Automatic carbon scraping device for acetylene furnace combustion chamber

Abstract

The present invention relates to the technical field of acetylene furnace combustion chamber carbon scraping devices, and is an automatic carbon scraping device for an acetylene furnace combustion chamber, comprising an acetylene furnace, a scraper, a joystick, a side ball seat, a lower ball seat, and a power mechanism. The scraper is provided in the acetylene furnace, and the acetylene furnace comprises a combustion chamber and a cooling chamber. The combustion chamber is mounted on the upper end of the cooling chamber, a crossbeam is mounted on the inner bottom of the cooling chamber, a lower ball seat is mounted on the middle portion of the upper side of the crossbeam, a first ball head is mounted in the lower ball seat, the lower end of the scraper passes through the first ball head, and a through hole is provided in the middle portion of the cooling chamber that passes through the inside and outside. The present invention has a reasonable and compact structure and is easy to use. The power mechanism can drive the joystick to move along a predetermined trajectory, and the joystick pushes the scraper to move, so that the scraper moves along the fixed trajectory and contacts each inner side surface of the combustion chamber, thereby scraping off coke accumulated during the oxidation reaction, reducing the labor intensity and low efficiency of manual scraping by operators.

Description

Technical Field

[0001] The invention relates to the technical field of carbon scraping devices for combustion chambers of acetylene furnaces, in particular to an automatic carbon scraping device for combustion chambers of acetylene furnaces. Background Art

[0002] In the natural gas partial oxidation process to produce acetylene, the raw natural gas and oxygen are heated to 500-650°C, mixed thoroughly, and then fed into the acetylene furnace combustion chamber for a partial oxidation reaction. This reaction generates some carbon black, which is separated by scrubbing and electrostatic precipitators while adhering to the combustion chamber's inner walls, forming coke. Over time, this accumulated coke reduces the reaction chamber's volume, altering the gas flow rate and compromising the cracking reaction. Furthermore, the accumulated coke can be suddenly dislodged by the airflow, altering the gas flow and causing the product gas to be vented. Therefore, regular removal of coke from the combustion chamber walls is essential.

[0003] At present, most acetylene furnaces are operated manually, which requires high technical skills of operators, has high labor intensity and low economic benefits. Summary of the Invention

[0004] The present invention provides an automatic carbon scraping device for the combustion chamber of an acetylene furnace, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problems of coke accumulation in the combustion chamber of the existing acetylene furnace affecting production and manual coke removal being time-consuming and labor-intensive, with low construction efficiency and potential safety hazards.

[0005] The technical solution of the present invention is achieved through the following measures: an automatic carbon scraping device for an acetylene furnace combustion chamber, comprising an acetylene furnace, a scraper, a joystick, a side ball seat, a lower ball seat and a power mechanism. A scraper is provided in the acetylene furnace, the acetylene furnace comprises a combustion chamber and a cooling chamber, a combustion chamber is installed at the upper end of the cooling chamber, a crossbeam is installed at the bottom inner side of the cooling chamber, a lower ball seat is installed in the middle of the upper side of the crossbeam, a first ball head is installed in the lower ball seat, the lower end of the scraper passes through the first ball head, a through hole that passes through the inside and outside is provided in the middle of the cooling chamber, a side ball seat is installed in the through hole, a second ball head is installed in the side ball seat, a joystick is hinged in the middle of the scraper, the middle of the joystick passes through the second ball head, the outer end of the joystick is hinged to the power mechanism, and the power mechanism can drive the joystick to move according to a predetermined trajectory so that the scraper moves regularly to scrape the coke inside the combustion chamber.

