Screening assembly for coal mining
By designing a screening component with adjustable screen holes, the problem of difficult adjustment of screen components was solved, achieving flexible screening and reducing coal breakage, thus improving screening efficiency and quality.
Patent Information
- Application Number
- CN202520015720.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Existing coal screen components are difficult to adjust the screen aperture size, which requires the preparation of multiple sets of screen components, increasing screening costs, and the coal is easily damaged during the screening process.
An adjustable screen size screening component was designed. The shaking of the screening box is controlled by an electric push rod and the position of the screen rod is adjusted by a multi-directional screw to achieve the screening of coal of different specifications. A buffer structure is provided to reduce coal breakage.
It enables flexible adjustment of screen aperture size, reduces screening costs and coal breakage, and improves screening quality and integrity.
Smart Images
Figure CN223775393U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening components technology, and more specifically, to a screening component for coal mining. Background Technology
[0002] In the process of coal mining, in order to ensure that the coal specifications are suitable for different user needs and thus achieve the effect of effective and rational use of coal and saving coal consumption, it is necessary to screen the coal by specifications.
[0003] In the current process of screening coal by specifications, screen assemblies are mostly used. However, it is difficult to adjust the screen aperture size of screen assemblies. When screening coal of different specifications, multiple sets of screen assemblies need to be prepared, which increases the screening cost.
[0004] Based on this, we propose a screening component for coal mining. Summary of the Invention
[0005] The main objective of this invention is to provide a screening component for coal mining to overcome the problems mentioned in the background section.
[0006] To achieve the above objectives, this utility model provides a screening component for coal mining, including a screening box. The front end of the upper surface of the screening box has a feed inlet, and the rear end of the upper surface of the screening box is fixedly installed with an electric push rod. The front end of the lower surface of the feed inlet is movably installed with a baffle via a hinge. A compression spring is fixedly installed in the middle of the rear end of the upper surface of the baffle, and the other end of the compression spring is fixedly connected to the inner top surface of the screening box.
[0007] A screening box is movably installed in the middle of the screening box. A movable shaft seat is fixedly provided in the middle of the rear end of the upper surface of the screening box. The output end of the electric push rod extends through the screening box and is movably sleeved and connected to the outer surface of the movable shaft seat. A fixed frame is fixedly installed on the lower surface of the screening box.
[0008] The four sides of the inner surface of the fixed frame are provided with adjustment grooves. The first main screen rod is fixedly installed at the middle of the front and rear ends of the inner surface of the fixed frame. Several first auxiliary screen rods are evenly and movably arranged on both sides of the outer surface of the first main screen rod. The two ends of the first main screen rod and the first auxiliary screen rod extend outward through the adjustment grooves. The two sides of the inner surface of the fixed frame are fixedly installed with a second main screen rod. Several second auxiliary screen rods are evenly and movably arranged at the front and rear ends of the outer surface of the second main screen rod. The two ends of the second main screen rod and the second auxiliary screen rod extend outward through the adjustment grooves.
[0009] The second main screen rod and the second auxiliary screen rod are both sleeved on the outer surfaces of the first main screen rod and the first auxiliary screen rod. One end of the first main screen rod and the second main screen rod is movably fitted with a multi-directional screw. One end of the first auxiliary screen rod and the second auxiliary screen rod is movably sleeved on the outer surface of the multi-directional screw.
[0010] As a further improvement of this utility model, a discharge port is provided in the middle of the lower surface of the screening box, and support legs are fixedly provided at the four corners of the lower surface of the screening box. An opening is provided in the middle of the front end of the outer surface of the screening box, and an observation window is movably installed on the inner surface of the screening box through the opening.
[0011] As a further improvement of this utility model, a support shaft is fixedly provided on the middle of both sides of the outer surface of the screening box, and the other end of the support shaft extends outward through the screening box.
[0012] As a further improvement of this utility model, the other ends of the first main screen rod and the second main screen rod are fixedly fitted with limiting rods, and the other ends of the first auxiliary screen rod and the second auxiliary screen rod are movably sleeved on the outer surface of the limiting rods.
[0013] As a further improvement of this utility model, the outer surface of the multi-directional screw is uniformly provided with several bidirectional threads, and the first auxiliary screen rod and the second auxiliary screen rod are respectively sleeved and connected to the multi-directional screw with corresponding bidirectional threads.
