Device for recycling silicon powder in silicon processing wastewater

Abstract

The utility model discloses a device for recycling silicon powder in silicon processing wastewater, and relates to the technical field of silicon processing equipment. The device comprises a filter box and a replacement frame fixedly connected to the outer wall of one side of the filter box, a filter plate is arranged on the upper portion in the filter box, an adjusting assembly is arranged in the replacement frame, and a material pushing assembly is arranged at the bottom end in the filter box. According to the utility model, the upper-layer moving frame and the lower-layer moving frame oppositely move to exchange positions through the adjusting assembly under the magnetic attraction action of the electromagnetic blocks and the corresponding iron sheets, so that wastewater can be continuously filtered, the shutdown time of equipment is shortened, and the wastewater filtering efficiency and the silicon powder recycling efficiency are improved; the motor runs to drive the push plate to move along the bottom of the filter box to push out the silicon powder at the bottom of the filter box, so that the discharging speed of the silicon powder is increased, the silicon powder recovery efficiency is improved, and waste is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of silicon processing equipment, and in particular relates to a device for recovering and utilizing silicon powder from silicon processing wastewater. Background Technology

[0002] In recent years, with the increasing depletion of global fossil energy sources such as oil and coal, solar energy has become increasingly important as a clean new energy source. The global solar energy industry has entered a period of rapid development. At the same time, high-purity crystalline silicon materials are also widely used in the semiconductor industry. With the rapid development of the global solar energy and semiconductor industries, the demand for silicon wafers has increased dramatically. During the silicon wafer processing, the wastewater contains a large amount of silicon powder. Using silicon powder recycling devices to treat wastewater and recover silicon powder reduces silicon powder waste.

[0003] A search revealed that publication number CN206793211U, with an application date of 2017.05.21, discloses a device for recycling silicon powder and wastewater from silicon cutting wastewater. The device includes a raw material tank, a filter, a conveying pump, a silicon powder collection tank, and a dryer. The raw material tank is connected to the filter via a discharge pipe. The filter includes a storage tank. A waste liquid recovery pipe is provided on the right side wall of the separation tank, and a silicon powder collection pipe is provided on the left side wall of the separation tank. The outlet of the silicon powder collection tank is connected to the inlet of the dryer. A water outlet pipe is also provided on the right side wall of the separation tank. The water outlet pipe is located above the waste liquid recovery pipe, and a recycled water storage tank is connected to the outlet of the water outlet pipe.

[0004] However, it still has the following drawbacks in practical use:

[0005] 1. The silicon powder and wastewater recycling device mentioned above requires the equipment to be shut down and the filter screen to be manually pulled out for cleaning and replacement during use. This method increases the time for cleaning and replacing the filter screen components and the downtime, making it impossible to continuously filter and treat the wastewater, which affects the filtration efficiency and silicon powder recovery efficiency.

[0006] 2. In the aforementioned silicon powder and wastewater recycling device for silicon cutting wastewater, the silicon powder is discharged through a silicon powder collection pipe during operation. However, this method results in a slow discharge rate of silicon powder, leading to low silicon powder recovery efficiency. Therefore, we provide a silicon powder recycling device for silicon processing wastewater to solve the aforementioned problems. Utility Model Content

[0007] The purpose of this invention is to provide a silicon powder recovery and utilization device for silicon processing wastewater. By setting an adjustment component, under the magnetic attraction of the electromagnetic block and the corresponding iron plate, the upper and lower moving frames move and exchange positions, enabling continuous filtration of wastewater, reducing equipment downtime, improving wastewater filtration efficiency and silicon powder recovery efficiency. Furthermore, by using a pushing component, the motor drives the push plate to move along the bottom of the filter box, pushing out the silicon powder at the bottom of the filter box, accelerating the silicon powder discharge speed, improving silicon powder recovery efficiency, and reducing waste.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0009] This utility model is a device for recovering and utilizing silicon powder in silicon processing wastewater, including a filter box and a replacement frame fixedly connected to one side of its outer wall. A filter plate is provided inside the upper part of the filter box, an adjustment component is provided inside the replacement frame, and a pusher component is provided at the bottom of the filter box.

[0010] The adjustment assembly includes a fixed frame that is fixedly connected to the inner wall of the filter box and the replacement frame, and a lower moving frame and an upper moving frame that are slidably connected to the lower and upper sides inside the fixed frame.

[0011] The feeding assembly includes a motor mounted on the outer wall of one side of the filter box, and a threaded rod mounted on the output shaft of the motor via a coupling.

[0012] The present invention is further configured such that a liquid storage cavity is provided between the upper surface of the filter plate and the inner wall of the filter box, a raw material box is installed on the top of the filter box, a discharge pipe is provided at the bottom center of the raw material box, and the bottom end of the discharge pipe is located at the top center of the filter box.

