Coal sample preparation device

Abstract

The present application provides a kind of coal sample preparation device, comprising: bearing rod, rotating component for driving bearing rod to rotate in vertical plane, two blending discs rotatingly arranged at both ends of bearing rod, locking component arranged at the bottom of blending disc and hopper;Wherein, blending disc can rotate relative to the end of bearing rod under the action of gravity;The inside of the blending disc is provided with a cross partition, which separates the blending disc into four compartments, and each compartment has a bottom plate at the bottom;Locking component is used to prevent the bottom plate from opening the corresponding compartment;Hopper is used to receive the material falling from the blending disc and deliver the material to the blending disc below it.The present application drives two blending discs to alternately replace each other by rotating the bearing rod, delivers the coal sample above to the blending disc below through the hopper, and performs rapid blending of raw coal sample, which greatly reduces the labor intensity of workers, and the sample separation speed is high, and the efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of coal sampling technology, and more specifically to a coal sample preparation device. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] The original coal sample needs to be prepared to meet the laboratory requirements for weight and particle size before it can be submitted for testing. The prepared coal sample must maintain the representativeness of the original coal sample; therefore, coal sample preparation should be carried out according to the national standard GB474-83 "Methods for Coal Sample Preparation". Coal sample preparation can be divided into four steps: crushing, sieving, blending, and reduction. Crushing can be done mechanically or manually. The sieved coal sample needs to be blended three times. The blending method involves using a flat iron shovel to pile the coal sample into a cone shape, ensuring each shovelful flows evenly from the top of the cone. The uniformly blended coal sample is then reduced to its required particle size and weight using a cross-shaped sample divider and a quartering method.

[0004] However, in practice, when workers collect raw coal samples, they first take out a large number of coal chunks (ranging from tens of kilograms to hundreds of kilograms) from various sampling points in the coal pile. These raw coal samples are too large, and if they are all sent for coal sample preparation, the workload of coal sample preparation would be too great. Therefore, while ensuring the accuracy of the samples, the staff will perform the blending and reduction steps in the above national standard to reduce the size of the raw coal samples before sending them for coal sample preparation.

[0005] However, due to the large volume of the original coal sample, the manual blending and reduction process is labor-intensive and time-consuming. Therefore, a coal sample preparation device is proposed to save on the initial workload. Summary of the Invention

[0006] The main objective of this invention is to provide a coal sample preparation device that can save the workload of blending and reducing the original coal sample in the early stages.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: a coal sample preparation apparatus, comprising:

[0008] Load-bearing rod;

[0009] A rotating component, connected to the middle of the bearing rod, is used to drive the bearing rod to rotate in a vertical plane;

[0010] Two mixing discs are rotatably mounted at both ends of a support rod via a connecting part. The center of gravity of the mixing disc is located below the rotation center of the mixing disc. The mixing disc can rotate relative to the end of the support rod under the action of gravity. A cross-shaped partition is provided inside the mixing disc, which divides the mixing disc into four compartments. The bottom of each compartment has a bottom plate that can be opened and closed.

[0011] A locking component, located at the bottom of the mixing tray, is used to prevent the bottom plate from opening the corresponding compartment and to release the limiting position on each bottom plate; and

[0012] The hopper, located at the center of rotation of the support rod and not rotating with the support rod, is used to receive the material falling from the mixing plate that moves above the hopper and to transport the material to the cross intersection of the cross partitions located in the mixing plate below it.

[0013] Furthermore, a column is provided at the intersection of the cross-shaped partition, the top of the column is conical, and the outlet of the hopper is located directly above the column.

[0014] Furthermore, each base plate is rotatably connected to the side wall of the mixing disc at a position relative to the side wall of the mixing disc. The column has an internal receiving cavity, and a winding component is provided in the receiving cavity. The winding component is provided with the same number of winding lines as each base plate. One end of each winding line is connected to the winding component, and the other end is connected to the corresponding base plate. The winding component can wind up each winding line, causing the corresponding base plate to rotate upward and close the bottom of the corresponding compartment.

[0015] Furthermore, the winding component includes the same number of winding reels as each base plate, with each winding reel distributed vertically and coaxially within the receiving cavity. One end of the corresponding winding line is wound around the corresponding winding reel, and the other end passes through the column and connects to the corresponding base plate.

