Polysilicon reduction furnace tail gas ring pipe dredging device

Abstract

The utility model provides a kind of polysilicon reduction furnace tail gas ring pipe dredging device, and the purpose is to solve the technical problem that tail gas pipeline in reduction furnace is easily blocked in prior art.The dredging device includes flexible shaft, driver, connecting assembly, chain assembly and tooth plate. Among them, driver is connected chain assembly by flexible shaft, chain assembly is installed on flexible shaft by connecting assembly, and tooth plate is directly connected with chain assembly.In use process, driver drives flexible shaft to rotate, and flexible shaft drives connecting assembly and chain to rotate, and then the adherent on the inner wall of tail gas pipe is cleaned by chain assembly and tooth plate, and when using, one end of chain assembly provided with flexible shaft is inserted into tail gas pipe, and flexible shaft is driven by driver, so that flexible shaft drives chain assembly to rotate, and then chain assembly is inserted.

Description

Technical Field

[0001] This utility model relates to the field of pipeline dredging technology, specifically to a device for dredging the exhaust gas ring pipe of a polycrystalline silicon reduction furnace. Background Technology

[0002] In the reduction furnace, a mixture of trichlorosilane and hydrogen reacts at high temperatures to produce polycrystalline silicon. The resulting exhaust gas may contain unreacted gases such as hydrogen chloride (HCl) and silicon tetrachloride (SiCl4). These gases need to be treated through an exhaust pipe before being discharged or recovered. However, the exhaust gas contains silicon powder, which can adhere to the exhaust pipe and cause blockages. Blockage of the reduction furnace exhaust pipe can have the following effects:

[0003] 1. Decreased energy efficiency: Blockage in the tail gas pipe will increase the resistance to tail gas flow, thereby affecting the normal operation of the reduction furnace and reducing its energy efficiency.

[0004] 2. Increased operating pressure: Due to the blockage of the tail gas pipe, the operating pressure of the reduction furnace may increase, which will not only increase energy consumption, but may also cause potential mechanical damage to the equipment.

[0005] 3. Safety hazards: The additional pressure caused by blockage may sometimes lead to container explosion or gas leakage, posing safety hazards.

[0006] 4. Reduced production efficiency: Blockage in the exhaust pipe may also lead to production interruption, affecting the continuous operation of the production line and thus reducing production efficiency. Utility Model Content

[0007] To address the technical problem of easy blockage in the exhaust gas pipe of the reduction furnace in the prior art, this utility model provides a device for unblocking the exhaust gas ring pipe of a polycrystalline silicon reduction furnace. One end of the flexible shaft with a chain assembly is inserted into the exhaust gas pipe. The flexible shaft is driven by a driver, which drives the chain assembly to rotate, thereby causing multiple toothed plates on the chain assembly to rotate, thus cleaning the deposits on the inner wall of the exhaust gas pipe.

[0008] The technical solution of this utility model is:

[0009] A device for unblocking the exhaust gas loop of a polysilicon reduction furnace includes:

[0010] A flexible shaft, with a connecting part at one end and connected to a driver at the other end;

[0011] A connecting component is detachably mounted on the connecting portion;

[0012] The chain assembly is arranged in a ring shape around the circumference of the connecting assembly;

[0013] Multiple toothed plates are disposed on the chain assembly.

[0014] Optionally, the connecting part is a rigid shaft;

[0015] The connecting component is tubular and can be detachably fitted onto the shaft.

[0016] Optionally, a connecting plate is provided on the outside of the connecting assembly. The connecting plate is circular, and the chain assembly is disposed on the connecting plate.

[0017] Optionally, the chain assembly includes a plurality of single chains and a ring chain;

[0018] One end of each of the single chains is fixed to the outer periphery of the connecting plate, and the annular chain is connected to the other end of each of the single chains.

[0019] Optionally, all of the toothed plates are located on the outside of the annular chain.

