Coal sample preparation device

Abstract

The invention provides a coal sample preparation device. The coal sample preparation device comprises a bearing rod, a rotating part for driving the bearing rod to rotate in a vertical plane, two blending discs rotationally arranged at the two ends of the bearing rod, locking parts arranged at the bottoms of the blending discs and a hopper, wherein the blending disc can rotate relative to the end part of the bearing rod under the action of gravity; a cross-shaped partition plate is arranged in the blending disc, the interior of the blending disc is divided into four compartments by the cross-shaped partition plate, and a bottom plate is arranged at the bottom of each compartment; the locking component is used for preventing the bottom plate from opening the corresponding compartment; and the hopper is used for receiving the materials falling from the blending disc and conveying the materials into the blending disc below the hopper. According to the invention, the bearing rod rotates to drive the two blending discs to alternately change positions up and down, coal samples at the upper part are conveyed into the blending disc at the lower part through the hopper, and rapid blending of original coal samples is carried out, so that the labor intensity of workers is greatly reduced, the sample separation speed is high, and the efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of coal sampling, and in particular to a coal sample preparation device. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The original coal sample needs to be prepared so that its weight and particle size meet the requirements of the laboratory before it can be sent for testing. The prepared coal sample must maintain the representativeness of the original coal sample, so the preparation of the coal sample should be carried out in accordance with the national standard GB474-83 "Coal Sample Preparation Method". The preparation of coal samples can be divided into four steps: crushing, screening, blending, and reduction. Among them, crushing can be done mechanically or manually. The sieved coal sample must be blended three times. The blending method is to use a flat iron shovel to pile the coal sample into a cone shape, and each shovel must flow evenly from the top of the cone. The evenly blended coal sample is then divided into four parts using a cross-shaped sample plate until the coal sample reaches the required particle size and weight.

[0004] However, in actual operations, when workers collect original coal samples, they will first take out a large number of coal blocks (from a few dozen kilograms to hundreds of kilograms) from various sampling points in the coal pile. The volume of these original coal samples is too large. If they are all sent for coal sample preparation, the workload of coal sample preparation will be too large. Therefore, while ensuring the accuracy of the samples, the staff will perform the blending and reduction steps in the above-mentioned national standard on the original coal samples to reduce the volume of the original coal samples, and then send them for coal sample preparation.

[0005] However, since the original coal sample has a large volume, manual blending and reduction require a lot of work, which is time-consuming and labor-intensive. Therefore, a coal sample preparation device is proposed to save the initial workload. Summary of the invention

[0006] The main purpose of the present invention is to provide a coal sample preparation device which can save the workload of the initial original coal sample in the blending and reduction process.

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

[0008] Load-bearing rod;

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

[0010] Two mixing discs are rotatably arranged at the two ends of the bearing rod through a connecting part, wherein the center of gravity of the mixing disc is located below the rotation center of the mixing disc, and the mixing disc can rotate relative to the end of the bearing rod under the action of gravity; a cross partition is arranged inside the mixing disc, and the cross partition divides the mixing disc into four compartments, and the bottom of each compartment has a bottom plate that can open and close the compartment;

[0011] A locking component, disposed at the bottom of the blending disk, for preventing the bottom plate from opening the corresponding compartment and releasing the limit of each bottom plate; and

[0012] The hopper is arranged at the rotation center of the bearing rod and does not rotate with the bearing rod. It is used to receive the material dropped from the mixing disk moved above the hopper and transport the material to the cross intersection of the cross partition in the mixing disk below it.

