CN108375493B - Coal briquette crushing mechanism for coal quality detection and analysis for power plant and coal sample preparation device - Google Patents
Coal briquette crushing mechanism for coal quality detection and analysis for power plant and coal sample preparation device Download PDFInfo
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- CN108375493B CN108375493B CN201810207993.8A CN201810207993A CN108375493B CN 108375493 B CN108375493 B CN 108375493B CN 201810207993 A CN201810207993 A CN 201810207993A CN 108375493 B CN108375493 B CN 108375493B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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Abstract
Coal quality detection analysis is with coal cinder reducing mechanism and coal sample preparation device to power plant relates to coal quality detection technical field. The device comprises a frame, a coal block crushing mechanism, a crushed coal transferring mechanism, a coal powder preparing mechanism, a coal powder measuring mechanism and a coal cake preparing mechanism, wherein the coal block crushing mechanism is arranged at the top of the frame and used for crushing coal blocks, the crushed coal transferring mechanism is arranged below the coal block crushing mechanism and used for transferring crushed coal, the coal powder preparing mechanism is arranged on one side of the crushed coal transferring mechanism and used for grinding the crushed coal into coal powder, the coal powder measuring mechanism is arranged on the coal powder preparing mechanism and used for measuring part of required coal powder and conveying the part of the coal powder to the coal cake preparing mechanism, and the coal cake preparing mechanism is used for preparing the coal cakes. The invention can efficiently realize the preparation of the coal cake so as to facilitate the detection of the coal quality.
Description
Technical Field
The invention relates to the technical field of coal quality detection, in particular to a coal briquette crushing mechanism for coal quality detection and analysis of a power plant and a coal sample preparation device.
Background
Before the detection of coal quality by using a laser-induced spectrum analysis technique, the coal briquette needs to be made into a coal cake. For the acquisition of coal cake, it can be obtained by punching coal dust by a tablet press. Before preparing the coal cake, the coal cake is required to be crushed and ground to obtain coal dust. In the prior art, crushing and grinding equipment is often used for processing a plurality of coal blocks, and coal dust for preparing coal blocks is often from the same batch and cannot represent the quality level of all the coal blocks.
Disclosure of Invention
The invention aims to provide a coal briquette crushing mechanism for coal quality detection and analysis of a power plant and a coal sample preparation device, which are used for solving the problem that crushing and grinding of coal briquettes in the prior art cannot be conducted on single coal briquettes, and simultaneously facilitating mixing of multiple batches of coal samples so as to ensure detection quality.
The technical scheme adopted for solving the technical problems is as follows: the coal quality detection and analysis coal briquette crushing mechanism for the power plant is characterized by comprising a crushing box, wherein a left crushing wheel, a right crushing wheel, a left fine crushing wheel and a right fine crushing wheel are rotatably arranged in the crushing box, the left fine crushing wheel and the right fine crushing wheel are arranged left and right, the left crushing wheel and the right crushing wheel are positioned above the left fine crushing wheel and the right fine crushing wheel, and a driving unit for driving the left crushing wheel, the right crushing wheel, the left fine crushing wheel and the right fine crushing wheel to rotate is arranged on the crushing box;
The bottom of the crushing box is provided with a quantitative cylinder, a quantitative wheel is rotatably arranged in the inner cavity of the quantitative cylinder, a quantitative groove is arranged on the circular outer wall of the quantitative wheel, and an unloading motor for driving the quantitative wheel to rotate is arranged on the quantitative cylinder.
Further, the driving unit comprises a crushing motor fixed on the crushing box, a driving gear fixed on an output shaft of the crushing motor, a left driven gear and a left driving sprocket coaxially arranged with the left crushing wheel, a right driven gear and a right driving sprocket coaxially arranged with the right crushing wheel, a left driven sprocket coaxially arranged with the left fine crushing wheel, a right driven sprocket coaxially arranged with the right fine crushing wheel, a transition gear arranged between the driving gear and the right driven gear, and a chain arranged between the left driving sprocket and the left driven sprocket and between the right driving sprocket and the right driven sprocket.
Further, a stop block which is arranged left and right is arranged on the inner wall of the quantitative cylinder, the upper surface of the stop block is an inclined surface, and an arc surface which is in contact with the quantitative wheel is arranged on the stop block.
