Silica powder recovery and dust removal device

Abstract

The invention relates to the technical field of silicon powder recovery and dust removal, and particularly discloses a silicon powder recovery and dust removal device which comprises a gas generator, a cyclone separator communicated with the gas generator, a silicon powder recovery and dust removal assembly arranged at the upper end of the cyclone separator and a collection barrel arranged at the lower end of the cyclone separator. The bottom is provided with a communicating port used for being connected with a cyclone separator and internally provided with a cooling assembly and a pressurizer used for cooling and boosting gas; a slidable filter bag and an adsorption plate for electrostatic adsorption are arranged in the shell; the taking-out window is used for disassembling the filter bag located in the shell; a flow pipe for cooling and boosting gas to flow is arranged in the shell, and the flow pipe is rotationally connected with a static electricity generation assembly; the device solves the problem that silicon powder in a filter bag is difficult to recover due to the fact that extremely small silicon powder still cannot be effectively separated and the filter bag has structural defects in a traditional silicon powder recovery and dust removal device.

Description

Technical Field

[0001] The present application relates to the technical field of silicon powder recovery and dust removal, and specifically discloses a silicon powder recovery and dust removal device. Background Art

[0002] Silica fume recovery and dust removal is a process involving multiple steps and technologies, designed to separate silica fume from gases containing silica dust while reducing environmental pollution;

[0003] Specifically, silicon powder is made from silicon blocks and is widely used in various high-tech industries. At present, the preparation method of silicon powder is to wash it first and then crush it. The crushing method usually adopts direct extrusion crushing or direct impact crushing. In the crushing process, the powder in the air is not collected, so there is a large amount of powder in the air. Once it encounters an open flame, it will explode. Therefore, it is necessary to collect and remove dust from the silicon powder in the air.

[0004] The common technology at present is: using cyclone separator: by using the centrifugal force generated by the rotation of dust-containing gas, the particles are separated from the airflow (mainly large particles), the gas goes up, and the particles go down due to gravity. Then, the part where the gas goes up is equipped with a bag filter: the bag filter captures solid particles in the dust-containing gas through the filter bag, which is suitable for the separation of fine particles. The filter bag is essentially for solid-gas separation;

[0005] The above is the conventional use of the existing technology. The technology is very mature and the silicon powder recovery and dust removal effect is very good. However, there are still some problems:

[0006] First, it is difficult to remove the filter bag in the gas upward channel. In practice, the gas upward channel is very long and large enough. However, it is difficult to collect the silicon powder in the filter bag. Therefore, it is difficult to collect the silicon powder in the filter bag.

[0007] Second: The high-temperature gas entering the upward channel has a serious impact on the life of the filter bag;

[0008] Third: Filter bags can separate fine particles of silicon powder, but there are still finer particles that can pass through the filter bags, because the essence of the filter bag is still the gap, that is, the problem of whether the size can pass through. That is, under higher dust removal requirements, the effect of the filter bag is still not ideal;

[0009] Therefore, in order to achieve better and higher quality silicon powder recovery and dust removal, the inventors have proposed a silicon powder recovery and dust removal device. Summary of the invention

[0010] The purpose of the present invention is to solve the problem that the traditional silicon powder recovery and dust removal device cannot effectively separate extremely small silicon powder and the filter bag has structural defects, which makes it difficult to recover the silicon powder in the filter bag.

[0011] In order to achieve the above object, the present invention provides the following basic scheme:

[0012] A silicon powder recovery and dust removal device comprises a gas generator, a cyclone separator connected to the gas generator, a silicon powder recovery and dust removal component arranged at the upper end of the cyclone separator, and a collecting cylinder arranged at the lower end of the cyclone separator, wherein the silicon powder recovery and dust removal component comprises:

[0013] Bottom: equipped with a connecting port for connecting to a cyclone separator and equipped with a cooling component and a pressurizer inside for cooling and pressurizing the gas;

[0014] Shell and support assembly: The shell and support assembly are fixedly connected, and the support assembly bears the weight of the silicon powder recovery and dust removal assembly;

[0015] A slidable filter bag and an adsorption plate for electrostatic adsorption are provided inside the housing;

[0016] Removal window: detachably connected to the bottom for removing the filter bag inside the housing;

[0017] Top: including an outlet provided on the end cap;

[0018] A flow pipe for the flow of gas with reduced temperature and increased pressure is provided inside the shell, and the flow pipe is rotatably connected to an electrostatic generating component, and the electrostatic generating component acts on the filter bag and the adsorption plate;

[0019] Also included is a lifting assembly for lifting the filter bag.

