Cyclonic separation system

Abstract

The application provides a cyclone separation system, which comprises a cyclone separator, a dust catcher and a fan, and the cyclone separator comprises a cylinder and a dust hopper, the cylinder is provided with a feeding pipe, the dust hopper is provided with a back-blowing device, and the bottom of the dust hopper is communicated with a first discharging pipe; the dust catcher is communicated with the cyclone separator through a conveying pipeline, the dust catcher is provided with a filtering device, the dust catcher is provided with a pipeline communicated with the fan, and the bottom of the dust catcher is communicated with a second discharging pipe. The cyclone separator and the dust catcher are communicated, and the fan is communicated with the cyclone separator and the dust catcher; the back-blowing device forms an upward cyclone at the dust hopper, which can blow away the material and the fine powder in the cyclone separator, and the fine powder is conveyed into the dust catcher through the conveying pipeline under the action of the fan and is filtered by the filtering device. The back-blowing device can effectively blow away the material and the fine powder, so that the material and the fine powder are separated, the fine powder is prevented from adhering to the material, the quality of the material processing and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a separation system, in particular to a cyclone separation system. BACKGROUND

[0002] The material crushed by the fluidized bed jet mill is under the action of centrifugal force of the classification wheel and suction force of the fan, and the qualified material enters the cyclone separator, and the fine powder is sucked into the dust catcher. However, due to the different viscosities of the materials, some types of materials have high viscosity or are easy to form clusters, and the fine powder is easy to adhere to the material or the wall of the cyclone separator. The existing cyclone separation system cannot separate the material and the fine powder, so that the amount of fine powder sucked out is small, and the fine powder on the material is more, which greatly affects the subsequent material processing, thereby resulting in poor product quality. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a cyclone separation system which can separate the fine powder from the material and avoid the fine powder adhering to the material, thereby improving the product quality.

[0004] The cyclone separation system according to the embodiment of the present application comprises: a cyclone separator comprising a cylinder and a hopper, the cylinder is provided with a feeding pipe, the hopper is provided with a back-blowing device, and the bottom of the hopper is communicated with a first discharging pipe; a dust catcher which is communicated with the cyclone separator through a conveying pipeline, the dust catcher is provided with a filtering device, the dust catcher is communicated with a fan through a pipeline, and the bottom of the dust catcher is communicated with a second discharging pipe.

[0005] The cyclone separation system according to the embodiment of the present application has at least the following beneficial effects: the cyclone separator and the dust catcher of the present application are communicated and communicated with the fan, the cyclone separation comprises a cylinder and a hopper, the back-blowing device is arranged in the hopper, the back-blowing device forms an upward upward flow at the hopper, which can blow away the material and the fine powder entering the cyclone separator, the material falls into the first discharging pipe after passing through the hopper, the fine powder enters the dust catcher through the conveying pipeline under the suction force of the fan, the filtering device filters the gas, and the fine powder is deposited and collected by the dust catcher. The filtering device filters the gas, which can effectively prevent the fine powder from flowing into the fan with the gas and being discharged, causing pollution. The material is collected at the first discharging pipe, and the second discharging pipe is used to collect the fine powder. The back-blowing device can effectively blow away the material and the fine powder, separate the material and the fine powder, avoid the fine powder adhering to the material, improve the quality of the subsequent material processing process, and thus improve the product quality of the material processing.

[0006] According to some embodiments of the present application, the conveying pipeline is a retractable exhaust pipe. The conveying pipeline of this scheme is a retractable exhaust pipe, which can reduce the gas flow, accelerate the gas flow rate, realize the rapid separation of the fine powder and the material, and improve the separation rate.

[0007] According to some embodiments of the present application, the back-blowing device has three, and is uniformly arranged in the ash bucket. The back-blowing device of this scheme has three, and is uniformly arranged in the ash bucket, so that the gas back-blown by the back-blowing device does not weaken the back-blowing effect by affecting each other, and can jointly form an upward cyclone in the center of the ash bucket.

[0008] According to some embodiments of the present application, the included angle between adjacent back-blowing devices is 120°.

