A power plant fuel feedstock screening separator

Abstract

The utility model provides a power plant fuel raw material screening separator, including support frame and the conveying mesh belt of installation in support frame inside, the upper surface fixed connection of support frame has two groups of stand, and the top end of two groups stand is fixedly connected with the top plate together, install the agitating assembly who is used for to the loose of the accumulated coal on the conveying mesh belt of top plate, the agitating assembly includes the L shape board of setting in a group below the top plate, and the bottom surface of every L shape board all is fixedly connected with the spacing board of one group equidistance arrangement. Through the cooperation of the agitating assembly and the blowing assembly that set up, use the agitating assembly can carry out the vertical flow cutting dispersing of the accumulated coal, break the compact accumulation structure and make the coal dust expose, can make the coal dust separate through the blowing assembly to the coal after dispersing blows and makes the coal dust separate, further improve the coal dust removal rate of coal as a whole, effectively prevent the equipment dust pollution and the accumulation problem when using, so as to guarantee the combustion efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of fuel processing equipment for power plants, and in particular to a fuel feedstock screening and separator for power plants. Background Technology

[0002] Power plants mainly use coal as fuel. Before entering the combustion system, the coal needs to undergo strict screening and separation. Screening and separation can effectively remove various impurities mixed in the raw materials. This pretreatment can improve the purity of the fuel entering the furnace, laying the foundation for the stable operation of the subsequent combustion system, the improvement of thermal efficiency, and the reduction of pollutant emissions.

[0003] Coal combustion generates a large amount of coal dust and shale debris during storage and transportation. Excessive dust entering the combustion system can lead to uneven air distribution, increase the load on the induced draft fan, and may also accumulate in the pipeline, creating safety hazards. Currently, when screening and separating coal containing dust, the main method used is to remove coal dust by using a conveyor belt combined with top airflow purging. However, since the conveyor belt usually carries a large amount of coal at a time, the coal will accumulate to a certain thickness. A large amount of coal dust mixed in the coal is trapped in the middle and deep layers and cannot be removed. This will still cause dust pollution and deposition problems in the conveying pipeline and combustion equipment, further reducing combustion efficiency. To address this, we provide a fuel feedstock screening and separator for power plants. Utility Model Content

[0004] This invention provides a fuel feedstock screening and separator for power plants to solve the technical problems existing in the background art.

[0005] The purpose and effect of this utility model of a fuel and raw material screening and separator for power plants are achieved by the following specific technical means: A fuel and raw material screening and separator for power plants includes a support frame and a conveyor belt installed inside the support frame. Two sets of columns are fixedly connected to the upper surface of the support frame, and a top plate is fixedly connected to the top of the two sets of columns.

[0006] The top plate is equipped with an agitation component for loosening the coal piled on the conveyor belt. The agitation component includes a set of L-shaped plates disposed below the top plate. Each L-shaped plate has a set of equally spaced partition plates fixedly connected to its bottom surface. Multiple sets of partition plates are arranged in a cross pattern, and the front end of the partition plates is V-shaped. A connecting plate is fixedly connected to the top of a set of L-shaped plates.

[0007] The agitation assembly also includes a drive structure disposed above the top plate for driving the connecting plate to reciprocate;

[0008] The top plate is equipped with a purging assembly for blowing air through the coal to separate the coal powder.

[0009] Preferably, the drive structure includes a dual-head motor mounted on the upper surface of the top plate. Both output ends of the dual-head motor are fixedly connected to rotating rods. The other end of each rotating rod is fixedly connected to a turntable. Push-pull plates are rotatably connected to the opposite sides of the two turntables. The other end of each push-pull plate is hinged to one side of a connecting plate.

[0010] Preferably, a connecting frame is fixedly connected to the upper surface of each L-shaped plate, a U-shaped plate is slidably connected to the inner wall of each connecting frame, and the top of each U-shaped plate is connected to the bottom surface of the top plate.

[0011] Preferably, each of the rotating rods has a support block rotatably connected to its outer surface, and the bottom end of each support block is connected to the bottom surface of the top plate.