Further, a plurality of cutting knives are arranged on the circular outer wall of the left crushing wheel, a radial rod is arranged on the circular outer wall of the right crushing wheel, and a conical drilling knife is arranged on the radial rod; the outer walls of the left fine crushing wheel and the right fine crushing wheel are provided with fine crushing teeth.
The device is characterized by comprising a frame, a coal piece crushing mechanism, a crushed coal transferring mechanism, a coal powder preparing mechanism, a coal powder measuring mechanism and a coal cake preparing mechanism, wherein the coal piece crushing mechanism is arranged at the upper part of the frame, the crushed coal transferring mechanism is arranged below the coal piece crushing mechanism and comprises a transferring table rotatably arranged on the frame and a transferring unit for driving the transferring table to rotate in a horizontal plane, a conveying groove is formed in the top of the transferring table, and the bottom of the conveying groove is an inclined plane;
the pulverized coal preparation mechanism comprises a guide rail fixed in a frame, a moving block arranged on the guide rail in a sliding manner, a translation unit for driving the moving block to reciprocate, a wheel frame arranged below the moving block, a compression spring arranged between the wheel frame and the moving block, a grinding wheel rotatably arranged on the wheel frame, and a base arranged below the grinding wheel, wherein the base is positioned below the transfer table, and a grinding surface in contact fit with the grinding wheel is arranged on the base;
a first electric telescopic rod is fixed at the rear side of the base, a pulverized coal pushing brush is fixed on the first electric telescopic rod, a front scraping plate, a rear scraping plate and a brush head which are sequentially arranged from front to back are arranged on the pulverized coal pushing brush, and sweeping bristles are arranged on the brush head;
The pulverized coal measuring mechanism comprises a measuring box fixed at the front side of the base, a distributor and a storage, wherein the distributor is arranged in the measuring box, a first storage cavity and a second storage cavity are arranged on the storage, the distributor is of an inverted V-shaped structure, the first storage cavity and the second storage cavity are positioned below the distributor, a first stripper plate is arranged at the bottom of the first storage cavity, a second stripper plate is arranged at the bottom of the second storage cavity, and a second electric telescopic rod for driving the first stripper plate to move and a third electric telescopic rod for driving the second stripper plate to move are arranged on the storage; a receiving block is arranged below the measuring box, and a blanking pipe is arranged at the lower part of the receiving block;
The briquette preparation mechanism comprises a sliding seat arranged on the frame in a sliding way, a fourth electric telescopic rod for driving the sliding seat, a lower die arranged on the sliding seat, a pressing oil cylinder fixedly connected with the frame, and an upper die arranged on a piston rod of the pressing oil cylinder.
Further, the translation unit comprises a translation motor fixed on the guide rail, a translation gear arranged at the output end of the translation motor, and a rack slidably mounted on the guide rail, wherein the rack is meshed with the translation gear and fixedly connected with the moving block.
Further, the front scrapers are arranged in a row and distributed at equal intervals, the rear scrapers are also arranged in a row and distributed at equal intervals, and the rear scrapers correspond to gaps between two connected front scrapers.
Further, two sides of the wheel frame are respectively provided with a bracket, the lower part of the bracket is fixedly provided with a pulverized coal erasing brush contacted with the circular outer wall of the grinding wheel, and the pulverized coal erasing brush is provided with erasing bristles and an erasing plate which are arranged up and down; a cooling pipe filled with cooling water is arranged in the base.
Further, the lower die comprises a circular arc-shaped fixed die body fixed in the inner cavity of the sliding seat and a circular arc-shaped movable die body movably arranged in the inner cavity of the sliding seat, a round block is arranged at the lower part of the inner side of the movable die body, and the movable die body and the fixed die body form a whole circle.
Further, the transfer unit comprises a vertical shaft fixedly connected with the transfer table, a driven bevel gear fixed on the vertical shaft, a crank rotatably installed on the frame, and a driving bevel gear fixed on the crank and meshed with the driven bevel gear.
