A silicon powder purification device

Abstract

The utility model relates to the technical field of silicon powder purification, especially a silicon powder purification device, which comprises a cleaning tank, a neutralizing tank and a collecting tank, the neutralizing tank is arranged at the right side of the cleaning tank, and the collecting tank is arranged below the cleaning tank; a liquid suction pump is fixed to the lower end of the cleaning tank, a liquid suction pipe that penetrates into the bottom of the cleaning tank is connected to the liquid suction port of the liquid suction pump, a filter screen is fixed to the upper end of the liquid suction pipe, a stirring shaft is arranged in the cleaning tank, a plurality of first stirring blades are fixed to the two sides of the stirring shaft, rotating shafts are fixed to the lower parts of the two sides of the stirring shaft, and cleaning brushes are arranged on the outer sides of the lower ends of the rotating shafts; the utility model is beneficial to the acid-base neutralization of waste liquid, saves time, improves the waste liquid neutralization efficiency, effectively avoids the pollution of the environment caused by the direct discharge of acidic solution, effectively reduces the use amount of motors during the working process, and is more economical and practical.

Description

Technical Field

[0001] This utility model relates to the field of silicon powder purification technology, and in particular to a silicon powder purification device. Background Technology

[0002] With human progress and social development, silica powder, a chemical material, has gradually been used in the production of various industries due to its special properties. Silica powder is widely used in the cement industry, rubber industry, water glass industry, insulation materials, waterproof materials, paints, coatings, and printing industry. However, the purity requirements of silica powder vary from industry to industry.

[0003] In existing technologies, although the waste liquid can be neutralized during the process of purifying silicon powder by acid washing with hydrochloric acid, the process of extracting the waste liquid for neutralization requires waiting for the silicon powder to precipitate after washing before the waste liquid can be extracted. This process takes a long time, resulting in low efficiency of waste liquid neutralization. Furthermore, although some devices use stirring blades to agitate the waste liquid and alkaline solution during the waste liquid neutralization process, the stirring blades in the washing tank and neutralization tank mostly need to be driven by independent motors, resulting in a large number of motors used, which is not economical and practical. Utility Model Content

[0004] This utility model provides a silicon powder purification device, which is beneficial to improving the efficiency of waste liquid neutralization and treatment, and is more economical and practical.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A silicon powder purification device includes a cleaning tank, a neutralization tank, and a collection tank, wherein the neutralization tank is located to the right of the cleaning tank and the collection tank is located below the cleaning tank.

[0007] A liquid pump is fixed at the lower end of the cleaning tank. The liquid pump's suction port is connected to a liquid suction pipe that extends to the bottom of the cleaning tank. A filter screen is fixed at the upper end of the liquid suction pipe. A stirring shaft is provided inside the cleaning tank. Several first stirring blades are fixed on both sides of the stirring shaft. Rotating shafts are fixed at the lower part of both sides of the stirring shaft. Cleaning brushes are connected to the outer side of the lower end of the rotating shafts. Any cleaning brush is in contact with the top of the filter screen. A delivery pipe connects the neutralization tank and the liquid pump.

[0008] The neutralization chamber is equipped with a synchronous shaft, and several second stirring blades are fixed on both sides of the synchronous shaft. A synchronous drive assembly is provided above the cleaning chamber.

[0009] Furthermore, the upper end of the cleaning tank is connected to a feed pipe.

[0010] Furthermore, the synchronous drive assembly includes a motor, a main gear, a secondary gear, and two pulleys. The motor is fixed to the upper end of the cleaning tank, the main gear is connected to the power end of the motor, the stirring shaft rotates through the top of the cleaning tank, and the secondary gear is fixedly sleeved around the stirring shaft and meshes with the main gear.

[0011] Furthermore, one of the pulleys is fixed to the upper end of the stirring shaft, the synchronous shaft rotates through the top of the neutralization tank, and the other pulley is fixed to the upper end of the synchronous shaft. The two pulleys are connected by a belt.

[0012] Furthermore, a solenoid valve is fixed inside the liquid extraction tube.

[0013] Furthermore, the upper end of the neutralization tank is connected to a liquid addition pipe, and the lower end of the neutralization tank is connected to a waste liquid valve.

[0014] Furthermore, a discharge valve is connected between the collection box and the cleaning box, and a discharge valve is connected to the lower left end of the collection box.

[0015] The beneficial effects of this utility model are:

[0016] 1. By adding silicon powder and hydrochloric acid into the cleaning tank and then mixing them with the first stirring blade, the silicon powder is effectively agitated and acid-washed, thus achieving the effect of purifying the silicon powder.

[0017] 2. During the process of pumping the waste liquid from the cleaning tank into the neutralization tank through the operation of the pump, the filter screen filters the silicon powder. Therefore, there is no need to wait for the silicon powder to settle after cleaning. The prepared alkaline solution is added to the neutralization tank, which facilitates the rapid acid-base neutralization of the waste liquid, saves time, improves the neutralization efficiency of the waste liquid, and effectively avoids the direct discharge of acidic waste liquid and environmental pollution.

