Coal mine screening device

Abstract

The utility model relates to a coal mine screening device which comprises a screening box, and a multi-stage screening mechanism used for screening a coal mine is arranged in the screening box; the discharging barrel is installed above the screening box, a turnover mechanism and a drying mechanism are arranged in the discharging barrel, and a feeding opening is formed in the top end of the discharging barrel; the supporting frame is arranged on the ground, the top end of the supporting frame is connected with a mounting part, and the discharging barrel is fixedly connected to the mounting part. Therefore, through the multi-stage screening mechanism, the whole device can achieve the vibration grading screening effect, the raw materials can be divided into different grades according to the particle size, and therefore targeted application of the follow-up raw materials is facilitated. The raw materials can be fully overturned by the overturning mechanism, the raw materials can be dried when the whole device is used in cooperation with the drying mechanism, the raw materials can be overturned and dried through cooperation of the operation, the dryness of the raw materials during screening is guaranteed, and the screening effect of the follow-up screening procedure is further guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of coal mine screening, and specifically, to a coal mine screening device. Background Art

[0002] Coal mines can be divided into underground coal mines and surface coal mines, and are one of the main fuels. Especially in industrial production, the use of coal is essential. When coal mines are processed, coal blocks need to be sorted to adapt to more processing and use. Therefore, a coal block screening device is required.

[0003] Coal mine mining has the particularity of a relatively humid environment. In related technologies, when coal mines are screened after mining, due to excessive humidity, some small coal mines will adhere to the outside of large coal mines, making it difficult to screen the coal mines completely, and the overall screening effect is poor. Summary of the Utility Model

[0004] The purpose of the present disclosure is to provide a coal mine screening device to at least partially solve the problems existing in related technologies.

[0005] To achieve the above purpose, the present disclosure provides a coal mine screening device, including:

[0006] A screening box, in which a multi-stage screening mechanism for screening coal mines is provided;

[0007] A feeding bucket, installed above the screening box, in which a turning mechanism and a drying mechanism are provided, and a feeding port is opened at the top end of the feeding bucket; and

[0008] A support frame, placed on the ground, the top end of the support frame is connected with a mounting part, and the feeding bucket is fixedly connected to the mounting part.

[0009] Optionally, the turning mechanism includes a driving motor fixed on the feeding bucket and a rotating shaft installed in the feeding bucket, the rotating shaft is connected to the output end of the driving motor, and a stirring assembly is connected to the rotating shaft.

[0010] Optionally, the stirring assembly includes a first stirring frame and a second stirring frame arranged alternately, the first stirring frame and the second stirring frame are respectively configured as rings, and in the vertical direction and the horizontal direction, the size of the first stirring frame is larger than that of the second stirring frame.

[0011] Optionally, a discharge port is opened at the bottom end of the feeding bucket, a turntable is rotatably connected to the bottom end of the feeding bucket, the turntable is provided with a through hole, and the turntable is configured such that the through hole can communicate with the discharge port when rotating.

[0012] Optionally, the drying mechanism includes an electric heating tube embedded in the feeding bucket and a power supply member electrically connected to the electric heating tube.

[0013] Optionally, the multi-stage screening mechanism includes a vibration motor installed at the bottom end of the screening box, and a plurality of screening plates installed side by side in the screening box. A plurality of screening holes are respectively provided on the plurality of screening plates, and the aperture of the screening holes on the screening plate located above is larger than the aperture of the screening holes on the screening plate located below.

[0014] Optionally, a first screening plate, a second screening plate, and a third screening plate are sequentially installed in the screening box from top to bottom. The first screening plate is fixedly connected to the inner wall of the screening box. Placement grooves for the second screening plate and the third screening plate to extend into are formed on the side wall of the screening box. A T-shaped groove is formed on one side of the placement groove. T-shaped blocks that cooperate with the T-shaped groove are respectively provided on one side of the second screening plate and the third screening plate.

