A system for preventing eccentric wear of cleaning chain

By designing an anti-biased component to prevent the cleaning chain from being worn out by the cleaning chain in the boiler dry slag discharge system, the uneven wear and fall of the cleaning chain due to uneven ash slag falls is solved, and the normal operation and maintenance cost of the cleaning chain are achieved.

CN119774190AInactive Publication Date: 2025-04-08SHANGAN POWER PLANT OF HUANENG INT POWER CO LTD
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Patent Information

Application Number
CN202411753006.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-04-08
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Due to the adjustment of the unit load, the amount of boiler ash slag falls unevenly, resulting in different ash on both sides of the cleaning chain, resulting in excessive wear of one side of the cleaning chain and uneven chain length, which can easily lead to tilt of the scraper and the cleaning chain falling off.

Method used

A system for preventing the scavenging chain from being biased is designed, including a scavenging chain and a conveying frame, and the side walls of the conveying frame are provided with anti-bias components. The anti-biasing component adjusts the distribution of ash through structures such as the trachea, branch pipe and high-pressure nozzle to ensure that the force applied by the cleaning chains on both sides is the same and the length is the same, preventing tilt and falling off.

Benefits of technology

It effectively prevents the cleaning chain from being worn out and falling off, ensures the normal operation of the cleaning chain, reduces maintenance costs, and improves the reliability and efficiency of the system.

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Abstract

The present invention provides a system for preventing eccentric wear of a cleaning chain, and relates to the technical field of dry slag discharge cleaning chains, comprising: a cleaning chain and a conveying frame, wherein the cleaning chain is movably arranged in the conveying frame, an anti-eccentric component is arranged on the side wall of the conveying frame, the conveying frame performs position-limiting support on the cleaning chain, the conveying frame carries ash, the cleaning chain cleans and conveys the ash in a conveying pipe, and the anti-eccentric component corrects the cleaning chain during the process of the cleaning chain rotating to convey the ash, thereby preventing the cleaning chain from tilting and causing the cleaning chain to fall off, so that the cleaning chain can maintain normal operation and reduce maintenance costs.
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Description

Technical Field

[0001] The invention relates to the technical field of dry slag removal cleaning chains, and in particular to a system for preventing eccentric wear of cleaning chains. Background Art

[0002] The boiler dry slag discharge system has the advantages of no water resource consumption, no wastewater discharge, high comprehensive utilization value of dry slag, and is beneficial to environmental protection. It is widely used in coal-fired power station boilers. The boiler dry slag discharge system is mainly composed of bottom ash hopper, steel belt conveyor, cleaning chain, slag crusher, intermediate slag bin, bucket elevator, slag bin and other equipment.

[0003] The ash generated by boiler combustion falls from the boiler ash hopper onto the steel belt. The ash contains slag blocks and fine ash. The slag blocks and some fine ash are transported to the slag crusher at the rear through the steel belt. Most of the fine ash flows from the gap of the steel belt's supporting plate to the cleaning chain and is transported to the slag crusher by the cleaning chain.

[0004] The following problems exist at present: due to the load adjustment of the unit, the amount of ash falling in the front and back of the furnace is different, resulting in different amounts of ash on both sides of the cleaning chain, one side is large and the other side is small. This causes the cleaning chain on the side with large ash volume to wear more than the side with small ash volume. Over time, the length of the cleaning chain on the side with large ash volume is longer than that on the side with small ash volume, causing the scraper to tilt and the cleaning chain to fall off easily.

[0005] Therefore, in view of the above situation, it is urgent to develop a system to prevent eccentric wear of the cleaning chain, so as to overcome the shortcomings in current practical applications. Summary of the invention

[0006] The invention provides a system for preventing eccentric wear of a cleaning chain, so as to solve the defects in the prior art.

[0007] The invention provides a system for preventing eccentric wear of a cleaning chain, comprising a cleaning chain and a conveying frame, wherein the cleaning chain is movably arranged in the conveying frame, and an anti-eccentric wear component is arranged on the side wall of the conveying frame.