[0016] The cavity is also equipped with a rotating unit, the output end of which is connected to an output shaft, which is used to drive each take-up reel to rotate.

[0017] Furthermore, the output shaft passes through the rotation center of each take-up reel, and a limit component is provided on the output shaft for limiting and releasing the limit between each take-up reel and the output shaft; after the take-up reel is released from the limit, the take-up reel can rotate relative to the output shaft, and when the locking component of the mixing reel in the unloaded state releases the limit of the corresponding base plate, the base plate can rotate downward under the action of gravity and pull the take-up line, thereby driving the corresponding unlimited take-up reel to rotate.

[0018] Furthermore, the take-up reels are arranged in pairs, one above the other. The take-up lines corresponding to the two take-up reels in each pair are connected to the two bottom plates opposite each other in the mixing tray. Each group of take-up reels corresponds to a limiting component. The limiting component includes a slide rail opened in the output shaft, a slide rod slidably arranged in the slide rail, multiple through holes opened on the side wall of the output shaft and penetrating the slide rail, and a limiting block slidably arranged in each through hole. The through holes are distributed at the positions of the corresponding take-up reels on the output shaft. The take-up reels are provided with limiting grooves corresponding to the positions of the through holes. One end of the limiting block can extend out of the through hole and enter the limiting groove. A first elastic element is provided between the limiting block and the side wall of the output shaft. The first elastic element is used to push the end of the limiting block out of the limiting groove.

[0019] A ramp is provided at the position of the sliding rod corresponding to the limiting block. The ramp is used to abut against one end of the limiting block. A second elastic element is provided between the sliding rod and the slide rail. The second elastic element is used to push the sliding rod to abut against the limiting block, so that the limiting block moves in the through hole toward the winding reel and overcomes the elastic force of the first elastic element until the end of the limiting block extends out of the through hole and enters the limiting groove.

[0020] It also includes a moving element, which drives the slide bar to slide within the slide, so that the inclined block releases its contact with the limiting block.

[0021] Furthermore, the moving element includes a first magnetic element disposed at the end of the slide bar and a first electromagnet disposed within the output shaft. The first electromagnet is capable of generating magnetic force to repel the first magnetic element and push the slide bar to squeeze the second elastic element, thereby separating the inclined block from the limiting block.

[0022] Furthermore, the limiting block includes an independent abutting part and a limiting part, and a third elastic element is provided between the abutting part and the limiting part. The abutting part is used to abut and cooperate with the inclined block. One end of the limiting part has an arc surface or an inclined surface, which is used to extend out of the through hole and enter the limiting groove to limit the limiting groove. After the winding reel winds the winding line into place, it reverses and squeezes the limiting part to make the limiting part exit the limiting groove.

[0023] Furthermore, the first magnetic components at the ends of the two slide bars corresponding to the two sets of winding reels are arranged opposite each other, and the opposite sides have the same magnetism. The first electromagnet is located between the two slide bars, and the magnetic pole of the first electromagnet faces the corresponding first magnetic component.

[0024] Furthermore, a non-circular slot is provided at the end of the output shaft, and an insertion component is provided at the bottom of the column for inserting into the slot to restrict the rotation of the output shaft.

[0025] The beneficial effects of this invention are reflected in:

[0026] This invention utilizes the rotation of a support rod to rotate two blending discs, alternating their positions. When the blending disc containing the original coal sample is at the top, the bottom plate is opened, allowing the coal sample to be transported through a hopper to the cross-shaped intersection within the lower blending disc, thus forming a conical pile. This method enables rapid blending of the original coal sample. The cross-shaped partition in the blending disc acts as a cross-shaped sample dividing plate. Since the coal sample is transported through the hopper to the cross-shaped intersection within the blending disc, the cross-shaped partition hardly affects the normal blending of the coal sample. Furthermore, it eliminates the need for a separate cross-shaped sample dividing plate for subsequent sample division, significantly reducing the labor intensity of workers and resulting in fast and efficient sample division. Attached Figure Description

[0027] In the attached diagram:

[0028] Figure 1 This is a three-dimensional structural diagram of the coal sample preparation device described in this invention;

[0029] Figure 2 This is a schematic diagram of the structure of the bearing rod rotating to a vertical state as described in this invention;

[0030] Figure 3 This is a half-section structural schematic diagram of the coal sample preparation device described in this invention;

[0031] Figure 4 This is a schematic diagram of the structure of the bottom of the mixing disk described in this invention;

