Screening device capable of preventing dust from splashing and used for coal mining

Abstract

The utility model discloses a coal mining screening device capable of preventing dust from splashing, which belongs to the technical field of coal mining and comprises a screening square box, a dust removal box is fixedly connected to the back of the screening square box, a sealing door is arranged on the outer surface of the dust removal box, and a negative pressure exhaust fan is fixedly mounted on the back of the dust removal box. The inner wall of the dust removal box is fixedly connected with a filter screen, the upper surface of the dust removal box fixedly communicates with a conveying guide pipe, and a dust suction square cover is fixedly embedded in the upper surface of the screening square box. Dust generated during screening in the screening square box is extracted through a dust suction square cover and a conveying guide pipe, under the filtering effect of a filter screen, the dust can be collected into a dust removal box, the situation that the dust splashes everywhere during material screening is prevented, the situation that the dust is diffused is effectively avoided, the health of workers is guaranteed, and the working efficiency is improved. And the safety of the production environment is protected.

Description

Technical Field

[0001] The utility model relates to the field of coal mining, in particular to a screening device for coal mining with dust splash prevention. Background Technique

[0002] Coal mining is an area where coal resources are mined in coal-rich mining areas. Generally, it is divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, generally, underground roadways are dug to extract coal, which is an underground coal mine. When the distance between the coal seam and the surface is very close, generally, the surface soil layer is directly stripped to excavate coal, which is an open-pit coal mine. After coal mining, a screening device is needed to screen it.

[0003] At present, in the screening operation, due to the high-frequency vibration of the screening equipment driving the materials on the screen, the dust entrained in the materials is mixed with the air to form dust, resulting in large dust emissions during the screening process, affecting the environment, being unfavorable for dust treatment, and seriously harming the health of personnel. Therefore, technicians in this field have provided a screening device for coal mining with dust splash prevention to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The purpose of the utility model is to provide a screening device for coal mining with dust splash prevention to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A screening device for coal mining with dust splash prevention includes a screening square box. A dust removal box is fixedly connected to the back of the screening square box. A sealing door is arranged on the outer surface of the dust removal box. A negative pressure exhaust fan is fixedly installed on the back of the dust removal box. A filter screen is fixedly connected to the inner wall of the dust removal box. A conveying duct is fixedly communicated with the upper surface of the dust removal box. A dust suction square cover is fixedly inlaid on the upper surface of the screening square box. One end of the conveying duct far away from the dust removal box is communicated with the dust suction square cover. A fixed frame is fixedly installed on the right side of the screening square box. A rotating motor is fixedly installed inside the fixed frame. The output end of the rotating motor penetrates through the screening square box and is fixedly connected with a U-shaped connecting frame. A cylindrical screen is fixedly installed on the outer surface of the U-shaped connecting frame. A feeding hopper is fixedly communicated with the outer surface of the cylindrical screen.

[0007] As a further scheme of the utility model: a long strip opening is arranged on the upper surface of the cylindrical screen.

[0008] As a further scheme of the utility model: a blanking cylinder is fixedly inlaid on the bottom surface of the screening square box. A plurality of square columns are fixedly connected to the bottom surface of the screening square box.

[0009] As a further solution of the utility model: a through opening is formed in the left side surface of the screening square box, and the size of the through opening is matched with that of the feeding hopper.

[0010] As a further solution of the utility model: two support columns are fixedly connected to the inner bottom wall of the screening square box, an arc-shaped slide rail is fixedly installed on the upper surfaces of the two support columns, a sliding block is slidably connected inside the arc-shaped slide rail, and the outer surface of the sliding block is fixedly connected to the bottom surface of the cylindrical sieve.

[0011] As a further solution of the utility model: two inclined supports are fixedly connected to the upper surface of the dust removal box, a circular sleeve is fixedly connected to the outer surface of the conveying conduit, and the outer surface of the circular sleeve is fixedly connected to the outer surfaces of the two inclined supports.