[0015] Optionally, a first through hole is formed on the side wall of the screening box at the position of the second screening plate, and a second through hole is formed on the side wall of the screening box at the position of the third screening plate. A first discharge guide plate for discharging the coal mine between the first screening plate and the second screening plate is installed at the first through hole, and a second discharge guide plate for discharging the coal mine between the second screening plate and the third screening plate is installed at the second through hole.

[0016] Optionally, the feeding bucket is placed directly above the first end of the screening box, and the second end of the screening plate is arranged to be inclined downward relative to the first end.

[0017] Optionally, the first discharge guide plate and the second discharge guide plate are arranged side by side at a position of the screening box close to the second end of the screening plate, and the length of the first discharge guide plate is greater than the length of the second discharge guide plate.

[0018] Through the above technical solutions, the overall device can achieve the effect of vibration classification screening through the multi-stage screening mechanism, so that the raw materials can be divided into different levels according to the particle size by using the effect of multi-stage screening, which is convenient for the targeted application of subsequent raw materials. At the same time, the flipping mechanism can fully flip the raw materials, and further cooperate with the drying mechanism so that the overall device can also perform drying treatment on the raw materials during use. Through the above operation cooperation, the raw materials can achieve the effect of flipping and drying, ensuring the dryness of the raw materials during screening and further ensuring the screening effect of the subsequent screening process.

[0019] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and form a part of the specification. Together with the following detailed description, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the accompanying drawings:

[0021] Figure 1 is a schematic structural view of a coal mine screening device provided by an exemplary embodiment of the present disclosure;

[0022] Figure 2 is a schematic structural view of another angle of the coal mine screening device provided by an exemplary embodiment of the present disclosure;

[0023] Figure 3 is a schematic structural view of a feeding bucket in the coal mine screening device provided by an exemplary embodiment of the present disclosure;

[0024] Figure 4 is a schematic structural view of a screening box in the coal mine screening device provided by an exemplary embodiment of the present disclosure;

[0025] Figure 5 is Figure 4 a partial enlarged view of A therein.

[0026] Explanation of reference numerals

[0027] 1 - screening box; 11 - placement groove; 12 - T-shaped groove; 2 - feeding bucket; 21 - feed inlet; 22 - discharge outlet; 23 - turntable; 3 - support frame; 31 - installation part; 41 - driving motor; 42 - rotating shaft; 43 - first stirring frame; 44 - second stirring frame; 51 - electric heating tube; 52 - power supply part; 53 - protective cover; 61 - vibration motor; 62 - first screening plate; 63 - second screening plate; 631 - first discharge guide plate; 64 - third screening plate; 641 - second discharge guide plate; 600 - T-shaped block; 7 - support column; 71 - elastic member Detailed description of the specific implementation

[0028] The following will provide a detailed description of the specific implementation of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure and does not limit the present disclosure.

[0029] In the present disclosure, unless otherwise stated, the orientation terms "upper", "lower", "top", and "bottom" are defined based on the actual use directions of the relevant components. "Inner" and "outer" refer to the outline of the corresponding components themselves. The use of terms such as "first" and "second" is for the purpose of distinguishing different components and does not have a sequential or important meaning. In the present disclosure, when the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0030] Refer to Figures 1 to 5, the present disclosure provides a coal screening device, which may include a screening box 1, a feeding bucket 2, and a support frame 3. Among them, a multi-stage screening mechanism for screening coal is provided inside the screening box 1; the feeding bucket 2 is installed above the screening box 1, and a flipping mechanism and a drying mechanism are provided inside the feeding bucket 2. An inlet 21 is opened at the top end of the feeding bucket 2; the support frame 3 is placed on the ground, and an installation part 31 is connected to the top end of the support frame 3, and the feeding bucket 2 is fixedly connected to the installation part 31. Specifically, the installation part 31 may be a limit clamp, and the feeding bucket 2 is clamped in the limit clamp.

