Rotor type coal mill feeding air locking device

Abstract

The utility model discloses a rotor type coal mill feeding air locking device which comprises a box body, the top of the box body is fixedly communicated with a coal feeding hopper, the front face of the box body is fixedly connected with a motor, the output end of the motor is fixedly connected with a transmission rod, and the transmission rod penetrates through the box body and is rotationally connected with the box body. A rotating roller is fixedly connected to the outer wall of the transmission rod, a plurality of partition plates are fixedly connected to the outer wall of the rotating roller, a sealing plate is installed at the tail end of each partition plate, and a disassembling and assembling mechanism is arranged between each partition plate and the corresponding sealing plate. The motor drives the transmission rod to drive the rotating roller, the partition plate and the sealing plate to rotate at a constant speed, and uniform feeding of coal mine raw materials can be accurately controlled; first air locking is achieved through rotation of the partition plate and the sealing plate, and then multiple air locking design of secondary air locking is completed through cooperation of the air locking plate, the baffle and the torsional spring.

Description

Technical Field

[0001] This utility model relates to the technical field of airlock devices, and in particular to an airlock device for feeding a rotor-type coal mill. Background Technology

[0002] In the coal processing industry, the coal mill feed airlock device is a key piece of equipment to ensure the stable operation of the coal mill system. Its main function is to achieve uniform feeding during the process of conveying raw materials to the coal mill and effectively prevent air leakage within the system, thus ensuring production efficiency and safety.

[0003] Existing coal mill feeding airlock devices have many problems in practical applications. Regarding feeding, most devices struggle to achieve uniform and stable feeding, leading to uneven raw material distribution inside the coal mill, affecting grinding efficiency and product quality. As for the airlock function, existing devices typically employ only a single airlock structure, resulting in poor airlock performance, easily causing unstable air pressure within the system, increasing energy consumption, and even affecting the normal operation of the entire production line. To solve these problems, this application proposes a rotor-type coal mill feeding airlock device. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a rotor-type coal mill feeding airlock device. The device uses a motor to drive the transmission rod, which drives the rotating roller, the dividing plate and the sealing plate to rotate at a uniform speed, so as to accurately control the uniform feeding of coal raw materials. The first airlock is achieved by rotating the dividing plate and the sealing plate, and the second airlock is achieved by using the airlock plate, the baffle and the torsion spring. The multiple airlock design completes the second airlock.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rotor-type coal mill feeding airlock device includes a housing. A coal feed hopper is fixedly connected to the top of the housing. A motor is fixedly connected to the front of the housing. A transmission rod is fixedly connected to the output end of the motor. The transmission rod passes through the housing and is rotatably connected to it. A rotating roller is fixedly connected to the outer wall of the transmission rod. Multiple dividing plates are fixedly connected to the outer wall of the rotating roller. A sealing plate is installed at the end of each dividing plate. A disassembly and assembly mechanism is provided between each dividing plate and its corresponding sealing plate. Two rotating shafts are rotatably connected to the housing. An airlock plate is fixedly connected to the outer wall of each rotating shaft. Two baffles are fixedly connected to the inner wall of the housing. A reset mechanism is provided on each rotating shaft.

[0007] Preferably, the disassembly and assembly mechanism includes a mounting plate fixedly connected to the end of the dividing plate, and two locking bolts are installed on the mounting plate, both of which are threadedly connected to the sealing plate.

[0008] Preferably, the reset mechanism includes two grooves formed in the housing, the two ends of the rotating shaft are rotatably connected to the inner wall of the corresponding groove, and torsion springs are sleeved on the outer walls of both ends of the rotating shaft, with the two ends of each torsion spring being fixedly connected to the rotating shaft and the inner wall of the groove, respectively.

[0009] Preferably, the mounting plate has a through hole, the locking bolt has a through hole, the sealing plate has a threaded groove, and the outer wall of the locking bolt and the inner wall of the threaded groove are respectively provided with matching external threads and internal threads.

[0010] Preferably, the plurality of the dividing plates are distributed at equal intervals on the outer wall of the rotating roller.

[0011] Preferably, an inspection port is provided through the back of the box, a rotating plate is rotatably connected to the inner wall of the inspection port, a U-shaped handle is fixedly connected to the outer wall of the rotating plate, and a rubber protective sleeve is provided on the outer wall of the U-shaped handle.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. By driving the transmission rod with a motor, the rotating roller, dividing plate and sealing plate are rotated at a uniform speed, which can accurately control the uniform feeding of coal raw materials, avoid uneven distribution of raw materials inside the coal mill, effectively improve grinding efficiency and product quality, and solve the problem of unstable feeding in existing equipment.

