Furnace tube on-line cleaning equipment

Abstract

The utility model relates to the field of furnace tubes, in particular to online furnace tube cleaning equipment. Comprising a bottom plate, a support is fixedly connected to the upper surface of the bottom plate, a furnace tube body is installed at the upper end of the support, an auxiliary structure is arranged on the upper surface of the bottom plate and comprises a constant-temperature tank, the constant-temperature tank is installed on the bottom plate, and two sliding rails are fixedly connected to the arc surface of the constant-temperature tank; a sliding block is slidably connected to the inner wall of the sliding rail, a positioning plate is fixedly connected to the upper surface of the sliding block, a threaded rod is rotatably connected to the interior of the sliding rail, and the threaded rod is in threaded connection with the sliding block. The furnace tube online cleaning equipment has the advantages that nitrogen is conveyed into the furnace tube to clean the furnace tube in a mode of combining with water vapor, and then impurities are taken away from the furnace tube in a mode of exhausting through the tail gas tube, so that the furnace tube is cleaned, and the furnace tube can be washed without being dismantled; the productivity is improved; and the pipe cracking risk after the furnace pipe is cooled is reduced.

Description

Technical Field

[0001] This utility model relates to the field of furnace tubes, and in particular to an online furnace tube cleaning device. Background Technology

[0002] Furnace tubes generally refer to tubular devices used in industrial heating, metallurgical, and chemical reactions to contain heat sources and materials. Common furnace tubes are usually made of high-temperature resistant materials, capable of withstanding high temperatures and ensuring effective heating of materials.

[0003] Existing technologies, such as the utility model patent with publication number CN220489706U, disclose a furnace tube device. This patent uses a furnace tube body and a fixing member. The fixing member is located inside the furnace tube body and connected to the inner wall of the furnace tube body. The fixing member has a through-groove extending along the axial direction of the furnace tube body. The through-groove is used to install and fix the gas pipeline. The furnace tube device of this utility model adds a fixing member inside the furnace tube body. The fixing member has a through-groove, which increases the contact surface between the gas pipeline and the fixing member, providing better support for the gas pipeline and ensuring its stability.

[0004] The inventors discovered in daily use that the boron diffusion process is crucial in Topcon solar cells. A good PN junction can greatly improve the cell efficiency. Specifically, under certain flow rate, temperature, pressure and time, boron trichloride reacts with oxygen to generate elemental boron (B) and chlorine. After being pushed forward at high temperature, the elemental boron on the surface obtains the required junction depth and surface concentration. After long-term processing, a large amount of impurities will accumulate on the furnace wall, requiring the furnace tube to be replaced and cleaned regularly. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an online furnace tube cleaning device.

[0006] To solve the above technical problems, this utility model provides an online furnace tube cleaning device, comprising: a base plate, a bracket fixedly connected to the upper surface of the base plate, a furnace tube body mounted on the upper end of the bracket, an auxiliary structure provided on the upper surface of the base plate, the auxiliary structure including a constant temperature tank, the constant temperature tank being mounted on the base plate, two slide rails fixedly connected to the arc surface of the constant temperature tank, a slider slidably connected to the inner wall of the slide rails, a positioning plate fixedly connected to the upper surface of the slider, a screw rotatably connected inside the slide rails, the screw being threadedly connected to the slider, a cylinder placed on the upper surface of the slide rails, a connecting pipe fixedly connected to the output end of the cylinder, the end of the connecting pipe away from the cylinder being fixedly connected to an air inlet pipe, and the end of the air inlet pipe away from the connecting pipe being fixedly connected to the connecting pipe. A connecting pipe is fixedly connected, with one end of the connecting pipe placed inside a constant temperature tank. A cover plate is fixedly connected to the end of the connecting pipe away from the constant temperature tank. A tail gas pipe is fixedly connected to the end of the cover plate away from the furnace tube body. Several limiting blocks are fixedly connected to the arc surface of the cover plate. A rotating shaft is rotatably connected to the inner wall of the limiting blocks. A hook plate is fixedly connected to the arc surface of the rotating shaft. Several auxiliary plates are fixedly connected to the arc surface of the furnace tube body. The auxiliary plates are divided into groups of two. A connecting rod is fixedly connected to the side of each group of auxiliary plates that is close to each other. A locking rod is fixedly connected to the end of each pair of connecting rods that is close to each other. The locking rod engages with the hook plate. A coil spring is sleeved on the arc surface of both ends of the rotating shaft. The two ends of the coil spring are fixedly connected to the limiting block and the hook plate, respectively.

