A circulating fluidized bed boiler multi-fuel high-efficiency mixed combustion system

Abstract

The present invention provides a circulating fluidized bed boiler multi-fuel efficient blending system, which relates to the technical field of boiler blending devices, including: a boiler body; two rectangular block-shaped support blocks are welded on the bottom end surface of the boiler body. The present application sets up auxiliary parts, first, it can realize the gas supply for combustion through a booster fan; second, while realizing the gas supply for combustion, it can realize the auxiliary push inside the boiler body of multiple fuel tanks; third, due to the internal combustion, the gas expands, and the expanded gas is easy to flow back. Through the gas supply of the booster fan, the exhaust gas backflow can be avoided to cause pollution; fourth, when the first discharge pipe is blocked, the three-way valve is adjusted, and then the booster fan is started, at this time, the first discharge pipe can be cleared, which solves the problem that although the existing device can be blended, it cannot achieve sufficient blending of multiple fuels through one structure through structural improvements to achieve the purpose of low cost and high blending efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of boiler co-firing devices, and in particular to a circulating fluidized bed boiler multi-fuel high-efficiency co-firing system. Background Art

[0002] The use of multi-fuel technology can effectively reduce environmental pollution; the mixed use of different fuels can make full use of the advantages of each fuel, reduce the emission of harmful gases and protect the environment; in addition, some fuels in multi-fuel technology can be recycled, reducing fuel waste and reducing the impact on the environment. Currently, most boilers use a blended combustion method when burning.

[0003] Although the existing device is capable of blending, it is unable to achieve sufficient blending of multiple fuels through one structure through structural improvement to achieve the purpose of low cost and high blending efficiency; during the combustion process of the existing device, the gas in the combustion chamber expands under the influence of temperature, and then the gas diffuses outward through the feeding part, thereby affecting the surrounding environment.

[0004] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a circulating fluidized bed boiler multi-fuel high-efficiency blending combustion system is provided, in order to achieve a more practical purpose. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a circulating fluidized bed boiler multi-fuel high-efficiency blending system to solve the problem that although the existing device can perform blending, it is unable to achieve sufficient blending of multiple fuels through one structure through structural improvement to achieve the purpose of low cost and high blending efficiency; during the combustion process of the existing device, the gas in the combustion chamber expands under the influence of temperature, and then the gas diffuses outward through the feeding part, thereby affecting the surrounding environment.

[0006] The present invention provides a circulating fluidized bed boiler multi-fuel efficient blending system, which specifically comprises: a boiler body; two rectangular block-shaped support blocks are welded on the bottom end surface of the boiler body, and two mounting arms are welded on the right end surface of the boiler body, and a first conveying part is fixed on the two mounting arms.

[0007] Furthermore, the first conveying part is composed of a frame, conveying rollers, a conveyor belt, a mounting frame, a first feed hopper and a first motor. The frame is fixed to the top end surface of the mounting arm, two conveying rollers are rotatably connected to the frame, a conveyor belt is sleeved on the two conveying rollers, a first motor is fixed to the front end surface of the frame, and the rotating shaft of the first motor is fixed to the rotating shaft of a conveying roller on the left side.

[0008] Furthermore, a mounting frame is welded on the top surface of the frame body, the mounting frame is a concave structure, and a first feed hopper is welded on the mounting frame.

[0009] Furthermore, a second conveying part is welded on the frame, and the second conveying part is composed of a second feed hopper, a crushing roller, a second motor and a first discharge pipe. The second feed hopper is fixed on the left end face of the frame, and two crushing rollers are rotatably connected inside the second feed hopper. Two second motors are fixed on the front end face of the second feed hopper, and the two second motors are threadedly connected to the two crushing rollers respectively.

[0010] Furthermore, a first discharge pipe is welded to the bottom end face of the second feed hopper; a mixing part is fixed on the boiler body by fixing, and the mixing part is composed of a barrel body, a cover plate, a third motor, a rotating shaft, an impeller and a second discharge pipe; the barrel body is fixed on a fixed frame on the boiler body, a cover plate is buckled on the top of the barrel body, a third motor is fixed on the top surface of the cover plate, a rotating shaft is fixed on the rotating shaft of the third motor, the rotating shaft is located inside the barrel body, and impellers are fixed on the rotating shaft in a linear array.

