Rotary cleaning mechanism and stirring tank using same
By installing a rotary cleaning mechanism in the discharge pipe of the mixing tank, the problem of easy scaling at the connections of the mixing tank pipelines in polysilicon production is solved, and the effect of normal material transportation and prolonging the running time of the equipment is achieved.
Patent Information
- Application Number
- CN202421774089.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-25
AI Technical Summary
During the polysilicon production process, scaling is prone to occur at the connections of the material inlet pipelines of the mixing tank, which affects the normal transportation of materials, and the manual blocking process is cumbersome and unsafe.
A rotary cleaning mechanism is designed, including a scraper plate, a drive shaft assembly, a motor and a connecting cylinder. The scraper plate can be extended into the cutting pipe of the mixing tank, and the scraper plate is driven to rotate by the motor to clean the materials in the pipeline and prevent scaling.
Effectively prevent materials from depositing and scaling at the outlet of the mixing tank, ensuring normal material transportation, extending the continuous operation time of the mixing tank, and simplifying the cleaning process and improving safety.
Smart Images
Figure CN222855281U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of anti-blocking stirring tanks, and specifically relates to a rotary cleaning mechanism and a stirring tank using the mechanism, which is particularly suitable for a material mixing device or a material temporary storage device in polysilicon production. Background Art
[0002] In the production of polysilicon, a large number of mixing tanks are used, which can be used as transfer tanks for mixing and temporarily storing materials, or as devices for precipitating impurities in slurry production, etc. Due to the particularity of the materials they contain, scaling is prone to occur at the connection of the material inlet pipeline during use. Since the materials generally contain dangerous gases / liquids such as chlorosilane and hydrogen, there are safety hazards. The traditional solution is to manually clear the blockage after the equipment has been running for a period of time to ensure the normal operation of the equipment.
[0003] The entire manual clearing process is complicated, and the clearing environment is poor. Due to the large use of mixing tanks, the workload of clearing is also very large. Therefore, it is necessary to further optimize the existing equipment to improve the current situation. Utility Model Content
[0004] The utility model aims to solve the problem that in the process of producing polysilicon, the pipeline connection of the material inlet of the stirring tank is prone to scaling, which affects the normal transportation of the material. The utility model proposes a rotating cleaning mechanism and a stirring tank using the mechanism. The rotating cleaning mechanism can better improve the problem and extend the continuous operation time of the stirring tank.
[0005] In order to achieve the above-mentioned invention object, the technical solution of the utility model is as follows:
[0006] A rotary cleaning mechanism comprises a scraper plate, a transmission shaft assembly, a motor and a connecting tube, one end of the connecting tube is provided with a flange, one end of the transmission shaft assembly is detachably connected to the scraper plate, the motor drives the scraper plate to rotate through the transmission shaft assembly, a through hole for passing the transmission shaft assembly is provided in the middle of the flange, a sealing structure is provided between the through hole of the flange and the transmission shaft assembly, the scraper plate can be extended into a discharge pipe of a mixing tank, and the width of the scraper plate matches the inner diameter of the discharge pipe, and the end of the connecting tube away from the flange is connected to a feed pipeline.
[0007] Furthermore, the scraper plate is a rectangular straight plate or a spiral scraper plate.
[0008] Furthermore, a support frame for supporting the motor and part of the transmission shaft assembly is provided at one end of the connecting tube away from the flange.
[0009] Furthermore, the transmission shaft assembly includes a rotating shaft and a connecting sleeve that cooperate with the output shaft of the motor. A connecting shaft is provided at one end of the scraper plate. The transmission shaft assembly and the scraper plate are detachably connected through the rotating shaft, the connecting shaft, the connecting sleeve and the fastener.
[0010] Furthermore, the connecting sleeve of the transmission shaft assembly passes through the through hole, and a sealing structure is provided between the through hole of the flange and the connecting sleeve.
[0011] Furthermore, the sealing structure is a tungsten carbide sealing ring.
[0012] A mixing tank using the aforementioned rotating cleaning mechanism, wherein a feed pipe is provided on the top of the mixing tank, a scraper plate extends into the feed pipe of the mixing tank, a connecting tube of the rotating cleaning mechanism is detachably connected to an installation flange at the feed pipe via a flange via fasteners; a relatively sealed space is formed after the other end of the connecting tube is connected to a feed pipeline.
[0013] Furthermore, the outermost wall of the scraper plate is 4 to 10 mm away from the inner wall of the feed pipe.