[0007] The aforementioned components achieve the following effects: When cleaning the inside of the furnace tube is required, the cylinder is activated, and high-pressure gas is delivered through the connecting pipe. The connecting pipe delivers gas into the inlet pipe, and then the inlet pipe delivers high-pressure gas into the connecting pipe. The connecting pipe then injects warm water and high-pressure nitrogen from the constant temperature tank into the furnace tube. The high-pressure nitrogen and water mist clean the inside of the furnace tube, and the waste is discharged through the exhaust pipe. When the cylinder needs to be installed and fixed, the screw is rotated to move it. The screw drives the slider to move, and the slider slides on the inner wall of the slide rail. The slider drives the positioning plate to press and fix the cylinder. When sealing the cover plate with the furnace tube is required, the cover plate is pulled to move it. The cover plate drives the limit block and hook plate to move, and then the cover plate is aligned with the furnace tube. Then the hook plate is pulled to move it, and the hook plate drives the coil spring to retract. Then the hook plate is aligned with the clamping rod, and then the hook plate coil spring is released to stretch and cause the hook plate to clamp onto the clamping rod for fixation.

[0008] Preferably, a sealing gasket, which is a rubber gasket, is fixedly connected to the side of the cover plate near the furnace tube body.

[0009] The effect achieved by the above components is that the sealing gasket can increase the friction between the cover plate and the furnace tube, and prevent gas leakage when the cover plate is connected to the furnace tube body.

[0010] Preferably, the arc surface of the lever is fixedly connected to an anti-slip sleeve, and the cross-section of the anti-slip sleeve is annular.

[0011] The effect achieved by the above components is that the anti-slip sleeve can increase the friction between the locking rod and the hook plate, preventing slippage when the locking rod and the hook plate are engaged.

[0012] Preferably, a plurality of handles are fixedly connected to the end of the screw away from the constant temperature tank, and the plurality of handles are evenly distributed on the screw.

[0013] The effect achieved by the above components is that when it is necessary to rotate the screw, the handle can be rotated directly, and the handle drives the screw to rotate, making it more convenient to rotate the screw.

[0014] Preferably, a protective pad is fixedly connected to the side of the positioning plate near the cylinder, and the protective pad has a rectangular cross-section.

[0015] The effect achieved by the above components is that the protective pad can protect the cylinder and prevent the positioning plate from being worn when clamping and fixing the cylinder.

[0016] Preferably, the exhaust pipe, intake pipe, connecting pipe, and connecting tube are all PVC pipes, and the cross-section of the exhaust pipe, intake pipe, connecting pipe, and connecting tube is circular.

[0017] Preferably, the hook plate is a magnetic plate and the lever is an iron rod.

[0018] The effect achieved by the above components is that they can also attract each other when the hook plate and the clamp rod are engaged, thus preventing the hook plate and the clamp rod from separating automatically.

[0019] Compared with related technologies, the online furnace tube cleaning equipment provided by this utility model has the following beneficial effects:

[0020] This invention provides an online furnace tube cleaning device. By setting up an auxiliary structure, it addresses the crucial role of boron diffusion in topcon solar cells, where a good PN junction can significantly improve cell efficiency. Specifically, under certain flow rate, temperature, pressure, and time conditions, boron trichloride reacts with oxygen to generate elemental boron (B) and chlorine. After high-temperature propulsion, the elemental boron on the surface achieves the required junction depth and surface concentration. Over long-term processing, a large amount of impurities accumulate on the furnace tube walls, necessitating periodic replacement and cleaning. This device utilizes nitrogen to carry water vapor into the furnace tube for cleaning, and then removes the impurities through a tailpipe extraction method, thus achieving the cleaning effect. Moreover, it eliminates the need to disassemble the furnace tube for water washing, improving production capacity and reducing the risk of tube cracking after cooling. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of an online furnace tube cleaning device provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shows the auxiliary structure.

