Slurry silicon powder recovery device for polycrystalline silicon production

Abstract

The utility model relates to the technical field of polycrystalline silicon, and discloses a slag slurry silicon powder recovery device for polycrystalline silicon production, which comprises a bottom plate, the closed part is arranged at the top of the bottom plate; the tiling part is arranged in the closed part; and the bottom legs are fixedly connected to the bottom of the bottom plate. The electric valve is opened by driving the control panel, so that materials are fed downwards from the feeding hopper, fall to the top of the grid plate and then are flatly laid under the action of the flatly-laid part, water in the water tank is distributed to the water spraying box to be sprayed out under the action of the conveying pipe, and therefore the purpose that the materials are hydrolyzed into the water tank is achieved. Under the action of the buoyancy frame, the sliding frame is in contact with the horizontal plane in the pool, and the sliding frame slides in the fixed frame, so that the purpose that the sliding frame ascends and descends along the height of the water level is achieved, the whole device is closed, and materials are prevented from flying and polluting the external environment.

Description

Technical Field

[0001] The utility model relates to the technical field of polysilicon, in particular to a slurry silicon powder recovery device for polysilicon production. Background Art

[0002] Polycrystalline silicon is a form of elemental silicon. When molten elemental silicon solidifies under supercooling conditions, silicon atoms are arranged in the form of a diamond lattice to form many crystal nuclei. If these crystal nuclei grow into grains with different crystal plane orientations, these grains will combine and crystallize into polycrystalline silicon.

[0003] In the polysilicon production process, the silicon powder produced by the reduction device needs to be hydrolyzed in a water pool. Currently, the hydrolysis is carried out in the open air. Because the silicon powder is in powder form and light in weight, a large amount of dust will be blown into the air by the wind during the hydrolysis process, posing a threat to human health and the ecological environment. Utility Model Content

[0004] The utility model aims to provide a slurry silicon powder recovery device for polysilicon production to achieve the above-mentioned purpose.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slurry silicon powder recovery device for polysilicon production, comprising: a bottom plate; a closed portion arranged on the top of the bottom plate; a flat portion arranged inside the closed portion; a bottom leg, fixedly connected to the bottom of the bottom plate; wherein the closed portion comprises: a water pool, fixedly connected to the top of the bottom plate; a support column, fixedly connected to the top of the water pool, and the support columns are symmetrically arranged.

[0006] Preferably, the top of the support column is fixedly connected to a connecting frame, a grid plate is installed inside the connecting frame, the bottom of the connecting frame is fixedly connected to a fixed frame, a sliding opening is opened at the bottom of the fixed frame, the inside of the sliding opening is slidably connected to a sliding frame, the bottom of the sliding frame is fixedly connected to a buoyancy frame, and the top of the connecting frame is fixedly connected to a fixed box. The design of the buoyancy frame contacting with the internal horizontal plane of the pool and the sliding frame sliding inside the fixed frame to realize the function of closing the device effectively prevents materials from flying and polluting the external environment.

[0007] Preferably, a door panel is hingedly connected to one side of the fixed box, a handle is fixedly connected to one side of the door panel, a feed port is provided at the top of the fixed box, an observation port is provided at one side of the fixed box, an adapter port is provided at one side of the fixed box, and an annular groove is provided on the inner wall of the fixed box.

[0008] Preferably, a control panel is fixedly connected to the top of the fixed box, a water tank is fixedly connected to the top of the fixed box, a feed hopper is fixedly connected to the top of the fixed box, and the feed hopper is communicated with a feed port.

[0009] Preferably, an electric valve is rotatably connected inside the feed port, an observation window is installed inside the observation port, a water spray box is fixedly connected to the top of the inner wall of the fixed box, a transmission pipe is connected to the top of the water spray box, and one end of the transmission pipe is fixedly connected to the bottom of the water tank.

[0010] Preferably, the paving part includes: a connecting plate fixedly connected to one side of the fixing box, and the connecting plate is symmetrically arranged; and a motor fixedly connected to one side of the connecting plate.

