Continuous preparation device for oxygen-free antimony particles

Abstract

The invention relates to the technical field of oxygen-free antimony particle continuous preparation, in particular to an oxygen-free antimony particle continuous preparation device which comprises a filter body, a control unit, a scraping unit and a spraying unit. The antimony particles attached to the surface of the filter element in the filtering process and the inner wall of the shell on the filter body are scraped, the situation that a large number of antimony particles are attached to the surface of the filter element for a long time to affect the filtering efficiency of the filter element is avoided, the antimony particles are accelerated to be stacked together, fall off under the action of gravity and are collected, and the antimony particles are scraped while the surface of the filter element which stops filtering is scraped. According to the present invention, the antimony particles are ensured not to be attached to the surface of the filtration core by using the backwashing so as to achieve the sufficient filtration and collection of the antimony particles, reduce the amount of the compressed gas required by the backwashing, reduce the backwashing time, and prevent the poor filtration efficiency caused by the long use time of the filtration core of the other working microporous filter.

Description

Technical Field

[0001] The present invention relates to the technical field of continuous preparation of oxygen-free antimony particles, in particular to a device for continuous preparation of oxygen-free antimony particles. Background Art

[0002] Oxygen-free antimony particles (hereinafter referred to as antimony particles) are mainly used in semiconductor manufacturing, infrared optical materials, special alloy additives and other scenarios due to their ultra-low oxygen content and high purity. The production process of antimony particles mainly includes: raw material preparation, reduction reaction, particle generation and collection, quality inspection and packaging and storage. The collection of particles determines the output of antimony particles, so it is very important in the production process. The collection methods of particles mainly include: collection by gravity sedimentation, collection using a filtration device and collection under inert gas protection. Here we mainly use the microporous filter in the filtration device to filter the gas mixture containing antimony particles for collection.

[0003] Traditional filtration methods generally use two microporous filters in combination to achieve the purpose of continuous filtration. However, during the filtration process, only relying on the closure of the passage to clean the surface of the filter element on the microporous filter cannot solve the problem of antimony particles adhering to the surface of the filter element during the filtration process, affecting the filtration efficiency of the filter element. When the filter element is only cleaned by backwashing, the antimony particles attached to the shell on the filter body cannot be cleaned, and backwashing requires a large amount of compressed air. Therefore, the backwashing time is longer, which causes the filter element of the other working microporous filter to be used for a longer time and its filtration efficiency is worse. Summary of the Invention

[0004] In view of the above problems, the present invention provides a continuous oxygen-free antimony particle preparation device to solve the technical problem in the related art that antimony particles adhere to the surface of the filter element during the filtration process, affecting the filtration efficiency of the filter element. To achieve the above purpose, the present invention provides the following technical solutions.

[0005] An oxygen-free antimony particle continuous production device according to an embodiment of the present application includes a filter body of a microporous filter, wherein the number of the filter bodies is two, and a control unit for controlling the connection between the two filter bodies is provided on both filter bodies;

[0006] The filter body is provided with a scraping unit for scraping off the antimony particles attached to the filter element on the filter body and the inner wall of the shell on the filter body; the scraping unit includes an inner wall scraping plate for rotatingly scraping the inner wall of the shell and a filter element scraping plate for rotatingly scraping the filter element; a spraying unit for spraying off the antimony particles on the scraping unit is provided on the base of the filter body, and the spraying unit is used to separate the antimony particles by spraying air onto the surface of the inner wall scraping plate and the filter element scraping plate after the scraping unit has scraped.

[0007] When the filter body on the right side needs to be backwashed after the internal attached antimony particles are removed, the control unit is used to control the on and off so that the gas mixture containing antimony particles enters the filter body on the left side for filtration. When the filter body on the left side needs to be backwashed, the control unit is used to control the on and off so that the gas mixture containing antimony particles enters the filter body on the right side for filtration, thereby completing the uninterrupted collection and filtration of oxygen-free antimony particles.

[0008] According to an embodiment of the present invention, a connecting pipe is fixedly connected between the air outlet pipe on the right side of the filter body and the air inlet pipe of the filter body on the left side to ensure continuous filtration. The air inlet pipe and the air outlet pipe on the right side of the filter body are fixedly connected by a connecting pipe. A bending pipe is fixedly connected between the front end of the connecting pipe and the air outlet pipe on the left side of the filter body. A collecting ring groove is provided at the upper end of the base on the filter body, and a discharge pipe is fixedly installed on the base of the filter body and below the collecting ring groove.

