Device for cleaning dirt inside furnace

Abstract

Provided is a device for cleaning dirt inside a furnace, comprising: a support unit (100), the support unit (100) comprising a mounting tube (101) and a holding assembly (102) provided at an end portion of the mounting tube (101); and a cleaning unit (200), the cleaning unit (200) comprising a mounting box (201) arranged at the other end of the mounting tube (101), a first spring (202) arranged inside the mounting box (201), a mounting frame (203) arranged on the first spring (202), a cleaning assembly (204) slidably arranged in the mounting frame (203), and a connecting rope (205) arranged on the cleaning assembly (204). The mounting box (201) covers the outside of the impurities on the inner wall of the furnace, the cleaning assembly (204) abuts against the inner wall of the furnace under the elastic force of the first spring (202), and the connecting rope (205) is pulled by means of the holding assembly (102), so that the cleaning assembly (204) slides inside the mounting box (201), so as to clean the impurities on the inner wall of the furnace.

Description

A furnace interior dirt cleaning device Technical Field

[0001] This invention relates to the technical field of furnace cleaning, and more particularly to a device for cleaning internal dirt in a furnace. Background Technology

[0002] Internal furnace cleaning is a crucial part of power plant boiler maintenance, directly impacting combustion efficiency and safe operation. Currently, boiler cleaning primarily employs chemical cleaning methods, using chemical agents to dissolve and remove scale and carbon deposits from the furnace. While chemical cleaning is effective for quickly and efficiently cleaning the furnace walls, it cannot penetrate stubborn debris, resulting in incomplete cleaning. In such cases, manual scraping is necessary. Existing scrapers directly press against the furnace wall, and the pressure between the scraper and the furnace wall depends entirely on the operator, which can easily damage the furnace wall. Therefore, this invention provides a furnace internal scale cleaning device.

[0003] Summary of the Invention

[0004] In view of the problems with cleaning the internal dirt of existing furnaces, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a furnace interior dirt cleaning device that facilitates the cleaning of stubborn impurities inside the furnace while avoiding damage to the furnace interior wall.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a furnace interior dirt cleaning device, characterized in that it includes,

[0007] A support unit, the support unit including a mounting tube, a holding assembly disposed at the end of the mounting tube; and,

[0008] The cleaning unit includes a mounting box disposed at the other end of the mounting tube, a spring disposed inside the mounting box, a mounting bracket disposed on the spring, a cleaning component slidably disposed in the mounting bracket, and a connecting rope disposed on the cleaning component.

[0009] The mounting tube communicates with the mounting box, and the connecting rope passes through the mounting tube and connects to the gripping assembly.

[0010] As a preferred embodiment of the furnace interior dirt cleaning device of the present invention, the holding assembly includes an extension tube disposed at the end of the mounting tube, a handle slidably disposed in the extension tube, and a top plate disposed at the end of the extension tube.

[0011] One end of the handle is located inside the extension tube, and one end of the connecting rope is fixed to the handle.

[0012] As a preferred embodiment of the furnace interior dirt cleaning device of the present invention, the cleaning component includes a slide groove disposed on the side of the mounting frame, a mounting plate slidably disposed in the slide groove, a scraper disposed on the mounting plate, and an elastic rope disposed between the mounting plate and the mounting box.

[0013] The connecting rope is connected to the mounting plate, and the connecting rope slides through the top of the mounting frame.

[0014] As a preferred embodiment of the furnace interior dirt cleaning device of the present invention, the opening end of the mounting box and the sliding groove are both arc-shaped, and the sliding groove is coaxial with the opening end of the mounting box.

[0015] The mounting bracket is equipped with a balancing frame.

[0016] As a preferred embodiment of the furnace interior dirt cleaning device of the present invention, it further includes a telescopic unit, which is located between the mounting pipe and the extension pipe;

[0017] The telescopic unit includes a fixed tube disposed at the end of the mounting tube, a telescopic tube disposed at the end of the extension tube and slidably inserted into the fixed tube, a fixing component disposed between the fixed tube and the telescopic tube, a connecting component disposed in the fixed tube, and a snap-fit ​​component disposed in the telescopic tube.

