Screening device

Abstract

The utility model relates to the technical field of screening devices, in particular to a screening device which facilitates dust removal, improves working efficiency and enhances practicability. Comprising a screening box, a plurality of supporting legs are evenly and fixedly installed at the bottom end of the screening box, a working cavity is formed in the screening box, and a feeding hole is formed in the top end of the working cavity. A screening mechanism comprises a motor, a first supporting plate is fixedly installed in the working cavity, a screening hopper is rotatably installed on the first supporting plate, and rotating teeth are arranged on the screening hopper in a surrounding mode. The motor is fixedly installed at one end of the screening box, the output end of the motor is fixedly provided with a gear, one end of the working cavity is provided with a first through hole, the gear is meshed with the rotating teeth, one end of the working cavity communicates with a discharging pipe, the input end of the discharging pipe is rotationally connected with the output end of the screening hopper, and one end of the working cavity is provided with a discharging hole. A water tank is arranged on the second supporting plate, a suction fan is arranged on the water tank, and the input end of the suction fan is communicated with the water tank.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a screening device. 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. When coal is transported, it is necessary to screen the coal mines, and screen them according to standards with similar sizes to facilitate transportation.

[0003] For example, the utility model patent with Chinese patent publication number CN213287582U discloses a coal screening and transportation device for coal mines, which relates to the field of coal mine technology and includes a bottom plate, a buffer spring, a buffer plate, a vibrator, a first support leg, a screening box and a transportation assembly. The four corners of the upper surface of the bottom plate are welded with buffer springs, the upper surface of the buffer spring is welded with a buffer plate, and the center of the upper surface of the buffer plate is fixed with a vibrator by bolts;

[0004] It was found during use of the above-mentioned prior art that the device drives the screening box to vibrate through a vibrator, and the coal is screened through an inclined mesh through the vibration of the box, so that larger coal and smaller coal are transported separately. However, the device also generates dust during screening, which is easy to pollute the surrounding environment. It will also affect the health of coal miners for a long time and reduce work efficiency, resulting in poor practicality. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In order to solve the above technical problems, the utility model provides a screening device which is convenient for dust removal, improves work efficiency and enhances practicality.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a screening device, including a screening box, a plurality of legs are evenly fixedly installed at the bottom of the screening box, a working chamber is arranged in the screening box, a feeding hole is opened at the top of the working chamber, the screening mechanism includes a motor, a first support plate is fixedly installed in the working chamber, a screening bucket is rotatably installed on the first support plate, a rotating gear is arranged around the screening bucket, the motor is fixedly installed at one end of the screening box, a gear is fixedly installed at the output end of the motor, a first through hole is opened at one end of the working chamber, the gear is meshed with the rotating gear, and a discharge pipe is installed at one end of the working chamber. The input end of the discharge pipe is rotatably connected with the output end of the screening bucket, a discharge hole is opened at one end of the working chamber, a second support plate is fixedly installed at one end of the screening box, a water tank is arranged on the second support plate, a suction fan is arranged on the water tank, the input end of the suction fan is connected to the water tank, a drain pipe is connected and installed at one end of the water tank, a switch is arranged on the drain pipe, a water inlet hole is opened on the water tank, a box cover is sealed and installed on the water inlet hole, dust removal liquid is arranged in the water tank, an annular pipe is arranged in the working chamber, a plurality of dust suction holes are opened on the annular pipe, an air supply pipe is connected and installed on the annular pipe, and the output end of the air supply pipe extends into the dust removal liquid.

[0009] By adopting the above technical scheme, the motor is started, and the motor drives the screening bucket to rotate through the meshing of the gear and the rotating teeth, and the coal is added into the screening box through the feed hole, and the coal falls into the screening bucket, and the rotating screening bucket screens it. The smaller coal passes through the screening bucket and falls to the bottom of the screening box and is discharged through the discharge hole, and the larger coal remains in the screening bucket and is finally discharged through the discharge pipe. The suction fan is started, and the suction fan generates negative pressure in the water tank. The negative pressure generates suction in the annular tube through the air supply pipe, and the dust generated by the screening of the screening bucket is absorbed and sent into the dust removal liquid in the water tank through the air supply pipe. After being absorbed and filtered by the dust removal liquid, it is discharged through the suction fan to avoid direct discharge to pollute the environment. The old dust removal liquid can be discharged through the drain pipe, and new dust removal liquid can be added through the water inlet. This process realizes the process of facilitating dust removal, improves work efficiency, and thus enhances practicality.

[0010] Preferably, a feed hopper is connected to the top of the feed hole.

[0011] By adopting the above technical solution, the coal can be better added into the screening box through the feed hopper, thereby enhancing practicality.

[0012] Preferably, support rods are fixedly installed at both ends of the discharge pipe, and the two support rods are fixedly connected to the two ends of the working chamber respectively.