[0014] Beneficial effects of the utility model:
[0015] 1. In the utility model, a rotary cleaning mechanism is proposed, which is suitable for a mixing tank or a transfer tank for temporarily storing and mixing silane and other materials in the production of polysilicon. The rotary cleaning mechanism is added to the discharge pipe of the mixing tank and other tanks, which can effectively prevent the material from being deposited and scaled at the discharge port of the tank, and ensure the normal transportation of the material. At the same time, the rotary cleaning mechanism has an ingenious and simple structure, is easy to process and disassemble, and when the structure is added, other structures of the tank can be unchanged, which is convenient for promotion and use.
[0016] 2. In the present invention, the scraper plate is preferably designed as a rectangular straight plate or a spiral scraper plate, which has a simple structure and is easy to process, avoiding affecting the transportation of materials such as silane, and is also convenient for cleaning the scraper plate in the subsequent process.
[0017] 3. In the utility model, a support frame for supporting the motor and part of the transmission shaft assembly is also provided at the end of the connecting tube away from the flange, which can shorten the length of the shaft as much as possible, ensure stable operation of the equipment, and extend the service life of the rotating cleaning mechanism.
[0018] 4. In the utility model, a preferred transmission assembly is proposed, including a rotating shaft and a connecting sleeve that match the output shaft of the motor. A connecting shaft is provided at one end of the scraper plate. The transmission shaft assembly and the scraper plate are detachably connected through the rotating shaft, the connecting shaft, the connecting sleeve and the fasteners, which is convenient for disassembly and assembly of the transmission assembly.
[0019] 5. In the present invention, the connecting sleeve of the transmission shaft assembly passes through the through hole, and a sealing structure is provided between the through hole of the flange and the connecting sleeve to prevent the material from leaking from between the through hole of the flange and the connecting sleeve, causing a safety accident. The outermost wall of the scraper plate and the inner wall of the feed pipe are designed to be 4 to 10 mm apart, which can prevent the material from agglomerating, depositing, and scaling, and does not affect the normal transportation of the material. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of the rotary cleaning mechanism in the utility model.
[0021] Figure 2 It is a structural diagram of the flange.
[0022] Figure 3 It is a structural diagram of the other side of the rotary cleaning mechanism.
[0023] Figure 4 It is a top view of the rotary cleaning mechanism.
[0024] Figure 5 It is a partial structural illustration of the rotary cleaning mechanism installed on the discharge pipe of the mixing tank.
[0025] Among them, 1. scraper plate; 2. transmission shaft assembly; 3. motor; 4. connecting tube; 5. through hole; 6. sealing structure; 7. mixing tank; 8. discharge pipe; 9. support frame; 10. mounting flange; 11. coupling; 12. fastening bolt 2; 13. worm gear; 14. worm; 1.1. connecting shaft; 2.1. rotating shaft 1; 2.2. connecting sleeve; 2.3. fastening bolt 1; 3.1. output shaft; 4.1. flange. DETAILED DESCRIPTION
[0026] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.
[0027] Example 1
[0028] A rotary cleaning mechanism, belonging to the technical field of anti-blocking stirring tank, comprises a scraper plate 1, a transmission shaft assembly 2, a motor 3 and a connecting tube 4, Figures 1 to 5 This embodiment takes a vertically mounted rotary cleaning mechanism as an example to further illustrate this solution. A flange 4.1 is provided at the lower end of the connecting tube 4, and one end of the transmission shaft assembly 2 is detachably connected to the scraper plate 1. The motor 3 drives the scraper plate 1 to rotate through the transmission shaft assembly 2. A through hole 5 for passing the transmission shaft assembly 2 is provided in the middle of the flange 4.1. A sealing structure 6 is provided between the through hole 5 of the flange 4.1 and the transmission shaft assembly 2. The scraper plate 1 can be extended into the feed pipe 8 of the mixing tank 7, and the width of the scraper plate 1 matches the inner diameter of the feed pipe 8. The end of the connecting tube 4 away from the flange 4.1 is connected to the feed pipeline.
[0029] Preferably, the sealing structure 6 is a tungsten carbide sealing ring.