[0011] Furthermore, the top end surface of the topmost impeller contacts the bottom end surface of the cover plate, and the top end surface of the topmost impeller also contacts the bottom end surface of the first discharge pipe. The width of the blades on the impeller is greater than the diameter of the first discharge pipe. When the impeller rotates, the first discharge pipe is in an intermittent sealing state.

[0012] Furthermore, a first adjustment part is fixed on the boiler body, and the first adjustment part is composed of a first electric cylinder, a first baffle and a through hole. There are two first electric cylinders in total, and the two first electric cylinders are fixed on the right end face of the boiler body, and the protruding ends of the two first electric cylinders are fixed to the first baffle; a second discharge pipe is welded under the barrel body, and the second discharge pipe is connected to the boiler body. The second discharge pipe is a two-stage structure, and the first baffle passes through the second discharge pipe of the two-stage structure, and the top end face and the bottom end face of the first baffle are respectively in contact with the second discharge pipe of the two-stage structure.

[0013] Furthermore, a through hole is provided on the top surface of the first baffle, and the through hole is a circular hole structure, and the diameter of the through hole is equal to the inner diameter of the second discharge pipe.

[0014] Furthermore, a second adjustment part is fixed to the top surface of the boiler body, and the second adjustment part is composed of a second electric cylinder and a second baffle. Two second electric cylinders are fixed to the top surface of the boiler body, and the protruding ends of the two second electric cylinders both pass through the boiler body. The protruding ends of the two second electric cylinders are welded to the second baffle. The second baffle is a rectangular block structure, and the right end surface of the second baffle is in contact with the left end of the second discharge pipe. At this time, the left end of the second discharge pipe is in a sealed state.

[0015] Furthermore, an auxiliary part is fixed on the mounting arm, and the auxiliary part consists of a booster fan, a connecting pipe and a three-way valve. The booster fan is fixed on the mounting arm by a screw, and the booster fan is connected to a connecting pipe. A three-way valve is connected to the upper end of the connecting pipe, and the three-way valve is connected to the first discharge pipe.

[0016] Furthermore, a control box is fixed on the boiler body, in which a microprocessor and a 4G module are installed. The microprocessor and the 4G module are electrically connected, and the microprocessor is electrically connected to the first motor, the second motor, the third motor, the first electric cylinder, the second electric cylinder and the booster fan.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present application sets a mixing part. On the one hand, when multiple dyes enter the barrel through the first discharge pipe, the third motor is controlled to rotate. When the third motor rotates, it can drive the rotating shaft and the impeller to rotate. Through the rotation of the impeller, the mixing of multiple fuels can be achieved. On the other hand, during the rotation of the impeller, the intermittent blockage of the first discharge pipe can be achieved, which also achieves intermittent feeding of the first discharge pipe. Through the intermittent feeding of the first discharge pipe, the mixing of multiple fuels can be better achieved. Compared with the existing device, the present device can not only achieve impeller mixing, but also achieve intermittent feeding through the cooperation of the impeller and the first discharge pipe, thereby ensuring the mixing effect of multiple fuels and the subsequent combustion effect.

[0019] Through the setting of the auxiliary part, the present application can, firstly, realize the air supply for combustion through the booster fan; secondly, realize the auxiliary pushing inside the boiler body of various fuel tanks while realizing the air supply for combustion; thirdly, the gas expands due to the internal combustion, and the expanded gas is easy to flow back. Through the air supply of the booster fan, the pollution caused by the backflow of exhaust gas can be avoided; fourthly, when the first discharge pipe is blocked, adjust the three-way valve and then start the booster fan, at this time, the first discharge pipe can be cleared.

[0020] The present application sets the first conveying part, and when the two second motors rotate, they can drive the two crushing rollers to rotate. Through the rotation of the two crushing rollers, multiple fuels can be crushed, and the subsequent multiple fuels can be burned fully and quickly after being crushed.

