Coal bunker with mixed burning of sludge for preventing coal blocking and breaking

Abstract

This invention discloses a coal bunker for preventing coal blockage and interruption caused by co-firing sludge, comprising a bunker body assembly including a coal drop bunker and a coal feed cylinder; a scraping assembly including a rotating scraper, a power component, and a first transmission component; and a rapping assembly including a rapping component, a rotating component, a second transmission component, an actuating protrusion, and a limiting component. The beneficial effects of this invention are: by incorporating the scraping assembly to scrape the inner wall of the coal drop bunker, preventing coal blockage and interruption during coal conveying; and by incorporating the rapping assembly, which activates when the coal conveying volume increases, working in conjunction with the scraping assembly to improve the coal conveying efficiency of the raw coal bunker, eliminating the need for manual knocking and cleaning, improving equipment safety, reducing production input and maintenance costs, stabilizing boiler combustion, saving fuel costs, and freeing the power plant from the constraints of coal type and quality changes, thus reducing operating load fluctuations. The system is tightly sealed, reducing the need for opening the bunker for cleaning and improving the on-site working environment.

Description

Technical Field

[0001] This invention relates to the field of coal bunker anti-blocking research, and in particular to a coal bunker with sludge co-firing to prevent coal blockage and coal breakage. Background Technology

[0002] Thermal power plants are a common form of electricity generation that uses fossil fuels to produce steam, which drives steam turbines to generate electricity. The fuels used in thermal power plants are typically coal, crude oil, and natural gas, with coal being one of the most important fuels.

[0003] The combustion process in thermal power plants requires a large amount of coal. To ensure the normal operation of the power plant, this coal needs to be supplied to the combustion system at a certain rate. The storage and transportation of coal requires some equipment, one of which is the coal hopper.

[0004] Coal chutes play a crucial role in thermal power plants. As a temporary coal storage device, they facilitate coal storage and ensure a stable coal supply to the combustion system. However, coal blockages and supply disruptions can occur in the coal chutes, which can have significant adverse effects on the combustion system.

[0005] When coal in the coal chute cannot flow, coal blockage and interruption occur. In existing coal chute systems, the increased viscosity of the coal due to the mixing of sludge during combustion frequently causes stubborn coal blockage and interruption, seriously threatening the stable operation of the unit and affecting the power plant's production. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0007] In view of the problems existing in the prior art, the present invention is proposed.

[0008] Therefore, the technical problem to be solved by the present invention is that coal hoppers in the prior art are prone to coal blockage and coal shortage.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a coal bin for preventing coal blockage and coal interruption caused by sludge co-firing, which includes a bin body assembly, the bin body assembly including a coal drop bin and a coal inlet cylinder, the coal inlet cylinder being disposed on the side wall of the coal drop bin, a top cover being disposed on one side of the coal drop bin, and the coal drop bin being connected to the coal inlet cylinder.

[0010] A scraping assembly, located on one side of the coal bin assembly, includes a rotating scraper, a power component, and a first transmission component. The rotating scraper is disposed within the internal cavity of the coal bin, the power component is disposed on the side wall of the coal bin, and the transmission component connects the rotating scraper and the power component.

[0011] A rapping assembly is disposed on one side of the scraping assembly and includes a rapping component, a rotating component, a second transmission component, an action protrusion, and a limiting component. The rapping component is connected to the rotating component, the rotating component is connected to the second transmission component, the action protrusion is disposed on the inner side wall of the coal drop chamber, and the limiting component is connected to the rotating component.

[0012] As a preferred embodiment of the sludge-blended coal bunker for preventing coal blockage and coal shortage described in this invention, the first transmission component includes a transmission main shaft, a first pulley, a second pulley, a transmission belt, and a transmission auxiliary shaft. The first pulley, the second pulley, and the transmission belt are interconnected. One end of the transmission main shaft is connected to a rotating scraper, and the other end is connected to the second pulley. The transmission auxiliary shaft is connected to the first pulley.

[0013] As a preferred embodiment of the coal bunker for preventing coal blockage and coal breakage caused by sludge co-firing according to the present invention, wherein: one end of the rotating scraper is close to the side wall of the coal drop bunker, and the thickness of one side of the rotating scraper is greater than the thickness of the opposite side, and the rotating scraper is provided with an arc-shaped groove on the side of the rotating scraper near the coal drop direction.

