Screening device based on coal mining

Abstract

The screening device based on coal mining is characterized in that two rotating rollers are symmetrically and rotationally connected to the two sides of the interior of a dispersing box, dispersing rods are evenly distributed at the edge ends of the two rotating rollers, and material blocking inclined plates are correspondingly installed at the edge end of the top of the inner side of the dispersing box in the inclined direction; according to the coal mine screening device, two sets of rotating rollers and scattering rods which rotate relatively are arranged on the two sides of the interior of the scattering box, so that coal mines entering the screening box can be effectively scattered conveniently, and the phenomenon that the coal mines are stacked and agglomerated in the subsequent screening process is avoided; according to the coal mine scattering device, follow-up screening of a coal mine in a scattered state is guaranteed, the follow-up screening effect of the coal mine is improved, meanwhile, the coal mine can enter the scattering box more rapidly and evenly in a scattered mode through a material blocking inclined plate and scattering strips evenly arranged on the top face of the material blocking inclined plate, and therefore scattering treatment can be conducted on the coal mine more sufficiently and effectively through scattering rods.

Description

Technical Field

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

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, people generally choose to dig tunnels underground to mine coal. This is an underground coal mine. When the coal seam is very close to the surface, people generally choose to directly strip the surface soil layer to mine coal. This is an open-pit coal mine. Currently, most coal mines are underground coal mines. The coal initially mined is not convenient for production and processing due to its large volume. Therefore, the coal needs to be crushed and screened during the mining process to reduce the volume of the coal for easy transportation and subsequent use.

[0003] However, in the actual screening process of current coal screening equipment, the traditional fixed screen structure cannot effectively screen the coal, which reduces the screening effect. In addition, in the process of coal screening, due to the accumulation and agglomeration of coal, there is a lack of means to disperse it, resulting in the screen being unable to effectively screen the coal. Utility Model Content

[0004] The utility model provides a screening device based on coal mining, which can effectively solve the problem proposed in the above background technology that in the actual screening process of the current coal screening equipment, the traditional fixed screen structure cannot effectively screen the coal, which reduces the screening effect, and in the process of coal screening, due to the accumulation and agglomeration of coal and the lack of means for dispersing it, the screen cannot effectively screen the coal during screening.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screening device based on coal mining, comprising a screening box, the top of the screening box is embedded with a dispersing box in a fitting and snap-fit ​​connection, and the top of the dispersing box is connected with a hopper, both sides of the inner side of the screening box are provided with limiting grooves, the inner side of the limiting groove is embedded with a screening frame in a fitting and sliding connection, the inner side of the screening frame is embedded with a screen, and the bottom of both sides of the screening frame is fixedly connected with a return spring, the inner side of the screening box corresponds to the inner position of one of the limiting grooves and is rotatably connected with a cam, and the outer side of the screening box corresponds to the cam and a first drive motor is fixedly installed;

[0006] Two rollers are symmetrically rotatably connected on both sides of the dispersion box, and breaking rods are evenly distributed on the edges of the two rollers. The two rollers are transmission connected through the gear transmission connection on the edge of the dispersion box. A material blocking inclined plate is correspondingly installed along the inclined direction of the inner top edge of the dispersion box, and dispersion strips are evenly arranged on the surface of the material blocking inclined plate.

[0007] Preferably, the bottom end of the return spring is fixedly connected to the bottom of the limiting groove, and the cam drives the screening frame to repeatedly rise and fall inside the limiting groove.

[0008] Preferably, the gear transmission connection comprises a gear box and a second drive motor;

[0009] A gear box is fixedly installed on one side of the dispersion box, and a second drive motor is connected to one side of the gear box. The second drive motor is fixedly installed on the edge of the dispersion box, and the input ends of the first drive motor and the second drive motor are electrically connected to the output end of an external power supply.

[0010] Preferably, two mutually meshing transmission gears are rotatably connected to the two rollers inside the gear box, and the two transmission gears are respectively connected to the two rollers through a rotating shaft, and one of the transmission gears is connected to the output shaft of the second drive motor through a driving shaft.