[0021] The present application adopts the setting of the first adjustment part and the second adjustment part. First, when the feed amount needs to be adjusted, the extension and retraction of the two first electric cylinders can be controlled. When the two first electric cylinders are extended and retracted, the position of the first baffle can be adjusted. At this time, the feed amount can be adjusted under the action of the through hole; second, when the first electric cylinder is damaged, the feed amount can be adjusted by controlling the extension and retraction of the two second electric cylinders. When the two second electric cylinders are extended and retracted, the height of the second baffle can be driven to be adjusted. At this time, the shielding amount of the left end of the second discharge pipe by the second baffle is adjusted, and the feed amount is adjusted, and the adjustability is high.

[0022] The present application adopts the setting of the auxiliary part. When it is necessary to supply gas to the boiler body to assist combustion, the three-way valve is first adjusted to connect the connecting pipe with the lower half of the first discharge pipe. At this time, the upper and lower parts of the first discharge pipe are not connected, and the booster fan is started. At this time, the wind force generated by the booster fan can enter the barrel body through the lower half of the first discharge pipe. The airflow entering the barrel body can assist in pushing the fuel into the boiler body, and the gas entering the boiler body can play a combustion-assisting role.

[0023] Through the setting of the microprocessor and the 4G module, the present application can control the microprocessor through a mobile terminal, and the microprocessor can control the operation of multiple electric components, thereby realizing automatic feeding and environmentally friendly treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0025] In the attached picture:

[0026] Figure 1 It shows an axial structural schematic diagram of a multi-fuel high-efficiency mixed combustion system for a circulating fluidized bed boiler according to the present invention;

[0027] Figure 2 It shows a schematic diagram of the main structure of a multi-fuel efficient mixed combustion system for a circulating fluidized bed boiler according to the present invention;

[0028] Figure 3 The schematic diagram of the axial structure of the multi-fuel high-efficiency mixed combustion system of the circulating fluidized bed boiler according to the present invention is shown after partial sectioning;

[0029] Figure 4 It is shown that according to the present invention Figure 3 Schematic diagram of the main structure;

[0030] Figure 5 It shows a schematic diagram of the axial structure of the first arrangement of pipes, the cover plate, the third motor, the rotating shaft and the impeller according to the present invention;

[0031] Figure 6It is shown that according to the present invention Figure 5 A schematic diagram of the axial structure after partial sectioning;

[0032] Figure 7 It shows an axial structural schematic diagram of the first adjustment part according to the present invention;

[0033] Figure 8 The schematic diagram of the system structure of the circulating fluidized bed boiler multi-fuel high-efficiency mixed combustion system according to the present invention is shown.

[0034] Reference numerals list

[0035] 1. Boiler body; 101. Support block; 102. Mounting arm;

[0036] 2. First conveying part; 201. Frame; 202. Conveying roller; 203. Conveying belt; 204. Mounting frame; 205. First feeding hopper; 206. First motor;

[0037] 3. Second conveying part; 301. Second feeding hopper; 302. Crushing roller; 303. Second motor; 304. First discharge pipe;

[0038] 4. Mixing part; 401. barrel; 402. cover plate; 403. third motor; 404. rotating shaft; 405. impeller; 406. second discharge pipe;

[0039] 5. First adjustment part; 501. First electric cylinder; 502. First baffle; 503. Through hole;

[0040] 6. Second adjustment part; 601. Second electric cylinder; 602. Second baffle;

[0041] 7. Auxiliary parts; 701. Booster fan; 702. Connecting pipe; 703. Three-way valve;

[0042] 8. Control box; 801. Microprocessor; 802. 4G module. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0044] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present invention have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless the embodiments of the present invention are clearly defined in this way.

[0045] The words "first", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "one", "one" or "the" and similar words do not indicate a quantity limitation, but indicate the existence of at least one. Similarly, the words "include" or "comprise" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the following description, the spatial and directional terms such as "upper", "lower", "front", "back", "top", "bottom", "vertical" and "horizontal" may be used to describe the embodiments of the present invention, but it should be understood that these terms are only for the convenience of describing the embodiments shown in the figures, and do not require the actual device to be constructed or operated in a specific orientation. In the following description, the use of terms such as "connect", "couple", "fix" and "attach" may refer to the direct connection between two elements or structures without other elements or structures, or may refer to the indirect connection between two elements or structures through an intermediate element or structure, unless otherwise clearly stated in this article.