[0018] As a preferred embodiment of the furnace interior dirt cleaning device of the present invention, the fixing component includes a limiting frame disposed inside the fixing tube, a threaded rod threaded in the fixing tube, and a handle two disposed at the end of the threaded rod.

[0019] The telescopic tube is provided with a groove and multiple fixing holes are provided at the bottom of the groove;

[0020] The limiting bracket is slidably inserted into the groove, and the threaded rod is engaged with the fixing hole;

[0021] The bottom of the threaded rod slides through the limiting frame and engages with the snap-fit ​​assembly;

[0022] The connecting rope is broken into rope body one and rope body two. Rope body one cooperates with the connecting assembly, and rope body two cooperates with the snap-fit ​​assembly.

[0023] As a preferred embodiment of the furnace interior dirt cleaning device of the present invention, the connecting assembly includes a fixing plate disposed in the fixing pipe, a connecting plate slidably disposed in the fixing plate, a plurality of fixing grooves disposed on the connecting plate, and a spring two disposed between the end of the connecting plate and the fixing plate.

[0024] The rope is located in the mounting tube and is connected to the connecting plate.

[0025] As a preferred embodiment of the furnace interior dirt cleaning device of the present invention, the snap-fit ​​assembly includes an installation groove disposed in the groove and located at both ends of the plurality of fixing holes, a slider slidably disposed in the installation groove, a spring three disposed at the bottom of the slider, a fixing strip disposed at the bottom of the two spring three, and a plurality of fixing posts disposed at the bottom of the fixing strip.

[0026] The fixing column mates with the fixing groove;

[0027] The bottom of the threaded rod mates with the fixing bar;

[0028] The second rope is located in the extension tube and is connected to the fixing strip.

[0029] In a preferred embodiment of the furnace interior dirt cleaning device of the present invention, the plurality of fixing holes, the plurality of fixing grooves and the plurality of fixing columns are distributed at equal intervals, and the interval between each adjacent pair is equal.

[0030] As a preferred embodiment of the furnace interior dirt cleaning device of the present invention, wherein: one of the mounting slots is provided with a spring four, and the spring four is connected to the slider.

[0031] The beneficial effects of the present invention are as follows: by covering the outside of the debris on the inner wall of the furnace with the mounting box, the cleaning component abuts against the inner wall of the furnace under the elastic force of the spring, and by pulling the connecting rope of the holding component, the cleaning component slides inside the mounting box, thereby cleaning the impurities on the inner wall of the furnace, which solves the problem that the scraper can easily damage the inner wall of the furnace. Attached Figure Description

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

[0033] Figure 1 is a schematic diagram of the overall structure of the furnace interior dirt cleaning device of the present invention.

[0034] Figure 2 is a schematic diagram of the holding component structure of the furnace internal dirt cleaning device of the present invention.

[0035] Figure 3 is a schematic diagram of the handle installation structure of the furnace interior dirt cleaning device of the present invention.

[0036] Figure 4 is a schematic diagram of the internal structure of the mounting box of the furnace interior dirt cleaning device of the present invention.

[0037] Figure 5 is a schematic diagram of the telescopic unit structure of the furnace interior dirt cleaning device of the present invention.

[0038] Figure 6 is an enlarged view of region A in Figure 5.

[0039] Figure 7 is a schematic diagram of the connection components of the furnace interior dirt cleaning device of the present invention.

[0040] Figure 8 is a schematic diagram of the snap-fit ​​assembly structure of the furnace interior dirt cleaning device of the present invention.

[0041] In the diagram: 100, Support unit; 101, Mounting tube; 102, Holding assembly; 200, Cleaning unit; 201, Mounting box; 202, Spring 1; 203, Mounting bracket; 204, Cleaning assembly; 205, Connecting rope; 102a, Extension tube; 102b, Handle 1; 102c, Top plate; 204a, Slide groove; 204b, Mounting plate; 204c, Scraper; 204d, Elastic rope; 203a, Balance frame; 300, Telescopic unit; 301, Fixed tube; 302, Telescopic tube; 30 3. Fixing component; 304. Connecting component; 305. Snap-fit ​​component; 303a. Limiting bracket; 303b. Threaded rod; 303c. Handle II; 302a. Groove; 302b. Fixing hole; 205a. Rope I; 205b. Rope II; 304a. Fixing plate; 304b. Connecting plate; 304c. Fixing groove; 304d. Spring II; 305a. Mounting groove; 305b. Slider; 305c. Spring III; 305d. Fixing strip; 305e. Fixing post; 305f. Spring IV. Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0045] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0046] Example 1, referring to Figures 1-4, is the first embodiment of the present invention, which provides a furnace interior dirt cleaning device, which includes a support unit 100 and a cleaning unit 200.

