Coal sample preparation and separation device

Abstract

The utility model provides a coal sample preparation and separation device. The coal sample preparation and separation device comprises a sample preparation pipeline, a crushing mechanism, a dispersing mechanism, a screening mechanism and a separation storage mechanism, wherein the crushing mechanism, the dispersing mechanism and the screening mechanism are sequentially arranged in the sample preparation pipeline; wherein the crushing mechanism can adjust the crushing particle size of coal according to the sampling standard, and a plurality of partition plates are arranged in the partition storage mechanism and used for sub-packaging coal particles with different particle sizes. According to the technical scheme, the crushing mechanism capable of adjusting the crushing particle size and the separation and storage mechanism located at the discharge port of the sample preparation pipeline are arranged in the sample preparation pipeline, the crushing particle size of the crushing mechanism is adjusted according to different sampling standards, and meanwhile, the separation and storage mechanism with the separation plate is used for respectively storing coal particles with different particle sizes; and the coal sample preparation efficiency is effectively improved.

Description

Technical Field

[0001] This disclosure relates to the field of coal sample preparation technology, and in particular to a coal sample preparation and separation device. Background Technology

[0002] Coal sampling, also known as coal seam sampling, involves taking a small, representative sample from a coal seam according to certain specifications and requirements for analysis, testing, and identification. The purpose of coal seam sampling is to determine the coal type, coal quality characteristics and their variation patterns, and the technological properties of the coal in the mining area or coalfield by using data obtained from the chemical and physical tests of the coal sample. This is to accurately evaluate the coal quality, determine the coal processing technology characteristics and industrial utilization direction, and provide reliable coal quality data for the development and rational utilization of coal resources.

[0003] However, in actual operation, traditional coal sampling and sorting devices often require the coal blocks to be crushed due to different sampling standards. However, traditional methods can only crush coal blocks for a single function, resulting in coal blocks with a constant particle size, making it difficult to screen and sample coal with different particle sizes. In addition, when collecting coal particle samples in batches, different collection containers are required, which is also inconvenient to operate. Utility Model Content

[0004] One of the technical problems this disclosure aims to solve is: how to crush coal blocks to different degrees according to different sampling standards, and at the same time separate and collect coal particles of different sizes.

[0005] To address the aforementioned technical problems, this disclosure provides a coal sample preparation and distribution device, comprising a sample preparation pipe, a crushing mechanism, a dispersing mechanism, and a screening mechanism sequentially arranged inside the sample preparation pipe, and a separating storage mechanism located at the outlet of the sample preparation pipe; wherein, the crushing mechanism can adjust the crushed particle size of the coal according to the sampling standard, the dispersing mechanism is used to disperse the crushed coal particles inside the sample preparation pipe, the screening mechanism is used to screen out insufficiently crushed coal particles, and the separating storage mechanism is provided with multiple separating plates for distributing coal particles of different sizes.

[0006] In some embodiments, the crushing mechanism includes a first crushing roller and a second crushing roller arranged in parallel inside the sample preparation pipe, and the distance between the first crushing roller and the second crushing roller is adjustable.

[0007] In some embodiments, the first crushing roller and the second crushing roller are rotatably disposed in the first roller seat and the second roller seat located inside the sample preparation pipe, wherein an electric push rod is provided between the second roller seat and the pipe wall of the sample preparation pipe, and the electric push rod can drive the second crushing roller to move closer to or away from the first crushing roller through the second roller seat.

[0008] In some embodiments, the crushing mechanism further includes a drive motor mounted on the wall of the sample preparation pipe for driving the first crushing roller and the second crushing roller to rotate.

[0009] In some embodiments, the dispersion mechanism includes a dispersion spindle rotatably mounted inside the sample preparation pipe, the dispersion spindle being perpendicular to the axial direction of the sample preparation pipe, and a plurality of dispersion rods distributed along the length of the dispersion spindle.

[0010] In some embodiments, a first pulley is provided on the dispersing spindle, and a second pulley is provided on the output shaft of the drive motor. The first pulley and the second pulley are connected by a transmission belt.

[0011] In some embodiments, the partitioned storage mechanism includes a rectangular storage frame, with a plurality of partitions arranged parallel to each other at different positions along a first direction, and the partitions slidably disposed inside the rectangular storage frame along a second direction, wherein the first direction and the second direction are perpendicular to each other.