[0046] Embodiment 1:

[0047] As attached Figure 1 To Attachment Figure 8 As shown:

[0048] The present invention provides a circulating fluidized bed boiler multi-fuel efficient blending system, comprising: a boiler body 1; two rectangular block-shaped support blocks 101 welded to the bottom end surface of the boiler body 1, two mounting arms 102 welded to the right end surface of the boiler body 1, and a first conveying part 2 fixed to the two mounting arms 102.

[0049] Among them, the first conveying part 2 is composed of a frame 201, a conveying roller 202, a conveying belt 203, a mounting frame 204, a first feed hopper 205 and a first motor 206. The frame 201 is fixed to the top end surface of the mounting arm 102. Two conveying rollers 202 are rotatably connected to the frame 201. A conveying belt 203 is sleeved on the two conveying rollers 202. A first motor 206 is fixed to the front end surface of the frame 201. The rotating shaft of the first motor 206 is fixed to the rotating shaft of a conveying roller 202 on the left.

[0050] Among them, a mounting frame 204 is welded on the top surface of the frame body 201, and the mounting frame 204 is a concave structure. A first feed hopper 205 is welded on the mounting frame 204. During use, a variety of dyes can be put into the first feed hopper 205. At this time, the various dyes will fall onto the conveyor belt 203, and the first motor 206 is controlled to rotate. When the first motor 206 rotates, it can drive the conveyor roller 202 and the conveyor belt 203 to rotate, and the transportation of various fuels can be realized at this time.

[0051] Among them, a second conveying part 3 is welded on the frame 201, and the second conveying part 3 is composed of a second feed hopper 301, a crushing roller 302, a second motor 303 and a first discharge pipe 304. The second feed hopper 301 is fixed on the left end face of the frame 201, and two crushing rollers 302 are rotatably connected in the second feed hopper 301. Two second motors 303 are fixed to the front end face of the second feed hopper 301, and the two second motors 303 are respectively threadedly connected to the two crushing rollers 302. During use, when a variety of dyes enter the second feed hopper 301, the two second motors 303 are controlled to rotate. When the two second motors 303 rotate, the two crushing rollers 302 can be driven to rotate. Through the rotation of the two crushing rollers 302, a variety of fuels can be crushed, and the crushing of a variety of fuels facilitates the subsequent full and rapid combustion of a variety of fuels.

[0052] Among them, a first discharge pipe 304 is welded to the bottom end face of the second feed hopper 301; a mixing part 4 is fixed on the boiler body 1 by fixing, and the mixing part 4 is composed of a barrel body 401, a cover plate 402, a third motor 403, a rotating shaft 404, an impeller 405 and a second discharge pipe 406. The barrel body 401 is fixed on a fixed frame on the boiler body 1, and a cover plate 402 is buckled on the top of the barrel body 401. A third motor 403 is fixed on the top surface of the cover plate 402. A rotating shaft 404 is fixed on the rotating shaft of the third motor 403. The rotating shaft 404 is located inside the barrel body 401, and impellers 405 are fixed on the rotating shaft 404 in a linear array.

[0053] Among them, the top end surface of the top impeller 405 contacts the bottom end surface of the cover plate 402, and the top end surface of the top impeller 405 also contacts the bottom end surface of the first discharge pipe 304. The width of the blades on the impeller 405 is greater than the diameter of the first discharge pipe 304. When the impeller 405 rotates, the first discharge pipe 304 is in an intermittent sealing state. During use, when a variety of dyes enter the barrel body 401 through the first discharge pipe 304, the third motor 403 is controlled to rotate. When the third motor 403 rotates, it can drive the rotating shaft 404 and the impeller 405 to rotate. Through the rotation of the impeller 405, the mixing of multiple fuels can be achieved. At the same time, during the rotation of the impeller 405, the intermittent blocking of the first discharge pipe 304 can be achieved, which also realizes the intermittent feeding of the first discharge pipe 304. Through the intermittent feeding of the first discharge pipe 304, the mixing of multiple fuels can be better achieved.

