A quartz sand cleaning equipment for producing silicon powder

Abstract

The application relates to the technical field of quartz sand cleaning equipment, and discloses quartz sand cleaning equipment for silicon powder production, which comprises a machine body, a working cavity is arranged in the machine body, a roller is arranged in the working cavity of the machine body, and a driving motor is arranged outside the machine body. Through the cooperation of gear transmission, the driving of a feeding wheel can be realized when the roller works, so that uniform feeding of the quartz sand cleaning equipment for silicon powder production can be realized, the sputtering problem caused by the direct falling of quartz sand can be reduced, a feeding device is installed through a connecting base, and when the quartz sand feeding is too fast due to the excessive quartz sand in the feeding device, the outlet at the bottom of the feeding device can be reduced through the cooperation of a discharging baffle, so that the problem that the quartz sand is not cleaned thoroughly due to the too-fast feeding can be avoided, the cleaning efficiency of the quartz sand cleaning equipment is ensured, and the automatic balancing function of the feeding amount of the equipment is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of quartz sand cleaning equipment, in particular to a quartz sand cleaning equipment for silicon powder production. BACKGROUND

[0002] Silicon powder is a silicate mineral powder made of natural quartz as raw material through processes such as sorting, crushing, washing, and acid leaching purification. The main component is silicon dioxide, and the raw material is mainly quartz sand. At present, the cleaning of quartz sand in silicon powder production is generally realized by a wheel-type sand washer.

[0003] The existing wheel-type sand washer mainly realizes the cleaning of quartz sand by tumbling in water through an impeller. In the actual production process of silicon powder, the quartz sand raw material enters the inside of the sand washer from one side, the impeller slowly rotates under the drive, and the quartz sand is cleaned by mutual friction, and the quartz sand is discharged from the other side of the sand washer along with the rotation of the impeller, and enters the next production stage of silicon powder.

[0004] However, in actual production, the feeding speed of quartz sand is uncontrollable and mainly depends on the working efficiency of the previous production process. When the amount of quartz sand entering the wheel-type sand washer is large, it is easy to cause poor cleaning effect, and it is necessary to increase the cleaning steps to ensure that the quartz sand can meet the production requirements of silicon powder. The existing quartz sand cleaning equipment cannot timely discharge the sewage deposited at the bottom, and as the working time of the equipment increases, the cleaning effect is likely to deteriorate, affecting the quality of the produced silicon powder and reducing the production efficiency. Using a water pump or other equipment to pump out the sewage will increase energy consumption, and the continuous discharge of water in the equipment will also reduce the utilization efficiency of the cleaning water source, causing waste of water resources. SUMMARY

[0005] In view of the deficiencies of the existing quartz sand cleaning equipment in use, the present application provides a quartz sand cleaning equipment for silicon powder production, which has the advantages of preventing the feeding speed from being too fast and regularly discharging sewage at the bottom of the machine to ensure the cleaning efficiency of the water source in each part of the equipment, solving the technical problems of poor cleaning effect caused by too fast feeding of the quartz sand cleaning equipment in the above background technology, and the sewage settled at the bottom of the equipment cannot be discharged in time, affecting the cleaning effect.

[0006] The application provides the following technical scheme: a quartz sand cleaning device for silicon powder production, which comprises a machine body, a working cavity is arranged in the machine body, a roller is installed in the working cavity of the machine body, a driving motor is installed on the outside of the machine body, the output shaft of the driving motor is connected with the central rotating shaft of the roller through a speed reducer, a discharge plate is arranged on the outside of the machine body, a feeder is installed on the feeding side of the machine body, a discharging baffle is arranged below the feeder, a sewage cavity is arranged below the cleaning cavity in the machine body, a side door plate is arranged on the outside of the sewage cavity, a sealing plate is installed in the sewage cavity, a movable plate is connected to the bottom of the machine body, and a water spraying part is installed on the feeding side of the machine body.

[0007] Preferably, the central shaft of the roller is concentric with the central shaft of the cleaning space in the machine body, blades are connected to the inside of the roller, the blades are evenly distributed in a ring shape, side plates are connected to the outer edge of the roller, the side plates are evenly distributed at the outer ends of the blades, and the central shaft of the roller is connected with a driving gear.