The beneficial effects of the invention are as follows: the coal briquette crushing mechanism for detecting and analyzing the coal quality of the power plant and the coal sample preparation device provided by the invention have at least the following advantages:
1. The single coal blocks can be crushed, and the required weight or volume of crushed coal can be measured according to the requirement for the next treatment;
2. after the coal powder is prepared, the required volume or weight of the coal powder can be measured according to the requirement, and a part of the coal powder can be measured from different coal blocks respectively and mixed for preparing coal cakes;
3. the single coal briquette can be processed into a coal briquette for detection, or part of coal dust can be taken from a plurality of coal briquettes and mixed to be made into a coal briquette for detection.
Drawings
FIG. 1 is a schematic view of the external shape of the present invention;
FIG. 2 is a schematic view of a coal pulverizing mechanism;
FIG. 3 is a schematic view of the internal structure of FIG. 2;
FIG. 4 is a schematic diagram of a drive unit;
FIG. 5 is a schematic view of a metering cylinder;
FIG. 6 is a three-dimensional schematic of a dosing wheel;
FIG. 7 is a schematic view of a cutting blade;
FIG. 8 is an assembled schematic view of a coal briquette pulverizing mechanism, a pulverized coal transferring mechanism, and a pulverized coal producing mechanism;
FIG. 9 is a three-dimensional schematic of a transfer station;
FIG. 10 is a schematic front view of a coal dust preparation mechanism;
FIG. 11 is a schematic side view of a coal dust production mechanism;
FIG. 12 is a schematic view of a pulverized coal scrubbing brush;
FIG. 13 is a schematic view of a base;
FIG. 14 is a schematic diagram of a coal dust production process;
FIG. 15 is a schematic view of a coal dust pushing brush;
FIG. 16 is a cross-sectional view A-A of FIG. 15;
FIG. 17 is one of the schematic diagrams of the pulverized coal measuring mechanism;
FIG. 18 is a second schematic view of a pulverized coal measuring mechanism;
FIG. 19 is a schematic view of one of the positions of the briquette making mechanism and the pulverized coal measuring mechanism;
FIG. 20 is a schematic view of a lower die;
FIG. 21 is a second schematic diagram of the positions of the briquette making mechanism and the pulverized coal measuring mechanism;
FIG. 22 is a three-dimensional schematic of a movable mold body;
FIG. 23 is a schematic cross-sectional view of a carriage;
In the figure: 1 frame, 11 outlet, 2 crushing box, 20 box cover, 21 first rotation shaft, 22 second rotation shaft, 23 third rotation shaft, 24 fourth rotation shaft, 25 left crushing wheel, 251 cutter, 26 right crushing wheel, 261 radial bar, 262 drill, 27 left crushing wheel, 271 fine crushing tooth, 28 right crushing wheel, 29 collecting block, 3 metering cylinder, 31 lug plate, 32 unloading motor, 33 dosing wheel, 331 dosing groove, 34 stopper, 341 arc surface, 4 crushing motor, 41 driving gear, 42 left driven gear, 43 right driven gear, 44 left driving sprocket, 45 left driven sprocket, 46 right driving sprocket, 47 right driven sprocket, 48 chain, 49 transition gear, 5 transfer table, 51 conveying groove, 52 vertical shaft, 53 driven bevel gear, 54 bearing seat, 55 crank, 56 driving bevel gear, 6 guide rail, 61 rack, 611 translation gear, 612 translation motor, 62 moving block, 63 wheel carrier, 631 guide post, 632 pressing spring, 64 grinding wheels, 65 brackets, 651 bracket mounting plates, 66 pulverized coal erasure brushes, 661 erasure brushes, 662 erasure plates, 67 sliding grooves, 7 bases, 71 inclined surfaces, 72 grinding surfaces, 73 grooves, 74 cooling pipes, 75 bottom plates, 751 supporting rods, 8 pulverized coal pushing brushes, 81 front scrapers, 82 rear scrapers, 83 brush heads, 831 sweeping bristles, 84 first electric telescopic rods, 85 supporting plates, 86 supporting seats, 9 measuring boxes, 91 inlets, 92 spray heads, 93 distributors, 94 storages, 941 first storage cavities, 942 second storage cavities, 95 supporting seats, 951 second electric telescopic rods, 952 third electric telescopic rods, 953 first pushing plates, 954 second pushing plates, 96 through holes, 961 first discharge plates, 962 second discharge plates, 97 supporting blocks, 971 conical holes, 972 blanking pipes, 98 sliding seats, 981 fixed mold bodies, 982 movable mold bodies, 983 round blocks, 984 plug blocks, 985 fourth electric telescopic rods, 986 connecting plate, 99 pressing oil cylinder, 991 upper die and 10 pulverized coal.