[0013] The present invention is further configured such that a conveying mechanism is provided on one side of the filter box, a recycled water storage tank is provided on one side of the outer wall of the filter box, and a collection pipe is provided at the bottom of the other side of the outer wall of the filter box.

[0014] The present invention is further configured such that the other end of the collecting pipe is disposed on one side wall of the silicon powder collecting box, and a dryer is disposed on the other side of the silicon powder collecting box.

[0015] The present invention is further configured such that sliding grooves are provided at the top and bottom of both the front and rear ends of the fixed frame, electromagnetic blocks are embedded at the top and bottom of both sides of the inner wall of the fixed frame, and iron plates are embedded at the center of both sides of the outer wall of the lower moving frame and the upper moving frame, and the iron plates and electromagnetic blocks are attracted by magnetic force.

[0016] The present invention is further configured such that a sliding plate is fixedly provided at the center of the front and rear end faces of both the lower and upper moving frames, and the sliding plate is slidably connected inside the adjacent sliding groove. A filter screen is placed inside the lower and upper moving frames.

[0017] The present invention is further configured such that the other end of the threaded rod passes through the bearing on the outer wall of the filter box and the threaded hole on the first support plate and is connected to the bearing on the inner wall of the filter box, and a push plate is fixedly connected to the bottom of the first support plate.

[0018] The present invention is further configured such that a second support plate is symmetrically arranged at the top rear end of the push plate about the first support plate, and a guide rod is slidably connected in the internal sliding hole of the second support plate, and the two ends of the guide rod are respectively fixed to the inner walls of the two sides of the filter box.

[0019] This utility model has the following beneficial effects:

[0020] This invention, by setting an adjustment component, allows the upper and lower moving frames to move and exchange positions under the magnetic attraction of the electromagnetic block and the corresponding iron plate. This enables continuous filtration of wastewater, reduces equipment downtime, and improves wastewater filtration and silicon powder recovery efficiency. It solves the problem that the aforementioned silicon cutting wastewater recovery and utilization device requires manual cleaning and replacement of the filter screen during equipment shutdown. This method increases the time spent cleaning and replacing the filter screen components and the downtime, making continuous wastewater filtration impossible and affecting filtration and silicon powder recovery efficiency.

[0021] This invention, by setting up a pushing component, uses a motor to drive a pusher plate to move along the bottom of the filter box, pushing out the silicon powder at the bottom of the filter box, thereby accelerating the discharge speed of silicon powder, improving silicon powder recovery efficiency, and reducing waste. It solves the problem that in the above-mentioned silicon cutting wastewater recycling device, silicon powder is discharged through the silicon powder collection pipe, which results in a slow discharge speed of silicon powder and low silicon powder recovery efficiency.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of a device for recovering silicon powder from silicon processing wastewater. Figure 1 .

[0025] Figure 2 A schematic diagram of a device for recovering silicon powder from silicon processing wastewater. Figure 2 .

[0026] Figure 3 This is a cross-sectional view of a device for recycling silicon powder from silicon processing wastewater.

[0027] Figure 4 This is a disassembled diagram of the adjustment components.

[0028] Figure 5 This is a structural diagram of the feeding assembly.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1-Filter box, 101-Replacement frame, 102-Filter plate, 103-Liquid storage chamber, 104-Raw material box, 104a-Discharge pipe, 105-Conveying mechanism, 106-Recycled water storage tank, 107-Collection pipe, 108-Silica powder collection box, 109-Dryer, 2-Adjusting component, 201-Fixed frame, 201a-Slide chute, 202-Electromagnetic block, 203-Lower moving frame, 203a-Slide plate, 204-Upper moving frame, 205-Iron sheet, 206-Filter screen, 3-Pushing component, 301-Motor, 301a-Threaded rod, 302-Guide rod, 303-Push plate, 303a-First support plate, 303b-Second support plate. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0032] Please see Figures 1 to 4 This utility model is a device for recovering and utilizing silicon powder in silicon processing wastewater, including a filter box 1 and a replacement frame 101 fixedly connected to one of its outer walls. A filter plate 102 is provided inside the upper part of the filter box 1, and an adjustment component 2 is provided inside the replacement frame 101. The adjustment component 2 includes a fixed frame 201 fixedly connected to the inner walls of the filter box 1 and the replacement frame 101, and a lower moving frame 203 and an upper moving frame 204 slidably connected to the lower and upper sides inside the fixed frame 201.