[0020] Optionally, the connecting part is a rigid shaft;

[0021] The connecting assembly includes two connecting tubes, both of which are sleeved on the shaft.

[0022] The chain assembly is located between the two connecting pipes.

[0023] Optionally, the chain assembly includes a plurality of long chains, the two ends of which are respectively connected to two of the connecting tubes;

[0024] All of the toothed plates are mounted on the long chain.

[0025] Optionally, one of the connecting pipes is movably connected to the shaft, and the other connecting pipe is detachably connected to the shaft.

[0026] Optionally, the end of the shaft is detachably connected to the connecting pipe, and another connecting pipe is movably sleeved on the shaft.

[0027] Optionally, the flexible shaft is wrapped with a soft protective tube.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] The chain assembly is installed on the connecting part of the flexible shaft through the connecting component, so that the driver can directly drive the chain assembly to rotate. Under the action of centrifugal force, the chain spins and makes circular motion, which in turn drives the toothed plate to rotate rapidly.

[0030] During operation, the end of the flexible shaft equipped with the chain assembly is inserted into the exhaust pipe. The flexible shaft is driven by the driver, which in turn drives the chain assembly to rotate, thereby causing multiple toothed plates on the chain assembly to rotate and clean the deposits on the inner wall of the exhaust pipe.

[0031] This technical solution can quickly clean up silica powder and other substances adhering to the exhaust pipe, thereby avoiding a series of chain reactions caused by exhaust pipe blockage. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a three-dimensional structural diagram of the present utility model.

[0034] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0035] Figure 3 This is a three-dimensional structural diagram of the second utility model;

[0036] Figure 4 for Figure 3 Enlarged diagram of point B in the middle. Detailed Implementation

[0037] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0038] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0041] Example 1:

[0042] See Figure 1 and Figure 2 This embodiment discloses a device for clearing the exhaust gas ring pipe of a polysilicon reduction furnace, including a flexible shaft 10, a driver (not shown in the figure), a connecting assembly 20, a chain assembly 30, and a toothed plate 40. The driver is connected to the chain assembly 30 via the flexible shaft 10, and the chain assembly 30 is mounted on the flexible shaft 10 via the connecting assembly 20. The toothed plate 40 is directly connected to the chain assembly 30. During use, the driver drives the flexible shaft 10 to rotate, which in turn drives the connecting assembly 20 and the chain to rotate, thereby cleaning the deposits on the inner wall of the exhaust gas pipe through the chain assembly 30 and the toothed plate 40.

[0043] Specifically, the output end of the driver is connected to one end of the flexible shaft 10, and the flexible shaft 10 is driven to rotate through the output end of the driver. The other end of the flexible shaft 10 is a connecting part, and a connecting assembly 20 is detachably installed on the connecting part. A chain assembly 30 is provided on the connecting assembly 20. The chain assembly 30 is distributed in a ring around the circumference of the connecting assembly 20, and multiple toothed plates 40 are provided on the chain assembly 30.

[0044] Generally, a soft protective tube 11 is wrapped around the outside of the flexible shaft 10 to prevent the flexible shaft 10 from contacting the inner wall of the exhaust pipe.

[0045] During operation, the end of the flexible shaft 10 equipped with the connecting component 20 and the chain assembly 30 is first inserted into the exhaust pipe. Then, the driver is started, and the flexible shaft 10 is driven to rotate. In turn, the chain assembly 30 drives all the toothed plates 40 to fly inside the exhaust pipe. The flying of the toothed plates 40 knocks or cuts the deposits on the inner wall of the exhaust pipe, thereby cleaning the deposits on the inner wall of the exhaust pipe.

[0046] In one specific embodiment:

[0047] The connecting part at the end of the flexible shaft 10 is a rigid shaft 12, which can support the connecting assembly 20. The connecting assembly 20 includes a tubular connecting tube 21, which can be sleeved on the shaft 12. The connecting tube 21 has a threaded hole perpendicular to it, and a bolt is installed in the threaded hole to achieve a detachable connection between the connecting assembly 20 and the shaft 12.