[0020] The principles and effects of this basic solution are:

[0021] 1. Compared with the prior art, the device has a simple structure and an ingenious design. The device still uses a cyclone separator and the core principle of a cyclone separator. Under the action of the cyclone separator, particles enter the collection tube, and small particles flow upward and enter the silicon powder recovery and dust removal component, where further collection and recovery are achieved, and the collection and recovery effect of the silicon powder recovery and dust removal component is improved.

[0022] 2. Compared with the prior art, the silicon powder recovery and dust removal component in this device still uses a filter screen to recover small particles of silicon powder. However, the difficult problem of removing the filter bag in this device can be well solved in this case.

[0023] 3. Compared with the prior art, this device enhances the effect of silicon powder recovery, solves the problem that the traditional silicon powder recovery and dust removal device cannot effectively separate extremely small silicon powder and the filter bag has structural defects, which leads to the difficulty in recovering silicon powder in the filter bag. The device adopts the effect of electrostatic adsorption, which not only acts on the filter bag, improving the effect of the filter bag, but also acts on the adsorption plate, so that the adsorption plate has a certain electrostatic adsorption. Electrostatic adsorption is used to adsorb extremely small dust particles that can pass through the filter bag, thereby improving the dust recovery and dust removal effect.

[0024] 4. Compared with the prior art, the high-temperature gas in this device enters the upward channel, which has a very serious impact on the life of the filter bag. This device is designed with a cooling component, which can not only cool the airflow, but also centralize the airflow. The movement generated by the centralized airflow acts on the friction plate, which serves as a condition for friction to generate static electricity, thereby making the filter bag have static electricity, thereby improving the dust recovery effect of the filter bag.

[0025] 5. Compared with the prior art, the device has the advantages of adopting silicon powder recovery and dust removal components independently arranged in each section during the removal of the filter bag, using a lifting component to complete the lifting of the filter bag, and then designing the filter bag in a splicing and disassembly form to complete the removal of the filter bag, thereby solving the problem of difficulty in removing the filter bag. Since the filter bag is designed in a splicing and disassembly form, there is a problem of dust leakage in the gap. Therefore, the electrostatic effect is applied to the filter bag, so that the filter bag has static electricity, thereby solving the problem of dust leakage in the gap of the filter bag and ensuring the use effect of the filter bag.

[0026] Furthermore, the support assembly is a ring structure, which is fixedly connected to the outside of the shell, and has ears on both sides of the ring structure. The ears are provided with fixing ropes, and the free ends of the fixing ropes are fixed to the ground. The outer periphery of the bottom is provided with an external thread, and the removal window is provided with an internal thread. The internal thread and the external thread connect the removal window and the bottom through a threaded connection.

[0027] Furthermore, hinges are provided around the taking-out window, and a rotating window is provided at the free end of the hinge.

[0028] Furthermore, the cooling assembly includes a cooling box arranged at the bottom, an inlet port arranged at the bottom of the cooling box and connected to the connecting port, a collecting chamber connected to the inlet port, a plurality of cooling pipes connected to the collecting chamber, and a cooling plate arranged inside the cooling pipe, the refrigeration end of the cooling plate is arranged inside the cold extraction pipe, the cooling box is provided with a controller and a booster pump, the controller controls the start-up of the cooling plate and the booster pump, and the free end of the cooling pipe is connected to the flow pipe.

[0029] Furthermore, the flow tube includes a first tube and a second tube, the first tube is a hollow tube, the second tube is a solid tube, the static electricity generating component is arranged on the first tube, and a limit block is arranged on the free end of the second tube.

[0030] Furthermore, the electrostatic generating component includes a plurality of through holes opened on the second tube, a rotating rod connected to the through holes, and a rotating blade arranged on the rotating rod located inside the first tube, the rotation of the rotating blade is generated based on the flow of airflow, a friction plate is provided on the inner wall of the shell, and a friction contact point is provided at the free end of the rotating rod, the friction contact point and the friction plate charge the rotating rod, and the charged rotating rod acts on the second tube.

[0031] Furthermore, the lifting assembly includes a motor arranged on the cooling box and a threaded rod coaxially connected to the motor output shaft, the filter bag is threadedly connected to the threaded rod, the filter bag is provided with a connecting hole for the second tube to pass through, the free end of the second tube is provided with a connecting rod, the free end of the connecting rod is connected to the adsorption plate, the adsorption plate is provided with a through hole, and the through hole is connected to the outlet.