[0009] According to some embodiments of the present application, the cyclone separator further comprises an adjusting valve for adjusting the air pressure of the back-blowing device, and the adjusting valve is connected with the back-blowing device. This scheme adjusts the air pressure of the back-blowing device by setting the adjusting valve, and adjusts the size of the cyclone by adjusting the size of the air pressure, and controls the blowing amount of the fine powder.

[0010] According to some embodiments of the present application, the cyclone separator further comprises a first discharge valve, and the first discharge valve comprises two, and the two first discharge valves are arranged on the first discharge pipeline. This scheme realizes the closed state of the entire cyclone separation system by opening and closing the first discharge valve, and avoids the change of the pressure of the cyclone separation system. When the cyclone separation system is running, the upper first discharge valve is opened, and the lower first discharge valve is kept closed, so that the material falls into the first discharge pipeline through the ash bucket; and closing the upper first discharge valve and opening the lower first discharge valve can collect the material after the material passes through the first discharge pipeline.

[0011] According to some embodiments of the present application, a sampling port is arranged on the first discharge pipeline, and the sampling port is located between the two first discharge valves. This scheme sets a sampling port between the two first discharge valves, which can sample the material falling into the first discharge pipeline to detect the quality of the material.

[0012] According to some embodiments of the present application, the dust removal collector further comprises a Venturi tube, and the Venturi tube is located at the top of the dust removal collector and arranged in the gap of the filtering device. This scheme sets a Venturi tube in the dust removal collector, which can change the airflow in the pipeline of the cyclone separation system from thick to thin, accelerate the airflow rate, enhance the negative pressure in the cyclone separation system, increase the suction, realize the rapid separation of the fine powder, and improve the separation rate.

[0013] According to some embodiments of the present application, the dust catcher further comprises a second discharge valve, and the two second discharge valves are arranged on the second discharge pipe. This scheme can keep the whole cyclone separation system closed by opening and closing the second discharge valve, so as to avoid the change of the pressure of the cyclone separation system. When the upper second discharge valve is opened and the lower second discharge valve is closed, the fine powder can fall into the second discharge pipe; and when the upper second discharge valve is closed and the lower second discharge valve is opened, the fine powder can be collected after passing through the second discharge pipe for reuse.

[0014] According to some embodiments of the present application, the cylinder is provided with a first pneumatic knocking hammer. This scheme can prevent the fine powder from adhering to the cylinder wall of the cylinder, and effectively avoid the bridging phenomenon.

[0015] According to some embodiments of the present application, the dust catcher is provided with a second pneumatic knocking hammer. This scheme can prevent the fine powder from adhering to the dust catcher, and effectively avoid the bridging phenomenon during discharging.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent in part from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a schematic diagram of the cyclone separation system of the embodiment of the present application.

[0019] Figure 2 It is a structural schematic diagram of the cyclone separation system of the embodiment of the present application.

[0020] Figure 3 It is a structural schematic diagram of the cyclone separation system of the embodiment of the present application.

[0021] Figure 4 It is a structural schematic diagram of the dust catcher of the embodiment of the present application.

[0022] LIST OF REFERENCE NUMERALS

[0023] Cyclone separator 100, cylinder 110, hopper 120, feed pipe 130, blowback device 140, first discharge pipe 150, sampling port 151, first discharge valve 160, first pneumatic knocking hammer 170.

[0024] A dust collector 200, a filter device 210, a second discharge pipe 220, a venturi 230, a second discharge valve 240, a second pneumatic hammer 250.

[0025] A conveying pipe 300.

[0026] A fan 400.

[0027] A fluidized bed jet mill 500.

[0028] A filter 600. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which like numerals indicate like elements or elements having the same or similar function throughout the several views. The embodiments described below are exemplary only, and are not to be construed as limiting the present application.

[0030] In the description of the present application, it is to be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, outer, inner and the like is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0032] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0033] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings.

[0034] The following description refers to the accompanying drawings. Figure 1 and Figure 2 A cyclone separation system is described.

[0035] As Figure 1 and Figure 2As shown, the cyclone separation system according to an embodiment of the present invention includes a cyclone separator 100 and a dust collector 200.