[0013] By adopting the above technical solution, the support rod can reinforce the discharge pipe, thereby enhancing stability.

[0014] Preferably, the plurality of legs are connected via a connecting rod.

[0015] By adopting the above technical solution, the connecting rod can improve the stability between the multiple legs.

[0016] Preferably, casters are fixedly mounted on the bottom ends of the plurality of legs.

[0017] By adopting the above technical solution, the device can be moved to a required place, thereby reducing usage limitations.

[0018] Preferably, a material baffle is fixedly installed in the working chamber.

[0019] By adopting the above technical solution, the baffle plate can prevent coal from falling onto the rotating teeth, thereby improving safety.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present application provides a screening device with the following beneficial effects:

[0022] Start the motor, which drives the screening bucket to rotate through the meshing of the gear and the rotating teeth, and add the coal into the screening box through the feed hole. The coal falls into the screening bucket and is screened by the rotating screening bucket. The smaller coal passes through the screening bucket and falls to the bottom of the screening box and is discharged through the discharge hole. The larger coal remains in the screening bucket and is finally discharged through the discharge pipe. Start the suction fan, which creates negative pressure in the water tank. The negative pressure creates suction in the annular tube through the air supply pipe, which absorbs the dust generated by the screening in the screening bucket and sends it into the dust removal liquid in the water tank through the air supply pipe. After being absorbed and filtered by the dust removal liquid, it is discharged through the suction fan to avoid direct discharge and pollution of the environment. The old dust removal liquid can be discharged through the drain pipe, and new dust removal liquid can be added through the water inlet. This process facilitates the dust removal process, improves work efficiency, and thus enhances practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the shaft side structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the axial side cross-sectional structure of the utility model;

[0025] Figure 3 It is a schematic diagram of the main cross-sectional structure of the utility model;

[0026] Figure 4 It is a partial cross-sectional structural schematic diagram of the utility model.

[0027] Markings in the attached drawing: 1. screening box; 2. support legs; 3. motor; 4. first support plate; 5. screening bucket; 6. rotating teeth; 7. gear; 8. discharge pipe; 9. second support plate; 10. water tank; 11. suction fan; 12. drain pipe; 13. box cover; 14. annular pipe; 15. air supply pipe; 16. feed hopper; 17. support rod; 18. connecting rod; 19. caster; 20. material baffle plate. DETAILED DESCRIPTION

[0028] Example

[0029] See also Figure 1-Figure 4 A screening device comprises a screening box 1, a plurality of legs 2 are evenly and fixedly installed at the bottom of the screening box 1, a working chamber is arranged in the screening box 1, a feeding hole is opened at the top of the working chamber, a feeding hopper 16 is connected to the top of the feeding hole, and the coal can be better added into the screening box 1 through the feeding hopper 16, the screening mechanism comprises a motor 3, a first support plate 4 is fixedly installed in the working chamber, a screening bucket 5 is rotatably installed on the first support plate 4, a rotating gear 6 is arranged around the screening bucket 5, the motor 3 is fixedly installed at one end of the screening box 1, a gear 7 is fixedly installed at the output end of the motor 3, and a first support plate 4 is fixedly installed in the working chamber. A first through hole is opened at the end, the gear 7 is meshed with the rotating gear 6, a discharge pipe 8 is connected and installed at one end of the working chamber, the input end of the discharge pipe 8 is rotatably connected to the output end of the screening bucket 5, a discharge hole is opened at one end of the working chamber, a second support plate 9 is fixedly installed at one end of the screening box 1, a water tank 10 is arranged on the second support plate 9, a suction fan 11 is arranged on the water tank 10, the input end of the suction fan 11 is connected and connected with the water tank 10, a drain pipe 12 is connected and installed at one end of the water tank 10, a switch is arranged on the drain pipe 12, a water inlet hole is opened on the water tank 10, a box cover 13 is sealed and installed on the water inlet hole, and the water tank 1 0 is provided with dust removal liquid, an annular tube 14 is provided in the working chamber, a plurality of dust suction holes are opened on the annular tube 14, an air supply pipe 15 is connected and installed on the annular tube 14, the output end of the air supply pipe 15 extends into the dust removal liquid, the motor 3 is started, the motor 3 drives the screening bucket 5 to rotate through the meshing of the gear 7 and the rotating tooth 6, the coal is added into the screening box 1 through the feed hole, the coal falls into the screening bucket 5, the rotating screening bucket 5 screens it, the smaller coal passes through the screening bucket 5 and falls to the bottom of the screening box 1, and is discharged through the discharge hole, and the larger coal remains in the screening bucket 5 , and finally discharged through the discharge pipe 8, and the suction fan 11 is started. The suction fan 11 generates negative pressure in the water tank 10. The negative pressure causes the annular tube 14 to generate suction through the air supply pipe 15, and the dust generated by the screening bucket 5 is absorbed and sent into the dust removal liquid in the water tank 10 through the air supply pipe 15. After being absorbed and filtered by the dust removal liquid, it is discharged through the suction fan 11 to avoid direct discharge and pollution of the environment. The old dust removal liquid can be discharged through the drain pipe 12, and new dust removal liquid can be added through the water inlet hole. This process realizes the process of facilitating dust removal, improves work efficiency, and thus enhances practicality.