[0032] Furthermore, the filter bag includes a frame symmetrically spliced ​​into a circle and a filter net arranged inside the frame. The frame is provided with a threaded groove at the threaded connection of the threaded rod, and the threaded groove is threadedly connected to the threaded rod after splicing. The frame has a semicircular hole at the connection hole position, and the semicircular holes are spliced ​​to form a connection hole.

[0033] Furthermore, a clamp is provided at the connection hole position, and the clamp includes a first semicircle and a second semicircle, the first semicircle and the second semicircle are respectively connected to their respective semicircular holes, and the first semicircle and the second semicircle are provided with connecting bolts, and the first semicircle and the second semicircle are connected by the connecting bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A schematic diagram showing the installation of a silicon powder recovery and dust removal device proposed in an embodiment of the present application is shown;

[0036] Figure 2 A schematic structural diagram of a silicon powder recovery and dust removal assembly in a silicon powder recovery and dust removal device proposed in an embodiment of the present application is shown;

[0037] Figure 3A schematic diagram of the installation of a silicon powder recovery and dust removal component in a silicon powder recovery and dust removal device proposed in an embodiment of the present application is shown;

[0038] Figure 4 A schematic structural diagram of a cooling assembly in a silicon powder recovery and dust removal device proposed in an embodiment of the present application is shown;

[0039] Figure 5 A schematic diagram showing the structure of a rotating rod in a silicon powder recovery and dust removal device proposed in an embodiment of the present application is shown;

[0040] Figure 6 A schematic diagram of the installation of a filter bag in a silicon powder recovery and dust removal device proposed in an embodiment of the present application is shown;

[0041] Figure 7 A schematic structural diagram of a middle limit rod of a silicon powder recovery and dust removal device proposed in an embodiment of the present application is shown;

[0042] Figure 8 A schematic diagram of the structure of a clamp in a silicon powder recovery and dust removal device proposed in an embodiment of the present application is shown;

[0043] Fig. 9 A schematic structural diagram of an adsorption plate in a silicon powder recovery and dust removal device proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0044] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0045] The reference numerals in the drawings of the specification include: connecting pipe 1, gas generator 2, collecting cylinder 3, cyclone separator 4, connecting port 5, silicon powder recovery and dust removal assembly 6, bottom 601, taking-out window 602, rotating window 603, cooling box 604, inlet 6041, collecting chamber 6042, cooling pipe 6043, connecting pipe 6044, controller 6045, first pipe 605, second pipe 6051, stopper 6052, rotating rod 60 6. rotating blade 6061, rotating rod 6062, friction contact point 6063, friction plate 6064, shell 607, collar structure 608, lifting ear 609, threaded rod 610, hinge 611, internal thread 612, outlet 7, traction rope 8, clamp 9, first semicircle 901, second semicircle 902, connecting bolt 903, threaded groove 10, filter screen 11, frame 12, adsorption plate 13, through hole 14, connecting rod 15.

[0046] Implementation example Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown:

[0047] A silicon powder recovery and dust removal device comprises a gas generator 2, a cyclone separator 4 connected to the gas generator 2, a silicon powder recovery and dust removal component 6 arranged at the upper end of the cyclone separator 4, and a collecting cylinder 3 arranged at the lower end of the cyclone separator 4. The gas generator 2 is used to generate gas propulsion, and is also provided with a connecting pipe 1 for connecting the waste gas for dust recovery. The silicon powder recovery and dust removal component 6 comprises:

[0048] Bottom 601: a connecting port 5 is provided for connecting to the cyclone separator 4 and a cooling component and a pressurizer are provided inside for cooling and pressurizing the gas;

[0049] Shell 607 and support assembly: Shell 607 and support assembly are fixedly connected, and support assembly bears the weight of silicon powder recovery and dust removal assembly 6;

[0050] About the support components:

[0051] The supporting assembly is a collar structure 608, which is fixedly connected to the outside of the shell 607. Ears 609 are provided on both sides of the collar structure 608. Fixing ropes are provided on the ears 609. The free ends of the fixing ropes are fixed to the ground. The outer periphery of the bottom 601 is provided with an external thread, and the removal window 602 is provided with an internal thread 612. The internal thread 612 and the external thread connect the removal window 602 and the bottom 601 through a threaded connection.

