Coal screening device

Abstract

The utility model relates to the field of coal, and discloses a coal screening device which comprises four supporting legs, a workbench is fixedly installed on the upper portions of the four supporting legs, four buffer springs are fixedly installed between the workbench and the four supporting legs, a vibration motor is fixedly installed outside the workbench, and the vibration motor is connected with the workbench. The coal screening device comprises a workbench, an upper screening disc is fixedly installed on one side of the interior of the workbench, a lower screening disc is fixedly installed on the other side of the interior of the workbench, an inclined plate is fixedly installed outside the workbench, a vibration mechanism is arranged on the upper side of the inclined plate, and coal is scattered before screening by controlling an adjusting bolt and a grab handle; and meanwhile, coal or clay blocked in the sieve tray is cleaned, the sieving efficiency is improved, and the service life of the device can be prolonged.

Description

Technical Field

[0001] The utility model relates to the field of coal, in particular to a coal screening device. Background Art

[0002] The coal screening device is a production device used in the coal industry. It crushes the coal and fills it into the device. The screen can then separate the coal particles of different sizes so that they can be used in different fields, replacing human labor and improving production efficiency.

[0003] A Chinese patent provides a device suitable for coal screening, with publication number CN208340920U, comprising a shell, a baffle, a primary feed buffer rotary roller, a secondary feed buffer rotary roller, a rotating shaft, a rotating wheel with gear teeth, a stepped screen plate, and a reduction drive mechanism. A feed port is provided on one side of the top of the shell, and a large particle discharge port and a small particle discharge port are provided at the bottom. The baffle is disposed in the shell below the feed port. The two inner walls of the shell are sequentially provided with obliquely arranged primary feed buffer rotary rollers, secondary feed buffer rotary rollers, and multiple rotating shafts from top to bottom. Each rotating shaft is provided with multiple rotating wheels with gear teeth and corresponding stepped screen plates in parallel. When screening coal, the utility model has low noise, is not easily clogged, has low energy consumption, requires little maintenance, and is not prone to clogging subsequent crushers during the screening process for sticky coal containing a certain amount of moisture.

[0004] The above device has the effect of solving the problem of coal blocking the device, but in the actual production process, coal has adhesiveness, and insufficient screening and sieve plate blocking may occur during the screening process, affecting the efficiency of coal screening. Therefore, it is necessary to provide a coal screening device. Utility Model Content

[0005] The purpose of the utility model is to provide a coal screening device to solve the problems of insufficient screening caused by coal adhesion during the screening process of the existing device and the blockage of the screen plate affecting the coal screening efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal screening device, comprising four supporting legs, a workbench fixedly installed on the upper part of the four supporting legs, four buffer springs fixedly installed between the workbench and the four supporting legs, a vibration motor fixedly installed on the outside of the workbench, an upper sieve plate fixedly installed at a position on one side of the interior of the workbench, a lower sieve plate fixedly installed at a position on the other side of the interior of the workbench, an inclined plate fixedly installed on the outside of the workbench, and a vibration mechanism provided on the upper side of the inclined plate. The vibration mechanism includes two supporting columns, a cross bar is fixedly installed between the two supporting columns, two limit rods are slidably installed in parallel at a position passing through one side of the cross bar, a vibration seat is fixedly installed at one end of the two limit rods, and a connecting plate is slidably installed on the outer sleeve of the two limit rods, a number of vibration springs are fixedly installed in parallel between the connecting plate and the vibration seat, an adjusting bolt is threadedly installed at a position passing through the other side of the cross bar, a positioning seat is fixedly installed at one end of the adjusting bolt and passes through the connecting plate, and a number of corrugated grooves are provided in parallel on the upper part of the inclined plate.

[0007] Preferably, two vertical plates are symmetrically fixedly mounted on the upper portion of the inclined plate, the vibration seat is fittedly connected to the vertical plates, an internal thread is provided in the middle portion of the crossbar, and the adjusting bolt is adaptively matched with the internal thread.

[0008] Preferably, the vibration seat is trapezoidal in shape, and a plurality of transverse grooves are arranged in parallel on the lower portion of the vibration seat, and the corrugated grooves are adaptively matched with the transverse grooves.

