Coal screening equipment for coal mining

Abstract

The utility model provides coal screening equipment for coal mining, and relates to the technical field of coal screening equipment, the coal screening equipment comprises a screening cabinet, a buffer assembly is arranged in the screening cabinet, the buffer assembly comprises a supporting rod, and the supporting rod is fixedly connected with the inner wall of the screening cabinet. According to the coal screening equipment for coal mining, the buffering assembly is arranged, coal enters the screening cabinet through the feeding opening, the coal makes contact with a buffering plate firstly when falling, the buffering plate and a buffering spring which are made of rubber can buffer impact force caused by coal collision, meanwhile, the opposite impact force borne by the coal is reduced, and the coal screening efficiency is improved. And under the impact force of coal collision and the gravity of the coal, the buffer plate drives the connecting rod to rotate along the supporting rod through the connecting ring, so that the coal falls on the screening plate, the impact force generated when the coal directly falls on the screening plate is effectively reduced, the service life of the device is prolonged, and the screening quality is improved.

Description

Technical Field

[0001] The utility model relates to screening equipment, in particular to coal screening equipment used in coal mine mining, and belongs to the technical field of coal screening equipment. Background Art

[0002] Coal mines are areas where humans exploit coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. Coal is the main solid fuel and a type of combustible organic rock. It is formed by natural coalification over a long geological period. It is an indispensable substance in today's society. After coal is collected from coal mines, it needs to be screened and classified.

[0003] Chinese patent CN215902187U discloses a coal screening device used in coal mining, including a screening box, a screening mechanism is arranged in the screening box, a conveying mechanism is arranged on one side of the screening box, and the screening mechanism includes a first driving rod, a second driving rod, a first convex plate, a second convex plate, a first gear, a second gear, an active driving rod, an active gear, two spring seats, two springs, two top plates, two connecting top plates, two convex head blocks, a screening plate, two introduction plates, a screening motor and a supporting plate, a first driving rod, a second driving rod, a first convex plate, a second convex plate, two spring seats, two springs, two top plates, and two connecting top plates.

[0004] When the equipment is used to screen coal, the coal will fall from the feed port onto the screening plate, but the equipment does not have the function of cushioning the falling coal. The impact force of the coal falling directly on the screening plate will cause the coal to break, reducing the number of large pieces of coal that need to be screened. Moreover, after long-term use, the coal falling directly on the screening plate will cause the screening plate to deform, thereby reducing the screening effect of the screening plate or even failing to work normally. Utility Model Content

[0005] The purpose of the utility model is to provide a coal screening device for use in coal mining in order to solve the above-mentioned problems, so as to solve the problem that the existing technology cannot cushion the falling coal, causing the coal to break and the screening mechanism to deform after long-term use, thereby causing the screening effect of the screening mechanism to decrease or even fail to work normally.

[0006] The utility model is implemented through the following technical scheme: a coal screening device used in coal mine mining, including a screening cabinet, a buffer assembly is arranged inside the screening cabinet, the buffer assembly includes a support rod, the support rod is fixedly connected to the inner wall of the screening cabinet, the outer surface of the support rod is rotatably connected with equidistantly distributed connecting rings, the outer surface of each of the connecting rings is fixedly connected with equidistantly distributed connecting rods, the outer surface of each of the connecting rods is fixedly connected with equidistantly distributed buffer springs, the interior of the screening cabinet is provided with equidistantly distributed buffer plates, the outer surface of each of the buffer plates is fixedly connected to the corresponding buffer springs, the interior of the screening cabinet is provided with a screening mechanism, and the screening mechanism includes a screening box.

[0007] Preferably, a servo motor is fixedly connected to the inner wall of the screening cabinet, an eccentric wheel is fixedly connected to the output end of the servo motor, a movable rod is movably connected to the outer surface of the eccentric wheel, the servo motor can drive the eccentric wheel to rotate, and one end of the movable rod can move following the rotation of the eccentric wheel.

[0008] Preferably, the movable rod is movably connected to a sliding rod inside, the sliding rod is fixedly connected to the outer surface of the screening box, the outer surface of the sliding rod is slidably connected to the inner wall of the screening cabinet, and the movable rod can push the sliding rod to slide along the inner wall of the screening cabinet, so that the sliding rod pushes the screening box to reciprocate.

[0009] Preferably, two moving rods are fixedly connected to the upper surface of the screening box, and a roller is provided at the upper end of each of the moving rods. The moving rods and the rollers can support the screening box.

[0010] Preferably, two rolling grooves are provided inside the screening cabinet, and the outer surface of each roller is movably connected to the corresponding rolling groove. When the sliding rod pushes the screening box, the roller rolls along the inner wall of the rolling groove. When the roller rotates, the friction between the roller and the rolling groove is small, so that the resistance encountered when pushing the screening box to move is small.

