A combined feeding device for power plants

Abstract

The embodiment of the present application provides a combined feeding device for a power plant, which relates to the technical field of feeding devices. A combined feeding device for a power plant includes: a feeding mechanism, a driving and adjusting mechanism, the driving and adjusting mechanism is located at the lower end of the middle part of the feeding mechanism, and a dust raising mechanism is located at the front end of the driving and adjusting mechanism. The driving and adjusting mechanism controls the feeding height of the feeding mechanism, and the driving and adjusting mechanism controls the dust raising height of the dust raising mechanism. The feeding mechanism transports the material to the inside of the dust raising mechanism, and the higher the lifting height of the feeding mechanism. By increasing the time that the coal blocks are inside the dust box, the coal blocks are vibrated and lifted inside the dust box, and the number of air intake ports opened is automatically adjusted to adsorb the dust, thereby achieving efficient and energy-saving dust adsorption work, effectively reducing the dust content in the coal blocks, and greatly improving the combustion efficiency of the coal blocks during power generation.

Description

Technical Field

[0001] The present application relates to the technical field of feeding devices, and in particular to a combined feeding device for a power plant. Background Art

[0002] In a thermal power plant, the boiler is one of the core equipment. The boiler generates steam by burning fuels such as coal, natural gas or biomass, and the steam drives the turbine to generate electricity. Among them, in the process of the boiler burning coal to generate electricity, the use of the feeding device is particularly important. The main function of the feeding device is to transport the coal from the storage area to the combustion chamber of the boiler.

[0003] However, in the process of feeding coal blocks, the existing coal block feeding devices mostly find it difficult to perform dust removal on the coal blocks according to the dust content in the coal blocks, and thus it is difficult to perform efficient dust removal on the coal blocks with too high dust content, so that the dust affects the combustion efficiency of the coal blocks and the power generation quality. At the same time, in the process of dust removal on the coal blocks, the existing coal block feeding devices usually have the air suction ports fully opened. When the dust content in a batch of coal blocks is low, multiple air suction ports work at the same time, resulting in excessive dust suction, which wastes energy and increases the use cost of the equipment. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a combined feeding device for power plants, which can extend the falling time of high coal blocks in the dust box according to the height of the coal block discharge, increase the dust adsorption time, and effectively reduce the dust content in the coal block. At the same time, the dust plate moves downward to increase the angle with the Z-shaped frame, thereby slowing down the coal block discharge speed, improving the dust adsorption effect, and improving the combustion quality. At the same time, the distance from the coal block to the dust plate is increased, the impact force is enhanced, and the dust plate is vibrated, further raising dust and promoting adsorption. At the same time, the second dust hood can automatically adjust the number of air intake ports according to the height of the coal block, saving energy and cost, avoiding excessive dust suction, and then by extending the time of the coal block in the dust box, efficient and energy-saving dust adsorption is achieved, greatly improving the combustion efficiency of coal blocks during power generation.

[0005] A combined feeding device for a power plant according to an embodiment of the present application includes:

[0006] Feeding mechanism;

[0007] A driving and adjusting mechanism, wherein the driving and adjusting mechanism is located at the lower end of the middle part of the feeding mechanism;

[0008] A dust raising mechanism, the dust raising mechanism is located at the front end of the driving and adjusting mechanism, the driving and adjusting mechanism controls the feeding height of the feeding mechanism, the driving and adjusting mechanism controls the dust raising height of the dust raising mechanism, the feeding mechanism transports the material to the inside of the dust raising mechanism, the higher the lifting height of the feeding mechanism is, the higher the dust raising height of the dust raising mechanism is;

[0009] The dust adsorption adjustment mechanism is located at the front end of the dust raising mechanism, the driving adjustment mechanism controls the adsorption area of ​​the dust adsorption adjustment mechanism, and the higher the lifting height of the feeding mechanism is, the greater the dust adsorption area of ​​the dust adsorption adjustment mechanism is.

[0010] According to some embodiments of the present application, the feeding mechanism includes a base plate, and both sides of the rear end of the upper surface of the base plate are fixedly connected to support platforms, and the upper end of the support platform is hingedly connected to a transmission seat, and one side of the outer wall of the rear end of the transmission seat is fixedly connected to a first servo motor, and the output end of the first servo motor passes through the transmission seat and is fixedly connected to an active roller, and the inner walls of the middle and front ends of the transmission seat are rotatably connected to driven rollers, and the outer walls of the active roller and the driven roller are both provided with transmission belts.

[0011] According to some embodiments of the present application, the driving and adjusting mechanism includes a support frame and a long rotating rod, the support frame is fixedly connected to the middle part of the upper surface of the base plate, the middle part of the rear end of the upper surface of the support frame is fixedly connected to the second servo motor, the rear end of the long rotating rod is fixedly connected to the output end of the second servo motor, the rear end of the support frame close to the upper surface is fixedly connected to an assembly frame, the middle part of the assembly frame is rotatably connected to a left-handed screw, the outer wall of the lower end of the left-handed screw is fixedly connected to a first bevel gear, the outer wall of the rear end of the long rotating rod is fixedly connected to a second bevel gear, the first bevel gear and the second bevel gear are meshed with each other, the lower part of the left-handed screw rod body is sleeved with a rectangular one-way slider, the middle part of the outer wall of the front end of the rectangular one-way slider is hingedly connected to an adjusting long plate, and the upper end of the adjusting long plate is hingedly connected to the middle part of the lower surface of the front end of the transmission seat.