[0009] According to an embodiment of the present invention, the control unit includes valve one, valve one is fixedly installed on the inner walls of the vertical section of the air inlet pipe and the vertical section of the air outlet pipe on the right side of the filter body and located on the upper side of the ventilation pipe, valve two is fixedly installed in the middle of the connecting pipe, valve three is fixedly installed on the inner wall of the connecting pipe and located on the left side of the bent pipe interface, and valve four is fixedly installed on the inner wall of the right side interface of the bent pipe.

[0010] According to an embodiment of the present invention, a ventilation pipe for backwashing is fixedly installed at the front end of the air outlet pipe on the filter body, an L-shaped exhaust pipe for discharging the backwashed gas is fixedly installed on the left side of the base on the filter body, valves five and six are fixedly installed in the L-shaped exhaust pipe and the ventilation pipe respectively, and valve seven is fixedly installed on the inner wall of the discharge pipe.

[0011] According to an embodiment of the present invention, the scraping unit includes a rotating shaft, the upper end of the outer shell on the filter body is rotatably connected to the rotating shaft, the lower end of the rotating shaft is fixedly installed with a rotating bracket, the lower end of the rotating bracket is symmetrically fixed with inner wall scraping plates for scraping the inner wall of the outer shell, the lower end of the rotating bracket is symmetrically fixed with filter element scraping plates located between the inner wall scraping plates; rubber sleeves are fixedly installed on the side wall surfaces of the inner wall scraping plates and the filter element scraping plates.

[0012] According to an embodiment of the present invention, a plurality of guide ring plates are fixedly connected to the inner wall scraping plates on the left and right sides. The plurality of guide ring plates are evenly arranged in the up and down directions, and the guide ring plates are in contact with the inner wall of the outer shell on the filter body.

[0013] According to an embodiment of the present invention, the spray unit includes a fixed block, a fixed block is fixedly installed on the upper end of the rear side of the base on the filter body, a spiral bend is fixedly installed on the upper end of the fixed block, rotating cleaning balls are evenly fixedly installed on the spiral bend, and a delivery pipe that passes through the base on the filter body is fixedly installed on the fixed block.

[0014] According to an embodiment of the present invention, annular guide grooves are linearly and evenly opened on the inner wall of the shell on the filter body, and the guide ring plate contacts the corresponding inner wall of the annular guide groove. When the scraper plate rotates, the guide ring plate rotates synchronously along the annular guide groove.

[0015] According to an embodiment of the present invention, a filter plate is fixedly mounted on the inner wall of the L-shaped exhaust pipe and close to the interface of the filter body.

[0016] It can be seen from the above technical solutions that the present invention has the following advantages:

[0017] 1. In the present invention, the scraping unit cooperates with the spray unit and the filter body to scrape off the antimony particles attached to the surface of the filter element in filtration and the inner wall of the shell on the filter body, thereby preventing a large amount of antimony particles from adhering to the surface of the filter element for a long time and affecting the filtration efficiency of the filter element, and accelerating the accumulation of antimony particles, which fall and are collected under the action of gravity. While scraping the surface of the filter element that has stopped filtering, backwashing is used to ensure that no antimony particles are attached to the surface of the filter element, so as to achieve sufficient filtration and collection of the antimony particles, and at the same time reduce the amount of compressed gas required for backwashing, and reduce the time of backwashing, thereby preventing the filter element of another working microporous filter from having a worse filtration efficiency due to long use time.

[0018] 2. In the present invention, by closing the connection between the filter body on the left and the filter body on the right, the filtered gas mixture is prevented from coming into contact with the antimony particles or the gas mixture containing antimony particles remaining on the inner wall of the connecting pipe when passing through the connecting pipe on the left, resulting in the presence of antimony particles in the filtered gas mixture, thereby affecting the filtration collection rate of the equipment.

[0019] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by a continuous preparation device for oxygen-free antimony particles provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the main stereoscopic structure of the present invention is shown.

[0022] Figure 2 The figure shows a schematic diagram of the main three-dimensional structure of the filter body shell of the present invention removed from the right side.

[0023] Figure 3 The figure shows a rear perspective structural diagram of the filter body with the right side of the housing removed.

[0024] Figure 4 It shows a schematic diagram of the main cross-sectional plan structure of the present invention.