[0011] Preferably, a screening plate is plugged into the interior of the screening box, a latch is plugged into the screening box, and the outer surface of the latch is plugged into the screening plate. By plugging the screening box and the screening plate, the device can replace different screening plates according to the optional conditions of the coal, and by plugging the latch into the screening plate and the screening box at the same time, the screening plate can be fixed.

[0012] Preferably, a feed port is provided at the top of the screening cabinet, a discharge port is provided at the bottom of the screening cabinet, two observation windows are hingedly provided inside the screening cabinet, and transparent glass is provided inside the observation windows to facilitate staff to observe the coal screening operation inside the device. After opening the observation window, the staff can replace the screening plate.

[0013] The utility model provides a coal screening device used in coal mining, which has the following beneficial effects:

[0014] 1. The coal screening equipment used in the coal mine is equipped with a buffer component. The coal enters the screening cabinet through the feed port. When the coal falls, it will first contact the buffer plate. The rubber buffer plate and buffer spring can buffer the impact force caused by the impact of the coal, while reducing the opposite impact force on the coal and reducing the occurrence of coal breakage. Under the impact force of the coal impact and the gravity of the coal itself, the buffer plate drives the connecting rod to rotate along the support rod through the connecting ring, so that the coal falls on the screening plate, effectively reducing the impact force of the coal falling directly on the screening plate, extending the service life of the device, and improving the screening quality;

[0015] 2. The coal screening equipment used in the coal mine is equipped with a screening box and a screening plate. By plugging the screening plate and the screening box, screening plates with different mesh sizes can be replaced inside the screening box according to different coal screening conditions. The screening plate can be fixed by plugging the pins into the screening plate and the screening box at the same time, so that the staff can quickly disassemble and replace the screening plate, thereby enhancing the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the screening cabinet of the utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the buffer component of the utility model.

[0019] Figure 4 This is a schematic diagram of the split structure of the screening box of the utility model.

[0020] In the figure: 1-screening cabinet; 2-buffer assembly; 201-support rod; 202-connecting ring; 203-connecting rod; 204-buffer spring; 205-buffer plate; 3-screening mechanism; 301-screening box; 302-servo motor; 303-eccentric wheel; 304-movable rod; 305-sliding rod; 306-moving rod; 307-roller; 308-rolling groove; 309-screening plate; 310-latch; 4-feeding port; 5-discharging port; 6-observation window. DETAILED DESCRIPTION

[0021] The utility model embodiment provides a coal screening device used in coal mining.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A coal screening device used in coal mining includes a screening cabinet 1. A buffer assembly 2 is arranged inside the screening cabinet 1. The buffer assembly 2 includes a support rod 201. The support rod 201 is fixedly connected to the inner wall of the screening cabinet 1. The outer surface of the support rod 201 is rotatably connected with connecting rings 202 distributed at equal distances. The support rod 201 supports the connecting ring 202, and the connecting ring 202 can rotate along the outer surface of the support rod 201.

[0023] The outer surface of each connecting ring 202 is fixedly connected with connecting rods 203 distributed at equal distances, and the outer surface of each connecting rod 203 is fixedly connected with buffer springs 204 distributed at equal distances. The interior of the screening cabinet 1 is provided with buffer plates 205 distributed at equal distances, and the outer surface of each buffer plate 205 is fixedly connected with the corresponding buffer spring 204. The buffer plate 205 is set to be made of rubber material. The rubber buffer plate 205 and buffer spring 204 can reduce the impact force caused by the impact of coal, and at the same time reduce the opposite impact force on the coal.

[0024] Please refer to Figure 2 A servo motor 302 is fixedly connected to the inner wall of the screening cabinet 1, an eccentric wheel 303 is fixedly connected to the output end of the servo motor 302, a movable rod 304 is movably connected to the outer surface of the eccentric wheel 303, the servo motor 302 can drive the eccentric wheel 303 to rotate, and one end of the movable rod 304 can move following the rotation of the eccentric wheel 303.

[0025] Please refer to Figure 2 The movable rod 304 is internally movably connected with a sliding rod 305, the sliding rod 305 is fixedly connected to the outer surface of the screening box 301, and the outer surface of the sliding rod 305 is slidably connected to the inner wall of the screening cabinet 1. The movable rod 304 can push the sliding rod 305 to slide along the inner wall of the screening cabinet 1, so that the sliding rod 305 pushes the screening box 301 to reciprocate.

[0026] Please refer to Figure 2 Two moving rods 306 are fixedly connected to the upper surface of the screening box 301 , and a roller 307 is provided at the upper end of each moving rod 306 . The moving rods 306 and the rollers 307 can support the screening box 301 .

[0027] Please refer to Figure 2 Two rolling grooves 308 are provided inside the screening cabinet 1, and the outer surface of each roller 307 is movably connected with the corresponding rolling groove 308. When the sliding rod 305 pushes the screening box 301, the roller 307 rolls along the inner wall of the rolling groove 308. When the roller 307 rotates, the friction between the roller 307 and the rolling groove 308 is small, so that the resistance encountered when pushing the screening box 301 to move is small.