[0052] Specifically: a collar structure 608 is used to fix the housing 607, because the bottom 601 of the housing 607 is a take-out window 602. In this case, the take-out window 602 can be opened, because the filter bag in this case is to be taken out and replaced by using the take-out window 602, because, for the housing 607, additional strength support is required, because the collar structure 608 is set in this case, and the collar structure 608 is used to fix the housing 607 to ensure the connection stability of the housing 607;

[0053] About the take-out window 602:

[0054] Hinges 611 are arranged around the taking-out window 602, and a rotating window 603 is arranged at the free end of the hinge 611. The rotating window 603 can be opened. After the rotating window 603 is opened, manual operation can be performed to disassemble and install the filter bag.

[0055] The housing 607 is provided with a slidable filter bag and an adsorption plate 13 for electrostatic adsorption;

[0056] Removal window 602: detachably connected to the bottom 601 for removing the filter bag inside the housing 607;

[0057] Top: including an outlet 7 arranged on the end cover;

[0058] A flow pipe for the flow of gas with reduced temperature and increased pressure is provided inside the housing 607, and the flow pipe is rotatably connected to an electrostatic generating component, and the electrostatic generating component acts on the filter bag and the adsorption plate 13;

[0059] Also included is a lifting assembly for lifting the filter bag.

[0060] In this case:

[0061] Since gas filtration is often accompanied by high gas temperatures, in order to avoid the effects of high temperatures on filter bags:

[0062] The cooling components are designed in this case:

[0063] The cooling assembly includes a cooling box 604 arranged at the bottom 601, an inlet 6041 arranged at the bottom 601 of the cooling box 604 and connected to the connecting port 5, a collecting chamber 6042 connected to the inlet 6041, a plurality of cooling pipes 6043 connected to the collecting chamber 6042, and a cooling plate arranged inside the cooling pipe 6043, the refrigeration end of the cooling plate is arranged inside the cold extraction pipe, the cooling box 604 is provided with a controller 6045 and a booster pump, the controller 6045 controls the start-up of the cooling plate and the booster pump, the free end of the cooling pipe 6043 is connected to the flow pipe, the free end of the cooling pipe 6043 is provided with a connecting pipe 1, and the flow pipe is connected through the connecting pipe 1.

[0064] Specifically, the gas enters the inlet 6041 from the connecting port 5, is collected from the inlet 6041 to the collecting chamber 6042, and then goes to the cooling pipe 6043 from the collecting chamber 6042. In this process, the controller 6045 and the pressure pump are used, so that the controller 6045 controls the cooling plate and the pressure pump to start, so that the gas coming out is the cooled high-pressure gas, and the cooled high-pressure gas enters the flow pipe;

[0065] About flow tube:

[0066] The flow tube includes a first tube 605 and a second tube 6051 , wherein the first tube 605 is a hollow tube and the second tube 6051 is a solid tube. The electrostatic generating component is arranged on the first tube 605 , and a limit block 6052 is arranged at the free end of the second tube 6051 .

[0067] Specifically: a connecting block is provided between the first tube 605 and the second tube 6051, and the connecting block is hollow and used for cooling the high-pressure gas to flow out;

[0068] Then, the static electricity generating component includes a plurality of through holes opened on the second tube 6051, a rotating rod 606 connected to the through holes, and a rotating blade 6061 arranged on the rotating rod 606 located inside the first tube 605, the rotation of the rotating blade 6061 is generated based on the flow of airflow, the inner wall of the shell 607 is provided with a friction plate 6064, and the free end of the rotating rod 606 is provided with a friction contact point 6063, the friction contact point 6063 and the friction plate 6064 charge the rotating rod 606, and the charging of the rotating rod 606 acts on the second tube 6051.

[0069] Specifically: the cooling high-pressure gas acts on the rotating blade 6061, so that the rotating rod 606 rotates. Since the two ends of the rotating rod 606 are provided with friction contact points 6063, the friction contact points 6063 and the friction plate 6064 charge the rotating rod 606. The rotating rod 606 is charged so that the first tube 605 and the second tube 6051 are charged. Since the function of the rotating blade 6061 needs to be ensured, the material of the rotating blade 6061 is non-metal, that is, the rotating blade 6061 is not charged.