[0031] Through the above technical solution, the multi-stage screening mechanism enables the overall device to achieve the effect of vibration grading screening, so that the raw materials can be divided into different levels according to the particle size, which is convenient for the targeted application of the subsequent raw materials. At the same time, the flipping mechanism can fully flip the raw materials, and further cooperate with the drying mechanism to enable the overall device to also perform drying treatment on the raw materials during use. Through the above operation cooperation, the raw materials can achieve the effect of flipping and drying, ensuring the dryness of the raw materials during screening and further ensuring the screening effect of the subsequent screening process.

[0032] As an exemplary embodiment of the present disclosure, refer to Figure 3 , the flipping mechanism may include a driving motor 41 fixed on the feeding bucket 2 and a rotating shaft 42 installed inside the feeding bucket 2. The rotating shaft 42 is connected to the output end of the driving motor 41, and a stirring assembly is connected to the rotating shaft 42. Specifically, a limit frame is provided at the top end of the feeding bucket 2, and the driving motor 41 is installed on the limit frame. When it is necessary to control the rotation of the raw materials inside the feeding bucket 2, the driving motor 41 is turned on to drive the rotating shaft 42 to rotate, and then drive the stirring assembly to rotate to control the rotation of the raw materials inside the feeding bucket 2.

[0033] Among them, refer to Figure 3 , the stirring assembly may include a first stirring frame 43 and a second stirring frame 44 arranged alternately. The first stirring frame 43 and the second stirring frame 44 are respectively configured as rings, and in the vertical direction and the horizontal direction, the size of the first stirring frame 43 is larger than that of the second stirring frame 44. Setting the first stirring frame 43 and the second stirring frame 44 to different sizes and arranging them alternately can enable them to fully flip the raw materials when rotating. Specifically, the first stirring frame 43 and the second stirring frame 44 may be perpendicularly arranged. The present disclosure does not limit the number of stirring frames.

[0034] Furthermore, refer to Figure 3, an outlet 22 may be provided at the bottom end of the feeding bucket 2. A turntable 23 is rotatably connected to the bottom end of the feeding bucket 2. The turntable 23 is provided with through holes, and the turntable 23 is configured such that the through holes can communicate with the outlet 22 when rotating. When discharging is required, at this time, only need to rotate the turntable 23 until the through hole coincides with the outlet 22, then automatic discharging can be achieved. In the embodiments of the present disclosure, the shapes and sizes of the through hole and the outlet 22 are the same.

[0035] In some embodiments, referring to Figure 3 , the drying mechanism may include an electric heating tube 51 embedded in the feeding bucket 2 and a power supply member 52 electrically connected to the electric heating tube 51. A protective cover 53 is provided on the outer wall of the feeding bucket 2, and the power supply member 52 is installed in the protective cover 53 to supply power to the electric heating tube 51. When it is necessary to dry the raw materials inside the feeding bucket 2, turn on the power supply member 52, control the electric heating tube 51 to heat, and then the raw materials inside the feeding bucket 2 will be automatically dried by heat transfer. Combining with the above-mentioned flipping mechanism, the effect of rotating drying can be achieved.

[0036] According to an exemplary embodiment of the present disclosure, referring to Figure 4 , the multi-stage screening mechanism may include a vibration motor 61 installed at the bottom end of the screening box 1, and a plurality of screening plates arranged in parallel in the screening box 1. A plurality of screening holes are respectively provided on the plurality of screening plates, and the aperture of the screening holes on the screening plate located above is larger than the aperture of the screening holes on the screening plate located below. When the raw materials inside the feeding bucket 2 are placed into the screening box 1 for screening, turn on the vibration motor 61 to drive the whole screening box 1 to vibrate, and synchronously drive the plurality of screening plates to vibrate. Using the effect of multi-stage screening, the raw materials can be divided into different levels according to the particle size. The coal can be arranged in descending order of particle size from top to bottom, which is convenient for the targeted application of subsequent raw materials.