[0012] According to some embodiments of the present application, the dust raising mechanism includes a dust box, a Z-shaped frame, a dust plate and a toothed plate, the dust box is arranged at the front end of the upper surface of the base plate, the corners of the four outer walls of the dust box are fixedly connected to the support legs, the lower surfaces of the support legs are fixedly connected to the upper surface of the base plate, the front end of the upper surface of the support frame is fixedly connected to the support frame, the middle part of the support frame is rotatably connected to a right-hand screw rod, the outer wall of the lower end of the right-hand screw rod is fixedly connected to a third bevel gear, the outer wall of the front end of the long rotating rod is fixedly connected to a fourth bevel gear, the third bevel gear and the fourth bevel gear are meshed with each other, the upper part of the right-hand screw rod body is sleeved with a circular one-way slider, the outer walls on both sides of the circular one-way slider are fixedly connected to the connecting frame, and the front end of the connecting frame passes through the dust box and is fixedly connected to the dust seat;

[0013] The Z-shaped frame is fixedly connected to the upper end of the dust raising seat, the dust raising plate is hingedly connected to the front end of the upper part of the Z-shaped frame, and the lower part of the outer wall of the rear end of the dust raising plate is fixedly connected with three return springs. Both sides of the dust raising seat are rotatably connected with the first rotating rod, and the end of the first rotating rod close to the dust raising plate is fixedly connected with the intermediate gear. The two tooth plates are respectively fixedly connected to the two sides of the upper surface of the front end of the support frame, and the end of the first rotating rod away from the intermediate gear is fixedly connected with the winding wheel, and the outer wall of the winding wheel is wound with steel wire, and the front end of the steel wire is fixedly connected to the outer walls on both sides of the lower part of the front end of the dust raising plate.

[0014] According to some embodiments of the present application, the third bevel gear is meshed with the fourth bevel gear, the two tooth plates are located at the rear end of the dust box, and the intermediate gears are respectively meshed with the tooth plates.

[0015] According to some embodiments of the present application, one end of the three return springs away from the dust-raising plate is fixedly connected to the Z-shaped frame.

[0016] According to some embodiments of the present application, a guide plate is fixedly connected to the inner wall of the lower end of the dust box, a discharge frame is fixedly connected to the lower surface of the guide plate, and the upper surface of the front end of the discharge frame is fixedly connected to the lower surface of the dust box.

[0017] According to some embodiments of the present application, the dust adsorption adjustment mechanism includes a second rotating rod, a limiting seat, a first dust suction hood, a second dust suction hood and a gas transfer hood, the second rotating rod is rotatably connected to one side of the front end of the upper surface of the support frame, the outer wall of the rear end of the second rotating rod is fixedly connected to the first transmission wheel, the outer wall of the long rotating rod close to the front end is fixedly connected to the second transmission wheel, the outer walls of the first transmission wheel and the second transmission wheel are both sleeved with short toothed belts, the outer walls of the front end of the second rotating rod are fixedly connected to the third transmission wheel, one side of the outer wall of the upper end of the dust box is rotatably connected to the intermediate rotating rod, the outer wall of the rear end of the intermediate rotating rod is fixedly connected to the fourth transmission wheel, and the outer walls of the third transmission wheel and the fourth transmission wheel are both sleeved with long toothed belts;

[0018] The outer wall of the front end of the third rotating rod is fixedly connected to the first driven gear, and the outer wall of the front end of the third rotating rod is fixedly connected to the second driven gear, and the second driven gear and the third driven gear are meshed with each other. The upper surface of the limiting plate is fixedly connected to the lifting plate, and the middle part of the upper surface of the lifting plate is fixedly connected to the lifting plate, and the outer wall of the rear end of the lifting plate is fixedly connected to the U-shaped sealing plate, and the U-shaped sealing plate is located inside the second dust suction hood and the gas transfer hood, and the U-shaped sealing plate is slidably connected inside the second dust suction hood and the gas transfer hood.

[0019] The first dust suction hood is fixedly connected to the lower part of the inner wall of the front end of the dust box, the second dust suction hood is fixedly connected to the upper part of the inner wall of the front end of the dust box, the lower part of the outer wall of the front end of the dust box is fixedly connected with a three-way connecting pipe, the rear end of the three-way connecting pipe is through-connected with the first dust suction hood, the middle part of the bottom plate close to the upper surface is fixedly connected with a high-pressure suction pump, the suction port of the high-pressure suction pump is fixedly connected with a connecting long pipe, the upper end of the connecting long pipe is through-connected with the middle part of the front end of the three-way connecting pipe, the gas transfer hood is fixedly connected to the upper part of the outer wall of the front end of the dust box, the middle part of the outer wall of the front end of the gas transfer hood is through-connected with a multi-way connecting pipe, one side of the middle part of the multi-way connecting pipe is through-connected with a connecting short pipe, and the lower end of the connecting short pipe is through-connected with the connecting long pipe.

[0020] According to some embodiments of the present application, a guide seat is fixedly connected to the front end of the outer wall on the other side of the dust box, a guide plate is slidably connected inside the guide seat, and the upper surface of the guide plate is fixedly connected to the lower surface on the other side of the lifting plate.

[0021] According to some embodiments of the present application, a filter frame is slidably connected to the inner wall of the front end of the dust box, and a plurality of dust-filtering nets are fixedly connected to the inner wall of the filter frame.