[0032] Figure 5 This is a half-sectional view of the mixing disk described in this invention;

[0033] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0034] Figure 7 for Figure 6 Enlarged view at point B;

[0035] Figure 8 This is a half-sectional view of the locking component described in this invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Bearing rod; 11. Rotating sleeve; 12. Gear ring;

[0038] 2. Rotating parts; 21. Gears;

[0039] 3. Mixing disc; 31. Cross partition; 32. Base plate; 33. Column; 331. Roller; 34. Rewinding reel; 341. Limiting groove; 35. Rewinding wire; 36. Rotating unit; 361. Output shaft; 362. Slot; 363. Electric slip ring;

[0040] 4. Locking component; 41. Fixing block; 42. Locking block; 43. Telescopic component; 44. Fifth elastic element;

[0041] 5. Hopper;

[0042] 6. Limiting component; 61. Slide rail; 62. Slide rod; 621. Inclined block; 63. Through hole; 64. Limiting block; 641. Abutting part; 642. Limiting part; 643. Third elastic element; 65. First elastic element; 66. Second elastic element; 67. Moving element; 671. First magnetic element; 672. First electromagnet;

[0043] 7. Insertion component; 71. Movable cavity; 72. Insertion block; 73. Second magnetic component; 74. Second electromagnet; 75. Fourth elastic component;

[0044] 8. Base;

[0045] 9. Upright board; 91. Fixing rod. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the invention, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0047] See Figures 1 to 8 .

[0048] This invention discloses a coal sample preparation apparatus, comprising:

[0049] Support rod 1;

[0050] Rotating component 2 is connected to the middle of bearing rod 1 and is used to drive bearing rod 1 to rotate up and down in a vertical plane;

[0051] Two mixing discs 3 are rotatably mounted at both ends of the support rod 1 via a connecting part. The center of gravity of the mixing disc 3 is located below the rotation center of the mixing disc 3. The mixing disc 3 can rotate relative to the end of the support rod 1 under the action of gravity, ensuring that the mixing disc 3 is always installed on the support rod 1 with its opening facing upward. The mixing disc 3 has a cross partition 31 inside, which divides the mixing disc 3 into four compartments. The bottom of each compartment has a bottom plate 32 that can open and close the compartment.

[0052] A locking component 4, located at the bottom of the mixing plate 3, is used to prevent the bottom plate 32 from opening the corresponding compartment and to release the limiting effect on each bottom plate 32; and

[0053] The hopper 5 is located at the rotation center of the bearing rod 1 and does not rotate with the bearing rod 1. It is used to receive the material falling from the mixing plate 3 that moves to the top of the hopper 5 and to transport the material to the cross intersection of the cross partition 31 located in the mixing plate 3 below it.

[0054] In practice, the staff pours the collected raw coal sample into one of the blending pans 3, then rotates the bearing rod 1 to a vertical position, so that the blending pan 3 with the raw coal sample is on top, and the other empty blending pan 3 is on the bottom. Then, the locking component 4 on the upper blending pan 3 releases the restriction on each bottom plate 32, and the raw coal sample in the upper blending pan 3 falls into the hopper 5, and is transported through the hopper 5 to the cross-shaped intersection in the lower blending pan 3, so that the coal sample is piled into a cone shape. This completes one batch of material blending. Afterwards, the bottom plate 32 is closed (manually). (Move) and reposition the locking component 4 to limit each bottom plate 32; after the bearing rod 1 rotates 180°, repeat the above operation again. After multiple mixing, the material is mixed evenly. Then, move the mixing tray 3 with the coal sample to the bottom, and then open the two opposite bottom plates 32 in the mixing tray 3 to discharge the coal sample in the two compartments to the outside. This completes one mixing and reduction of the original coal sample. Repeat the above mixing and reduction process several times until the original coal sample reaches the predetermined volume, and then it can be sent for coal sample preparation according to national standards.

[0055] In this invention, the rotation of the bearing rod 1 drives the two blending discs 3 to alternate up and down. When the blending disc 3 containing the original coal sample is on top, the bottom plate 32 is opened to transport the coal sample through the hopper 5 to the cross intersection in the lower blending disc 3, and the coal sample is piled into a cone shape. This method enables rapid blending of the original coal sample. The cross partition 31 in the blending disc 3 is equivalent to a cross-shaped sample dividing plate. Since the coal sample is transported to the cross intersection in the blending disc 3 through the hopper 5, the setting of the cross partition 31 hardly affects the normal blending of the coal sample, and can save the step of using a cross-shaped sample dividing plate for sample dividing later, which greatly reduces the labor intensity of workers and makes the sample dividing speed fast and efficient.