[0028] Please refer to Figure 2 and Figure 4 A screening mechanism 3 is arranged inside the screening cabinet 1, and the screening mechanism 3 includes a screening box 301, a screening plate 309 is plugged into the screening box 301, a latch 310 is plugged into the screening box 301, and the outer surface of the latch 310 is plugged into the screening plate 309. By plugging the screening box 301 and the screening plate 309, the device can replace different screening plates 309 according to the optional conditions of the coal, and by plugging the latch 310 into the screening plate 309 and the screening box 301 at the same time, the screening plate 309 can be fixed.

[0029] Please refer to Figure 1 and Figure 2 A feed port 4 is provided at the top of the screening cabinet 1, a discharge port 5 is provided at the bottom of the screening cabinet 1, two observation windows 6 are hingedly provided inside the screening cabinet 1, and transparent glass is provided inside the observation windows 6 to facilitate the staff to observe the coal screening operation inside the device. After opening the observation window 6, the staff can replace the screening plate 309.

[0030] When the utility model is in use, coal enters the screening cabinet 1 through the feed port 4, and contacts the buffer plate 205 when the coal falls. The rubber buffer plate 205 and the buffer spring 204 can buffer the impact force caused by the impact of the coal, and at the same time reduce the opposite impact force on the coal, thereby reducing the occurrence of coal breakage. Under the impact force of the coal impact and the gravity of the coal itself, the buffer plate 205 drives the connecting rod 203 to rotate along the support rod 201 through the connecting ring 202, so that the coal falls on the screening plate 309, effectively reducing the impact force of the coal falling directly on the screening plate 309, extending the service life of the equipment, and improving the screening quality. Then, by starting the servo motor 30 The eccentric wheel 303 is driven to rotate, so that the movable rod 304 can drive the sliding rod 305 to slide back and forth. When the sliding rod 305 drives the screening box 301 to move back and forth, the moving rod 306 on the screening box 301 moves in the rolling groove 308 through the roller 307, thereby realizing the screening of coal and preventing coal from piling up. The staff can observe the screening operation of the coal inside the device through the observation window 6, and according to different screening conditions for the coal, the screening plate 309 with different mesh sizes can be replaced inside the screening box 301, and then the screening plate 309 can be fixed by plugging the latch 310 into the screening plate 309 and the screening box 301 at the same time, thereby enhancing the applicability of the device.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A coal screening device for use in coal mining, comprising a screening cabinet (1), characterized in that: A buffer assembly (2) is provided inside the screening cabinet (1), and the buffer assembly (2) comprises a support rod (201), the support rod (201) is fixedly connected to the inner wall of the screening cabinet (1), the outer surface of the support rod (201) is rotatably connected to a connecting ring (202) distributed at an equal distance, the outer surface of each connecting ring (202) is fixedly connected to a connecting rod (203) distributed at an equal distance, the outer surface of each connecting rod (203) is fixedly connected to a buffer spring (204) distributed at an equal distance, and the interior of the screening cabinet (1) is provided with buffer plates (205) distributed at an equal distance, and the outer surface of each buffer plate (205) is fixedly connected to a corresponding buffer spring (204); A screening mechanism (3) is arranged inside the screening cabinet (1), and the screening mechanism (3) comprises a screening box (301).

2. The coal screening device used in coal mining according to claim 1, characterized in that: A servo motor (302) is fixedly connected to the inner wall of the screening cabinet (1), an eccentric wheel (303) is fixedly connected to the output end of the servo motor (302), and a movable rod (304) is movably connected to the outer surface of the eccentric wheel (303).

3. The coal screening device used in coal mining according to claim 2, characterized in that: The movable rod (304) is movably connected to a sliding rod (305) inside, the sliding rod (305) is fixedly connected to the outer surface of the screening box (301), and the outer surface of the sliding rod (305) is slidably connected to the inner wall of the screening cabinet (1).

4. The coal screening device for coal mining according to claim 1, characterized in that: Two moving rods (306) are fixedly connected to the upper surface of the screening box (301), and a roller (307) is provided at the upper end of each moving rod (306).

5. The coal screening device used in coal mining according to claim 4, characterized in that: Two rolling grooves (308) are provided inside the screening cabinet (1), and the outer surface of each roller (307) is movably connected to the corresponding rolling groove (308).

6. The coal screening device for coal mining according to claim 1, characterized in that: A screening plate (309) is plugged into the interior of the screening box (301), a latch (310) is plugged into the screening box (301), and an outer surface of the latch (310) is plugged into the screening plate (309).

7. The coal screening device used in coal mining according to claim 1, characterized in that: A material inlet (4) is provided at the top of the screening cabinet (1), a material outlet (5) is provided at the bottom of the screening cabinet (1), and two observation windows (6) are hingedly provided inside the screening cabinet (1).

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