[0006] The following are further optimizations and / or improvements to the above technical solutions:

[0007] The above-mentioned power mechanism may include a motor, a base plate, an outer plate, a center plate, a movable plate, a movable shaft, an upper ball seat, and a third ball head. The motor is installed on the lower side of the base plate, the center plate is installed on the upper side of the middle part of the base plate, the outer plate is installed on the upper side of the base plate outside the center plate, a track groove is formed between the center plate and the outer plate, the movable plate is located on the upper side of the center plate and the outer plate, the output end of the motor passes through the base plate and the center plate from bottom to top in sequence and is connected to the movable plate for transmission, the movable plate is provided with a sliding groove that passes through the upper and lower parts, the lower end of the movable shaft passes through the sliding groove and is located in the track groove, the upper end of the movable shaft is installed together with the lower side of the upper ball seat, the third ball head is installed in the upper ball seat, and the left end of the joystick is installed in the third ball head.

[0008] The above-mentioned may also include a downward pressing device, which includes a downward pressing ball seat, a fourth ball head, a downward pressing rod, and a downward pressing block. The downward pressing ball seat is fixedly installed on the upper side of the upper ball seat, and the fourth ball head is provided in the downward pressing ball seat. The left end of the downward pressing rod is installed in the fourth ball head, and the right end of the downward pressing rod is installed. The downward pressing rod is inclined with the left side higher and the right side lower. The joystick includes a first joystick, a second joystick and a third joystick. The left end of the first joystick is installed together with the third ball head, and the right end of the first joystick is hinged to the first hinge. The upper side of the first hinge is fixedly installed together with the lower side of the downward pressing block, the left end of the second joystick is hinged to the first hinge through the second hinge, and the right end of the second joystick is installed together with the left end of the third joystick. The outer diameter and weight of the second joystick are both larger than those of the third joystick, and the right end of the third joystick is hinged to the scraper through the third hinge.

[0009] The above may also include a fine-tuning structure, which includes a spring and a connecting tube. A threaded hole is provided on the inner side of the right end of the second joystick. The outer side of the left part of the connecting tube is threadedly connected to the inner side of the right end of the second joystick. A channel running through the left and right is provided in the middle of the connecting tube. The left end of the third joystick is T-shaped, and a baffle is provided on the inner side of the right end of the connecting tube. The right end of the third joystick passes through the connecting tube and the baffle. A spring is provided between the left side of the third joystick and the left side of the threaded hole at the right end of the second joystick.

[0010] The above may also include a lifting mechanism, in which a cylinder capable of lifting the power mechanism as a whole is installed on the lower side of the base plate corresponding to the center of gravity of the power mechanism.

[0011] The above can also include a vertical plate and a base, the front and rear sides of the base plate are respectively provided with vertical plates, the middle part of the vertical plate is provided with a support block, the base plate seat is on the support block, and the two vertical plates are provided with guide grooves that pass through the front and back and are inclined with the left lower and the right higher. Sliders are fixedly installed on the front and rear sides of the outer plate, and the sliders are located in the guide grooves at corresponding positions. When the cylinder pushes the base plate to rise, the sliders can slide and guide in the guide grooves. The lower end of the vertical plate is installed on the base, and the cylinder is installed on the base.

[0012] The scraper may include an upper scraper and a lower scraper. The upper and lower sides of the third hinge are fixedly mounted with the upper scraper and the lower scraper respectively. The lower end of the lower scraper passes through the first ball head and the lower ball seat.

[0013] The inner side of the combustion chamber may be hexagonal, and the outer side of the upper scraper may be hexagonal and consistent with the shape of the inner side of the combustion chamber.

[0014] At least one bearing may be installed at intervals above and below the lower portion of the movable shaft, and grooves capable of supporting and limiting the movement of the bearing are provided on the outer side of the center plate and the inner side of the outer plate corresponding to the upper and lower positions of each bearing.

[0015] The present invention has a reasonable and compact structure and is easy to use. It can drive the operating lever to move along a predetermined trajectory through a power mechanism. The operating lever pushes the scraper to move, so that the scraper moves along a fixed trajectory and contacts each inner side surface of the combustion chamber, thereby scraping off the coke accumulated during the oxidation reaction and reducing the problem of high labor intensity and low efficiency when the operator manually scrapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attachment Figure 1 This is a schematic diagram of the main structure of Example 1 of the present invention.

