Screening device for coal gangue and organic waste co-pyrolysis

Abstract

The utility model provides a kind of screening device for coal gangue and organic waste co-pyrolysis, including support frame and two screening cylinders being symmetrically fixed on support frame, two screening cylinders are conical structure, one partition is equipped between two described screening cylinders, and conical cylinder screen is respectively equipped in two described screening cylinders, two screening cylinders are respectively provided with material conveying mechanism on two sides of facing away, two described material conveying mechanism is respectively provided with feed hopper, two described material conveying mechanism is fixed with rotating shaft between, rotating shaft of the partition two sides is respectively equipped with multiple groups of breaking hammer and multiple groups of cutter, two described screening cylinder lower surface is communicated with material discharge hopper, and two described screening cylinder is respectively communicated with waste discharge hopper on material conveying mechanism side;The screening device is finely screened fine particle and secondary crushing is carried out to large particle, so that coal gangue and organic waste reach co-pyrolysis requirement, so that it is fully contacted and improves pyrolysis efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of screening devices, specifically relating to a screening device for co-pyrolysis of coal gangue and organic waste. Background Technology

[0002] In the co-pyrolysis of coal gangue and organic waste, particle size is a crucial parameter, directly impacting the pyrolysis efficiency and product quality. During co-pyrolysis, the particle size of both coal gangue and organic waste should be moderate to ensure uniform distribution and sufficient contact within the pyrolysis furnace. Excessively large particles may lead to incomplete pyrolysis, while excessively small particles may increase the risk of system blockage. Therefore, it is generally necessary to control the particle size within a suitable range. Organic waste typically requires crushing before pyrolysis to increase its surface area, thereby improving pyrolysis efficiency. Controlling particle size helps ensure uniform heating and reaction rate during the pyrolysis process. Pre-treatment of coal gangue and organic waste involves drying and crushing. However, excessive small particles or powdery raw materials generated during crushing, as well as overly large particles unsuitable for co-pyrolysis, result in low co-pyrolysis efficiency or a risk of blockage.

[0003] In view of this, and to address the aforementioned problems, this utility model proposes a screening device that achieves the co-pyrolysis requirements of coal gangue and organic waste by finely screening small particles and secondary crushing large particles, thereby ensuring sufficient contact between them and improving pyrolysis efficiency. Utility Model Content

[0004] This utility model provides a screening device for the co-pyrolysis of coal gangue and organic waste. Through fine screening of small particles and secondary crushing of large particles, the device enables the coal gangue and organic waste to meet the requirements for co-pyrolysis, ensuring sufficient contact and improving pyrolysis efficiency. The specific solution is as follows:

[0005] A screening device for co-pyrolysis of coal gangue and organic waste includes a support frame and two screening cylinders symmetrically fixed to the support frame. The two screening cylinders are conical in shape, and a partition plate is provided between the two screening cylinders. Conical screens are provided inside the two screening cylinders respectively. Material conveying mechanisms are provided on opposite sides of the two screening cylinders. Feed hoppers are provided on the two material conveying mechanisms respectively. A rotating shaft is fixed between the two material conveying mechanisms. Multiple sets of crushing hammers and multiple sets of cutters are respectively sleeved on the rotating shafts on both sides of the partition plate. A material discharge hopper is connected to the lower surface of the two screening cylinders. A waste discharge hopper is connected to the side of the two screening cylinders near the material conveying mechanism respectively.

[0006] Furthermore, the material conveying mechanism includes a conveying shaft, a spiral conveying blade, an mounting cylinder, and a conveying motor. The mounting cylinder is detachably connected to the end of the screening cylinder. The conveying shaft passes through the mounting cylinder and is connected to the rotating shaft. The spiral conveying blade is disposed on the outer periphery of the conveying shaft. The conveying motor is fixedly connected to the support frame. Pulleys are respectively sleeved on the output shaft of the conveying motor and on the conveying shaft outside the mounting cylinder. The two pulleys are connected by an annular belt. The feed hopper is connected to the upper part of the mounting cylinder.