[0011] Preferably, the bottom of the screening box is connected to a bottom bracket, the inner side of the bottom bracket is embedded with a collecting box for sliding connection, and the bottom of the bottom bracket is equidistantly connected to a plurality of carrier plates, and the top of the carrier plate located in the middle of the bottom bracket is equidistantly connected to three supporting springs;

[0012] An extrusion switch is fixedly installed at the inner side of a support spring corresponding to the top middle end of the carrier plate, a pressure plate is connected to the top of the support spring, and an extrusion seat is connected to the bottom middle end of the pressure plate corresponding to the extrusion switch, and a warning light is installed on the front edge of the screening box.

[0013] Preferably, the bottom of the collection box is placed on the top of the pressure plate, and the input end of the warning light is electrically connected to the output end of the squeeze switch.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a scientific and reasonable structure and is safe and convenient to use:

[0015] 1. Two sets of relatively rotating rollers and breaking rods are arranged on both sides of the dispersion box, so as to facilitate the effective breaking of the coal entering the screening box, avoid the accumulation and agglomeration of coal in the subsequent screening process, ensure that the coal is screened in a dispersed state, and improve the subsequent screening effect of the coal. At the same time, the material blocking inclined plate and the evenly arranged dispersion strips on the top surface are used to make the coal enter the dispersion box more quickly and evenly, so that the breaking rod can break the coal more fully and effectively.

[0016] 2. The intermittent drive structure composed of a reset spring, a cam and a first drive motor is convenient for driving the screening frame and the screen to perform reciprocating lifting and lowering activities in the limit groove, and the screening frame and the screen are further used to drive the coal to vibrate, thereby ensuring that the coal is evenly distributed on the surface of the screening frame and the screen, so that the screen can more effectively screen the coal during screening, thereby ensuring the screening effect of the coal.

[0017] 3. The collection box is conveniently supported by the carrier plate and the support spring. When the coal in the collection box collects a predetermined load weight, the pressure plate will squeeze the support spring. After the support spring is compressed, the squeezing seat presses the squeezing switch to start the warning light, which is convenient for reminding the staff to discharge the material, thereby improving the convenience of the discharge process after coal screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0019] In the attached picture:

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation structure of the utility model roller;

[0022] Figure 3 It is a schematic diagram of the installation structure of the screening frame of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the support spring of the utility model;

[0024] Numbers in the figure: 1. screening box; 2. dispersion box; 3. hopper; 4. limit slot; 5. screening frame; 6. reset spring; 7. screen; 8. cam; 9. first drive motor; 10. gear box; 11. roller; 12. breaking rod; 13. second drive motor; 14. material blocking inclined plate; 15. dispersion bar; 16. bottom bracket; 17. collection box; 18. carrier plate; 19. support spring; 20. extrusion switch; 21. pressure plate; 22. extrusion seat; 23. warning light. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] Example: Figure 1-4As shown, the utility model provides a technical solution, a screening device based on coal mining, including a screening box 1, the top of the screening box 1 is embedded with a dispersing box 2 for convenient connection and disassembly between the dispersing box 2 and the screening box 1, and the top of the dispersing box 2 is connected with a hopper 3, both sides of the inner side of the screening box 1 are provided with limiting grooves 4, the inner side of the limiting groove 4 is embedded with a screening frame 5 for sliding connection, the inner side of the screening frame 5 is embedded with a screen 7, and the bottom of both sides of the screening frame 5 is fixedly connected with a return spring 6, the inner side of the screening box 1 corresponds to the inner position of one of the limiting grooves 4 and is rotatably connected with a cam 8, the bottom end of the return spring 6 is fixedly connected with the bottom of the limiting groove 4, the cam 8 drives the screening frame 5 to repeatedly rise and fall on the inner side of the limiting groove 4, which is convenient for the lifting and lowering of the screening frame 5, and is convenient for the screen 7 to better screen the coal mine, and the outer side of the screening box 1 is fixedly installed with a first driving motor 9 corresponding to the cam 8;

[0027] Two rollers 11 are symmetrically connected to the inner sides of the dispersion box 2, and the edges of the two rollers 11 are evenly distributed with breaking rods 12. The two rollers 11 are connected to each other through the gear transmission connection at the edge of the dispersion box 2. The gear transmission connection includes a gear box 10 and a second drive motor 13.