[0009] Preferably, a cleaning mechanism is provided on the outside of the upper sieve plate and the lower sieve plate, and the cleaning mechanism includes a connecting seat, two sliding rods are slidably installed on both sides of the connecting seat, a front connecting bar is fixedly installed between the two sliding rods, a scraper is fixedly installed at the lower part of the front connecting bar, and a rear connecting bar is fixedly installed on the outside of the sliding rod, a cleaning shaft is rotatably installed between the rear connecting bars on both sides, and a handle is fixedly installed at one end of the two sliding rods, and a mounting seat is fixedly installed at one end of the two sliding rods, a stop seat is installed on the outside of the mounting seat, and a pressure spring is fixedly installed on the inside of the stop seat.

[0010] Preferably, grooves are provided on both sides of the connecting seat, the sliding rod is adaptively matched with the grooves, and a triangular column is fixedly installed on the front end of the blocking seat.

[0011] Preferably, a plurality of cones are fixedly mounted on the outside of the cleaning shaft, and the upper sieve plate and the lower sieve plate are adaptively matched with the cones.

[0012] Preferably, the vibration motor is connected to the outside of the workbench at an angle, and the upper sieve tray and the lower sieve tray are both installed inside the workbench at an angle and symmetrically.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1) The device for coal screening changes the distance between the vibrating seat and the inclined plate by controlling the adjusting bolt, thereby screening coal clumps of different sizes. At the same time, corrugated grooves and transverse grooves are provided. Benefiting from the misalignment space created between the corrugated grooves and the transverse grooves, the coal is fully dispersed. Under the action of the upper and lower sieve plates, the coal is screened, effectively avoiding secondary rework and increasing screening efficiency.

[0015] 2) The device for coal screening moves the upper scraper of the slide rod and the cleaning shaft along the surface of the upper and lower sieve plates by pushing and pulling the handle. Since a number of cones are installed on the outside of the cleaning shaft, the cones push away the mud blocking the inside of the sieve plate, thereby achieving the cleaning effect and avoiding affecting the reuse of the device. In addition, the front ends of the upper and lower sieve plates are provided with blocks to automatically limit the entry and exit of the handle. The device is simple to operate and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a coal screening device in an embodiment of the present utility model;

[0017] Figure 2 This is a schematic cross-sectional view of a coal screening device according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic cross-sectional view of the vibration mechanism in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic cross-sectional view of the cleaning mechanism in an embodiment of the present utility model;

[0020] Figure 5 It is a schematic cross-sectional structural diagram of the cleaning mechanism in an embodiment of the present utility model.

[0021] In the figure: 1. Support foot; 2. Workbench; 3. Buffer spring; 4. Vibration motor; 5. Upper sieve plate; 6. Lower sieve plate; 7. Inclined plate; 8. Vibration mechanism; 801. Support column; 802. Cross bar; 803. Limit rod; 804. Vibration seat; 805. Connecting plate; 806. Vibration spring; 807. Adjusting bolt; 808. Positioning seat; 809. Corrugated groove; 9. Cleaning mechanism; 901. Connecting seat; 902. Sliding rod; 903. Front connecting strip; 904. Scraper; 905. Rear connecting strip; 906. Cleaning shaft; 907. Handle; 908. Mounting seat; 909. Block seat; 910. Pressure spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] Combine Figure 1-Figure 3 A coal screening device includes four supporting legs 1, a workbench 2 is fixedly installed on the upper part of the four supporting legs 1, four buffer springs 3 are fixedly installed between the workbench 2 and the four supporting legs 1, a vibration motor 4 is fixedly installed on the outside of the workbench 2, an upper sieve plate 5 is fixedly installed at one side of the inside of the workbench 2, and a lower sieve plate 6 is fixedly installed at the other side of the inside of the workbench 2, and an inclined plate 7 is fixedly installed on the outside of the workbench 2, and a vibration mechanism 8 is provided on the upper side of the inclined plate 7. The vibration mechanism 8 includes two support columns 801, a cross bar 802 is fixedly installed between the two support columns 801, two limit rods 803 are slidably installed in parallel at a position passing through one side of the cross bar 802, a vibration seat 804 is fixedly installed at one end of the two limit rods 803, and a connecting plate 805 is slidably installed on the outer sleeve of the two limit rods 803, a number of vibration springs 806 are fixedly installed in parallel between the connecting plate 805 and the vibration seat 804, an adjusting bolt 807 is threadedly installed at a position passing through the other side of the cross bar 802, a positioning seat 808 is fixedly installed at one end of the adjusting bolt 807 and passing through the connecting plate 805, and a number of corrugated grooves 809 are arranged in parallel on the upper part of the inclined plate 7.