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

[0014] Furthermore, each bottom plate is rotatably connected to the side wall of the mixing disk at a position relative to the side wall of the mixing disk, and a accommodating cavity is provided inside the column, and a winding component is provided in the accommodating cavity, and the winding component is provided with winding wires with the same number as each bottom plate, one end of the winding wire is connected to the winding component, and the other end is connected to the corresponding bottom plate, and the winding component can wind up each winding wire, drive the corresponding bottom 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 the bottom plates, and each winding reel is coaxially distributed in the accommodating cavity, one end of the corresponding winding wire is wound on the corresponding winding reel, and the other end passes through the column and is connected to the corresponding bottom plate;

[0016] A rotating unit is also provided in the accommodating cavity, and an output shaft is connected to the output end of the rotating unit, and the output shaft is used to drive each winding reel to rotate.

[0017] Furthermore, the output shaft is passed through the rotation center of each winding drum, and a limiting component is provided on the output shaft, which is used to limit the position between each winding drum and the output shaft and release the position limit between the winding drum and the output shaft; after the limit between the winding drum and the output shaft is released, the winding drum can rotate relative to the output shaft, and when the locking component of the mixing drum in the no-load state releases the limit of the corresponding bottom plate, the bottom plate can rotate downward under the action of gravity and pull the winding line, thereby driving the corresponding winding drum that has been released from the limit to rotate.

[0018] Furthermore, the winding reels are arranged up and down as a group of two, and the winding lines corresponding to the two winding reels in each group are connected to the two opposite bottom plates in the mixing disk, and each group of winding reels corresponds to a limiting assembly, and the limiting assembly includes a slideway provided in the output shaft, a slide rod slidably arranged in the slideway, a plurality of through-holes provided on the side wall of the output shaft and penetrating the slideway, and a limiting block slidably arranged in each through-hole, the through-holes are distributed at the positions of the output shaft corresponding to the winding reels, and the positions of the winding reels corresponding to the through-holes are provided with limiting grooves matching therewith, one end of the limiting block can extend out of the through-hole into the limiting groove, and a first elastic member is provided between the limiting block and the side wall of the output shaft, and the first elastic member is used to push the end of the limiting block to move out of the limiting groove;

[0019] The position of the slide bar corresponding to the limit block is provided with an inclined surface block, the inclined surface block is used to abut against one end of the limit block, and a second elastic member is provided between the slide bar and the slideway, the second elastic member is used to push the slide bar to abut against the limit block, so that the limit block moves in the perforation toward the direction of the winding disk and overcomes the elastic force of the first elastic member until the end of the limit block extends out of the perforation and enters the limit groove;

[0020] It also includes a moving element, which is used for driving the slide bar to slide in the slideway so that the inclined surface block releases the contact with the limit block.

[0021] Furthermore, the moving element includes a first magnetic part arranged at the end of the sliding rod and a first electromagnet arranged in the output shaft. The first electromagnet can generate a magnetic force to repel the first magnetic part to push the sliding rod to squeeze the second elastic part, so that the inclined block is separated from the limit block.

[0022] Furthermore, the limit block includes an independent abutment portion and a limit portion, a third elastic member is arranged between the abutment portion and the limit portion, the abutment portion is used to abut and cooperate with the inclined plane block, one end of the limit portion has an arc surface or an inclined surface, which is used to extend through the through hole into the limit groove to limit the limit groove, and after the winding disk winds the winding line into place, the limit portion is squeezed in the reverse direction to make the limit portion withdraw from the limit groove.

[0023] Furthermore, the first magnetic parts at the ends of the two slide bars corresponding to the two groups of winding reels are arranged opposite to 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 part.

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

[0025] The beneficial effects of the present invention are embodied in:

[0026] The present invention drives the two blending disks to alternately shift up and down through the rotation of the bearing rod. When the blending disk containing the original coal sample is on the upper side, the bottom plate is opened to transport the coal sample to the cross intersection in the blending disk below through the hopper, and the coal sample is piled into a cone shape. In this way, the original coal sample is quickly blended. The cross partition in the blending disk is equivalent to a cross-shaped sample dividing plate. Since the coal sample is transported to the cross intersection in the blending disk through the hopper, the setting of the cross partition will hardly affect the normal blending of the coal sample, and the step of using a cross-shaped sample dividing plate for sample dividing in the later stage can be omitted, which greatly reduces the labor intensity of the workers, and the sample dividing speed is fast and the efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the attached picture:

[0028] Figure 1 It is a three-dimensional structural diagram of the coal sample preparation device of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the bearing rod of the present invention rotated to a vertical state;

[0030] Figure 3 It is a half-section structural schematic diagram of the coal sample preparation device of the present invention;

[0031] Figure 4 It is a schematic structural diagram of the bottom of the mixing disk of the present invention;

[0032] Figure 5 A half-section view of the blending disk of the present invention;

[0033] Figure 6 for Figure 5 Magnified view at A in the middle;

[0034] Figure 7 for Figure 6 Magnified view at B in the middle;

[0035] Figure 8 It is a half-section view of the locking component described in the present invention.

[0036] Description of reference numerals:

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

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

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

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

[0041] 5. Hopper;

[0042] 6. Limiting assembly; 61. Slideway; 62. Slide bar, 621 inclined block; 63. Perforation; 64. Limiting block; 641. Abutment portion; 642. Limiting portion; 643. Third elastic member; 65. First elastic member; 66. Second elastic member; 67. Moving element; 671. First magnetic member; 672. First electromagnet;

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

[0044] 8. Base;

[0045] 9. Vertical board; 91. Fixed rod. DETAILED DESCRIPTION

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the invention.

[0047] See also Figures 1 to 8 .

[0048] The invention discloses a coal sample preparation device, comprising:

[0049] Bearing rod 1;

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

[0051] Two mixing discs 3 are rotatably arranged at the two ends of the supporting rod 1 through a connecting part, wherein the center of gravity of the mixing disc 3 is located below the rotation center of the mixing disc 3, and the mixing disc 3 can rotate relative to the end of the supporting rod 1 under the action of gravity, ensuring that the mixing disc 3 is always installed on the supporting rod 1 in a state of opening upward; a cross partition 31 is arranged inside the mixing disc 3, and the cross partition 31 divides the mixing disc 3 into four compartments, and the bottom of each compartment has a bottom plate 32 that can open and close the compartment;

[0052] A locking member 4, disposed at the bottom of the blending disk 3, for preventing the bottom plate 32 from opening the corresponding compartment and releasing the position limit of 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 materials dropped from the blending disk 3 moved above the hopper 5 and transport the materials to the cross intersection of the cross partition 31 in the blending disk 3 below it.

[0054] In the specific implementation, the staff pours the collected original coal sample into one of the blending trays 3, and then rotates the carrying rod 1 to a vertical state, so that the blending tray 3 with the original coal sample is located at the top, and the other empty blending tray 3 is located at the bottom, and then the locking component 4 on the upper blending tray 3 releases the limit of each bottom plate 32, and the original coal sample in the upper blending tray 3 falls into the hopper 5, and is transported to the cross intersection of the lower blending tray 3 through the hopper 5 to make the coal sample piled into a cone shape, so that the blending of the materials is completed once, and then the bottom plate 32 is closed (it can be manually (movement) and let the locking component 4 limit each bottom plate 32 again; after the load-bearing rod 1 rotates 180°, the above operation is repeated again. After multiple blending, the materials are blended evenly, and then the blending tray 3 with the coal sample is moved to the bottom, and then the two opposite bottom plates 32 in the blending tray 3 are opened, so that the coal samples in the two compartments are discharged to the outside, thus completing the blending and shrinking of the original coal sample; the above blending and shrinking process is repeated several times until the original coal sample reaches the predetermined volume, and then it can be sent for coal sample preparation according to the national standard.