[0033] Specifically, a liquid storage chamber 103 is provided between the upper surface of the filter plate 102 and the inner wall of the filter box 1. A raw material box 104 is installed on the top of the filter box 1. A discharge pipe 104a is provided at the bottom center of the raw material box 104, and the bottom end of the discharge pipe 104a is located at the top center of the filter box 1. A conveying mechanism 105 is provided on one side of the filter box 1. A recycled water storage tank 106 is provided on the outer wall of one side of the filter box 1. A collection pipe 107 is provided at the bottom of the outer wall of the other side of the filter box 1. The other end of the collection pipe 107 is located on one side wall of the silicon powder collection box 108. A drying device is provided on the other side of the silicon powder collection box 108. In the machine 109, the upper and lower ends of the front and rear ends of the fixed frame 201 are provided with sliding grooves 201a. Electromagnetic blocks 202 are embedded in the upper and lower ends of the inner walls on both sides of the fixed frame 201. Iron plates 205 are embedded in the center of the outer walls on both sides of the lower moving frame 203 and the upper moving frame 204, and the iron plates 205 and the electromagnetic blocks 202 are magnetically attracted. Slide plates 203a are fixed in the center of the front and rear ends of the lower moving frame 203 and the upper moving frame 204, and the slide plates 203a are slidably connected to the interior of the adjacent sliding grooves 201a. Filter screens 206 are placed inside the lower moving frame 203 and the upper moving frame 204.

[0034] Furthermore, the top opening of the replacement frame 101 can be used to replace the filter screen 206. The filter plate 102, liquid storage chamber 103, conveying mechanism 105, recycled water storage tank 106, dryer 109, etc. are all existing technologies, so they will not be described in detail here. The lower moving frame 203 and the upper moving frame 204 are arranged vertically and horizontally. The two have the same structure and size. The lower moving frame 203 and the upper moving frame 204 can slide and adjust their positions under the action of the electromagnetic block 202 and the iron plate 205. By energizing the electromagnetic block 202, a magnetic attraction is generated between it and the corresponding iron plate 205, so that the lower moving frame 203 and the upper moving frame 204 are subjected to corresponding forces.

[0035] The operation process of this embodiment is as follows: First, the wastewater from silicon processing is introduced into the raw material tank 104. Then, the wastewater is introduced into the filter tank 1 through the discharge pipe 104a and temporarily stored in the storage chamber 103. Under the action of the filter plate 102 and the filter screen 206, the impurities in the wastewater are adsorbed and filtered. After a single filtration, the wastewater can be returned to the raw material tank 104 for further filtration under the action of the conveying mechanism 105 until it is completely filtered. The filtered clear liquid can be recycled into the recycled water storage tank 106. When the filter screen 206 in the lower moving frame 203 needs to be replaced after multiple filtrations, the electromagnetic blocks 202 above and below the inner walls on both sides of the fixed frame 201 are energized, and the corresponding lower moving frame 203 is energized. 3. Adjust the current of the upper moving frame 204 so that the iron plates 205 on the outer walls of the lower moving frame 203 and the upper moving frame 204 are magnetically attracted to each other. Therefore, the lower moving frame 203 and the upper moving frame 204 slide and adjust their positions with the assistance of the sliding plate 203a and the sliding groove 201a. The lower moving frame 203 moves into the replacement frame 101, and the upper moving frame 204 moves into the filter box 1. At this time, the filter screen 206 in the lower moving frame 203 can be removed for cleaning and replacement, while the wastewater can continue to be filtered under the action of the filter screen 206 in the upper moving frame 204, realizing continuous filtration of wastewater, reducing equipment downtime, and improving wastewater filtration efficiency and silicon powder recovery efficiency. Example 2

[0036] Please see Figure 2 and Figure 5 Based on Embodiment 1, the difference from the first embodiment is that a pushing component 3 is provided. The pushing component 3 includes a motor 301 installed on the outer wall of one side of the filter box 1, and a threaded rod 301a installed on the output shaft of the motor 301 through a coupling. This solves the problem that when the silicon powder and wastewater recycling device in the existing silicon cutting wastewater is used, the silicon powder is discharged through the silicon powder collection pipe. However, this method results in a slow discharge speed of silicon powder, which leads to low silicon powder recycling efficiency.

[0037] Specifically, the other end of the threaded rod 301a passes through the bearing on the outer wall of the filter box 1 and the threaded hole on the first support plate 303a and is connected to the bearing on the inner wall of the filter box 1. A push plate 303 is fixedly connected to the bottom of the first support plate 303a. A second support plate 303b is symmetrically arranged at the top rear end of the push plate 303 about the first support plate 303a. A guide rod 302 is slidably connected in the sliding hole inside the second support plate 303b, and the two ends of the guide rod 302 are respectively fixed to the inner walls of the two sides of the filter box 1.