[0018] 3. By setting a cleaning brush that rotates together with the stirring shaft, it is easy to automatically sweep and clean the silicon powder on the upper surface of the filter screen, avoid silicon powder clogging the filter screen, reduce the trouble of cleaning the filter screen, and effectively ensure the filtration efficiency of the filter screen.

[0019] 4. The synchronous drive component not only facilitates the stirring and cleaning of silicon powder in the cleaning tank by the first stirring blade, but also facilitates the sweeping and cleaning of the filter screen by the cleaning brush. Furthermore, it can also drive the second stirring blade to stir, mix, and neutralize the waste liquid and alkaline solution in the neutralization tank. This effectively reduces the amount of motor used during operation, making it more economical and practical. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2This is a schematic diagram of the overall internal structure of this utility model;

[0022] Figure 3 This is a partially enlarged structural diagram of part A of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Cleaning tank; 2. Neutralization tank; 3. Collection tank; 4. Feed pipe; 5. Stirring shaft; 6. First stirring blade; 7. Motor; 8. Main gear; 9. Secondary gear; 10. Pulley; 11. Liquid pump; 12. Liquid extraction pipe; 13. Solenoid valve; 14. Filter screen; 15. Rotating shaft; 16. Cleaning brush; 17. Conveying pipe; 18. Synchronous shaft; 19. Second stirring blade; 20. Liquid addition pipe; 21. Waste liquid valve; 22. Discharge valve; 23. Outlet valve. Detailed Implementation

[0025] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0026] like Figure 1-2 As shown, this embodiment includes a cleaning tank 1, a neutralization tank 2, and a collection tank 3. The neutralization tank 2 is located to the right of the cleaning tank 1, and the collection tank 3 is located below the cleaning tank 1. The cleaning tank 1 is equipped with a stirring shaft 5, and several first stirring blades 6 are fixed on both sides of the stirring shaft 5. A synchronous drive assembly is provided above the cleaning tank 1. The synchronous drive assembly includes a motor 7, a main gear 8, a secondary gear 9, and two pulleys 10. The motor 7 is fixed to the upper end of the cleaning tank 1, and the main gear 8 is connected to the power end of the motor 7. The stirring shaft 5 rotates through the top of the cleaning tank 1, and the secondary gear 9 is fixedly sleeved around the stirring shaft 5 and meshes with the main gear 8.

[0027] First, silicon powder and hydrochloric acid are added into the cleaning tank 1 through the feed pipe 4. Then, the motor 7 drives the main gear 8, the auxiliary gear 9, the stirring shaft 5 and the first stirring blade 6 to rotate. The first stirring blade 6 then stirs and mixes the silicon powder and hydrochloric acid, which facilitates the stirring and acid washing of the silicon powder and effectively achieves the effect of purifying the silicon powder.

[0028] like Figure 2-3 As shown, in this embodiment, a liquid pump 11 is fixed at the lower end of the cleaning tank 1. The liquid pump 11 has a liquid extraction pipe 12 that extends to the bottom of the cleaning tank 1. A filter screen 14 is fixed at the upper end of the liquid extraction pipe 12. A delivery pipe 17 connects the neutralization tank 2 and the liquid pump 11. A feed pipe 4 connects to the upper end of the cleaning tank 1. A solenoid valve 13 is fixed inside the liquid extraction pipe 12. A liquid addition pipe 20 connects to the upper end of the neutralization tank 2, and a waste liquid valve 21 connects to the lower end of the neutralization tank 2.

[0029] Next, after the silicon powder cleaning is completed and waste liquid is generated, the solenoid valve 13 is opened and the liquid pump 11 is started to extract the waste liquid in the cleaning tank 1. During this process, the waste liquid is filtered through the filter screen 14, that is, the silicon powder contained in the waste liquid will be filtered out by the filter screen 14. The waste liquid then enters the liquid pump 11 and the delivery pipe 17 through the solenoid valve 13 in sequence, and then the waste liquid is discharged into the neutralization tank 2 through the delivery pipe 17. Therefore, there is no need to wait for the silicon powder to settle after cleaning. The prepared alkaline solution is added to the neutralization tank 2 through the liquid addition pipe 20, which facilitates the rapid acid-base neutralization of the waste liquid, saves time, and improves the waste liquid neutralization efficiency. Finally, the neutralized waste liquid is discharged through the waste liquid valve 21, which effectively avoids the situation of direct discharge of acidic waste liquid and environmental pollution.

[0030] like Figure 3 As shown in this embodiment, a rotating shaft 15 is fixed to the lower part of both sides of the stirring shaft 5, and a cleaning brush 16 is connected to the outer side of the lower end of the rotating shaft 15, and any one of the cleaning brushes 16 is in contact with the filter screen 14.