[0008] Preferably, the conveying frame includes a bottom plate and side plates, the side plates are fixedly provided on both sides of the top of the bottom plate, a plurality of rotating shafts are rotatably provided between the inward side walls of the two side plates, two spur gears are symmetrically provided on the rotating shaft, a transmission chain is meshed between the spur gears on the same side of the plurality of rotating shafts, a plurality of cleaning chains are provided between the two groups of transmission chains, a scraper is provided on the cleaning chain, a rubber pressure plate is provided at the bottom of the scraper, the rubber pressure plate is in contact with the bottom plate, and two groups of driving components are respectively provided on the two side plates.

[0009] Preferably, the driving assembly includes a motor, which is fixedly arranged at one end of the side plate, and a rotating shaft 2 is rotatably arranged between the inward side walls of the two side plates, and two spur gears 2 are symmetrically arranged on the rotating shaft 2. The driving end of the motor passes through the side plate and is transmission-connected to the rotating shaft 2, and the two spur gears 2 are respectively meshed with the two transmission chains for transmission.

[0010] Preferably, the anti-deviation component includes an air pipe, and the air pipe is respectively arranged on the outer sides of the two side panels, one end of the air pipe is respectively connected to an air supply source, a regulating valve is arranged between the air pipe and the air supply source, and a plurality of branch pipes are arranged on the air pipe, and the branch pipes are inserted on the side panels, and the air outlets of the branch pipes on both sides face the scraper and are provided with high-pressure nozzles.

[0011] Preferably, the anti-deviation component also includes an active cavity and a movable groove, an active cavity is opened in the side panel, a movable groove is opened on the side wall of the side panel corresponding to the active cavity, a gas rod 1 and a movable block are arranged in the active cavity, the telescopic end of the gas rod 1 is fixed to one side of the movable block, a support plate is fixedly arranged on the side of the movable block, the support plate extends from the movable groove to the outside of the side panel, a fixed frame is slidably arranged on the support plate, a gas rod 2 is arranged in the fixed frame, the telescopic end of the gas rod 2 is fixed to the movable block, and a spur gear 1 is rotatably arranged on one side of the fixed frame.

[0012] Preferably, a plurality of length detection devices are respectively provided on the side plates corresponding to both sides of the scraper, and the plurality of length detection devices are electrically connected to the air supply source and the high-pressure nozzle respectively.

[0013] Preferably, it also includes:

[0014] Speed ​​detection module, used to measure the running speed of the transmission chain;

[0015] Power detection module, used to measure the real-time output power of the motor;

[0016] A calculation module 1 is used to calculate the effective output power of the motor based on the running speed of the transmission chain;

[0017] An alarm module, used for issuing an alarm;

[0018] A processing module, used for comparing the effective output power of the motor obtained by the calculation module 1 with the real-time output power of the motor;

[0019] The control module controls the alarm module to sound an alarm and control the motor to stop working when the real-time output power of the motor is greater than or equal to the effective output power of the motor. When the real-time output power of the motor is less than the effective output power of the motor, the motor works normally.

[0020] Preferably, the calculation module 1 calculates based on the following formula 1:

[0021]

[0022] P is the effective output power of the motor 7, k is the reserve coefficient of the motor 7 power, v is the running speed of the transmission chain 5, G1 is the gravity of the transmission chain 5 per meter, f1 is the friction coefficient between the transmission chain 5 and the spur gear 29, L1 is the horizontal section length of the bottom plate 21, L2 is the inclined section length of the bottom plate 21, E is the inclination coefficient, H1 is the height of the horizontal section of the bottom plate 21, G2 is the gravity of the ash per meter, f3 is the external friction coefficient of the ash, x is the power coefficient, θ is the angle between the horizontal section and the inclined section of the bottom plate, H2 is the height of the side plate 22, D is the width of the bottom plate 21, ∈ is the comprehensive coefficient of the side pressure of the scraper 6 on the bottom plate 21 and the side plate 22, and μ is the transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the active cavity in the side wall provided by an embodiment of the present invention.