[0023] Figure 3 for Figure 2 The enlarged view at point A is shown below;

[0024] Figure 4 for Figure 2 The diagram shows a partial structural schematic.

[0025] The following are the labeling elements in the diagram: 1. Base plate; 2. Support frame; 3. Furnace tube body; 4. Auxiliary structure; 401. Constant temperature tank; 402. Exhaust pipe; 403. Inlet pipe; 404. Connecting pipe; 405. Connecting pipe; 406. Cover plate; 407. Sealing gasket; 408. Limiting block; 409. Coil spring; 410. Rotating shaft; 411. Hook plate; 412. Auxiliary plate; 413. Connecting rod; 414. Anti-slip sleeve; 415. Locking rod; 416. Slide rail; 417. Slider; 418. Positioning plate; 419. Screw; 420. Handle rod; 421. Protective pad; 422. Cylinder. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0028] Please see Figures 1 to 4 The present invention provides an online furnace tube cleaning device, comprising: a base plate 1, a bracket 2 fixedly connected to the upper surface of the base plate 1, a furnace tube body 3 mounted on the upper end of the bracket 2, and an auxiliary structure 4 provided on the upper surface of the base plate 1.

[0029] In the embodiments of this utility model, please refer to Figures 1 to 4The auxiliary structure 4 includes a constant temperature tank 401, which is mounted on a base plate 1. Two slide rails 416 are fixedly connected to the arc surface of the constant temperature tank 401. A slider 417 is slidably connected to the inner wall of the slide rails 416. A positioning plate 418 is fixedly connected to the upper surface of the slider 417. A screw 419 is rotatably connected inside the slide rails 416 and threadedly connected to the slider 417. A cylinder 422 is placed on the upper surface of the slide rails 416. A connecting pipe 405 is fixedly connected to the output end of the cylinder 422. An air inlet pipe 403 is fixedly connected to the end of the connecting pipe 405 away from the cylinder 422. A connecting pipe 404 is fixedly connected to the end of the air inlet pipe 403 away from the connecting pipe 405. One end of the connecting pipe 404 is located inside the constant temperature tank 401. The end of the connecting pipe 404 away from the constant temperature tank 401... A cover plate 406 is fixedly connected to the end of the furnace tube body 3. A tail gas pipe 402 is fixedly connected to the end of the cover plate 406 away from the furnace tube body 3. Several limiting blocks 408 are fixedly connected to the arc surface of the cover plate 406. A rotating shaft 410 is rotatably connected to the inner wall of the limiting block 408. A hook plate 411 is fixedly connected to the arc surface of the rotating shaft 410. Several auxiliary plates 412 are fixedly connected to the arc surface of the furnace tube body 3. The auxiliary plates 412 are divided into two groups. A connecting rod 413 is fixedly connected to the side of each auxiliary plate 412 that is close to each other. A locking rod 415 is fixedly connected to the end of the two connecting rods 413 that is close to each other. The locking rod 415 is engaged with the hook plate 411. A coil spring 409 is sleeved on the arc surface of both ends of the rotating shaft 410. The two ends of the coil spring 409 are fixedly connected to the limiting block 408 and the hook plate 411, respectively. When cleaning the inside of the furnace tube is required, cylinder 422 is activated. Cylinder 422 delivers high-pressure gas through connecting pipe 405, which in turn delivers gas to inlet pipe 403. Inlet pipe 403 then delivers high-pressure gas to connecting pipe 404, which in turn injects warm water and high-pressure nitrogen from thermostatic tank 401 into the furnace tube. The high-pressure nitrogen and water mist clean the inside of the furnace tube. Waste is then discharged through exhaust pipe 402. When cylinder 422 needs to be installed and fixed, screw 419 is rotated to move it. Screw 419 moves slider 417, which moves along slide rail 416. The inner wall of the cover plate 406 is slidable. The slider 417 drives the positioning plate 418 to press and fix the cylinder 422. When it is necessary to seal the cover plate 406 with the furnace tube, the cover plate 406 is pulled to move. The cover plate 406 drives the limiting block 408 and the hook plate 411 to move. Then the cover plate 406 is aligned with the furnace tube. Then the hook plate 411 is pulled to move. The hook plate 411 drives the coil spring 409 to retract. Then the hook plate 411 is aligned with the locking rod 415. Then the hook plate 411 is released and the coil spring 409 is stretched to drive the hook plate 411 to lock onto the locking rod 415 for fixation. A sealing gasket 407 is fixedly connected to the side of the cover plate 406 near the furnace tube body 3. The sealing gasket 407 is a rubber gasket.The sealing gasket 407 increases the friction between the cover plate 406 and the furnace tube, preventing gas leakage when the cover plate 406 is connected to the furnace tube body 3. An anti-slip sleeve 414 is fixedly connected to the arc surface of the locking rod 415; the anti-slip sleeve 414 has a circular cross-section. The anti-slip sleeve 414 increases the friction between the locking rod 415 and the hook plate 411, preventing slippage when the locking rod 415 and hook plate 411 are engaged. Several levers 420 are fixedly connected to the end of the screw 419 away from the constant temperature tank 401, and these levers 420 are evenly distributed on the screw 419. When it is necessary to rotate the screw 419, the levers 420 can be directly rotated, causing the screw 419 to rotate. The levers 420 make rotating the screw 419 more convenient. A protective pad 421 is fixedly connected to the side of the positioning plate 418 near the cylinder 422; the protective pad 421 has a rectangular cross-section. The protective pad 421 protects the cylinder 422, preventing wear from the positioning plate 418 when clamping and fixing the cylinder 422. The exhaust pipe 402, intake pipe 403, connecting pipe 404, and connecting pipe 405 are all PVC pipes with circular cross-sections. The hook plate 411 is a magnetic plate, and the clamping rod 415 is an iron rod. When the hook plate 411 and the clamping rod 415 are engaged, they can also attract each other, preventing automatic separation.