[0048] Preferably, the connecting assembly 20 further includes a connecting plate 22, which has an annular structure, and the inner side of the connecting plate 22 is fixedly connected to the middle of the outer wall of the connecting tube 21, and the chain assembly 30 is disposed on the connecting plate 22.

[0049] The technical solution in this embodiment is mainly used when cleaning straight exhaust pipes. By setting the chain assembly 30 on the connecting plate 22, the connecting plate 22 provides a certain support for the chain assembly 30. This increases the contact amount between the chain assembly 30 and the inner wall of the exhaust pipe when cleaning straight exhaust pipes, thereby improving cleaning efficiency and cleaning intensity.

[0050] In another specific embodiment:

[0051] The chain assembly 30 includes multiple single chains 31 and one annular chain 32. One end of each single chain 31 is fixedly disposed on the outer edge of the connecting plate 22, and the other end of each single chain 31 is disposed on the annular chain 32. All single chains 31 are evenly arranged around the circumference of the connecting plate 22.

[0052] Generally, at least three single chains 31 are provided in the circumferential direction of the connecting plate 22, and usually four are provided.

[0053] All the aforementioned toothed plates 40 are mounted on the annular chain 32, and during the rotation of the chain assembly 30, all toothed plates 40 are located on the outer side. This allows them to contact the inner wall of the exhaust pipe and clean it.

[0054] Example 2:

[0055] See Figure 3 and Figure 4 This embodiment discloses a device for clearing the exhaust gas ring pipe of a polysilicon reduction furnace, including a flexible shaft 10, a driver (not shown in the figure), a connecting assembly 20, a chain assembly 30, and a toothed plate 40. The driver is connected to the chain assembly 30 via the flexible shaft 10, and the chain assembly 30 is mounted on the flexible shaft 10 via the connecting assembly 20. The toothed plate 40 is directly connected to the chain assembly 30. During use, the driver drives the flexible shaft 10 to rotate, which in turn drives the connecting assembly 20 and the chain to rotate, thereby cleaning the deposits on the inner wall of the exhaust gas pipe through the chain assembly 30 and the toothed plate 40.

[0056] Specifically, the output end of the driver is connected to one end of the flexible shaft 10, and the flexible shaft 10 is driven to rotate through the output end of the driver. The other end of the flexible shaft 10 is a connecting part, and a connecting assembly 20 is detachably installed on the connecting part. A chain assembly 30 is provided on the connecting assembly 20. The chain assembly 30 is distributed in a ring around the circumference of the connecting assembly 20, and multiple toothed plates 40 are provided on the chain assembly 30.

[0057] Generally, a soft protective tube 11 is wrapped around the outside of the flexible shaft 10 to prevent the flexible shaft 10 from contacting the inner wall of the exhaust pipe.

[0058] During operation, the end of the flexible shaft 10 equipped with the connecting component 20 and the chain assembly 30 is first inserted into the exhaust pipe. Then, the driver is started, and the flexible shaft 10 is driven to rotate. In turn, the chain assembly 30 drives all the toothed plates 40 to fly inside the exhaust pipe. The flying of the toothed plates 40 knocks or cuts the deposits on the inner wall of the exhaust pipe, thereby cleaning the deposits on the inner wall of the exhaust pipe.

[0059] In one specific embodiment:

[0060] The connecting portion at the end of the flexible shaft 10 is a rigid shaft 12, which supports the connecting assembly 20. The connecting assembly 20 includes two tubular connecting tubes 21, one of which is movably sleeved on the shaft 12, and the other connecting tube 21 is detachably connected to the shaft 12. A threaded hole perpendicular to the connecting tube 21 is provided, and a bolt is installed in the threaded hole, thereby achieving a detachable connection between the connecting assembly 20 and the shaft 12.