[0012] In some embodiments, the partition plate is provided with two push rods arranged sequentially along a first direction. The first ends of the two push rods are respectively provided with a push block, and the second ends of the two push rods are respectively provided with a locking block. The push rods are each provided with a first spring connected to the partition plate. In the initial state of the first spring, the two locking blocks on one partition plate are respectively pressed against the two inner wall surfaces opposite to each other of the rectangular storage frame to fix the relative position of the partition plate in the rectangular storage frame.

[0013] In some embodiments, the screening mechanism includes a screen installed at the outlet end of the sample preparation pipeline.

[0014] In some embodiments, the screening mechanism further includes a vibrating screen housing connected to the screen mesh, and the vibrating screen housing is provided with a vibrating motor capable of driving the screen mesh to vibrate relative to the vibrating screen housing.

[0015] Through the above technical solution, the coal sample preparation and separation device provided in this disclosure effectively improves the efficiency of coal sample preparation by setting an adjustable crushing mechanism with an adjustable crushing particle size inside the sample preparation pipeline and a separation and storage mechanism located at the discharge port of the sample preparation pipeline. The crushing particle size of the crushing mechanism is adjusted according to different sampling standards, and the separation and storage mechanism with a separator plate is used to store coal particles of different sizes separately. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the coal sample preparation and separation device disclosed in this embodiment;

[0018] Figure 2 This is a cross-sectional schematic diagram of the coal sample preparation and separation device disclosed in this embodiment;

[0019] Figure 3 This is a partial cross-sectional schematic diagram of the crushing mechanism disclosed in an embodiment of this disclosure;

[0020] Figure 4 This is a schematic diagram of the structure of the screen and screen frame disclosed in the embodiments of this disclosure;

[0021] Figure 5 This is a schematic diagram of the structure of the partition plate disclosed in this embodiment;

[0022] Figure 6 This is a cross-sectional schematic diagram of the partitioned storage mechanism disclosed in an embodiment of this disclosure;

[0023] Figure 7 yes Figure 2 An enlarged schematic diagram of section A shown in the figure;

[0024] Figure 8 yes Figure 2 An enlarged schematic diagram of section B shown in the figure;

[0025] Figure 9 yes Figure 6 The diagram shows an enlarged view of section C.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Sample preparation pipeline; 101. First roller seat; 102. Second roller seat; 103. Electric push rod; 104. Feeding section; 105. Conveying section; 106. Discharge section; 107. Roller seat guide rail; 2. Crushing mechanism; 201. First crushing roller; 202. Second crushing roller; 203. Drive motor; 204. First rotating shaft; 205. Second rotating shaft; 206. Mounting block; 3. Dispersion mechanism; 301. Dispersion main shaft; 302. Dispersion rod; 303. First pulley; 304. Second pulley; 305. Transmission belt; 4. Screening mechanism; 401. Screen; 402. Vibrating screen housing; 403. Vibrating motor; 404. Screen frame; 405. Guide rod; 406. Second spring; 5. Separating and storage mechanism; 501. Separating plate; 502. Rectangular storage frame; 503. Push rod; 504. Push block; 505. Locking block; 506. First spring; 507. Sliding block; 508. Locking strip; 6. Base; 601. Slide groove; 602. Fixing plate. Detailed Implementation

[0028] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0029] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0030] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0032] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0033] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0034] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0035] like Figures 1 to 9 As shown, this disclosure provides a coal sample preparation and separation device, including a sample preparation pipe 1, a crushing mechanism 2, a dispersing mechanism 3, and a screening mechanism 4 sequentially arranged inside the sample preparation pipe 1, and a separation and storage mechanism 5 arranged at the outlet of the sample preparation pipe 1; wherein, the crushing mechanism 2 can adjust the crushed particle size of the coal according to the sampling standard, the dispersing mechanism 3 is used to disperse the crushed coal particles inside the sample preparation pipe 1, the screening mechanism 4 is used to screen out the insufficiently crushed coal particles, and the separation and storage mechanism 5 is provided with multiple partition plates 501 for separating coal particles of different sizes.

