Smelting furnace temperature control and flue ash cleaning device

Abstract

The invention discloses a smelting furnace temperature control and flue ash cleaning device, which relates to the technical field of smelting furnace flues, and comprises a frame body connected to the outer wall of a flue in a sliding manner, a rotatable gate plate is arranged on the frame body, and a scraping plate in sliding connection is arranged in the gate plate and is in transmission connection with an opening and closing mechanism; the flashboard is in transmission connection with the rotary driving mechanism; the frame body is connected with the lifting mechanism; the opening and closing mechanism drives the scraping plate to extend out of the flashboard, and the rotary driving mechanism drives the flashboard and the scraping plate to rotate, so that the edges of the flashboard and the scraping plate scrape and clean the inner wall of the flue; a vertical groove is formed in the side wall of the flue, and the lifting mechanism can drive the flashboard to ascend and descend in the vertical groove. According to the flue cleaning device, the inner wall of the whole flue is cleaned through the flashboard and the scraper which rotate in the rising process, people do not need to enter the flue, the problems that the flue cleaning difficulty is large, and potential safety hazards exist in the cleaning environment are solved, and in addition, the flue cleaning device has the beneficial effect of assisting temperature control of the smelting furnace.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furnace flue, in particular to a furnace temperature control and flue ash cleaning device. BACKGROUND

[0002] In the production process of metal smelting and deep processing (such as casting, die casting, continuous casting), the furnace as the core thermal equipment, its core function is to efficiently convert solid metal into uniform composition and temperature up to the liquid melt, and continuously maintain in the precise temperature range required by the subsequent process, the upper part of the furnace is connected with the inlet of the flue, the outlet end of the flue is buried underground and connected with the dust removal workshop, and after dust removal treatment, it is discharged (such as shown in Figure 1 The flue as a necessary structure of the furnace plays a role in discharging flue gas and ventilation. In the long-term production and use process, a large amount of ash will accumulate on the inner wall of the flue, and the long-term accumulation of ash will cause coking and ash accumulation, hinder the heat transfer efficiency, cause the temperature of the flue gas to rise, and the energy consumption to increase, and in severe cases, the furnace needs to be stopped for coking treatment. At present, the artificial cleaning method is generally used, and the ash adhering to the inner wall of the vertical flue is extremely difficult to clean due to the height and space limitation, and because the air in the flue is not flowing and is mixed with a lot of toxic and harmful dust, it seriously threatens the safety and health of the workers. SUMMARY

[0003] The purpose of the present application is to provide a furnace temperature control and flue ash cleaning device to solve the problem of difficult cleaning of the ash in the vertical flue due to the height and space limitation in the background art.

[0004] The present application adopts the following technical scheme:

[0005] The present application provides a furnace temperature control and flue ash cleaning device, which comprises a frame body, the frame body is slidably connected to the outer wall of the flue;

[0006] A rotatable gate is provided on the frame body, the rotation axis of the gate is perpendicular to the flue, the two ends of the gate are in contact with the inner wall of the flue, a slidingly connected scraper is provided in the gate, the scraper is drivingly connected with an opening and closing mechanism, and the opening and closing mechanism is provided in the gate;

[0007] The gate is drivingly connected with a rotary drive mechanism, the rotary drive mechanism is provided on the frame body, and the frame body is connected with a lifting mechanism;

[0008] The opening and closing mechanism drives the scraper to extend out of the gate, and the outer edge of the scraper is in abutting contact with the inner wall of the flue, the rotary drive mechanism drives the gate and the scraper to rotate, so that the edges of the gate and the scraper vertically scrape and clean the inner wall of the flue;

[0009] The flue side wall is provided with a vertical slot, and the lifting mechanism can drive the gate to move up and down in the vertical slot.

[0010] Preferably, the bottom of the flue is provided with a horizontal opening.

[0011] Preferably, the outer wall of the flue is provided with a first vertical sliding groove, and the frame body is provided with a first sliding rail which is in sliding connection with the first sliding groove.

[0012] Preferably, the gate comprises a lower gate and an upper gate, and the two ends of the lower gate and the upper gate are provided with butt joints which are connected together by means of a bolt assembly.

[0013] The two ends of the lower gate are provided with a second sliding groove and a third sliding groove, the scraper comprises a first scraper and a second scraper, the two ends of the first scraper are provided with a second sliding rail, the two ends of the second scraper are provided with a third sliding rail, the second sliding rail is slidingly arranged in the second sliding groove, and the third sliding rail is slidingly arranged in the third sliding groove.