[0070] Lifting components:

[0071] The lifting assembly includes a motor arranged on a cooling box 604 and a threaded rod 610 coaxially connected to the motor output shaft. The filter bag is threadedly connected to the threaded rod 610. The filter bag is provided with a connecting hole for the second tube 6051 to pass through. The free end of the second tube 6051 is provided with a connecting rod 15. The free end of the connecting rod 15 is connected to the adsorption plate 13. The adsorption plate 13 is provided with a through hole 14. The through hole 14 is connected to the outlet 7.

[0072] Specifically: the motor is started to rotate the threaded rod 610. Since the filter bag is threadedly connected to the threaded rod 610 and the filter bag is provided with a connection hole for the second tube 6051 to pass through, the second tube 6051 passes through the connection hole. For the filter bag, the filter bag moves up and down on the threaded rod 610, and then the filter bag can move toward the removal window 602, and then the rotating window 603 can be opened, and manual operation can be performed.

[0073] In the process of replacing the filter bag, in order to ensure the smooth replacement of the filter bag:

[0074] The filter bag includes a frame 12 symmetrically spliced ​​into a circle and a filter net 11 arranged inside the frame 12. The frame 12 is provided with a thread groove 10 at the threaded connection of the threaded rod 610. The thread groove 10 is threadedly connected to the threaded rod 610 after splicing. The frame 12 has a semicircular hole at the connection hole position, and the semicircular holes are spliced ​​to form a connection hole.

[0075] Specifically: the core is that when the thread groove 10 is threadedly connected with the threaded rod 610 after splicing, it is necessary to ensure that the thread groove 10 and the threaded rod 610 are stably threadedly connected, and then the semicircular holes are spliced ​​to form a connecting hole. In this process, the clamp 9 is required;

[0076] About clamp 9:

[0077] Specifically: a clamp 9 is provided at the connection hole position, and the clamp 9 includes a first semicircle 901 and a second semicircle 902, the first semicircle 901 and the second semicircle 902 are respectively connected to their respective semicircular holes, and a connecting bolt 903 is provided on the first semicircle 901 and the second semicircle 902, and the first semicircle 901 and the second semicircle 902 are connected by the connecting bolt 903.

[0078] When the filter bag needs to be disassembled, it is only necessary to remove the connecting bolt 903, and then the frame 12 will be separated. After the replacement is completed, the connecting bolt 903 is reinstalled to complete the reassembly of the filter bag.

[0079] Specific implementation process:

[0080] In the first step, the cyclone separator 4 and the gas generator 2 are still used to separate the gas and the large silicon powder particles, and then the large silicon powder particles go down into the collection tube 3, and the particles of other sizes enter the silicon powder recovery and dust removal component 6;

[0081] In the second step, under the action of the gas generator 2, the gas will move upward and finally exit from the outlet 7. In this process, it will be blocked by the filter bag, which separates the small particles of silicon powder from the gas.

[0082] The third step. During this second step, the friction contact point 6063 and the friction plate 6064 charge the rotating rod 606, and the free end of the second tube 6051 is provided with a connecting rod 15, the free end of the connecting rod 15 is connected to the adsorption plate 13, and the adsorption plate 13 is provided with a through hole 14, and the through hole 14 is connected to the outlet 7.

[0083] Since there are very small particles of silicon powder passing through the filter bag, the present invention is provided with electrostatic adsorption dust removal, which uses metal conductivity to make the adsorption plate 13 charged, thereby solving the problem of very small particles of silicon powder passing through the filter bag;

[0084] The fourth step is that since the essence of the filter bag is the problem of gap passing, there is a problem of replacement and deterioration of filtering effect, so it needs to be replaced in time. However, the structural defects of the filter bag make it difficult to recover the silicon powder in the filter bag;

[0085] Therefore, in this case, a motor is provided so that the filter bag can move up and down, so that the filter bag can be close to the removal window 602, thereby completing the replacement of the filter bag. Since the filter bag in this case is slidably connected, there is a gap that causes the effect of the filter bag to deteriorate. Therefore, this case also uses the second tube 6051. Since the second tube 6051 is charged, the overall structure of the filter bag is improved, so that the filter bag can be charged under the action of the second tube 6051, so that the filter bag also has the effect of electrostatic adsorption, and then the filter bag also has the effect of electrostatic adsorption to avoid the problem of silicon powder leakage in the gap caused by the sliding setting of the filter bag.

[0086] The device solves the problem that the traditional silicon powder recovery and dust removal device cannot effectively separate extremely small silicon powder and the filter bag has structural defects, which makes it difficult to recover the silicon powder in the filter bag.