[0014] As a preferred embodiment of the sludge-blended coal bunker for preventing coal blockage and coal shortage described in this invention, the second transmission component includes a transmission box, a drive gear, a driven gear, and a transmission shaft. The transmission box is connected to the main transmission shaft. The drive gear is disposed in the inner cavity of the transmission box and connected to the main transmission shaft. The transmission shaft is connected to the side wall of the inner cavity of the transmission box. The driven gear is connected to the transmission shaft, and the drive gear and the driven gear are meshed together.

[0015] The second transmission component further includes a first transmission gear and a second transmission gear. The first transmission gear is disposed on the side of the driven gear and connected to the transmission shaft, and the second transmission gear is connected to the rotating component.

[0016] As a preferred embodiment of the sludge-blended coal bunker for preventing coal blockage and coal shortage described in this invention, the rotating component includes a rotating collar and a rotating bar. The rotating collar is disposed on one side of the transmission main shaft, and one end of the rotating collar is connected to the second transmission gear. The rotating bar is disposed on the side wall of the rotating collar.

[0017] As a preferred embodiment of the coal bunker for preventing coal blockage and coal shortage caused by co-firing sludge according to the present invention, the vibrating element is disposed at one end of the rotating element and includes a vibrating wheel, a vibrating base and an auxiliary spring. The vibrating base is disposed at one end of the rotating bar. The vibrating wheel is connected to the vibrating base. The auxiliary spring is disposed in the auxiliary groove on the side wall of the vibrating base and connects the vibrating wheel and the vibrating base.

[0018] As a preferred embodiment of the coal bunker for preventing coal blockage and coal shortage caused by co-firing sludge according to the present invention, the limiting member connects the rotating member and the rotating scraper, and includes a displacement rod, a connecting plate, a pushing block, a force-bearing block and a connecting spring. One end of the displacement rod is connected to the outer wall of the rotating collar, and the force-bearing block is connected to the other end of the displacement rod. The connecting plate is connected to the transmission main shaft, and the connecting plate has a cavity inside. The pushing block, the force-bearing block and the connecting spring are disposed in the cavity. The pushing block is disposed on one side of the force-bearing block and is connected to the rotating scraper. The connecting spring is disposed on the side wall of the pushing block.

[0019] As a preferred embodiment of the coal bunker for preventing coal blockage and coal shortage caused by sludge co-firing according to the present invention, wherein: the connecting spring connects the pushing block and the fixed block disposed in the inner cavity of the connecting plate, and the side walls of the pushing block and the force-bearing block are provided with inclined surfaces, and the two inclined surfaces fit together.

[0020] As a preferred embodiment of the coal bunker for preventing coal blockage and coal shortage caused by sludge co-firing according to the present invention, the power component includes a power base, a power motor, an output gear, and a conversion gear. The power base is located on the outer wall of the coal bunker, the power motor is located on one side of the power base, the output end of the power motor is connected to the output gear, the conversion gear is located on one side of the output gear, and the output gear and the conversion gear mesh with each other.

[0021] As a preferred embodiment of the coal bunker for preventing coal blockage and coal shortage caused by sludge co-firing according to the present invention, the first transmission component further includes a protective cover and a fastening shaft. A first pulley, a second pulley, and a transmission belt are disposed in the inner cavity of the protective cover. The fastening shaft is disposed on one side of the transmission belt, and both ends of the fastening shaft are connected to the inner side wall of the protective cover.

[0022] The beneficial effects of this invention are as follows: By incorporating a scraping component to scrape the inner wall of the coal chute, blockages and coal supply interruptions during the coal conveying process are prevented. Simultaneously, a rapping component is installed; when the coal conveying volume increases, the rapping component engages, working in conjunction with the scraping component to improve the coal conveying efficiency of the raw coal chute, eliminating the need for manual knocking and cleaning, enhancing equipment safety, reducing production input and maintenance costs, stabilizing boiler combustion, saving fuel costs, and freeing the power plant from the constraints of coal type and quality variations, thus reducing fluctuations in operating load. The system is tightly sealed, reducing the need for opening the chute for cleaning and improving the on-site working environment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. 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. Wherein:

[0024] Figure 1 This is a schematic diagram of the overall device of the present invention.

[0025] Figure 2 This is a schematic diagram of the vibration component of the present invention.

[0026] Figure 3 This is a schematic diagram of the scraping component of the present invention.

[0027] Figure 4 This is a top view of the scraping component of the present invention.

[0028] Figure 5 This is a schematic diagram of the rotating component of the present invention.

[0029] Figure 6 This is a diagram of the second transmission component of the present invention.

[0030] Figure 7 This is a schematic diagram of the second transmission component of the present invention.