[0007] Furthermore, both ends of the two conical screens are rotatably connected to the screening cylinders, and mounting plates are fixedly connected to the upper surfaces of the two screening cylinders. Each mounting plate is equipped with a drive motor, and drive gears are sleeved on the output shafts of the two drive motors. The upper surfaces of the screening cylinders corresponding to the two drive gears are respectively provided with through grooves suitable for the drive gears to pass through. Annular racks that mesh with the drive gears are fixedly connected to the outer periphery of the two conical screens. The drive motors and the conveying motors are arranged in opposite directions.

[0008] Furthermore, limiting grooves are respectively opened at both ends of the two screening cylinders, and limiting rings are respectively provided at both ends of the two conical screens.

[0009] Furthermore, stirring rods are symmetrically provided on both sides of the rotating shaft between the breaker and the cutter assembly and the spiral conveyor blades. Stirring blades are fixedly connected to the stirring rods, and the stirring blades on both sides of the rotating shaft are set at the same inclination angle as the conical screen.

[0010] Furthermore, the support frame is equipped with a control panel, which contains a controller. The conveying motor and the drive motor are electrically connected to the controller via signal lines.

[0011] Furthermore, the two screening cylinders each include an upper half and a lower half, which are fixedly connected by bolts. The finished material discharge hopper and the waste material discharge hopper are respectively arranged on the lower surface of the lower half.

[0012] The beneficial effects of this utility model are:

[0013] This utility model discloses a screening device for co-pyrolysis of coal gangue and organic waste. It comprises two screening cylinders, a conical screen, a material conveying mechanism, a crusher, and a cutter. Crushed coal gangue and organic waste are fed into their respective feed hoppers. The material conveying mechanism transports them to the conical screen, where fine coal gangue and organic waste fall through the screen holes and are discharged from the waste discharge hopper. Larger particles continue to fall and are crushed or cut by the crusher and cutter, causing the crushed or cut coal gangue and organic waste to fall downwards and be discharged from the waste discharge hopper. This device allows for direct mixing of the screened coal gangue and organic waste, achieving the co-pyrolysis requirements while reducing mixing steps and improving subsequent pyrolysis efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the inside of the screening cylinder of this utility model.

[0016] Figure 3 This is a schematic diagram of the internal structure of the conical screen of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Support frame; 2. Screening cylinder; 3. Divider plate; 4. Conical screen; 5. Material conveying mechanism; 501. Spiral conveyor blade; 502. Mounting cylinder; 503. Conveyor motor; 504. Annular belt; 6. Feed hopper; 7. Shaft; 8. Crusher; 9. Finished material discharge hopper; 10. Waste material discharge hopper; 11. Mounting plate; 12. Drive motor; 13. Drive gear; 14. Annular rack; 15. Limiting ring; 16. Stirring rod; 17. Stirring blade; 18. Detailed Implementation

[0018] 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.

[0019] See Figure 1-3A screening device for co-pyrolysis of coal gangue and organic waste includes a support frame 1 and two screening cylinders 2 symmetrically fixed to the support frame 1. The two screening cylinders 2 are conical in shape, with their large ends facing each other. A partition plate 3 is provided between the two screening cylinders 2. Conical screens 4 are respectively provided inside the two screening cylinders 2, wherein coal gangue or organic waste can pass through the space between the outer side of the conical screen 4 and the inner wall of the screening cylinder 2. Material conveying mechanisms 5 are respectively provided on opposite sides of the two screening cylinders 2. A separate feed hopper 6 is provided, and a rotating shaft 7 is fixedly connected between the two material conveying mechanisms 5. The rotating shaft 7 movably passes through the partition plate 3. Multiple sets of crushing hammers 8 and multiple sets of cutters 9 are respectively fitted on the rotating shaft 7 on both sides of the partition plate 3. Adjacent crushing hammers 8 or cutters 9 are staggered. The crushing hammers 8 and cutters 9 are used to crush or cut large particles of coal gangue or large sections of organic waste. The lower surface of the two screening cylinders 2 is connected to the material discharge hopper 10, and the side of the two screening cylinders 2 near the material conveying mechanism 5 is respectively connected to the waste discharge hopper 11.