[0036] The cyclone separator 100 includes a cylinder 110 and a dust hopper 120. A feed pipe 130 is installed on the cylinder 110, and a back-blowing device 140 is installed inside the dust hopper 120. A first discharge pipe 150 is connected to the bottom of the dust hopper 120. A dust collector 200 is connected to the cyclone separator 100 via a conveying pipe 300. A filter device 210 is installed inside the dust collector 200. The dust collector 200 is connected to a fan 400 via a pipe, and a second discharge pipe 220 is connected to the bottom of the dust collector 200.

[0037] The cyclone separator 100 has a feed pipe 130 connected to the fluidized bed air jet mill 500. The cyclone separator 100 is connected to the dust collector 200 through the conveying pipe 300. The dust collector 200 is connected to the fan 400 through the pipe. The filter device 210 is located between the conveying pipe 300 and the pipe connected to the fan 400. After being pulverized in the fluidized bed air jet mill 500, the material is subjected to centrifugal force from the classifier wheel and suction force from the blower 400. Larger particles are returned to the fluidized bed air jet mill 500 for further pulverization, while smaller, qualified particles enter the cyclone separator 100 through the feed pipe 130. The swirling flow caused by the gas inside the cyclone separator 100 drives the material to rotate and gain radial acceleration. Under the action of centrifugal force, the fine powder and material collide with the cylinder wall 110 of the cyclone separator 100 and are separated by the back-blowing device 140. After colliding with the cylinder wall 110, the material loses inertia, falls, and is collected by the ash hopper 120. After passing through the ash hopper 120, the material falls into the first discharge pipe 150. Under the negative pressure of the fan 400 and the back-blowing of the back-blowing device 140, the micro powder, due to its relatively slow movement speed, is carried by the airflow to the upper part of the cyclone separator 100. The micro powder, along with the gas flow, enters the dust collector 200 through the conveying pipe 300 and is filtered by the filter device 210 located above the dust collector 200. After the micro powder is filtered, the gas enters the fan 400 through the pipe and is discharged.

[0038] like Figure 1 As shown in this embodiment, a filter 600 is also provided between the dust collector 200 and the fan 400. After the gas flows out of the dust collector 200, it passes through the filter 600. The filter 600 filters the gas again, and then the gas enters the fan 400 through the pipeline and is discharged.

[0039] In the cyclone separation system, the gas flow direction is as follows: after exiting the fluidized bed jet mill 500, the gas passes sequentially through the cyclone separator 100, the dust collector 200, the filter 600, and the fan 400. Finally, the gas is discharged from the fan 400.

[0040] According to the cyclone separation system of the embodiment of the present application, the material after being crushed by the fluidized bed jet mill 500 enters the cyclone separator 100 through the feeding pipe 130, the material and the fine powder are dispersed under the back blowing of the back blowing device 140, and the fine powder is drawn into the dust catcher 200 with the airflow under the suction of the fan 400, the fine powder in the airflow is filtered by the filtering device 210, and the fine powder is deposited and collected in the dust catcher 200, the first discharging pipe 150 collects the falling material, and the second discharging pipe 220 collects the fine powder filtered by the filtering device 210, the gas flows out from the top of the dust catcher 200 through the pipe, enters the fan 400 after passing through the filter 600, and is discharged from the fan 400, which can effectively avoid the fine powder from being discharged from the fan 400 with the airflow, thereby causing air pollution.

[0041] According to the cyclone separation system of the embodiment of the present application, the material and the fine powder are blown apart by the upward rotational flow formed by the back blowing of the back blowing device 140, the fine powder is prevented from adhering to the material, the quality of the subsequent material processing procedure is improved, and thus the quality of the product processed by the material is improved.

[0042] The cyclone separation system of the present application is used for the separation of the ternary positive electrode material of the lithium ion battery and the fine powder, especially the ternary positive electrode material with high viscosity or easy to form a group, when the material adheres to more fine powder, the specific surface area of the material is large, and when the material is coated and assembled into the lithium ion battery, the flowability is poor or even cannot be coated, meanwhile, the more fine powder in the material also has a great influence on the subsequent processing and production procedures such as secondary coating, thereby affecting the quality of the lithium ion battery, and thus the cyclone separation system of the present application can effectively disperse the material and the fine powder, improve the quality of the material, and thus improve the quality of the product. It can be understood that the mill system 100 of the present application can also be used for other types of materials.