[0022] The beneficial effects of the present application are as follows: when in use, the driving adjustment mechanism is first started according to the dust content in the coal blocks, so that the driving adjustment mechanism changes the feeding height of the coal blocks in the feeding mechanism, and the dust raising mechanism starts to move downward, and the inclination angle of the dust raising plate begins to increase. Then, when the coal blocks fall into the dust raising mechanism, the dust raising mechanism can increase the residence time of the coal blocks in the dust box, and at the same time, the coal blocks and dust can be vibrated and lifted up, effectively increasing the dust adsorption time of the dust adsorption adjustment mechanism, and at the same time, the air suction amount of the dust adsorption adjustment mechanism corresponds to the falling distance of the dust raising mechanism, which can save energy and cost and improve the dust suction efficiency. Among them, by starting the second servo motor to rotate the long rotating rod, firstly, the discharge height of the coal blocks can be raised, thereby increasing the falling length and time of the coal blocks in the dust box, thereby increasing the dust adsorption time, and effectively reducing the dust content in the coal blocks. Secondly, the dust raising plate can be moved downward and the angle between it and the Z-shaped frame can be increased, thereby slowing down the coal block discharge time and increasing the dust adsorption time. The dust content in the coal blocks is reduced and the combustion quality of the coal blocks is improved. Thirdly, the distance from the coal blocks to the dust plate can be increased, thereby increasing the impact force between the coal blocks and the dust plate, so that the dust plate vibrates under the action of the reset spring, so that the dust and coal blocks on the surface of the dust plate are lifted up. At this time, the dust in the lifting process is adsorbed again, further reducing the dust content in the coal blocks and improving the combustion quality of the coal blocks. Fourthly, the second dust hood can automatically adjust the number of air intake ports opened according to the discharge height of the coal blocks, thereby saving energy and costs, avoiding energy waste caused by excessive dust suction, and not having to affect the dust suction effect due to insufficient dust suction. Fifthly, when the dust content is high, opening more air intake ports can increase the dust suction area, thereby improving the dust suction efficiency. Sixthly, by increasing the time that the coal blocks are inside the dust box, the coal blocks are vibrated and lifted up inside the dust box, and the number of air intake ports opened is automatically adjusted to adsorb the dust, thereby realizing efficient and energy-saving dust adsorption work, effectively reducing the dust content in the coal blocks, and greatly improving the combustion efficiency of the coal blocks during power generation.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of a front three-dimensional structure of a combined feeding device for a power plant according to an embodiment of the present application;

[0026] Figure 2 It is a rear perspective structural schematic diagram of a combined feeding device for a power plant according to an embodiment of the present application;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the driving adjustment mechanism, the dust raising mechanism and the dust adsorption adjustment mechanism according to the embodiment of the present application;

[0028] Figure 4 is a schematic diagram of the three-dimensional structure of the feeding mechanism according to an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of the three-dimensional structure of the driving adjustment mechanism according to an embodiment of the present application;

[0030] Figure 6 is a schematic diagram of the three-dimensional structure of the driving adjustment mechanism and the dust raising mechanism according to an embodiment of the present application;

[0031] Figure 7 is a schematic diagram of the three-dimensional structure of a dust box according to an embodiment of the present application;

[0032] Figure 8 is a schematic top view of a three-dimensional structure of a dust-raising mechanism according to an embodiment of the present application;

[0033] Fig. 9 is a schematic diagram of a front sectional three-dimensional structure of a dust-raising mechanism according to an embodiment of the present application;

[0034] Fig.10 is a schematic diagram of a partial three-dimensional structure of a dust-raising mechanism according to an embodiment of the present application;

[0035] Fig.11 is a schematic diagram of a front three-dimensional structure of a dust adsorption adjustment mechanism according to an embodiment of the present application;

[0036] Fig.12 is a rear perspective structural diagram of a dust adsorption adjustment mechanism according to an embodiment of the present application;

[0037] Fig.13 is a schematic diagram of a three-dimensional structure of a dust box according to an embodiment of the present application;

[0038] Fig.14 According to the embodiment of the present application Fig.13 A schematic diagram of the enlarged structure at A in the middle;

[0039] Fig.15 It is a schematic diagram of the three-dimensional structure of the limit seat, the limit plate, the teeth, the third rotating rod, the first driven gear, the lifting plate and the U-shaped sealing plate according to the embodiment of the present application.

[0040] Icons: 1. Feeding mechanism; 101. Bottom plate; 102. Support platform; 103. Transmission seat; 104. First servo motor; 105. Active roller; 106. Driven roller; 107. Transmission belt; 2. Driving adjustment mechanism; 201. Support frame; 202. Second servo motor; 203. Long rotating rod; 204. Assembly frame; 205. Left-hand screw; 206. First bevel gear; 207. Second bevel gear; 208. Rectangular one-way slider; 2 09, adjusting long board; 3, dust raising mechanism; 301, dust raising box; 302, support frame; 303, right-hand screw; 304, third bevel gear; 305, fourth bevel gear; 306, round one-way slider; 307, connecting frame; 308, dust raising seat; 309, Z-shaped frame; 310, dust raising plate; 311, reset spring; 312, intermediate gear; 313, tooth plate; 314, winding wheel; 315, steel wire; 316, guide plate; 317, Discharge frame; 318, support leg; 319, first rotating rod; 4, dust adsorption adjustment mechanism; 401, second rotating rod; 402, first transmission wheel; 403, second transmission wheel; 404, short toothed belt; 405, third transmission wheel; 406, middle rotating rod; 407, fourth transmission wheel; 408, long toothed belt; 409, limit seat; 410, limit plate; 411, teeth; 412, third rotating rod; 413, first driven gear; 414, second Driven gear; 415, third driven gear; 416, guide seat; 417, guide plate; 418, lifting plate; 419, first dust hood; 420, three-way connecting pipe; 421, high-pressure suction pump; 422, connecting long pipe; 423, second dust hood; 424, gas transfer hood; 425, multi-way connecting pipe; 426, connecting short pipe; 427, U-shaped sealing plate; 428, filter frame; 429, filter dust net; 430, lifting connecting plate. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0042] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] A combined feeding device for a power plant according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0050] like Figure 1-Figure 15 As shown, a combined feeding device for a power plant according to an embodiment of the present application includes: a feeding mechanism 1, a driving adjustment mechanism 2, a dust raising mechanism 3 and a dust adsorption adjustment mechanism 4.

