Dust remover for silicon powder production

Abstract

The dust remover comprises a dust removal box and an air pipe, a collecting hopper is arranged at the lower end of the dust removal box, the bottom of the air pipe is communicated with a collecting cover, a filter screen is fixedly connected to an opening in the bottom of the collecting cover, a plurality of fixing frames are fixedly connected to the top of an inner cavity of the dust removal box, and filter elements are installed in the fixing frames. The left side of the dust removal box is fixedly connected with a mounting plate, the bottom of the mounting plate is fixedly connected with an air pipe, firstly, micro silicon powder can stay and be cooled when passing through all copper pipes through the cooling mechanism, compared with an original cooling mode, the cooling time of dust is longer, and the cooling effect is improved; and finally, the filter element is repeatedly vibrated through the discharging mechanism, so that the dust attached to the filter element can be treated in time, the amount of the attached dust is prevented from being increased, and the filtering effect of the filter element on the micro silicon powder is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of silicon powder dust removal, in particular to a dust collector for silicon powder production. Background Art

[0002] In the production of silicon powder, silica or silicon dioxide is used as raw material, which is crushed, ground and classified, then calcined at high temperature and cooled, and finally crushed, screened and packaged. During these processes, a large amount of microsilicon powder will be generated, floating in the form of dust and affecting the environment. The existing solution is to use dust removal equipment to process microsilicon powder. For example, patent application No. 202322434183.5 discloses a microsilicon powder separation and dust removal device, including a dust removal box, an exhaust pipe, a fan and a scraper, etc. The microsilicon powder is filtered through multiple filter elements to remove the dust. Adsorbed on the filter element, the collection plate and the shovel plate are used to scrape the surface of the filter element, so that the dust falls into the collecting hopper, thereby achieving the purpose of recovering microsilica powder and avoiding the waste of microsilica powder. The gas with microsilica powder is captured by the collection hood, and the heat in the gas is taken away by the heat dissipation plate. Combined with the cooperation of the cold water pipe and the condensate, it has a further cooling effect. The air duct is set in a curved setting to extend the time of the gas in the air duct, so that the condensate can fully cool the gas and avoid the high-temperature gas from affecting the internal structure of the dust removal box.

[0003] The above-disclosed dust removal scheme has the following defects in the process of processing microsilica powder: first, the collecting plate must always be located at the upper end of the filter element during the dust removal process, otherwise the dust will not be filtered and will pass directly through the gap between the top of the filter element and the dust removal box. As a result, the scraper cannot frequently scratch the surface of the filter element, resulting in untimely treatment of the dust attached to the surface of the filter element, causing the amount of attachment to gradually increase, blocking the tiny filter holes on the filter element, and affecting the filtering effect of the filter element on microsilica powder. Secondly, the microsilica powder will quickly flow from the collection hood through the air duct into the dust removal box with the air flow. The above-mentioned cooling method cannot make the dust stay and cool down before entering the dust removal box, resulting in a short cooling time for the dust, resulting in poor cooling effect. Finally, the collecting hopper can collect dust filtered out from multiple filter elements, which means that the two are interconnected. Then the dust can also bypass part of the bottom of the filter element from the collecting hopper, thereby reducing the dust removal effect on microsilica powder. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a dust collector for silicon powder production. Firstly, through the cooling mechanism, the micro silicon powder will stay and cool down when passing through each copper tube. Compared with the original cooling method, the dust is cooled for a longer time, which improves the cooling effect. Secondly, through the material blocking mechanism, the dust can only pass through the filter element during the dust removal process, avoiding the phenomenon of dust bypassing the filter element. Finally, the filter element is repeatedly vibrated by the feeding mechanism, so that the dust attached to the filter element can be processed in time, avoiding the increase of the attached dust amount, thereby ensuring the filtering effect of the filter element on micro silicon powder.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dust collector for silicon powder production comprises a dust box and an air duct, wherein a collecting hopper is arranged at the lower end of the dust box, a collecting hood is connected to the bottom of the air duct, a filter is fixedly connected to the opening at the bottom of the collecting hood, a plurality of fixing frames are fixedly connected to the top of the inner cavity of the dust box, a filter element is installed in the fixing frame, a mounting plate is fixedly connected to the left side of the dust box, the bottom of the mounting plate is fixedly connected to the air duct, a fan is fixedly connected to the right side of the dust box, an air inlet end of the fan is connected to the dust box, a cooling mechanism is arranged between the dust box and the air duct, a material blocking mechanism is arranged in the dust box, and a material unloading mechanism is arranged on the right side of the dust box;

