Lump coal separation device

Abstract

The present invention discloses a lump coal sorting device, which comprises: a cylinder, a screen, a feed port, a discharge port, a stirring device and a power module. The cylinder comprises a first cavity and a second cavity, the screen is arranged in the cylinder, and the closed-loop space surrounded by the screen is the first cavity, and the space between the screen and the inner wall of the cylinder is the second cavity; the feed port is connected to the first cavity. The discharge port comprises: a first discharge port connected to the first cavity, and a second discharge port connected to the second cavity. The stirring device is axially arranged inside the first cavity, and is used to drive the lump coal to rotate. The power module is connected to the stirring device, and is used to drive the stirring device to rotate. The lump coal sorting device provided by the present invention completes the lump coal sorting by making the lump coal do a circular motion, so that the smaller lump coal is thrown out through the screen, and the sorting efficiency is high. Moreover, by continuously injecting the mixed lump coal to be sorted and collecting the sorted lump coal, the lump coal sorting process can be carried out uninterruptedly.

Description

Technical Field

[0001] The invention relates to the technical field of raw coal sorting, and in particular to a lump coal sorting device. Background Art

[0002] In coalfield production, the mined raw coal contains lumps of various sizes with different particle sizes. In different production scenarios, selecting lumps of appropriate sizes as fuel can improve production efficiency and utilization of lumps. Therefore, it is necessary to sort mixed lumps of various sizes.

[0003] The prior art uses vibration screening to sort lump coal, placing mixed lump coal on a screen, and vibrating the screen up and down to make the lump coal with a size smaller than the screen aperture fall from the screen, thus completing the lump coal screening.

[0004] The inventors found that the prior art has at least the following problems:

[0005] When the screen vibrates up and down to cause the mixed coal lumps on it to vibrate up and down, the dispersion degree of the mixed coal lumps is low, resulting in low sorting efficiency. Summary of the invention

[0006] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a lump coal separator which utilizes centrifugal force to separate lump coal.

[0007] To this end, the present invention discloses a lump coal sorting device. The lump coal sorting device comprises a cylinder, a screen, a feed port, a discharge port, a stirring device and a power module;

[0008] The cylinder includes a first cavity and a second cavity, the screen is arranged in the cylinder, and the closed loop space surrounded by the screen is the first cavity, and the space between the screen and the inner wall of the cylinder is the second cavity;

[0009] The feed port is connected to the first cavity;

[0010] The discharge port includes: a first discharge port communicating with the first cavity, and a second discharge port communicating with the second cavity;

[0011] The stirring device is axially arranged inside the first cavity to drive the coal lump to rotate;

[0012] The power module is connected to the stirring device and is used to drive the stirring device to rotate.

[0013] Furthermore, in the lump coal sorting device, the first cavity is a columnar structure or an inverted cone structure.

[0014] Furthermore, in the lump coal sorting device, the first discharge port is a variable diameter structure with an inner diameter gradually decreasing from top to bottom;

[0015] The second discharge port is a variable diameter structure with an inner diameter gradually decreasing from top to bottom.

[0016] Furthermore, in the lump coal sorting device, the stirring device is a spiral stirring mechanism.

[0017] Furthermore, in the lump coal sorting device, the stirring equipment includes: a main shaft, and helically distributed blades arranged on the main shaft.

[0018] Furthermore, in the lump coal sorting device, the angle between the screen and the main axis is 15 degrees to 35 degrees.

[0019] Further, in the lump coal sorting device, the power module includes a motor, a reducer, and a transmission mechanism connected in sequence;

[0020] The transmission mechanism is connected to the stirring device.

[0021] Furthermore, in the lump coal sorting device, the transmission mechanism is a belt drive.