[0043] Please refer to Figure 2 In some embodiments of the present application, the conveying pipe 300 is an inner-contracted exhaust pipe. In the present embodiment, the conveying pipe 300 is an inner-contracted exhaust pipe, the pipe near the one end of the inner-contracted exhaust pipe close to the cyclone separator 100 is in a contracted state, is in a shape of narrow at the bottom and wide at the top, and the pipe opening diameter of the air inlet end of the inner-contracted exhaust pipe is smaller than the diameter of other positions of the inner-contracted exhaust pipe. Since the air flow rate passing through the inner-contracted exhaust pipe is reduced, the air flow rate is accelerated, the separation of the fine powder and the material is fast, and the separation rate and the speed of drawing out the fine powder are improved. The selection of the diameter of the conveying pipe 300 has an influence on the separation rate, when the ratio of the diameter of the conveying pipe 300 to the diameter of the upper part of the cylinder body 110 of the cyclone separator 100 is 0.4, the separation efficiency can be improved, and the separation rate is maximum.

[0044] The material of the inner lining of the cyclone separator 100, the dust catcher 200 and the conveying pipe 300 and other components in contact with the material is a pressure-resistant and wear-resistant ceramic material, which can prevent the material from being abraded.

[0045] Please refer to Figure 2 and Figure 3 In some embodiments of the present application, the back-blowing devices 140 are three, and the back-blowing devices 140 are uniformly arranged in the ash bucket 120. The back-blowing device 140 is a back-blowing nozzle, and is uniformly arranged in the ash bucket 120, and the included angle between adjacent back-blowing devices 140 is 120°. The uniformly arranged back-blowing devices 140 can make the back-blowing devices 140 not weaken the back-blowing effect by mutual influence when back-blowing, but interact to form an upward rotational flow in the center of the ash bucket 120, effectively disperse the material and the fine powder, and blow the fine powder to the upper side of the cyclone separator 100. Under the action of the upward rotational flow formed by the back-blowing devices 140, the material will fall due to its large weight, and the fine powder attached to the material and some other fine powder will be blown up due to their small weight, and will be sucked into the dust catcher 200 for filtration under the action of the fan 400 and the conveying pipe 300.

[0046] Please refer to Figure 2 and Figure 3 In some embodiments of the present application, the cyclone separator 100 further comprises an adjusting valve (not shown in the figure) for adjusting the air pressure of the back-blowing device 140, and the adjusting valve is connected with the back-blowing device 140. The adjusting valve can be used to adjust the air pressure of the back-blowing device 140, and can control the air pressure of the back-blowing device 140 according to the actual production needs (such as the characteristics of the material and other factors), to ensure that the upward rotational flow formed by the back-blowing of the back-blowing device 140 can disperse the material and the fine powder.

[0047] Please refer to Figure 2 and Figure 3In some embodiments of the present application, the cyclone separator 100 further comprises a first discharge valve 160, and two first discharge valves 160 are arranged on the first discharge pipe 150. Since pipeline pressure is an important parameter for the cyclone separation system, the pipeline pressure should be kept in a relatively stable state during the operation of the cyclone separation system, and therefore the cyclone separation system should be kept in a closed state during the operation to avoid large changes in the pipeline pressure. In this embodiment, the first discharge valve 160 is a double butterfly valve, and the two first discharge valves 160 cooperate with each other to keep the entire cyclone separation system in a closed state. When the cyclone separation system is not running, both of the first discharge valves 160 are in a closed state. When the cyclone separation system is running, the first discharge valve 160 located at the top is opened, and the first discharge valve 160 located at the bottom remains closed. After the cyclone separator 100 separates the material and the fine powder, the material enters the first discharge valve 160 through the ash bucket 120. If it is necessary to collect and store the material, the first discharge valve 160 located at the top is closed first, and then the first discharge valve 160 located at the bottom is opened. Since the first discharge pipe 150 is connected to a material storage bin, after the first discharge valve 160 located at the bottom is opened, the material can enter the material storage bin through the first discharge pipe 150. By opening and closing the two first discharge valves 160, the material can be successfully collected and stored, and the pipeline pressure can be kept in a relatively stable state during the operation of the cyclone separation system.