[0012] Preferably, the blowing assembly includes a blower mounted on the upper surface of the top plate, the output end of the blower is connected to an air supply pipe, the outer surface of the air supply pipe is connected to an exhaust pipe arranged at equal intervals, and the bottom end of each exhaust pipe extends to the bottom of the top plate and is connected to a first blower box.

[0013] Preferably, the output end of the air duct is connected to a second air blower box, which is located below the end of the conveyor belt.

[0014] Preferably, a set of lifting blocks are fixedly connected to the upper surface of each of the first air boxes, and the upper surface of each lifting block is connected to the bottom surface of the top plate.

[0015] Preferably, a reinforcing plate is fixedly connected to the back of the second blower box, and the other end of each reinforcing plate is connected to the outer surface of the support frame.

[0016] Beneficial effects:

[0017] 1. By combining the agitation and purging components, the agitation component can vertically divert, cut, and disperse the accumulated coal, breaking up the dense accumulation structure and exposing the coal dust. At the same time, the purging component can blow air through the dispersed coal to remove the coal dust, further improving the overall coal dust removal rate and effectively preventing dust pollution and accumulation problems during use, thereby ensuring combustion efficiency.

[0018] 2. By cooperating with the connecting frame and the U-shaped plate, the L-shaped plate can be suspended, thus ensuring that the L-shaped plate smoothly drives the partition plate to move and divert, cut and disperse the accumulated coal blocks. By cooperating with the supporting block and the reinforcing plate, the first and second air boxes can be reinforced and stabilized, effectively resisting the vibration generated by the wind speed and airflow, thus ensuring that the airflow jet direction is stable and without deviation, and further ensuring the efficiency of removing coal powder from the coal blocks. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0020] Figure 2 This is a three-dimensional structural diagram of the stirring component of this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the purging assembly of this utility model.

[0022] Figure 4 This is a three-dimensional structural schematic diagram of the first blower box of this utility model from a bottom view.

[0023] Figure 1-4 In the diagram, the correspondence between component names and drawing numbers is as follows:

[0024] 1. Support frame; 2. Conveyor belt; 3. Column; 4. Top plate; 5. Agitator assembly; 501. L-shaped plate; 502. Divider plate; 503. Connecting plate; 504. Dual-head motor; 505. Rotating rod; 506. Turntable; 507. Push-pull plate; 508. Connecting frame; 509. U-shaped plate; 510. Support block; 6. Blowing assembly; 601. Blower; 602. Air supply pipe; 603. Exhaust pipe; 604. First blower box; 605. Second blower box; 606. Hanging block; 607. Reinforcing plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] As attached Figure 1 To be continued Figure 4 As shown: A fuel feedstock screening and separator for power plants includes a support frame 1 and a conveyor belt 2 installed inside the support frame 1. Two sets of columns 3 are fixedly connected to the upper surface of the support frame 1, and a top plate 4 is fixedly connected to the top of the two sets of columns 3. The conveyor belt 2 can be used to transport the piled coal blocks, and the coal powder at the bottom of the coal blocks will fall from the bottom of the conveyor belt 2.

[0027] An agitation component 5 is installed on the top plate 4 to loosen the coal piled on the conveyor belt 2. The agitation component 5 includes a set of L-shaped plates 501 set below the top plate 4. Each L-shaped plate 501 has a set of equally spaced partition plates 502 fixedly connected to its bottom surface. The partition plates 502 are arranged in a cross pattern, and the front end of the partition plates 502 is V-shaped. A connecting plate 503 is fixedly connected to the top of a set of L-shaped plates 501. After the front row of partition plates 502 vertically diverts and cuts the piled coal blocks, the rear partition plates 502 will divert and cut the piled coal blocks again after diversion and cutting, so that the piled coal blocks can be continuously changed in position, which is beneficial to the removal of coal dust.