[0020] The preferred material conveying mechanism 5 includes a conveying shaft, a spiral conveying blade 501, an mounting cylinder 502, and a conveying motor 503. The mounting cylinder 502 is detachably connected to the end of the screening cylinder 2. The conveying shaft passes through the mounting cylinder 502 and is connected to the rotating shaft 7. The spiral conveying blade 501 is disposed on the outer periphery of the conveying shaft. The conveying motor 503 is fixedly connected to the support frame 1. Pulleys are respectively fitted on the output shaft of the conveying motor 503 and the conveying shaft outside the mounting cylinder 502. The two pulleys are connected by an annular belt 504. The feed hopper 6 is connected to the upper part of the mounting cylinder 502. In use, coal gangue and organic waste are respectively fed into the corresponding feed hopper 6, and the spiral conveying blade 501 is driven to rotate by the start of the conveying motor 503 and conveyed to the beam-cone cylindrical screen 4 through the spiral conveying blade 501.

[0021] The preferred two conical screens 4 are rotatably connected to the screening cylinders 2 at both ends. Mounting plates 12 are fixedly connected to the upper surfaces of the two screening cylinders 2, and drive motors 13 are respectively mounted on the two mounting plates 12. Drive gears 14 are respectively sleeved on the output shafts of the two drive motors 13. The upper surfaces of the screening cylinders 2 corresponding to the two drive gears 14 are respectively provided with through grooves suitable for the drive gears 14 to pass through. Annular racks 15 that mesh with the drive gears 14 are fixedly connected to the outer periphery of the two conical screens 4. The drive motors 13 and the conveying motors 503 are arranged in opposite directions, which can effectively improve the screening efficiency of the conical screens 4. In use, the start of the drive motors 13 drives the drive gears 14 to rotate, which in turn drives the annular racks 15 to rotate, thereby driving the two conical screens 4 to rotate, thus improving the screening efficiency of the two conical screens 4.

[0022] The two screening cylinders 2 are preferably provided with limiting grooves at both ends, and the two conical screens 4 are provided with limiting rings 16 extending outward from both ends, which can ensure the stability of the two conical screens 4 when rotating.

[0023] The preferred breaker hammer 8 and cutter 9 assembly are symmetrically provided with stirring rods 17 on both sides of the rotating shaft 7 between the spiral conveyor blade 501. Stirring blades 18 are fixedly connected to the stirring rods 17. The stirring blades 18 on both sides of the rotating shaft 7 are set at the same inclination angle as the conical screen 4. The stirring rods 17 and stirring blades 18 can agitate the coal gangue or organic waste, causing it to fall down from the screen holes of the conical screen 4 more quickly, further improving the screening efficiency.

[0024] The preferred support frame 1 is equipped with a control panel, which contains a controller. The conveyor motor 503 and the drive motor 13 are electrically connected to the controller via signal lines.

[0025] The preferred two screening cylinders 2 each include an upper half and a lower half, which are fixedly connected by bolts. The finished material discharge hopper 10 and the waste material discharge hopper 11 are respectively located on the lower surface of the lower half. The upper half of the two screening cylinders 2 can be removed by unscrewing the bolts, which facilitates internal maintenance.