[0022] The main advantages of the technical solution of the present invention are as follows:

[0023] The lump coal sorting device provided by the present invention makes the lump coal do circular motion, so that the smaller lump coal is thrown out through the screen and enters the second cavity, and the lump coal in the first cavity and the second cavity is discharged from the first discharge port and the second discharge port respectively, and the lump coal is sorted by centrifugal force, and the sorting efficiency is high. And by continuously injecting the mixed lump coal to be sorted, and collecting the sorted lump coal at the first discharge port and the second discharge port, the lump coal sorting process can be carried out uninterruptedly. Compared with the prior art through screening, there is no need to process the lump coal left on the screen, which reduces the labor intensity and reduces the consumption of manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the embodiments of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 A schematic structural diagram of a lump coal sorting device provided in one embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1-cylinder, 101-first cavity, 102-second cavity, 2-screen, 3-feed port, 4-discharge port, 401-first discharge port, 402-second discharge port, 5-stirring device, 6-power module, 601-motor, 602-reducer, 603-transmission mechanism. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.

[0030] As attached Figure 1 As shown, an embodiment of the present invention provides a lump coal sorting device, which includes: a cylinder 1, a screen 2, a feed port 3, a discharge port 4, a stirring device 5 and a power module 6; the cylinder 1 includes a first cavity 101 and a second cavity 102, the screen 2 is arranged in the cylinder 1, and the closed-loop space surrounded by the screen 2 is the first cavity 101, and the space between the screen 2 and the inner wall of the cylinder 1 is the second cavity 102; the feed port 3 is connected to the first cavity 101; the discharge port 4 includes: a first discharge port 401 connected to the first cavity 101, and a second discharge port 402 connected to the second cavity 102; the stirring device 5 is axially arranged inside the first cavity 101, for driving the lump coal to rotate; the power module 6 is connected to the stirring device 5, for driving the stirring device 5 to rotate.

[0031] When used, the mixed coal lump enters the first cavity 101 in the cylinder 1 through the feed port 3, and under the action of the stirring mechanism, the mixed coal lump makes a circular motion in the process of falling in the first cylinder 1. Under the action of centrifugal force, the mixed coal lump moves outward to the screen 2, and the coal lump with a size smaller than the aperture of the screen 2 passes through the screen 2 and enters the second cavity 102, and is discharged from the second discharge port 402. The coal lump with a size larger than the aperture of the screen 2 moves downward in the first cavity 101 and is discharged from the first discharge port 401. The discharged coal lump is collected at the first discharge port 401 and the second discharge port 402 respectively, so that two batches of coal lump with different sizes can be obtained.

[0032] The lump coal in the mixed lump coal is an irregular structure, and its size in different directions is different. The lump coal with a size smaller than the aperture of the mesh 2 refers to the lump coal with a maximum size smaller than the aperture of the mesh 2, and the lump coal with a size larger than the aperture of the mesh 2 refers to the lump coal with a maximum size larger than the aperture of the mesh 2.

[0033] The lump coal sorting device provided in the embodiment of the present invention makes the lump coal do circular motion. Under the action of centrifugal force, the smaller lump coal is thrown out through the screen 2 and enters the second cavity 102. The lump coal in the first cavity 101 and the second cavity 102 is discharged from the first discharge port 401 and the second discharge port 402 respectively to complete the lump coal sorting. The sorting efficiency is high, and the lump coal sorting process can be carried out uninterruptedly by continuously injecting the mixed lump coal to be sorted and collecting the sorted lump coal at the first discharge port 401 and the second discharge port 402. Compared with the prior art, there is no need to process the lump coal left on the screen 2 after screening, which reduces the labor intensity and reduces the consumption of manpower and material resources.

[0034] In the embodiment of the present invention, the screen 2 is used to screen the lump coal, and the aperture of the screen 2 determines the sorting standard. During the production process, those skilled in the art can select the screen 2 with an appropriate aperture according to actual production needs so that the size of the lump coal after screening meets the use requirements.