[0055] According to the present invention, the rotation of the support rod 1 drives the two blending disks 3 to alternately shift up and down. When the blending disk 3 containing the original coal sample is on the top, the bottom plate 32 is opened to transport the coal sample to the cross intersection in the lower blending disk 3 through the hopper 5, and the coal sample is piled into a cone shape. In this way, the original coal sample is quickly blended. The cross partition 31 in the blending disk 3 is equivalent to a cross-shaped sample dividing plate. Since the coal sample is transported to the cross intersection in the blending disk 3 through the hopper 5, the setting of the cross partition 31 will hardly affect the normal blending of the coal sample, and can save the step of using a cross-shaped sample dividing plate for sample separation at a later stage, thereby greatly reducing the labor intensity of the workers, and the sample separation speed is fast and the efficiency is high.

[0056] In one embodiment, a column 33 is provided at the cross intersection of the cross partition 31, the top of the column 33 is conical, and the output port 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 bottom plate 32 is rotatably connected to the side wall of the blending disk 3 via a hinge at a position relative to the side wall of the blending disk 3. The column 33 is provided with 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 wires 35 as each bottom plate 32. One end of the winding wire 35 is connected to the winding component, and the other end is connected to the corresponding bottom plate 32. The winding component can wind up each winding wire 35, drive the corresponding bottom plate 32 to rotate upward, and close the bottom of the corresponding compartment. With this design, the bottom plate 32 can be automatically closed.

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

[0059] In one embodiment, the winding component includes the same number of winding reels 34 as the bottom plates 32, and each winding reel 34 is coaxially distributed in the accommodating cavity. One end of the corresponding winding wire 35 is wound around the corresponding winding reel 34, and the other end passes through the column 33 and is connected to the corresponding bottom plate 32;

[0060] A rotating unit 36 ​​is further disposed in the accommodating cavity. An output end of the rotating unit 36 ​​is connected to an output shaft 361 . The output shaft 361 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 on the column 33 at a position corresponding to the winding wire 35 to reduce the friction of the winding wire 35 during the winding and releasing process.

[0063] In one embodiment, the output shaft 361 is arranged at the rotation center of each winding disk 34, and a limit assembly 6 is arranged on the output shaft 361, which is used to limit each winding disk 34 and the output shaft 361 and release the limit between the winding disk 34 and the output shaft 361; after the winding disk 34 and the output shaft 361 are released from the limit, the winding disk 34 can rotate relative to the output shaft 361, and when the locking component 4 of the mixing disk 3 in the unloaded state releases the limit of the corresponding bottom plate 32, the bottom plate 32 can rotate downward under the action of gravity and pull the winding line 35, driving the corresponding winding disk 34 that has been released from the limit to rotate. With this design, when it is necessary to open two designated bottom plates 32 or all bottom plates 32, it is only necessary to release the limit of the bottom plate 32 and the winding disk 34, and the bottom plate 32 can be automatically opened. In this way, the bottom plate 32 can be automatically opened and closed, and the degree of automation is high.

[0064] In one embodiment, the winding reels 34 are arranged in groups of two up and down, and the winding wires 35 corresponding to the two winding reels 34 in each group are connected to the two opposite bottom plates 32 in the mixing disk 3, and each group of winding reels 34 corresponds to a limiting assembly 6, which includes a slideway 61 opened in the output shaft 361, a slide bar 62 slidably set in the slideway 61, a plurality of through holes 63 opened on the side wall of the output shaft 361 and penetrating the slideway 61, and a plurality of through holes 63 slidably set in each through hole The limiting block 64 in the hole 63, the through hole 63 is distributed at the position of the output shaft 361 corresponding to the winding disk 34, and the winding disk 34 is provided with a limiting groove 341 matching therewith at the position corresponding to the through hole 63, one end of the limiting block 64 can extend out of the through hole 63 and enter the limiting groove 341, and a first elastic member 65 is provided between the limiting block 64 and the side wall of the output shaft 361, and the first elastic member 65 is used to push the end of the limiting block 64 to move out of the limiting groove 341;

[0065] The position of the slide bar 62 corresponding to the limit block 64 is provided with an inclined surface block 621, and the inclined surface block 621 is used to abut against one end of the limit block 64. A second elastic member 66 is provided between the slide bar 62 and the slideway 61, and the second elastic member 66 is used to push the slide bar 62 to abut against the limit block 64, so that the limit block 64 moves in the through hole 63 toward the winding disk 34 and overcomes the elastic force of the first elastic member 65, until the end of the limit block 64 extends out of the through hole 63 into the limit groove 341 and remains in this position for a long time.