[0025] Figure 5 A schematic diagram of the top cross-sectional plan structure of valve two, valve three and valve four is shown.

[0026] The above drawings include the following reference numerals:

[0027] 1. Filter body; 11. Connecting pipe; 12. Connecting pipe; 13. Bend pipe; 14. Collecting ring groove; 15. Discharge pipe; 16. Vent pipe; 17. L-shaped exhaust pipe; 2. Control unit; 21. Valve 1; 22. Valve 2; 23. Valve 3; 24. Valve 4; 3. Scraper unit; 31. Rotating shaft; 32. Rotating bracket; 321. Filter element scraper; 33. Inner wall scraper; 34. Guide ring plate; 4. Spray-off unit; 41. Fixed block; 42. Spiral elbow; 43. Rotating cleaning ball; 44. Delivery pipe. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] See Figure 1 、 Figure 2 and Figure 5, a device for continuously preparing oxygen-free antimony particles, comprising a filter body 1 of a microporous filter, the number of the filter bodies 1 being two, a control unit 2 for controlling the passage connection between the two filter bodies 1 being commonly provided on the two filter bodies 1, a scraping unit 3 for scraping off the antimony particles attached to the filter element on the filter body 1 and the inner wall of the shell of the filter body 1 being provided on the filter body 1, a spraying unit 4 for spraying off the antimony particles on the scraping unit 3 being provided on the base of the filter body 1, the spraying unit 4 being used to separate the antimony particles by spraying air onto the surface of the inner wall scraping plate 33 and the filter element scraping plate 321 after the scraping unit 3 has scraped; the air outlet pipe on the right side of the filter body 1 and the antimony particles attached to the inner wall scraping plate 33 and the filter element scraping plate 321 are connected; The air inlet pipe of the left filter body 1 is fixedly connected with a connecting pipe 11 to ensure continuous filtration. The air inlet pipe and the air outlet pipe on the right filter body 1 are fixedly connected by a connecting pipe 12. A bending pipe 13 is fixedly connected between the front end of the connecting pipe 11 and the air outlet pipe on the left filter body 1. A collecting ring groove 14 is provided at the upper end of the base on the filter body 1, and a discharge pipe 15 is fixedly installed on the base of the filter body 1 and below the collecting ring groove 14; a control unit 2 for controlling the passage connection between the two filter bodies 1 is commonly provided between the filter body 1 and the connecting pipe 11, the connecting pipe 12 and the bending pipe 13, and the filter element on the filter body 1 is threadedly connected to the base.

[0030] See Figure 4 and Figure 5 The control unit 2 includes a valve 1 21. The valve 1 21 is fixedly installed on the inner wall of the vertical section of the air inlet pipe and the vertical section of the air outlet pipe on the right side of the filter body 1 and located on the upper side of the ventilation pipe 16. The valve 2 22 is fixedly installed in the middle of the connecting pipe 12. The valve 3 23 is fixedly installed on the inner wall of the connecting pipe 11 and located on the left side of the interface of the bent pipe 13. The valve 4 24 is fixedly installed on the inner wall of the right interface of the bent pipe 13.

[0031] See Figure 2 A vent pipe 16 for backwashing is fixedly installed at the front end of the outlet pipe on the filter body 1. An L-shaped exhaust pipe 17 for discharging backwashed gas is fixedly installed on the left side of the base on the filter body 1. Valves five and six are fixedly installed in the L-shaped exhaust pipe 17 and the vent pipe 16 respectively. Valve seven is fixedly installed on the inner wall of the discharge pipe 15. A filter plate is fixedly installed on the inner wall of the L-shaped exhaust pipe 17 and near the interface of the filter body 1.

[0032] See Figure 2The scraping unit 3 includes a rotating shaft 31. The upper end of the shell on the filter body 1 is rotatably connected to the rotating shaft 31. The lower end of the rotating shaft 31 is fixedly installed with a rotating bracket 32. The lower end of the rotating bracket 32 is symmetrically fixed with inner wall scraping plates 33 for scraping the inner wall of the shell. A plurality of guide ring plates 34 are fixedly connected to the inner wall scraping plates 33 on the left and right sides. The plurality of guide ring plates 34 are evenly arranged in the up and down directions. Annular guide grooves are linearly and evenly opened along the upper edge of the inner wall of the shell on the filter body 1, and the guide ring plates 34 cooperate with the corresponding annular guide grooves.