[0035] Furthermore, by selecting screens 2 of different sizes to sort the lump coal multiple times, the mixed lump coal can be divided into multiple batches of lump coal of different sizes. For example, the aperture of the screen 2 is selected as the first preset size, and after the mixed lump coal is sorted into two batches, the aperture of the screen 2 can be changed to the second preset size. If the second preset size is smaller than the first preset size, the lump coal discharged from the second discharge port 402 is put into the first cavity 101 from the feed port 3 for secondary sorting; if the second preset size is larger than the first preset size, the lump coal discharged from the first discharge port 401 is put into the first cavity 101 from the feed port 3 for secondary sorting, and the mixed lump coal is sorted into three batches of lump coal of different sizes. By analogy, the lump coal can be sorted three times, four times, etc., which are not listed one by one in this embodiment.

[0036] The first cavity 101 surrounded by the screen 2 is a columnar structure or an inverted cone structure. With such a configuration, when the lump coal moves in a circle under the action of the stirring mechanism, it is easy to pass through the screen 2 and enter the second cavity 102.

[0037] When the first cavity 101 surrounded by the screen 2 is an inverted cone-shaped structure, part of the lump coal falls on the screen 2 during the falling process, which reduces the falling speed of the lump coal, prolongs the time for the lump coal to pass through the first cavity 101, and improves the sorting effect. On the other hand, when the lump coal initially falls in, part of the lump coal can be sorted under the action of gravity, thereby improving the sorting efficiency.

[0038] In the embodiment of the present invention, the first discharge port 401 is a variable diameter structure with a gradually decreasing inner diameter from top to bottom; the second discharge port 402 is a variable diameter structure with a gradually decreasing inner diameter from top to bottom. Such a configuration facilitates the collection of lump coal. It can be understood that, under the premise that the second cavity 102 is located outside the first cavity 101, the second discharge port 402 is located outside the first discharge port 401.

[0039] Furthermore, the first discharge port 401 and the second discharge port 402 can be aligned with a conveyor belt respectively, and the sorted coal blocks are transported to a warehouse or a target production site through the conveyor belt. With this arrangement, the staff does not need to monitor the degree of coal block accumulation after the coal block sorting in real time, thereby improving the degree of automation of coal block sorting.

[0040] The stirring device 5 may have a variety of structures, as long as it can make the mixed coal lump produce a circular motion in the first cavity 101. The structure of the stirring device 5 is illustrated below:

[0041] As an example, the stirring device 5 is a spiral stirring mechanism, including a main shaft and blades arranged on the main shaft. The blades of the spiral stirring mechanism are continuously distributed in a spiral shape from top to bottom, and each position of the mixed lump coal can be affected by the stirring device 5 during the falling process in the first cavity 101, so that the circular motion of the lump coal during the falling process is more uniform, which is conducive to improving the sorting efficiency.

[0042] As another example, the stirring device 5 may also include: a main shaft, and a plurality of stirring blades arranged on the main shaft. The plurality of stirring blades may be distributed in layers along the axial direction on the main shaft, and each layer includes a plurality of stirring blades uniformly distributed along the circumferential direction. Such a configuration can play a stirring role, so that the mixed coal lump performs a circular motion during the falling process in the first cavity 101.

[0043] The angle between the screen 2 and the main shaft of the stirring device 5 can be 15 degrees to 35 degrees, for example, 15 degrees, 25 degrees, 35 degrees, etc. Different angles between the screen 2 and the main shaft are suitable for different sorting scenarios. Those skilled in the art can set the screen 2 according to the hardness of the mixed lump coal, the softness of the coal, and the water content of the coal, so that the screen 2 and the main shaft maintain a preset angle, so that the size of the screened lump coal meets the actual production requirements.

[0044] As described above, no matter which structure the stirring device 5 adopts, it can include a main shaft axially arranged in the first cavity 101, and bearings can be respectively arranged at both ends of the main shaft, and the bearings are fixed to the center positions of the upper and lower end surfaces of the cylinder 1 through a multi-claw chuck. Such an arrangement enables the stirring device 5 to be axially fixed in the cylinder 1 without affecting the stirring device 5 to rotate with its own axis as the rotation axis. Among them, the number of claws of the multi-claw chuck can be determined according to the actual required coal block diameter size. For example, the multi-claw chuck can be a three-claw chuck, a four-claw chuck, a five-claw chuck, etc.

