Classification treatment and recovery device for polycrystalline silicon wastewater

Abstract

The utility model discloses a polycrystalline silicon wastewater classification treatment and recovery device, which belongs to the field of polycrystalline silicon wastewater treatment and comprises a sedimentation tank, a water inlet tank for preliminary filtration is fixedly connected to one side of the sedimentation tank, and a collection tank for collecting sediments is fixedly connected to the bottom end of the sedimentation tank. A cleaning structure used for scraping residues on the inner wall of the sedimentation tank is fixedly mounted in the sedimentation tank, an evaporation box used for further filtration is fixedly mounted at the top end of the sedimentation tank, a stirring structure used for assisting evaporation and filtration is fixedly mounted in the evaporation box, and a heater is connected with a heating pipe to heat the interior of the evaporation box, so that impurities are further separated; the vaporized purified water is discharged from the recovery pipe, and the threaded scraper rotates to stir the clean water in the evaporation box, so that impurities and salt are effectively separated, the thorough purification effect is effectively achieved, the probability of generating secondary pollution and wastes such as sludge is avoided, the separation effect of the device is guaranteed, and subsequent recycling is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of polysilicon wastewater treatment, in particular to a polysilicon wastewater classification treatment and recovery device. Background Art

[0002] Polysilicon wastewater contains a large amount of organic, inorganic, heavy metal and other pollutants, such as chlorides, fluorides, silicates, etc. Direct discharge will have adverse effects on the natural environment, so it needs to be purified before discharge.

[0003] A Chinese patent discloses a polysilicon wastewater treatment device (publication number 6N 206428045U), which includes a device body, a water inlet pipe, a water outlet pipe, and a mud discharge pipe; the device body is provided with a sedimentation zone, a reaction zone, a sedimentation separation zone, and a drainage zone in order from bottom to top; a central tube is provided in the reaction zone, and an inner tube is provided in the central tube; the water inlet pipe passes through the device body and the central tube, and the outlet of the water inlet pipe is connected to the inlet of the inner tube, and the outlet of the inner tube is connected to the central tube; the outlet of the central tube is connected to the sedimentation zone; the water outlet pipe passes through the device body, and the inlet of the water outlet pipe is connected to the drainage zone, and the mud discharge pipe passes through the device body, and the inlet of the mud discharge pipe is connected to the sedimentation zone; the inner tube is provided with a ... A partition with a forward and reverse spiral structure is provided, and plug plates are cross-arranged in the central tube. The polysilicon wastewater treatment device of the utility model can more effectively carry out oxidation coagulation and sedimentation, so as to better purify the polysilicon wastewater. However, the sedimentation zone of the patent cannot completely remove impurities in the wastewater, and may easily produce secondary pollution and wastes such as sludge. In addition, the treatment effect on high-concentration and high-salinity wastewater is poor. Salt itself is easily soluble, which makes it difficult to remove the residual salt in the wastewater, reducing the separation effect of the device, which is not conducive to subsequent recycling and utilization, making the device have certain limitations and reducing its practical value. Utility Model Content

[0004] The purpose of the utility model is to provide a polysilicon wastewater classification treatment and recovery device to solve the problems raised in the above background technology.

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

[0006] A polysilicon wastewater classification treatment and recovery device comprises a sedimentation tank, one side of the sedimentation tank is fixedly connected to a water inlet box for preliminary filtration, the bottom end of the sedimentation tank is fixedly connected to a collection box for collecting sediments, a cleaning structure for scraping residues on the inner wall of the sedimentation tank is fixedly installed inside the sedimentation tank, an evaporation box for further filtration is fixedly installed on the top of the sedimentation tank, and a stirring structure for assisting evaporation and filtration is fixedly installed inside the evaporation box.

[0007] As a further solution of the utility model, a delivery pipe for delivering settled water is fixedly connected to one side of the evaporation box away from the water inlet tank, a heater is fixedly connected to the other side of the evaporation box, and a heating pipe for heating the inside of the evaporation box is fixedly connected to one side of the heater.

[0008] As a further solution of the utility model, a recovery pipe for recovering steam is fixedly connected to one side of the evaporation box close to the delivery pipe, and an output pipe for discharging impurities is installed at the bottom end of the recovery pipe.