[0048] Please refer to Figure 2 and Figure 3 In some embodiments of the present application, a sampling port 151 is arranged on the first discharge pipe 150, and the sampling port 151 is located between the two first discharge valves 160. After the cyclone separator 100 separates the material and the fine powder, the material enters the first discharge valve 160 through the ash bucket 120, and the material can be sampled through the sampling port 151 to detect whether the degree of crushing of the material meets the crushing requirements.

[0049] Please refer to Figure 2 and Figure 3 In some embodiments of the present application, a first pneumatic knocking hammer 170 is arranged on the cylinder body 110. In this embodiment, there are two first pneumatic knocking hammers 170 located on both sides of the cylinder body 110. The first pneumatic knocking hammer 170 can adjust the size of the knocking force by adjusting the air pressure, so as to shake off the fine powder adhering to the cylinder wall of the cylinder body 110 and prevent the occurrence of the bridging phenomenon. The shaken-off fine powder can enter the dust collector 200 through the conveying pipeline 300 under the action of the back-blowing device 140 and be filtered.

[0050] Please refer to Figure 2 and Figure 4In some embodiments of the present application, the dust catcher 200 further comprises a Venturi tube 230, which is located at the top of the dust catcher 200 and arranged in the gap of the filter device 210. In this embodiment, the filter device 210 is fixedly installed above the inside of the dust catcher 200, the filter device 210 is a paper-folding type filter, and the filter device 210 has a plurality of Venturi tubes 230 arranged in the gap of each filter device 210. Specifically, the top of the dust catcher 200 is in a cylindrical structure, the filter device 210 has a plurality of and covers the entire top of the dust catcher 200 according to the top structure of the dust catcher 200, and the filter device 210 covers the top of the dust catcher 200 in a cylindrical structure. The filter device 210 adopts a paper-folding type filter, each paper-folding type filter has a gap, and the Venturi tube 230 is arranged in each gap. After the fine powder is filtered by the filter device 210, the gas flows out from the gas outlet end of the Venturi tube 230 after entering the Venturi tube 230, and then flows to the filter 600 and the fan 400 through the pipeline. Through the action of the Venturi tube 230, the pipeline gas flow of the cyclone separation system can be changed from thick to thin, the gas flow rate can be accelerated, the negative pressure in the system can be enhanced, the suction force can be increased, and the extraction speed of the fine powder can be accelerated.

[0051] The dust catcher 200 is further provided with a pulse back-flushing dust remover (not shown in the figure), which can introduce gas into the dust catcher 200 to clean the dust catcher 200 by the gas, so as to avoid the residual fine powder in the dust catcher 200 and prevent the fine powder from deforming and polluting the system.

[0052] Please refer to Figure 2 and Figure 4In some embodiments of the present invention, the dust collector 200 further includes two second discharge valves 240, which are disposed on the second discharge pipe 220. Since pipeline pressure is a crucial parameter for the cyclone separation system, it should remain relatively stable during operation. Therefore, the cyclone separation system should be kept in a sealed state to prevent significant pressure fluctuations. In this embodiment, the second discharge valves 240 are double butterfly valves, and the two valves cooperate to keep the entire cyclone separation system in a sealed state. When the cyclone separation system is not operating, both discharge valves 240 are closed. When the cyclone separation system is operating, the upper discharge valve 240 is opened first, while the lower discharge valve 240 remains closed. After being filtered by the filter device 210, the fine powder falls into the second discharge pipe 220. If it is necessary to collect and reuse the micro powder, first close the upper second discharge valve 240. After closing, open the lower second discharge valve 240 so that the micro powder is collected after passing through the second discharge pipe 220. By opening and closing the two second discharge valves 240, the micro powder can be collected smoothly, and the pipeline pressure can be kept relatively stable during the operation of the cyclone separation system.