[0008] Preferably, the sewage cavity is arranged in the machine body, an overflow port is arranged at the top of the right end of the sewage cavity, a drainage plate is arranged at the position of the bottom of the working cavity in the machine body, the inner diameters of the filter holes of the overflow port and the drainage plate are smaller than the outer diameter of the quartz sand, so that the problem of discharging the quartz sand from the overflow port and the drainage plate is avoided, the bristles on the outside of the side plates can also wash the filter holes, the problem of clogging of the filter holes is avoided, the smoothness of the device during operation is ensured, and the bottom surface of the sewage cavity is a slope that allows water to flow to the side door plate.

[0009] Preferably, the bottom of the sealing plate is connected to the bottom of the sewage cavity, the sealing plate is movably connected to the sewage cavity through a rod body capable of elastic expansion and contraction, the top of the sealing plate is clamped to the bottom of the drainage plate in a natural state, a sealing rubber layer is connected to the position where the sealing plate contacts the drainage plate, and the top end of the sealing plate has magnetism.

[0010] Preferably, the inside of the side plate has magnetism, the magnetic polarities of the side plate and the sealing plate at the opposite positions are the same, the magnetic repulsion between the side plate and the sealing plate when the side plate passes through the sealing plate makes the sealing plate move away from the drainage plate, and the outside of the side plate is connected with bristles that contact the inner wall of the machine body.

[0011] Preferably, the outside of the movable plate is movably connected with the inner walls of the machine body and the sewage cavity through a soft material, the bottom of the movable plate is connected with the top end of the sealing plate, the movable plate forms a corresponding semicircle with the working cavity in the machine body in a natural state of the sealing plate, and the movable plate also moves downward when the sealing plate moves.

[0012] Preferably, the bottom of the feeder is connected with the machine body through a connecting base, the connecting base is a telescopic structure composed of a telescopic spring and a free telescopic rod body, the rod body is an arc structure, the center of the arc is concentric with the roller, when the quartz sand in the feeder is too much, the connecting base is shortened and the feeder is lowered; the inside of the feeder is installed with a feeding wheel through a rotating shaft, and the outer end of the rotating shaft of the feeding wheel is connected with a driven gear located outside the feeder, the driven gear is connected with a driving gear through a gear transmission belt to realize linkage, and the roller rotates to drive the feeding wheel to rotate.

[0013] Preferably, the discharging baffle is installed on the machine body through a torsion spring shaft, and the discharging baffle is located at the bottom outlet of the feeder; in a natural state, the discharging baffle does not block the bottom outlet of the feeder, and when the feeder is lowered, the left end of the discharging baffle is pressed to make the right end of the discharging baffle deflect and close part of the bottom outlet of the feeder.

[0014] The present application has the following beneficial effects:

[0015] 1、Through the cooperation of gear transmission, the present application can drive the feeding wheel when the roller works, so that the uniform feeding of the quartz sand cleaning equipment for producing silicon powder can be realized, the problem of sputtering caused by the direct falling of quartz sand can be reduced, the feeder can be installed through the connecting base, and when the quartz sand in the feeder is too much, the bottom outlet of the feeder can be reduced through the cooperation of the discharging baffle, so that the problem of incomplete cleaning of quartz sand caused by too fast feeding can be avoided, the cleaning efficiency of the quartz sand cleaning equipment is ensured, and the automatic balancing function of the feeding amount of the equipment is realized.

[0016] 2、Through the cooperation of the overflow port, the present application can avoid the overflow problem caused by the water surface being too high in the machine body, facilitate the maintenance of the production environment, realize the discharge of the sewage deposited at the bottom of the machine body through the action of the drainage plate, realize the periodic discharge of the sewage deposited at the bottom of the machine body through the cooperation of the repelling of the same polarity magnetic force between the sealing plate and the side plate, reduce the problem of water source waste, improve the utilization rate of water resources, and ensure the cleaning effect of the water source in the machine body on the quartz sand.