[0009] As a further solution of the utility model, the stirring structure includes a driving motor for providing power to the equipment, the output end of the driving motor is fixedly connected to a rotating rod, and the outer wall of the rotating rod is fixedly connected to a threaded scraper for stirring and scraping off adhesions.

[0010] As a further solution of the utility model, the cleaning structure includes a rotating shaft, and four groups of fixed pipes are fixedly connected to the outer wall of the rotating shaft. A scraper for scraping impurities off the inner wall of the sedimentation tank is installed on one side of each group of fixed pipes.

[0011] As a further solution of the utility model, a water inlet pipe is fixedly connected to one side of the water inlet tank, a filter plate for preliminarily filtering large particles of impurities in the wastewater is fixedly connected inside the water inlet tank, and a sewage pipe for discharging sediment is fixedly connected to one side of the collecting box.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When the utility model is used, the interior of the evaporator is heated by connecting the heater to the heating tube to further separate impurities. The vaporized clean water is discharged from the recovery pipe and rotated by the threaded scraper to stir the clean water inside the evaporator, effectively separating impurities and salts, effectively achieving a thorough purification effect, avoiding the probability of generating secondary pollution and waste such as sludge, ensuring the separation effect of the device, facilitating subsequent recycling, reducing the limitations of the device, and improving the practical value of the device.

[0014] 2. When the utility model is used, the rotating rod drives the rotating frame connected to the scraper to rotate accordingly to clean the inner wall of the evaporator box, and the motor is connected to the rotating shaft to drive the fixed tube to control the scraper to rotate, so as to scrape off the sediment adhered to the inner wall of the sedimentation tank, thereby realizing automatic and efficient cleaning and maintenance, improving the effect of the device, maintaining the normal operation of the device, and reducing manual intervention and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the overall structure of a polysilicon wastewater classification treatment and recovery device.

[0016] Figure 2 This is a cross-sectional view of the internal structure of a polysilicon wastewater classification treatment and recovery device.

[0017] Figure 3 It is a cross-sectional view of an output pipe in a polysilicon wastewater classification treatment and recovery device.

[0018] Figure 4 This is a structural diagram of a stirring structure in a polysilicon wastewater classification treatment and recovery device.

[0019] Figure 5 This is a structural diagram of an electric rod in a polysilicon wastewater classification treatment and recovery device.

[0020] In the figure: 1, sedimentation tank; 2, water inlet tank; 3, collection tank; 4, evaporation tank; 5, driving motor; 6, rotating shaft; 7, water outlet pipe; 8, water pump; 9, water inlet pipe; 10, filter plate; 11, sewage pipe; 12, support rod; 401, delivery pipe; 402, heater; 403, heating pipe; 404, recovery pipe; 405, output pipe; 406, electric rod; 407, baffle; 408, discharge pipe; 409, mounting frame; 501, rotating rod; 502, threaded scraper; 503, rotating frame; 504, scraper; 601, motor; 602, fixed pipe; 603, scraper; 604, connecting pipe; 605, telescopic rod; 606, spring. DETAILED DESCRIPTION

[0021] 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 the embodiments. 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.

[0022] Example 1: Please refer to Figure 1-2 A polysilicon wastewater classification treatment and recovery device comprises a sedimentation tank 1, one side of the sedimentation tank 1 is fixedly connected to a water inlet box 2 for preliminary filtration, the bottom end of the sedimentation tank 1 is fixedly connected to a collecting box 3 for collecting sediments, a cleaning structure for scraping off residues on the inner wall of the sedimentation tank 1 is fixedly installed inside the sedimentation tank 1, an evaporation box 4 for further filtration is fixedly installed on the top of the sedimentation tank 1, and a stirring structure for assisting evaporation and filtration is fixedly installed inside the evaporation box 4.

[0023] Example 2: Please refer to Figure 1-2A delivery pipe 401 for delivering settled water is fixedly connected to one side of the evaporation box 4 away from the water inlet tank 2, a heater 402 is fixedly connected to the other side of the evaporation box 4, a heating pipe 403 for heating the inside of the evaporation box 4 is fixedly connected to one side of the heater 402, and a total of multiple groups of heating pipes 403 are arranged and symmetrically and evenly distributed on the outer wall of the evaporation box 4, and are regularly wound and fixedly installed on the outside of the evaporation box 4.