[0036] Specifically, to facilitate the sequential passage of coal through the crushing mechanism 2, dispersing mechanism 3, and screening mechanism 4, the sampling pipe 1 is typically placed vertically. The opening of the separating storage mechanism 5 faces the outlet of the sampling pipe 1. The coal falls freely within the sampling pipe 1, undergoing crushing, dispersing, and screening sequentially, before being discharged through the outlet of the sampling pipe 1 and falling into the separating storage mechanism 5. Operators can adjust the crushing degree of the crushing mechanism 2 according to different sampling standards. When the particle size of the crushed coal changes, the overall position of the separating storage mechanism 5 or the position of a specific partition plate 501 within it can be adjusted to separate coal particles of different sizes for easier storage. The crushing mechanism 2 can be a common crushing device capable of adjusting the particle size of the material, such as a hammer crusher, a double-roll crusher, or a cone crusher, depending on actual needs. In other embodiments, the sampling pipe 1 can also be placed at a certain angle.

[0037] like Figure 2 As shown, in some embodiments, when the sample preparation pipe 1 is placed vertically, it is divided into a feeding section 104, a conveying section 105, and a discharging section 106 from top to bottom. The upper opening area of ​​the feeding section 104 is larger than its lower opening area, which facilitates the workers to pour coal into the sample preparation pipe 1. The diameter of the conveying section 105 along the axial direction of the sample preparation pipe 1 remains unchanged. The lower opening area of ​​the discharging section 106 is smaller than its upper opening area, which facilitates the separation and storage mechanism 5 to collect coal particles.

[0038] In some embodiments, the device further includes a base 6, on which two vertically and parallelly placed fixing plates 602 are disposed, the sample preparation pipe 1 is vertically placed and fixed between the two fixing plates 602, and the partition storage mechanism 5 is placed on the bottom plate of the base 6.

[0039] like Figure 2 and Figure 3 As shown, in some embodiments, the crushing mechanism 2 includes a first crushing roller 201 and a second crushing roller 202 arranged parallel to each other inside the sample preparation pipe 1, and the distance between the first crushing roller 201 and the second crushing roller 202 is adjustable.

[0040] Specifically, the first crushing roller 201 and the second crushing roller 202 are placed upstream of the conveying section 105, perpendicular to the axial direction of the sample preparation pipe 1. Uncrushed coal entering from the feeding section 104 falls downward into the conveying section 105, where it is crushed by the first crushing roller 201 and the second crushing roller 202 and then dispersed and screened downwards before finally entering the separating storage mechanism 5. The distance between the two crushing rollers can be adjusted by hydraulic adjustment, bolt adjustment, or manual adjustment to accommodate different sampling standards.

[0041] like Figure 3 As shown, in some embodiments, the first crushing roller 201 and the second crushing roller 202 are rotatably disposed in the first roller seat 101 and the second roller seat 102 located inside the sample preparation pipe 1. An electric push rod 103 is provided between the second roller seat 102 and the pipe wall of the sample preparation pipe 1. The electric push rod 103 can drive the second crushing roller 202 to approach or move away from the first crushing roller through the second roller seat 102.

[0042] Specifically, the first roller seat 101 is provided with a receiving cavity that can partially accommodate the first crushing roller 201, and the second roller seat 102 is also provided with a receiving cavity that can partially accommodate the second crushing roller 202. The portions of the first crushing roller 201 and the second crushing roller 202 that extend beyond the receiving cavities can work together to crush the material. In addition, the first roller seat 101 is fixedly installed on the inner wall of the first side of the sample preparation pipeline 1 conveying section 105, and the second roller seat 102 is movably installed on the inner wall of the opposite side of the sample preparation pipeline 1 conveying section 105. The inner wall of the second side is provided with a roller seat guide rail 107 for the second roller seat 102 to move. One end of the electric push rod 103 is fixed to the inner wall of the second side, and the other end is fixed to the second roller seat 102, pushing the second roller seat 102 to move along the roller seat guide rail 107, so that the second crushing roller 202 can move closer to or further away from the first crushing roller 201 to change the degree of crushing of the coal by the crushing mechanism 2. To save internal space in the sample preparation pipe 1, the electric push rod 103 penetrates the pipe wall of the sample preparation pipe 1, with the push rod portion located inside the sample preparation pipe 1 and the motor portion located outside the sample preparation pipe 1. In other embodiments, the first roller seat 101 can also be movably installed on the inner wall of the sample preparation pipe 1, allowing for faster adjustment of the distance between the two crushing rollers.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the crushing mechanism 2 further includes a drive motor 203 installed on the wall of the sample preparation pipe 1 for driving the first crushing roller 201 and the second crushing roller 202 to rotate.