[0030] In this embodiment, the scraper plate 1 of the rotary cleaning mechanism extends into the feed pipe 8 of the mixing tank 7, and the connecting tube 4 of the rotary cleaning mechanism can limit the range of motion of the transmission shaft assembly 2. At the same time, the end of the connecting tube 4 away from the flange 4.1 can be used to fix the motor 3. Of course, the motor 3 and other components can also be adjusted appropriately according to the available space of the equipment installation environment. The end of the connecting tube 4 away from the flange 4.1 is connected to the feed pipeline. In this way, the addition of the rotary cleaning mechanism does not change other structures of the equipment, and only the sealing problem at the rotary cleaning mechanism needs to be paid attention to. The motor 3 drives the scraper plate 1 to rotate slowly to prevent the material from being deposited and scaled at the feed pipe 8 of the mixing tank 7, which affects the normal transportation of the material.
[0031] Example 2
[0032] This embodiment is a further optimization based on the embodiment 1, the difference is that the scraper plate 1 is preferably a rectangular straight plate or a spiral scraper, Figure 1 , Figure 1 It is shown that the scraper plate 1 is a rectangular straight plate structure. Such a scraper plate 1 has a simple structure, is easy to process and install, and can also prevent material deposition and scaling, while not affecting the normal transportation of materials.
[0033] Example 3
[0034] The difference between this embodiment and the embodiment 1-2 is that the end of the connecting tube 4 away from the flange 4.1 is further provided with a support frame 9 for supporting the motor 3 and part of the transmission shaft assembly 2. Figure 1 , 3 The rotary cleaning mechanism is installed in a vertical direction, and a support frame 9 is also provided on the upper part of the connecting tube 4, which can be used to support structures such as the motor 3, so that the transmission shaft can be as short as possible and the transmission is more reliable.
[0035] Example 4
[0036] The difference between this embodiment and embodiments 1-3 is that this embodiment proposes a preferred structure of the transmission shaft assembly 2, referring to Figure 1 , 3 The transmission shaft assembly 2 includes a rotating shaft 2.1 and a connecting sleeve 2.2 that match the output shaft 3.1 of the motor 3. A connecting shaft 1.1 is provided at one end of the scraper plate 1. The transmission shaft assembly 2 is detachably connected to the scraper plate 1 through the rotating shaft 2.1, the connecting shaft 1.1, the connecting sleeve 2.2 and the fasteners. The transmission shaft assembly 2 has an ingenious structure and is easy to install.
[0037] Preferably, the connecting sleeve 2.2 of the transmission shaft assembly 2 passes through the through hole 5, and the through hole 5 of the flange 4.1 and the connecting sleeve 2.2 are directly provided with a sealing structure 6, and the sealing structure 6 is a tungsten carbide sealing ring.
[0038] Example 5
[0039] In order to facilitate the public to understand the present solution, the present embodiment proposes a mixing tank provided with a rotating cleaning mechanism. To further illustrate the present solution, a feeding pipe 8 extending vertically downward is provided on the top of the mixing tank 7 .
[0040] In this scheme, reference Figures 1 to 5 The rotary cleaning mechanism includes a scraper plate 1, a transmission shaft assembly 2, a motor 3 and a connecting tube 4. A flange 4.1 is provided at the lower end of the connecting tube 4. One end of the transmission shaft assembly 2 is detachably connected to the scraper plate 1. The motor 3 drives the scraper plate 1 to rotate through the transmission shaft assembly 2. A through hole 5 for passing the transmission shaft assembly 2 is provided in the middle of the flange 4.1. A sealing structure 6 is provided between the through hole 5 of the flange 4.1 and the transmission shaft assembly 2 to prevent material leakage. Figure 1 After the motor 3 is connected to the reducer and the coupling 11, the scraper plate is driven to rotate at a suitable speed through structures such as the worm gear 13, the worm 14 and the transmission shaft. The motor 3 is an explosion-proof motor.
[0041] In this embodiment, the scraper plate 1 is a rectangular straight plate. A support frame 9 for supporting the motor 3 and part of the transmission shaft assembly 2 is also provided at the end of the connecting tube 4 away from the flange 4.1.
[0042] In this embodiment, the transmission shaft assembly 2 includes a rotating shaft 2.1 and a connecting sleeve 2.2 that match the output shaft 3.1 of the motor 3. One end of the scraper plate 1 is provided with a connecting shaft 1.1. The transmission shaft assembly 2 and the scraper plate 1 are detachably connected through the rotating shaft 2.1, the connecting shaft 1.1, the connecting sleeve 2.2 and the fastening bolt 2.3. The connecting sleeve 2.2 of the transmission shaft assembly 2 passes through the through hole 5. The through hole 5 of the flange 4.1 and the connecting sleeve 2.2 are directly provided with a sealing structure 6. The flange 4.1 is provided with a hole for passing materials. The end of the connecting tube 4 away from the flange 4.1 is connected to the feed pipeline. Figure 2 , 5 .