[0024] See also Figure 2-3 A recovery pipe 404 for recovering steam is fixedly connected to one side of the evaporation box 4 close to the delivery pipe 401, and an output pipe 405 for discharging impurities is installed at the bottom of the recovery pipe 404. An electric rod 406 is fixedly connected to one end of the output pipe 405, and a baffle 407 for blocking the outflow of impurities is fixedly connected to one end of the electric rod 406. The baffle 407 is pushed to fit the evaporation box 4 by the electric rod 406, so as to achieve the effect of controlling the discharge state of the output pipe 405;

[0025] Specifically, the bottom end of the output pipe 405 is fixedly connected to the discharge pipe 408, and a leakage groove is provided on one side of the output pipe 405 close to the discharge pipe 408;

[0026] More specifically, a mounting frame 409 is fixedly connected to the outside of the electric rod 406 , and one side of the mounting frame 409 is fixedly connected to the outer wall of the output tube 405 .

[0027] See also Figure 2 , Figure 4 The stirring structure includes a driving motor 5 for providing power to the device. The driving motor 5 is fixedly installed on the top of the heater 402 and is fixedly connected to the outer wall of the evaporation box 4. The output end of the driving motor 5 is fixedly connected to a rotating rod 501. One end of the rotating rod 501 passes through the interior of the evaporation box 4 and is rotatably connected to the inner wall of the evaporation box 4 through a bearing. The outer wall of the rotating rod 501 is fixedly connected to a threaded scraper 502 for stirring and scraping off adhesions. The thread direction of the threaded scraper 502 is to rotate toward the output pipe 405 to push impurities toward the output pipe 405.

[0028] Specifically, both ends of the rotating rod 501 are fixedly connected with a rotating frame 503 , and both sides of the rotating frame 503 are fixedly connected with a scraper 504 for scraping the inner wall of the evaporation box 4 . The rotating frame 503 and the scraper 504 are installed outside the threaded scraper 502 .

[0029] See also Figure 2 , Figure 5The cleaning structure includes a rotating shaft 6, a motor 601 for providing rotational power to the rotating shaft 6 is fixedly connected to the outer wall of the water inlet tank 2, one end of the rotating shaft 6 passes through the water inlet tank 2 and is fixedly connected to the output end of the motor 601, and four groups of fixed pipes 602 are fixedly connected to the outer wall of the rotating shaft 6, and a scraper 603 for scraping impurities from the inner wall of the sedimentation tank 1 is installed on one side of each group of fixed pipes 602;

[0030] Specifically, one side of each set of fixed tubes 602 is fixedly connected to a connecting tube 604, one side of the connecting tube 604 is slidably connected to a telescopic rod 605, and one end of the telescopic rod 605 is fixedly connected to the scraper 603;

[0031] More specifically, a moving groove for the telescopic rod 605 to move is provided inside the connecting tube 604, and a spring 606 for assisting the telescopic rod 605 in telescoping is fixedly installed in the moving groove, one end of the spring 606 is fixedly connected to the connecting tube 604, and the other end is fixedly connected to the telescopic rod 605. Through the cooperation between the telescopic rod 605 and the spring 606, the scraper 603 is more closely attached to the inner wall of the sedimentation tank 1, thereby enhancing the cleaning effect of the device;

[0032] A water outlet pipe 7 is fixedly connected to one side of the sedimentation tank 1 away from the water inlet tank 2 , a water pump 8 for pumping water is fixedly connected to one side of the water outlet pipe 7 , and one side of the water pump 8 is fixedly connected to the delivery pipe 401 .

[0033] See also Figure 1-2 A water inlet pipe 9 is fixedly connected to one side of the water inlet tank 2, a filter plate 10 for preliminarily filtering large particles of impurities in the wastewater is fixedly connected to the inside of the water inlet tank 2, a sewage pipe 11 for discharging sediment is fixedly connected to one side of the collecting box 3, and a valve is fixedly installed on the outer wall of the sewage pipe 11;

[0034] The bottom end of the sedimentation tank 1 is provided with a slope for facilitating the sediment to flow into the collection box 3 , and the bottom end of the sedimentation tank 1 is fixedly connected with a support rod 12 .