[0066] The movable element 67 is also included, which is used to drive the slide bar 62 to slide in the slideway 61 so that the inclined surface block 621 releases the contact with the limit block 64 .

[0067] In specific implementation, usually the second elastic member 66 pushes the slide bar 62 to abut the limit block 64, so that the limit block 64 moves in the through hole 63 toward the winding disk 34 and overcomes the elastic force of the first elastic member 65, until the end of the limit block 64 extends out of the through hole 63 into the limit groove 341 and remains in this position for a long time; in this way, during the mixing process, the bottom plates 32 can be opened and closed synchronously by the rotating unit 36 ​​(achieved by controlling the forward and reverse rotation of the motor); and when shrinking, the limit assembly 6 corresponding to one group of winding disks 34 is started, thereby releasing the corresponding two winding disks 34. The locking component 4 releases the limit of the corresponding bottom plate 32, and the corresponding bottom plate 32 rotates downward under the action of gravity and pulls the winding line 35, driving the corresponding winding drum 34 that has been released from the limit to rotate and complete a contraction; there are many ways to restore the winding of the winding line 35 after the contraction is completed, such as re-limiting the reel 34 and then releasing the limit of another group of reel 34, so that the output shaft 361 will not disturb the other group of reel 34 when driving the group of reel 34 to rotate, until the reeling is in place, and then all reel 34 are limited again.

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

[0069] The moving element 67 includes a first magnetic member 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 a magnetic force to repel the first magnetic member 671 to push the slide bar 62 to squeeze the second elastic member 66, so that the inclined surface block 621 is separated from the limit block 64. This design can miniaturize the moving element 67.

[0070] In one embodiment, the limit block 64 includes a respective independent abutment portion 641 and a limit portion 642, a third elastic member 643 is provided between the abutment portion 641 and the limit portion 642, the abutment portion 641 is used to abut with the inclined block 621, one end of the limit portion 642 has an arc surface or an inclined surface, which is used to extend through the through hole 63 into the limit slot 341 to limit the limit slot 341, and after the winding disk 34 winds the winding wire 35 into place, the limit portion 642 is reversely squeezed to make the limit portion 642 exit the limit slot 341. With this design, since not all the bottom plates 32 are necessarily reset just after the winding disk 34 rotates to a specified number of turns, when some bottom plates 32 are reset and some bottom plates 32 are not reset, the present application can continue to rotate the output shaft 361 until all the bottom plates 32 are reset, without worrying about the winding disk 34 being pulled and damaged.

[0071] In one implementation, the first magnetic members 671 at the ends of the two slide bars 62 corresponding to the two groups of winding reels 34 are arranged opposite to each other, and the opposite sides have the same magnetic properties. 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 member 671. With this design, one electromagnet can drive the two slide bars 62 to move respectively, reducing costs.

[0072] In one embodiment, a non-circular slot 362 is provided at the end of the output shaft 361, and an inserting member 7 is provided at the bottom of the column 33 for inserting into the slot 362 to limit the rotation of the output shaft 361. This design can prevent the winding disk 34 from driving the output shaft 361 to rotate in turn.