[0051] like Figure 1 , Figure 2 and Figure 3 As shown, a feeding mechanism 1, a driving and adjusting mechanism 2, the driving and adjusting mechanism 2 is located at the lower end of the middle part of the feeding mechanism 1, a dust raising mechanism 3, the dust raising mechanism 3 is located at the front end of the driving and adjusting mechanism 2, the driving and adjusting mechanism 2 controls the feeding height of the feeding mechanism 1, the driving and adjusting mechanism 2 controls the dust raising height of the dust raising mechanism 3, the feeding mechanism 1 transports the material to the inside of the dust raising mechanism 3, the higher the lifting height of the feeding mechanism 1 is, the higher the dust raising height of the dust raising mechanism 3 is, the dust adsorption adjusting mechanism 4, the dust adsorption adjusting mechanism 4 is located at the front end of the dust raising mechanism 3, the driving and adjusting mechanism 2 controls the adsorption area of ​​the dust adsorption adjusting mechanism 4, the higher the lifting height of the feeding mechanism 1 is, the greater the dust adsorption area of ​​the dust adsorption adjusting mechanism 4 is.

[0052] When in use, first start the driving and adjusting mechanism 2 according to the dust content in the coal blocks, so that the driving and adjusting mechanism 2 changes the feeding height of the coal blocks in the feeding mechanism 1, and at the same time the dust raising mechanism 3 starts to move downward, and at the same time the inclination angle of the dust raising plate 310 starts to increase, and then when the coal blocks fall into the dust raising mechanism 3, the dust raising mechanism 3 can increase the residence time of the coal blocks in the dust box 301, and at the same time can vibrate and lift up the coal blocks and dust, effectively increasing the dust adsorption time of the dust adsorption adjusting mechanism 4, and at the same time the air suction amount of the dust adsorption adjusting mechanism 4 corresponds to the falling distance of the dust raising mechanism 3, which can save energy and cost and improve the dust collection efficiency.

[0053] like Figure 4As shown, the feeding mechanism 1 includes a base plate 101, and support platforms 102 are fixedly connected to both sides of the rear end of the upper surface of the base plate 101, and the upper end of the support platform 102 is hingedly connected to a transmission seat 103, and a first servo motor 104 is fixedly connected to one side of the outer wall of the rear end of the transmission seat 103, and the output end of the first servo motor 104 passes through the transmission seat 103 and is fixedly connected to an active roller 105, and the inner walls of the middle and front ends of the transmission seat 103 are rotatably connected to driven rollers 106, and the outer walls of the active roller 105 and the driven roller 106 are both sleeved with a transmission belt 107, wherein, during the feeding process, the active roller 105 can be rotated by starting the first servo motor 104, and at this time, under the action of the driven roller 106 and the transmission belt 107, the coal blocks begin to be transmitted on the surface of the transmission belt 107.

[0054] like Figure 5 As shown, the driving adjustment mechanism 2 includes a support frame 201 and a long rotating rod 203. The support frame 201 is fixedly connected to the middle part of the upper surface of the base plate 101. The middle part of the rear end of the upper surface of the support frame 201 is fixedly connected to the second servo motor 202. The rear end of the long rotating rod 203 is fixedly connected to the output end of the second servo motor 202. The rear end of the support frame 201 close to the upper surface is fixedly connected to an assembly frame 204. The middle part of the assembly frame 204 is rotatably connected to a left-handed screw rod 205. The outer wall of the lower end of the left-handed screw rod 205 is fixedly connected to a first bevel gear 206. The outer wall of the rear end of the long rotating rod 203 is fixedly connected to a second bevel gear 207. The first bevel gear 206 and the second bevel gear 207 are meshed with each other. The left-handed screw rod 201 is fixedly connected to the outer wall of the lower end of the left-handed screw rod 205. 05 A rectangular one-way slider 208 is sleeved on the lower part of the rod body, and an adjusting long plate 209 is hingedly connected to the middle part of the outer wall of the front end of the rectangular one-way slider 208, and the upper end of the adjusting long plate 209 is hingedly connected to the middle part of the lower surface of the front end of the transmission seat 103. Specifically, according to the ash content in the coal block, starting the second servo motor 202 can make the long rotating rod 203 rotate. At this time, the left-handed screw rod 205 starts to rotate under the action of the first bevel gear 206 and the second bevel gear 207. At this time, the rectangular one-way slider 208 starts to drive the adjusting long plate 209 to move upward. At this time, under the action of the adjusting long plate 209, the feeding height of the transmission seat 103 starts to rise upward, thereby bringing convenience to the next step of dust adsorption.