[0014] Preferably, the two ends of the second sliding groove and the third sliding groove are provided with limiting edges.

[0015] Preferably, the opening and closing mechanism comprises a gear, a first rack and a second rack, one end of the first rack is fixedly connected to the first scraper, and one end of the second rack is fixedly connected to the second scraper.

[0016] The first rack and the second rack are arranged in parallel, and the first rack and the second rack are respectively in meshing connection with the gear.

[0017] The gear is arranged on an opening and closing drive motor, and the opening and closing drive motor is arranged in the lower gate.

[0018] Preferably, one end of the lower surface of the first rack is fixedly connected to the upper surface of the first scraper, the other end of the lower surface of the first rack is provided with a fourth sliding rail, the upper surface of the second scraper is provided with a fourth sliding groove, and the fourth sliding rail is in sliding connection with the fourth sliding groove.

[0019] The upper surface of the first rack is provided with a sixth sliding rail, the inner surface of the upper gate is provided with a sixth sliding groove, and the sixth sliding rail is slidingly arranged in the sixth sliding groove.

[0020] One end of the lower surface of the second rack is fixedly connected to the upper surface of the second scraper, the other end of the lower surface of the second rack is provided with a fifth sliding rail, the upper surface of the first scraper is provided with a fifth sliding groove, and the fifth sliding rail is in sliding connection with the fifth sliding groove.

[0021] The upper surface of the second rack is provided with a seventh sliding rail, and the inner surface of the upper gate is provided with a seventh sliding groove, and the seventh sliding rail is slidingly arranged in the seventh sliding groove.

[0022] Preferably, the rotating driving mechanism comprises a rotating driving motor.

[0023] The lower gate is fixedly connected with one end of a fixed shaft, and the other end of the fixed shaft is fixedly connected with the output end of the rotating driving motor.

[0024] The fixed shaft is rotatably arranged in the sleeve.

[0025] Preferably, the lifting mechanism is a hydraulic cylinder, and the frame body is arranged at the top end of the telescopic end of the hydraulic cylinder.

[0026] Preferably, the lifting mechanism comprises two vertically arranged rotatable screw rods, the bottom end of each screw rod is fixedly provided with a synchronous wheel, the synchronous wheel is drivingly connected with a driving wheel through a synchronous belt, and the driving wheel is arranged on a lifting driving motor.

[0027] The two sides of the frame body are provided with threaded sleeves, and the threaded sleeves are threadedly connected with the screw rods.

[0028] Compared with the prior art, the present application has the beneficial technical effects that:

[0029] The present application can rotate the gate and extend or retract the scraper, extend the scraper by the opening and closing mechanism, make the scraper contact the inner wall of the flue, slowly raise the gate and the scraper by the lifting mechanism, realize the cleaning of the entire inner wall of the flue by the vertical rotation of the gate and the scraper during the raising process, and solve the problems of high difficulty in cleaning the flue and safety hazards in the cleaning environment. At the same time, due to the vertical rotation design of the gate and the scraper, the ash cleaned during the rotation cleaning process directly falls to the lower side of the flue and does not fall on the gate and the scraper. In addition, the gate and the scraper can form a closed state for the flue, effectively inhibit the loss of heat source in the hearth with flue gas, retract the scraper and adjust the angle of the gate to open the flue when the furnace is heated, make the air flow quickly, promote the full combustion of natural gas, significantly improve the energy conversion rate, and have the beneficial effect of assisting the temperature control of the furnace. BRIEF DESCRIPTION OF DRAWINGS

[0030] The present application will be further described below in conjunction with the drawings.

[0031] Figure 1 The structure of the furnace and the flue mentioned in the background art is shown in the figure;

[0032] Figure 2This is a schematic diagram of the flue structure in the furnace temperature control and flue ash cleaning device of the present invention, as shown in Embodiment 1.

[0033] Figure 3 This is a top view of the flue in the furnace temperature control and flue ash cleaning device of the present invention, as described in Embodiment 1.

[0034] Figure 4 This is a top view of the furnace temperature control and flue ash cleaning device of the present invention after it has been placed in the embodiment 1.

[0035] Figure 5 This is a top view of the scraper opening and closing effect after the device is placed in the furnace temperature control and flue ash cleaning device of the present invention in Embodiment 1.

