simultaneously break up the particle aggregation and further sort the particles.
2. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
A plurality of secondary air inlets uniformly and circumferentially distributed along the side surface of the outermost ring of the secondary air guide ring; each gap corresponding to the secondary air inlets extends from the side surface of the outermost ring of the secondary air guide ring to the innermost edge of the secondary air guide ring from outside to inside.
3. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
The secondary air guide ring is arranged above the discharge port of the cyclone separator through a flange.
4. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
The secondary air guide ring includes: a guide wire bearing ring piece for bearing the guide wire and the guide wire borne by the guide wire bearing ring piece, wherein,
The guide wire bearing ring sheet is a sheet-shaped circular ring with inner and outer diameters,
The guide wire is used for forming a secondary air flow passage.
5. The apparatus of claim 4, wherein the device comprises a plurality of sensors,
The number of the guide wires is multiple,
The guide wire bearing ring piece is a single guide wire bearing ring piece or two opposite guide wire bearing ring pieces.
6. The apparatus of claim 5, wherein the device comprises a plurality of sensors,
When the guide wire bearing ring sheet is a single guide wire bearing ring sheet, a plurality of guide wires are uniformly attached to the guide wire bearing ring sheet along the axial direction,
When the guide wire bearing ring sheets are two guide wire bearing ring sheets, a plurality of guide wires are uniformly attached between the two opposite guide wire bearing ring sheets along the axial direction of the guide wire bearing ring sheets.
7. The apparatus of claim 4, wherein the device comprises a plurality of sensors,
The inner and outer diameters of the guide wire bearing ring piece are the same as the inner and outer diameters of the flange.
8. The apparatus of claim 6, wherein the device comprises a plurality of sensors,
The inner end and the outer end of each guide wire are respectively positioned at the inner diameter edge and the outer diameter edge of the guide wire bearing ring piece.
9. The apparatus of claim 4, wherein the device comprises a plurality of sensors,
The cross section of the guide wire is round, square or other shapes,
The bending direction of the guide wire is convex, straight line and concave.
10. A method of removing small particles from powder collected by a cyclone separator, the method comprising the steps of:
before particles enter a discharge hole of the cyclone separator, upward air flow is introduced by utilizing the secondary air inlet, and is introduced through a gap to form an air knife, the air knife tangentially enters the cyclone separator along a secondary air flow channel,
Wherein, the morphological parameters of the gap, the air speed and the flow of the air knife meet the following constraint conditions: the air knife does not damage the rotating flow field in the cyclone separator, and the air knife can effectively avoid the removal of large particles in the cyclone separator, and simultaneously break up the particle aggregation and further sort the particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410649151.3A CN118268145A (en) | 2024-05-24 | 2024-05-24 | Device and method for removing small particles in powder collected by cyclone separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410649151.3A CN118268145A (en) | 2024-05-24 | 2024-05-24 | Device and method for removing small particles in powder collected by cyclone separator |
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