[0026] Reference numerals:

[0027] 1. Cleaning chain; 2. Conveying frame; 21. Bottom plate; 22. Side plate; 3. Rotating shaft one; 4. Spur gear one; 5. Transmission chain; 6. Scraper; 7. Motor; 8. Rotating shaft two; 9. Spur gear two; 10. Anti-bias component; 101. Air pipe; 102. Air supply source; 103. Regulating valve; 104. Branch pipe; 105. Movable chamber; 106. Moving groove; 107. Air rod one; 108. Moving block; 109. Air rod two; 110. Fixed frame; 111. Support plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] The present invention provides the following embodiments

[0031] Example 1

[0032] The embodiment of the present invention provides a system for preventing eccentric wear of a cleaning chain, such as Figure 1-Figure 2 As shown, it includes: a cleaning chain 1 and a conveying frame 2, the cleaning chain 1 is movably arranged in the conveying frame 2, and an anti-deviation component 10 is arranged on the side wall of the conveying frame 2.

[0033] The working principle and beneficial effects of the above technical solution are as follows: the conveying frame 2 provides limited support for the cleaning chain 1, the conveying frame 2 carries the ash, the cleaning chain 1 cleans and transports the ash in the conveying pipe, and the anti-bias component 10 evenly stacks the ash corresponding to the cleaning chains on both sides during the process of the cleaning chain 1 rotating to transport the ash, so that the cleaning chains on both sides exert the same force and have the same length, preventing the cleaning chain 1 from tilting and causing the cleaning chain 1 to fall off, so that the cleaning chain 1 can maintain normal operation and reduce maintenance costs.

[0034] Example 2

[0035] On the basis of Example 1, Figure 1-Figure 2 As shown, the conveying frame 2 includes a bottom plate 21 and side plates 22, the side plates 22 are fixedly arranged on both sides of the top of the bottom plate 21, and a plurality of rotating shafts 3 are rotatably arranged between the inner side walls of the two side plates 22, two spur gears 4 are symmetrically arranged on the rotating shaft 3, and a transmission chain 5 is meshed between the spur gears 4 on the same side of the plurality of rotating shafts 3, and a plurality of cleaning chains 1 are arranged between the two groups of the transmission chains 5, and a scraper 6 is arranged on the cleaning chain 1, and a rubber pressing plate is arranged at the bottom of the scraper 6, and the rubber pressing plate is in contact with the bottom plate 21, and two groups of driving components are respectively arranged on the two side plates 22;

[0036] The driving assembly includes a motor 7, which is fixedly arranged at one end of the side plate 22. A rotating shaft 8 is rotatably arranged between the inner side walls of the two side plates 22. Two spur gears 9 are symmetrically arranged on the rotating shaft 8. The driving end of the motor 7 passes through the side plate 22 and is transmission-connected to the rotating shaft 8. The two spur gears 9 are respectively meshed with the two transmission chains 5 for transmission.

[0037] The working principle and beneficial effects of the above technical solution are as follows: the side plate 22 supports the bottom plate 21, the bottom plate 21 carries the ash, the side plate 22 limits the ash and simultaneously supports the rotation of the multiple rotating shafts 3, the rotating shaft 3 is arranged in two layers on the side plate 22, the rotating shaft 3 fixes the two spur gears 4 thereon, so that the rotating shaft 3 and the two spur gears 4 rotate synchronously, the multiple spur gears 4 arranged in two layers open the two sets of transmission chains 5 closed at the head and tail, the two sets of transmission chains 5 rotate synchronously, the spur gears 4 mesh and transmit the transmission chains 5, the two transmission chains 5 fix the cleaning chain 1 in the middle, and the multiple cleaning chains 1 follow The two transmission chains 5 rotate synchronously, and the cleaning chain 1 fixes the scraper 6 by bolts, and the scraper 6 fixes the rubber pressure plate to prevent wear between the scraper 6 and the bottom plate 21, and also facilitates the replacement of the rubber pressure plate. The cleaning chain 1 drives the scraper 6 to move synchronously when following the two transmission chains 5 in a circular motion. The scraper 6 scrapes away the ash on the bottom plate 21, and the motor 7 drives the rotating shaft 2 8 to rotate between the two side plates 22 through the driving end. The rotating shaft 2 8 drives the two spur gears 2 9 thereon to rotate, and the two transmission chains 5 are driven to rotate through the meshing of the two spur gears 2 9, thereby driving the cleaning chain 1 and the scraper 6 to rotate, so as to scrape the ash to the next position.