[0028] The agitation assembly 5 also includes a drive structure disposed above the top plate 4 for driving the connecting plate 503 to reciprocate. The drive structure includes a dual-head motor 504 mounted on the upper surface of the top plate 4. Two output ends of the dual-head motor 504 are fixedly connected to rotating rods 505. The other end of each rotating rod 505 is fixedly connected to a turntable 506. Push-pull plates 507 are rotatably connected to the opposite sides of the two turntables 506. The other end of each push-pull plate 507 is hinged to one side of the connecting plate 503. The dual-head motor 504... 4 will drive the rotating rod 505 to rotate, and at the same time, the turntable 506 fixed at the end of the rotating rod 505 will drive the push-pull plate 507 to make a circular motion around the center of the turntable 506. The other end of the push-pull plate 507 will synchronously drive the connecting plate 503 to move back and forth. The L-shaped plate 501 will drive the partition plate 502 to move back and forth. Multiple sets of partition plates 502 can continuously vertically divert, cut and disperse the accumulated coal blocks, break the dense accumulation structure and expose the coal powder. In addition, some of the coal powder in the middle layer of the coal blocks will fall from the conveyor belt 2.

[0029] Each L-shaped plate 501 has a connecting frame 508 fixedly connected to its upper surface. Each connecting frame 508 has a U-shaped plate 509 slidably connected to its inner wall. The top of each U-shaped plate 509 is connected to the bottom surface of the top plate 4. By using the cooperation of the connecting frame 508 and the U-shaped plate 509, the L-shaped plate 501 can be stably suspended, thereby ensuring its smooth movement. Each rotating rod 505 has a support block 510 rotatably connected to its outer surface. The bottom end of each support block 510 is connected to the bottom surface of the top plate 4. The support block 510 can support and reinforce the rotating rod 505, thereby enhancing its stability during rotation.

[0030] A purging assembly 6 is installed on the top plate 4 to separate coal dust by blowing air onto the coal. The purging assembly 6 includes a blower 601 installed on the upper surface of the top plate 4. The output end of the blower 601 is connected to an air supply pipe 602. The outer surface of the air supply pipe 602 is connected to an exhaust pipe 603 arranged at equal intervals. The bottom end of each exhaust pipe 603 extends to the bottom of the top plate 4 and is connected to a first blower box 604. Part of the air blown out by the blower 601 enters the first blower box 604 through the air supply pipe 602 and the exhaust pipe 603. The nozzle at the bottom of the first blower box 604 blows obliquely towards the coal being transported in a horizontal direction, which can remove coal dust. A set of hanging blocks 606 is fixedly connected to the upper surface of each first blower box 604. The upper surface of each hanging block 606 is connected to the bottom surface of the top plate 4. The hanging blocks 606 can be used to reinforce the first blower box 604, thereby ensuring that the air blown out is stably blown towards the coal.

[0031] The output end of the air conveyor 602 is connected to the second air box 605, which is located below the end of the conveyor belt 2. Another part of the air volume inside the air conveyor 602 will enter the second air box 605 through the air conveyor 602. As the coal falls from the end of the conveyor belt 2, the nozzle of the second air box 605 will blow air from all directions on the coal during the falling process, further improving the overall coal dust removal rate and effectively preventing dust pollution and accumulation problems during use, thereby ensuring combustion efficiency. The back of the second air box 605 is fixedly connected to a reinforcing plate 607. The other end of each reinforcing plate 607 is connected to the outer surface of the support frame 1. The reinforcing plate 607 can be used to reinforce and stabilize the second air box 605, so that it can accurately blow air to remove coal dust from the falling coal.