[0007] Cooling mechanism: a sealing plate is fixedly connected to the right end of the air duct, a plurality of copper tubes are fixedly connected to the sealing plate, the plurality of copper tubes are distributed in a circle, the copper tubes are connected to the air duct, a groove is provided on the left side of the inner cavity of the dust removal box, the right end of the copper tube extends to the groove, the right end of the air duct is in the same plane as the left side of the groove, a first motor is fixedly connected to the left side of the dust removal box, the output shaft of the first motor extends into the groove and is fixedly connected to a rotating plate, the left side of the rotating plate is fitted with the left side of the groove, a through hole is provided on the rotating plate, and a nozzle located above the copper tube is fixedly connected to the bottom of the mounting plate;

[0008] Material blocking mechanism: an opening is provided on the left side of the dust removal box, a baffle is inserted at the opening of the dust removal box, the bottom of the mounting plate is in contact with the baffle, and a card slot adapted to the baffle is provided on the right side of the inner cavity of the dust removal box;

[0009] Unloading mechanism: A connecting rod is slidably connected through the right side of the dust removal box, and the left end of the connecting rod passes through all the mounting plates. The connecting rod is slidably connected to the mounting plate, and a knocking head located on the left side of each mounting plate is fixedly connected to the connecting rod. A connecting plate is fixedly connected at the right end of the connecting rod, and a spring is sleeved on the connecting rod. The right end of the spring is fixedly connected to the connecting plate, and the left end of the spring is fixedly connected to the dust removal box. A second motor is fixedly connected to the upper part of the right side of the dust removal box, and a half gear is fixedly sleeved on the output shaft of the second motor, and a rack is fixedly connected to the bottom side of the right end of the connecting rod, and the rack is meshed with the half gear.

[0010] Furthermore, a water tank located below the copper tube is fixedly connected to the left side of the dust removal box, an opening is provided at the top of the water tank, a water pump is provided at the bottom of the inner cavity of the water tank, the water outlet of the water pump is connected to a water pipe, and the water pipe is connected to the water inlet of the nozzle.

[0011] Furthermore, a shovel plate is fixedly connected to the left side of the inner cavity of the dust removal box, and the bottom of the shovel plate is in contact with the baffle.

[0012] Furthermore, a partition is fixedly connected inside the dust removal box, the partition is located below the connecting rod, and the upper part of the fixing frame passes through the partition and is fixedly connected.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. First, the cooling mechanism allows the microsilica powder to stay and cool down when passing through each copper tube. Compared with the original cooling method, the dust is cooled for a longer time, which improves the cooling effect. Secondly, the material blocking mechanism allows the dust to only pass through the filter element during the dust removal process, avoiding the phenomenon of dust bypassing the filter element. Finally, the filter element is repeatedly vibrated by the feeding mechanism, so that the dust attached to the filter element can be handled in time, avoiding the increase of the amount of attached dust and ensuring the filtering effect of the filter element on microsilica powder.

[0015] 2. The water pump and water tank enable the nozzle to circulate and spray cooling water, the shovel plate is used to facilitate the cleaning of dust on the baffle, and the partition is used to prevent dust from contacting the connecting rod upward, thereby reducing the smoothness of the connecting rod sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a side view structural diagram of the fixing frame of the utility model;

[0019] Figure 4 This is a schematic diagram of the sealing plate structure of the utility model;

[0020] Figure 5 It is a side view structural diagram of the rotating plate of the utility model.