[0028] A gear box 10 is fixedly installed on one side edge of the dispersion box 2, and a second drive motor 13 is connected to one side edge of the gear box 10. Two mutually meshing transmission gears are rotatably connected to the two rollers 11 inside the gear box 10. The two transmission gears are respectively connected to the two rollers 11 through rotating shafts, and one of the transmission gears is connected to the output shaft of the second drive motor 13 through a driving shaft, so that the two rollers 11 can be driven to rotate synchronously by the second drive motor 13. The second drive motor 13 is fixedly installed on the edge of the dispersion box 2, and the input ends of the first drive motor 9 and the second drive motor 13 are electrically connected to the output end of the external power supply. A material blocking inclined plate 14 is correspondingly installed along the inclined direction of the inner top edge of the dispersion box 2, and dispersion strips 15 are evenly arranged on the surface of the material blocking inclined plate 14.

[0029] The bottom of the screening box 1 is connected with a bottom bracket 16, the inner side of the bottom bracket 16 is embedded with a collecting box 17 for sliding connection, and the bottom of the bottom bracket 16 is equidistantly connected with a plurality of carrier plates 18, and the top of the carrier plate 18 located in the middle of the bottom bracket 16 is equidistantly connected with three supporting springs 19;

[0030] A squeezing switch 20 is fixedly installed at the inner position of a supporting spring 19 corresponding to the top middle end of the carrier plate 18, a pressing plate 21 is connected to the top of the supporting spring 19, and a squeezing seat 22 is connected to the bottom middle end of the pressing plate 21 corresponding to the squeezing switch 20, a warning light 23 is installed on the front edge of the screening box 1, and the bottom of the collecting box 17 is placed on the top of the pressing plate 21, and the input end of the warning light 23 is electrically connected to the output end of the squeezing switch 20, so that when the pressing plate 21 presses the squeezing switch 20 through the squeezing seat 22, the warning light 23 is activated by squeezing the switch 20.

[0031] Working principle and use process of the utility model: In the actual application process of the screening device based on coal mining, the first drive motor 9 and the second drive motor 13 are first started, and then the coal to be screened is introduced into the hopper 3;

[0032] At this time, the material blocking inclined plate 14 and the dispersing strips 15 evenly arranged on its top surface are used to enable the coal to enter the dispersing box 2 more quickly and evenly, so that the coal can be dispersed more fully and effectively when the rollers 11 and the dispersing rods 12 rotate. When the coal enters the dispersing box 2, the second driving motor 13 is used to drive the two sets of relatively rotating rollers 11 and the dispersing rods 12 inside the dispersing box 2 to rotate, so that the rotation of the rollers 11 and the dispersing rods 12 can realize the effective dispersing of the coal entering the screening box 1, avoid the coal from piling up and agglomerating in the subsequent screening process, and ensure that the coal is screened in a dispersed state in the subsequent screening.

[0033] After the coal is dispersed, the dispersed coal enters the screening box 1, and the first drive motor 9 is used to drive the cam 8 to rotate, so that under the action of the limit groove 4 and the return spring 6, the intermittent drive structure composed of the cam 8 and the first drive motor 9 drives the screening frame 5 and the screen 7 to perform reciprocating lifting activities in the limit groove 4, so that the reciprocating lifting activities of the screening frame 5 and the screen 7 are used to drive the coal to vibrate, so that the screen 7 can more effectively screen the coal during screening;

[0034] After the coal screening is completed, the qualified coal will directly enter the collection box 17. After the coal enters the collection box 17, the collection box 17 is supported by the carrier plate 18 and the support spring 19. After the coal in the collection box 17 collects a predetermined loading weight, the collection box 17 will squeeze the pressure plate 21, and the pressure plate 21 will squeeze the support spring 19. After the support spring 19 is compressed, the squeezing seat 22 moves close to the squeezing switch 20, and the squeezing switch 20 is pressed by the squeezing seat 22, thereby starting the warning light 23 to remind the staff to discharge the material in time.