[0056] In one embodiment, a column 33 is provided at the intersection of the cross-shaped partition 31. The top of the column 33 is conical, and the outlet of the hopper 5 is located directly above the column 33. This design is more conducive to evenly distributing the original coal sample delivered by the hopper 5 in the four compartments, reducing the number of times the original coal sample is mixed.

[0057] In one embodiment, each base plate 32 is rotatably connected to the side wall of the mixing tray 3 via hinges at its position relative to the side wall of the mixing tray 3. The column 33 has an internal receiving cavity containing a winding component. This winding component has the same number of winding lines 35 as each base plate 32. One end of each winding line 35 is connected to the winding component, and the other end is connected to the corresponding base plate 32. The winding component can wind up each winding line 35, causing the corresponding base plate 32 to rotate upwards and close the bottom of the corresponding compartment. This design enables the base plates 32 to close automatically.

[0058] It should be noted that the mixing disk 3 can be circular, rectangular, or other polygonal shapes, and the base plate 32 can also be fan-shaped, rectangular, or other polygonal shapes.

[0059] In one embodiment, the winding component includes the same number of winding reels 34 as each base plate 32. Each winding reel 34 is distributed vertically and coaxially within the receiving cavity. One end of the corresponding winding line 35 is wound around the corresponding winding reel 34, and the other end passes through the column 33 and connects to the corresponding base plate 32.

[0060] The cavity is also equipped with a rotating unit 36, the output end of which is connected to an output shaft 361, which is used to drive each winding reel 34 to rotate.

[0061] Preferably, the rotating unit 36 ​​is a motor.

[0062] Preferably, a roller 331 is provided at the position of the take-up line 35 on the column 33 to reduce the friction of the take-up line 35 during the winding and unwinding process.

[0063] In one embodiment, the output shaft 361 passes through the rotation center of each take-up reel 34. A limit component 6 is provided on the output shaft 361 to limit and release the connection between each take-up reel 34 and the output shaft 361. After the take-up reel 34 is released from the limit, it can rotate relative to the output shaft 361. Furthermore, when the locking component 4 of the mixing reel 3 in an unloaded state releases the limit on the corresponding base plate 32, the base plate 32 can rotate downwards under gravity and pull the take-up line 35, causing the corresponding released take-up reel 34 to rotate. With this design, when it is necessary to open two or all of the base plates 32, only the limits on the base plates 32 and the take-up reels 34 need to be released, and the base plates 32 will open automatically. This achieves automatic opening and closing of the base plates 32, resulting in a high degree of automation.

[0064] In one embodiment, the take-up reels 34 are arranged in pairs, one above the other. The take-up lines 35 corresponding to the two take-up reels 34 in each pair are connected to the two opposing bottom plates 32 in the mixing plate 3. Each pair of take-up reels 34 corresponds to a limiting component 6. The limiting component 6 includes a slide rail 61 opened in the output shaft 361, a slide rod 62 slidably disposed in the slide rail 61, a plurality of through holes 63 opened on the side wall of the output shaft 361 and penetrating through the slide rail 61, and a sliding rod 62 slidably disposed in each through hole. The limiting block 64 in the hole 63 is distributed at the position of the corresponding winding reel 34 of the output shaft 361. The winding reel 34 is provided with a limiting groove 341 corresponding to the position of the hole 63. One end of the limiting block 64 can extend out of the hole 63 and enter the limiting groove 341. A first elastic member 65 is provided between the limiting block 64 and the side wall of the output shaft 361. The first elastic member 65 is used to push the end of the limiting block 64 out of the limiting groove 341.

[0065] The slide bar 62 is provided with a ramp 621 at the position corresponding to the limiting block 64. The ramp 621 is used to abut against one end of the limiting block 64. A second elastic member 66 is provided between the slide bar 62 and the slide rail 61. The second elastic member 66 is used to push the slide bar 62 to abut against the limiting block 64, so that the limiting block 64 moves in the direction of the winding reel 34 within the through hole 63 and overcomes the elastic force of the first elastic member 65 until the end of the limiting block 64 extends out of the through hole 63 and enters the limiting groove 341 and remains in that position for a long time.

