Classified screening and resource utilization device for thermal power boiler ash slag

Abstract

The utility model discloses a thermal power boiler ash's grading screening and resource utilization device, including the bottom plate, the bottom plate upper end surface fixed mounting has the supporting plate, the supporting plate outer wall is fixedly installed through the sliding opening prism rod, the prism rod outer wall sliding installation has the sliding block, the sliding block bottom wall is connected with the sliding opening inner bottom wall through the reset mechanism, the sliding block end fixedly installed has the screening box, the screening box upper end surface fixed mounting has with the internal communication feeding hopper. The utility model discloses through setting coarse screen, fine screen, extrusion frame and cam etc. component, through setting coarse screen, fine screen, extrusion frame and cam etc. component, second motor drives the rotation axis and the cam rotation, and the cam pushes the extrusion frame and makes the screening box along the prism rod sliding, and the cooperation reset spring realizes the screening box reciprocating motion, and coarse screen and fine screen can carry out two -stage grading screening to ash, and reciprocating motion can avoid the ash and accumulate on the screen, and promote screening efficiency and grading accuracy.

Description

Technical Field

[0001] This utility model relates to the field of thermal power environmental protection and ash and slag resource recycling technology, and in particular to a device for grading, screening and resource utilization of ash and slag from thermal power boilers. Background Technology

[0002] Thermal power boilers generate a large amount of ash during operation. If this ash is directly piled up or landfilled, it will not only occupy land resources, but may also cause pollution to the surrounding environment due to dust diffusion and leakage of harmful substances. At the same time, the components of different particle sizes in the ash have different utilization values. After reasonable classification and treatment, it can be used in building material preparation and other fields to achieve resource recycling.

[0003] In existing technologies, the screening structure of ash and slag screening devices is simple and mostly relies on a single screen plate for screening, making it difficult to achieve accurate grading of ash and slag of different particle sizes. Moreover, ash and slag tend to accumulate on the screen plate during the screening process, resulting in low screening efficiency. Furthermore, the feeding stage lacks an effective pretreatment structure, which makes ash and slag prone to agglomeration and blockage of the feeding channel, affecting the continuous operation of the device and making it impractical. Therefore, it is necessary to redesign the grading, screening, and resource utilization device for ash and slag from thermal power boilers to address the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for the grading, screening, and resource utilization of ash and slag from thermal power boilers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A grading, screening, and resource utilization device for ash and slag from a thermal power boiler includes a base plate. A support plate is fixedly installed on the upper surface of the base plate. A prismatic rod is fixedly installed on the outer wall of the support plate through a sliding opening. A slider is slidably installed on the outer wall of the prismatic rod. The bottom wall of the slider is connected to the inner bottom wall of the sliding opening through a reset mechanism. A screening box is fixedly installed at the end of the slider. A feeding hopper communicating with the interior is fixedly installed on the upper surface of the screening box. A coarse screen plate and a fine screen plate are fixedly installed inside the screening box. Both the coarse and fine screen plates are inclined. A first collection box that mates with the bottom of the fine screen plate is slidably installed on the outer wall of the screening box through a pull-out opening. A fixing plate is fixedly installed on the outer wall of the first collection box. The fixing plate is fixedly connected to the outer wall of the screening box by bolts. Screening openings that cooperate with coarse screen plates and fine screen plates are respectively opened on the outer walls of the two sides of the screening box. Guide channels that cooperate with the two screening openings are fixedly installed on the outer walls of the two sides of the screening box. Two second collection boxes that cooperate with the guide channels are slidably installed on the upper surface of the bottom plate through the mounting frame. An extrusion frame is fixedly installed on the outer bottom wall of the screening box. A rotating shaft is rotatably installed on the upper surface of the bottom plate through the connecting frame. A second motor connected to the rotating shaft is fixedly installed on the outer wall of the connecting frame. A cam is fixedly installed on the outer wall of the rotating shaft.

[0006] Preferably, the reset mechanism includes a reset spring mounted on the outer wall of the prism rod, and the two ends of the reset spring are elastically connected to the inner bottom wall of the sliding opening and the bottom wall of the slider, respectively.

[0007] Preferably, a stirring shaft is rotatably installed inside the feeding hopper, a first motor connected to the stirring shaft is fixedly installed on the outer wall of the feeding hopper through a support frame, and multiple stirring rods are fixedly installed on the outer wall of the stirring shaft through a mounting sleeve.

[0008] Preferably, two mixed-flow fan pumps are fixedly installed on the upper surface of the base plate by means of a mounting seat. Dust collection hoods are fixedly installed on the outer walls of the inlet pipes of the two mixed-flow fan pumps. The two dust collection hoods are respectively located on the back of the corresponding second collection box. Dust collection bags are fixedly installed on the outer walls of the outlet pipes of the two mixed-flow fan pumps by means of clamps.