Detailed Description
As shown in fig. 1 to 23, the present invention mainly comprises a frame 1, a coal briquette pulverizing mechanism, a quantitative barrel 3, a crushed coal transferring mechanism, a pulverized coal making mechanism, a pulverized coal measuring mechanism and a coal briquette making mechanism, and is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a frame 1 is a basic component of the invention, the frame is a section welding piece, other components are directly arranged on or in the frame, and an outlet 11 is arranged on the front side surface of the frame.
The top of the frame is provided with a coal briquette crushing mechanism, as shown in fig. 2 and 3, the coal briquette crushing mechanism mainly comprises a crushing box 2, a left crushing wheel 25, a right crushing wheel 26, a left fine crushing wheel 27, a right fine crushing wheel 28 and a driving unit, the top of the crushing box 2 is movably provided with a box cover 20, the box cover and the crushing box can be hinged, and coal briquettes are added into the crushing box after the box cover is opened. The first rotating shaft 21, the second rotating shaft 22, the third rotating shaft 23 and the fourth rotating shaft 24 are rotatably installed in the crushing box, the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft are respectively positioned on four vertexes of a quadrangle, a left crushing wheel 25 is fixed on the first rotating shaft, a right crushing wheel 26 is fixed on the second rotating shaft, a plurality of cutting knives 251 are fixed on the circular outer wall of the left crushing wheel, as shown in fig. 7, the whole cutting knives are conical, the cross section is diamond, the upper edges and the lower edges of the cutting knives are provided with cutting edges, a plurality of radial rods 261 are fixed on the circular outer wall of the right crushing wheel, and conical drills 262 are fixed at one ends of the radial rods far away from the right crushing wheel. A left fine crushing wheel 27 is fixed on the third rotating shaft, a right fine crushing wheel 28 is fixed on the fourth rotating shaft, and a plurality of fine crushing teeth 271 are fixed on the circular outer walls of the left fine crushing wheel and the right fine crushing wheel. Collecting blocks 29 are respectively arranged below the left fine crushing wheel and the right fine crushing wheel, the collecting blocks are triangular prism-shaped, and crushed coal falling on the collecting blocks slides downwards along the inclined surfaces of the collecting blocks.
For driving the rotation of the left pulverizing wheel, the right pulverizing wheel, the left fine wheel and the right fine wheel, a driving unit is provided on the pulverizing box, and as shown in fig. 4, the driving unit mainly comprises a pulverizing motor 4 fixed on the pulverizing box, a driving gear 41 fixed on the output shaft of the pulverizing motor, a transition gear 49 rotatably mounted on the pulverizing box, a left driven gear 42 and a left driving sprocket 44 fixed on the first rotation shaft, a right driven gear 43 and a right driving sprocket 46 fixed on the second rotation shaft, a left driven sprocket 45 fixed on the third rotation shaft, a right driven sprocket 47 fixed on the fourth rotation shaft, the driving gear is meshed with the left driven gear while being meshed with the transition gear, and a chain 48 is provided between the left driving sprocket and the left driven sprocket, and between the right driving sprocket and the right driven sprocket. The left crushing wheel rotates reversely with the right crushing wheel, the left crushing wheel rotates clockwise, the right crushing wheel rotates anticlockwise, and the rotating speed of the left crushing wheel is greater than that of the right crushing wheel; after putting the coal briquette into a crushing box, clamping the coal briquette under the action of left and right crushing wheels and enabling the coal briquette to move downwards; because the rotational speed of left crushing wheel is greater than right crushing wheel, like this the coal cinder is at the in-process that moves down, and the coal cinder is pressed from both sides tightly by cutting knife and radial pole, and the cutting knife has the cutting effort to the coal cinder this moment, and the last brill sword of radial pole has the effort of boring to the coal cinder, and then breaks the coal cinder, and left and right fine crushing wheel is used for realizing the fine crushing to the coal cinder, and the coal cinder after twice smashing becomes the crushed coal.