[0033] See Figure 1 The filter element scraping plate 321 is fixedly installed symmetrically on the left and right sides of the lower end of the rotating bracket 32 and located between the inner wall scraping plates 33. Rubber sleeves are fixedly installed on the side wall surfaces of the inner wall scraping plates 33 and the filter element scraping plates 321.

[0034] First, the gas mixture containing antimony particles is filtered through the filter body 1 on the right side. The filtered antimony particles adhere to the surface of the filter element on the filter body 1. The filtered gas is discharged through the connecting pipe 12 on the left filter body 1. At the same time, the rotating shaft 31 and the rotating bracket 32 are driven to rotate by an external motor, driving the inner wall scraper plate 33 and the filter element scraper plate 321 to rotate, respectively scraping off the antimony particles attached to the inner wall of the outer shell on the filter body 1, and scraping off the antimony particles on the surface of the filter element on the right side of the filter body 1, so that a large amount of antimony particles adhere to the inner wall scraper plate 33 and the filter element scraper plate 321 and accumulate, thereby preventing a large amount of antimony particles from adhering to the filter element surface for a long time and affecting the filtration efficiency of the filter element. In the scraping process, the gas mixture containing antimony particles is stirred, and the resistance of the gas mixture causes the antimony particles that have gathered together on the surface of the inner wall scraper plate 33 and the filter element scraper plate 321 to fall into the collection ring groove 14 under the action of gravity, and no longer contact the filter element surface of the filter body 1.

[0035] See Figure 3 The spray unit 4 includes a fixed block 41, and the fixed block 41 is fixedly installed on the upper end of the rear side of the base on the filter body 1. A spiral elbow 42 is fixedly installed on the upper end of the fixed block 41, and a rotating cleaning ball 43 is evenly fixed on the spiral elbow 42. A delivery pipe 44 that passes through the base on the filter body 1 is fixedly installed on the fixed block 41.

[0036] After a period of time, the inside of the filter body 1 on the right side needs to be backwashed. At this time, by closing valve 12, the unfiltered gas mixture is no longer allowed to enter the filter body 1 on the right side. With the cooperation of the connecting pipe 12 on the right side, the gas mixture containing antimony particles enters the filter body 1 on the left side for filtration to prevent the collection and filtration of oxygen-free antimony particles from being interrupted. The inner wall scraping plate 33 on the left side and the filter element scraping plate 321 repeat the scraping action. At the same time, the inner wall scraping plate 33 on the right side and the filter element scraping plate 321 continue to scrape the shell of the filter body 1 on the right side. The antimony particles attached to the inner wall and the surface of the filter element are scraped off, and air is ventilated to the spiral bend 42 through the delivery pipe 44. Driven by the air pressure, the rotating cleaning ball 43 rotates and sprays gas, spraying the surface of the inner wall scraping plate 33 and the filter element scraping plate 321, so that the antimony particles gathered together are separated from the inner wall scraping plate 33 or the filter element scraping plate 321 under the action of gravity and fall downward, and compressed air is introduced into the air outlet pipe on the right side for backwashing, so that the antimony particles attached to the surface of the filter element are completely separated from the filter element. After a period of time, the backwashed gas is discharged after filtering.

[0037] See Figure 4 and Figure 5 Initially, when the filter body 1 on the right side filters the gas mixture containing antimony particles, valve one 21 on the filter body 1 on the right side is opened, valve two 22 is closed, valve one 21 on the filter pump body on the left side is opened, valve three 23 is closed, and valve four 24 is opened.

[0038] Continue reading Figure 4 and Figure 5 When the filter body 1 on the right stops filtering and the filter body 1 on the left filters the gas mixture containing antimony particles, valve one 21 on the left filter pump body and valve two 22 on the right filter pump body are closed, valve three 23 are opened, and valve four 24 are closed.

[0039] Continue reading Figure 4 and Figure 5 When the filter body 1 on the left stops filtering and the filter body 1 on the right filters the gas mixture containing antimony particles, valve one 21 on the filter body 1 on the right is opened, valve two 22 is closed, valve three 23 is closed, and valve four 24 is opened.

[0040] See Figure 1 and Figure 2 After the scraping unit 3 and the spraying unit 4 clean the inside of the filter body 1, open the valve six on the filter body 1, introduce compressed air into the filter body 1 for backwashing, and open the valve five to filter and discharge the backwashed gas.