[0044] Specifically, a mounting block 206 is fixed on the outer wall of the sample preparation pipe 1. The mounting block 206 mounts the drive motor 203 to the outer wall of the sample preparation pipe 1. Simultaneously, the output shaft of the drive motor 203 passes through the pipe wall of the sample preparation pipe 1 and is connected to the first crushing roller 201 and the second crushing roller 202, driving the two crushing rollers to rotate and crush the coal. Figure 2 and Figure 3 As shown, a first rotating shaft 204 and a second rotating shaft 205 are provided at the rotation center of the first crushing roller 201 and the second crushing roller 202. The drive motor 203 indirectly drives the first crushing roller 201 and the second crushing roller 202 to rotate by driving the first rotating shaft 204 and the second rotating shaft 205 to crush the coal. In other embodiments, to reduce the complexity of the transmission structure, two drive motors 203 can be installed on the pipe wall of the sample preparation pipe 1 to drive the first rotating shaft 204 and the second rotating shaft 205 respectively.

[0045] like Figure 2 and Figure 7As shown, in some embodiments, the dispersion mechanism 3 includes a dispersion main shaft 301 rotatably mounted inside the sample preparation pipe 1. The dispersion main shaft 301 is perpendicular to the axial direction of the sample preparation pipe 1, and a plurality of dispersion rods 302 are distributed on the dispersion main shaft 301 along its length direction.

[0046] Specifically, the dispersing mechanism 3 is installed downstream of the conveying section 105 of the sample preparation pipeline 1 to disperse the coal particles crushed by the crushing mechanism 2, thereby improving the subsequent screening efficiency. The two ends of the dispersing main shaft 301 are rotatably mounted on opposite side walls of the sample preparation pipeline 1. One end of the dispersing rod 302 is connected to the dispersing main shaft 301, and the rod extends radially outward along the dispersing main shaft 301. A motor for driving the dispersing main shaft 301 can be installed on the pipe wall of the sample preparation pipeline 1. The rotation of the dispersing main shaft 301 drives multiple dispersing rods 302 to agitate the coal particles, dispersing them inside the sample preparation pipeline 1 for easier subsequent screening. In other embodiments, to improve dispersion efficiency, the dispersing rod 302 can be replaced with dispersing blades with inclined curved surfaces or other stirring structures that can enhance the dispersion effect.

[0047] like Figure 2 and Figure 7 As shown, in some embodiments, a first pulley 303 is provided on the dispersing main shaft 301, a second pulley 304 is provided on the output shaft of the drive motor 203, and a transmission belt 305 is provided between the first pulley 303 and the second pulley 304; when the crushing mechanism 2 is crushing coal, the dispersing main shaft 301 can rotate under the transmission action of the transmission belt 305 to drive multiple dispersing rods 302 to disperse the crushed coal particles.

[0048] Specifically, when the crushing mechanism 2 starts working, the drive motor 203, through the transmission action of the first pulley 303, the second pulley 304, and the transmission belt 305, drives the two crushing rollers to crush the coal, and simultaneously drives the dispersing main shaft 301 to rotate. This allows the dispersing mechanism 3 to work in coordination with the crushing mechanism 2, reducing equipment costs and effectively improving equipment operating efficiency. In other embodiments, the second pulley 304 can also be fixedly installed on the first rotating shaft 204 or the second rotating shaft 205.

[0049] like Figure 1 and Figure 2 As shown, in some embodiments, the partitioned storage mechanism 5 includes a rectangular storage frame 502, a plurality of partition plates 501 are arranged parallel to each other at different positions of the rectangular storage frame 502 along a first direction, and the partition plates 501 are slidably disposed inside the rectangular storage frame 502 along a second direction, wherein the first direction and the second direction are perpendicular to each other.