[0047] The support unit 100 includes a mounting tube 101 and a holding assembly 102 disposed at the end of the mounting tube 101.

[0048] The cleaning unit 200 includes a mounting box 201 disposed at the other end of the mounting tube 101, a spring 202 disposed inside the mounting box 201, a mounting bracket 203 disposed on the spring 202, a cleaning component 204 slidably disposed in the mounting bracket 203, and a connecting rope 205 disposed on the cleaning component 204. There are multiple springs 202, which are distributed at the four corners on the back of the mounting bracket 203. In the initial state, the end of the cleaning component 204 extends out of the mounting box 201.

[0049] The mounting tube 101 and the mounting box 201 are connected, and the connecting rope 205 passes through the mounting tube 101 and is connected to the holding assembly 102.

[0050] Furthermore, the holding assembly 102 includes an extension tube 102a disposed at the end of the mounting tube 101, a handle 102b slidably disposed in the extension tube 102a, and a top plate 102c disposed at the end of the extension tube 102a; the end of the handle 102b is located inside the extension tube 102a, and one end of the connecting rope 205 is fixed to the handle 102b. By moving the handle 102b, the connecting rope 205 can be pulled, thereby pulling the cleaning assembly 204 and causing the cleaning assembly 204 to move on the mounting bracket 203.

[0051] Furthermore, the cleaning component 204 includes a groove 204a disposed on the side of the mounting bracket 203, a mounting plate 204b slidably disposed in the groove 204a, a scraper 204c disposed on the mounting plate 204b, and an elastic rope 204d disposed between the mounting plate 204b and the mounting box 201.

[0052] The connecting rope 205 is connected to the mounting plate 204b, and the connecting rope 205 slides through the top of the mounting bracket 203.

[0053] Furthermore, the opening end of the mounting box 201 and the slide 204a are both arc-shaped, and the slide 204a is coaxial with the opening end of the mounting box 201; the mounting frame 203 is provided with a balance frame 203a, and the arc diameter of the opening end of the mounting box 201 is equal to the diameter of the inner wall of the furnace. When the opening end of the mounting box 201 abuts against the inner wall of the furnace, the scraper 204c is squeezed and compressed in the mounting box 201, and abuts against the inner wall of the furnace under the elastic force of the spring 202, thereby protecting the inner wall of the furnace and preventing the inner wall of the furnace from being scratched by the forceful squeezing of the scraper 204c.

[0054] In the initial state, the scraper 204c is located at the bottom of the chute 204a under the action of the elastic rope 204d and close to the bottom of the mounting box 201. At the same time, the scraper 204c and the balance frame 203a extend out of the mounting box 201. The space between the balance frame 203a and the scraper 204c is the range in which the scraper 204c can move and scrape, which facilitates accurate positioning of the impurities inside the furnace. Covering the impurity position can quickly complete the positioning. At the same time, the balance frame 203a and the scraper 204c work together to improve the balance force of the mounting frame 203 under compression.

[0055] During use, the scraper 204c and the balance frame 203a are pressed against the inner wall of the furnace, and the top plate 102c is pressed against the body to compress the balance frame 203a and the scraper 204c into the mounting box 201, so that the mounting box 201 is pressed against the inner wall of the furnace, and the scraper 204c is also pressed against the inner wall of the furnace. Then, the handle 102b is pulled to pull the connecting rope 205 to pull the mounting plate 204b, so that the scraper 204c slides in the mounting box 201 and scrapes away impurities inside the furnace as it moves. When the scraper 204c moves, it will pull the elastic rope 204d. When the scraping operation is finished, the handle 102b is released, and the scraper 204c returns to the initial position under the elastic force of the elastic rope 204d. At the same time, the handle 102b also returns under the pull of the connecting rope 205, making it convenient for the next scraping operation.