[0036] Figure 6 This is a top view of the frame and gate plate in the furnace temperature control and flue ash cleaning device of the present invention, as shown in Embodiment 1.

[0037] Figure 7 This is a cross-sectional view of the furnace temperature control and flue ash cleaning device of the present invention, as shown in Embodiment 1.

[0038] Figure 8 This is a bottom view of the upper gate plate in the furnace temperature control and flue ash cleaning device of the present invention, as shown in Embodiment 1.

[0039] Figure 9 This is a top view of the furnace temperature control and flue ash cleaning device of the present invention after removing the upper gate plate, as shown in Embodiment 1.

[0040] Figure 10 This is a schematic diagram of the second and third chute structures in the furnace temperature control and flue ash cleaning device of the present invention, as shown in Embodiment 1.

[0041] Figure 11 This is a schematic diagram of the scraper structure in the furnace temperature control and flue ash cleaning device of the present invention, as shown in Embodiment 1.

[0042] Figure 12 This is a schematic diagram of the structure of the first and second racks in the furnace temperature control and flue ash cleaning device of the present invention, as shown in Embodiment 1.

[0043] Figure 13 This is a schematic diagram of the lifting mechanism in the furnace temperature control and flue ash cleaning device of the present invention, as shown in Example 2. Figure 1 ;

[0044] Figure 14 This is a schematic diagram of the frame structure in the furnace temperature control and flue ash cleaning device of the present invention, as shown in Embodiment 2.

[0045] Explanation of reference numerals in the attached drawings: 1. Frame; 1-1. First slide rail; 1-2. Sleeve; 2. Flue; 2-1. Vertical groove; 2-2. Horizontal opening; 2-3. First slide groove; 3. Gate; 3-1. Lower gate; 3-1-1. Second slide groove; 3-1-2. Third slide groove; 3-1-3. Limiting stop; 3-2. Upper gate; 3-2-1. Sixth slide groove; 3-2-2. Seventh slide groove; 3-3. Connecting end; 3-4. Fixed shaft; 4. Scraper; 4-1. First scraper; 4-1-1. Second slide rail; 4-1-2. Fifth slide groove; 4-2. 4-2-1, Third slide rail; 4-2-2, Fourth slide groove; 5, Opening and closing mechanism; 5-1, Gear; 5-2, First rack; 5-2-1, Fourth slide rail; 5-2-2, Sixth slide rail; 5-3, Second rack; 5-3-1, Fifth slide rail; 5-3-2, Seventh slide rail; 5-4, Opening and closing drive motor; 6, Rotation drive mechanism; 6-1, Rotation drive motor; 7, Lifting mechanism; 7-1, Screw; 7-2, Synchronous pulley; 7-3, Synchronous belt; 7-4, Drive pulley; 7-5, Lifting drive motor; 7-6, Threaded sleeve. Detailed Implementation

[0046] To make the technical problems, technical solutions, and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0047] Example 1

[0048] like Figures 2 to 6 As shown, this embodiment discloses a furnace temperature control and flue ash cleaning device, including a frame 1, with first slide rails 1-1 on both sides of the frame 1, and a vertically arranged first slide groove 2-3 on the outer wall of the flue 2, with the first slide rails 1-1 and the first slide groove 2-3 slidably connected and engaged.

[0049] The frame 1 is equipped with a rotatable gate 3, the rotation axis of which is perpendicular to the flue 2 (i.e., parallel to the horizontal plane). The left and right ends of the gate 3 (i.e., as shown in the figure) Figures 4 to 6 The left and right ends of the gate plate 3 (as shown) are in contact with the inner wall of the flue 2. A slidably connected scraper 4 is installed inside the gate plate 3. The scraper 4 is driven by an opening and closing mechanism 5, which is located inside the gate plate 3. The gate plate 3 is driven by a rotary drive mechanism 6, which is mounted on a frame 1. The frame 1 is also connected to a lifting mechanism 7. The rotary drive mechanism 6 can drive the gate plate 3 to rotate. A vertical groove 2-1 is provided on the side wall of the flue 2, and the lifting mechanism 7 can drive the gate plate 3 to move up and down within the vertical groove 2-1.