[0038] Furthermore, the motor 301 can drive the threaded rod 301a to rotate, wherein the external thread on the outer wall of the threaded rod 301a is helically engaged with the internal thread in the threaded hole wall of the first support plate 303a, and the second support plate 303b and the guide rod 302 cooperate to guide and limit the push plate 303.

[0039] The operation process of this embodiment is as follows: After the wastewater is filtered, the clear liquid is recovered and the waste liquid is discharged. The valve of the collection pipe 107 is opened, and then the motor 301 is started. The output shaft of the motor 301 rotates and drives the threaded rod 301a to rotate through the coupling. The external thread on the outer wall of the threaded rod 301a is screwed into the internal thread in the threaded hole wall of the first support plate 303a. At the same time, the second support plate 303b is limited by the guide rod 302. Therefore, when the threaded rod 301a rotates, it can drive the push plate 303 to move along the bottom of the filter box 1, thereby pushing out the silicon powder at the bottom of the filter box 1 and entering the silicon powder collection box 108 through the collection pipe 107. Finally, the dryer 109 dries the silicon powder in the silicon powder collection box 108, thereby improving the discharge speed of silicon powder, improving the silicon powder recovery efficiency, and reducing waste.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for recovering and utilizing silicon powder from silicon processing wastewater, comprising a filter box (1) and a replacement frame (101) fixedly connected to one side of its outer wall, wherein a filter plate (102) is provided above the interior of the filter box (1), characterized in that: The replacement frame (101) is provided with an adjustment component (2), and the filter box (1) is provided with a pusher component (3) at the bottom of the interior. The adjustment component (2) includes a fixed frame (201) fixedly connected to the inner wall of the filter box (1) and the replacement frame (101), and a lower moving frame (203) and an upper moving frame (204) slidably connected to the lower and upper sides inside the fixed frame (201). The feeding assembly (3) includes a motor (301) mounted on the outer wall of one side of the filter box (1) and a threaded rod (301a) mounted on the output shaft of the motor (301) via a coupling.

2. The silicon powder recovery and utilization device for silicon processing wastewater according to claim 1, characterized in that, A liquid storage chamber (103) is provided between the upper surface of the filter plate (102) and the inner wall of the filter box (1). A raw material box (104) is installed on the top of the filter box (1). A discharge pipe (104a) is provided at the bottom center of the raw material box (104), and the bottom end of the discharge pipe (104a) is located at the top center of the filter box (1).

3. The silicon powder recovery and utilization device for silicon processing wastewater according to claim 2, characterized in that, A conveying mechanism (105) is provided on one side of the filter box (1), a recycled water storage tank (106) is provided on one side of the outer wall of the filter box (1), and a collection pipe (107) is provided at the bottom of the other side of the outer wall of the filter box (1).

4. The silicon powder recovery and utilization device for silicon processing wastewater according to claim 3, characterized in that, The other end of the collection pipe (107) is located on one side wall of the silicon powder collection box (108), and a dryer (109) is located on the other side of the silicon powder collection box (108).

5. The silicon powder recovery and utilization device for silicon processing wastewater according to claim 1, characterized in that, The fixed frame (201) has sliding grooves (201a) at the top and bottom of both the front and rear ends inside. Electromagnetic blocks (202) are embedded in the top and bottom of both sides of the inner wall of the fixed frame (201). Iron pieces (205) are embedded in the center of both sides of the outer wall of the lower moving frame (203) and the upper moving frame (204), and the iron pieces (205) and the electromagnetic blocks (202) are attracted by magnetic force.

6. The silicon powder recovery and utilization device for silicon processing wastewater according to claim 5, characterized in that, The lower moving frame (203) and the upper moving frame (204) are both fixed with a sliding plate (203a) at the center of their front and rear ends, and the sliding plate (203a) is slidably connected inside the adjacent sliding groove (201a). A filter screen (206) is placed inside the lower moving frame (203) and the upper moving frame (204).

7. The silicon powder recovery and utilization device for silicon processing wastewater according to claim 1, characterized in that, The other end of the threaded rod (301a) passes through the bearing on the outer wall of the filter box (1) and the threaded hole on the first support plate (303a) and is connected to the bearing on the inner wall of the filter box (1). A push plate (303) is fixedly connected to the bottom of the first support plate (303a).

8. A device for recovering and utilizing silicon powder from silicon processing wastewater according to claim 7, characterized in that, The push plate (303) has a second support plate (303b) symmetrically arranged at the top rear end about the first support plate (303a). A guide rod (302) is slidably connected in the sliding hole inside the second support plate (303b), and the two ends of the guide rod (302) are respectively fixed on the inner walls of the two sides of the filter box (1).

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