[0056] Example 2, referring to Figures 5 and 6, is the second embodiment of the present invention. This embodiment differs from the first embodiment in that it further includes a telescopic unit 300, which is located between the mounting tube 101 and the extension tube 102a. The telescopic unit 300 includes a fixed tube 301 disposed at the end of the mounting tube 101, a telescopic tube 302 disposed at the end of the extension tube 102a and slidably inserted into the fixed tube 301, a fixing component 303 disposed between the fixed tube 301 and the telescopic tube 302, a connecting component 304 disposed in the fixed tube 301, and a snap-fit ​​component 305 disposed in the telescopic tube 302.

[0057] Furthermore, the fixing component 303 includes a limiting frame 303a disposed inside the fixing tube 301, a threaded rod 303b threaded in the fixing tube 301, and a handle 303c disposed at the end of the threaded rod 303b; the threaded rod 303b is rotated by the handle 303c, thereby extending or inserting into the fixing tube 301.

[0058] The telescopic tube 302 has a groove 302a and multiple fixing holes 302b at the bottom of the groove 302a. The limiting bracket 303a is slidably inserted into the groove 302a. The limiting bracket 303a can restrict the rotation of the telescopic tube 302, ensuring that the telescopic tube 302 can only extend and retract relative to the fixed tube 301. The threaded rod 303b cooperates with the fixing hole 302b. By controlling the threaded rod 303b to insert into the fixing hole 302b, the telescopic tube 302 can be fixed, so that the telescopic tube 302 and the fixed tube 301 remain fixed and cannot extend or retract. The height of the mounting box 201 can be adjusted to clean impurities at different locations on the inner wall of the furnace.

[0059] The bottom of the threaded rod 303b slides through the limiting bracket 303a and engages with the snap-fit ​​component 305; after the bottom of the threaded rod 303b passes through the fixing hole 302b, it can press the snap-fit ​​component 305, so that the snap-fit ​​component 305 engages with the connecting component 304.

[0060] Furthermore, the connecting rope 205 is broken into rope body 1 205a and rope body 205b. Rope body 1 205a cooperates with the connecting component 304, and rope body 205b cooperates with the snap-fit ​​component 305. When the snap-fit ​​component 305 is fixed in place with the connecting component 304, rope body 1 205a and rope body 205b can be connected. At this time, the connecting rope 205 can be pulled again by the control handle 102b, thereby controlling the movement of the scraper 204c to clean the inner wall of the boiler.

[0061] The remaining structure is the same as that in Example 1.

[0062] The process is as follows: Adjust the extension distance of the telescopic tube 302 according to the height of the impurities in the inner wall of the furnace, thereby changing the height of the mounting box 201 to facilitate the cleaning of impurities. First, rotate the threaded rod 303b to separate it from the fixing hole 302b. At this time, control the telescopic tube 302 to slide along the fixing tube 301 to adjust the height of the mounting box 201. After the height of the mounting box 201 is adjusted, reverse the threaded rod 303b again to insert it into the fixing hole 302b to fix the telescopic tube 302. At the same time, control the threaded rod 303b to pass through the fixing hole 302b and squeeze the clamping component 305 to fix it to the connecting component 304. Connect the first rope 205a and the second rope 205b. Then, cover the outside of the impurities with the mounting box 201 and squeeze the scraper 204c to retract it into the mounting box 201. Then move the handle 102b to pull the connecting rope 205, thereby controlling the scraper 204c to move and scrape off the impurities.

[0063] Example 3, referring to Figures 7 and 8, is the third embodiment of the present invention. This embodiment differs from the second embodiment in that: the connecting component 304 includes a fixing plate 304a disposed in the fixing tube 301, a connecting plate 304b slidably disposed in the fixing plate 304a, a plurality of fixing grooves 304c disposed on the connecting plate 304b, and a second spring 304d disposed between the end of the connecting plate 304b and the fixing plate 304a; the first rope 205a is located in the mounting tube 101 and connected to the connecting plate 304b, wherein the second spring 304d can keep the position of the connecting plate 304b from sliding freely in the fixing tube 301, and the connecting plate 304b remains stationary relative to the fixing tube 301 when not pulled by external force.