[0009] Preferably, a controller is fixedly mounted on the upper surface of the base plate via a mounting plate, and the controller is electrically connected to the first motor, the second motor, and the two mixed-flow fan pumps.

[0010] The beneficial effects of this utility model are: 1. By setting components such as coarse screen plate, fine screen plate, extrusion frame and cam, the second motor drives the rotating shaft and cam to rotate. The cam pushes the extrusion frame to make the screening box slide along the prismatic rod. With the help of the return spring, the screening box reciprocates. The coarse screen plate and fine screen plate can perform two-stage grading and screening of ash and slag. The reciprocating motion can prevent ash and slag from accumulating on the screen plate, thereby improving screening efficiency and grading accuracy.

[0011] 2. By setting up components such as a stirring shaft, mounting sleeve, and stirring rod, the first motor drives the stirring shaft and stirring rod to rotate, which can stir and disperse the ash and slag entering the feeding hopper, prevent the ash and slag from clumping and blocking the feeding channel, ensure smooth feeding, and ensure continuous operation of the device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the grading, screening, and resource utilization device for ash and slag from a thermal power boiler proposed in this utility model. Figure 2 for Figure 1 A schematic diagram of the vertical section structure; Figure 3 This is a schematic diagram of the back structure of the grading, screening and resource utilization device for ash and slag from thermal power boilers proposed in this utility model. Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point A in the diagram; Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point B in the diagram; Figure 6 for Figure 3 A magnified schematic diagram of the structure at point C.

[0013] In the diagram: 1. Base plate, 2. Support plate, 3. Prism rod, 4. Slider, 5. Return spring, 6. Screening box, 7. Feeding hopper, 8. Stirring shaft, 9. Support frame, 10. First motor, 11. Mounting sleeve, 12. Stirring rod, 13. Coarse screen plate, 14. Fine screen plate, 15. First collection box, 16. Guide channel, 17. Mounting frame, 18. Second collection box, 19. Extrusion frame, 20. Connecting frame, 21. Rotating shaft, 22. Second motor, 23. Cam, 24. Mixed flow fan pump, 25. Dust hood, 26. Dust collector bag, 27. Mounting plate, 28. Controller. Detailed Implementation

[0014] 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.

[0015] Reference Figure 1-6 A grading, screening, and resource utilization device for ash and slag from a thermal power boiler includes a base plate 1. A support plate 2 is fixedly installed on the upper surface of the base plate 1. A prismatic rod 3 is fixedly installed on the outer wall of the support plate 2 through a sliding opening. A slider 4 is slidably installed on the outer wall of the prismatic rod 3. The bottom wall of the slider 4 is connected to the inner bottom wall of the sliding opening through a reset mechanism. A screening box 6 is fixedly installed at the end of the slider 4. A feeding hopper 7 communicating with the interior is fixedly installed on the upper surface of the screening box 6. A coarse screen plate 13 and a fine screen plate 14 are fixedly installed inside the screening box 6. Both the coarse screen plate 13 and the fine screen plate 14 are inclined. A first collection box 15, which cooperates with the bottom of the fine screen plate 14, is slidably installed on the outer wall of the screening box 6 through a pull-out opening. A fixing plate is fixedly installed on the outer wall of the screening box 6. The fixing plate is fixedly connected to the outer wall of the screening box 6 by bolts. Screening openings that cooperate with the coarse screen plate 13 and the fine screen plate 14 are respectively opened on the outer walls of both sides of the screening box 6. Guide channels 16 that cooperate with the two screening openings are fixedly installed on the outer walls of both sides of the screening box 6. Two second collection boxes 18 that cooperate with the guide channels 16 are slidably installed on the upper end face of the bottom plate 1 through the mounting frame 17. An extrusion frame 19 is fixedly installed on the outer bottom wall of the screening box 6. A rotating shaft 21 is rotatably installed on the upper end face of the bottom plate 1 through the connecting frame 20. A second motor 22 connected to the rotating shaft 21 is fixedly installed on the outer wall of the connecting frame 20. A cam 23 is fixedly installed on the outer wall of the rotating shaft 21.

[0016] Furthermore, the inner wall of the sliding opening is tightly fitted with the outer wall of the prism rod 3, which can prevent the slider 4 from deviating when sliding, ensuring that the screening box 6 moves along a fixed trajectory. The inclination direction of the coarse screen plate 13 and the fine screen plate 14 are both facing the corresponding screening opening, which facilitates the smooth sliding out of the graded ash and reduces the residue on the screen plate. The top opening of the first collection box 15 is completely aligned with the bottom of the fine screen plate 14, which can fully receive the ash and slag screened by the fine screen plate 14.

[0017] The reset mechanism includes a reset spring 5 installed on the outer wall of the prism rod 3. The two ends of the reset spring 5 are elastically connected to the inner bottom wall of the sliding opening and the bottom wall of the slider 4, respectively.