[0031] Figure 8 This is a schematic diagram of the limiting component of the present invention.

[0032] Figure 9 This is a schematic diagram of the vibrating element of the present invention. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] 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. Example 1

[0036] Reference Figure 1 , Figure 2 This is the first embodiment of the present invention. This embodiment provides a coal bin for preventing coal blockage and coal breakage caused by co-firing sludge, characterized in that it includes a bin body assembly 100, a scraping assembly 200, and a rapping assembly 300.

[0037] Specifically, the silo assembly 100 includes a coal hopper 101 and a coal feed duct 102. The coal feed duct 102 is located on the side wall of the coal hopper 101. A top cover 101a is provided on one side of the coal hopper 101 to keep the coal hopper 101 closed. The coal hopper 101 is connected to the coal feed duct 102. Coal enters the coal hopper 101 through the coal feed duct 102 and then enters the combustion boiler.

[0038] The scraping component 200 is located on one side of the silo assembly 100 and includes a rotary scraper 201, a power component 202, and a first transmission component 203. The rotary scraper 201 is located inside the cavity of the coal silo 101, the power component 202 is located on the side wall of the coal silo 101, and the transmission component 203 connects the rotary scraper 201 and the power component 202. Power is output through the power component 202 and transmitted to the rotary scraper 201 through the first transmission component 203, so that the rotary scraper 201 continuously scrapes the inner wall of the coal silo 101, causing the rotary scraper 201 and the coal silo 101 to move relative to each other, stirring the material in the entire silo and scraping the coal adhering to the inner wall of the silo away from the silo. This breaks the adhesion between the material and the inner wall of the coal silo, forming a full-area separation zone between the material and the silo wall, which can simultaneously achieve the effects of breaking arches and removing adhering materials.

[0039] Preferably, the rotary scraper 201 can be made of 40Cr steel, forged as a whole and then processed. After quenching and tempering, it has high strength and good toughness, ensuring the strength of the rotary scraper. The blade structure is designed to reduce running resistance.

[0040] The rapping assembly 300 is located on one side of the scraping assembly 200 and includes a rapping element 301, a rotating element 302, a second transmission element 303, an action protrusion 304, and a limiting element 305. The rapping element 301 is connected to the rotating element 302, and the rotating element 302 is connected to the second transmission element 303. The action protrusion is located on the inner wall of the coal drop chamber 101, and the limiting element 305 is connected to the rotating element 302. When the coal conveying workload increases, the rotating scraper 201 will encounter resistance due to the increased material volume. At the same time, other parts of the coal drop chamber 101 may adhere to the chamber wall due to the increased material volume, increasing the possibility of coal blockage. At this time, the limiting element 305 releases the limiting of the rapping element 301, and the rotating element 302 is activated through the second transmission element 303, causing the rapping element 301 to strike the chamber wall of the coal drop chamber 101, assisting the rotating scraper 201, reducing the adhesion between the material and the chamber wall, and preventing coal blockage even when the coal conveying volume increases.

[0041] As a preferred option, an observation door can be installed on the side wall of the coal hopper 101. The inside of the observation door fits snugly against the hopper wall, preventing coal from getting stuck. The seal uses a labyrinth seal with a modular design; the material itself is self-lubricating and requires no maintenance during normal operation.

[0042] In summary, by installing a scraping component to scrape away material from the walls of the coal hopper 101, the coal hopper 101 is prevented from becoming clogged due to material accumulation. Simultaneously, the rotating scraper 201 loosens and breaks up the material during rotation, reducing the adhesion between materials and making it easier for the coal to fall. Furthermore, the installation position and method of the rotating scraper 201 within the coal hopper 101 create a certain downward spiral force during rotation, allowing the material at the hopper outlet to be smoothly pushed to the next stage of equipment. When the coal conveying volume increases, the vibrating component 300 is activated to assist the rotating scraper 201, rhythmically tapping the entire hopper body to prevent material from adhering to the inner wall in other areas, further reducing the likelihood of coal blockage in the entire hopper. Example 2

[0043] Reference Figures 1-8 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0044] Specifically, the power component 202 includes a power base 202a, a power motor 202b, an output gear 202c, and a conversion gear 202d. The power base 202a is located on the outer wall of the coal hopper 101. The power motor 202b is mounted on the power base 202a. The base is provided with a fixing strip to fix the power motor 202b, so that the power motor 202b itself will not deflect during operation. The output end of the power motor 202b is connected to the output gear 202c. The conversion gear 202d is located on one side of the output gear 202c, and the output gear 202c and the conversion gear 202d mesh with each other. Through the setting of the conversion gear 202d, the power output direction of the power motor 202b is changed.