[0055] like Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10The dust-raising mechanism 3 includes a dust-raising box 301, a Z-shaped frame 309, a dust-raising plate 310 and a toothed plate 313. The dust-raising box 301 is arranged at the front end of the upper surface of the bottom plate 101. The corners of the four outer walls of the dust-raising box 301 are fixedly connected with support legs 318. The lower surfaces of the support legs 318 are fixedly connected with the upper surface of the bottom plate 101. The front end of the upper surface of the support frame 201 is fixedly connected with a support frame 302. The middle part of the support frame 302 is rotatably connected with a right-hand screw rod 303. The outer wall of the lower end of the right-hand screw rod 303 is fixedly connected with a third bevel gear 304. The outer wall of the front end of the long rotating rod 203 is fixedly connected with a fourth bevel gear 305. The third bevel gear 304 and the fourth bevel gear 305 are meshed with each other. The upper part of the shaft of the right-hand screw rod 303 is sleeved with a circular one-way sliding The outer walls of both sides of the circular one-way slider 306 are fixedly connected with a connecting frame 307, the front end of the connecting frame 307 passes through the dust box 301 and is fixedly connected with a dust seat 308, the Z-shaped frame 309 is fixedly connected to the upper end of the dust seat 308, the dust plate 310 is hingedly connected to the front end of the upper part of the Z-shaped frame 309, and the lower part of the outer wall of the rear end of the dust plate 310 is fixedly connected with three return springs 311, both sides of the dust seat 308 are rotatably connected with a first rotating rod 319, and the end of the first rotating rod 319 close to the dust plate 310 is fixedly connected with an intermediate gear 312, and two tooth plates 313 are respectively fixedly connected to both sides of the upper surface of the front end of the support frame 201, and the end of the first rotating rod 319 away from the intermediate gear 312 is fixedly connected with the winding wheel 3 14. A steel wire 315 is wound around the outer wall of the winding wheel 314. The front ends of the steel wire 315 are fixedly connected to the outer walls on both sides of the lower front end of the dust plate 310. The third bevel gear 304 and the fourth bevel gear 305 mesh with each other. The two tooth plates 313 are located at the rear end of the dust box 301. The middle gear 312 meshes with the tooth plates 313 respectively. The ends of the three return springs 311 away from the dust plate 310 are fixedly connected to the Z-shaped frame 309. The inner wall of the lower end of the dust box 301 is fixedly connected with a guide plate 316. The lower surface of the guide plate 316 is fixedly connected with a discharge frame 317. The upper surface of the front end of the discharge frame 317 is fixedly connected to the lower surface of the dust box 301. Specifically, according to the ash content in the coal block, when the dust content is too high, the second The servo motor 202 raises the feeding height of the transmission seat 103 upwards. At the same time, during the rotation of the long rotating rod 203, the fourth bevel gear 305 and the third bevel gear 304 mesh with each other and rotate the right-hand screw rod 303. At this time, the circular one-way slider 306 starts to drive the connecting frame 307 and the dust seat 308 to move downward. At this time, the dust seat 308 drives the Z-shaped frame 309 and the dust plate 310 to move downward. At this time, the distance between the coal block and the dust plate 310 begins to increase when it falls. At the same time, during the downward movement of the dust seat 308, the intermediate gear 312 will mesh with the tooth plate 313. At this time, the winding wheel 314 starts to rotate counterclockwise and releases the steel wire 315 at a uniform speed. At this time, under the action of the reset spring 311, the dust plate 310 begins to expand upward.At the same time, the angle between the dust plate 310 and the Z-shaped frame 309 begins to increase, and when the coal blocks fall from the upper end of the dust box 301 to the upper surface of the dust plate 310, a certain impact force will be generated on the dust plate 310, and this impact force will cause the dust plate 310 to vibrate. Due to the presence of the reset spring 311, the vibration of the dust plate 310 will be amplified, so that the dust and coal blocks on the dust plate 310 are vibrated and lifted, forming a dust phenomenon, which brings convenience to the dust suction process of the dust adsorption adjustment mechanism 4.