[0017] 3、Through the cooperation of the overflow port, the present application can avoid the overflow problem caused by the water surface being too high in the machine body, facilitate the maintenance of the production environment, realize the discharge of the sewage deposited at the bottom of the machine body through the action of the drainage plate, realize the periodic discharge of the sewage deposited at the bottom of the machine body through the cooperation of the repelling of the same polarity magnetic force between the sealing plate and the side plate, reduce the problem of water source waste, improve the utilization rate of water resources, and ensure the cleaning effect of the water source in the machine body on the quartz sand. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the present application;

[0019] Figure 2 Structure diagram of the outer part of the application;

[0020] Figure 3 Structure diagram of the outer part of the application;

[0021] Figure 4 Structure diagram of the outer part of the application Figure 3 Structure diagram of the outer part of the application

[0022] Figure 5 Structure diagram of the outer part of the application Figure 3 Structure diagram of the outer part of the application

[0023] In the figure: 1, the body; 2, the roller; 21, the blade; 22, the side plate; 23, the driving gear; 3, the feeder; 31, the feeding wheel; 311, the driven gear; 32, the connecting base; 4, the discharge baffle; 5, the sealing plate; 51, the sealing sleeve; 6, the sewage chamber; 61, the overflow; 62, the drainage plate; 7, the movable plate; 8, the side door plate; 9, the driving motor; 10, the discharge plate; 11, the water spraying part. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0025] Please refer to Figures 1-2 A quartz sand cleaning device for producing silicon powder, which comprises a body 1, a driving motor 9 mounted on the outside of the body 1, the driving motor 9 being connected with an external power supply, and the output shaft of the driving motor 9 being connected with a speed reducer mounted on the outside of the body 1 through a transmission belt, a roller 2 movably mounted in the body 1, the central shaft of the roller 2 being movably connected with the body 1 and connected with the output shaft of the speed reducer on the outside of the body 1, and the roller 2 being capable of slowly rotating in the counterclockwise direction shown in the figure when the driving motor 9 works. Figure 1 The outer end of the body 1 is provided with a discharge plate 10, and the quartz sand in the roller 2 is discharged onto the discharge plate 10 after being cleaned, and then enters the next stage of the silicon powder production line from the discharge plate 10, which is prior art and will not be described here; please refer to Figure 3 A feeder 3 is mounted at the feeding port of the body 1, and the feeder 3 is movably connected with a feeding wheel 31 through a rotating shaft, please refer to Figure 2, the end of the feeding wheel 31 extending to the outside of the feeder 3 is connected with the driven gear 311, the outer end of the roller 2 is connected with the driving gear 23, the driving gear 23 and the driven gear 311 are linked through the gear belt transmission structure, when the roller 2 starts to work, it can drive the feeding wheel 31 to rotate, so that the quartz sand entering the feeding wheel 31 can enter the machine body 1 at a uniform speed, which plays a buffering effect, avoids the problem that the excessive quartz sand discharged in one time in the previous production process reduces the cleaning effect of the equipment, thereby improving the cleaning effect of the quartz sand cleaning equipment, and making the quartz sand cleaning equipment more suitable for the production of silicon powder.

[0026] Please refer to Figure 4 , the bottom of the feeder 3 is connected with the machine body 1 through the connecting base 32, the connecting base 32 is composed of an elastic spring and a telescopic rod body which can freely extend and retract, the telescopic rod body is in an arc structure, the arc line of the arc structure takes the rotation center axis of the roller 2 as the center, so that the connecting base 32 can stretch and retract under pressure without affecting the linkage between the driven gear 311 and the driving gear 23, a lower discharging baffle 4 is arranged below the bottom outlet of the feeder 3, the bottom of the lower discharging baffle 4 is connected with the machine body 1, and one end of the lower discharging baffle 4 is connected with a torsion spring shaft, in the natural state, the outer side of the lower discharging baffle 4 is in a vertical state, when the feeder 3 receives too much material, the amount of quartz sand entering the machine body 1 in one time will also increase, at this time, the overall mass increases and exceeds the elastic support force of the connecting base 32, so that the connecting base 32 retracts and the feeder 3 moves downward, the feeder 3 moves downward at the same time to exert pressure on the left end of the lower discharging baffle 4, and the right end of the lower discharging baffle 4 deflects upward, so as to reduce the bottom outlet of the feeder 3, when the amount of material in the feeder 3 returns to the standard value, the feeder 3 returns to the original position, and the lower discharging baffle 4 also returns to the original position, so that the bottom discharge opening of the feeder 3 normally opens, through the cooperation of the feeder 3 and the lower discharging baffle 4, the balance of the discharge of the feeder 3 can be realized, so that the equipment can realize automatic balance of the feeding rate, avoid the problem that the quartz sand is not completely cleaned due to excessive pressure loss of the external feeding, thereby improving the quartz sand cleaning efficiency of the equipment and improving the cleaning effect of the quartz sand.