[0017] Attachment Figure 2 For attachment Figure 1 Schematic diagram of the three-dimensional structure.

[0018] Attachment Figure 3 For attachment Figure 1 Schematic diagram of the three-dimensional structure of the acetylene removal furnace.

[0019] Attachment Figure 4 For attachment Figure 1 Schematic diagram of the three-dimensional structure of the power mechanism.

[0020] Attachment Figure 5 For attachment Figure 1 Schematic diagram of the main cross-sectional structure of the middle fine-tuning mechanism.

[0021] The codes in the attached drawings are: 1 for the side ball seat, 2 for the lower ball seat, 3 for the combustion chamber, 4 for the cooling chamber, 5 for the crossbeam, 6 for the first ball head, 7 for the second ball head, 8 for the motor, 9 for the bottom plate, 10 for the outer plate, 11 for the center plate, 12 for the movable plate, 13 for the movable shaft, 14 for the upper ball seat, 15 for the third ball head, 16 for the track groove, 17 for the slide groove, 18 for the lower pressure ball seat, 19 for the fourth ball head, 20 for the lower pressure rod, 21 is a lower pressure block, 22 is a first operating lever, 23 is a second operating lever, 24 is a third operating lever, 25 is a first hinge, 26 is a second hinge, 27 is a third hinge, 28 is a spring, 29 is a connecting tube, 30 is a baffle, 31 is a cylinder, 32 is a vertical plate, 33 is a base, 34 is a support block, 35 is a guide groove, 36 is a slider, 37 is an upper scraper, 38 is a lower scraper, 39 is a bearing, and 40 is a groove. DETAILED DESCRIPTION

[0022] The present invention is not limited to the following embodiments, and specific implementation methods can be determined based on the technical solutions of the present invention and actual conditions.

[0023] In the present invention, for the convenience of description, the relative position relationship of each component is described based on the Figure 1 For example, the positional relationships of front, back, up, down, left, and right are determined according to the layout directions of the drawings in the specification.

[0024] The present invention will be further described below in conjunction with the embodiments and accompanying drawings:

[0025] Example 1: As shown in the attached Figure 1 、 2 As shown in Figures 3, 4, and 5, the automatic carbon scraping device for the combustion chamber of the acetylene furnace includes an acetylene furnace, a scraper, a joystick, a side ball seat 1, a lower ball seat 2, and a power mechanism. A scraper is provided in the acetylene furnace. The acetylene furnace includes a combustion chamber 3 and a cooling chamber 4. The combustion chamber 3 is installed on the upper end of the cooling chamber 4. A crossbeam 5 is installed on the inner bottom of the cooling chamber 4. A lower ball seat 2 is installed in the middle of the upper side of the crossbeam 5. A first ball head 6 is installed in the lower ball seat 2. The lower end of the scraper passes through the first ball head 6. A through hole that passes through the inside and outside is provided in the middle of the cooling chamber 4. A side ball seat 1 is installed in the through hole. A second ball head 7 is installed in the side ball seat 1. A joystick is hinged in the middle of the scraper. The second ball head 7 passes through the middle of the joystick. The outer end of the joystick is hinged to the power mechanism. The power mechanism can drive the joystick to move according to a predetermined trajectory to make the scraper move regularly to scrape the coke inside the combustion chamber 3.