[0014] The beneficial effects of this utility model are:
[0015] This invention allows for adjustment of the screen aperture size, making it suitable for screening coal of different specifications. It avoids the need to prepare multiple sets of screen components for screening different specifications of coal, which would increase screening costs. At the same time, it can buffer the flow of coal during screening, thereby reducing the degree of damage during coal transportation and screening, which helps to ensure the integrity of coal screening and improve screening quality. Attached Figure Description
[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0017] Figure 1 This is a front three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a cross-sectional schematic diagram of the screening box structure of this utility model;
[0019] Figure 3 This is a sectional view of the screening box structure of this utility model.
[0020] Figure 4 This is a schematic diagram showing the disassembled fixed frame structure of this utility model;
[0021] Figure 5 This is a magnified schematic diagram of the baffle structure of this utility model.
[0022] In the diagram: 1. Screening box; 101. Discharge port; 102. Support leg; 103. Observation window; 104. Feed inlet; 105. Electric push rod; 2. Screening box; 201. Support shaft; 202. Movable shaft seat; 3. Fixed frame; 4. First main screen rod; 401. First auxiliary screen rod; 5. Second main screen rod; 501. Second auxiliary screen rod; 6. Multi-directional screw; 7. Limiting rod; 8. Baffle; 801. Compression spring. Detailed Implementation
[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0026] To make the objectives and advantages of this utility model clearer, the utility model will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.
[0027] Please see Figures 1-5As shown, a screening assembly for coal mining includes a screening box 1. A discharge port 101 is provided in the middle of the lower surface of the screening box 1. Support legs 102 are fixedly provided at the four corners of the lower surface of the screening box 1. An opening is provided in the middle of the front end of the outer surface of the screening box 1. An observation window 103 is movably installed on the inner surface of the screening box 1 through the opening.
[0028] The front end of the upper surface of the screening box 1 is provided with a feed inlet 104, and the rear end of the upper surface of the screening box 1 is fixedly installed with an electric push rod 105. The front end of the lower surface of the feed inlet 104 is movably installed with a baffle 8 via a hinge. The middle of the rear end of the upper surface of the baffle 8 is fixedly installed with a compression spring 801, and the other end of the compression spring 801 is fixedly connected to the inner top surface of the screening box 1.
[0029] Screening box 2 is movably installed in the middle of screening box 1. Support shafts 201 are fixedly installed in the middle of both sides of the outer surface of screening box 2. The other end of the support shafts 201 extends outward through screening box 1. Movable shaft seat 202 is fixedly installed in the middle of the rear end of the upper surface of screening box 2. The output end of electric push rod 105 extends inward through screening box 1 and is movably connected to the outer surface of movable shaft seat 202. Fixed frame 3 is fixedly installed on the lower surface of screening box 2.
[0030] Adjustment grooves are provided through the center of each of the four sides of the inner surface of the fixed frame 3. The first main screen rod 4 is fixedly installed at the center of the front and rear ends of the inner surface of the fixed frame 3. Several first auxiliary screen rods 401 are evenly and movably arranged on both sides of the outer surface of the first main screen rod 4. Both ends of the first main screen rod 4 and the first auxiliary screen rod 401 extend outward through the adjustment grooves. The second main screen rod 5 is fixedly installed at the center of both sides of the inner surface of the fixed frame 3. Several second auxiliary screen rods 501 are evenly and movably arranged at the front and rear ends of the outer surface of the second main screen rod 5. Both ends of the second main screen rod 5 and the second auxiliary screen rod 501 extend outward through the adjustment grooves.
[0031] The second main screen rod 5 and the second auxiliary screen rod 501 are both sleeved on the outer surfaces of the first main screen rod 4 and the first auxiliary screen rod 401. One end of the first main screen rod 4 and the second main screen rod 5 is movably fitted with a multi-directional screw 6. One end of the first auxiliary screen rod 401 and the second auxiliary screen rod 501 is movably sleeved on the outer surface of the multi-directional screw 6.
[0032] The outer surface of the multi-directional screw 6 is uniformly provided with several bidirectional threads. The first auxiliary screen rod 401 and the second auxiliary screen rod 501 are respectively sleeved and connected to the multi-directional screw 6 with corresponding bidirectional threads. The other ends of the first main screen rod 4 and the second main screen rod 5 are fixedly installed with limit rods 7. The other ends of the first auxiliary screen rod 401 and the second auxiliary screen rod 501 are movably sleeved on the outer surface of the limit rods 7.
[0033] In use, coal can first be poured into the screening box 1 through the feed inlet 104. At this time, the coal will accumulate above the baffle 8. As the coal continues to increase, the pressure on the baffle 8 increases, and the compression spring 801 will gradually stretch, thereby opening the baffle 8 to allow the coal to enter the screening box 2 set in the screening box 1 normally. The baffle 8 buffers the distance of the coal from the feed inlet 104 to the screening box 2, reducing the degree of coal breakage. When the coal above the baffle 8 gradually decreases, the pressure on the baffle 8 will gradually decrease, and the compression spring 801 will gradually return to its original position, causing the baffle 8 to close again, ensuring the airtightness of the screening space and reducing the leakage of coal dust during the coal screening process.