[0041] Close valve two 22, open valve four 24, and continue to filter the gas mixture containing antimony particles through the right filter body 1 to prevent the filtered gas mixture from coming into contact with the antimony particles or the gas mixture containing antimony particles remaining on the inner wall of the connecting pipe 12 when passing through the left connecting pipe, resulting in the presence of antimony particles in the filtered gas mixture, reducing the collection rate of the device. The filtered gas mixture is passed into the outlet pipe of the left filter body 1 through the bent pipe 13, and the residual gas mixture in the left filter body 1 continues to pass through the left filter body 1 for filtration and is discharged from the outlet pipe together. When the residual gas mixture in the left filter body 1 is completely discharged, close the air inlet pipe and the air outlet pipe of the left filter body 1, clean and backwash the inside of the left filter body 1, and discharge the backwashed gas after filtration through the L-shaped exhaust pipe 17. The antimony particles accumulated in the collection ring groove 14 are discharged through the discharge pipe 15.

[0042] Working principle of the present invention: Step 1: First, the gas mixture containing antimony particles is filtered through the filter body 1 on the right, and the filtered antimony particles adhere to the surface of the filter element on the filter body 1. The filtered gas is discharged through the connecting pipe 12 on the left filter body 1. At the same time, the antimony particles on the shell and the surface of the filter element on the right filter body 1 are scraped by the scraping unit 3, so that a large number of antimony particles adhere to the surface of the parts on the scraping unit 3 and accumulate, avoiding a large number of antimony particles from adhering to the surface of the filter element for a long time and affecting the filtering efficiency of the filter element. In the scraping process, the gas mixture containing antimony particles is stirred, and the resistance of the gas mixture causes the antimony particles gathered together on the surface of the parts on the scraping unit 3 to fall to the collection ring groove 14 under the action of gravity, and no longer contact the filter element surface of the filter body 1.

[0043] Step 2: After a period of time, the inside of the filter body 1 on the right needs to be backwashed. At this time, the vertical sections of the air inlet and outlet pipes of the filter body 1 on the right are closed through the control unit 2. With the cooperation of the connecting pipe 12 on the right, the gas mixture containing antimony particles enters the filter body 1 on the left for filtration to prevent the interruption of the collection and filtration of oxygen-free antimony particles. The scraping unit 3 on the left repeats the scraping action. At the same time, the scraping unit 3 on the right continues to scrape the antimony particles on the surface of the shell and filter element on the right filter body 1. The surface of the parts on the scraping unit 3 is sprayed through the spray unit 4, and compressed air is introduced into the outlet pipe on the right for backwashing, so that the antimony particles attached to the surface of the filter element are completely separated from the filter element.

[0044] Step 3: After a period of time, the backwashed gas is filtered and discharged, and then the connection between the left filter body 1 and the right filter body 1 is closed, and the gas mixture containing antimony particles is continued to be filtered through the right filter body 1 to prevent the filtered gas mixture from coming into contact with the antimony particles or the gas mixture containing antimony particles remaining on the inner wall of the connecting pipe 12 when passing through the left connecting pipe, resulting in the filtered gas mixture containing antimony particles. The filtered gas mixture is passed into the outlet pipe of the left filter body 1 through the bent pipe 13, and the residual gas mixture in the left filter body 1 continues to pass through the left filter body 1 for filtration and is discharged from the outlet pipe together. When the residual gas mixture in the left filter body 1 is completely discharged, the air inlet pipe and the air outlet pipe of the left filter body 1 are closed, the inside of the left filter body 1 is cleaned and backwashed, and the backwashed gas is discharged after filtering, so that the antimony particles accumulated in the collection ring groove 14 are discharged through the discharge pipe 15.