[0038] Example 3

[0039] On the basis of Example 2, Figure 1-Figure 2 As shown, the anti-deflection component 10 includes an air pipe 101, and the air pipes 101 are respectively arranged on the outer sides of the two side panels 22, one end of the air pipe 101 is respectively connected to an air supply source 102, and a regulating valve 103 is arranged between the air pipe 101 and the air supply source 102, and a plurality of branch pipes 104 are arranged on the air pipe 101, and the branch pipes 104 are inserted on the side panels 22, and the air outlets of the branch pipes 104 on both sides face the scraper 6 and are provided with high-pressure nozzles.

[0040] The working principle and beneficial effects of the above technical solution are as follows: the two side plates 22 fix the two air pipes 101, the air pipes 101 and the side plates 22 fix and support multiple branch pipes 104, the two air supply sources 102 supply air to the two air pipes 101 respectively, the air pipes 101 input the gas into the branch pipes 104, the branch pipes 104 spray the gas through the high-pressure nozzles, and the gas sprayed by the high-pressure nozzles at both ends is used to blow and adjust the amount of ash at both ends of the scraper 6, so that the scraper 6 is balanced during the movement, thereby reducing the pressure on the transmission chain 5.

[0041] Example 4

[0042] On the basis of Example 3, Figure 1-Figure 2 As shown, a plurality of length detection devices are respectively provided on the side plates 22 corresponding to both sides of the scraper 6, and the plurality of length detection devices are respectively electrically connected to the air supply source 102 and the high-pressure nozzle.

[0043] The working principle and beneficial effects of the above technical solution are as follows: length detection devices are arranged on the side plates 22 on both sides of the cleaning chain 1. When the length detection device detects that there is a deviation in the length on both sides of the cleaning chain 1, it will send a signal to the controller in the length detection device, and the controller will open the regulating valve 103 on the longer side of the cleaning chain 1, and the air will enter the pipeline, and then enter the branch pipe 104, and be sprayed from the high-pressure nozzle of the branch pipe 104 to the scraper 6, blowing the ash on one side of the scraper 6 to the other side, thereby reducing the wear of the scraper 6 on this side, until the transmission chains 5 on both sides are equal in length and then the regulating valve 103 on this side is closed.

[0044] Example 5

[0045] On the basis of Example 4, Figure 1-Figure 2 As shown, the anti-bias component 10 also includes an active cavity 105 and a movable groove 106. The side panel 22 is provided with an active cavity 105, and a movable groove 106 is provided on the side wall of the side panel 22 corresponding to the active cavity 105. A gas rod 107 and a movable block 108 are arranged in the active cavity 105. The telescopic end of the gas rod 107 is fixed to one side of the movable block 108, and a support plate 111 is fixedly arranged on the side of the movable block 108. The support plate 111 extends from the movable groove 106 to the outside of the side panel 22, and a fixed frame 110 is slidably arranged on the support plate 111. A gas rod 2 109 is arranged in the fixed frame 110, and the telescopic end of the gas rod 2 109 is fixed to the movable block 108, and a spur gear 14 is rotatably arranged on one side of the fixed frame 110.

[0046] The working principle and beneficial effects of the above technical solution are as follows: an active cavity 105 is provided in the side plate 22 to limit the gas rod 107 and the moving block 108, the gas rod 107 pushes and pulls the moving block 108, the moving block 108 moves in the active cavity 105, and the moving block 108 drives the support plate 111, the gas rod 109 and the fixed frame 110 to move synchronously when moving, the support plate 111 slides and supports the gas rod 109, the fixed frame 110 protects the gas rod 109, and the fixed frame 110 supports the spur gear 1 4 is used for rotation limit, spur gear 1 4 rotates along with the transmission chain 5, spur gear 1 4 is used for guiding and limiting the transmission chain 5, when the high-pressure nozzle blows the ash on one side of the cleaning chain 1 to the other side, the lengths of the transmission chains 5 at both ends are still different, the gas rod 107 can move the spur gear 1 4 in the transmission direction of the transmission chain 5, so as to tighten the transmission chain 5, the gas rod 2 109 can adjust the connection position between the spur gear 4 and the transmission chain 5, and fine-tune the transportation direction angle of the transmission chain 5 for correction, which is convenient for correcting the transportation direction of the transmission chain 5.