[0026] The trajectory of the joystick is designed based on the shape of the interior of the combustion chamber 3 and the movement of the scraper, ensuring that the scraper can conform to each inner surface of the combustion chamber 3, thereby achieving a better carbon scraping effect. During use, when the combustion chamber 3 is not reacting, the scraper is placed in the acetylene furnace combustion chamber 3 and the present invention is activated to scrape carbon. The power mechanism is turned on, and the power structure drives the joystick to move along a predetermined horizontal trajectory. The side ball seat 1 and the second ball head 7 serve as the fulcrum of the middle of the joystick, making the joystick movement smoother. The joystick pushes the middle of the scraper, allowing the upper outer portion of the scraper to sequentially contact each inner surface of the combustion chamber 3. The lower portion of the scraper rotates around the lower ball seat 2 and the first ball head 6. When carbon scraping is completed, the scraper is lowered so that its upper portion is located within the cooling chamber 4, preventing high temperatures from damaging the device during the reaction in the combustion chamber 3. The present invention uses the power mechanism and the movement of the joystick to drive the scraper to scrape carbon ash from the combustion chamber 3, eliminating the need for manual scraping, reducing labor intensity and improving efficiency.

[0027] The automatic carbon scraping device for the combustion chamber of the acetylene furnace can be further optimized and / or improved according to actual needs:

[0028] Example 2: As shown in the attached Figure 1 、 2 As shown in Figures 3 and 4, the power mechanism includes a motor 8, a base plate 9, an outer plate 10, a center plate 11, a movable plate 12, a movable shaft 13, an upper ball seat 14, and a third ball head 15. The motor 8 is installed on the lower side of the base plate 9, the center plate 11 is installed on the upper side of the middle part of the base plate 9, the outer plate 10 is installed on the upper side of the base plate 9 outside the center plate 11, a track groove 16 is formed between the center plate 11 and the outer plate 10, and the movable plate 12 is located on the upper side of the center plate 11 and the outer plate 10. The output end of the motor 8 passes through the base plate 9 and the center plate 11 from bottom to top in sequence and is connected to the movable plate 12 for transmission. The movable plate 12 is provided with a slide groove 17 that passes through the upper and lower parts. The lower end of the movable shaft 13 passes through the slide groove 17 and is located in the track groove 16. The upper end of the movable shaft 13 is installed together with the lower side of the upper ball seat 14. The third ball head 15 is installed in the upper ball seat 14, and the left end of the joystick is installed in the third ball head 15.

[0029] During use, a track groove 16 is set between the center plate 11 and the outer plate 10 according to the inner shape of the combustion chamber 3 and the running path of the scraper. The output end of the motor 8 drives the movable plate 12 to rotate, and the lower part of the movable shaft 13 is located in the track groove 16. When the movable plate 12 rotates, the movable shaft 13 moves along the track groove 16, and the movable shaft 13 slides in the slide groove 17. The upper ball seat 14 located on the upper side of the movable shaft 13 moves with the movable shaft 13. The movement of the upper ball seat 14 pushes the joystick to move, and the joystick pushes the scraper to rotate around the lower ball seat 2 in the horizontal plane. The outer side of the upper part of the scraper rotates along the inner side of the combustion chamber 3 in sequence to complete the coke scraping action.

[0030] Example 3: As shown in the attached Figure 1 、2 , 3, 4, also includes a pressing device, the pressing device includes a pressing ball seat 18, a fourth ball head 19, a pressing rod 20, a pressing block 21, the upper side of the upper ball seat 14 is fixedly mounted with a pressing ball seat 18, a fourth ball head 19 is provided in the pressing ball seat 18, the left end of the pressing rod 20 is mounted in the fourth ball head 19, the right end of the pressing rod 20 is mounted with a pressing block 21, the pressing rod 20 is tilted to the left high and right low, the joystick includes a first joystick 22, a second joystick 23 and a third joystick 24, the first joystick 2 2 is mounted on the left end thereof with the third ball head 15, the right end of the first operating rod 22 is hinged to the first hinge 25, the upper side of the first hinge 25 is fixedly mounted to the lower side of the lower pressing block 21, the left end of the second operating rod 23 is hinged to the first hinge 25 via a second hinge 26, the right end of the second operating rod 23 is mounted on the left end of the third operating rod 24, the outer diameter and weight of the second operating rod 23 are both larger than those of the third operating rod 24, and the right end of the third operating rod 24 is hinged to the scraper via a third hinge 27.