[0027] Please refer to Figure 3, the internal structure of the body 1 is a semicircular structure coaxial with the roller 2, the body 1 is internally provided with a sewage chamber 6, the sewage chamber 6 is located below the roller 2, and the right side of the top of the sewage chamber 6 is provided with an overflow port 61, the filter hole of the overflow port 61 is smaller than the diameter of the quartz sand, so that most of the quartz sand will not enter the sewage chamber 6, when the water level in the body 1 is too high, the overflow effect can be achieved through the overflow port 61, avoiding the problem of water overflow in the body 1; the roller 2 is connected with a plurality of blades 21, the blades 21 are evenly distributed in the roller 2, which can realize the cleaning and discharge of the quartz sand, the outer edge of the roller 2 is connected with a plurality of evenly distributed side plates 22, the side plates 22 are distributed with the blades 21, and the outer side of the side plates 22 is connected with bristles, which can contact with the inner wall of the body 1, and can brush the outside of the quartz sand, improve the cleaning efficiency of the equipment on the quartz sand, and the brushing of the side plates 22 on the inner wall of the body 1 can also avoid the problem of blockage of the overflow port 61; please refer to Figure 5 , the middle position of the top of the sewage chamber 6 is provided with a drainage plate 62, the drainage plate 62 communicates the inside of the body 1 with the sewage chamber 6, and the size of the filter hole of the drainage plate 62 is smaller than the outer diameter of the quartz sand, avoiding the problem of leakage of the quartz sand from the drainage plate 62, the bottom of the drainage plate 62 is provided with an enclosing plate 5 installed in the sewage chamber 6, the bottom of the enclosing plate 5 is connected to the bottom of the sewage chamber 6 through an elastic rod, the outer side of the elastic rod is provided with a sealing sleeve 51, which can avoid the problem of sewage erosion of the accessories, and the top of the enclosing plate 5 is movably inserted into the drainage plate 62 in a natural state, one side of the top of the enclosing plate 5 connected with the drainage plate 62 is connected with a rubber layer, which can ensure the sealing of the drainage plate 62 by the elasticity of the rubber, and the top of the enclosing plate 5 is internally connected with a magnetic block, the inside of the side plate 22 is also connected with a magnetic block, the opposite sides of the enclosing plate 5 and the side plate 22 are magnetically the same, and the magnetic repulsion when the enclosing plate 5 and the side plate 22 are close can make the connecting part of the bottom of the enclosing plate 5 shorten, so when the side plate 22 approaches the drainage plate 62 with the working of the roller 2, the enclosing plate 5 moves down and away from the drainage plate 62, at this time the sewage in the bottom of the body 1 can be discharged to the sewage chamber 6 through the drainage plate 62, realizing the effect of periodic overflow of the bottom, which can timely discharge the sewage in the body 1, can adapt to the situation that most of the main pollutants in the sewage are settled in the bottom, and can maintain the cleaning efficiency of the equipment on the quartz sand by cooperating with the water source supplementing effect of the water spraying part 11, avoiding the problem that the sewage gathered in the bottom of the traditional structure body 1 cannot be discharged in time, and also does not need driving accessories such as water pump, improving the energy efficiency, which is conducive to the production operation of the silicon powder production line.

[0028] Please refer to Figure 3 , the top of the side of the sewage chamber 6 close to the inlet of the body 1 is connected with a movable plate 7, the movable plate 7 is movably connected with the inner wall of the body 1 and the sewage chamber 6 through soft material, please refer to Figure 5The bottom of the movable plate 7 is connected with the top end of the sealing plate 5, when the sealing plate 5 is lowered to overflow and discharge the sewage to increase the cleaning effect of the device on the quartz sand, the movable plate 7 is also lowered, so that the internal space of the body 1 is increased, and the quartz sand can enter the body 1, the time of mutual contact of the quartz sand in the body 1 is increased, when the sealing plate 5 returns to the original position, the movable plate 7 also returns to the original position and the internal structure of the body 1 returns to the initial position, at this time, the friction between the quartz sand is greatly increased when the roller 2 passes through the inner wall of the body 1, so that the cleaning efficiency of the device on the quartz sand is improved, and the quartz sand can be conveniently discharged when the roller 2 rotates; meanwhile, the movement of the movable plate 7 can also promote the sedimentation of dust contained in the cleaning water in the body 1 to the bottom, which is beneficial to the discharge of the sewage from the drainage plate.