[0054] Among them, a first adjustment part 5 is fixed on the boiler body 1, and the first adjustment part 5 is composed of a first electric cylinder 501, a first baffle 502 and a through hole 503. There are two first electric cylinders 501 in total, and the two first electric cylinders 501 are fixed on the right end surface of the boiler body 1, and the protruding ends of the two first electric cylinders 501 are fixed to the first baffle 502; a second discharge pipe 406 is welded under the barrel body 401, and the second discharge pipe 406 is connected to the boiler body 1. The second discharge pipe 406 is a two-stage structure, and the first baffle 502 passes through the second discharge pipe 406 of the two-stage structure, and the top end surface and the bottom end surface of the first baffle 502 are respectively in contact with the second discharge pipe 406 of the two-stage structure.

[0055] Among them, a through hole 503 is opened on the top surface of the first baffle 502, and the through hole 503 is a circular hole structure. The diameter of the through hole 503 is equal to the inner diameter of the second discharge pipe 406. When the feed amount needs to be adjusted, the two first electric cylinders 501 can be controlled to extend and retract. When the two first electric cylinders 501 are extended and retracted, the position of the first baffle 502 can be adjusted. At this time, the feed amount can be adjusted under the action of the through hole 503.

[0056] Among them, a second adjustment part 6 is fixed to the top surface of the boiler body 1, and the second adjustment part 6 is composed of a second electric cylinder 601 and a second baffle 602. Two second electric cylinders 601 are fixed to the top surface of the boiler body 1, and the protruding ends of the two second electric cylinders 601 both pass through the boiler body 1. The protruding ends of the two second electric cylinders 601 are welded to the second baffle 602. The second baffle 602 is a rectangular block structure. The right end face of the second baffle 602 contacts the left end of the second discharge pipe 406. At this time, the left end of the second discharge pipe 406 is in a sealed state. When the first electric cylinder 501 is damaged, the feed amount can be adjusted by controlling the extension and contraction of the two second electric cylinders 601. When the two second electric cylinders 601 are extended and contracted, the second baffle 602 can be driven to adjust the height. At this time, the second baffle 602 can adjust the shielding amount of the left end of the second discharge pipe 406, thereby realizing the adjustment of the feed amount.

[0057] Among them, the auxiliary part 7 is fixed on the mounting arm 102, and the auxiliary part 7 is composed of a booster fan 701, a connecting pipe 702 and a three-way valve 703. The booster fan 701 is fixed on the mounting arm 102 by a screw, and the booster fan 701 is connected to a connecting pipe 702. The upper end of the connecting pipe 702 is connected to a three-way valve 703, and the three-way valve 703 is connected to the first discharge pipe 304. During use, when it is necessary to supply gas to the boiler body 1 for combustion assistance, First, adjust the three-way valve 703 to connect the connecting pipe 702 with the lower half of the first discharge pipe 304. At this time, the upper and lower parts of the first discharge pipe 304 are not connected. Start the booster fan 701. At this time, the wind force generated by the booster fan 701 can enter the barrel body 401 through the lower half of the first discharge pipe 304. The airflow entering the barrel body 401 can assist in pushing the fuel into the boiler body 1, and the gas entering the boiler body 1 can play a combustion-supporting role.

[0058] Embodiment 2:

[0059] On the basis of the first embodiment, it also includes: a control box 8 is fixed on the boiler body 1, and a microprocessor 801 and a 4G module 802 are installed in the control box 8, the microprocessor 801 and the 4G module 802 are electrically connected, and the microprocessor 801 is electrically connected to the first motor 206, the second motor 303, the third motor 403, the first electric cylinder 501, the second electric cylinder 601 and the booster fan 701. During use, the 4G module 802 can be controlled by the mobile terminal, and the 4G module 802 transmits a signal to the microprocessor 801, and then the microprocessor 801 controls the first motor 206, the second motor 303, the third motor 403, the first electric cylinder 501, the second electric cylinder 601 and the booster fan 701 to work.