[0021] In the figure: 1, dust removal box, 2 air duct, 3 fixed frame, 4 filter element, 5 collecting hopper, 6 collecting cover, 7 filter screen, 8 mounting plate, 9 fan, 10 sealing plate, 11 copper tube, 12 first motor, 13 rotating plate, 14 through hole, 15 nozzle, 16 baffle, 17 connecting rod, 18 knocking head, 19 connecting plate, 20 spring, 21 second motor, 22 half gear, 23 rack, 24 water tank, 25 water pump, 26 water pipe, 27 shovel plate, 28 partition. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0024] See attached Figure 1-5 As shown, a dust collector for silicon powder production includes a dust box 1 and an air duct 2, a collecting hopper 5 is arranged at the lower end of the dust box 1, a collecting hood 6 is connected to the bottom of the air duct 2, a filter screen 7 is fixedly connected to the opening at the bottom of the collecting hood 6, a plurality of fixing frames 3 are fixedly connected to the top of the inner cavity of the dust box 1, a filter element 4 is installed in the fixing frame 3, a mounting plate 8 is fixedly connected to the left side of the dust box 1, the bottom of the mounting plate 8 is fixedly connected to the air duct 2, a fan 9 is fixedly connected to the right side of the dust box 1, the air inlet end of the fan 9 is connected to the dust box 1, a cooling mechanism is arranged between the dust box 1 and the air duct 2, a material blocking mechanism is arranged in the dust box 1, and a material unloading mechanism is arranged on the right side of the dust box 1;

[0025] Cooling mechanism: A sealing plate 10 is fixedly connected to the right end of the air duct 2, and a plurality of copper tubes 11 are fixedly connected to the sealing plate 10. The plurality of copper tubes 11 are distributed in a circle, and the copper tubes 11 are connected to the air duct 2. A groove is provided on the left side of the inner cavity of the dust removal box 1, and the right end of the copper tube 11 extends to the groove. The right end of the air duct 2 is in the same plane as the left side of the groove. A first motor 12 is fixedly connected to the left side of the dust removal box 1, and the output shaft of the first motor 12 extends into the groove and is fixedly connected to a rotating plate 13. The left side of the rotating plate 13 is fitted with the left side of the groove. A through hole 14 is provided on the rotating plate 13. A nozzle 15 located above the copper tube 11 is fixedly connected to the bottom of the mounting plate 8;

[0026] Material blocking mechanism: an opening is provided on the left side of the dust removal box 1, a baffle 16 is inserted at the opening of the dust removal box 1, the bottom of the mounting plate 8 is in contact with the baffle 16, and a slot adapted to the baffle 16 is provided on the right side of the inner cavity of the dust removal box 1;

[0027] Unloading mechanism: A connecting rod 17 is slidably connected to the right side of the dust removal box 1, and the left end of the connecting rod 17 passes through all the mounting plates 8. The connecting rod 17 is slidably connected to the mounting plate 8. The connecting rod 17 is fixedly connected to a striking head 18 located on the left side of each mounting plate 8, and a connecting plate 19 is fixedly connected to the right end of the connecting rod 17. A spring 20 is sleeved on the connecting rod 17, and the right end of the spring 20 is fixedly connected to the connecting plate 19. The left end of the spring 20 is fixedly connected to the dust removal box 1, and a second motor 21 is fixedly connected to the upper part of the right side of the dust removal box 1, and a half gear 22 is fixedly sleeved on the output shaft of the second motor 21, and a rack 23 is fixedly connected to the bottom side of the right end of the connecting rod 17, and the rack 23 meshes with the half gear 22.

