Coal mine screening device with classified screening function

Abstract

The utility model relates to the technical field of screening devices, in particular to a coal mine screening device with a grading screening function, which comprises a mounting rack, a fixed frame is mounted on the inner side of the mounting rack, and the fixed frame is arranged on the inner side of the mounting rack; when coal is screened, a motor is started, under the action of a cam, the coal on the top of the upper fixing plate and the gravity of the coal, the two fixing plates are made to vibrate in a reciprocating mode, a first through hole and a second through hole are made to vibrate up and down in a reciprocating mode to screen the coal, and in the up-and-down reciprocating movement process of the first through hole and the second through hole, the coal screening efficiency is improved. By arranging the cleaning mechanism, the inner wall of the first through hole can be cleaned through a first cleaning ring, and the inner wall of the second through hole can be cleaned through a second cleaning ring, so that part of substances adhering to the inner walls of the first through hole and the second through hole can be scraped; and the risk that materials adhere to the inner walls of the first through holes and the inner walls of the second through holes to cause blockage is avoided, and therefore the coal screening effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a coal mine screening device with a graded screening function. Background Art

[0002] Coal mines are reasonable spaces dug by humans when digging geological layers rich in coal, usually including tunnels, shafts and mining faces, etc. Coal is the main solid fuel and a kind of combustible organic rock. In coal mining, in order to meet the needs of different uses, remove impurities and improve the combustion efficiency and environmental performance of coal, it is necessary to screen the coal mines.

[0003] The Chinese patent "A multi-layer coal screening device" authorization announcement number is "CN 218360611U". By setting up a double-layer filtering mechanism, the mined coal can be double-screened, thereby separating coal of different sizes. By setting up a vibration mechanism, the first filter plate and the second filter plate can vibrate continuously, thereby avoiding clogging of the first filter plate and the second filter plate during the coal screening process.

[0004] The above application can prevent coal blocks from clogging the sieve holes, but the coal itself contains moisture and other impurities, which will cause the coal surface to have a certain degree of adhesion. When the coal passes through the sieve holes, some of the material on the coal surface will adhere to the inner wall of the sieve holes. The material adhered to the inner wall cannot be removed by simply vibrating the filter plate. When the accumulation gradually increases, it will still cause the sieve holes to be clogged, affecting the screening effect.

[0005] Therefore, a coal mine screening device with a graded screening function is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a coal mine screening device with a graded screening function in order to solve the above-mentioned problem, which improves the problem that the coal itself contains moisture and other impurities, which will cause the coal surface to have a certain degree of adhesion. When the coal passes through the sieve holes, some materials on the coal surface will adhere to the inner wall of the sieve holes. The materials adhered to the inner wall cannot be removed by only vibrating the filter plate. When the accumulation gradually increases, the sieve holes will still be blocked, affecting the screening effect.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme: a coal mine screening device with a graded screening function, comprising: a mounting frame, a fixed frame is installed on the inner side of the mounting frame, the inner wall of the fixed frame is slidably connected with two fixed plates, the surface of the upper fixed plate is provided with first through holes distributed in a rectangular row, the surface of the lower fixed plate is provided with second through holes distributed in a rectangular array, and a cleaning mechanism is arranged on the inner side of the first through hole; wherein the cleaning mechanism comprises a plurality of first cleaning rings and a plurality of second cleaning rings, the surface of the first cleaning ring is slidably connected with the inner wall of the first through hole, the surface of the second cleaning ring is slidably connected with the inner wall of the second through hole, the bottom ends of the first cleaning ring and the second cleaning ring are both fixedly connected with two round rods, the bottom ends of the round rods are fixedly connected with a cross bar laterally, the two ends of the cross bar are both fixedly connected with fixed rods, the two ends of the fixed rods are both fixedly connected with the inner wall of the fixed frame, and the bottom end of the upper fixed plate is provided with a driving assembly.

[0008] Preferably, the driving assembly includes a motor fixedly connected to one end of the fixed frame, the output shaft of the motor passes through the interior of the fixed frame and is fixedly connected to a cam, the bottom end of the upper fixed plate contacts the surface of the cam, and one side of the bottom end of the upper fixed plate is fixedly connected to two connecting rods, and the bottom end of the connecting rod is fixedly connected to the top of the lower fixed plate. When screening coal, by starting the motor, the two fixed plates are reciprocated by the action of the cam, the coal on the top of the upper fixed plate and their own gravity, which is conducive to the first through hole and the second through hole to reciprocate up and down to screen the coal, and drive the first cleaning ring to clean the inner wall of the first through hole, and the second cleaning ring to clean the inner wall of the second through hole.