[0050] In this embodiment, the flue 2 is located on the side of the furnace, and a horizontal opening 2-2 is provided at the bottom of the flue 2 for inserting the gate plate 3. The gate plate 3 is inserted through the horizontal opening 2-2, so that the edge of the gate plate 3 contacts the inner wall of the flue 2. The gate plate 3 is assembled with the rotary drive mechanism 6, and the rotary drive mechanism 6 is fixedly connected to the frame 1 by bolt assembly. The scraper 4 is extended from the gate plate 3 by the opening and closing mechanism 5, so that the edge of the scraper 4 is pressed tightly against the inner wall of the flue 2. The lifting mechanism 7 is activated, and the lifting mechanism 7 drives the gate plate 3 to rise slowly. During the rising process, the rotary drive mechanism 6 is activated at the same time, and the rotary drive mechanism 6 drives the gate plate 3 and the scraper 4 to rotate vertically. Thus, the gate plate 3 and the scraper 4 scrape the inner wall of the flue 2 vertically to clean it, so that the furnace ash falls to the bottom. Through the design of rising and rotating at the same time, it is ensured that the inner wall of the entire flue height can be effectively cleaned. It should be noted that the horizontal opening 2-2 also has another function. Specifically, after raising the gate 3 and scraper 4 one distance, the horizontal opening 2-2 is in an open state. At this time, the ash hopper can be inserted into the flue 2 from the horizontal opening 2-2. Then, the gate 3 and scraper 4 are started to rise and rotate while cleaning. The cleaned furnace ash will fall directly into the ash hopper, which is convenient for removal and unified treatment. The ash hopper is a drawer-shaped structure that matches the inner wall of the flue 2. Since it is a commonly used existing technology, it will not be described in detail here. After cleaning, the ash hopper is removed, and the gate 3 and frame 1 are put back to the bottom of the vertical groove 2-1 through the lifting mechanism 7. The vertical groove 2-1 is then sealed with ceramic fiber cotton, and the flue 2 can then work normally.

[0051] The gate 3 includes a lower gate 3-1 and an upper gate 3-2. Both ends of the lower gate 3-1 and the upper gate 3-2 are provided with mating ends 3-3 with bolt holes. The lower gate 3-1 and the upper gate 3-2 can be connected together by screwing bolt assemblies into the bolt holes of the mating ends 3-3.

[0052] like Figures 7 to 12 As shown, the lower gate 3-1 has a second sliding groove 3-1-1 and a third sliding groove 3-1-2 at both ends. The scraper 4 includes a first scraper 4-1 and a second scraper 4-2. The first scraper 4-1 has a second sliding rail 4-1-1 at both ends, and the second scraper 4-2 has a third sliding rail 4-2-1 at both ends. The second sliding rail 4-1-1 is slidably disposed within the second sliding groove 3-1-1, and the third sliding rail 4-2-1 is slidably disposed within the third sliding groove 3-1-2. Both ends of the second sliding groove 3-1-1 and the third sliding groove 3-1-2 are also provided with limiting flanges 3-1-3. The second sliding groove 3-1-1 and the third sliding groove 3-1-2 guide the first scraper 4-1 and the second scraper 4-2 as they extend outwards, while the limiting flanges 3-1-3 limit the sliding stroke of the first scraper 4-1 and the second scraper 4-2.

[0053] like Figure 7 , Figure 11 and Figure 12 As shown, the opening and closing mechanism 5 includes a gear 5-1, a first rack 5-2, and a second rack 5-3. One end of the first rack 5-2 is fixedly connected to the first scraper 4-1, and one end of the second rack 5-3 is fixedly connected to the second scraper 4-2. The first rack 5-2 and the second rack 5-3 are arranged in parallel, located on opposite sides of the gear 5-1 and meshing with it. When the gear 5-1 rotates, it drives the first rack 5-2 and the second rack 5-3 to perform linear movements in opposite directions and parallel to each other. The gear 5-1 is located at the output end of the opening and closing drive motor 5-4, which is located inside the lower gate 3-1.

[0054] One end of the lower surface of the first rack 5-2 is fixedly connected to the upper surface of the first scraper 4-1, and the other end of the lower surface of the first rack 5-2 is provided with a fourth slide rail 5-2-1. The upper surface of the second scraper 4-2 is provided with a fourth slide groove 4-2-2, and the fourth slide rail 5-2-1 and the fourth slide groove 4-2-2 are slidably connected and engaged. One end of the lower surface of the second rack 5-3 is fixedly connected to the upper surface of the second scraper 4-2, and the other end of the lower surface of the second rack 5-3 is provided with a fifth slide rail 5-3-1. The upper surface of the first scraper 4-1 is provided with a fifth slide groove 4-1-2, and the fifth slide rail 5-3-1 and the fifth slide groove 4-1-2 are slidably connected and engaged.