[0056] like Fig.11 , Fig.12 , Fig.13 , Fig.14 and Fig.15The dust adsorption adjustment mechanism 4 includes a second rotating rod 401, a limiting seat 409, a first dust collection cover 419, a second dust collection cover 423 and a gas transfer cover 424. The second rotating rod 401 is rotatably connected to one side of the front end of the upper surface of the support frame 201, and the outer wall of the rear end of the second rotating rod 401 is fixedly connected to the first transmission wheel 402, and the outer wall of the long rotating rod 203 near the front end is fixedly connected to the second transmission wheel 403. The outer walls of the first transmission wheel 402 and the second transmission wheel 403 are both sleeved with short toothed belts 404. The outer wall of the front end of the second rotating rod 401 is fixedly connected to the third transmission wheel 405. One side of the outer wall of the upper end of the dust box 301 is rotatably connected to the intermediate rotating rod 406, and the outer wall of the rear end of the intermediate rotating rod 406 is fixedly connected to the fourth transmission wheel 407. The outer walls of the third transmission wheel 405 and the fourth transmission wheel 407 are both sleeved with a long toothed belt 408, the limiting seat 409 is fixedly connected to the front end of the outer wall of one side of the dust box 301, the inner sliding connection of the limiting seat 409 is connected to the limiting plate 410, the upper end of the outer wall of one side of the limiting plate 410 is fixedly connected with a plurality of teeth 411, the upper end of the outer wall of one side of the limiting seat 409 is rotatably connected with a third rotating rod 412, the outer wall of the front end of the third rotating rod 412 is fixedly connected with a first driven gear 413, the first driven gear 413 and the teeth 411 are meshed with each other, the outer wall of the rear end of the third rotating rod 412 is fixedly connected with a second driven gear 414, the outer wall of the front end of the intermediate rotating rod 406 is fixedly connected with a third driven gear 415, the second driven gear 414 and the third driven gear 415 are fixedly connected. The movable gears 415 are meshed with each other, and the upper surface of the limit plate 410 is fixedly connected to a lifting plate 418, and the middle part of the upper surface of the lifting plate 418 is fixedly connected to a lifting connecting plate 430, and the outer wall of the rear end of the lifting connecting plate 430 is fixedly connected to a U-shaped sealing plate 427, and the U-shaped sealing plate 427 is located inside the second dust collection cover 423 and the gas transfer cover 424, and the U-shaped sealing plate 427 is slidably connected inside the second dust collection cover 423 and the gas transfer cover 424, and the first dust collection cover 419 is fixedly connected to the lower part of the inner wall of the front end of the dust box 301, and the second dust collection cover 423 is fixedly connected to the upper part of the inner wall of the front end of the dust box 301, and the lower part of the outer wall of the front end of the dust box 301 is fixedly connected to a three-way connecting pipe 420, and the rear end of the three-way connecting pipe 420 is connected to the first The dust cover 419 is connected through, and a high-pressure air suction pump 421 is fixedly connected to the middle part of the bottom plate 101 near the upper surface, and a connecting long tube 422 is fixedly connected to the air inlet of the high-pressure air suction pump 421, and the upper end of the connecting long tube 422 is connected through the middle part of the front end of the three-way connecting tube 420, and the gas transfer cover 424 is fixedly connected to the upper part of the front end outer wall of the dust box 301, and the middle part of the front end outer wall of the gas transfer cover 424 is connected through a multi-way connecting tube 425, and one side of the middle part of the multi-way connecting tube 425 is connected through a connecting short tube 426, and the lower end of the connecting short tube 426 is connected through the connecting long tube 422, and the front end of the outer wall on the other side of the dust box 301 is fixedly connected to a guide seat 416, and the guide seat 416 is slidably connected to the inside of the guide plate 417,The upper surface of the guide plate 417 is fixedly connected to the lower surface of the other side of the lifting plate 418, and the inner wall of the front end of the dust box 301 is slidably connected to the filter frame 428, and the inner wall of the filter frame 428 is fixedly connected to multiple ash filtering nets 429. Specifically, according to the ash content in the coal block, when the dust content is too high, the second servo motor 202 is started and the high-pressure suction pump 421 is started at the same time. In the process of the second servo motor 202 driving the long rotating rod 203 to rotate, the second transmission wheel 403 will drive the short tooth belt 404 and the first transmission wheel 402 to rotate. At this time, the second rotating rod 401 starts to drive the third transmission wheel 405 to rotate. At this time, the middle rotating rod 406 is under the action of the fourth transmission wheel 407, the long tooth belt 408 and the third transmission wheel 405 The third driven gear 415 and the second driven gear 414 start to rotate, and the third rotating rod 412 drives the first driven gear 413 to rotate. At this time, the limit plate 410 moves upward inside the limit seat 409 under the action of the teeth 411, and at the same time, the limit seat 409 drives the lifting plate 418 to move upward, and the lifting plate 418 drives the U-shaped sealing plate 427 to move upward inside the second dust hood 423 and the gas transfer hood 424. At this time, the upward lifting distance of the U-shaped sealing plate 427 depends on the number of revolutions of the second servo motor 202. At the same time, the suction power of the high-pressure suction pump 421 is adjusted accordingly with the number of revolutions of the second servo motor 202. When the U-shaped sealing plate 427 stops rising, a part of the lower end of the second dust hood 423 stops rising. The gas inside the sub-space can flow to the inside of the gas transfer hood 424, and then flow to the inside of the multi-way connecting pipe 425 through the gas transfer hood 424. At the same time, when the high-pressure suction pump 421 is sucking air, the first dust hood 419 will perform real-time dust suction at the lower end of the dust box 301, and the space at the lower end of the second dust hood 423 that is not blocked by the U-shaped sealing plate 427 will start to suction dust. At this time, the inhaled gas will be filtered through the dust-sticking filter 429, and most of the dust generated by the coal blocks during the falling process and when they are vibrated by the dust plate 310 will be efficiently adsorbed, which effectively reduces the dust content inside the coal blocks before combustion and power generation, and greatly improves the efficiency of combustion and power generation. Among them, by starting the second servo motor 202 to rotate the long rotating rod 203, First, the discharge height of the coal blocks can be raised, thereby increasing the falling length and time of the coal blocks in the dust box 301, thereby increasing the dust adsorption time, and effectively reducing the dust content in the coal blocks. Second, the dust plate 310 can be moved downward and the angle between it and the Z-shaped frame 309 can be increased, thereby slowing down the coal block discharge time, increasing the dust adsorption time, further reducing the dust content in the coal blocks, and improving the combustion quality of the coal blocks. Third, the distance from the coal blocks to the dust plate 310 can be increased, thereby increasing the impact force between the coal blocks and the dust plate 310, so that the dust plate 310 vibrates under the action of the reset spring 311, so that the dust and coal blocks on the surface of the dust plate 310 are lifted up, and the dust in the lifting process is adsorbed again.The dust content in the coal blocks is further reduced, and the combustion quality of the coal blocks is improved. Fourthly, the second dust hood 423 can automatically adjust the number of air inlets opened according to the discharge height of the coal blocks, thereby saving energy and costs, avoiding energy waste caused by excessive dust collection, and not affecting the dust collection effect due to insufficient dust collection. Fifthly, when the dust content is high, more air inlets are opened to increase the dust collection area, thereby improving the dust collection efficiency. Sixthly, by increasing the time the coal blocks are inside the dust box 301, the coal blocks are vibrated and lifted inside the dust box 301, and the number of air inlets opened is automatically adjusted to adsorb the dust, thereby achieving efficient and energy-saving dust adsorption work, effectively reducing the dust content in the coal blocks, and greatly improving the combustion efficiency of the coal blocks during power generation.