[0060] The specific usage and function of this embodiment are as follows:

[0061] During use, multiple dyes can be put into the first feed hopper 205, and the multiple dyes will fall onto the conveyor belt 203. The first motor 206 is controlled to rotate. When the first motor 206 rotates, it can drive the conveyor roller 202 and the conveyor belt 203 to rotate, and the conveying of multiple fuels can be achieved. When multiple dyes enter the second feed hopper 301, the two second motors 303 are controlled to rotate. When the two second motors 303 rotate, they can drive the two crushing rollers 302 to rotate. Through the rotation of the two crushing rollers 302, the crushing of multiple fuels can be achieved. After the fuel is crushed, it is convenient for the subsequent multiple fuels to be fully and quickly burned; when multiple dyes enter the barrel body 401 through the first discharge pipe 304, the third motor 403 is controlled to rotate. When the third motor 403 rotates, it can drive the rotating shaft 404 and the impeller 405 to rotate. Through the rotation of the impeller 405, the mixing of multiple fuels can be achieved. At the same time, during the rotation of the impeller 405, the intermittent blocking of the first discharge pipe 304 can be achieved, and the intermittent feeding of the first discharge pipe 304 is achieved. Through the intermittent feeding of the first discharge pipe 304, it can be better To achieve a mixture of multiple fuels; when the feed amount needs to be adjusted, the two first electric cylinders 501 can be controlled to extend or retract. When the two first electric cylinders 501 are extended or retracted, the position of the first baffle 502 can be adjusted. At this time, the feed amount can be adjusted under the action of the through hole 503; when the first electric cylinder 501 is damaged, the feed amount can be adjusted by controlling the extension or retraction of the two second electric cylinders 601. When the two second electric cylinders 601 are extended or retracted, the height of the second baffle 602 can be driven to adjust. At this time, the second baffle 602 covers the left end of the second discharge pipe 406. The adjustment of the gear amount also realizes the adjustment of the feed amount; when it is necessary to supply gas to the boiler body 1 for combustion assistance, first adjust the three-way valve 703 to connect the connecting pipe 702 with the lower half of the first discharge pipe 304. At this time, the upper and lower parts of the first discharge pipe 304 are not connected, and start the booster fan 701. At this time, the wind force generated by the booster fan 701 can enter the barrel body 401 through the lower half of the first discharge pipe 304. The airflow entering the barrel body 401 can assist in pushing the fuel into the boiler body 1, and the gas entering the boiler body 1 can play a role in combustion assistance.

[0062] The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A circulating fluidized bed boiler multi-fuel efficient mixed combustion system, characterized in that: include: A boiler body (1); two rectangular block-shaped support blocks (101) are welded to the bottom end surface of the boiler body (1); two mounting arms (102) are welded to the right end surface of the boiler body (1); a first conveying part (2) is fixed to the two mounting arms (102); the first conveying part (2) is composed of a frame (201), a conveying roller (202), a conveying belt (203), a mounting frame (204), a first feed hopper (205) and a first motor (206); the frame (201) is fixed to the top end surface of the mounting arm (102); two conveying rollers (202) are rotatably connected to the frame (201); a conveying belt (203) is sleeved on the two conveying rollers (202); the frame (201 ) A first motor (206) is fixed to the front end face of the frame (201), and the rotating shaft of the first motor (206) is fixed to the rotating shaft of a conveying roller (202) on the left side; a second conveying part (3) is welded to the frame (201), and the second conveying part (3) is composed of a second feed hopper (301), a crushing roller (302), a second motor (303) and a first discharge pipe (304); the second feed hopper (301) is fixed to the left end face of the frame (201), and two crushing rollers (302) are rotatably connected in the second feed hopper (301); two second motors (303) are fixed to the front end face of the second feed hopper (301), and the two second motors (303) are respectively threadedly connected to the two crushing rollers (302); A first discharge pipe (304) is welded to the bottom end surface of the second feed hopper (301); a mixing part (4) is fixed to the boiler body (1), and the mixing part (4) is composed of a barrel (401), a cover plate (402), a third motor (403), a rotating shaft (404), an impeller (405) and a second discharge pipe (406); the barrel (401) is fixed to a fixing frame on the boiler body (1); a cover plate (402) is buckled on the top of the barrel (401); a third motor (403) is fixed on the top surface of the cover plate (402); a rotating shaft (404) is fixed on the rotating shaft of the third motor (403); the rotating shaft (404) is located inside the barrel (401); and impellers (405) are fixed on the rotating shaft (404) in a linear array; The top end surface of the topmost impeller (405) contacts the bottom end surface of the cover plate (402), and the top end surface of the topmost impeller (405) also contacts the bottom end surface of the first discharge pipe (304). The width of the blades on the impeller (405) is greater than the diameter of the first discharge pipe (304). When the impeller (405) rotates, the first discharge pipe (304) is in an intermittent sealing state.