[0011] Preferably, one side of the connecting plate is rotatably connected to a sprocket, and the sprocket is symmetrically arranged. One side of the sprocket is fixedly connected to the output end of the motor. The outer wall of the sprocket is rotatably connected to a chain, and the chain is adapted to the adapter port. One side of the connecting plate is fixedly connected to an adapter block, and the adapter block is adapted to the adapter port and the sprocket. The design of the connecting plate and the adapter block effectively blocks the gap between the sprocket, chain and adapter port, thereby preventing materials from entering these areas and affecting the stability of the scraper.

[0012] Preferably, a connecting column is fixedly connected between the chains, a scraper is rotatably connected to the outer wall of the connecting column, a sliding column is fixedly connected to one side of the scraper, the sliding columns are symmetrically arranged, the sliding columns are slidably connected to the inside of the annular groove, and the sliding columns are slidably connected to the inside of the annular groove. This design not only limits the rollover of the scraper, but also ensures the smooth operation of the scraper during the scraping process.

[0013] The utility model provides a slurry silicon powder recovery device for polysilicon production, which has the following beneficial effects:

[0014] (1) The utility model drives the control panel to open the electric valve, thereby feeding materials from the feed hopper downward and causing the materials to fall to the top of the grid plate. Subsequently, the materials are spread flat under the action of the flattening part. Under the action of the transmission pipe, the water inside the water tank is diverted to the water spray box for spraying, thereby achieving the purpose of hydrolyzing the materials into the water pool. Under the action of the buoyancy frame, the buoyancy frame contacts the horizontal surface inside the water pool. Since the sliding frame slides inside the fixed frame, the sliding frame is raised and lowered along the water level line, thereby closing the entire device to prevent the materials from flying and polluting the external environment.

[0015] (2) The utility model blocks the gap between the sprocket, chain and adapter under the action of the connecting plate and the adapter block, and then drives the motor to drive the sprocket to rotate the chain, thereby driving the connecting column to slide along the trajectory of the chain. Since the sliding column is slidably connected inside the annular groove, the scraper will not tip over. Under the action of the chain, the scraper can scrape the material in two layers and continuously level it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main schematic diagram of the structure of the utility model;

[0017] Figure 2 This is the front view of the utility model;

[0018] Figure 3 This is a view of the closed part of the utility model;

[0019] Figure 4 This is a detailed view of the closed part of the utility model;

[0020] Figure 5 This is a view of the paved part of the utility model.

[0021] In the figure: 1 bottom plate, 2 closed part, 3 flat part, 4 bottom leg;

[0022] 211 water tank, 212 support column, 213 connection frame, 214 grid plate, 215 fixed frame, 216 sliding frame, 217 buoyancy frame, 218 fixed box, 219 door panel, 220 handle, 221 control panel, 222 water tank, 223 feed hopper, 224 observation window, 225 electric valve, 226 water spray box;

[0023] 311 connecting plate, 312 adapter block, 313 sprocket, 314 chain, 315 motor, 316 connecting column, 317 scraper, 318 sliding column. DETAILED DESCRIPTION

[0024] 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.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Embodiment 1:

[0027] The preferred embodiment of the slurry silicon powder recovery device for polysilicon production provided by the utility model is as follows Figure 1-5As shown: a slurry silicon powder recovery device for polysilicon production, including: a bottom plate 1; a closed portion 2 arranged on the top of the bottom plate 1; a flat portion 3 arranged inside the closed portion 2; a bottom leg 4, fixedly connected to the bottom of the bottom plate 1; wherein the closed portion 2 includes: a water pool 211, fixedly connected to the top of the bottom plate 1; support columns 212, fixedly connected to the top of the water pool 211, and the support columns 212 are symmetrically arranged.

[0028] The top of the support column 212 is fixedly connected to a connecting frame 213, a grid plate 214 is installed inside the connecting frame 213, the bottom of the connecting frame 213 is fixedly connected to a fixing frame 215, a sliding opening 1 is provided at the bottom of the fixing frame 215, a sliding frame 216 is slidably connected inside the sliding opening 1, a buoyancy frame 217 is fixedly connected to the bottom of the sliding frame 216, and the top of the connecting frame 213 is fixedly connected to a fixing box 218.