[0066] It also includes a moving element 67, which drives the slide bar 62 to slide within the slide rail 61, so that the inclined block 621 releases its contact with the limiting block 64.

[0067] In practice, under normal circumstances, the second elastic element 66 pushes the slide rod 62 to abut against the limiting block 64, causing the limiting block 64 to move towards the take-up reel 34 within the through hole 63 and overcome the elastic force of the first elastic element 65, until the end of the limiting block 64 extends out of the through hole 63 and enters the limiting groove 341 and remains in that position for a long time; thus, during the mixing process, the rotating unit 36 ​​can synchronously open and close each bottom plate 32 (achieved by controlling the forward and reverse rotation of the motor); while during the shrinking process, the limiting component 6 corresponding to one set of take-up reels 34 is activated, thereby releasing the corresponding two take-up reels 34. The limit is set, and then the locking component 4 releases the limit of the corresponding base plate 32. The corresponding base plate 32 rotates downward under the action of gravity and pulls the take-up line 35, which drives the corresponding take-up reel 34 that has been released from the limit to rotate and complete one shrinking. As for how to resume the winding of the take-up line 35 after the shrinking is completed, there are many methods. For example, the limit of the group of take-up reels 34 is reset, and then the limit of another group of take-up reels 34 is released. In this way, when the output shaft 361 drives the group of take-up reels 34 to rotate, it will not disturb the other group of take-up reels 34 until the winding is in place, and then all take-up reels 34 are reset to the limit.

[0068] In one embodiment, the moving element 67 can be implemented using a small electric telescopic rod, but for the output shaft 361, the small electric telescopic rod is still quite large. In order to further reduce the size of the moving element 67, this application adopts the following technical solution:

[0069] The moving element 67 includes a first magnetic element 671 disposed at the end of the slide bar 62 and a first electromagnet 672 disposed within the output shaft 361. The first electromagnet 672 can generate magnetic force to repel the first magnetic element 671 and push the slide bar 62 to squeeze the second elastic element 66, thereby separating the inclined block 621 from the limiting block 64. This design enables the moving element 67 to be miniaturized.

[0070] In one embodiment, the limiting block 64 includes independent abutting portions 641 and limiting portions 642. A third elastic element 643 is provided between the abutting portions 641 and the limiting portions 642. The abutting portion 641 is used to abut against the inclined block 621. One end of the limiting portion 642 has an arc surface or an inclined surface, which is used to extend out of the through hole 63 and enter the limiting groove 341 to limit the limiting groove 341. After the take-up reel 34 has wound the take-up line 35 into place, it reverses and squeezes the limiting portion 642, causing the limiting portion 642 to exit the limiting groove 341. With this design, since not all the base plates 32 are necessarily reset exactly after the take-up reel 34 has rotated to a specified number of revolutions, when some base plates 32 have been reset and some have not, this application can continue to allow the output shaft 361 to rotate until all the base plates 32 are reset, without worrying about the take-up reel 34 being damaged.

[0071] In one embodiment, the first magnetic elements 671 at the ends of the two slide bars 62 corresponding to the two sets of winding reels 34 are arranged opposite each other, and the opposing sides have the same magnetism. The first electromagnet 672 is located between the two slide bars 62, and the magnetic poles of the first electromagnet 672 face the corresponding first magnetic element 671. This design allows one electromagnet to drive the two slide bars 62 separately, reducing costs.

[0072] In one embodiment, the output shaft 361 has a non-circular slot 362 at its end, and the bottom of the column 33 has an insertion component 7 for inserting into the slot 362 to restrict the rotation of the output shaft 361. This design prevents the reel 34 from driving the output shaft 361 to rotate in reverse.

[0073] Specifically, a movable cavity 71 is provided at the position of the corresponding slot 362 at the bottom of the column 33. A plug 72 is slidably disposed in the movable cavity 71, and one end of the plug 72 can pass through the movable cavity 71 and be inserted into the slot 362.

[0074] The insertion block 72 has a second magnetic element 73 at one end located within the movable cavity 71. Another second electromagnet 74 is located within the movable cavity 71. A fourth elastic element 75 is positioned between the second electromagnet 74 and the second magnetic element 73 to push the second magnetic element 73 towards the slot 362. This design allows two insertion blocks 72 to be driven by a single electromagnet, resulting in a compact size.