[0037] Further, referring to Figure 4 , Figure 5 A first screening plate 62, a second screening plate 63 and a third screening plate 64 may be sequentially installed in the screening box 1 from top to bottom. The first screening plate 62 is fixedly connected to the inner wall of the screening box 1. A placement groove 11 for the second screening plate 63 and the third screening plate 64 to extend into is provided on the side wall of the screening box 1. A T-shaped groove 12 is formed on one side of the placement groove 11. T-shaped blocks 600 are respectively provided on one side of the second screening plate 63 and the third screening plate 64 and are matched with the T-shaped groove 12. The screening plates are clamped with the placement groove 11 through the T-shaped blocks 600, which is convenient for installation and disassembly and cleaning, and has a good use effect. And the first screening plate 62 placed at the top can be directly cleaned without disassembly. It should be noted that the present disclosure does not limit the number of screening plates.

[0038] Further, referring to Figure 2, a first through hole is provided on the side wall of the screening box 1 at the position of the second screening plate 63, and a second through hole is provided on the side wall of the screening box 1 at the position of the third screening plate 64. A first discharge guide plate 631 for discharging the coal mine between the first screening plate 62 and the second screening plate 63 is installed at the first through hole, and a second discharge guide plate 641 for discharging the coal mine between the second screening plate 63 and the third screening plate 64 is installed at the second through hole. During use, the raw materials with the largest particle size will be directly discharged through the first screening plate 62, the raw materials with the second largest particle size will be discharged under the guidance of the first discharge guide plate 631, and the raw materials with the third largest particle size will be discharged through the second discharge guide plate 641.

[0039] In some embodiments, referring to Figure 1 , the feeding bucket 2 can be placed directly above the first end of the screening box 1, and the second end of the screening plate is arranged to be inclined downward relative to the first end. The screening plate adopts an inclined design, and when vibrating, the raw materials will move from one side of the screening box 1 to the other side, and then be discharged after screening.

[0040] Specifically, referring to Figure 2 , the first discharge guide plate 631 and the second discharge guide plate 641 can be arranged side by side at the position of the screening box 1 close to the second end of the screening plate, and the length of the first discharge guide plate 631 is greater than the length of the second discharge guide plate 641. The collection box for collecting the raw materials discharged by the second discharge guide plate 641 is arranged closer to the screening box 1 than the collection box for collecting the raw materials discharged by the first discharge guide plate 631. After the vibration motor 61 is started, the raw materials will be automatically vibrated and screened. When the raw materials are transported to the second end of the screening plate, they can be discharged into the collection boxes of different particle sizes in sequence.

[0041] In addition, support columns 7 are installed at the bottom of the screening box 1, and elastic members 71 are provided in the middle of the support columns 7, which can play a role in damping when the screening box 1 vibrates.

[0042] The usage method of this coal mine screening device is as follows: First, pour the raw materials into the feeding bucket 2 through the feeding port 21. Subsequently, when it is necessary to dry the raw materials inside the feeding bucket 2, first turn on the power supply member 52, and automatically control the heating of the electric heating tube 51. Then, the raw materials inside the feeding bucket 2 will be automatically dried by heat transfer; when it is necessary to control the rotation of the raw materials inside the feeding bucket 2, turn on the driving motor 41, which will automatically drive the rotation of the rotating shaft 42, and then drive the first stirring frame 43 and the second stirring frame 44 to rotate synchronously to control the rotation of the raw materials inside the feeding bucket 2. The flipping mechanism and the drying mechanism cooperate with each other to achieve the effect of rotating and drying. Subsequently, when it is necessary to discharge the materials, only need to rotate the turntable 23 until the through hole can coincide with the discharge port 22, and then the materials can be automatically discharged.