[0009] Preferably, a baffle is fixedly connected to one side of the top of the lower fixed plate, and the top of the baffle contacts the bottom of the upper fixed plate. Under the action of the baffle, the coal falling from the upper fixed plate is prevented from affecting the cam, ensuring the normal rotation of the cam.

[0010] Preferably, the first cleaning rings are distributed in a rectangular array, and the number of the first cleaning rings is the same as the number of the first through holes, thereby ensuring the cleaning effect of the first through holes.

[0011] Preferably, the plurality of second cleaning rings are distributed in a rectangular array, and the number of the second cleaning rings is the same as the number of the second through holes, thereby ensuring the cleaning effect on the second through holes.

[0012] Preferably, the upper ends of the inner walls of the first cleaning ring and the second cleaning ring form an angle with the horizontal plane. When the first through hole and the second through hole move downward, the first cleaning ring and the second cleaning ring can better scrape off the sticky substances on the inner walls of the first through hole and the second through hole.

[0013] Preferably, both ends of the two fixing plates are fixedly connected with sliders, and the surfaces of the sliders are slidably connected to the inner wall of the fixing frame, which is conducive to limiting the up and down movement of the two fixing plates.

[0014] Preferably, both sides of the top of the fixed plate are fixedly connected with protective plates, and one side of the protective plate is in contact with the inner wall of the fixed frame, which is conducive to protecting the chute provided on the inner wall of the fixed frame and preventing coal from entering the chute and affecting the movement of the slider.

[0015] The beneficial effects of the utility model are:

[0016] 1. When screening coal, by starting the motor, the two fixed plates are vibrated back and forth under the action of the cam, the coal on the top of the upper fixed plate and its own gravity, which is conducive to making the first through hole and the second through hole vibrate up and down to screen the coal. In addition, in the process of the first through hole and the second through hole moving up and down, the setting of the cleaning mechanism uses the first cleaning ring to clean the inner wall of the first through hole, and the second cleaning ring to clean the inner wall of the second through hole, which is conducive to scraping off some of the materials adhering to the inner walls of the first through hole and the second through hole, avoiding the risk of blockage caused by the materials adhering to the inner walls of the first through hole and the second through hole, thereby ensuring the screening effect of the coal;

[0017] 2. Under the action of the baffle, the cam and the coal are blocked to prevent the coal from affecting the rotation of the cam, thus ensuring the normal rotation of the cam and improving the stability of the device during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the fixing frame of the utility model;

[0020] Figure 3 It is a cross-sectional view of the fixing plate of the utility model;

[0021] Figure 4 This is a schematic diagram of the cleaning mechanism structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the first cleaning ring of the utility model.

[0023] In the figure: 1, mounting frame; 2, fixing frame; 3, fixing plate; 4, first through hole; 5, second through hole; 6, cleaning mechanism; 601, first cleaning ring; 602, second cleaning ring; 603, round rod; 604, cross rod; 605, fixing rod; 606, driving assembly; 6061, motor; 6062, cam; 6063, connecting rod; 6064, slider; 6065, protective plate; 6066, baffle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] When implementing: Figure 1-5 As shown, a coal mine screening device with a graded screening function comprises: a mounting frame 1, a fixing frame 2 is mounted on the inner side of the mounting frame 1, two fixing plates 3 are slidably connected to the inner wall of the fixing frame 2, a first through hole 4 distributed in a rectangular row is opened on the surface of the upper fixing plate 3, a second through hole 5 distributed in a rectangular array is opened on the surface of the lower fixing plate 3, a cleaning mechanism 6 is arranged on the inner side of the first through hole 4; wherein the cleaning mechanism 6 comprises a plurality of first cleaning rings 601 and a plurality of second cleaning rings 602, the first The surface of the cleaning ring 601 is slidably connected to the inner wall of the first through hole 4, the surface of the second cleaning ring 602 is slidably connected to the inner wall of the second through hole 5, the bottom ends of the first cleaning ring 601 and the second cleaning ring 602 are fixedly connected with two round rods 603, the bottom ends of the transverse round rods 603 are fixedly connected with cross bars 604, both ends of the cross bars 604 are fixedly connected with fixed rods 605, both ends of the fixed rods 605 are fixedly connected to the inner wall of the fixed frame 2, and the bottom end of the upper fixed plate 3 is provided with a driving assembly 606. The diameter of the first through hole 4 is larger than the diameter of the second through hole 5. When screening coal, the coal is poured into the top of the upper fixed plate 3, and the first through hole 4 performs the first screening on the coal. Coal smaller than the diameter of the first through hole 4 falls on the lower fixed plate 3, and the second through hole 5 is used for secondary screening.