[0050] Specifically, the opening of the rectangular storage frame 502 faces the outlet of the sample preparation pipe 1, and multiple partitions 501 can divide the rectangular storage frame 502 into different storage areas. Typically, the opening area of ​​the rectangular storage frame 502 is larger than the outlet area of ​​the sample preparation pipe 1. After collecting a batch of coal particles, the operator can push a suitable partition 501 to slide in the second direction to move this batch of coal particles away from the outlet of the sample preparation pipe 1. This process is repeated to complete the separation and storage of different batches of coal particles. Guide rails for the partitions 501 to slide and retractable stops for limiting the position of the partitions 501 can be provided on the side wall of the rectangular storage frame 502.

[0051] In some embodiments, a chute 601 may be provided on the bottom plate of the base 6, and a slider 507 that can cooperate with the chute 601 is provided at the bottom of the rectangular storage frame 502. The operator can adjust the position of the rectangular storage frame 502 and the separator 501 at the same time to receive coal particles of different sizes in batches, so as to achieve more flexible operation.

[0052] like Figure 5 , Figure 6 and Figure 9 As shown, in some embodiments, the partition plate 501 is provided with two push rods 503 arranged sequentially along a first direction. The first ends of the two push rods 503 are respectively provided with a push block 504, and the second ends of the two push rods 503 are respectively provided with a locking block 505. The rods of the two push rods 503 are each provided with a first spring 506 connected to the partition plate 501. In the initial state of the first spring 506, the two locking blocks 505 on one partition plate 501 are respectively pressed against the two opposite inner wall surfaces of the rectangular storage frame 502 to fix the relative position of the partition plate 501 within the rectangular storage frame 502.

[0053] Specifically, in the initial state of the first spring 506, the partition plate 501 is secured between the two opposing inner walls of the rectangular storage frame 502 by two locking blocks 505, ensuring its relative position with the rectangular storage frame 502. When the position of the partition plate 501 needs to be adjusted, the operator pushes the two push blocks 504 closer together, and the locking blocks 505 located at the second ends of the two push rods 503 move inward, releasing the lock between them and the inner wall surfaces. The partition plate 501 can then move relative to the rectangular storage frame 502 in the second direction, while the first spring 506 is compressed or stretched. After the partition plate 501 has moved, the operator releases the two push blocks 504, and the first spring 506 returns to its initial state, causing the two locking blocks 505 to press firmly against the opposing inner wall surfaces of the rectangular storage frame 502 again, maintaining the fixed relative position of the partition plate 501 and the rectangular storage frame 502. A damping surface layer composed of rubber or fiber material can be provided on the side of the locking block 505 near the inner wall surface of the rectangular storage frame 502, which helps to improve the friction between the two.

[0054] In some embodiments, the top of the partition plate 501 is provided with an inverted U-shaped clip 508. The clip 508 is arranged along a first direction and its two ends along the first direction are respectively attached to the outer surface of the side wall of the rectangular storage frame 502. Two clips 505 cooperate with the clip 508 to improve the stability of the partition plate 501 when it is relatively fixed and relatively sliding.

[0055] like Figure 2 , Figure 4 and Figure 8 As shown, in some embodiments, the screening mechanism 4 includes a screen 401 installed at the outlet end of the sample preparation pipe 1.

[0056] Specifically, the screen 401 is installed at the lowest end of the discharge section 106 of the sample preparation pipe 1 to screen the crushed and dispersed coal particles, intercepting coal particles that do not meet the particle size requirements and preventing them from entering the separation and storage mechanism 5. In some embodiments, the screen 401 is detachably installed on the pipe wall of the sample preparation pipe 1 along the circumference of the screen frame 404, which facilitates the cleaning of large coal particles by the staff or the replacement of the screen 401 as needed.

[0057] like Figure 2 , Figure 4 and Figure 8 As shown, in some embodiments, the screening mechanism 4 further includes a vibrating screen housing 402 connected to the screen 401, and the vibrating screen housing 402 is provided with a vibrating motor 403 capable of driving the screen 401 to vibrate relative to the vibrating screen housing 402.

[0058] Specifically, the screen frame 404 connected to the screen 401 is installed in the cavity inside the vibrating screen housing 402. The vibrating motor 403 drives the screen frame 404 to vibrate relative to the vibrating screen housing 402, thereby driving the screen 401 to vibrate and enhancing the working efficiency of the screening mechanism 4.