[0057] Specifically, the working principle of the combined feeding device for power plants is as follows: during the feeding process, first, according to the ash content in the coal block, the second servo motor 202 is started to rotate the long rotating rod 203. At this time, the left-handed screw rod 205 starts to rotate under the action of the first bevel gear 206 and the second bevel gear 207. At this time, the rectangular one-way slider 208 starts to drive the adjustment long plate 209 to move upward. At this time, under the action of the adjustment long plate 209, the feeding height of the transmission seat 103 starts to rise upward. At the same time, during the rotation of the long rotating rod 203, the fourth bevel gear 305 and the third bevel gear 304 mesh with each other and rotate the right-handed screw rod 303. At this time, the circular one-way slider 306 starts to drive the connecting frame 307 and the dust-raising seat 308 to move downward. At this time, the dust seat 308 drives the Z-shaped frame 309 and the dust plate 310 to move downward. At this time, the distance between the coal block and the dust plate 310 begins to increase as the coal block falls. At the same time, in the process of the dust seat 308 moving downward, the intermediate gear 312 will mesh with the tooth plate 313. At this time, the winding wheel 314 begins to rotate counterclockwise and releases the steel wire 315 at a uniform speed. At this time, under the action of the return spring 311, the dust plate 310 begins to unfold upward. At the same time, the angle between the dust plate 310 and the Z-shaped frame 309 begins to increase. Then, when the coal block falls from the upper end of the dust box 301 to the upper surface of the dust plate 310, a certain impact force will be generated on the dust plate 310. This impact force will cause the dust plate 310 to vibrate. Due to the existence of the return spring 311, the dust plate 310 The vibration will be amplified, so that the dust and coal blocks on the dust plate 310 are vibrated and lifted up, forming a dust phenomenon, which in turn facilitates the dust suction process of the dust adsorption adjustment mechanism 4. At the same time, the second transmission wheel 403 will drive the short toothed belt 404 and the first transmission wheel 402 to rotate. At this time, the second rotating rod 401 starts to drive the third transmission wheel 405 to rotate. At this time, the middle rotating rod 406 starts to rotate under the action of the fourth transmission wheel 407, the long toothed belt 408 and the third transmission wheel 405, and makes the third driven gear 415 mesh with the second driven gear 414, so that the third rotating rod 412 drives the first driven gear 413 to rotate. At this time, the limit plate 410 moves upward inside the limit seat 409 under the action of the teeth 411. 9 drives the lifting plate 418 to move upward, and the lifting plate 418 then drives the U-shaped sealing plate 427 to move upward inside the second dust hood 423 and the gas transfer hood 424. At this time, the upward lifting distance of the U-shaped sealing plate 427 depends on the number of revolutions of the second servo motor 202. At the same time, the suction power of the high-pressure suction pump 421 is adjusted correspondingly to the number of revolutions of the second servo motor 202. When the U-shaped sealing plate 427 stops rising, the gas inside a part of the space at the lower end of the second dust hood 423 can flow to the inside of the gas transfer hood 424, and then flow to the inside of the multi-way connecting pipe 425 through the gas transfer hood 424. At the same time, when the high-pressure suction pump 421 is sucking air, the first dust hood 419 will perform real-time dust suction at the lower end of the dust box 301.The space at the lower end of the second dust hood 423 that is not blocked by the U-shaped sealing plate 427 will start to absorb dust. At this time, the inhaled gas will be filtered through the dust filter 429, and most of the dust generated by the coal blocks during the falling process and when the dust plate 310 vibrates will be efficiently absorbed, effectively reducing the dust content inside the coal blocks before they are burned to generate electricity.

[0058] It should be noted that the models and specifications of the first servo motor 104, the second servo motor 202 and the high-pressure suction pump 421 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be repeated in detail.

[0059] The power supply and principle of the first servo motor 104 , the second servo motor 202 and the high-pressure suction pump 421 are clear to those skilled in the art and will not be described in detail herein.