[0075] Preferably, the first magnetic element 671 and the second magnetic element 73 can be permanent magnets, or they can be electromagnets.

[0076] Preferably, an electric slip ring 363 is provided on the output shaft 361, and external power can be connected to the first electromagnet 672 and the second electromagnet 74 through the electric slip ring 363.

[0077] In one embodiment, the locking component 4 is disposed on the fixing block 41 at the bottom of the cross partition 31. The vertical projection of the fixing block 41 does not exceed the projection of the cross partition 31. A locking block 42 is slidably disposed inside the fixing block 41. One end of the locking block 42 can extend through the fixing block 41 to the bottom of one side of the bottom plate 32. A telescopic component 43 is disposed on one side of the fixing block 41. One end of the telescopic component 43 extends into the fixing block 41 and is wedge-shaped, used to squeeze one end of the locking block 42 out of the fixing block 41. A fifth elastic member 44 is disposed inside the fixing block 41. The fifth elastic member 44 is used to push the end of the locking block 42 into the fixing block 41 to release the restriction on the floor.

[0078] Preferably, the first elastic element 65, the second elastic element 66, the third elastic element 643, the fourth elastic element 75 and the fifth elastic element 44 can be springs.

[0079] Preferably, the telescopic component 43 can be an electric telescopic component 43 or a pneumatic telescopic component 43, since both are common knowledge to those skilled in the art, so they will not be described in detail here.

[0080] In one embodiment, a base 8 is also included, on which a vertical plate 9 is provided. The rotating component 2 is disposed on the vertical plate 9, and a fixed rod 91 is provided on the vertical plate 9. A rotating sleeve 11 is provided in the middle of the bearing rod 1 and is sleeved on the fixed rod 91. A gear ring 12 is provided inside the rotating sleeve 11. The rotating component 2 has a rotating shaft that extends into the rotating sleeve 11 and has a gear 21 at its end that meshes with the gear ring 12. The rotating component 2 drives the rotating sleeve 11 to rotate by driving the gear 21 to rotate.

[0081] The hopper 5 is connected to the fixed rod 91 via a connecting block.

[0082] Preferably, the rotating component 2 is a motor.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0084] It should be noted that if the embodiments of the invention involve directional indicators (such as up and down), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0085] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B. Additionally, if the embodiments of the invention involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

Claims

1. A coal sample preparation apparatus, characterized in that, include: Support rod (1); The rotating component (2) is connected to the middle of the bearing rod (1) and is used to drive the bearing rod (1) to rotate in the vertical plane; Two mixing discs (3) are rotatably mounted at both ends of the support rod (1) via a connecting part. The center of gravity of the mixing disc (3) is located below the rotation center of the mixing disc (3). The mixing disc (3) can rotate relative to the end of the support rod (1) under the action of gravity, so that the mixing disc (3) is always installed on the support rod (1) with the opening facing upward. The mixing disc (3) is provided with a cross partition (31) inside, which divides the mixing disc (3) into four compartments. The bottom of each compartment has a bottom plate (32) that can open and close the compartment. A locking component (4), disposed at the bottom of the mixing plate (3), is used to prevent the bottom plate (32) from opening the corresponding compartment and to release the limiting position on each bottom plate (32); and The hopper (5) is located at the rotation center of the bearing rod (1) and does not rotate with the bearing rod (1). It is used to receive the material falling from the mixing plate (3) above the hopper (5) and to transport the material to the cross intersection of the cross partition (31) located in the mixing plate (3) below it.

2. The coal sample preparation apparatus according to claim 1, characterized in that, A column (33) is provided at the cross intersection of the cross partition (31), the top of the column (33) is conical, and the outlet of the hopper (5) is located directly above the column (33).

3. The coal sample preparation apparatus according to claim 2, characterized in that, Each base plate (32) is rotatably connected to the side wall of the mixing plate (3) at a position relative to the side wall of the mixing plate (3). The column (33) has a receiving cavity inside, and a winding component is provided in the receiving cavity. The winding component is provided with the same number of winding lines (35) as each base plate (32). One end of the winding line (35) is connected to the winding component, and the other end is connected to the corresponding base plate (32). The winding component can wind up each winding line (35), causing the corresponding base plate (32) to rotate upward and close the bottom of the corresponding compartment.