[0031] Meanwhile, when the stirring shaft 5 rotates, it will drive the rotating shaft 15 and the cleaning brush 16 to rotate together. The rotating cleaning brush 16 will automatically sweep and clean the silicon powder on the filter screen 14, avoiding the silicon powder from clogging the filter screen 14 and reducing the hassle of cleaning the filter screen 14, thus effectively ensuring the filtration efficiency of the filter screen 14.

[0032] like Figure 2 As shown in this embodiment, the neutralization box 2 is provided with a synchronous shaft 18. Several second stirring blades 19 are fixed on both sides of the synchronous shaft 18. One of the pulleys 10 is fixed to the upper end of the stirring shaft 5. The synchronous shaft 18 rotates through the top of the neutralization box 2. The other pulley 10 is fixed to the upper end of the synchronous shaft 18. The two pulleys 10 are connected by a belt.

[0033] Furthermore, when the motor 7 is working and drives the stirring shaft 5 to rotate, the stirring shaft 5 will drive the pulley 10 to rotate together, and the pulley 10 will drive the synchronous shaft 18 and the second stirring blade 19 to rotate. Therefore, through the operation of the synchronous drive assembly, it is not only beneficial to drive the first stirring blade 6 to stir and clean the silicon powder in the cleaning tank 1, but also beneficial to drive the cleaning brush 16 to sweep and clean the filter screen 14, and can also drive the second stirring blade 19 to stir and mix the waste liquid and alkaline solution in the neutralization tank 2. The amount of motor 7 used is effectively reduced during the operation, thus making it more economical and practical.

[0034] like Figure 2 As shown, in this embodiment, a discharge valve 22 is connected between the collection box 3 and the cleaning box 1, and a discharge valve 23 is connected to the lower left end of the collection box 3.

[0035] Finally, after the waste liquid is discharged from the cleaning tank 1, the discharge valve 22 is opened to discharge the cleaned and purified silicon powder into the collection tank 3 for storage, and the discharge valve 23 is opened to facilitate the discharge of the silicon powder stored in the collection tank 3.

[0036] All technical features in this embodiment can be freely combined according to actual needs.

[0037] The above embodiments are preferred implementations of this utility model. In addition, other implementations are also included. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A silicon powder purification device, comprising a cleaning tank (1), a neutralization tank (2), and a collection tank (3), wherein the neutralization tank (2) is located to the right of the cleaning tank (1), and the collection tank (3) is located below the cleaning tank (1), characterized in that: The cleaning tank (1) is fixed with a liquid pump (11) at the lower end. The liquid pump (11) has a liquid pumping port connected to a liquid pumping pipe (12) that extends to the bottom of the cleaning tank (1). A filter screen (14) is fixed at the upper end of the liquid pumping pipe (12). The cleaning tank (1) is equipped with a stirring shaft (5). Several first stirring blades (6) are fixed on both sides of the stirring shaft (5). Rotating shafts (15) are fixed at the lower part of both sides of the stirring shaft (5). Cleaning brushes (16) are connected to the outer side of the lower end of the rotating shaft (15). Any cleaning brush (16) is in contact with the top of the filter screen (14). A delivery pipe (17) is connected between the neutralization tank (2) and the liquid pump (11). The neutralization box (2) is equipped with a synchronous shaft (18), and several second stirring blades (19) are fixed on both sides of the synchronous shaft (18). A synchronous drive assembly is provided above the cleaning box (1).

2. The silicon powder purification apparatus as described in claim 1, characterized in that: The upper end of the cleaning tank (1) is connected to the feed pipe (4).

3. The silicon powder purification apparatus as described in claim 1, characterized in that: The synchronous drive assembly includes a motor (7), a main gear (8), a secondary gear (9), and two pulleys (10). The motor (7) is fixed to the upper end of the cleaning tank (1). The main gear (8) is connected to the power end of the motor (7). The stirring shaft (5) rotates through the cleaning tank (1). The secondary gear (9) is fixedly sleeved around the stirring shaft (5) and meshes with the main gear (8).

4. The silicon powder purification apparatus as described in claim 3, characterized in that: One of the pulleys (10) is fixed to the upper end of the stirring shaft (5), and the synchronous shaft (18) rotates through the neutralization tank (2). The other pulley (10) is fixed to the upper end of the synchronous shaft (18), and the two pulleys (10) are connected by a belt.

5. The silicon powder purification apparatus as described in claim 1, characterized in that: A solenoid valve (13) is fixed inside the liquid extraction tube (12).

6. The silicon powder purification apparatus as described in claim 1, characterized in that: The upper end of the neutralization tank (2) is connected to a liquid addition pipe (20), and the lower end of the neutralization tank (2) is connected to a waste liquid valve (21).

7. The silicon powder purification apparatus as described in claim 1, characterized in that: The collection box (3) is connected to the cleaning box (1) by a discharge valve (22), and the lower left end of the collection box (3) is connected to a discharge valve (23).

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