[0059] In some embodiments, a guide rod 405 and a second spring 406 sleeved on the guide rod 405 are provided inside the vibrating screen housing 402. The screen frame 404 is also movably sleeved on the guide rod 405. The vibrating motor 403 and the second spring 406 work together to drive the screen frame 404 to vibrate back and forth along the guide rod 405. In order to improve the screening efficiency, the guide rod 405 is placed in the vertical direction. In other embodiments, the guide rod 405 may also be placed in other directions.

[0060] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0061] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

Claims

1. A coal sample preparation and separation device, characterized in that, It includes a sample preparation pipe (1), a crushing mechanism (2), a dispersing mechanism (3) and a sieving mechanism (4) arranged sequentially inside the sample preparation pipe (1), and a separation and storage mechanism (5) arranged at the outlet of the sample preparation pipe (1). The crushing mechanism (2) can adjust the crushed particle size of coal according to the sampling standard. The dispersing mechanism (3) is used to disperse the crushed coal particles inside the sample preparation pipe (1). The screening mechanism (4) is used to screen out the insufficiently crushed coal particles. The partition storage mechanism (5) is equipped with multiple partition plates (501) for dispensing coal particles of different sizes.

2. The coal sample preparation and separation device according to claim 1, characterized in that, The crushing mechanism (2) includes a first crushing roller (201) and a second crushing roller (202) arranged in parallel inside the sample preparation pipe (1), and the distance between the first crushing roller (201) and the second crushing roller (202) is adjustable.

3. The coal sample preparation and separation device according to claim 2, characterized in that, The first crushing roller (201) and the second crushing roller (202) are rotatably disposed on the first roller seat (101) and the second roller seat (102) located inside the sample preparation pipe (1). An electric push rod (103) is provided between the second roller seat (102) and the pipe wall of the sample preparation pipe (1). The electric push rod (103) can drive the second crushing roller (202) to move closer to or away from the first crushing roller (201) through the second roller seat (102).

4. The coal sample preparation and separation device according to claim 2, characterized in that, The crushing mechanism (2) further includes a drive motor (203) installed on the wall of the sample preparation pipe (1) for driving the first crushing roller (201) and the second crushing roller (202) to rotate.

5. The coal sample preparation and separation device according to claim 4, characterized in that, The dispersion mechanism (3) includes a dispersion spindle (301) rotatably mounted inside the sample preparation pipe (1). The dispersion spindle (301) is perpendicular to the axial direction of the sample preparation pipe (1), and a plurality of dispersion rods (302) are distributed along its length on the dispersion spindle (301).

6. The coal sample preparation and separation device according to claim 5, characterized in that, The dispersing spindle (301) is provided with a first pulley (303), and the output shaft of the drive motor (203) is provided with a second pulley (304). The first pulley (303) and the second pulley (304) are connected by a transmission belt (305).

7. The coal sample preparation and separation device according to claim 1, characterized in that, The partitioned storage mechanism (5) includes a rectangular storage frame (502), and a plurality of partition plates (501) are arranged parallel to each other at different positions of the rectangular storage frame (502) along a first direction. The partition plates (501) are slidably disposed inside the rectangular storage frame (502) along a second direction, wherein the first direction and the second direction are perpendicular to each other.

8. The coal sample preparation and separation device according to claim 7, characterized in that, The partition plate (501) is provided with two push rods (503) arranged sequentially along the first direction. Each of the two push rods (503) has a push block (504) at its first opposite end and a locking block (505) at its second end. Each of the two push rods (503) has a first spring (506) connected to the partition plate (501). In the initial state of the first spring (506), two locking blocks (505) on one of the partition plates (501) are respectively pressed against two opposite inner wall surfaces of the rectangular storage frame (502) to fix the relative position of the partition plate (501) within the rectangular storage frame (502).

9. The coal sample preparation and separation device according to claim 1, characterized in that, The screening mechanism (4) includes a screen (401) installed at the outlet end of the sample preparation pipe (1).

10. The coal sample preparation and separation device according to claim 9, characterized in that, The screening mechanism (4) further includes a vibrating screen shell (402) connected to the screen (401), and the vibrating screen shell (402) is provided with a vibrating motor (403) capable of driving the screen (401) to vibrate relative to the vibrating screen shell (402).

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