[0032] Working principle: During operation, the conveyor belt 2 is controlled to work. When the conveyor belt 2 transports coal, the coal dust mixed at the bottom of the coal will naturally fall down through the mesh. As the conveyor belt 2 continuously transports the coal, the dual-head motor 504 and the blower 601 are started synchronously. The dual-head motor 504 drives the rotating rod 505 to rotate. At the same time, the turntable 506 fixed at the end of the rotating rod 505 drives the push-pull plate 507 to move in a circular motion around the center of the turntable 506. The other end of the push-pull plate 507 will synchronously reciprocate to move the connecting plate 503. The L-shaped plate 501 drives the partition plate 502 to reciprocate. Multiple partition plates 502 can continuously vertically divert, cut and disperse the accumulated coal blocks, breaking up the dense accumulation. The structure exposes the coal dust, and some of the coal dust in the middle layer of the coal block will fall from the conveyor belt 2. At the same time, part of the air volume blown out by the blower 601 will enter the first blower box 604 through the air conveyor pipe 602 and the exhaust pipe 603. The nozzle at the bottom of the first blower box 604 will blow obliquely towards the coal being conveyed in a horizontal direction, which can remove the coal dust. Another part of the air volume inside the air conveyor pipe 602 will enter the second blower box 605 through the air conveyor pipe 602. As the coal falls from the end of the conveyor belt 2, the nozzle of the second blower box 605 will blow air from all directions on the coal during the falling process, further improving the overall coal dust removal rate and effectively preventing dust pollution and accumulation problems during use, thereby ensuring combustion efficiency.

Claims

1. A fuel feedstock screening and separator for a power plant, comprising a support frame (1) and a conveyor belt (2) installed inside the support frame (1), characterized in that: The upper surface of the support frame (1) is fixedly connected to two sets of columns (3), and the top of the two sets of columns (3) is fixedly connected to a top plate (4). The top plate (4) is equipped with an agitation component (5) for loosening the coal piled on the conveyor belt (2). The agitation component (5) includes a set of L-shaped plates (501) disposed below the top plate (4). Each L-shaped plate (501) has a set of partition plates (502) arranged at equal intervals fixedly connected to its bottom surface. The multiple sets of partition plates (502) are arranged in a cross pattern, and the front end of the partition plates (502) is V-shaped. The top of a set of L-shaped plates (501) is fixedly connected to a connecting plate (503). The agitation assembly (5) also includes a drive structure disposed above the top plate (4) for driving the connecting plate (503) to reciprocate; The top plate (4) is equipped with a purging assembly (6) for blowing air through the coal to separate the coal powder.

2. The power plant fuel feedstock screening and separator according to claim 1, characterized in that: The drive structure includes a dual-head motor (504) mounted on the upper surface of the top plate (4). Both output ends of the dual-head motor (504) are fixedly connected to rotating rods (505). The other end of each rotating rod (505) is fixedly connected to a turntable (506). Push-pull plates (507) are rotatably connected to the opposite sides of the two turntables (506). The other end of each push-pull plate (507) is hinged to one side of the connecting plate (503).

3. The power plant fuel feedstock screening and separator according to claim 1, characterized in that: Each L-shaped plate (501) has a connecting frame (508) fixedly connected to its upper surface, and each connecting frame (508) has a U-shaped plate (509) slidably connected to its inner wall. The top of each U-shaped plate (509) is connected to the bottom surface of the top plate (4).

4. The power plant fuel feedstock screening and separator according to claim 2, characterized in that: Each of the rotating rods (505) has a support block (510) rotatably connected to its outer surface, and the bottom end of each support block (510) is connected to the bottom surface of the top plate (4).

5. The power plant fuel feedstock screening and separator according to claim 1, characterized in that: The blowing assembly (6) includes a blower (601) installed on the upper surface of the top plate (4). The output end of the blower (601) is connected to an air supply pipe (602). The outer surface of the air supply pipe (602) is connected to exhaust pipes (603) arranged at equal intervals. The bottom end of each exhaust pipe (603) extends to the bottom of the top plate (4) and is connected to a first blower box (604).

6. The power plant fuel feedstock screening and separator according to claim 5, characterized in that: The output end of the air duct (602) is connected to a second air box (605), which is located below the end of the conveyor belt (2).

7. The power plant fuel feedstock screening and separator according to claim 5, characterized in that: Each of the first blower boxes (604) has a set of lifting blocks (606) fixedly connected to its upper surface, and the upper surface of each of the lifting blocks (606) is connected to the bottom surface of the top plate (4).

8. The power plant fuel feedstock screening and separator according to claim 6, characterized in that: The back of the second blower box (605) is fixedly connected with a reinforcing plate (607), and the other end of each reinforcing plate (607) is connected to the outer surface of the support frame (1).

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