[0025] See Figure 3 It is further obtained that two vertical plates are symmetrically fixed on the upper part of the inclined plate 7, the vibration seat 804 is fitly connected to the vertical plates, the middle part of the cross bar 802 is provided with an internal thread, the adjusting bolt 807 is adaptively matched with the internal thread, the shape of the vibration seat 804 is trapezoidal, and the lower part of the vibration seat 804 is provided with a plurality of horizontal grooves in parallel, and the corrugated groove 809 is adaptively matched with the horizontal groove.

[0026] Specifically, by adjusting the adjusting bolt 807, the connecting plate 805 is moved up and down, and then the vibration spring 806 and the vibration seat 804 are moved up and down as a whole, changing the distance between the vibration seat 804 and the inclined plate 7. When the coal passes between the inclined plate 7 and the vibration seat 804, it acts on the corrugated groove 809 and the transverse groove to disperse the coal, ensuring that the coal is scattered on the upper screen plate 5, making the screening more thorough.

[0027] Example 2

[0028] Combine Figure 1 、 Figure 4 and Figure 5 , a cleaning mechanism 9 is provided on the outside of the upper sieve plate 5 and the lower sieve plate 6, and the cleaning mechanism 9 includes a connecting seat 901, two slide bars 902 are slidably installed on both sides of the connecting seat 901, a front connecting bar 903 is fixedly installed between the two slide bars 902, a scraper 904 is fixedly installed at the lower part of the front connecting bar 903, and a rear connecting bar 905 is fixedly installed on the outside of the slide bar 902, a cleaning shaft 906 is rotatably installed between the rear connecting bars 905 on both sides, and a handle 907 is fixedly installed on one end of the two slide bars 902, and a mounting seat 908 is fixedly installed on one end of the two slide bars 902, and a stopper 909 is installed on the outside of the mounting seat 908, and a pressure spring 910 is fixedly installed inside the stopper 909.

[0029] See Figure 4 and Figure 5 It is further found that grooves are provided on both sides of the connecting seat 901, the slide rod 902 is adaptively matched with the grooves, a triangular column is fixedly installed on the front end of the blocking seat 909, and several cones are fixedly installed on the outside of the cleaning shaft 906, and the upper sieve plate 5 and the lower sieve plate 6 are adaptively matched with the cones.

[0030] Specifically, by moving the handle 907, the handle 907 is freed from the restriction of the block seat 909, and the scraper 904 and the cleaning shaft 906 are moved along the outer surface of the upper sieve plate 5 and the lower sieve plate 6. Since a number of cones are installed on the outside of the cleaning shaft 906, the mud and ash blocked inside the upper sieve plate 5 and the lower sieve plate 6 can be squeezed out, and the upper sieve plate 5 and the lower sieve plate 6 can be cleaned. When the handle 907 is pushed to make the slide rod 902 embedded in the connecting seat 901, the block seat 909 plays a limiting role under the action of the pressure spring 910.

[0031] Example 3

[0032] See Figure 2 On the basis of Example 1 and Example 2, it is further obtained that the vibration motor 4 is connected obliquely to the outside of the workbench 2, and the upper sieve plate 5 and the lower sieve plate 6 are both obliquely symmetrically installed inside the workbench 2.

[0033] Specifically, in order to make the coal move smoothly on the upper sieve plate 5 and the lower sieve plate 6, the vibration motor 4 is connected obliquely to the outside of the workbench 2, and because the upper sieve plate 5 and the lower sieve plate 6 are both obliquely and symmetrically installed inside the workbench 2, the time that the coal stays on the upper sieve plate 5 and the lower sieve plate 6 is increased, and the coal is finally discharged from different directions, thereby improving production efficiency.

[0034] In actual operation, the connecting plate 805 is moved up and down by adjusting the adjusting bolt 807, thereby causing the vibration spring 806 and the vibration seat 804 to move up and down as a whole, changing the distance between the vibration seat 804 and the inclined plate 7. When the coal passes between the inclined plate 7 and the vibration seat 804, the corrugated grooves 809 and the transverse grooves act to disperse the coal, ensuring that the coal is scattered on the upper screen plate 5, making the screening more thorough.