[0045] In the description of the present invention, it should be understood that the terms "center", "middle", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "end", "axial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0046] Furthermore, the terms "first," "second," "number one," "number two," "one," and "two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being described. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0047] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; they may refer to mechanical or electrical connections; they may refer to direct or indirect connections via an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A continuous preparation device for oxygen-free antimony particles, characterized in that , including a filter body of a microporous filter, the number of the filter bodies is two, and a control unit for controlling the passage connection between the two filter bodies is commonly provided on the two filter bodies; The filter body is provided with a scraping unit for scraping off antimony particles attached to the filter element on the filter body and the inner wall of the shell on the filter body; The scraping unit includes an inner wall scraping plate for rotating and scraping the inner wall of the housing and a filter element scraping plate for rotating and scraping the filter element; The base of the filter body is provided with a spraying unit for spraying the antimony particles on the scraping unit. The spraying unit is used to remove the antimony particles by spraying air toward the scraping plate on the inner wall and the scraping plate on the filter element after the scraping unit has scraped. When the filter body on the right side needs to be backwashed after the internal attached antimony particles are removed, the control unit is used to control the on and off so that the gas mixture containing antimony particles enters the filter body on the left side for filtration. When the filter body on the left side needs to be backwashed, the control unit is used to control the on and off so that the gas mixture containing antimony particles enters the filter body on the right side for filtration, thereby completing the uninterrupted collection and filtration of oxygen-free antimony particles.

2. The device for continuous preparation of oxygen-free antimony particles according to claim 1, characterized in that: The air outlet pipe on the right side of the filter body and the air inlet pipe of the left side of the filter body are fixedly connected with a connecting pipe to ensure continuous filtration. The air inlet pipe and the air outlet pipe on the right side of the filter body are fixedly connected through a connecting pipe. A bending pipe is fixedly connected between the front end of the connecting pipe and the air outlet pipe on the left side of the filter body. A collecting ring groove is provided at the upper end of the base on the filter body, and a discharge pipe is fixedly installed on the base of the filter body and below the collecting ring groove.

3. The device for continuous preparation of oxygen-free antimony particles according to claim 1, characterized in that: The control unit includes valve one, valve one is fixedly installed on the inner wall of the vertical section of the air inlet pipe and the vertical section of the air outlet pipe on the right side of the filter body and located on the upper side of the ventilation pipe, valve two is fixedly installed in the middle of the connecting pipe, valve three is fixedly installed on the inner wall of the connecting pipe and located on the left side of the bent pipe interface, and valve four is fixedly installed on the inner wall of the right side interface of the bent pipe.

4. The device for continuous preparation of oxygen-free antimony particles according to claim 2, characterized in that: A vent pipe for backwashing is fixedly installed at the front end of the air outlet pipe on the filter body, and an L-shaped exhaust pipe for discharging backwashed gas is fixedly installed on the left side of the base on the filter body. Valves five and six are fixedly installed in the L-shaped exhaust pipe and the vent pipe respectively, and valve seven is fixedly installed on the inner wall of the discharge pipe.

5. The device for continuous preparation of oxygen-free antimony particles according to claim 1, characterized in that: The scraping unit includes a rotating shaft, the upper end of the shell on the filter body is rotatably connected to the rotating shaft, the lower end of the rotating shaft is fixedly installed with a rotating bracket, the lower end of the rotating bracket is symmetrically fixed with inner wall scraping plates for scraping the inner wall of the shell, and the lower end of the rotating bracket is symmetrically fixed with filter element scraping plates located between the inner wall scraping plates.

6. The device for continuous preparation of oxygen-free antimony particles according to claim 1, characterized in that: A plurality of guide ring plates are fixedly connected to the inner wall scraping plates on the left and right sides. The plurality of guide ring plates are evenly arranged in the up and down directions, and the guide ring plates are in contact with the inner wall of the outer shell on the filter body.

7. The device for continuous preparation of oxygen-free antimony particles according to claim 1, characterized in that: The spray unit includes a fixed block, a fixed block is fixedly installed on the upper end of the rear side of the base on the filter body, a spiral elbow is fixedly installed on the upper end of the fixed block, rotating cleaning balls are evenly fixedly installed on the spiral elbow, and a delivery pipe that passes through the base on the filter body is fixedly installed on the fixed block.

8. The device for continuous preparation of oxygen-free antimony particles according to claim 6, characterized in that: An annular guide groove is linearly and evenly opened on the inner wall of the shell on the filter body. The guide ring plate contacts the inner wall of the corresponding annular guide groove. When the scraper plate rotates, the guide ring plate rotates synchronously along the annular guide groove.

9. The device for continuous preparation of oxygen-free antimony particles according to claim 4, characterized in that: A filter plate is fixedly installed on the inner wall of the L-shaped exhaust pipe and close to the interface of the filter body.

10. The device for continuous preparation of oxygen-free antimony particles according to claim 1, characterized in that: The inner wall scraping plate and the side wall surface of the filter element scraping plate are both fixedly installed with rubber sleeves.

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