[0055] When the opening and closing drive motor 5-4 starts, it drives the gear 5-1 to rotate. The gear 5-1 pushes the first rack 5-2 and the second rack 5-3 to move outward, thereby causing the first scraper 4-1 and the second scraper 4-2 to extend. After they extend, the first scraper 4-1, the second scraper 4-2, the lower gate 3-1, and the upper gate 3-2 form a complete circle and come into contact with the inner wall of the flue 2. At this time, cleaning can be carried out.

[0056] The upper surface of the first rack 5-2 is provided with a sixth slide rail 5-2-2, and the inner surface of the upper gate plate 3-2 is provided with a sixth slide groove 3-2-1. The sixth slide rail 5-2-2 is slidably disposed within the sixth slide groove 3-2-1. The upper surface of the second rack 5-3 is provided with a seventh slide rail 5-3-2, and the inner surface of the upper gate plate 3-2 is provided with a seventh slide groove 3-2-2. The seventh slide rail 5-3-2 is slidably disposed within the seventh slide groove 3-2-2. The sliding connection between the first rack 5-2, the second rack 5-3, and the upper gate plate 3-2 provides auxiliary guidance.

[0057] like Figure 6As shown, the rotary drive mechanism 6 includes a rotary drive motor 6-1. The lower gate plate 3-1 is fixedly connected to one end of the fixed shaft 3-4, and the other end of the fixed shaft 3-4 is fixedly connected to the output end of the rotary drive motor 6-1. A sleeve 1-2 is also provided on the frame 1, and the fixed shaft 3-4 is rotatably disposed within the sleeve 1-2. When the rotary drive motor 6-1 is started, it can drive the lower gate plate 3-1, the upper gate plate 3-2, the first scraper 4-1, and the second scraper 4-2 to rotate via the fixed shaft 3-4, thereby performing cleaning work.

[0058] In this embodiment, the lifting mechanism 7 is a hydraulic cylinder, and the frame 1 is located at the top of the telescopic end of the hydraulic cylinder, which is buried underground. After the device is assembled, the hydraulic cylinder is started, which drives the frame 1 to slowly rise. First, the frame 1 is raised to a certain height to meet the height requirements for the rotation of the gate 3 and scraper 4. Then, the ash hopper is extended into the flue 2 from the horizontal opening 2-2 to collect the falling furnace ash. Then, the opening and closing drive motor 5-4 is started, and the gear 5-1 rotates, driving the first rack 5-2 and the second rack 5-3 to move outward, thereby driving the first scraper 4-1 and the second scraper 4-2 to extend. After extension, the first scraper 4-1 and the second scraper 4-2 form a complete circle with the lower gate 3-1 and the upper gate 3-2 and come into contact with the inner wall of the flue 2. Then it continues to rise. During the upward movement, the rotary drive motor 6-1 is started to drive the gate 3 and scraper 4 to rotate vertically. During the rotation, the edges of the gate 3 and scraper 4 scrape vertically against the inner wall of the flue 2, thereby cleaning away the furnace ash and other debris adhering to the inner wall of the flue 2. The fallen debris will fall into the ash collection hopper below. This invention features a unique vertical rotation method (i.e., the rotation axis of the gate 3 and scraper 4 is perpendicular to the vertical flue 2, and their rotation trajectory forms a sphere), rather than a horizontal rotation method (i.e., the rotation axis of the gate 3 and scraper 4 coincides with the axis of the vertical flue 2, and their rotation trajectory is a circular plane). This is because in the horizontal rotation method, when the gate 3 and scraper 4 are rotating for cleaning, furnace ash will fall onto the gate 3 and scraper 4 and gradually accumulate, requiring frequent cleaning of the furnace ash on the gate 3 and scraper 4. However, in the vertical rotation method of this invention, the cleaned furnace ash will fall directly downwards and will not accumulate on the gate 3 and scraper 4, avoiding the trouble of frequently cleaning the gate 3 and scraper 4.