[0064] Furthermore, the snap-fit ​​assembly 305 includes a mounting groove 305a disposed in the recess 302a and located at both ends of a plurality of fixing holes 302b, a slider 305b slidably disposed in the mounting groove 305a, a spring 305c disposed at the bottom of the slider 305b, a fixing strip 305d disposed at the bottom of the two springs 305c, and a plurality of fixing posts 305e disposed at the bottom of the fixing strip 305d; the fixing posts 305e cooperate with the fixing groove 304c; the fixing posts 305e are inserted into the fixing groove 304c, thus... This fixes the fixing strip 305d to the connecting plate 304b, and the bottom of the threaded rod 303b engages with the fixing strip 305d. In the initial state, the fixing strip 305d moves away from the connecting plate 304b under the elastic force of the spring 305c, at which point the fixing post 305e disengages from the fixing groove 304c. When the threaded rod 303b moves down, it can compress the fixing strip 305d. While stretching the spring 305c, it controls the fixing post 305e to insert into the fixing groove 304c, thus fixing the fixing strip 305d to the connecting plate 304b.

[0065] Rope body 205b is located in extension tube 102a and is connected to fixing strip 305d. When fixing strip 305d is fixed to connecting plate 304b, rope body 1 205a and rope body 205b are essentially reconnected. At this time, control handle 102b moves, firstly driving rope body 205b to pull fixing strip 305d to move. At the same time, fixing strip 305d controls connecting plate 304b to move. Finally, control rope body 1 205a to move and connect scraper 204c to move for scraping operation. The extension adjustment of telescopic tube 302 will not affect the movement of scraper 204c.

[0066] Furthermore, one of the mounting slots 305a is provided with a spring 305f, which is connected to the slider 305b. The spring 305f can keep the position of the fixing strip 305d from sliding freely in the telescopic tube 302. When not pulled by external force, the fixing strip 305d remains stationary relative to the telescopic tube 302.

[0067] Furthermore, the multiple fixing holes 302b, multiple fixing slots 304c, and multiple fixing posts 305e are all evenly spaced, and the interval between each adjacent pair is equal. When the threaded rod 303b passes through the fixing hole 302b and is pressed against the fixing strip 305d, the fixing post 305e can be inserted into the fixing slot 304c. When the telescopic tube 302 extends along the fixing tube 301 for adjustment, the fixing strip 305d moves the same distance with the telescopic tube 302. Some of the fixing posts 305e can still be inserted into some of the fixing slots 304c, thus achieving a fixed connection between the fixing strip 305d and the connecting plate 304b, thereby connecting the first rope body 205a and the second rope body 205b.

[0068] In the initial state, the scraper 204c is close to the bottom of the mounting box 201 under the action of the elastic rope 204d. The connecting plate 304b remains stationary relative to the fixed tube 301, and the fixing strip 305d remains stationary relative to the telescopic tube 302. The relative position between the fixing post 305e and the fixing groove 304c will not deviate, ensuring that the fixing post 305e can be smoothly inserted into the fixing groove 304c. At the same time, after pulling the handle 102b to control the scraper 204c to move and clean, the handle 102b is released. The connecting plate 304b and the fixing strip 305d return to the initial state under the action of the spring 2 304d and the spring 4 305f, which facilitates pulling and cleaning again. At the same time, after the threaded rod 303b is controlled to leave the fixing hole 302b and the telescopic tube 302 is adjusted, the fixing post 305e can still be smoothly inserted into the fixing groove 304c.

[0069] The remaining structure is the same as that in Example 2.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A furnace interior dirt cleaning device, characterized in that: include, A support unit (100), the support unit (100) including a mounting tube (101), a holding assembly (102) disposed at the end of the mounting tube (101); and, The cleaning unit (200) includes a mounting box (201) disposed at the other end of the mounting tube (101), a spring (202) disposed inside the mounting box (201), a mounting bracket (203) disposed on the spring (202), a cleaning component (204) slidably disposed in the mounting bracket (203), and a connecting rope (205) disposed on the cleaning component (204). The mounting tube (101) communicates with the mounting box (201), and the connecting rope (205) passes through the mounting tube (101) and connects to the gripping assembly (102).