[0045] Furthermore, the first transmission component 203 includes a transmission main shaft 203a, a first pulley 203b, a second pulley 203c, a transmission belt 203d, and a transmission auxiliary shaft 203e. The first pulley 203b, the second pulley 203c, and the transmission belt 203d are interconnected. One end of the transmission main shaft 203a is connected to the rotating scraper 201, and the other end is connected to the second pulley 203c. The transmission auxiliary shaft 203e is connected to the first pulley 203b and is connected to the conversion gear 202d through the transmission auxiliary shaft 203e, which drives the first pulley 203b, the second pulley 203c, and the transmission belt 203d to rotate, thereby driving the transmission main shaft 203a to rotate, which in turn causes the rotating scraper 201 to rotate and scrape the material off the bin wall inside the bin.

[0046] Preferably, one end of the rotary scraper 201 is close to the side wall of the coal drop bin 101, and the thickness of one side of the rotary scraper 201 is greater than the thickness of the opposite side. The rotary scraper 201 is provided with an arc-shaped groove 201b on the side near the coal drop direction. The blade of the unblocking knife facing the coal flow direction is a slanted flow guiding structure, which reduces the force-bearing area of ​​the unblocking knife. The blade on the side away from the coal flow direction is a slanted bevel, which is conducive to the discharge of coal powder between the unblocking knife and the bin wall and reduces the force on the unblocking knife during operation.

[0047] The first transmission component 203 also includes a protective cover 203f and a fastening shaft 203g. The first pulley 203b, the second pulley 203c, and the transmission belt 203d are disposed inside the protective cover 203f. The fastening shaft 203g is disposed on one side of the transmission belt 203d, and both ends of the fastening shaft 203g are connected to the inner wall of the protective cover 203f. The fastening shaft 203g serves as the tensioning and transmission mechanism for the transmission belt 203d, enabling the transmission belt 203d to transmit power between the first pulley 203b and the second pulley 203c.

[0048] In summary, by setting up the scraping component 200, the rotating scraper 201 continuously rotates during the coal feeding process, stirring the material entering the coal hopper 101. At the same time, the rotating scraper 201 closely adheres to the inner wall of the coal hopper 101, scraping away the material from the hopper wall to prevent long-term accumulation from causing blockage of the coal hopper and thus affecting the coal feeding efficiency. Example 3

[0049] Reference Figures 3-8 This is the third embodiment of the present invention, which is based on the previous embodiment.

[0050] Specifically, the second transmission component 303 includes a transmission box 303a, a driving gear 303b, a driven gear 303c, and a transmission shaft 303d. The lower end of the transmission box 303a is connected to the main transmission shaft 203a. The driving gear 303b and the driven gear 303c are disposed in the inner cavity of the transmission box 303a. The driving gear 303b is connected to the main transmission shaft 203a. As the main transmission shaft 203a rotates, it drives the driving gear 303b to rotate. The transmission shaft 303d is connected to the side wall of the inner cavity of the transmission box 303a. The driven gear 303c is connected to the transmission shaft 303d, and the driving gear 303b and the driven gear 303c are meshed. The driving gear 303b drives the driven gear 303c to rotate on the transmission shaft 303d. The transmission shaft 303d can rotate around the connecting base on the inner side wall of the transmission box 303a.

[0051] Furthermore, the second transmission component 303 also includes a first transmission gear 303e and a second transmission gear 303f. The first transmission gear 303e is disposed on one side of the driven gear 303c and connected to the transmission shaft 303d, and rotates simultaneously with the driven gear.

[0052] The rotating component 302 includes a rotating collar 302a and a rotating bar 302b. The rotating collar 302a is disposed on the outer wall of the transmission main shaft 203a and is connected to but not fixed to the transmission main shaft 203a. The rotating collar 302a does not rotate with the transmission main shaft 203a. One end of the rotating collar 302a is connected to the second transmission gear 303f. The first transmission gear 303e drives the second transmission gear 303f to rotate, thereby driving the rotating collar 302a. The rotating bar 302b is disposed on the side wall of the rotating collar 302a.