[0029] Please refer to Figure 3 The sewage discharge cavity 6 is provided with a side door plate 8 which is also installed on the body 1, the side door plate 8 is movably connected through a hinge shaft, the inner side of the side door plate 8 is connected with a sealing rubber strip at a position in contact with the body 1, the outside of the side door plate 8 is provided with a lock catch which is matched with the outside of the body 1, so that the side door plate 8 can be closed and fixed, and the side door plate 8 can be conveniently opened, and the bottom of the side door plate 8 is connected with an external pipeline, so that the sewage in the sewage discharge cavity 6 can be conveniently discharged.

[0030] The working principle of the use method of the present application is as follows: the quartz sand cleaning device is installed at a corresponding position on the silicon powder production line, so that the quartz sand raw material enters the device from the feeder 3 and is discharged from the discharge plate 10 to the next production and processing stage of the production line, the power supply is connected, before use, the power supply is started to make the device idle, and after the parts are checked to be normal, the device is put into use; the water spraying part 11 is connected with an external water pipe and generates high-pressure water flow, the quartz sand to be cleaned enters the feeder 3 from the top of the feeder 3, the output of the driving motor 9 drives the roller 2 to rotate in the direction of the arrow A after being decelerated by the speed reducer, and the quartz sand is cleaned by the water spraying part 11 and the roller 2, and then the quartz sand is discharged from the discharge plate 10 to the next production and processing stage of the production line. Figure 1The slow counterclockwise rotation of the roller 2 rotates the driving gear 23 and the driven gear 311, and the rotation of the feeding wheel 31 allows the quartz sand in the feeder 3 to enter the body 1 from the bottom of the feeder 3; when the quartz sand in the feeder 3 is excessive, the overall mass of the feeder 3 increases, causing the connecting base 32 to be compressed and contracted, and the feeder 3 to move downward along the arc direction of the roller 2, and the downward feeding baffle 4 is deflected by the pressure of the feeder 3, so that the bottom outlet of the feeder 3 is partially blocked, and finally the amount of quartz sand discharged from the feeder 3 is stabilized; when the quartz sand in the feeder 3 is not excessive, the connecting base 32 returns to its original position, and the downward feeding baffle 4 also returns to its original position; at the same time, the water spraying part 11 sprays high-pressure water flow to achieve the flushing effect of the quartz sand entering the body 1, and the quartz sand enters the body 1, the roller 2 rotates and promotes the mutual friction and flushing between the quartz sand, and the bristles outside the side plate 22 also achieve the friction cleaning effect on the quartz sand, so that the dirt and dust attached to the outside of the quartz sand fall off, and the cleaned quartz sand enters the blade 21 with the rotation of the roller 2, and when the blade 21 passes through the discharge plate 10, the cleaned quartz sand falls on the discharge plate 10 and is discharged to the next stage of the silicon powder production line; when the side plate 22 rotates through the drain plate 62, the magnetic repulsion of the side plate 22 causes the sealing plate 5 to move downward, at this time the holes on the drain plate 62 are in an open state, and the sewage at the bottom of the body 1 flows into the drain cavity 6 through the drain plate 62 and is discharged through the drain pipe on the side door plate 8; when the side plate 22 moves away from the drain plate 62, the sealing plate 5 is resealed under the action of the bottom connecting spring, and at the same time, when the side plate 22 passes through the drain plate 62, the bristles outside the side plate 22 can dredge the drain plate 62, so that the drain plate 62 is not blocked; when the sealing plate 5 moves downward with the approach of the side plate 22, the movable plate 7 is driven to move downward, so that the residence time of the quartz sand in the body 1 and the mutual friction between the quartz sand are increased, and when the liquid level in the body 1 is too high, the excess water flows into the drain cavity 6 through the overflow port 61 and is discharged; when the equipment needs to be maintained and cleaned in the later stage, the side door plate 8 on the side of the body 1 is opened, and the interior of the body 1 can be cleaned and operated.