[0030] The working principle of the online furnace tube cleaning device provided by this utility model is as follows: When it is necessary to clean the inside of the furnace tube, the cylinder 422 is started to operate. The cylinder 422 delivers high-pressure gas through the connecting pipe 405. The connecting pipe 405 delivers gas into the air inlet pipe 403, and then the air inlet pipe 403 delivers high-pressure gas into the connecting pipe 404. The connecting pipe 404 draws in warm water and high-pressure nitrogen from the constant temperature tank 401 and sprays it into the inside of the furnace tube. Then, the high-pressure nitrogen and water mist clean the inside of the furnace tube. The waste is then discharged from the furnace tube through the exhaust pipe 402. When it is necessary to install and fix the cylinder 422, the screw 419 is rotated to move it. The screw 419 drives the slider 417 to move. The slider 417 slides on the inner wall of the slide rail 416. The slider 417 drives the positioning plate 418 to press and fix the cylinder 422. When it is necessary to seal the cover plate 406 to the furnace tube, the cover plate 406 is pulled to move it. The cover plate 406 drives the limiting block 408 and the hook plate 411 to move. Then the cover plate 406... Align 06 with the furnace tube, then pull the hook plate 411 to move it. The hook plate 411 drives the coil spring 409 to retract, then align the hook plate 411 with the locking rod 415, then release the hook plate 411 and the coil spring 409 to stretch it, causing the hook plate 411 to lock onto the locking rod 415 for fixation. The sealing gasket 407 can increase the friction between the cover plate 406 and the furnace tube, preventing gas leakage when the cover plate 406 is connected to the furnace tube body 3. The anti-slip sleeve 414 can increase the friction between the locking rod 415 and the hook plate 411, preventing... When the locking lever 415 and the hook plate 411 are engaged, slippage occurs. When it is necessary to rotate the screw 419, the handle 420 can be rotated directly. The handle 420 drives the screw 419 to rotate, making it easier to rotate the screw 419. The protective pad 421 can protect the cylinder 422 and prevent wear when the positioning plate 418 clamps and fixes the cylinder 422. When the hook plate 411 and the locking lever 415 are engaged, they can also attract each other to prevent the hook plate 411 and the locking lever 415 from automatically separating.