[0028] A water tank 24 located below the copper tube 11 is fixedly connected to the left side of the dust removal box 1. An opening is provided at the top of the water tank 24. A water pump 25 is provided at the bottom of the inner cavity of the water tank 24. The water outlet of the water pump 25 is connected to a water pipe 26, and the water pipe 26 is connected to the water inlet of the nozzle 15.

[0029] A shovel plate 27 is fixedly connected to the left side of the inner cavity of the dust removal box 1 , and the bottom of the shovel plate 27 is in contact with the baffle 16 .

[0030] A partition plate 28 is fixedly connected inside the dust removal box 1 . The partition plate 28 is located below the connecting rod 17 . The upper portion of the fixing frame 3 passes through the partition plate 28 and is fixedly connected thereto.

[0031] Working principle: In the present invention, when filtering the high-temperature microsilica powder generated by calcination, water for cooling is stored in the water tank 24 in advance, and the water pump 25 is started to transport water from the water pipe 26 to each nozzle 15. The nozzle 15 sprays water downward onto each copper tube 11 to keep the copper tube 11 at a low temperature. The sprayed water falls back into the water tank 24, and is circulated in this way. The fan 9 is started, and the impurities are blocked by the filter screen 7. The microsilica powder follows the air flow and enters the air duct 2 from the collection cover 6. The first motor 12 drives the rotating plate 13 to rotate. When the through hole 14 on the rotating plate 13 corresponds to a copper tube 11, the dust in the air duct 2 enters the copper tube 11 along with the air flow, and along with the through hole After 14 rotates out of alignment, the dust stays in this copper tube 11. The copper tube 11 with a lower temperature exchanges heat with the dust to cool the dust. As the rotating plate 13 continues to rotate, all copper tubes 11 will gradually retain dust. When the through hole 14 corresponds to the copper tube 11 where dust has already been retained, the dust retained in this copper tube 11 has been cooled down and enters the dust removal box 1 with the air flow. Moreover, the dust in the air duct 2 enters this copper tube 11 again with the air flow to cool down. Then, as the rotating plate 13 rotates at a uniform speed, the dust in the air duct 2 will enter each copper tube 11 in turn to stay and cool down, and then enter the dust removal box 1 in turn. The dust is in the dust removal box 1 and moves to the dust removal box 1. The air cannot pass through the partition 28 upwards, nor can it pass through the baffle 16 downwards, and can only pass through the filter elements 4 one by one with the airflow. The filter element 4 filters the dust, and the air is blown out by the fan 9. The dust adheres to the filter element 4, and the second motor 21 drives the half gear 22 to rotate counterclockwise. When the half gear 22 is rotating and meshing with the rack 23, the half gear 22 drives the rack 23 to move left, and the rack 23 drives the connecting rod 17 to move, and the connecting rod 17 drives the connecting plate 19 to squeeze the spring 20, and the knocking head 18 moves synchronously with the connecting rod 17. When the gear teeth of the half gear 22 are disengaged from the rack 23, the spring 20 pushes the connecting plate 19 to reset to the right, and the connecting plate 19 drives The connecting rod 17 moves, and the connecting rod 17 drives the knocking head 18 to knock on each fixed frame 3, and then under the continuous rotation of the half gear 22, the knocking head 18 repeatedly knocks on the fixed frame 3, and the vibration generated by knocking the fixed frame 3 is transmitted to the filter element 4, and the dust attached to the surface of the filter element 4 is shaken off in time. After the dust removal work is completed, the baffle 16 is pulled out of the dust removal box 1 to the left, and the shovel plate 27 cleans the dust on the baffle 16. After the baffle 16 is completely pulled out of the dust removal box 1, the dust originally on the baffle 16 all falls into the collecting hopper 5. If the microsilicon powder that needs to be dusted does not need to be cooled, the same steps as the above method are performed, except that the water pump 25 is not needed to be activated to cool the copper tube 11.