[0035] By moving the handle 907, the handle 907 is freed from the restriction of the stop seat 909, and the scraper 904 and the cleaning shaft 906 are moved along the outer surface of the upper sieve plate 5 and the lower sieve plate 6. Since a number of cones are installed on the outside of the cleaning shaft 906, the mud and ash blocked inside the upper sieve plate 5 and the lower sieve plate 6 can be squeezed out, thereby cleaning the upper sieve plate 5 and the lower sieve plate 6. When the handle 907 is pushed to make the slide bar 902 embedded in the connecting seat 901, the stop seat 909 plays a limiting role under the action of the pressure spring 910;

[0036] In order to make the coal move smoothly on the upper sieve plate 5 and the lower sieve plate 6, the vibration motor 4 is connected obliquely to the outside of the workbench 2. Since the upper sieve plate 5 and the lower sieve plate 6 are both obliquely and symmetrically installed inside the workbench 2, the time that the coal stays on the upper sieve plate 5 and the lower sieve plate 6 is increased, and the coal is finally discharged from different directions, thereby improving production efficiency.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal screening device, comprising four supporting legs (1), a workbench (2) fixedly mounted on the upper portion of the four supporting legs (1), four buffer springs (3) fixedly mounted between the workbench (2) and the four supporting legs (1), a vibration motor (4) fixedly mounted on the outside of the workbench (2), an upper sieve plate (5) fixedly mounted at one side of the interior of the workbench (2), a lower sieve plate (6) fixedly mounted at the other side of the interior of the workbench (2), and an inclined plate (7) fixedly mounted on the outside of the workbench (2), characterized in that: A vibration mechanism (8) is provided on the upper side of the inclined plate (7). The vibration mechanism (8) includes two support columns (801), a cross bar (802) is fixedly installed between the two support columns (801), two limit rods (803) are slidably installed in parallel at a position passing through one side of the cross bar (802), one end of the two limit rods (803) is fixedly installed with a vibration seat (804), and a connecting plate (805) is slidably installed on the outer sleeve of the two limit rods (803), a plurality of vibration springs (806) are fixedly installed in parallel between the connecting plate (805) and the vibration seat (804), an adjusting bolt (807) is threadedly installed at a position passing through the other side of the cross bar (802), a positioning seat (808) is fixedly installed at one end of the adjusting bolt (807) and passing through the connecting plate (805), and a plurality of corrugated grooves (809) are arranged in parallel on the upper part of the inclined plate (7).

2. A coal screening device according to claim 1, characterized in that: Two vertical plates are symmetrically fixedly mounted on the upper portion of the inclined plate (7), the vibration seat (804) is closely connected to the vertical plates, an internal thread is provided in the middle portion of the crossbar (802), and the adjusting bolt (807) is adaptively matched with the internal thread.

3. A coal screening device according to claim 2, characterized in that: The shape of the vibration seat (804) is trapezoidal, and a plurality of transverse grooves are arranged in parallel at the lower portion of the vibration seat (804), and the corrugated grooves (809) are adaptively matched with the transverse grooves.

4. A coal screening device according to claim 1, characterized in that: A cleaning mechanism (9) is provided on the outside of the upper sieve plate (5) and the lower sieve plate (6), and the cleaning mechanism (9) includes a connecting seat (901), two slide rods (902) are slidably installed on both sides of the connecting seat (901), a front connecting bar (903) is fixedly installed between the two slide rods (902), a scraper (904) is fixedly installed on the lower part of the front connecting bar (903), and a rear connecting bar (905) is fixedly installed on the outside of the slide rod (902), a cleaning shaft (906) is rotatably installed between the rear connecting bars (905) on both sides, and a handle (907) is fixedly installed on one end of the two slide rods (902), and a mounting seat (908) is fixedly installed on one end of each of the two slide rods (902), a stopper (909) is sleeved on the outside of the mounting seat (908), and a pressure spring (910) is fixedly installed inside the stopper (909).

5. A coal screening device according to claim 4, characterized in that: Grooves are provided on both sides of the connecting seat (901), the sliding rod (902) is adaptively matched with the grooves, and a triangular column is fixedly installed at the front end of the blocking seat (909).

6. A coal screening device according to claim 5, characterized in that: A plurality of cones are fixedly mounted on the outside of the cleaning shaft (906), and the upper sieve plate (5) and the lower sieve plate (6) are adaptively matched with the cones.

7. A coal screening device according to claim 6, characterized in that: The vibration motor (4) is connected to the outside of the workbench (2) in an oblique manner, and the upper sieve plate (5) and the lower sieve plate (6) are both installed in an oblique and symmetrical manner inside the workbench (2).

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