[0073] Specifically, an active cavity 71 is provided at the position of the bottom of the column 33 corresponding to the slot 362, and an insert block 72 is slidably provided in the active cavity 71, and one end of the insert block 72 can pass through the active cavity 71 and be inserted into the slot 362;

[0074] A second magnetic member 73 is disposed at one end of the plug block 72 located in the active cavity 71, another second electromagnet 74 is disposed in the active cavity 71, and a fourth elastic member 75 is disposed between the second electromagnet 74 and the second magnetic member 73 for pushing the second magnetic member 73 to move toward the slot 362. With this design, one electromagnet can drive two plug blocks 72 to move, and the volume is small.

[0075] Preferably, the first magnetic member 671 and the second magnetic member 73 may be permanent magnets, or 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 arranged on a fixed block 41 at the bottom of the cross partition 31, and the vertical projection of the fixed block 41 does not exceed the projection of the cross partition 31. A locking block 42 is slidably arranged in the fixed block 41, and one end of the locking block 42 can pass through the fixed block 41 and extend to the bottom of one side of the bottom plate 32. A telescopic component 43 is arranged on one side of the fixed block 41, and one end of the telescopic component 43 extends into the fixed block 41 and is in a wedge-shaped block shape, which is used to squeeze one end of the locking block 42 to extend out of the fixed block 41; a fifth elastic member 44 is arranged in the fixed block 41, and the fifth elastic member 44 is used to push the end of the locking block 42 to extend into the fixed block 41 to release the limitation on the floor.

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

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

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

[0081] The hopper 5 is connected to the fixing 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 replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0084] It should be noted that if the embodiments of the invention involve directional indications (such as up and down), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0085] In addition, the meaning of "and / or" appearing in the full text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "multiple" means more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the invention.

Claims

1. A coal sample preparation device, characterized in that: include: A load-bearing rod (1); A rotating component (2) connected to the middle portion of the bearing rod (1) and used to drive the bearing rod (1) to rotate in a vertical plane; Two mixing discs (3) are rotatably arranged at the two ends of the support rod (1) through a connecting portion, wherein the center of gravity of the mixing disc (3) is located below the rotation center of the mixing disc (3), and the mixing disc (3) can rotate relative to the end of the support rod (1) under the action of gravity; a cross partition (31) is arranged inside the mixing disc (3), and the cross partition (31) divides the mixing disc (3) into four compartments, and the bottom of each compartment has a bottom plate (32) that can open and close the compartment; A locking component (4) is arranged at the bottom of the mixing disk (3) and is used to prevent the bottom plate (32) from opening the corresponding compartment and to release the position limit of each bottom plate (32); and The hopper (5) is arranged 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 dropped from the blending plate (3) moved above the hopper (5) and transport the material to the cross intersection of the cross partition (31) located in the blending plate (3) below it.

2. The coal sample preparation device 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 output port of the hopper (5) is located directly above the column (33).

3. The coal sample preparation device according to claim 2, characterized in that: Each bottom plate (32) is rotatably connected to the side wall of the mixing disk (3) at a position relative to the side wall of the mixing disk (3); a receiving cavity is provided inside the column (33); a winding component is provided inside the receiving cavity; the winding component is provided with winding wires (35) of the same number as each bottom plate (32); one end of the winding wire (35) is connected to the winding component, and the other end is connected to the corresponding bottom plate (32); the winding component can wind up each winding wire (35), drive the corresponding bottom plate (32) to rotate upward, and close the bottom of the corresponding compartment.

4. The coal sample preparation device according to claim 3, characterized in that: The winding component comprises a winding reel (34) having the same number as the bottom plates (32), and each winding reel (34) is coaxially distributed in the accommodating cavity up and down, and one end of a corresponding winding wire (35) is wound on the corresponding winding reel (34), and the other end passes through the column (33) and is connected to the corresponding bottom plate (32); A rotating unit (36) is also provided in the accommodating chamber, and an output end of the rotating unit (36) is connected to an output shaft (361), and the output shaft (361) is used to drive each winding disk (34) to rotate.