[0032] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dust collector for silicon powder production, comprising a dust collecting box (1) and an air duct (2), wherein a collecting hopper (5) is arranged at the lower end of the dust collecting box (1), a collecting hood (6) is connected to the bottom of the air duct (2), and a filter screen (7) is fixedly connected to the opening at the bottom of the collecting hood (6), characterized in that: A plurality of fixing frames (3) are fixedly connected to the top of the inner cavity of the dust removal box (1), a filter element (4) is installed in the fixing frame (3), a mounting plate (8) is fixedly connected to the left side of the dust removal box (1), the bottom of the mounting plate (8) is fixedly connected to the air duct (2), a fan (9) is fixedly connected to the right side of the dust removal box (1), the air inlet end of the fan (9) is connected to the dust removal box (1), a cooling mechanism is provided between the dust removal box (1) and the air duct (2), a material blocking mechanism is provided in the dust removal box (1), and a material unloading mechanism is provided on the right side of the dust removal box (1); Cooling mechanism: a sealing plate (10) is fixedly connected to the right end of the air duct (2), a plurality of copper tubes (11) are fixedly connected to the sealing plate (10), the plurality of copper tubes (11) are distributed in a circular pattern, the copper tubes (11) are in communication with the air duct (2), a groove is provided on the left side of the inner cavity of the dust removal box (1), the right end of the copper tube (11) extends to the groove, the right end of the air duct (2) and the left side of the groove are in the same plane, a first motor (12) is fixedly connected to the left side of the dust removal box (1), the output shaft of the first motor (12) extends into the groove and is fixedly connected to a rotating plate (13), the left side of the rotating plate (13) is in contact with the left side of the groove, a through hole (14) is provided on the rotating plate (13), and a nozzle (15) located above the copper tube (11) is fixedly connected to the bottom of the mounting plate (8); Material blocking mechanism: the dust removal box (1) is provided with an opening on the left side, a baffle (16) is inserted into the opening of the dust removal box (1), the bottom of the mounting plate (8) is in contact with the baffle (16), and a slot matching the baffle (16) is provided on the right side of the inner cavity of the dust removal box (1); The unloading mechanism: a connecting rod (17) is slidably connected to the right side of the dust removal box (1), the left end of the connecting rod (17) passes through all the mounting plates (8), the connecting rod (17) is slidably connected to the mounting plates (8), a striking head (18) located on the left side of each mounting plate (8) is fixedly connected to the connecting rod (17), a connecting plate (19) is fixedly connected to the right end of the connecting rod (17), a spring (20) is sleeved on the connecting rod (17), the right end of the spring (20) is fixedly connected to the connecting plate (19), the left end of the spring (20) is fixedly connected to the dust removal box (1), a second motor (21) is fixedly connected to the upper part of the right side of the dust removal box (1), the output shaft of the second motor (21) is fixedly sleeved with a half gear (22), and a rack (23) is fixedly connected to the bottom side of the right end of the connecting rod (17), and the rack (23) is meshed with the half gear (22).

2. A dust collector for silicon powder production according to claim 1, characterized in that: The left side of the dust removal box (1) is fixedly connected to a water tank (24) located below the copper tube (11); the top of the water tank (24) is provided with an opening; the bottom of the inner cavity of the water tank (24) is provided with a water pump (25); the water outlet of the water pump (25) is connected to a water pipe (26); and the water pipe (26) is connected to the water inlet of the nozzle (15).

3. A dust collector for silicon powder production according to claim 1, characterized in that: A shovel plate (27) is fixedly connected to the left side of the inner cavity of the dust removal box (1), and the bottom of the shovel plate (27) is in contact with the baffle plate (16).

4. A dust collector for silicon powder production according to claim 1, characterized in that: A partition plate (28) is fixedly connected inside the dust removal box (1), the partition plate (28) is located below the connecting rod (17), and the upper part of the fixed frame (3) passes through the partition plate (28) and is fixedly connected.

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