4. The coal sample preparation apparatus according to claim 3, characterized in that, The winding component includes the same number of winding reels (34) as each base plate (32). Each winding reel (34) is distributed vertically and coaxially in the receiving cavity. One end of the corresponding winding line (35) is wound around the corresponding winding reel (34), and the other end passes through the column (33) and connects to the corresponding base plate (32). The cavity is also provided with a rotating unit (36), the output end of which is connected to an output shaft (361), which is used to drive each winding reel (34) to rotate.

5. The coal sample preparation apparatus according to claim 4, characterized in that, The output shaft (361) passes through the rotation center of each take-up reel (34). A limit component (6) is provided on the output shaft (361) for limiting and releasing the limit between each take-up reel (34) and the output shaft (361). After the limit between the take-up reel (34) and the output shaft (361) is released, the take-up reel (34) can rotate relative to the output shaft (361). When the locking component (4) of the mixing reel (3) in the unloaded state releases the limit of the corresponding base plate (32), the base plate (32) can rotate downward under the action of gravity and pull the take-up line (35), thereby driving the corresponding unlimited take-up reel (34) to rotate.

6. The coal sample preparation apparatus according to claim 5, characterized in that, The take-up reels (34) are arranged in pairs, one above the other. The take-up lines (35) corresponding to the two take-up reels (34) in each pair are connected to the two bottom plates (32) in the mixing plate (3). Each pair of take-up reels (34) corresponds to a limiting component (6). The limiting component (6) includes a slide rail (61) opened in the output shaft (361), a slide rod (62) slidably arranged in the slide rail (61), a plurality of through holes (63) opened on the side wall of the output shaft (361) and penetrating the slide rail (61), and a limiter slidably arranged in each through hole (63). Position block (64), the perforations (63) are distributed at the positions of the corresponding take-up reel (34) of the output shaft (361), the take-up reel (34) is provided with a limiting groove (341) corresponding to the perforations (63), one end of the limiting block (64) can extend out of the perforations (63) and enter the limiting groove (341), a first elastic element (65) is provided between the limiting block (64) and the side wall of the output shaft (361), the first elastic element (65) is used to push the end of the limiting block (64) out of the limiting groove (341); The slide bar (62) is provided with a ramp block (621) at the position corresponding to the limiting block (64). The ramp block (621) is used to abut against one end of the limiting block (64). A second elastic element (66) is provided between the slide bar (62) and the slide rail (61). The second elastic element (66) is used to push the slide bar (62) to abut against the limiting block (64), so that the limiting block (64) moves in the through hole (63) toward the winding reel (34) and overcomes the elastic force of the first elastic element (65) until the end of the limiting block (64) extends out of the through hole (63) and enters the limiting groove (341). It also includes a moving element (67) for driving the slide bar (62) to slide in the slide rail (61) so that the inclined block (621) releases its contact with the limiting block (64).

7. The coal sample preparation apparatus according to claim 6, characterized in that, The moving element (67) includes a first magnetic element (671) disposed at the end of the slide bar (62) and a first electromagnet (672) disposed in the output shaft (361). The first electromagnet (672) can generate magnetic force to repel the first magnetic element (671) and push the slide bar (62) to squeeze the second elastic element (66), so that the inclined block (621) separates from the limiting block (64).

8. The coal sample preparation apparatus according to claim 7, characterized in that, The limiting block (64) includes an independent abutting part (641) and a limiting part (642). A third elastic element (643) is provided between the abutting part (641) and the limiting part (642). The abutting part (641) is used to abut against the inclined block (621). One end of the limiting part (642) has an arc surface or an inclined surface, which is used to extend out of the through hole (63) and enter the limiting groove (341) to limit the limiting groove (341).

9. The coal sample preparation apparatus according to claim 8, characterized in that, The first magnetic elements (671) at the ends of the two slide bars (62) corresponding to the two sets of winding reels (34) are arranged opposite each other, and the opposite sides have the same magnetism. The first electromagnet (672) is located between the two slide bars (62), and the magnetic pole of the first electromagnet (672) faces the corresponding first magnetic element (671).

10. The coal sample preparation apparatus according to claim 4, characterized in that, The output shaft (361) has a non-circular slot (362) at its end, and the bottom of the column (33) is provided with an insertion component (7) for inserting into the slot (362) to restrict the rotation of the output shaft (361).

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