[0026] like Figure 2 and Figure 3As shown, the driving assembly 606 includes a motor 6061 fixedly connected to one end of the fixed frame 2, the output shaft of the motor 6061 passes through the interior of the fixed frame 2 and is fixedly connected to a cam 6062, the bottom end of the upper fixed plate 3 contacts the surface of the cam 6062, and two connecting rods 6063 are fixedly connected to one side of the bottom end of the upper fixed plate 3, and the bottom end of the connecting rod 6063 is fixedly connected to the top end of the lower fixed plate 3.

[0027] When the coal is screened, the motor 6061 is started by the controller, and the output shaft of the motor 6061 drives the cam 6062 to rotate. Since the coal on the top of the upper fixed plate 3 has a certain gravity, the bottom of the upper fixed plate 3 is always in contact with the surface of the cam 6062 under the action of the weight of the coal and its own weight. When the highest point of the cam 6062 contacts the bottom end of the upper fixed plate 3, the cam 6062 pushes the upper fixed plate 3 to move upward to the highest distance, and under the action of the connecting rod 6063, it drives the lower fixed plate 3 to move upward to the highest distance synchronously. At this time, the surface of the first cleaning ring 601 contacts the lower end of the inner wall of the first through hole 4, and the second cleaning ring 60 2 contacts with the lower end of the inner wall of the second through hole 5. When the cam 6062 rotates from the highest point to the lowest point and contacts with the bottom end of the upper fixed plate 3, the two fixed plates 3 will move downward at the same time. Therefore, under the action of the continuous rotation of the cam 6062, the two fixed plates 3 will vibrate reciprocatingly up and down to screen the coal. At the same time, when the upper fixed plate 3 moves downward, the inner wall of the first through hole 4 will be attached to the surface of the first cleaning ring 601 and move downward. At this time, the first cleaning ring 601 will clean the inner wall of the first through hole 4, and the inner wall of the second through hole 5 will be attached to the surface of the second cleaning ring 602 and move downward. At this time, the second cleaning ring 602 will clean the inner wall of the second through hole 5.

[0028] like Figure 3 As shown, a baffle 6066 is fixedly connected to one side of the top of the lower fixed plate 3, and the top of the baffle 6066 contacts the bottom of the upper fixed plate 3. The baffle 6066 is arranged at the other end of the cam 6062, so that a gap is formed between the coal and the cam 6062.

[0029] like Figure 3 and Figure 4 As shown, a plurality of first cleaning rings 601 are distributed in a rectangular array, and the number of the first cleaning rings 601 is the same as the number of the first through holes 4. The positions and numbers of the first cleaning rings 601 and the first through holes 4 correspond one to one.

[0030] like Figure 3 As shown, the plurality of second cleaning rings 602 are distributed in a rectangular array, and the number of the second cleaning rings 602 is the same as the number of the second through holes 5. The positions and numbers of the second cleaning rings 602 and the second through holes 5 correspond one to one.

[0031] like Figure 5 As shown, the upper ends of the inner walls of the first cleaning ring 601 and the second cleaning ring 602 form an angle with the horizontal plane. The opening diameters of the first cleaning ring 601 and the second cleaning ring 602 are larger than the inner wall diameters of the first cleaning ring 601 and the second cleaning ring 602.

[0032] like Figure 3 As shown, both ends of the two fixed plates 3 are fixedly connected with sliders 6064, and the surface of the sliders 6064 is slidably connected to the inner wall of the fixed frame 2. Both sides of the top of the fixed plate 3 are fixedly connected with protective plates 6065, and one side of the protective plates 6065 is in contact with the inner wall of the fixed frame 2. The inner wall of the fixed frame 2 is provided with a slide groove matching the sliders 6064, and the positions of the multiple protective plates 6065 correspond to the positions of the multiple slide grooves. When the fixed plate 3 drives the protective plates 6065 to move up and down, the protective plates 6065 will block the slide groove.