[0053] Furthermore, the vibrating element 301 is symmetrically arranged at one end of the rotating element 302, including a vibrating wheel 301a, a vibrating base 301b, and an auxiliary spring 301c. The vibrating base 301b is arranged at one end of the rotating bar 302b. The vibrating wheel 301a is connected to the vibrating base 301b. The auxiliary spring 301c is arranged in the auxiliary groove 301b-1 on the side wall of the vibrating base 301b and connects the vibrating wheel 301a and the vibrating base 301b, so as to realize the extension and retraction movement of the vibrating wheel 301a in the vibrating base 301b. Power is obtained from the transmission main shaft 203a through the second transmission component 303, causing the rotating component 302 to drive the vibrating component 301 to rotate, thereby realizing the rotation of the vibrating wheel 301a along the inner wall of the coal drop chamber 101. At the same time, the vibrating assembly 300 also includes an action protrusion 304, which is disposed on the inner wall of the coal drop chamber 101. When the vibrating wheel 301a passes the action protrusion 304, the vibrating wheel 301a is compressed, causing the auxiliary spring 301c to be compressed. When the vibrating wheel 301a leaves the action protrusion 304, the auxiliary spring 301c has a restoring deformation force, which causes the vibrating wheel 301a to move outward and hit the inner wall of the coal drop chamber 101, thereby causing it to vibrate and realizing the vibrating effect on the coal drop chamber 101.

[0054] Preferably, the vibrating wheel 301a can be made of high-strength rubber material to reduce the sound when it hits the inner wall of the coal bunker 101; the passive gear 303c can be a toothed gear to reduce the vibration frequency and reduce the noise generated by vibration; at the same time, the number of action protrusions 304 can be set according to specific circumstances.

[0055] The limiting member 305 connects the rotating member 302 and the rotating scraper 201, and includes a displacement rod 305a, a connecting plate 305b, a pushing block 305c, a force-bearing block 305d, and a connecting spring 305e. One end of the displacement rod 305a is connected to the outer wall of the rotating collar 302a, and the force-bearing block 305d is connected to the other end of the displacement rod 305a. The connecting plate 305b is connected to the transmission main shaft 203a, and the connecting plate 305b has a cavity inside. The pushing block 305c, the force-bearing block 305d, and the connecting spring 305e are disposed in the cavity. The pushing block 305c is disposed on one side of the force-bearing block 305d and is connected to the rotating scraper 201. The connecting spring 305e is disposed on the side wall of the pushing block 305c.

[0056] Furthermore, the connecting spring 305e connects the pushing block 305c to the fixed block 305b-1 located in the inner cavity of the connecting plate 305b. The side walls of the pushing block 305c and the force-receiving block 305d are provided with inclined surfaces, and the two inclined surfaces fit together. By pushing the force-receiving block 305d with the pushing block 305c, the force-receiving block 305d can move upwards, thereby lifting the displacement rod 305a. Since one end of the displacement rod 305a is connected to the rotating collar 302a, it will also lift the rotating collar 302a, causing the second transmission gear 303f to disengage from the first transmission gear 303e, thus stopping the rotation of the rotating component 302. Similarly, when the force-receiving block 305d moves downwards, it will cause the second transmission gear 303f to re-engage with the first transmission gear 303e, realizing the rotation of the rotating component 302.

[0057] Furthermore, the push block 305c is connected to the fixed block 305b-1 via the connecting spring 305e, and is also connected to the rotating scraper 201. Therefore, the angular offset generated by the rotating scraper 201 will cause the push block 305c to compress the connecting spring 305e, causing the force-bearing block 305d to fall downward. When the force of the angular offset on the rotating scraper 201d is less than the force of the connecting spring 305e to restore its deformation, the connecting spring 305e will cause the push block 305c to push the force-bearing block 305d, thereby stopping the rotating part 302 from rotating.

[0058] When in use, when the coal hopper 101 is working and the coal conveying volume is large, the rotating scraper 201 will encounter resistance. In addition, the friction between it and the hopper wall increases due to the increase in coal conveying volume. Therefore, the rotating scraper 201 and the connecting plate 305b will be angularly offset, thus realizing the movement of the aforementioned pushing block 305c. This achieves the effect that when the coal conveying workload increases, in order to assist the role of the rotating scraper 201, the vibrating element 301 enters the working position to vibrate the inner wall of the coal hopper 101. When the resistance received by the rotating scraper 201 decreases, the vibrating element 301 withdraws from the working position.