[0014] 2. The design employs a multi-layered airlock system, which uses a rotating partition plate and sealing plate to achieve the first airlock, and then utilizes an airlock plate, baffle, and torsion spring to complete the second airlock. Compared with the existing single airlock structure, this design greatly improves the airlock effect, stabilizes the air pressure within the system, reduces energy consumption, and ensures the normal operation of the production line.

[0015] 3. The sealing plate is connected to the dividing plate through the mounting plate and locking bolts, forming a detachable disassembly and assembly mechanism, which facilitates the installation and replacement of the sealing plate, greatly improves maintenance efficiency, reduces enterprise operating costs, and improves the shortcomings of inconvenient maintenance of existing equipment.

[0016] In summary, by driving the transmission rod with a motor to rotate the rotating roller, the dividing plate, and the sealing plate at a uniform speed, the uniform feeding of coal raw materials can be precisely controlled; the rotation of the dividing plate and the sealing plate achieves the first air lock, and the air lock plate, baffle, and torsion spring work together to complete the second air lock, forming a multi-air lock design. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of a rotor-type coal mill feeding airlock device proposed in this utility model;

[0018] Figure 2This is a rear view structural diagram of a rotor-type coal mill feeding airlock device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of a rotor-type coal mill feeding airlock device proposed in this utility model;

[0020] Figure 4 This is a partial structural schematic diagram of a rotor-type coal mill feeding airlock device proposed in this utility model;

[0021] Figure 5 This is a partial structural cross-sectional view of a rotor-type coal mill feeding airlock device proposed in this utility model.

[0022] In the diagram: 1. Box body, 2. Coal feed hopper, 3. Motor, 4. Transmission rod, 5. Rotating roller, 6. Dividing plate, 7. Sealing plate, 8. Air lock plate, 9. Baffle, 10. Rotating shaft, 11. Groove, 12. Torsion spring, 13. Rotating plate, 14. U-shaped handle, 15. Mounting plate, 16. Locking bolt. Detailed Implementation

[0023] 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.

[0024] Reference Figures 1-2 A rotor-type coal mill feeding airlock device includes a housing 1, which serves as the main body of the entire device and provides installation and operating space for other components. A coal feed hopper 2 is fixedly connected to the top of the housing 1. The coal feed hopper 2 is used to guide external coal raw materials into the housing 1. A motor 3 is fixedly connected to the front of the housing 1. A transmission rod 4 is fixedly connected to the output end of the motor 3. The transmission rod 4 passes through the housing 1 and is rotatably connected to it. A rotating roller 5 is fixedly connected to the outer wall of the transmission rod 4. Multiple dividing plates 6 are fixedly connected to the outer wall of the rotating roller 5. The multiple dividing plates 6 are evenly distributed on the outer wall of the rotating roller 5. The rotation of the dividing plates 6 divides the space inside the housing, realizing feeding control and initial airlock.

[0025] Each partition plate 6 has a sealing plate 7 installed at its end. The sealing plate 7 fits into the inner wall of the box. The end of the sealing plate 7 near the inner wall of the box 1 has a sealing element to enhance the sealing of the partition and ensure the airtight effect. Each partition plate 6 has a disassembly and assembly mechanism with its corresponding sealing plate 7. The disassembly and assembly mechanism includes a mounting plate 15 fixedly connected to the end of the partition plate 6. Two locking bolts 16 are installed on the mounting plate 15. Both locking bolts 16 are threaded to the sealing plate 7. The sealing plate 7 and the mounting plate 15 are detachably connected by the locking bolts 16. The mounting plate 15 has a through hole through which the locking bolts 16 pass. The sealing plate 7 has a threaded groove. The outer wall of the locking bolt 16 and the inner wall of the threaded groove have matching external threads and internal threads, respectively. The fastening connection is achieved by the threaded engagement.

[0026] A maintenance port is provided through the back of the housing 1, providing a passage for internal maintenance of the device. The locking bolts 16 can be installed and removed, and the sealing plate 7 can be replaced. A rotating plate 13 is rotatably connected to the inner wall of the maintenance port. The rotating plate 13 can rotate around the inner wall of the maintenance port to open and close the maintenance port. A U-shaped handle 14 is fixedly connected to the outer wall of the rotating plate 13. The outer wall of the U-shaped handle 14 is covered with a rubber protective sleeve, which increases grip comfort and friction for easy operation.