[0053] Please refer to Figure 2 as well as Figure 4 In some embodiments of the present invention, a second pneumatic hammer 250 is provided on the dust collector 200. In this embodiment, there is one second pneumatic hammer 250, located on the side of the conical portion of the dust collector 200. The second pneumatic hammer 250 can adjust the hammering force by adjusting the air pressure, shaking off the fine powder adhering to the dust collector 200 and preventing material blockage and bridging.

[0054] The following is for reference. Figures 1 to 4 The cyclone separation system according to embodiments of the present invention is described in detail with reference to specific examples. It is to be understood that the following description is merely illustrative and not intended to limit the specific scope of the invention.

[0055] like Figures 1 to 4As shown, when the cyclone separation system is running, the upper first discharge valve 160 and the upper second discharge valve 240 are opened first, the fluidized bed jet mill 500 is used to crush the material, the crushed material is screened by the suction of the fan 400 and the classification wheel, the material enters the cyclone separator 100 through the feed pipe 130, the material and the fine powder are separated by the back flushing device 140, the material is collected by the hopper 120 and falls into the first discharge pipe 150, the fine powder enters the dust catcher 200 through the conveying pipe 300, the fine powder in the gas is filtered by the filtering device 210 of the dust catcher 200, after filtration, the gas enters the filter 600 through the pipe for re-filtering, and after filtration, the gas flows into the fan 400 through the pipe, the airflow is discharged from the fan 400. After the material falls into the first discharge pipe 150, the material can be sampled through the sampling port 151, if the material quality is qualified, the upper first discharge valve 160 is closed and the lower first discharge valve 160 is opened, the material enters the material storage bin through the first discharge pipe 150, the material is collected and stored, and the fine powder is filtered by the filtering device 210 and falls into the second discharge pipe 220, when the fine powder needs to be collected and reused, the upper second discharge valve 240 is closed and the lower second discharge valve 240 is opened, and the fine powder is collected after passing through the second discharge pipe 220. Since the conveying pipe 300 is an inner-concave exhaust pipe, through the combined action of the back flushing device 140, the conveying pipe 300 and the Venturi tube 230, the material and the fine powder can be effectively dispersed, the separation rate can be accelerated, and the separation efficiency can be improved. At the same time, through the knocking of the first pneumatic knocking hammer 170 and the second pneumatic knocking hammer 250, the fine powder can be prevented from adhering and the bridging phenomenon can be prevented.

[0056] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. A cyclonic separation system characterised in that, The utility model relates to a cyclone separator, dust catcher and dust removal system, and belongs to the field of dust removal. The cyclone separator comprises a cylinder and a dust hopper, the cylinder is provided with a feeding pipe, the dust hopper is provided with a back flushing device, and the bottom of the dust hopper is connected with a first discharging pipe; The dust catcher is connected with the cyclone separator through a conveying pipe, the dust catcher is provided with a filtering device, the dust catcher is connected with a fan through a pipe, and the bottom of the dust catcher is connected with a second discharging pipe; The conveying pipe is an inner-contracting exhaust pipe; The cyclone separator further comprises an adjusting valve for adjusting the air pressure of the back flushing device, and the adjusting valve is connected with the back flushing device; A filter is arranged between the dust catcher and the fan; The back flushing device forms an upward rotational flow at the dust hopper; The dust catcher further comprises a Venturi tube, which is located at the top of the dust catcher and arranged in the gap of the filtering device.

2. The cyclonic separation system of claim 1 wherein, The back flushing device has three, and the back flushing devices are uniformly arranged in the dust hopper.

3. The cyclonic separation system of claim 1 wherein, The cyclone separator further comprises first discharging valves, and the first discharging valves have two, which are arranged on the first discharging pipe.

4. The cyclonic separation system of claim 3 wherein, A sampling port is arranged on the first discharging pipe, and the sampling port is located between the two first discharging valves.

5. The cyclonic separation system of claim 1 wherein, The dust catcher further comprises second discharging valves, and the second discharging valves have two, which are arranged on the second discharging pipe.

6. The cyclonic separation system of any one of claims 1 to 5 wherein, A first pneumatic knocking hammer is arranged on the cylinder.

7. The cyclonic separation system of any one of claims 1 to 5 wherein, A second pneumatic knocking hammer is arranged on the dust catcher.

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