2. The furnace interior dirt cleaning device according to claim 1, characterized in that: The holding assembly (102) includes an extension tube (102a) disposed at the end of the mounting tube (101), a handle (102b) slidably disposed in the extension tube (102a), and a top plate (102c) disposed at the end of the extension tube (102a). The end of the handle (102b) is located inside the extension tube (102a), and one end of the connecting rope (205) is fixed to the handle (102b).

3. The furnace interior dirt cleaning device according to claim 2, characterized in that: The cleaning component (204) includes a groove (204a) disposed on the side of the mounting bracket (203), a mounting plate (204b) slidably disposed in the groove (204a), a scraper (204c) disposed on the mounting plate (204b), and an elastic cord (204d) disposed between the mounting plate (204b) and the mounting box (201); The connecting rope (205) is connected to the mounting plate (204b), and the connecting rope (205) slides through the top of the mounting bracket (203).

4. The furnace interior dirt cleaning device according to claim 3, characterized in that: The opening end of the mounting box (201) and the sliding groove (204a) are both arc-shaped, and the sliding groove (204a) is coaxial with the opening end of the mounting box (201). The mounting bracket (203) is provided with a balance bracket (203a).

5. The furnace interior dirt cleaning device according to claim 3, characterized in that: It also includes a telescopic unit (300) located between the mounting tube (101) and the extension tube (102a); The telescopic unit (300) includes a fixed tube (301) disposed at the end of the mounting tube (101), a telescopic tube (302) disposed at the end of the extension tube (102a) and slidably inserted into the fixed tube (301), a fixing component (303) disposed between the fixed tube (301) and the telescopic tube (302), and a connecting component (303) disposed in the fixed tube (301). The connector (304) and the snap-fit ​​connector (305) disposed in the telescopic tube (302).

6. The furnace interior dirt cleaning device according to claim 5, characterized in that: The fixing component (303) includes a limiting frame (303a) disposed inside the fixing tube (301), a threaded rod (303b) threaded in the fixing tube (301), and a handle (303c) disposed at the end of the threaded rod (303b). The telescopic tube (302) is provided with a groove (302a) and a plurality of fixing holes (302b) are provided at the bottom of the groove (302a); The limiting bracket (303a) is slidably inserted into the groove (302a), and the threaded rod (303b) is engaged with the fixing hole (302b); The bottom of the threaded rod (303b) slides through the limiting frame (303a) and engages with the snap-fit ​​assembly (305); The connecting rope (205) is broken into rope body one (205a) and rope body two (205b). Rope body one (205a) cooperates with the connecting component (304), and rope body two (205b) cooperates with the snap-fit ​​component (305).

7. The furnace interior dirt cleaning device according to claim 6, characterized in that: The connecting assembly (304) includes a fixing plate (304a) disposed in the fixing tube (301), a connecting plate (304b) slidably disposed in the fixing plate (304a), a plurality of fixing grooves (304c) disposed on the connecting plate (304b), and a second spring (304d) disposed between the end of the connecting plate (304b) and the fixing plate (304a); The first rope (205a) is located in the mounting tube (101) and is connected to the connecting plate (304b).

8. The furnace interior dirt cleaning device according to claim 7, characterized in that: The snap-fit ​​assembly (305) includes a mounting groove (305a) disposed in the groove (302a) and located at both ends of the plurality of fixing holes (302b), a slider (305b) slidably disposed in the mounting groove (305a), a spring three (305c) disposed at the bottom of the slider (305b), a fixing strip (305d) disposed at the bottom of the two spring three (305c), and a plurality of fixing posts (305e) disposed at the bottom of the fixing strip (305d); The fixing post (305e) mates with the fixing groove (304c); The bottom of the threaded rod (303b) mates with the fixing strip (305d); The second rope (205b) is located in the extension tube (102a) and is connected to the fixing strip (305d).

9. The furnace interior dirt cleaning device according to claim 8, characterized in that: The plurality of fixing holes (302b), the plurality of fixing slots (304c), and the plurality of fixing posts (305e) are all equally spaced, and the interval between any two adjacent posts is equal.

10. The furnace interior dirt cleaning device according to claim 9, characterized in that: One of the mounting slots (305a) is provided with a spring four (305f), which is connected to the slider (305b).

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