[0027] Two rotating shafts 10 are rotatably connected to the housing 1. Each rotating shaft 10 has an air-locking plate 8 fixedly connected to its outer wall. The air-locking plate 8 rotates under the support of the rotating shaft 10, thereby dividing and locking the space inside the housing 1. Two baffles 9 are fixedly connected to the inner wall of the housing 1. The baffles 9 limit the rotation angle of the air-locking plate 8, ensuring that the air-locking plate 8 performs air-locking operations in the appropriate position. Each rotating shaft 10 is equipped with a reset mechanism, which includes two grooves 11 formed inside the housing 1. The two ends of the rotating shaft 10 are rotatably connected to the inner wall of the corresponding groove 11. Torsion springs 12 are sleeved on the outer walls of both ends of the rotating shaft 10. The two ends of each torsion spring 12 are fixedly connected to the rotating shaft 10 and the inner wall of the groove 11, respectively. The torsion springs 12 provide reset power for the rotating shaft 10 and the air-locking plate 8, so that they automatically reset after feeding, thereby achieving continuous air-locking.

[0028] In this invention, external coal raw materials are injected into the housing 1 through the coal feed hopper 2. The motor 3 is started, and the output end of the motor 3 drives the transmission rod 4, the rotating roller 5, multiple dividing plates 6, and the sealing plate 7 to rotate. The uniform rotation of the multiple dividing plates 6 and the sealing plate 7 can feed the coal raw materials evenly, and the rotation of the multiple dividing plates 6 can divide the upper and lower areas of the rotating roller 5, realizing the first air-locking operation. Subsequently, the falling coal raw materials come into contact with the air-locking plate 8, causing the air-locking plate 8 to rotate and open. During this process, the torsion spring 12 is tightened. When the coal falls, the tightened torsion spring 12 resets the two air-locking plates 8, and the two baffles 9 limit the air-locking plates 8 and the ends of the two air-locking plates 8 abut against each other, completing the division of the upper and lower areas of the air-locking plate 8, and the air-locking operation can be performed again.

Claims

1. A rotor-type coal mill feeding airlock device, comprising a housing (1), characterized in that, The top of the box (1) is fixedly connected to a coal feed hopper (2). The front of the box (1) is fixedly connected to a motor (3). The output end of the motor (3) is fixedly connected to a transmission rod (4). The transmission rod (4) passes through the box (1) and is rotatably connected to it. The outer wall of the transmission rod (4) is fixedly connected to a rotating roller (5). The outer wall of the rotating roller (5) is fixedly connected to multiple dividing plates (6). Each dividing plate (6) has a sealing plate (7) installed at its end. Each dividing plate (6) has a disassembly and assembly mechanism between it and its corresponding sealing plate (7). The box (1) is provided with two rotating shafts (10) that are rotatably connected to it. Each rotating shaft (10) has an air lock plate (8) fixedly connected to its outer wall. The inner wall of the box (1) has two baffles (9). Each rotating shaft (10) has a reset mechanism.

2. The rotor-type coal mill feeding airlock device according to claim 1, characterized in that, The disassembly and assembly mechanism includes a mounting plate (15) fixedly connected to the end of the dividing plate (6), and two locking bolts (16) are installed on the mounting plate (15), both of which are threadedly connected to the sealing plate (7).

3. The rotor-type coal mill feeding airlock device according to claim 1, characterized in that, The reset mechanism includes two grooves (11) formed in the housing (1). The two ends of the rotating shaft (10) are rotatably connected to the inner wall of the corresponding groove (11). The outer walls of both ends of the rotating shaft (10) are fitted with torsion springs (12). The two ends of each torsion spring (12) are fixedly connected to the rotating shaft (10) and the inner wall of the groove (11).

4. The rotor-type coal mill feeding airlock device according to claim 2, characterized in that, The mounting plate (15) has a through hole, the locking bolt (16) is provided through the through hole, the sealing plate (7) has a threaded groove, and the outer wall of the locking bolt (16) and the inner wall of the threaded groove are respectively provided with matching external threads and internal threads.

5. The rotor-type coal mill feeding airlock device according to claim 1, characterized in that, Multiple of the aforementioned dividing plates (6) are distributed at equal intervals on the outer wall of the rotating roller (5).

6. The rotor-type coal mill feeding airlock device according to claim 1, characterized in that, The back of the box (1) is provided with an inspection port, the inner wall of the inspection port is rotatably connected to a rotating plate (13), the outer wall of the rotating plate (13) is fixedly connected to a U-shaped handle (14), and the outer wall of the U-shaped handle (14) is covered with a rubber protective sleeve.

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