[0061] The chain assembly 30 described above is disposed between the two connecting pipes 21.

[0062] The technical solution in this embodiment is mainly applied to the exhaust pipe of the bent pipe structure. When in use, since a certain gap can be generated between the two connecting pipes 21 along the length direction of the shaft 12, the two connecting pipes 21 can stretch the chain assembly 30 so that the extension direction of the chain assembly 30 is approximately the same as the length direction of the shaft 12, thereby avoiding the problem of jamming when the shaft 12 enters the exhaust pipe of the bent pipe structure.

[0063] During operation, the shaft 12 rotates, and under the inertia of the chain assembly 30, the movable connecting pipe 21 contacts the fixed connecting pipe 21, causing the chain assembly 30 to fold in half from the middle, thus flying up to clean the deposits on the inner wall of the exhaust pipe.

[0064] Preferably, the chain assembly 30 includes a plurality of long chains 33, with each end of the long chain 33 connected to two connecting tubes 21. All toothed plates 40 are disposed on the long chains 33, and the long chains 33 are aligned with the length direction of the shaft 12 as much as possible.

[0065] Preferably, the end of the shaft 12 is detachably connected to the connecting tube 21, and another connecting tube 21 is movably sleeved on the shaft 12. This design allows the entire chain to always remain connected to the shaft 12, preventing the end of the long chain 33 from going out of control.

[0066] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A device for unblocking the tail gas ring pipe of a polycrystalline silicon reduction furnace, characterized in that, include: A flexible shaft, with a connecting part at one end and connected to a driver at the other end; A connecting component is detachably mounted on the connecting portion; The chain assembly is arranged in a ring shape around the circumference of the connecting assembly; Multiple toothed plates are disposed on the chain assembly.

2. The polysilicon reduction furnace tail gas ring pipe unblocking device according to claim 1, characterized in that: The connecting part is a rigid shaft; The connecting component is tubular and can be detachably fitted onto the shaft.

3. The polycrystalline silicon reduction furnace tail gas ring pipe unblocking device according to claim 2, characterized in that, The connecting assembly has a connecting plate on its exterior. The connecting plate is circular, and the chain assembly is mounted on the connecting plate.

4. The polycrystalline silicon reduction furnace tail gas ring pipe unblocking device according to claim 3, characterized in that, The chain assembly includes multiple single chains and one circular chain; One end of each of the single chains is fixed to the outer periphery of the connecting plate, and the annular chain is connected to the other end of each of the single chains.

5. The polycrystalline silicon reduction furnace tail gas ring pipe unblocking device according to claim 4, characterized in that, All of the toothed plates are located on the outside of the annular chain.

6. The device for unblocking the tail gas ring pipe of a polycrystalline silicon reduction furnace according to claim 1, characterized in that: The connecting part is a rigid shaft; The connecting assembly includes two connecting tubes, both of which are sleeved on the shaft. The chain assembly is located between the two connecting pipes.

7. The polycrystalline silicon reduction furnace tail gas ring pipe unblocking device according to claim 6, characterized in that, The chain assembly includes multiple long chains, with each end of a long chain connected to one of the two connecting tubes. All of the toothed plates are mounted on the long chain.

8. The polycrystalline silicon reduction furnace tail gas ring pipe unblocking device according to claim 7, characterized in that, One of the connecting pipes is movably connected to the shaft, and the other connecting pipe is detachably connected to the shaft.

9. The polycrystalline silicon reduction furnace tail gas ring pipe unblocking device according to claim 8, characterized in that, The end of the shaft is detachably connected to the connecting pipe, and another connecting pipe is movably sleeved on the shaft.

10. The polycrystalline silicon reduction furnace tail gas ring pipe unblocking device according to any one of claims 1-9, characterized in that, The flexible shaft is wrapped with a soft protective tube.

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