[0035] The working principle of the utility model is:

[0036] First, the preliminarily treated wastewater and precipitant are transported to the water inlet tank 2 through the water inlet pipe 9, and the large particles of impurities in the wastewater are filtered out through the filter plate 10, and then enter the sedimentation tank 1 to react with the precipitant, and the precipitate slides from the slope into the collection box 3 on one side, and is discharged from the device through the sewage pipe 11. Then, the motor 601 is started to connect the rotating shaft 6 to drive the fixed pipe 602 to control the rotation of the scraper 603, and the precipitate adhering to the inner wall of the sedimentation tank 1 is scraped off and falls into the collection box 3 together. The separated clean water is sent from the water outlet pipe 7 to the evaporation box 4 through the water pump 8 connected to the delivery pipe 401, and the heater 402 is started to connect the heating pipe 403 The inside of the evaporation box 4 is heated to further separate impurities, and the vaporized clean water is discharged from the recovery pipe 404. At the same time, the driving motor 5 is started to connect the rotating rod 501 to drive the threaded scraper 502 to rotate, so as to stir the clean water inside the evaporation box 4 and push the impurities to the output pipe 405. When the rotating rod 501 rotates, it will also drive the rotating frame 503 connected to the scraper 504 to rotate accordingly to clean the inner wall of the evaporation box 4, effectively separate impurities and salt, and complete the classification between impurities and clean water in the wastewater. Then the electric rod 406 drives the baffle 407 to move backward and discharge from the output pipe 405 and the connecting pipe 604, which is convenient for other subsequent treatments.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A polysilicon wastewater classification treatment and recovery device, comprising a sedimentation tank (1), characterized in that: A water inlet box (2) for preliminary filtration is fixedly connected to one side of the sedimentation tank (1), a collecting box (3) for collecting sediments is fixedly connected to the bottom end of the sedimentation tank (1), a cleaning structure for scraping off residues on the inner wall of the sedimentation tank (1) is fixedly installed inside the sedimentation tank (1), an evaporation box (4) for further filtration is fixedly installed at the top of the sedimentation tank (1), and a stirring structure for assisting evaporation filtration is fixedly installed inside the evaporation box (4).

2. The polysilicon wastewater classification treatment and recovery device according to claim 1 is characterized in that: A delivery pipe (401) for delivering settled water is fixedly connected to one side of the evaporation box (4) away from the water inlet box (2), a heater (402) is fixedly connected to the other side of the evaporation box (4), and a heating pipe (403) for heating the interior of the evaporation box (4) is fixedly connected to one side of the heater (402).

3. The polysilicon wastewater classification treatment and recovery device according to claim 1 is characterized in that: A recovery pipe (404) for recovering steam is fixedly connected to one side of the evaporation box (4) close to the delivery pipe (401), and an output pipe (405) for discharging impurities is installed at the bottom end of the recovery pipe (404).

4. The polysilicon wastewater classification treatment and recovery device according to claim 1 is characterized in that: The stirring structure comprises a driving motor (5) for providing power to the device, the output end of the driving motor (5) is fixedly connected to a rotating rod (501), and the outer wall of the rotating rod (501) is fixedly connected to a threaded scraper (502) for stirring and scraping off adhesions.

5. The polysilicon wastewater classification treatment and recovery device according to claim 1 is characterized in that: The cleaning structure comprises a rotating shaft (6), the outer wall of which is fixedly connected with four groups of fixed tubes (602), and one side of each group of fixed tubes (602) is provided with a scraper (603) for scraping off impurities on the inner wall of the sedimentation tank (1).

6. The polysilicon wastewater classification treatment and recovery device according to claim 1, characterized in that: A water inlet pipe (9) is fixedly connected to one side of the water inlet box (2), a filter plate (10) for preliminarily filtering large particles of impurities in wastewater is fixedly connected inside the water inlet box (2), and a sewage pipe (11) for discharging sediment is fixedly connected to one side of the collection box (3).

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