[0043] When the raw materials inside the feeding bucket 2 are discharged for screening, it is necessary to start the vibration motor 61, which automatically drives the entire screening box 1 to vibrate. Since the screening plate is inclined, the raw materials will move from one side of the screening box 1 to the other side during vibration. When the screening box 1 vibrates, it will also drive the first screening plate 62, the second screening plate 63, and the third screening plate 64 to vibrate synchronously. Subsequently, when the raw materials move, they will automatically be vibration-screened and arranged in descending order of particle size from top to bottom. Thus, when the raw materials are transported to the second end of the screening plate, the raw materials with the largest particle size will be directly discharged through the first screening plate 62, the raw materials with the second largest particle size will be discharged under the guidance of the first discharge guide plate 631, and the raw materials with the third largest particle size will be discharged through the second discharge guide plate 641.

[0044] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0045] In addition, it should be noted that, in the case of no conflict, the various specific technical features described in the above specific embodiments can be combined in any suitable manner. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0046] Furthermore, any combination can be made between the various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A coal mine screening device, characterized in that: include: A screening box, wherein a multi-stage screening mechanism for screening coal is arranged in the screening box; A discharge barrel is installed above the screening box, a turning mechanism and a drying mechanism are arranged in the discharge barrel, and a feed port is opened at the top of the discharge barrel; and The support frame is placed on the ground, the top of the support frame is connected with a mounting portion, and the discharge barrel is fixedly connected to the mounting portion.

2. The coal mine screening device according to claim 1, characterized in that: The turning mechanism comprises a driving motor fixed on the material discharging barrel and a rotating shaft installed in the material discharging barrel, wherein the rotating shaft is connected to the output end of the driving motor and a stirring assembly is connected to the rotating shaft.

3. The coal mine screening device according to claim 2, characterized in that: The stirring assembly comprises a first stirring frame and a second stirring frame which are arranged alternately. The first stirring frame and the second stirring frame are respectively constructed in a ring shape. In the vertical direction and the horizontal direction, the size of the first stirring frame is larger than that of the second stirring frame.

4. The coal mine screening device according to claim 1, characterized in that: A discharge port is provided at the bottom end of the discharge barrel, and a turntable is rotatably connected to the bottom end of the discharge barrel. A through hole is provided on the turntable, and the turntable is configured so that the through hole can communicate with the discharge port when the turntable rotates.

5. The coal mine screening device according to claim 1, characterized in that: The drying mechanism comprises an electric heating tube embedded in the material discharging barrel and a power supply member electrically connected to the electric heating tube.

6. The coal mine screening device according to claim 1, characterized in that: The multi-stage screening mechanism includes a vibration motor installed at the bottom end of the screening box, and a plurality of screening plates installed in parallel in the screening box, wherein the plurality of screening plates are respectively provided with a plurality of screening holes, and the aperture diameter of the screening holes of the upper screening plate is larger than the aperture diameter of the screening holes of the lower screening plate.

7. The coal mine screening device according to claim 6, characterized in that: The first screen plate, the second screen plate and the third screen plate are installed in the screening box from top to bottom in sequence. The first screen plate is fixedly connected to the inner wall of the screening box. The side wall of the screening box is provided with a placement groove for the second screen plate and the third screen plate to extend into. A T-shaped groove is formed on one side of the placement groove. One side of the second screen plate and the third screen plate are respectively provided with a T-shaped block matching the T-shaped groove.

8. The coal mine screening device according to claim 7, characterized in that: A first through hole is opened on the side wall of the screening box at the position of the second screening plate, and a second through hole is opened on the side wall of the screening box at the position of the third screening plate. A first discharge guide plate for guiding out the coal between the first screening plate and the second screening plate is installed at the first through hole, and a second discharge guide plate for guiding out the coal between the second screening plate and the third screening plate is installed at the second through hole.

9. The coal mine screening device according to claim 8, characterized in that: The discharge barrel is placed directly above the first end of the screening box, and the second end of the screening plate is arranged to be tilted downward relative to the first end.

10. The coal mine screening device according to claim 9, characterized in that: The first discharge guide plate and the second discharge guide plate are arranged side by side at a position of the screening box close to the second end of the screening plate, and the length of the first discharge guide plate is greater than the length of the second discharge guide plate.

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