[0047] Example 6

[0048] Based on the embodiment 5, the speed detection module is used to measure the running speed of the transmission chain 5;

[0049] A power detection module, used to measure the real-time output power of the motor 7;

[0050] A calculation module 1 is used to calculate the effective output power of the motor 7 based on the running speed of the transmission chain 5;

[0051] An alarm module, used for issuing an alarm;

[0052] A processing module, used for comparing the effective output power of the motor 7 obtained by the calculation module 1 with the real-time output power of the motor 7;

[0053] The control module controls the alarm module to sound an alarm and control the motor 7 to stop working when the real-time output power of the motor 7 is greater than or equal to the effective output power of the motor 7. When the real-time output power of the motor 7 is less than the effective output power of the motor 7, the motor 7 works normally.

[0054] The working principle and beneficial effects of the above technical solution are as follows: the speed detection module measures the running speed of the transmission chain 5, the power detection module measures the real-time output power of the motor 7, the calculation module calculates the effective output power of the motor 7 based on the running speed of the transmission chain 5, the alarm module is used to issue an alarm, and the processing module compares and processes the effective output power of the motor 7 obtained by the calculation module with the real-time output power of the motor 7. When the real-time output power of the motor 7 is greater than or equal to the effective output power of the motor 7, the control module controls the alarm module to issue an alarm and controls the motor 7 to stop working. When the real-time output power of the motor 7 is less than the effective output power of the motor 7, the motor 7 works normally.

[0055] Example 7

[0056] Based on Example 6, the calculation module 1 calculates based on the following formula 1:

[0057]

[0058] P is the effective output power of the motor 7, k is the reserve coefficient of the motor 7 power, v is the running speed of the transmission chain 5, G1 is the gravity of the transmission chain 5 per meter, f1 is the friction coefficient between the transmission chain 5 and the spur gear 29, L1 is the horizontal section length of the bottom plate 21, L2 is the inclined section length of the bottom plate 21, E is the inclination coefficient, H1 is the height of the horizontal section of the bottom plate 21, G2 is the gravity of the ash per meter, f3 is the external friction coefficient of the ash, x is the power coefficient, θ is the angle between the horizontal section and the inclined section of the bottom plate 21, H2 is the height of the side plate 22, D is the width of the bottom plate 21, ∈ is the comprehensive coefficient of the side pressure of the scraper 6 on the bottom plate 21 and the side plate 22, and μ is the transmission efficiency.

[0059] The working principle and beneficial effects of the above technical solution are as follows: the required transmission force of the transmission chain 5 in the process of scraping the ash is calculated by G1(f1L1+f1L2E+H1+G2L1+L2Ef2+f3xH21+sinθD+H1∈, the required transmission force of the transmission chain 5 after scraping the ash is calculated by G1(H1-f1L2), and the required transmission force of the transmission chain 5 after scraping the ash is calculated by The effective output power of motor 7 is calculated. When the real-time output power of motor 7 is greater than or equal to the effective output power of motor 7, the control module controls the alarm module to sound an alarm and control motor 7 to stop working. When the real-time output power of motor 7 is less than the effective output power of motor 7, motor 7 works normally.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A system for preventing eccentric wear of a cleaning chain, characterized in that: include: A cleaning chain (1) and a conveying frame (2), wherein the cleaning chain (1) is movably arranged in the conveying frame (2), and an anti-deflection component (10) is arranged on the side wall of the conveying frame (2).

2. A system for preventing eccentric wear of a cleaning chain according to claim 1, characterized in that: The conveying frame (2) comprises a bottom plate (21) and side plates (22), the side plates (22) being fixedly arranged on both sides of the top of the bottom plate (21), a plurality of rotating shafts (3) being rotatably arranged between the inner side walls of the two side plates (22), two spur gears (4) being symmetrically arranged on the rotating shaft (3), a transmission chain (5) being meshed between the spur gears (4) on the same side of the plurality of rotating shafts (3), a plurality of cleaning chains (1) being arranged between the two groups of the transmission chains (5), a scraper (6) being arranged on the cleaning chain (1), a rubber pressure plate being arranged at the bottom of the scraper (6), the rubber pressure plate being in contact with the bottom plate (21), and two groups of driving components being respectively arranged on the two side plates (22).