[0045] In an embodiment of the present invention, the rotation of the stirring device 5 is driven by a power module 6. As an example, the power module 6 can be a motor arranged at the top of the cylinder 1. The main shaft of the stirring device 5 is connected to the output shaft of the motor and can rotate under the action of the motor.

[0046] As another example, the power module 6 includes a motor 601, a reducer and a transmission mechanism 603 connected in sequence, and the transmission mechanism 603 is connected to the stirring device 5. The output torque of the motor 601 acts on the transmission mechanism 603 through the reducer 602, and the transmission mechanism 603 drives the stirring device 5 to rotate.

[0047] The transmission mechanism 603 can be of various types as long as it can realize the transmission of torque. For example, the transmission mechanism 603 is a belt drive. When the transmission mechanism 603 is a belt drive, the transmission belt is connected between the reducer 602 and the stirring device 5 to transmit torque, so that the stirring device 5 can rotate under the drive of the motor 601, drive the mixed lump coal to perform a circular motion, and realize lump coal separation.

[0048] Alternatively, the transmission mechanism 603 may also be a chain transmission, a worm transmission, etc., which are not listed one by one in the embodiment of the present invention.

[0049] The lump coal sorting device provided by the present invention makes the lump coal do circular motion, so that the smaller lump coal is thrown out through the screen 2 and enters the second cavity 102, and the lump coal in the first cavity 101 and the second cavity 102 is discharged from the first discharge port 401 and the second discharge port 402 respectively, and the lump coal is sorted by centrifugal force, and the sorting efficiency is high. And by continuously injecting the mixed lump coal to be sorted, and collecting the sorted lump coal at the first discharge port 401 and the second discharge port 402, the lump coal sorting process can be carried out uninterruptedly. Compared with the prior art through screening, there is no need to process the lump coal left on the screen, which reduces the labor intensity and reduces the consumption of manpower and material resources.

[0050] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lump coal sorting device, characterized in that: The device comprises: a cylinder (1), a screen (2), a feed port (3), a discharge port (4), a stirring device (5) and a power module (6); The cylinder (1) comprises a first cavity (101) and a second cavity (102); the screen (2) is arranged in the cylinder (1), and the closed loop space enclosed by the screen (2) is the first cavity (101), and the space between the screen (2) and the inner wall of the cylinder (1) is the second cavity (102); The feed port (3) is in communication with the first cavity (101); The discharge port (4) comprises: a first discharge port (401) communicating with the first cavity (101), and a second discharge port (402) communicating with the second cavity (102); The stirring device (5) is axially arranged inside the first cavity (101) and is used to drive the coal lump to rotate; The power module (6) is connected to the stirring device (5) and is used to drive the stirring device (5) to rotate; The first cavity (101) is an inverted cone-shaped structure; The first discharge port (401) is a variable diameter structure with an inner diameter gradually decreasing from top to bottom; The second discharge port (402) is a variable diameter structure with an inner diameter gradually decreasing from top to bottom; The stirring device (5) is a spiral stirring mechanism; The stirring device (5) comprises: a main shaft, and paddles arranged on the main shaft and distributed in a spiral shape; The angle between the screen (2) and the main axis is 15 degrees to 35 degrees; Different angles between the screen 2 and the main shaft are suitable for different sorting scenarios. The screen 2 is set according to the hardness of the mixed lump coal, the softness of the coal, and the water content of the coal, so that the screen 2 and the main shaft maintain a preset angle, so that the size of the screened lump coal meets the actual production needs; The power module (6) comprises a motor (601), a reducer (602), and a transmission mechanism (603) connected in sequence; The transmission mechanism (603) is connected to the stirring device (5).

2. The device according to claim 1, characterized in that The transmission mechanism (603) is a belt drive.

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