[0035] In addition, by disassembling and separating the dispersion box 2 and the screening box 1, it is convenient to subsequently clean up the coal mines whose surfaces of the screen 7 do not meet the screening specifications.

[0036] Finally, it should be noted that the above description is only a preferred example of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A screening device based on coal mining, comprising a screening box (1), characterized in that: The top of the screening box (1) is embedded in a fitting and snap-fit ​​connection with a dispersion box (2), and the top of the dispersion box (2) is connected to a hopper (3). The two side ends of the inside of the screening box (1) are provided with limit slots (4), the inner side of the limit slots (4) is embedded in a fitting and slidably connected with a screening frame (5), the inner side of the screening frame (5) is embedded with a screen (7), and the bottom of both sides of the screening frame (5) are fixedly connected with return springs (6), the inner side of the screening box (1) corresponds to the inner position of one of the limit slots (4) and is rotatably connected with a cam (8), and the outer side of the screening box (1) corresponds to the cam (8) and is fixedly installed with a first drive motor (9); Two rollers (11) are symmetrically rotatably connected on both sides of the dispersion box (2), and the edges of the two rollers (11) are evenly distributed with breaking rods (12). The two rollers (11) are transmission-connected via a gear transmission connection at the edge of the dispersion box (2). A material blocking inclined plate (14) is correspondingly installed at the inner top edge of the dispersion box (2) along an inclined direction, and dispersion strips (15) are evenly arranged on the surface of the material blocking inclined plate (14).

2. A screening device based on coal mining according to claim 1, characterized in that: The bottom end of the return spring (6) is fixedly connected to the bottom of the limiting groove (4), and the cam (8) drives the screening frame (5) to repeatedly rise and fall inside the limiting groove (4).

3. A screening device based on coal mining according to claim 1, characterized in that: The gear transmission connection comprises a gear box (10) and a second drive motor (13); A gear box (10) is fixedly mounted on one side edge of the dispersion box (2), a second drive motor (13) is connected to one side edge of the gear box (10), the second drive motor (13) is fixedly mounted on the edge of the dispersion box (2), and the input ends of the first drive motor (9) and the second drive motor (13) are both electrically connected to the output end of an external power supply.

4. A screening device based on coal mining according to claim 3, characterized in that: Two mutually meshing transmission gears are rotatably connected to the two rollers (11) inside the gear box (10); the two transmission gears are respectively connected to the two rollers (11) via a rotating shaft, and one of the transmission gears is connected to the output shaft of the second drive motor (13) via a driving shaft.

5. A screening device based on coal mining according to claim 1, characterized in that: The bottom of the screening box (1) is connected to a bottom bracket (16), the inner side of the bottom bracket (16) is embedded with a collecting box (17) for sliding connection, and the bottom of the bottom bracket (16) is equidistantly connected to a plurality of carrier plates (18), and the top of the carrier plate (18) located in the middle of the bottom bracket (16) is equidistantly connected to three supporting springs (19); A squeeze switch (20) is fixedly installed at a position inside a support spring (19) corresponding to the top middle end of the carrier plate (18), a pressing plate (21) is connected to the top end of the support spring (19), and a squeezing seat (22) is connected to the bottom middle end of the pressing plate (21) corresponding to the squeezing switch (20), and a warning light (23) is installed on the front edge of the screening box (1).

6. A screening device based on coal mining according to claim 5, characterized in that: The bottom of the collection box (17) is placed on the top of the pressure plate (21), and the input end of the warning light (23) is electrically connected to the output end of the squeeze switch (20).

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