[0031] The advantage of dividing the joystick into three sections is that if the joystick is a straight rod, the joystick can only rotate with the side ball seat 1 as the fulcrum. When the device is lifted as a whole, the joystick will interfere with the cooling chamber 4. However, if multiple joysticks are hinged together, the fulcrum of the joystick can be moved forward when the power mechanism rises, avoiding interference.

[0032] During use, when the joystick pushes the scraper to the right side of the cooling chamber 4, the joystick extends a long distance into the cooling chamber 4, while the joystick is short outside the cooling chamber 4. Therefore, the right part of the joystick is heavy and the left part is light, causing the first hinge 25 and the second hinge 26 to tilt upward, causing the movable shaft 13 to be blocked in the track groove 16. Therefore, a downward pressing device is provided to press the first hinge 25 to avoid this situation and ensure normal operation.

[0033] Example 4: As shown in the attached Figure 1 、 2 As shown in , 3, 4, and 5, it also includes a fine-tuning structure, which includes a spring 28 and a connecting tube 29. A threaded hole is provided on the inner side of the right end of the second operating rod 23, and the outer side of the left part of the connecting tube 29 is threadedly connected to the inner side of the right end of the second operating rod 23. A channel running through the left and right is provided in the middle of the connecting tube 29. The left end of the third operating rod 24 is T-shaped, and a baffle 30 is provided on the inner side of the right end of the connecting tube 29. The right end of the third operating rod 24 passes through the connecting tube 29 and the baffle 30. A spring 28 is provided between the left side of the third operating rod 24 and the left side of the threaded hole at the right end of the second operating rod 23.

[0034] During use, by setting the spring 28, the third operating lever 24 has a certain amount of floating space left and right. When the scraper is excessively squeezed against the inner side of the combustion chamber 3, the scraper can push the third operating lever 24 in the opposite direction to move the compressed spring 28 to the left, so that the scraper can reasonably contact the inner wall of the combustion chamber 3 without excessively squeezing the inner side of the combustion chamber 3 to avoid damaging the inner wall, which is more in line with actual needs.

[0035] Example 5: As shown in the attached Figure 1 、 2 As shown in , 3 and 4, it also includes a lifting mechanism, and a cylinder 31 capable of lifting the power mechanism as a whole is installed on the lower side of the base plate 9 corresponding to the center of gravity position of the power mechanism.

[0036] During use, since the temperature of the combustion chamber 3 is high during the reaction, the scraper needs to be retracted into the cooling chamber 4 and then lifted to the combustion chamber 3 when in use. Therefore, a lifting mechanism is provided to complete the lifting and lowering of the scraper to reduce manual operation.

[0037] When the work is completed and the scraper needs to be lowered and retracted, the cylinder 31 pushes the power mechanism as a whole to move upward. Under the restriction of the side ball seat 1, the joystick is tilted with the left higher and the right lower, so the joystick pushes the scraper to move downward, and the lower end of the scraper moves downward relative to the lower ball seat 2 and the first ball head 6, thereby retracting the scraper into the cooling chamber 4. When carbon scraping is needed, the operating cylinder 31 is operated to pull the power mechanism downward, causing the right part of the operating lever to tilt upward, thereby lifting the scraper and moving it upward, so that the upper part of the scraper is located in the combustion chamber 3.