[0043] In this embodiment, the scraper plate 1 extends into the feed pipe 8 of the mixing tank 7, and the flange 4.1 of the rotary cleaning mechanism is detachably connected to the mounting flange 10 at the feed pipe 8 by fastening bolts 12 to form a relatively sealed space.
[0044] In this embodiment, the outermost wall of the scraper plate 1 is 5 mm away from the inner wall of the discharge pipe 8, so that the width of the scraper plate 1 matches the inner diameter of the discharge pipe 8, ensuring that the motor 3 can smoothly drive the scraper plate 1 to rotate through the transmission shaft assembly 2, thereby avoiding scaling of the material in the discharge pipe 8.
[0045] Take the slurry mixing tank used in the synthetic cold hydrogenation section as an example. Before the rotary cleaning mechanism is added, the staff needs to clear the blockage of the 8 ports of the feed pipe of the slurry mixing tank once every 5 days. Each time the blockage is cleared, 3 staff members are required to handle it, which takes about 12 hours. After the rotary cleaning mechanism is added, the slurry mixing tank can operate continuously for 30 days. And the installation of the rotary cleaning mechanism does not change the other structures of the original slurry mixing tank. It only needs to place the rotary cleaning mechanism at the feed pipe 8, and fix the connecting tube 4 of the rotary cleaning mechanism to the mounting flange 10 at the feed pipe 8 through the flange 4.1; the other end of the connecting tube 4 can be fixed to the feed pipeline.
Claims
1. A rotary cleaning mechanism, characterized in that: The invention comprises a scraper plate (1), a transmission shaft assembly (2), a motor (3) and a connecting tube (4); one end of the connecting tube (4) is provided with a flange (4.1); one end of the transmission shaft assembly (2) is detachably connected to the scraper plate (1); the motor (3) drives the scraper plate (1) to rotate via the transmission shaft assembly (2); a through hole (5) for passing the transmission shaft assembly (2) is provided in the middle of the flange (4.1); a sealing structure (6) is provided between the through hole (5) of the flange (4.1) and the transmission shaft assembly (2); the scraper plate (1) can be extended into a feed pipe (8) of a mixing tank (7); the width of the scraper plate (1) matches the inner diameter of the feed pipe (8); and the end of the connecting tube (4) away from the flange (4.1) is connected to a feed pipeline.
2. The rotary cleaning mechanism according to claim 1, characterized in that: The scraper plate (1) is a rectangular straight plate or a spiral scraper plate.
3. The rotary cleaning mechanism according to claim 1, characterized in that: A support frame (9) for supporting the motor (3) and part of the transmission shaft assembly (2) is also provided at one end of the connecting tube (4) away from the flange (4.1).
4. The rotary cleaning mechanism according to claim 1, characterized in that: The transmission shaft assembly (2) comprises a rotating shaft (2.1) and a connecting sleeve (2.2) that cooperate with the output shaft (3.1) of the motor (3); a connecting shaft (1.1) is provided at one end of the scraper plate (1); and the transmission shaft assembly (2) and the scraper plate (1) are detachably connected via the rotating shaft (2.1), the connecting shaft (1.1), the connecting sleeve (2.2) and a fastener.
5. The rotary cleaning mechanism according to claim 4, characterized in that: The connecting sleeve (2.2) of the transmission shaft assembly (2) passes through the through hole (5), and a sealing structure (6) is provided between the through hole (5) of the flange (4.1) and the connecting sleeve (2.2).
6. The rotary cleaning mechanism according to claim 5, characterized in that: The sealing structure (6) is a tungsten carbide sealing ring.
7. A stirring tank using the rotary cleaning mechanism according to claim 1, characterized in that: A feed pipe (8) is provided at the top of the mixing tank (7), and a scraper plate (1) extends into the feed pipe (8) of the mixing tank (7). The connecting tube (4) of the rotary cleaning mechanism is detachably connected to the mounting flange (10) at the feed pipe (8) via a flange (4.1) via fasteners; the other end of the connecting tube (4) is connected to a feed pipeline to form a relatively sealed space.
8. The stirring tank according to claim 7, characterized in that: The outermost wall of the scraper plate (1) is 4 to 10 mm away from the inner wall of the feed tube (8).