[0012] As a further solution of the utility model: the feeding hopper is inclined, and the feeding hopper is installed on the left side of the cylindrical sieve.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] For the screening device for coal mining with dust splash prevention, through the combined use of the rotating motor, U-shaped connecting frame and cylindrical sieve, and by using the feeding hopper to add the material to be screened into the cylindrical sieve, the rotating motor can be used to drive the U-shaped connecting frame and the cylindrical sieve to rotate reciprocally, so that the cylindrical sieve can screen the material, achieving the purpose of screening the material and realizing the purpose of simpler operation during screening. Through the combined use of the negative pressure exhaust fan, filter screen, conveying conduit and dust suction hood, the negative pressure exhaust fan can be used to generate negative pressure in the dust removal box, and the dust generated during screening in the screening square box can be extracted through the dust suction hood and the conveying conduit. Under the filtering action of the filter screen, the dust can be collected into the dust removal box, preventing the dust from splashing everywhere during the screening of the material, effectively avoiding the situation of dust diffusion, ensuring the health of the staff, protecting the safety of the production environment, and facilitating the collection and treatment of the dust. Description of the Drawings

[0015] Figure 1 It is a front three-dimensional schematic diagram of a screening device for coal mining with dust splash prevention;

[0016] Figure 2 It is a rear view schematic diagram of a screening device for coal mining with dust splash prevention;

[0017] Figure 3 It is a front sectional structure schematic diagram of a screening device for coal mining with dust splash prevention;

[0018] Figure 4It is a schematic side-sectional structure diagram of a screening device for coal mining with dust splash prevention;

[0019] Figure 5 It is a schematic side-sectional structure diagram of a dust removal box in a screening device for coal mining with dust splash prevention.

[0020] In the figure: 1. Screening square box; 2. Feeding cylinder; 3. Feeding hopper; 4. Through port; 5. Dust removal box; 6. Sealing door; 7. Negative pressure exhaust fan; 8. Filter screen; 9. Conveying duct; 10. Dust suction square cover; 11. Fixed frame; 12. Rotating motor; 13. U-shaped connecting frame; 14. Cylindrical screen; 15. Support column; 16. Arc-shaped slide rail; 17. Sliding block; 18. Circular sleeve ring; 19. Inclined support; 20. Square column; 21. Long strip opening. Specific embodiments

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0023] Please refer to Figures 1 to 5, in the embodiment of the present utility model, a screening device for coal mining with dust splash prevention includes a screening square box 1. A dust removal box 5 is fixedly connected to the back surface of the screening square box 1. A sealing door 6 is arranged on the outer surface of the dust removal box 5. A negative pressure exhaust fan 7 is fixedly installed on the back surface of the dust removal box 5. A filter screen 8 is fixedly connected to the inner wall of the dust removal box 5. A conveying conduit 9 is fixedly communicated with the upper surface of the dust removal box 5. A dust suction square cover 10 is fixedly inlaid on the upper surface of the screening square box 1. One end of the conveying conduit 9 away from the dust removal box 5 is communicated with the dust suction square cover 10. A fixed frame 11 is fixedly installed on the right side surface of the screening square box 1. A rotating motor 12 is fixedly installed inside the fixed frame 11. The output end of the rotating motor 12 penetrates through the screening square box 1 and is fixedly connected with a U-shaped connecting frame 13. A cylindrical screen 14 is fixedly installed on the outer surface of the U-shaped connecting frame 13. A feeding hopper 3 is fixedly communicated with the outer surface of the cylindrical screen 14. The feeding hopper 3 can be used to add materials to be screened into the cylindrical screen 14. The rotating motor 12 can be operated to drive the U-shaped connecting frame 13 and the cylindrical screen 14 to rotate reciprocally. Thus, the cylindrical screen 14 can be used to screen the materials, achieving the purpose of screening the materials. The negative pressure exhaust fan 7 is operated to generate negative pressure inside the dust removal box 5, and the dust generated during screening in the screening square box 1 is extracted through the dust suction square cover 10 and the conveying conduit 9. Under the filtering action of the filter screen 8, the dust can be collected into the dust removal box 5, preventing the dust from splashing everywhere during material screening and effectively avoiding the situation of dust diffusion, ensuring the health of the staff.

[0024] A long strip opening 21 is formed on the upper surface of the cylindrical screen 14, making the dust generated during screening more easily extracted by the dust suction square cover 10. A blanking cylinder 2 is fixedly inlaid on the bottom surface of the screening square box 1. A plurality of square columns 20 are fixedly connected to the bottom surface of the screening square box 1, facilitating the collection of the screened materials through the blanking cylinder 2 and making the device more stable during use. An opening 4 is formed on the left side surface of the screening square box 1, and the size of the opening 4 matches that of the feeding hopper 3, ensuring that the feeding hopper 3 will not collide with the screening square box 1 when it rotates reciprocally, guaranteeing safety.