[0018] Furthermore, the return spring 5 is made of a high-elasticity alloy material, which can withstand long-term reciprocating stretching and compression during the screening process, extend its service life, and avoid elastic decay caused by material fatigue.

[0019] The feeding hopper 7 has a rotating stirring shaft 8 inside. The outer wall of the feeding hopper 7 is fixedly installed with a first motor 10 connected to the stirring shaft 8 via a support frame 9. Multiple stirring rods 12 are fixedly installed on the outer wall of the stirring shaft 8 via a mounting sleeve 11.

[0020] Furthermore, the support frame 9 is made of metal and is welded and fixed to the outer wall of the feeding hopper 7, which can enhance the stability of the first motor 10 installation and prevent the motor from shaking during operation. Multiple stirring rods 12 are evenly distributed along the axial direction of the stirring shaft 8, and the length of the stirring rods 12 is adapted to the internal width of the feeding hopper 7, which can fully disperse the clumps of ash and slag in the feeding hopper 7 and prevent blockage of the feeding channel.

[0021] Two mixed-flow fan pumps 24 are fixedly installed on the upper surface of the base plate 1 by mounting brackets. Dust hoods 25 are fixedly installed on the outer wall of the inlet pipes of the two mixed-flow fan pumps 24. The two dust hoods 25 are respectively located on the back of the corresponding second collection box 18. Dust collection bags 26 are fixedly installed on the outer wall of the outlet pipes of the two mixed-flow fan pumps 24 by clamps.

[0022] Furthermore, the opening of the dust hood 25 faces upwards towards the second collection box 18, which can accurately absorb the dust that diffuses from the second collection box 18 during the screening process. The clamp is an adjustable structure that can tightly fix the dust collector bag 26 to the outlet pipe to prevent dust leakage, while also facilitating the subsequent disassembly of the dust collector bag 26 for cleaning or replacement.

[0023] A controller 28 is fixedly mounted on the upper surface of the base plate 1 via a mounting plate 27. The controller 28 is electrically connected to the first motor 10, the second motor 22, and the two mixed-flow fan pumps 24.

[0024] Furthermore, the outer casing of the controller 28 is provided with a dustproof sealing strip to prevent ash and dust from entering the controller 28 and corroding the circuit components. The controller 28 panel is provided with operating status indicator lights and independent control buttons for the first motor 10, the second motor 22 and the mixed flow fan pump 24, so that the operator can intuitively grasp the working status of each component and quickly start, stop or adjust the operation of the equipment when needed.