[0030] See also Figure 1-Figure 4 Support rods 17 are fixedly installed at both ends of the discharge pipe 8. The two support rods 17 are fixedly connected to the two ends of the working chamber respectively. The support rods 17 can reinforce the discharge pipe 8, thereby enhancing stability.

[0031] See also Figure 1-Figure 3 The multiple legs 2 are connected by a connecting rod 18, which can improve the stability between the multiple legs 2. Casters 19 are fixedly installed at the bottom ends of the multiple legs 2, so that the device can be moved to a required place.

[0032] See also Figure 1-Figure 4 A baffle plate 20 is fixedly installed in the working chamber, and the baffle plate 20 can prevent coal from falling onto the rotating teeth 6, thereby improving safety.

[0033] The utility model is a screening device, which starts the motor 3 when working. The motor 3 is a well-known device purchased directly from the market by technicians in this field. Here we just use it, and do not make any improvements to its structure and function. We will not go into details here. The motor 3 is provided with a control switch matched with it. The installation position of the control switch is selected according to the actual use requirements, which is convenient for operators to operate and control. The motor 3 drives the screening bucket 5 to rotate through the meshing of the gear 7 and the rotating tooth 6, and the coal is added into the screening box 1 through the feed hole. The coal falls into the screening bucket 5, and the rotating screening bucket 5 screens it. The volume The smaller coal passes through the screening bucket 5 and falls to the bottom of the screening box 1 and is discharged through the discharge hole. The larger coal remains in the screening bucket 5 and is finally discharged through the discharge pipe 8. The suction fan 11 is started, and the suction fan 11 generates negative pressure in the water tank 10. The negative pressure causes the annular tube 14 to generate suction through the air supply pipe 15, and the dust generated by the screening of the screening bucket 5 is absorbed and sent into the dust removal liquid in the water tank 10 through the air supply pipe 15. After being absorbed and filtered by the dust removal liquid, it is discharged through the suction fan 11 to avoid direct discharge and pollution of the environment. The old dust removal liquid can be discharged through the drain pipe 12, and new dust removal liquid can be added through the water inlet hole. This process realizes a process that facilitates dust removal.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screening device, comprising a screening box (1), a plurality of legs (2) being evenly fixedly mounted on the bottom of the screening box (1), a working chamber being arranged in the screening box (1), a feeding hole being arranged at the top of the working chamber, characterized in that , also includes: The screening mechanism comprises a motor (3), a first support plate (4) fixedly installed in a working chamber, a screening bucket (5) rotatably installed on the first support plate (4), a rotating gear (6) surrounding the screening bucket (5), the motor (3) fixedly installed at one end of the screening box (1), a gear (7) fixedly installed at the output end of the motor (3), a first through hole opened at one end of the working chamber, the gear (7) meshing with the rotating gear (6), a discharge pipe (8) connected to one end of the working chamber, the input end of the discharge pipe (8) being rotatably connected to the output end of the screening bucket (5), a discharge hole opened at one end of the working chamber, and a second support plate fixedly installed at one end of the screening box (1) (9), a water tank (10) is arranged on the second support plate (9), a suction fan (11) is arranged on the water tank (10), an input end of the suction fan (11) is connected to the water tank (10), a drain pipe (12) is connected to one end of the water tank (10), a switch is arranged on the drain pipe (12), a water inlet hole is opened on the water tank (10), a box cover (13) is sealed on the water inlet hole, dust removal liquid is arranged in the water tank (10), an annular tube (14) is arranged in the working chamber, a plurality of dust suction holes are opened on the annular tube (14), an air supply pipe (15) is connected to the annular tube (14), and an output end of the air supply pipe (15) extends into the dust removal liquid.

2. A screening device according to claim 1, characterized in that: The top end of the feed hole is connected to a feed hopper (16).

3. A screening device according to claim 2, characterized in that: Support rods (17) are fixedly mounted at both ends of the discharge pipe (8), and the two support rods (17) are fixedly connected to the two ends of the working chamber respectively.

4. A screening device according to claim 3, characterized in that: The plurality of legs (2) are connected via a connecting rod (18).

5. A screening device as claimed in claim 4, characterized in that: Casters (19) are fixedly mounted on the bottom ends of the plurality of legs (2).

6. A screening device according to claim 5, characterized in that: A material blocking plate (20) is fixedly installed in the working chamber.

Images