[0059] Furthermore, those skilled in the art should know that when a hydraulic cylinder is selected for the lifting mechanism 7, a vertically arranged guide slide rod can be set in order to ensure the smooth lifting of the frame 1. The guide slide rod can be fixedly connected to the flue 2 through the frame. Sliding sleeves are fixedly set on both sides of the frame 1, and the sliding sleeves are slidably connected to the guide slide rod. The lifting of the frame 1 is guided by the guide slide rod. This part of the technical content belongs to the prior art and is only briefly introduced in this embodiment.

[0060] It should be noted that this invention can also be used for furnace temperature control. Specifically, traditional metal casting workshops, limited by the technology at the time, used furnaces that could not effectively prevent heat loss. Furthermore, the traditional flue 2 only had the function of venting flue gas and lacked the function of auxiliary furnace insulation, necessitating frequent consumption of natural gas for heating and insulation operations, severely restricting production efficiency and resulting in resource waste. After assembly and installation, the gate 3 is arranged horizontally within the flue 2 (or the scraper 4 can be extended to completely enclose the flue 2), reducing the effective ventilation diameter of the flue 2, thereby effectively suppressing heat loss from the furnace with the flue gas. When the furnace is heated, the scraper 4 is retracted, and the gate 3 is rotated using the rotary drive mechanism 6, making it vertically arranged within the flue 2, i.e., parallel to the direction of the flue 2. At this time, the inner cavity of the flue 2 is open, allowing rapid air circulation to promote complete combustion of natural gas in the furnace and significantly improving energy conversion rate.

[0061] Example 2

[0062] like Figure 13 and Figure 14 As shown, this embodiment employs a different design for the lifting mechanism 7. Specifically, the lifting mechanism 7 includes two vertically arranged screws 7-1. The top end of the screw 7-1 is connected to the flue 2 via a bearing and a bearing mounting seat, while the bottom end of the screw 7-1 is rotatably mounted on the ground via a bearing and a bearing mounting seat, thus ensuring both free rotation and stability. A synchronous pulley 7-2 is fixedly mounted at the bottom end of the screw 7-1. The synchronous pulley 7-2 is connected to the drive pulley 7-4 via a synchronous belt 7-3. The drive pulley 7-4 is mounted on the output end of the lifting drive motor 7-5, which is mounted on the ground. Threaded sleeves 7-6 are fixedly connected to both sides of the frame 1, and the threaded sleeves 7-6 are threaded onto the screws 7-1. Those skilled in the art should know that the threaded sleeves 7-6 are located above the synchronous pulleys 7-2, and the synchronous pulleys 7-2 are located below the lowest position of the lifting stroke of the frame 1. The screw 7-1 is rotated by the lifting drive motor 7-5, which in turn drives the frame 1 to lift and lower for cleaning work. In this embodiment, the other technical features are the same as in embodiment one, and will not be described again here.

[0063] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A furnace temperature control and flue ash cleaning device, characterized in that: Includes a frame (1), which is slidably connected to the outer wall of the flue (2); The frame (1) is provided with a rotatable gate (3), the rotation axis of the gate (3) is perpendicular to the flue (2), the two ends of the gate (3) are in contact with the inner wall of the flue (2), and a slidably connected scraper (4) is provided inside the gate (3). The scraper (4) is connected to the opening and closing mechanism (5) and the opening and closing mechanism (5) is provided inside the gate (3). The gate (3) is connected to the rotary drive mechanism (6) in a transmission connection. The rotary drive mechanism (6) is mounted on the frame (1). The frame (1) is connected to the lifting mechanism (7). The opening and closing mechanism (5) drives the scraper (4) to extend from the gate (3) and make the outer edge of the scraper (4) abut against the inner wall of the flue (2). The rotation drive mechanism (6) drives the gate (3) and the scraper (4) to rotate, so that the edges of the gate (3) and the scraper (4) scrape the inner wall of the flue (2) vertically. The flue (2) has a vertical groove (2-1) on its side wall, and the lifting mechanism (7) can drive the gate (3) to move up and down in the vertical groove (2-1).

2. The furnace temperature control and flue ash cleaning device according to claim 1, characterized in that: The bottom of the flue (2) has a horizontal opening (2-2).

3. The furnace temperature control and flue ash cleaning device according to claim 1, characterized in that: The outer wall of the flue (2) is provided with a vertically arranged first slide groove (2-3), and the frame (1) is provided with a first slide rail (1-1), which is slidably connected to the first slide groove (2-3).