5. The coal sample preparation device according to claim 4, characterized in that: The output shaft (361) is arranged at the rotation center of each winding disk (34), and a limit assembly (6) is arranged on the output shaft (361) for limiting the position between each winding disk (34) and the output shaft (361) and releasing the position limit between the winding disk (34) and the output shaft (361); after the position limit between the winding disk (34) and the output shaft (361) is released, the winding disk (34) can rotate relative to the output shaft (361), and when the locking component (4) of the mixing disk (3) in the unloaded state releases the position limit of the corresponding bottom plate (32), the bottom plate (32) can rotate downward under the action of gravity and pull the winding wire (35), thereby driving the corresponding winding disk (34) that has been released from the position limit to rotate.

6. The coal sample preparation device according to claim 5, characterized in that: The winding reels (34) are arranged in groups of two up and down, and the winding wires (35) corresponding to the two winding reels (34) in each group are connected to two opposite bottom plates (32) in the mixing disk (3). Each group of winding reels (34) corresponds to a limiting assembly (6), and the limiting assembly (6) includes a slideway (61) provided in the output shaft (361), a slide bar (62) slidably arranged in the slideway (61), a plurality of through holes (63) provided on the side wall of the output shaft (361) and penetrating the slideway (61), and a limiting assembly (62) slidably arranged in each through hole (63). A positioning block (64), wherein the through hole (63) is distributed at a position of the output shaft (361) corresponding to the winding disk (34), and a limiting groove (341) matching therewith is arranged at a position of the winding disk (34) corresponding to the through hole (63), and one end of the limiting block (64) can extend out of the through hole (63) and enter into the limiting groove (341), and a first elastic member (65) is arranged between the limiting block (64) and the side wall of the output shaft (361), and the first elastic member (65) is used to push the end of the limiting block (64) to move out of the limiting groove (341); A slope block (621) is provided at a position of the slide bar (62) corresponding to the limit block (64), and the slope block (621) is used to abut against one end of the limit block (64). A second elastic member (66) is provided between the slide bar (62) and the slideway (61), and the second elastic member (66) is used to push the slide bar (62) to abut against the limit block (64), so that the limit block (64) moves in the through hole (63) toward the winding disk (34) and overcomes the elastic force of the first elastic member (65) until the end of the limit block (64) extends out of the through hole (63) and enters the limit groove (341); It also includes a moving element (67) for driving the slide bar (62) to slide in the slideway (61) so that the inclined surface block (621) releases the contact with the limit block (64).

7. The coal sample preparation device according to claim 6, characterized in that: The moving element (67) comprises a first magnetic member (671) arranged at the end of the sliding rod (62) and a first electromagnet (672) arranged in the output shaft (361); the first electromagnet (672) is capable of generating a magnetic force to repel the first magnetic member (671) to push the sliding rod (62) to squeeze the second elastic member (66), so that the inclined block (621) is separated from the limit block (64).

8. The coal sample preparation device according to claim 7, characterized in that: The limiting block (64) comprises a respective independent abutting portion (641) and a limiting portion (642), a third elastic member (643) being arranged between the abutting portion (641) and the limiting portion (642), the abutting portion (641) being used for abutting and cooperating with the inclined plane block (621), one end of the limiting portion (642) having an arc surface or an inclined surface, which is used for extending through the through hole (63) into the limiting groove (341) to limit the limiting groove (341), and after the winding reel (34) winds the winding wire (35) into place, the limiting portion (642) is pressed in the reverse direction so that the limiting portion (642) exits the limiting groove (341).

9. The coal sample preparation device according to claim 8, characterized in that: The first magnetic parts (671) at the ends of the two slide bars (62) corresponding to the two groups of winding disks (34) are arranged opposite to each other, and the opposite sides have the same magnetic properties. 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 part (671).

10. The coal sample preparation device according to claim 4, characterized in that: A non-circular slot (362) is provided at the end of the output shaft (361), and an inserting component (7) is provided at the bottom of the column (33) for inserting into the slot (362) to limit the rotation of the output shaft (361).

Images