[0025] In use, the controller 28 starts the first motor 10, the second motor 22, and the mixed-flow fan pump 24 to feed the ash and slag from the thermal power boiler into the screening box 6 through the feeding hopper 7. At this time, the first motor 10 starts and drives the stirring shaft 8 to rotate. The mounting sleeve 11 on the outer wall of the stirring shaft 8 rotates synchronously with the stirring shaft 8, which in turn drives the stirring rod 12 on the mounting sleeve 11 to rotate. The stirring rod 12 stirs and disperses the ash and slag entering the feeding hopper 7 to prevent the ash and slag from clumping and blocking the feeding channel of the feeding hopper 7. The dispersed ash and slag fall into the screening box 6 along the feeding hopper 7 and first come into contact with the screen. Inside the screening box 6, the coarse screen plate 13 is activated. Simultaneously, the second motor 22 starts and drives the rotating shaft 21 to rotate. The cam 23 on the outer wall of the rotating shaft 21 rotates synchronously with the rotating shaft 21. When the cam 23 rotates to abut against the inner wall of the extrusion frame 19 on the outer bottom wall of the screening box 6, it pushes the screening box 6 to slide along the prismatic rod 3 on the support plate 2. The slider 4 slides synchronously with the screening box 6 on the prismatic rod 3. When the cam 23 rotates to disengage from the extrusion frame 19, the return spring 5 on the outer wall of the prismatic rod 3 generates an elastic return force, pulling the slider 4 to drive the screening box 6 to return to its original position. This cycle is repeated to achieve the reciprocating vibration of the screening box 6. Under the reciprocating vibration of the screening box 6, the coarse screen plate 13 performs preliminary screening of the ash residue. The larger ash residue slides along the inclined coarse screen plate 13 and enters the guide channel 16 through the screening opening on the side wall of the screening box 6 corresponding to the coarse screen plate 13. Then, it falls into one of the second collection boxes 18 in the mounting frame 17 on the bottom plate 1 through the guide channel 16. The smaller ash residue passes through the coarse screen plate 13 and falls onto the fine screen plate 14 in the screening box 6. The fine screen plate 14 performs secondary screening of the ash residue under the vibration of the screening box 6. The ash residue with a moderate size slides along the inclined fine screen plate 14 and enters another guide channel 16 through the screening opening on the side wall of the screening box 6 corresponding to the fine screen plate 14. Finally, it falls into another second collection box 18. The smallest ash residue passes through the fine screen plate 14 and falls directly into the first collection box 15 in the pull-out opening on the outer wall of the screening box 6. During this process, the mixed-flow fan pump 24 continues to operate, absorbing the dust generated during the screening process around the second collection box 18 through the dust suction hood 25 on its inlet pipe. The dust enters the dust collector bag 26 through the outlet pipe of the mixed-flow fan pump 24, where it filters and collects the dust to prevent it from spreading into the working environment. When the ash and slag in the first collection box 15 or the second collection box 18 reach a certain amount, the controller 28 shuts down the first motor 10, the second motor 22, and the mixed-flow fan pump 24 to stop the device from operating. Then, the bolts on the outer wall fixing plate of the first collection box 15 are removed, and the first collection box 15 is pulled out from the pull-out opening of the screening box 6 to empty the ash and slag inside. The second collection box 18 is then pulled out directly from the mounting frame 17 to empty the ash and slag inside. After cleaning, the first collection box 15 is reset and fixed with bolts, and the second collection box 18 is placed back into the mounting frame 17. The controller 28 is then used to start all components again to continue the ash and slag grading and screening operation.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for grading, screening, and resource utilization of ash and slag from thermal power boilers, comprising a base plate (1), characterized in that, A support plate (2) is fixedly installed on the upper surface of the base plate (1). A prismatic rod (3) is fixedly installed on the outer wall of the support plate (2) through a sliding opening. A slider (4) is slidably installed on the outer wall of the prismatic rod (3). The bottom wall of the slider (4) is connected to the inner bottom wall of the sliding opening through a reset mechanism. A screening box (6) is fixedly installed at the end of the slider (4). A feeding hopper (7) communicating with the interior is fixedly installed on the upper surface of the screening box (6). A coarse screen plate (13) and a fine screen plate (14) are fixedly installed inside the screening box (6). Both the coarse screen plate (13) and the fine screen plate (14) are inclined. A first collection box (15) that cooperates with the bottom of the fine screen plate (14) is slidably installed on the outer wall of the screening box (6) through a pull-out opening. A fixing plate is fixedly installed on the outer wall of the first collection box (15). The fixing plate is fixedly connected to the outer wall of the screening box (6) by bolts. The outer walls of the screening box (6) on both sides are respectively provided with screening openings that cooperate with the coarse screen plate (13) and the fine screen plate (14). The outer walls of the screening box (6) on both sides are respectively fixedly installed with guide channels (16) that cooperate with the two screening openings. The upper end face of the bottom plate (1) is slidably installed with two second collection boxes (18) that cooperate with the guide channels (16) through the mounting frame (17). The bottom wall of the screening box (6) is fixedly installed with an extrusion frame (19). The upper end face of the bottom plate (1) is rotatably installed with a rotating shaft (21) through a connecting frame (20). The outer wall of the connecting frame (20) is fixedly installed with a second motor (22) that is connected to the rotating shaft (21). The outer wall of the rotating shaft (21) is fixedly installed with a cam (23).

2. The grading, screening, and resource utilization device for ash and slag from thermal power boilers according to claim 1, characterized in that, The reset mechanism includes a reset spring (5) installed on the outer wall of the prism rod (3), and the two ends of the reset spring (5) are elastically connected to the inner bottom wall of the sliding opening and the bottom wall of the slider (4), respectively.

3. The grading, screening, and resource utilization device for ash and slag from thermal power boilers according to claim 2, characterized in that, The feeding hopper (7) is rotatably installed with a stirring shaft (8). The outer wall of the feeding hopper (7) is fixedly installed with a first motor (10) connected to the stirring shaft (8) through a support frame (9). The outer wall of the stirring shaft (8) is fixedly installed with multiple stirring rods (12) through an installation sleeve (11).

4. The grading, screening, and resource utilization device for ash and slag from thermal power boilers according to claim 3, characterized in that, Two mixed-flow fan pumps (24) are fixedly installed on the upper surface of the base plate (1) by mounting brackets. Dust collection hoods (25) are fixedly installed on the outer wall of the inlet pipes of the two mixed-flow fan pumps (24). The two dust collection hoods (25) are respectively located on the back of the corresponding second collection box (18). Dust collection bags (26) are fixedly installed on the outer wall of the outlet pipes of the two mixed-flow fan pumps (24) by clamps.

5. The grading, screening, and resource utilization device for ash and slag from thermal power boilers according to claim 4, characterized in that, The controller (28) is fixedly installed on the upper surface of the base plate (1) via the mounting plate (27). The controller (28) is electrically connected to the first motor (10), the second motor (22), and two mixed-flow fan pumps (24).

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