4. The furnace temperature control and flue ash cleaning device according to claim 1, characterized in that: The gate (3) includes a lower gate (3-1) and an upper gate (3-2), and the two ends of the lower gate (3-1) and the upper gate (3-2) are provided with mating ends (3-3) that are connected together by means of bolt assemblies. The lower gate (3-1) is provided with a second slide groove (3-1-1) and a third slide groove (3-1-2) at both ends. The scraper (4) includes a first scraper (4-1) and a second scraper (4-2). The first scraper (4-1) is provided with a second slide rail (4-1-1) at both ends, and the second scraper (4-2) is provided with a third slide rail (4-2-1) at both ends. The second slide rail (4-1-1) is slidably disposed in the second slide groove (3-1-1), and the third slide rail (4-2-1) is slidably disposed in the third slide groove (3-1-2).

5. The furnace temperature control and flue ash cleaning device according to claim 4, characterized in that: Both ends of the second slide groove (3-1-1) and the third slide groove (3-1-2) are provided with limit stops (3-1-3).

6. The furnace temperature control and flue ash cleaning device according to claim 4, characterized in that: The opening and closing mechanism (5) includes a gear (5-1), a first rack (5-2), and a second rack (5-3). One end of the first rack (5-2) is fixedly connected to the first scraper (4-1), and one end of the second rack (5-3) is fixedly connected to the second scraper (4-2). The first rack (5-2) and the second rack (5-3) are arranged in parallel, and the first rack (5-2) and the second rack (5-3) are respectively meshed with the gear (5-1); The gear (5-1) is mounted on the opening and closing drive motor (5-4), which is located inside the lower gate plate (3-1).

7. The furnace temperature control and flue ash cleaning device according to claim 6, characterized in that: One end of the lower surface of the first rack (5-2) is fixedly connected to the upper surface of the first scraper (4-1), and the other end of the lower surface of the first rack (5-2) is provided with a fourth slide rail (5-2-1). The upper surface of the second scraper (4-2) is provided with a fourth slide groove (4-2-2), and the fourth slide rail (5-2-1) and the fourth slide groove (4-2-2) are slidably connected and engaged. The upper surface of the first rack (5-2) is provided with a sixth slide rail (5-2-2), and the inner surface of the upper gate (3-2) is provided with a sixth slide groove (3-2-1). The sixth slide rail (5-2-2) is slidably disposed in the sixth slide groove (3-2-1). One end of the lower surface of the second rack (5-3) is fixedly connected to the upper surface of the second scraper (4-2), and the other end of the lower surface of the second rack (5-3) is provided with a fifth slide rail (5-3-1). The upper surface of the first scraper (4-1) is provided with a fifth slide groove (4-1-2), and the fifth slide rail (5-3-1) and the fifth slide groove (4-1-2) are slidably connected and engaged. The upper surface of the second rack (5-3) is provided with a seventh slide rail (5-3-2), and the inner surface of the upper gate plate (3-2) is provided with a seventh slide groove (3-2-2). The seventh slide rail (5-3-2) is slidably disposed in the seventh slide groove (3-2-2).

8. The furnace temperature control and flue ash cleaning device according to claim 4, characterized in that: The rotary drive mechanism (6) includes a rotary drive motor (6-1); The lower gate (3-1) is fixedly connected to one end of the fixed shaft (3-4), and the other end of the fixed shaft (3-4) is fixedly connected to the output end of the rotary drive motor (6-1). The frame (1) is also provided with a sleeve (1-2), and the fixed shaft (3-4) is rotatably disposed in the sleeve (1-2).

9. The furnace temperature control and flue ash cleaning device according to claim 1, characterized in that: The lifting mechanism (7) is a hydraulic cylinder, and the frame (1) is located at the top of the telescopic end of the hydraulic cylinder.

10. The furnace temperature control and flue ash cleaning device according to claim 1, characterized in that: The lifting mechanism (7) includes two vertically arranged, rotatable screws (7-1). A synchronous pulley (7-2) is fixedly provided at the bottom end of the screw (7-1). The synchronous pulley (7-2) is connected to the drive pulley (7-4) by means of a synchronous belt (7-3). The drive pulley (7-4) is provided on the lifting drive motor (7-5). The frame (1) is provided with threaded sleeves (7-6) on both sides, and the threaded sleeves (7-6) are threadedly connected to the screw (7-1).

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