[0060] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0061] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A combined feeding device for a power plant, characterized in that: include: A material conveying mechanism (1), the material conveying mechanism (1) comprising a bottom plate (101), support platforms (102) being fixedly connected to both sides of the rear end of the upper surface of the bottom plate (101), a transmission seat (103) being hingedly connected to the upper end of the support seat (102), and a first servo motor (104) being fixedly connected to one side of the rear end outer wall of the transmission seat (103); A driving adjustment mechanism (2), the driving adjustment mechanism (2) being located at the lower end of the middle part of the feeding mechanism (1), the driving adjustment mechanism (2) comprising a support frame (201) and a long rotating rod (203), the support frame (201) being fixedly connected to the middle part of the upper surface of the bottom plate (101), a second servo motor (202) being fixedly connected to the middle part of the rear end of the upper surface of the support frame (201), a rear end of the long rotating rod (203) being fixedly connected to the output end of the second servo motor (202), a rear end of the support frame (201) close to the upper surface being fixedly connected to an assembly frame (204), and a A left-hand screw rod (205) is rotatably connected in the middle, a first bevel gear (206) is fixedly connected to the outer wall of the lower end of the left-hand screw rod (205), a second bevel gear (207) is fixedly connected to the outer wall of the rear end of the long rotating rod (203), the first bevel gear (206) and the second bevel gear (207) are meshed with each other, a rectangular one-way slider (208) is sleeved on the lower part of the rod body of the left-hand screw rod (205), an adjustment long plate (209) is hingedly connected to the middle part of the front end outer wall of the rectangular one-way slider (208), and the upper end of the adjustment long plate (209) is hingedly connected to the middle part of the lower surface of the front end of the transmission seat (103); A dust raising mechanism (3), the dust raising mechanism (3) being located at the front end of the driving and adjusting mechanism (2), the driving and adjusting mechanism (2) controlling the feeding height of the feeding mechanism (1), the driving and adjusting mechanism (2) controlling the dust raising height of the dust raising mechanism (3), the feeding mechanism (1) conveying materials to the interior of the dust raising mechanism (3), the higher the lifting height of the feeding mechanism (1), the higher the dust raising height of the dust raising mechanism (3), the dust raising mechanism (3) comprising a dust raising box (301), a Z-shaped frame (309), a dust raising plate (310) and a tooth plate (313), the dust raising box (301) being arranged at the front end of the upper surface of the bottom plate (101), the corners of the four outer walls of the dust raising box (301) being fixedly connected to support legs (318), the lower surfaces of the support legs (318) The support frame (302) is fixedly connected to the front end of the upper surface of the support frame (201); the middle part of the support frame (302) is rotatably connected to a right-hand screw rod (303); the outer wall of the lower end of the right-hand screw rod (303) is fixedly connected to a third bevel gear (304); the outer wall of the front end of the long rotating rod (203) is fixedly connected to a fourth bevel gear (305); the third bevel gear (304) and the fourth bevel gear (305) are meshed with each other; the upper part of the right-hand screw rod (303) is sleeved with a circular one-way slider (306); the outer walls on both sides of the circular one-way slider (306) are fixedly connected to a connecting frame (307); the front end of the connecting frame (307) passes through the dust box (301) and is fixedly connected to a dust seat (308); The Z-shaped frame (309) is fixedly connected to the upper end of the dust raising seat (308); the dust raising plate (310) is hingedly connected to the front end of the upper part of the Z-shaped frame (309); the lower part of the outer wall of the rear end of the dust raising plate (310) is fixedly connected to three return springs (311); both sides of the dust raising seat (308) are rotatably connected to first rotating rods (319); one end of the first rotating rod (319) close to the dust raising plate (310) is fixedly connected to an intermediate gear (312); the two tooth plates (313) are respectively fixedly connected to both sides of the upper surface of the front end of the support frame (201); one end of the first rotating rod (319) away from the intermediate gear (312) is fixedly connected to a winding wheel (314); a steel wire (315) is wound around the outer wall of the winding wheel (314); and the front end of the steel wire (315) is fixedly connected to the outer walls of both sides of the lower part of the front end of the dust raising plate (310); A dust adsorption adjustment mechanism (4), wherein the dust adsorption adjustment mechanism (4) is located at the front end of the dust raising mechanism (3), the driving adjustment mechanism (2) controls the adsorption area of ​​the dust adsorption adjustment mechanism (4), the higher the lifting height of the feeding mechanism (1), the greater the dust adsorption area of ​​the dust adsorption adjustment mechanism (4), the dust adsorption adjustment mechanism (4) comprises a second rotating rod (401), a limiting seat (409), a first dust collection cover (419), a second dust collection cover (423) and a gas transfer cover (424), the second rotating rod (401) is rotatably connected to one side of the front end of the upper surface of the support frame (201), and the outer portion of the rear end of the second rotating rod (401) is A first transmission wheel (402) is fixedly connected to the wall, an outer wall of the long rotating rod (203) close to the front end is fixedly connected to the second transmission wheel (403), the outer walls of the first transmission wheel (402) and the second transmission wheel (403) are both sleeved with a short toothed belt (404), the outer wall of the front end of the second rotating rod (401) is fixedly connected to the third transmission wheel (405), one side of the outer wall of the upper end of the dust box (301) is rotatably connected to an intermediate rotating rod (406), the outer wall of the rear end of the intermediate rotating rod (406) is fixedly connected to the fourth transmission wheel (407), and the outer walls of the third transmission wheel (405) and the fourth transmission wheel (407) are both sleeved with a long toothed belt (408); The limiting seat (409) is fixedly connected to the front end of the outer wall of one side of the dust box (301); the limiting seat (409) is internally slidably connected to the limiting plate (410); the upper end of the outer wall of one side of the limiting plate (410) is fixedly connected to a plurality of teeth (411); the upper end of the outer wall of one side of the limiting seat (409) is rotatably connected to a third rotating rod (412); the outer wall of the front end of the third rotating rod (412) is fixedly connected to a first driven gear (413); the first driven gear (413) and the teeth (411) are meshed with each other; the outer wall of the rear end of the third rotating rod (412) is fixedly connected to a second driven gear (414); the front end of the intermediate rotating rod (406) The outer wall of the second driven gear (414) is fixedly connected to a third driven gear (415), the second driven gear (414) meshes with the third driven gear (415), the upper surface of the limit plate (410) is fixedly connected to a lifting plate (418), the middle part of the upper surface of the lifting plate (418) is fixedly connected to a lifting connecting plate (430), the outer wall at the rear end of the lifting connecting plate (430) is fixedly connected to a U-shaped sealing plate (427), the U-shaped sealing plate (427) is located inside the second dust hood (423) and the gas transfer hood (424), and the U-shaped sealing plate (427) is slidably connected inside the second dust hood (423) and the gas transfer hood (424); The first dust hood (419) is fixedly connected to the lower portion of the inner wall of the front end of the dust box (301), the second dust hood (423) is fixedly connected to the upper portion of the inner wall of the front end of the dust box (301), a three-way connecting pipe (420) is fixedly connected to the lower portion of the outer wall of the front end of the dust box (301), the rear end of the three-way connecting pipe (420) is connected to the first dust hood (419), and a high-pressure suction pump (421) is fixedly connected to the middle portion of the bottom plate (101) near the upper surface, and the suction port of the high-pressure suction pump (421) is A connecting long tube (422) is fixedly connected, the upper end of the connecting long tube (422) is connected through the middle of the front end of the three-way connecting tube (420), the gas transfer cover (424) is fixedly connected to the upper part of the front end outer wall of the dust box (301), the middle part of the front end outer wall of the gas transfer cover (424) is connected through a multi-way connecting tube (425), one side of the middle part of the multi-way connecting tube (425) is connected through a connecting short tube (426), and the lower end of the connecting short tube (426) is connected through the connecting long tube (422).

2. A combined feeding device for a power plant according to claim 1, characterized in that: The output end of the first servo motor (104) passes through the transmission seat (103) and is fixedly connected to a driving roller (105); the inner walls of the middle and front ends of the transmission seat (103) are rotatably connected to driven rollers (106) respectively; and the outer walls of the driving roller (105) and the driven roller (106) are both sleeved with transmission belts (107).

3. The combined feeding device for a power plant according to claim 1, characterized in that: The third bevel gear (304) and the fourth bevel gear (305) are meshed with each other, the two tooth plates (313) are both located at the rear end inside the dust box (301), and the intermediate gears (312) are respectively meshed with the tooth plates (313).

4. A combined feeding device for a power plant according to claim 1, characterized in that: One end of each of the three return springs (311) away from the dust-generating plate (310) is fixedly connected to the Z-shaped frame (309).

5. The combined feeding device for a power plant according to claim 1, characterized in that: A material guide plate (316) is fixedly connected to the inner wall at the lower end of the dust box (301), a material discharge frame (317) is fixedly connected to the lower surface of the material guide plate (316), and an upper surface at the front end of the material discharge frame (317) is fixedly connected to the lower surface of the dust box (301).

6. The combined feeding device for a power plant according to claim 1, characterized in that: A guide seat (416) is fixedly connected to the front end of the outer wall on the other side of the dust box (301), a guide plate (417) is slidably connected inside the guide seat (416), and the upper surface of the guide plate (417) is fixedly connected to the lower surface of the other side of the lifting plate (418).

7. The combined feeding device for a power plant according to claim 1, characterized in that: The inner wall of the front end of the dust box (301) is slidably connected to a filter frame (428), and the inner wall of the filter frame (428) is fixedly connected to a plurality of dust-binding filtering nets (429).

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