[0026] The working principle of this screening device is as follows: First, crushed coal gangue and organic waste are fed into the corresponding feed hoppers 6, and the conveying motors 503 on both sides are started simultaneously. The two conveying motors 503 respectively convey the coal gangue and organic waste to the two conical screens 4 through the spiral conveyor blades 501. At this time, the fine coal gangue and organic waste fall from the screen holes of the conical screens 4 and are discharged from the waste discharge hopper 11. The finished material gradually rolls down and is discharged from the finished material discharge hopper 11. Among them, the large particles continue to roll down and are crushed or cut by the crushing hammer 8 and the cutter 9 respectively, so that the crushed or cut coal gangue and organic waste fall down and are discharged through the finished material discharge hopper 11. This not only meets the requirements of co-pyrolysis of coal gangue and organic waste, but also reduces the mixing steps of the finished material, improves the screening efficiency, and thus improves the subsequent pyrolysis efficiency.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A screening device for co-pyrolysis of coal gangue and organic waste, characterized in that: The system includes a support frame (1) and two screening cylinders (2) symmetrically fixed to the support frame (1). The two screening cylinders (2) are conical in shape. A partition plate (3) is provided between the two screening cylinders (2). Conical screens (4) are provided inside the two screening cylinders (2). Material conveying mechanisms (5) are provided on opposite sides of the two screening cylinders (2). Feed hoppers (6) are provided on the two material conveying mechanisms (5). A rotating shaft (7) is fixed between the two material conveying mechanisms (5). Multiple sets of breaker hammers (8) and multiple sets of cutters (9) are respectively fitted on the rotating shafts (7) on both sides of the partition plate (3). A material discharge hopper (10) is connected to the lower surface of the two screening cylinders (2). A waste discharge hopper (11) is connected to the side of the two screening cylinders (2) near the material conveying mechanism (5).

2. The screening device for co-pyrolysis of coal gangue and organic waste according to claim 1, characterized in that: The material conveying mechanism (5) includes a conveying shaft, a spiral conveying blade (501), an mounting cylinder (502), and a conveying motor (503). The mounting cylinder (502) is detachably connected to the end of the screening cylinder (2). The conveying shaft passes through the mounting cylinder (502) and is connected to the rotating shaft (7). The spiral conveying blade (501) is set on the outer periphery of the conveying shaft. The conveying motor (503) is fixedly connected to the support frame (1). Pulleys are respectively fitted on the output shaft of the conveying motor (503) and on the conveying shaft outside the mounting cylinder (502). The two pulleys are connected by an annular belt (504). The feed hopper (6) is connected to the upper part of the mounting cylinder (502).

3. The screening device for co-pyrolysis of coal gangue and organic waste according to claim 2, characterized in that: The two conical screens (4) are rotatably connected to the screening cylinder (2) at both ends. The upper surfaces of the two screening cylinders (2) are respectively fixed with mounting plates (12). The two mounting plates (12) are respectively equipped with drive motors (13). The output shafts of the two drive motors (13) are respectively fitted with drive gears (14). The upper surfaces of the screening cylinders (2) corresponding to the two drive gears (14) are respectively provided with through grooves suitable for the drive gears (14) to pass through. The outer periphery of the two conical screens (4) is respectively fixed with annular racks (15) that mesh with the drive gears (14). The drive motors (13) and the conveying motors (503) are arranged in opposite directions.

4. The screening device for co-pyrolysis of coal gangue and organic waste according to claim 1, characterized in that: Limiting grooves are provided at both ends of the two screening cylinders (2), and limiting rings (16) extend outward from both ends of the two conical screens (4).

5. A screening device for co-pyrolysis of coal gangue and organic waste according to claim 2, characterized in that: The breaker (8) and cutter (9) assembly and the spiral conveyor (501) are respectively provided with stirring rods (17) on both sides of the shaft (7), and stirring blades (18) are fixedly connected to the stirring rods (17). The stirring blades (18) on both sides of the shaft (7) are set at the same tilt angle as the conical screen (4).

6. A screening device for co-pyrolysis of coal gangue and organic waste according to claim 3, characterized in that: The support frame (1) is equipped with a control panel, and the control panel is equipped with a controller. The conveying motor (503) and the drive motor (13) are electrically connected to the controller through signal lines.

7. A screening device for co-pyrolysis of coal gangue and organic waste according to claim 1, characterized in that: The two screening cylinders (2) each include an upper half and a lower half, which are fixedly connected by bolts. The material discharge hopper (10) and the waste discharge hopper (11) are respectively arranged on the lower surface of the lower half.

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