[0029] A door panel 219 is hingedly connected to one side of the fixed box 218, a handle 220 is fixedly connected to one side of the door panel 219, a feed port is provided at the top of the fixed box 218, an observation port is provided at one side of the fixed box 218, an adapter port is provided at one side of the fixed box 218, and an annular groove is provided on the inner wall of the fixed box 218.

[0030] A control panel 221 is fixedly connected to the top of the fixed box 218, a water tank 222 is fixedly connected to the top of the fixed box 218, a feed hopper 223 is fixedly connected to the top of the fixed box 218, and the feed hopper 223 is communicated with the feed port.

[0031] An electric valve 225 is rotatably connected inside the feed port, an observation window 224 is installed inside the observation port, a water spray box 226 is fixedly connected to the top of the inner wall of the fixed box 218, and a transmission pipe is connected to the top of the water spray box 226, one end of which is fixedly connected to the bottom of the water tank 222.

[0032] Furthermore, this embodiment drives the control panel 221 to open the electric valve 225, thereby feeding the material downward from the feed hopper 223 and causing the material to fall onto the top of the grid plate 214. Subsequently, the material is spread flat under the action of the spreading part 3. Under the action of the transmission pipe, the water inside the water tank 222 is diverted to the water spray box 226 for spraying, thereby achieving the purpose of hydrolyzing the material into the water pool 211. Under the action of the buoyancy frame 217, it is brought into contact with the horizontal surface inside the water pool 211. Since the sliding frame 216 slides inside the fixed frame 215, the sliding frame 216 is raised and lowered along the water level line, thereby closing the entire device to prevent the material from flying and polluting the external environment.

[0033] Embodiment 2:

[0034] Based on the first embodiment, the preferred embodiment of the slurry silicon powder recovery device for polysilicon production provided by the utility model is as follows: Figure 1-5 As shown: the tiling part 3 includes: a connecting plate 311, which is fixedly connected to one side of the fixing box 218, and the connecting plate 311 is symmetrically arranged; a motor 315, which is fixedly connected to one side of the connecting plate 311.

[0035] One side of the connecting plate 311 is rotatably connected to a sprocket 313, which is symmetrically arranged. One side of the sprocket 313 is fixedly connected to the output end of the motor 315. The outer wall of the sprocket 313 is rotatably connected to a chain 314, which is adapted to the adapter port. One side of the connecting plate 311 is fixedly connected to an adapter block 312, which is adapted to the adapter port and the sprocket 313.

[0036] A connecting column 316 is fixedly connected between the chains 314, and a scraper 317 is rotatably connected to the outer wall of the connecting column 316. A sliding column 318 is fixedly connected to one side of the scraper 317. The sliding columns 318 are symmetrically arranged and slidably connected inside the annular groove.

[0037] Furthermore, this embodiment blocks the gap between the sprocket 313, the chain 314 and the adapter port under the action of the connecting plate 311 and the adapter block 312, and then drives the motor 315, so that the sprocket 313 drives the chain 314 to rotate, thereby driving the connecting column 316 to slide along the trajectory of the chain 314. Since the sliding column 318 is slidably connected to the inside of the annular groove, the scraper 317 will not tip over, and under the action of the chain 314, the scraper 317 can perform double-layer and continuous scraping on the material.