[0031] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An online furnace tube cleaning device, characterized in that, include: A base plate (1) is provided, and a bracket (2) is fixedly connected to the upper surface of the base plate (1). A furnace tube body (3) is mounted on the upper end of the bracket (2). An auxiliary structure (4) is provided on the upper surface of the base plate (1). The auxiliary structure (4) includes a constant temperature tank (401). The constant temperature tank (401) is mounted on the base plate (1). Two slide rails (416) are fixedly connected to the arc surface of the constant temperature tank (401). A slider (417) is slidably connected to the inner wall of the slide rail (416). A positioning device is fixedly connected to the upper surface of the slider (417). Plate (418), the slide rail (416) is rotatably connected to a screw (419), the screw (419) is threadedly connected to a slider (417), a cylinder (422) is placed on the upper surface of the slide rail (416), the output end of the cylinder (422) is fixedly connected to a connecting pipe (405), the end of the connecting pipe (405) away from the cylinder (422) is fixedly connected to an air inlet pipe (403), the end of the air inlet pipe (403) away from the connecting pipe (405) is fixedly connected to a connecting pipe (404), the connecting pipe (404) One end of the connecting pipe (404) is set inside the constant temperature tank (401). The end of the connecting pipe (404) away from the constant temperature tank (401) is fixedly connected to a cover plate (406). The end of the cover plate (406) away from the furnace tube body (3) is fixedly connected to a tail gas pipe (402). Several limiting blocks (408) are fixedly connected to the arc surface of the cover plate (406). A rotating shaft (410) is rotatably connected to the inner wall of the limiting block (408). A hook plate (411) is fixedly connected to the arc surface of the rotating shaft (410). The arc surface of the furnace tube body (3) A number of auxiliary plates (412) are fixedly connected. The auxiliary plates (412) are divided into two groups of two. A connecting rod (413) is fixedly connected to the side of each group of auxiliary plates (412) that is close to each other. A locking rod (415) is fixedly connected to the end of the two connecting rods (413) that is close to each other. The locking rod (415) is engaged with the hook plate (411). The arc surfaces at both ends of the rotating shaft (410) are fitted with coil springs (409). The two ends of the coil springs (409) are fixedly connected to the limiting block (408) and the hook plate (411) respectively.

2. The furnace tube online cleaning equipment according to claim 1, characterized in that, A sealing gasket (407) is fixedly connected to the side of the cover plate (406) near the furnace tube body (3), and the sealing gasket (407) is a rubber gasket.

3. The online furnace tube cleaning equipment according to claim 1, characterized in that, The arc surface of the lever (415) is fixedly connected to an anti-slip sleeve (414), and the cross-section of the anti-slip sleeve (414) is circular.

4. The online furnace tube cleaning equipment according to claim 1, characterized in that, A number of handles (420) are fixedly connected to the end of the screw (419) away from the constant temperature tank (401), and the handles (420) are evenly distributed on the screw (419).

5. The furnace tube online cleaning equipment according to claim 1, characterized in that, A protective pad (421) is fixedly connected to the side of the positioning plate (418) near the cylinder (422), and the protective pad (421) has a rectangular cross-section.

6. The online furnace tube cleaning equipment according to claim 1, characterized in that, The exhaust pipe (402), intake pipe (403), connecting pipe (404) and connecting pipe (405) are all PVC pipes, and the cross-section of the exhaust pipe (402), intake pipe (403), connecting pipe (404) and connecting pipe (405) is circular.

7. The online furnace tube cleaning equipment according to claim 1, characterized in that, The hook plate (411) is a magnetic plate, and the lever (415) is an iron rod.

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