[0033] When the utility model is in use, when screening coal, the coal is poured into the top of the upper fixed plate 3, and the motor 6061 is started by the controller. The output shaft of the motor 6061 drives the cam 6062 to rotate. Under the action of the coal on the top of the upper fixed plate 3 and its own gravity, when the cam 6062 continues to rotate, the upper fixed plate 3 is driven to drive the lower fixed plate 3 to synchronously perform up and down reciprocating vibration to screen the coal. At this time, the first through hole 4 performs the first screening of the coal, and the coal smaller than the diameter of the first through hole 4 falls on the lower fixed plate 3, and the second through hole 5 is used for secondary screening. At the same time, in the process of the two fixed plates 3 reciprocating up and down, the inner wall of the first through hole 4 will be moved up and down in contact with the surface of the first cleaning ring 601. At this time, the first cleaning ring 601 will clean the inner wall of the first through hole 4, and the inner wall of the second through hole 5 will be moved up and down in contact with the surface of the second cleaning ring 602. At this time, the second cleaning ring 602 will clean the inner wall of the second through hole 5, thereby preventing some materials from sticking to the inner walls of the first through hole 4 and the second through hole 5.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coal mine screening device with graded screening function, characterized in that: include: A mounting frame (1), a fixing frame (2) is installed on the inner side of the mounting frame (1), two fixing plates (3) are slidably connected to the inner wall of the fixing frame (2), the surface of the upper fixing plate (3) is provided with first through holes (4) distributed in a rectangular row, the surface of the lower fixing plate (3) is provided with second through holes (5) distributed in a rectangular array, and a cleaning mechanism (6) is arranged on the inner side of the first through hole (4); The cleaning mechanism (6) comprises a plurality of first cleaning rings (601) and a plurality of second cleaning rings (602); the surface of the first cleaning ring (601) is slidably connected to the inner wall of the first through hole (4); the surface of the second cleaning ring (602) is slidably connected to the inner wall of the second through hole (5); the bottom ends of the first cleaning ring (601) and the second cleaning ring (602) are fixedly connected to two round rods (603); the bottom ends of the round rods (603) are fixedly connected to a cross rod (604) in the transverse direction; both ends of the cross rod (604) are fixedly connected to a fixing rod (605); both ends of the fixing rod (605) are fixedly connected to the inner wall of the fixing frame (2); and a driving assembly (606) is provided at the bottom end of the upper fixing plate (3).

2. A coal mine screening device with a graded screening function according to claim 1, characterized in that: The driving assembly (606) comprises a motor (6061) fixedly connected to one end of the fixed frame (2); the output shaft of the motor (6061) passes through the interior of the fixed frame (2) and is fixedly connected to a cam (6062); the bottom end of the upper fixed plate (3) contacts the surface of the cam (6062); two connecting rods (6063) are fixedly connected to one side of the bottom end of the upper fixed plate (3); the bottom end of the connecting rod (6063) is fixedly connected to the top end of the lower fixed plate (3).

3. The coal mine screening device with graded screening function according to claim 1 is characterized in that: A baffle (6066) is fixedly connected to one side of the top end of the lower fixed plate (3), and the top end of the baffle (6066) contacts the bottom end of the upper fixed plate (3).

4. The coal mine screening device with graded screening function according to claim 1, characterized in that: The plurality of first cleaning rings (601) are distributed in a rectangular array, and the number of the first cleaning rings (601) is the same as the number of the first through holes (4).

5. The coal mine screening device with graded screening function according to claim 1, characterized in that: The plurality of second cleaning rings (602) are distributed in a rectangular array, and the number of the second cleaning rings (602) is the same as the number of the second through holes (5).

6. The coal mine screening device with graded screening function according to claim 1, characterized in that: The upper ends of the inner walls of the first cleaning ring (601) and the second cleaning ring (602) both form an angle with the horizontal plane.

7. The coal mine screening device with graded screening function according to claim 1, characterized in that: Both ends of the two fixing plates (3) are fixedly connected with sliders (6064), and the surfaces of the sliders (6064) are slidably connected to the inner wall of the fixing frame (2).

8. The coal mine screening device with graded screening function according to claim 1, characterized in that: Both sides of the top end of the fixing plate (3) are fixedly connected with protective plates (6065), and one side of the protective plate (6065) is in contact with the inner wall of the fixing frame (2).

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