[0087] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A silicon powder recovery and dust removal device, comprising a gas generator, a cyclone separator connected to the gas generator, a silicon powder recovery and dust removal assembly arranged at the upper end of the cyclone separator, and a collecting cylinder arranged at the lower end of the cyclone separator, wherein: the silicon powder recovery and dust removal assembly comprises: Bottom: equipped with a connecting port for connecting to a cyclone separator and equipped with a cooling component and a pressurizer inside for cooling and pressurizing the gas; Shell and support assembly: The shell and support assembly are fixedly connected, and the support assembly bears the weight of the silicon powder recovery and dust removal assembly; A slidable filter bag and an adsorption plate for electrostatic adsorption are provided inside the housing; Removal window: detachably connected to the bottom for removing the filter bag inside the housing; Top: including an outlet provided on the end cap; A flow pipe for the flow of gas with reduced temperature and increased pressure is provided inside the shell, and an electrostatic generating component is rotatably connected to the flow pipe, and the electrostatic generating component acts on the filter bag and the adsorption plate; Also included is a lifting assembly for lifting the filter bag.

2. A silicon powder recovery and dust removal device according to claim 1, characterized in that: The support assembly is a ring structure, which is fixedly connected to the outside of the shell. Ears are provided on both sides of the ring structure, and fixing ropes are provided on the ears. The free ends of the fixing ropes are fixed to the ground. The outer periphery of the bottom is provided with an external thread, and the removal window is provided with an internal thread. The internal thread and the external thread connect the removal window and the bottom through a threaded connection.

3. A silicon powder recovery and dust removal device according to claim 2, characterized in that: Hinges are arranged around the taking-out window, and a rotating window is arranged at the free end of the hinge.

4. A silicon powder recovery and dust removal device according to claim 2, characterized in that: The cooling assembly includes a cooling box arranged at the bottom, an inlet port arranged at the bottom of the cooling box and connected to the connecting port, a collecting chamber connected to the inlet port, a plurality of cooling pipes connected to the collecting chamber, and a cooling plate arranged inside the cooling pipe. The refrigeration end of the cooling plate is arranged inside the cold extraction pipe. The cooling box is provided with a controller and a booster pump. The controller controls the start-up of the cooling plate and the booster pump. The free end of the cooling pipe is connected to the flow pipe.

5. The silicon powder recovery and dust removal device according to claim 5, characterized in that: The flow tube comprises a first tube and a second tube, the first tube is a hollow tube, the second tube is a solid tube, the static electricity generating component is arranged on the first tube, and a limit block is arranged at the free end of the second tube.

6. The silicon powder recovery and dust removal device according to claim 5, characterized in that: The electrostatic generating component includes a plurality of through holes opened on the second tube, a rotating rod connected to the through holes, and a rotating blade arranged on the rotating rod located inside the first tube, wherein the rotation of the rotating blade is generated based on the flow of airflow, a friction plate is arranged on the inner wall of the shell, and a friction contact point is arranged at the free end of the rotating rod, wherein the friction contact point and the friction plate charge the rotating rod, and the charged rotating rod acts on the second tube.

7. The silicon powder recovery and dust removal device according to claim 6, characterized in that: The lifting assembly includes a motor arranged on a cooling box and a threaded rod coaxially connected to an output shaft of the motor, the filter bag is threadedly connected to the threaded rod, the filter bag is provided with a connecting hole for a second tube to pass through, a connecting rod is provided at a free end of the second tube, the free end of the connecting rod is connected to an adsorption plate, a through hole is provided on the adsorption plate, and the through hole is connected to an outlet.

8. The silicon powder recovery and dust removal device according to claim 7, characterized in that: The filter bag includes a frame symmetrically spliced ​​into a circle and a filter screen arranged inside the frame. The frame is provided with a threaded groove at the threaded connection of the threaded rod, and the threaded groove is threadedly connected to the threaded rod after splicing. The frame has a semicircular hole at the connection hole position, and the semicircular holes are spliced ​​to form a connection hole.

9. The silicon powder recovery and dust removal device according to claim 8, characterized in that: A clamp is provided at the connection hole position, and the clamp includes a first semicircle and a second semicircle. The first semicircle and the second semicircle are respectively connected to their respective semicircular holes. The first semicircle and the second semicircle are provided with connecting bolts, and the first semicircle and the second semicircle are connected by the connecting bolts.

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