[0059] 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 invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A coal bunker for preventing coal blockage and coal shortage caused by co-firing sludge, characterized in that: include, The silo assembly includes a coal chute and a coal feed hopper. The coal feed hopper is disposed on the side wall of the coal chute, and a top cover is provided on one side of the coal chute. The coal chute and the coal feed hopper are connected. A scraping assembly is provided on one side of the silo assembly and includes a rotating scraper, a power component, and a first transmission component. The rotating scraper is provided in the internal cavity of the coal silo, the power component is provided on the side wall of the coal silo, and the transmission component connects the rotating scraper and the power component. as well as, A rapping assembly is disposed on one side of the scraping assembly and includes a rapping component, a rotating component, a second transmission component, an action protrusion, and a limiting component. The rapping component is connected to the rotating component, the rotating component is connected to the second transmission component, the action protrusion is disposed on the inner side wall of the coal drop chamber, and the limiting component is connected to the rotating component. The first transmission component includes a transmission spindle; The second transmission component includes a transmission box, a driving gear, a driven gear, and a transmission shaft. The transmission box is connected to the main transmission shaft, the driving gear is connected to the main transmission shaft, and the driven gear is connected to the transmission shaft. The driving gear and the driven gear are meshed together. The second transmission component further includes a first transmission gear and a second transmission gear. The first transmission gear is disposed on one side of the driven gear and connected to the transmission shaft, and the second transmission gear is connected to the rotating component. The rotating component includes a rotating collar and a rotating bar. The rotating collar is disposed on one side of the transmission main shaft, and one end of the rotating collar is connected to the second transmission gear. The rotating bar is disposed on the side wall of the rotating collar. The limiting component connects the rotating component and the rotating scraper, and includes a displacement rod, a connecting plate, a pushing block, a force-bearing block, and a connecting spring. One end of the displacement rod is connected to the outer wall of the rotating collar, and the force-bearing block is connected to the other end of the displacement rod. The connecting plate is connected to the transmission main shaft, and the connecting plate has a cavity inside. The pushing block, the force-bearing block, and the connecting spring are disposed in the cavity. The pushing block is disposed on one side of the force-bearing block and is connected to the rotating scraper. The connecting spring is disposed on the side wall of the pushing block.

2. The coal bunker for preventing coal blockage and coal shortage caused by co-firing sludge as described in claim 1, characterized in that: The first transmission component further includes a first pulley, a second pulley, a transmission belt, and a transmission countershaft. The first pulley, the second pulley, and the transmission belt are interconnected. One end of the transmission main shaft is connected to the rotating scraper, and the other end is connected to the second pulley. The transmission countershaft is connected to the first pulley.

3. The coal bunker for preventing coal blockage and coal shortage caused by co-firing sludge as described in claim 1 or 2, characterized in that: One end of the rotating scraper is close to the side wall of the coal drop chamber, and the thickness of one side of the rotating scraper is greater than the thickness of the other side. The rotating scraper has an arc-shaped groove on the side closer to the coal drop direction.

4. The coal bunker for preventing coal blockage and coal shortage caused by co-firing sludge as described in claim 3, characterized in that: The drive gear is located inside the transmission box cavity, and the transmission shaft is connected to the side wall of the transmission box cavity.

5. The coal bunker for preventing coal blockage and coal shortage caused by co-firing sludge as described in claim 4, characterized in that: The vibrating component is located at one end of the rotating component and includes a vibrating wheel, a vibrating base, and an assisting spring. The vibrating base is located at one end of the rotating bar, the vibrating wheel is connected to the vibrating base, and the assisting spring is located in the assisting groove on the side wall of the vibrating base and connects the vibrating wheel and the vibrating base.

6. The coal bunker for preventing coal blockage and coal shortage caused by co-firing sludge as described in claim 3, characterized in that: The connecting spring connects the pushing block to the fixed block located in the inner cavity of the connecting plate, and the side walls of the pushing block and the force-bearing block are provided with inclined surfaces, and the two inclined surfaces fit together.

7. The coal bunker for preventing coal blockage and coal shortage caused by co-firing sludge as described in claim 4, characterized in that: The power unit includes a power base, a power motor, an output gear, and a conversion gear. The power base is located on the outer wall of the coal bunker, the power motor is located on one side of the power base, the output end of the power motor is connected to the output gear, the conversion gear is located on one side of the output gear, and the output gear and the conversion gear mesh with each other.

8. The coal bunker for preventing coal blockage and coal shortage caused by co-firing sludge as described in claim 7, characterized in that: The first transmission component also includes a protective cover and a fastening shaft. A first pulley, a second pulley, and a transmission belt are disposed inside the protective cover. The fastening shaft is disposed on one side of the transmission belt, and both ends of the fastening shaft are connected to the inner sidewall of the protective cover.

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