[0031] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0032] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A quartz sand cleaning device for producing silicon micro powder, comprising a machine body (1), an inside of the machine body (1) is provided with a working cavity, a roller (2) is installed in the working cavity of the machine body (1), an outside of the machine body (1) is provided with a driving motor (9), an output shaft of the driving motor (9) is connected with a central rotating shaft of the roller (2) through a speed reducer, and an outside of the machine body (1) is provided with a discharging plate (10), characterized in that: The machine body (1) is provided with a feeder (3) on the feeding side, and a lower discharging baffle (4) is arranged below the feeder (3); a sewage cavity (6) is arranged below the cleaning cavity in the machine body (1); a side door plate (8) is arranged on the outer side of the sewage cavity (6); a sealing plate (5) is arranged in the sewage cavity (6); the bottom of the sealing plate (5) is connected to the bottom of the sewage cavity (6); the sealing plate (5) is movably connected to the sewage cavity (6) through an elastic rod; an activity plate (7) is connected to the bottom of the machine body (1); the outer side of the activity plate (7) is movably connected to the inner wall of the machine body (1) and the sewage cavity (6) through a soft material; the bottom of the activity plate (7) is connected to the top end of the sealing plate (5); and the activity plate (7) forms a corresponding semicircle with the working cavity in the machine body (1) in the natural state of the sealing plate (5); the activity plate (7) also moves downward when the sealing plate (5) moves; and a water spraying part (11) is arranged on the feeding side of the machine body (1). ​ 2. The quartz sand cleaning device for producing silicon powder according to claim 1, characterized in that: The central axis of the roller (2) is concentric with the central axis of the cleaning space in the machine body (1); the roller (2) is provided with blades (21) connected to the inside of the roller (2); the blades (21) are annularly and uniformly distributed; the roller (2) is provided with side plates (22) connected to the outer edge of the roller (2); the side plates (22) are located at the outer ends of the blades (21) and are uniformly distributed with intervals between the blades (21); and the outer end of the central axis of the roller (2) is connected to a driving gear (23).

3. The quartz sand cleaning device for producing silicon powder according to claim 2, characterized in that: The sewage cavity (6) is arranged in the machine body (1); an overflow port (61) is arranged at the top of the right end of the sewage cavity (6); a drainage plate (62) is arranged at the position of the bottom of the working cavity in the machine body (1); the inner diameters of the filter holes of the overflow port (61) and the drainage plate (62) are smaller than the outer diameter of the quartz sand; and the bottom surface of the sewage cavity (6) is a slope that allows water to flow to the side door plate (8).

4. The quartz sand cleaning apparatus for producing silicon powder according to claim 3, characterized in that: The top of the sealing plate (5) is clamped to the bottom of the drainage plate (62) in the natural state; a sealing rubber layer is arranged at the position where the sealing plate (5) contacts the drainage plate (62); and the top end of the sealing plate (5) has magnetism.

5. The quartz sand cleaning apparatus for producing silicon powder according to claim 3, characterized in that: The side plates (22) have magnetism; the magnetic polarities of the side plates (22) at the positions opposite to the sealing plate (5) are the same as that of the sealing plate (5); the magnetic repulsion between the side plates (22) and the sealing plate (5) when the side plates (22) pass through the sealing plate (5) causes the sealing plate (5) to move away from the drainage plate (62); and the outer side of the side plates (22) is connected to bristles that contact the inner wall of the machine body (1).

6. The quartz sand cleaning apparatus for producing silicon powder according to claim 2, characterized in that: The bottom of the feeder (3) is connected with the machine body (1) through a connecting base (32), which is a telescopic structure composed of a telescopic spring and a free telescopic rod body. The rod body is an arc structure, and the center of the arc is concentric with the roller (2). When the quartz sand in the feeder (3) is too much, the connecting base (32) shortens and makes the feeder (3) move downward. The inside of the feeder (3) is provided with a feeding wheel (31) installed through a rotating shaft. The outer end of the rotating shaft of the feeding wheel (31) is connected with a driven gear (311) located outside the feeder (3). The driven gear (311) is connected with the driving gear (23) through a gear transmission belt to realize linkage. The rotation of the roller (2) drives the rotation of the feeding wheel (31).

7. The quartz sand cleaning apparatus for producing silicon powder according to claim 6, characterized in that: The discharging baffle (4) is installed on the machine body (1) through a torsion spring shaft, and the discharging baffle (4) is located at the bottom outlet of the feeder (3). In the natural state, the discharging baffle (4) will not block the bottom outlet of the feeder (3). When the left end of the discharging baffle (4) is pressed when the feeder (3) moves downward, the right end of the discharging baffle (4) is deflected and closes a part of the bottom outlet of the feeder (3).

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