[0034] When coal flows into the screening box 2, the electric push rod 105 can be activated to extend and retract. At this time, the support shaft 201 is used as the center point of motion, and the extension and retraction of the electric push rod 105 controls the screening box 2 to shake back and forth. At this time, the coal will be screened through the screen composed of the first main screen rod 4, the first auxiliary screen rod 401, the second main screen rod 5, and the second auxiliary screen rod 501, and discharged from the screening box 1 through the discharge port 101.
[0035] Secondly, when the coal needs to be screened to an adjusted size, the observation window 103 at the front of the screening box 1 can be opened. At this time, the screening personnel can control the movement and adjustment of the first auxiliary screen rod 401 and the second auxiliary screen rod 501 by turning the multi-directional screw 6 clockwise and counterclockwise. This allows for the adjustment of the screen mesh size composed of the first main screen rod 4, the first auxiliary screen rod 401, the second main screen rod 5, and the second auxiliary screen rod 501, which can then be used for screening coal of different sizes.
[0036] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.
Claims
1. A screening assembly for coal mining, characterised in that, Including screening box (1), the front end of the upper surface of the screening box (1) is provided with a feeding port (104), the rear end of the upper surface of the screening box (1) is fixedly installed with an electric push rod (105), the lower surface of the feeding port (104) is movably installed with a baffle (8) through a hinge, the rear end of the upper surface of the baffle (8) is fixedly installed with a compression spring (801), and the other end of the compression spring (801) is fixedly connected with the inner top surface of the screening box (1); The inner middle part of the screening box (1) is movably installed with a screening box (2), the rear end of the upper surface of the screening box (2) is fixedly provided with a movable shaft seat (202), the output end of the electric push rod (105) extends through the screening box (1) and is movably connected with the outer surface of the movable shaft seat (202), and the lower surface of the screening box (2) is fixedly installed with a fixed frame (3); The middle part of the four sides of the inner surface of the fixed frame (3) is movably provided with an adjusting groove, the middle part of the front end and the rear end of the inner surface of the fixed frame (3) is movably installed with a first main sieve rod (4), the two sides of the outer surface of the first main sieve rod (4) are movably provided with a plurality of first auxiliary sieve rods (401), the two ends of the first main sieve rod (4) and the first auxiliary sieve rod (401) extend out through the adjusting groove, the middle part of the two sides of the inner surface of the fixed frame (3) is movably installed with a second main sieve rod (5), the front end and the rear end of the outer surface of the second main sieve rod (5) are movably provided with a plurality of second auxiliary sieve rods (501), and the two ends of the second main sieve rod (5) and the second auxiliary sieve rod (501) extend out through the adjusting groove. The second main sieve rod (5) and the second auxiliary sieve rod (501) are movably provided on the outer surface of the first main sieve rod (4) and the first auxiliary sieve rod (401), one end of the first main sieve rod (4) and the second main sieve rod (5) is movably provided with a multidirectional screw rod (6), and one end of the first auxiliary sieve rod (401) and the second auxiliary sieve rod (501) is movably provided on the outer surface of the multidirectional screw rod (6).
2. A screening assembly for coal mining as claimed in claim 1 wherein, The middle part of the lower surface of the screening box (1) is provided with a discharge port (101), the four corners of the lower surface of the screening box (1) are fixedly provided with supporting legs (102), and the middle part of the front end of the outer surface of the screening box (1) is provided with an opening.
3. A screening assembly for coal mining as claimed in claim 1 wherein, The middle part of the outer surface of the screening box (2) is movably provided with a supporting shaft (201), and the other end of the supporting shaft (201) extends out through the screening box (1).
4. A screening assembly for coal mining as claimed in claim 1, wherein, The other end of the first main sieve rod (4) and the second main sieve rod (5) is movably provided with a limiting rod (7), and the other end of the first auxiliary sieve rod (401) and the second auxiliary sieve rod (501) is movably provided on the outer surface of the limiting rod (7).
5. A screening assembly for coal mining as claimed in claim 1, wherein, The outer surface of the multidirectional screw rod (6) is movably provided with a plurality of bidirectional threads, and the first auxiliary sieve rod (401) and the second auxiliary sieve rod (501) are movably provided on the outer surface of the multidirectional screw rod (6).