[0038] Example 6: As shown in the attached Figure 1 、 2 As shown in , 3 and 4, it also includes a vertical plate 32 and a base 33. The front and rear sides of the bottom plate 9 are respectively provided with vertical plates 32, and a support block 34 is provided in the middle of the vertical plate 32. The bottom plate 9 is seated on the support block 34. The two vertical plates 32 are provided with guide grooves 35 that pass through the front and back and are inclined with the left lower and the right higher. Sliders 36 are fixedly installed on the front and rear sides of the outer plate 10. The sliders 36 are located in the guide grooves 35 at corresponding positions. When the cylinder 31 pushes the bottom plate 9 to rise, the sliders 36 can slide and guide in the guide grooves 35. The lower ends of the vertical plates 32 are installed on the base 33, and the cylinder 31 is installed on the base 33.

[0039] When the cylinder 31 pushes the bottom plate 9 to move up and down, the slider 36 slides in the guide groove 35 to limit the movement trajectory of the bottom plate 9 and keep the bottom plate 9 running smoothly as a whole.

[0040] Example 7: As shown in the attached Figure 3 As shown, the scraper includes an upper scraper 37 and a lower scraper 38 , which are fixedly mounted on the upper and lower sides of the third hinge 27 , respectively. The lower end of the lower scraper 38 passes through the first ball head 6 and the lower ball seat 2 .

[0041] By providing a split scraper, when the upper scraper 37 is damaged, the upper scraper 37 can be replaced separately, saving costs.

[0042] Example 8: As shown in the attached Figure 3 As shown, the inner side of the combustion chamber 3 is hexagonal, and the outer side of the upper scraper 37 is hexagonal, which is consistent with the shape of the inner side of the combustion chamber 3.

[0043] In order to better fit the inner wall of the combustion chamber 3, the upper scraper 37 is made to have the same shape as the inner wall of the combustion chamber 3, which results in a better fit, a larger scraping area and reduced coke accumulation.

[0044] Example 9: As shown in the attached Figure 1 、 2 As shown in Figures 3 and 4, at least one bearing 39 is installed at intervals on the lower part of the movable shaft 13, and grooves 40 that can support and limit the movement of the bearing 39 are provided on the outer side of the center plate 11 and the inner side of the outer plate 10 corresponding to the upper and lower positions of each bearing 39.

[0045] In actual use, two bearings 39 are provided, which can reduce the occurrence of jamming compared to one bearing 39. The upper and lower sides of the bearing 39 are both located in the groove 40. The lower side of the groove 40 can support the bearing 39, and the upper side of the groove 40 can press the bearing 39 to prevent it from moving up and down.

[0046] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.