3. A system for preventing eccentric wear of a cleaning chain according to claim 2, characterized in that: The driving assembly comprises a motor (7), the motor (7) being fixedly arranged at one end of the side plate (22), a rotating shaft (8) being rotatably arranged between the inwardly facing side walls of the two side plates (22), two spur gears (9) being symmetrically arranged on the rotating shaft (8), a driving end of the motor (7) passing through the side plate (22) being transmission-connected to the rotating shaft (8), and the two spur gears (9) being respectively meshed with the two transmission chains (5) for transmission.

4. A system for preventing eccentric wear of a cleaning chain according to claim 3, characterized in that: The anti-deflection component (10) comprises an air pipe (101), the air pipe (101) is respectively arranged on the outer sides of the two side plates (22), one end of the air pipe (101) is respectively connected to an air supply source (102), a regulating valve (103) is arranged between the air pipe (101) and the air supply source (102), a plurality of branch pipes (104) are arranged on the air pipe (101), the branch pipes (104) are inserted on the side plates (22), the air outlets of the branch pipes (104) on both sides face the scraper (6) and are provided with high-pressure nozzles.

5. A system for preventing eccentric wear of a cleaning chain according to claim 4, characterized in that: The anti-deflection component (10) further comprises an active cavity (105) and a movable groove (106); the active cavity (105) is provided in the side plate (22); a movable groove (106) is provided on a side wall of the side plate (22) corresponding to the active cavity (105); a gas rod (107) and a movable block (108) are provided in the active cavity (105); a telescopic end of the gas rod (107) is fixed to one side of the movable block (108); and the movable block (108) is provided with a gas rod (107) and a movable block (108). A support plate (111) is fixedly provided on the side of (108), and the support plate (111) extends from the movable groove (106) to the outside of the side plate (22). A fixed frame (110) is slidably provided on the support plate (111), and a gas rod 2 (109) is provided in the fixed frame (110). The telescopic end of the gas rod 2 (109) is fixed to the movable block (108), and a spur gear 1 (4) is rotatably provided on one side of the fixed frame (110).

6. A system for preventing eccentric wear of a cleaning chain according to claim 5, characterized in that: A plurality of length detection devices are respectively arranged on the side plates (22) corresponding to both sides of the scraper (6), and the plurality of length detection devices are respectively electrically connected to the air supply source (102) and the high-pressure nozzle.

7. A system for preventing eccentric wear of a cleaning chain according to claim 6, characterized in that: Also includes: A speed detection module, used to measure the running speed of the transmission chain (5); A power detection module, used for measuring the real-time output power of the motor (7); A calculation module 1, used for calculating the effective output power of the motor (7) based on the running speed of the transmission chain (5); An alarm module, used for issuing an alarm; A processing module, used for comparing the effective output power of the motor (7) obtained by the calculation module 1 with the real-time output power of the motor (7); The control module controls the alarm module to sound an alarm when the real-time output power of the motor (7) is greater than or equal to the effective output power of the motor (7), and controls the motor (7) to stop working at the same time; when the real-time output power of the motor (7) is less than the effective output power of the motor (7), the motor (7) works normally.

8. A system for preventing eccentric wear of a cleaning chain according to claim 7, characterized in that: The calculation module 1 calculates based on the following formula 1: P is the effective output power of the motor (7), k is the reserve coefficient of the power of the motor (7), v is the running speed of the transmission chain (5), G1 is the weight of the transmission chain (5) per meter, f1 is the friction coefficient between the transmission chain (5) and the spur gear (9), L1 is the length of the horizontal section of the bottom plate (21), L2 is the length of the inclined section of the bottom plate (21), E is the inclination coefficient, H1 is the height of the horizontal section of the bottom plate (21), G2 is the weight of the ash per meter, f3 is the external friction coefficient of the ash, x is the dynamic coefficient, θ is the angle between the horizontal section and the inclined section of the bottom plate (21), H2 is the height of the side plate (22), D is the width of the bottom plate (21), ∈ is the comprehensive coefficient of the side pressure of the scraper (6) on the bottom plate (21) and the side plate (22), and μ is the transmission efficiency.