[0038] When in use, first, the control panel 221 is driven to open the electric valve 225, so that the material is fed downward from the feed hopper 223 and falls on the top of the grid plate 214. Then, the material is spread flat under the action of the flattening part 3. Under the action of the transmission pipe, the water inside the water tank 222 is diverted to the water spray box 226 for spraying, so as to achieve the purpose of hydrolyzing the material into the water pool 211. Under the action of the buoyancy frame 217, it contacts the horizontal surface inside the water pool 211. Since the sliding frame 216 slides inside the fixed frame 215, the sliding frame 216 is lifted and lowered along the water level line. The purpose of lowering is to close the entire device and prevent materials from flying and polluting the external environment; secondly, under the action of the connecting plate 311 and the adapter block 312, the gaps generated by the sprocket 313, the chain 314 and the adapter are blocked, and then the motor 315 is driven to make the sprocket 313 drive the chain 314 to rotate, thereby driving the connecting column 316 to slide along the trajectory of the chain 314. Since the sliding column 318 is slidably connected to the inside of the annular groove, the scraper 317 will not tip over, and under the action of the chain 314, the scraper 317 can perform double-layer and continuous scraping on the material.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A slurry silicon powder recovery device for polysilicon production, characterized in that: It comprises: a bottom plate (1); A closed portion (2) disposed on the top of the bottom plate (1); A flattened portion (3) disposed inside the closed portion (2); A bottom leg (4) fixedly connected to the bottom of the bottom plate (1); Wherein, the closed part (2) comprises: A water pool (211) is fixedly connected to the top of the bottom plate (1); The support columns (212) are fixedly connected to the top of the pool (211), and the support columns (212) are symmetrically arranged.

2. The slurry silicon powder recovery device for polysilicon production according to claim 1, characterized in that: The top of the support column (212) is fixedly connected to a connection frame (213), a grid plate (214) is installed inside the connection frame (213), the bottom of the connection frame (213) is fixedly connected to a fixing frame (215), a sliding opening 1 is provided at the bottom of the fixing frame (215), a sliding frame (216) is slidably connected inside the sliding opening 1, the bottom of the sliding frame (216) is fixedly connected to a buoyancy frame (217), and the top of the connection frame (213) is fixedly connected to a fixing box (218).

3. The slurry silicon powder recovery device for polysilicon production according to claim 2, characterized in that: A door panel (219) is hingedly connected to one side of the fixed box (218), a handle (220) is fixedly connected to one side of the door panel (219), a feed port is provided at the top of the fixed box (218), an observation port is provided at one side of the fixed box (218), an adapter port is provided at one side of the fixed box (218), and an annular groove is provided on the inner wall of the fixed box (218).

4. The slurry silicon powder recovery device for polysilicon production according to claim 3, characterized in that: A control panel (221) is fixedly connected to the top of the fixed box (218), a water tank (222) is fixedly connected to the top of the fixed box (218), and a feed hopper (223) is fixedly connected to the top of the fixed box (218), wherein the feed hopper (223) is in communication with a feed port.

5. The slurry silicon powder recovery device for polysilicon production according to claim 3, characterized in that: An electric valve (225) is rotatably connected inside the feed port, an observation window (224) is installed inside the observation port, a water spray box (226) is fixedly connected to the top of the inner wall of the fixed box (218), and a transmission pipe is provided at the top of the water spray box (226), one end of which is fixedly connected to the bottom of the water tank (222).

6. The slurry silicon powder recovery device for polysilicon production according to claim 1, characterized in that: The paving part (3) comprises: A connecting plate (311) is fixedly connected to one side of the fixing box (218), and the connecting plate (311) is symmetrically arranged; The motor (315) is fixedly connected to one side of the connecting plate (311).

7. The slurry silicon powder recovery device for polysilicon production according to claim 6, characterized in that: One side of the connection plate (311) is rotatably connected to a sprocket (313), the sprockets (313) are symmetrically arranged, one side of the sprocket (313) is fixedly connected to an output end of a motor (315), an outer wall of the sprocket (313) is rotatably connected to a chain (314), the chain (314) is adapted to an adapter port, and one side of the connection plate (311) is fixedly connected to an adapter block (312), the adapter block (312) is adapted to the adapter port and the sprocket (313).

8. The slurry silicon powder recovery device for polysilicon production according to claim 7, characterized in that: A connecting column (316) is fixedly connected between the chains (314); a scraper (317) is rotatably connected to the outer wall of the connecting column (316); a sliding column (318) is fixedly connected to one side of the scraper (317); the sliding columns (318) are symmetrically arranged and slidably connected to the inside of the annular groove.

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