[0025] Two support columns 15 are fixedly connected to the inner bottom wall of the screening square box 1. The upper surfaces of the two support columns 15 are jointly fixedly installed with an arc-shaped slide rail 16. A sliding block 17 is slidably connected inside the arc-shaped slide rail 16. The outer surface of the sliding block 17 is fixedly connected to the bottom surface of the cylindrical sieve 14. When adjusting the screening of the cylindrical sieve 14, the sliding block 17 can be driven to reciprocate inside the arc-shaped slide rail 16, making the screening of the cylindrical sieve 14 more stable. Two inclined supports 19 are fixedly connected to the upper surface of the dust removal box 5. A circular sleeve 18 is fixedly connected to the outer surface of the conveying conduit 9, and the outer surface of the circular sleeve 18 is fixedly connected to the outer surfaces of the two inclined supports 19. The provided circular sleeve 18 can make the conveying conduit 9 more stable and prevent it from being bent. The feeding hopper 3 is inclined and is installed on the left side of the cylindrical sieve 14. The provided feeding hopper 3 can make it more convenient to add materials during screening and has the advantage of simpler operation.

[0026] The working principle of the present utility model is as follows: When using this device for screening, materials to be screened can be added into the cylindrical sieve 14 through the feeding hopper 3. Then, the rotating motor 12 is operated to drive the cylindrical sieve 14 and the U-shaped connecting frame 13 to rotate, so that the materials in the cylindrical sieve 14 are screened reciprocally and collected through the blanking cylinder 2. During screening, the negative pressure exhaust fan 7 can be started to operate to generate negative pressure inside the dust removal box 5. The dust generated during screening inside the screening square box 1 is sucked through the conveying conduit 9 and the dust suction hood 10. The dust enters the dust removal box 5 through the dust suction hood 10 and the conveying conduit 9 and is collected inside the dust removal box 5 under the filtering action of the filter screen 8, achieving the situation of preventing dust from flying everywhere and effectively ensuring environmental safety.

[0027] The above-mentioned is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0028] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A screening device for coal mining with the function of preventing dust splashing, comprising a screening box (1), characterized in that: The back of the screening box (1) is fixedly connected to a dust removal box (5), the outer surface of the dust removal box (5) is provided with a sealing door (6), the back of the dust removal box (5) is fixedly mounted with a negative pressure exhaust fan (7), the inner wall of the dust removal box (5) is fixedly connected with a filter screen (8), the upper surface of the dust removal box (5) is fixedly connected with a conveying duct (9), the upper surface of the screening box (1) is fixedly inlaid with a dust collection hood (10), the end of the conveying duct (9) away from the dust removal box (5) is connected with the dust collection hood (10), the right side of the screening box (1) is fixedly mounted with a fixing frame (11), the interior of the fixing frame (11) is fixedly mounted with a rotating motor (12), the output end of the rotating motor (12) passes through the screening box (1) and is fixedly connected with a U-shaped connecting frame (13), the outer surface of the U-shaped connecting frame (13) is fixedly mounted with a cylindrical screen (14), and the outer surface of the cylindrical screen (14) is fixedly connected with a feeding hopper (3).

2. A screening device for coal mining with the function of preventing dust splashing according to claim 1, characterized in that: The upper surface of the cylindrical screen (14) is provided with a long opening (21).

3. The screening device for coal mining with the function of preventing dust splashing according to claim 1 is characterized in that: A lower material barrel (2) is fixedly embedded on the bottom surface of the screening square box (1), and a plurality of square columns (20) are fixedly connected to the bottom surface of the screening square box (1).

4. The screening device for coal mining with the function of preventing dust splashing according to claim 1 is characterized in that: The left side surface of the screening box (1) is provided with a through opening (4), and the size of the through opening (4) matches the feeding hopper (3).

5. The screening device for coal mining with the function of preventing dust splashing according to claim 1 is characterized in that: Two support columns (15) are fixedly connected to the inner bottom wall of the screening box (1); an arc-shaped slide rail (16) is fixedly mounted on the upper surfaces of the two support columns (15); a sliding block (17) is slidably connected inside the arc-shaped slide rail (16); and an outer surface of the sliding block (17) is fixedly connected to the bottom surface of the cylindrical screen (14).

6. The screening device for coal mining with the function of preventing dust splashing according to claim 1 is characterized in that: The upper surface of the dust removal box (5) is fixedly connected to two inclined supports (19), the outer surface of the delivery duct (9) is fixedly connected to a circular collar (18), and the outer surface of the circular collar (18) is fixedly connected to the outer surfaces of the two inclined supports (19).

7. The screening device for coal mining with the function of preventing dust splashing according to claim 1 is characterized in that: The feeding hopper (3) is inclined, and is installed on the left side of the cylindrical screen (14).

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