2. A circulating fluidized bed boiler multi-fuel efficient mixed combustion system as claimed in claim 1, characterized in that: A mounting frame (204) is welded to the top surface of the frame body (201); the mounting frame (204) is a concave structure; and a first feed hopper (205) is welded to the mounting frame (204).

3. A circulating fluidized bed boiler multi-fuel efficient mixed combustion system as claimed in claim 2, characterized in that: A first adjustment part (5) is fixed on the boiler body (1), and the first adjustment part (5) is composed of a first electric cylinder (501), a first baffle (502) and a through hole (503). Two first electric cylinders (501) are provided, and the two first electric cylinders (501) are fixed on the right end surface of the boiler body (1), and the protruding ends of the two first electric cylinders (501) are fixed to the first baffle (502); a second discharge pipe (406) is welded below the barrel body (401), and the second discharge pipe (406) is connected to the boiler body (1). The second discharge pipe (406) is a two-stage structure, and the first baffle (502) passes through the second discharge pipe (406) of the two-stage structure, and the top end surface and the bottom end surface of the first baffle (502) are respectively in contact with the second discharge pipe (406) of the two-stage structure.

4. A circulating fluidized bed boiler multi-fuel efficient mixed combustion system as claimed in claim 3, characterized in that: A through hole (503) is provided on the top surface of the first baffle (502). The through hole (503) is a circular hole structure. The diameter of the through hole (503) is equal to the inner diameter of the second discharge pipe (406).

5. A circulating fluidized bed boiler multi-fuel efficient mixed combustion system as claimed in claim 4, characterized in that: A second adjustment part (6) is fixed to the top surface of the boiler body (1), and the second adjustment part (6) is composed of a second electric cylinder (601) and a second baffle (602). Two second electric cylinders (601) are fixed to the top surface of the boiler body (1), and the protruding ends of the two second electric cylinders (601) both pass through the boiler body (1). The protruding ends of the two second electric cylinders (601) are welded to the second baffle (602). The second baffle (602) is a rectangular block structure. The right end surface of the second baffle (602) contacts the left end of the second discharge pipe (406), and at this time, the left end of the second discharge pipe (406) is in a sealed state.

6. A circulating fluidized bed boiler multi-fuel efficient mixed combustion system as claimed in claim 5, characterized in that: The mounting arm (102) is fixed with an auxiliary part (7), the auxiliary part (7) being composed of a booster fan (701), a connecting pipe (702) and a three-way valve (703); the booster fan (701) is fixed to the mounting arm (102) via a screw, the booster fan (701) is connected with a connecting pipe (702), an upper end of the connecting pipe (702) is connected with a three-way valve (703), and the three-way valve (703) is connected to the first discharge pipe (304).

7. A circulating fluidized bed boiler multi-fuel efficient mixed combustion system as claimed in claim 6, characterized in that: A control box (8) is fixed on the boiler body (1), and a microprocessor (801) and a 4G module (802) are installed in the control box (8); the microprocessor (801) and the 4G module (802) are electrically connected, and the microprocessor (801) is electrically connected to the first motor (206), the second motor (303), the third motor (403), the first electric cylinder (501), the second electric cylinder (601) and the booster fan (701).

Images