Claims

1. An automatic carbon scraping device for the combustion chamber of an acetylene furnace, characterized in that It includes an acetylene furnace, a scraper, a joystick, a side ball seat, a lower ball seat and a power mechanism. The acetylene furnace is provided with a scraper. The acetylene furnace includes a combustion chamber and a cooling chamber. The combustion chamber is installed at the upper end of the cooling chamber. A crossbeam is installed at the bottom of the inner side of the cooling chamber. A lower ball seat is installed in the middle of the upper side of the crossbeam. A first ball head is installed in the lower ball seat. The lower end of the scraper passes through the first ball head. A through hole that passes through the inside and outside is provided in the middle of the cooling chamber. A side ball seat is installed in the through hole. A second ball head is installed in the side ball seat. A joystick is hinged in the middle of the scraper. The second ball head passes through the middle of the joystick. The outer end of the joystick is hinged to the power mechanism. The power mechanism can drive the joystick to move according to a predetermined trajectory to make the scraper move regularly to scrape the inside of the combustion chamber. Coke; the power mechanism includes a motor, a base plate, an outer plate, a center plate, a movable plate, a movable shaft, an upper ball seat, and a third ball head. The motor is installed on the lower side of the base plate, the center plate is installed on the upper side of the middle of the base plate, the outer plate is installed on the upper side of the base plate, the outer plate is located outside the center plate, and a track groove is formed between the center plate and the outer plate. The movable plate is located on the upper side of the center plate and the outer plate. The output end of the motor passes through the base plate and the center plate from bottom to top and is connected to the movable plate for transmission. The movable plate is provided with a sliding groove that passes through the upper and lower parts. The lower end of the movable shaft passes through the sliding groove and is located in the track groove. The upper end of the movable shaft is installed together with the lower side of the upper ball seat. The third ball head is installed in the upper ball seat, and the left end of the joystick is installed in the third ball head. It also includes The pressing device comprises a pressing ball seat, a fourth ball head, a pressing rod and a pressing block. The pressing ball seat is fixedly installed on the upper side of the upper ball seat, and a fourth ball head is provided in the pressing ball seat. The left end of the pressing rod is installed in the fourth ball head, and the right end of the pressing rod is installed with the pressing block. The pressing rod is tilted in a left-high-right-low shape. The joystick comprises a first joystick, a second joystick and a third joystick. The left end of the first joystick is installed together with the third ball head, the right end of the first joystick is hinged to the first hinge, the upper side of the first hinge is fixedly installed together with the lower side of the pressing block, the left end of the second joystick is hinged to the first hinge through the second hinge, the right end of the second joystick is installed together with the left end of the third joystick, and the second joystick The outer diameter and weight of the longitudinal rod are both larger than the third operating rod, and the right end of the third operating rod is hinged to the scraper through the third hinge; it also includes a lifting mechanism, and a cylinder that can lift the power mechanism as a whole is installed on the lower side of the base plate corresponding to the center of gravity of the power mechanism; it also includes a vertical plate and a base, and a vertical plate is provided on the front and rear sides of the base plate respectively, and a support block is provided in the middle of the vertical plate, and the base plate is placed on the support block. Both vertical plates are provided with guide grooves that pass through the front and back and are inclined with the left lower and the right higher. Sliders are fixedly installed on the front and rear sides of the outer plate, and the sliders are located in the guide grooves at corresponding positions. When the cylinder pushes the base plate to rise, the slider can slide and guide in the guide groove. The lower end of the vertical plate is installed on the base, and the cylinder is installed on the base.

2. The automatic carbon scraping device for the combustion chamber of an acetylene furnace according to claim 1, characterized in that It also includes a fine-tuning structure, which includes a spring and a connecting tube. A threaded hole is provided on the inner side of the right end of the second joystick. The outer side of the left part of the connecting tube is threadedly connected to the inner side of the right end of the second joystick. A channel running through the left and right is provided in the middle of the connecting tube. The left end of the third joystick is T-shaped, and a baffle is provided on the inner side of the right end of the connecting tube. The right end of the third joystick passes through the connecting tube and the baffle. A spring is provided between the left side of the third joystick and the left end surface of the inner side of the threaded hole at the right end of the second joystick.

3. The automatic carbon scraping device for the combustion chamber of an acetylene furnace according to claim 1 or 2, characterized in that The scraper includes an upper scraper and a lower scraper. The upper scraper and the lower scraper are fixedly installed on the upper side and the lower side of the third hinge respectively. The lower end of the lower scraper passes through the first ball head and the lower ball seat.

4. The automatic carbon scraping device for the combustion chamber of an acetylene furnace according to claim 3, characterized in that The inner side of the combustion chamber is hexagonal, and the outer side of the upper scraper is hexagonal and consistent with the shape of the inner side of the combustion chamber.

5. The automatic carbon scraping device for the combustion chamber of an acetylene furnace according to claim 1, 2 or 4, characterized in that At least one bearing is installed at intervals above and below the lower part of the movable shaft, and grooves capable of supporting and limiting the movement of the bearing are provided on the outer side of the central plate and the inner side of the peripheral plate corresponding to the upper and lower positions of each bearing.

6. The automatic carbon scraping device for the combustion chamber of an acetylene furnace according to claim 3, characterized in that At least one bearing is installed at intervals above and below the lower part of the movable shaft, and grooves capable of supporting and limiting the movement of the bearing are provided on the outer side of the central plate and the inner side of the peripheral plate corresponding to the upper and lower positions of each bearing.

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