The lower part of the crushing box is provided with a quantitative cylinder 3, as shown in fig. 3 and 5, the top of the quantitative cylinder is provided with an ear plate 31 fixedly connected with the crushing box, and the inside of the quantitative cylinder is provided with a quantitative wheel 33 which is rotatably arranged with the quantitative cylinder. The outer wall of the quantifying cylinder is provided with an unloading motor 32 for driving the quantifying wheel to rotate, as shown in fig. 6, the circular outer wall of the quantifying wheel is provided with a quantifying groove 331, and the quantifying groove can be used for containing crushed coal with a fixed volume. As shown in fig. 5, a pair of left and right stoppers 34 are provided on the inner wall of the quantitative cylinder, the upper surfaces of the stoppers are inclined surfaces, the stoppers are provided with arc surfaces contacting with the quantitative wheel, and the arc surfaces of the stoppers contact with the outer wall of the quantitative wheel to prevent crushed coal from falling down through the gap between the quantitative wheel and the inner wall of the quantitative cylinder.
Through the above description, the coal briquette crushing mechanism realizes the crushing of the coal briquette, the quantitative wheel placed in the quantitative cylinder can measure the crushed coal with a fixed volume/weight range, and when the unloading motor works to drive the quantitative wheel to rotate so that the quantitative groove faces downwards, the crushed coal falls down.
In order to realize the transfer transition of the crushed coal, a transfer table 5 is arranged below the quantitative cylinder as shown in fig. 8, the whole transfer table is in a conical structure as shown in fig. 9, a conveying groove 51 is arranged at the top of the transfer table, the bottom of the conveying groove is an inclined surface, and the crushed coal slides down along the inclined surface. The bottom of the transfer table is fixedly connected with a vertical shaft 52 rotatably arranged in the frame, a driven bevel gear 53 is fixed on the vertical shaft, a bearing seat 54 is fixed in the frame, a crank 55 is fixed on the bearing inner ring of the bearing seat, a driving bevel gear 56 meshed with the driven bevel gear is fixed on the crank, the transfer table can be driven to rotate when the crank is rocked, and crushed coal falling on the transfer table slides on the coal dust preparation mechanism along a conveying groove when the small end of the transfer table faces the inside of the frame. When the small end of the transfer table faces the outside of the frame, the crushed coal falling on the transfer table slides to the outside of the frame along the conveying groove. The vertical shaft, the driven bevel gear, the driving bevel gear and the crank form a transferring unit, and the transferring table, the vertical shaft, the driven bevel gear, the driving bevel gear and the crank form a crushed coal transferring mechanism. The crushed coal with the required volume is measured through the quantitative wheel, and the surplus unused crushed coal can be conveyed to the outside of the frame through the transfer table.
As shown in fig. 8, 10 and 11, the pulverized coal preparing mechanism mainly comprises a guide rail 6 fixed on a frame, a moving block 62 slidably provided on the guide rail, a translation unit driving the moving block to reciprocate on the guide rail, a wheel frame 63 fixed on the moving block, a grinding wheel 64 rotatably mounted on the wheel frame, a guide post 631 fixed on the top of the wheel frame, a pressing spring 632 provided between the wheel frame and the moving block, a bracket 65 fixed on both sides of the wheel frame, a pulverized coal wiping brush 66 fixed on the lower portion of the bracket, and a base 7 provided below the grinding wheel. The guide rail is of an inverted U-shaped structure, the upper part of the guide post is arranged in the inner cavity of the moving block in a sliding way, a support mounting plate 651 is fixed on the upper part of the support, and the support mounting plate is fixedly connected with the wheel frame through a screw. The translation unit includes translation motor 612 fixed on the guide rail, translation gear 611 fixed at translation motor output and slide rack 61 that sets up in the guide rail, is equipped with spout 67 on the guide rail, and rack and spout sliding connection, the movable block is fixed in the bottom of rack. As shown in fig. 12, the pulverized coal erasure brush is provided with erasure bristles 661 and erasure plates 662 arranged up and down, the erasure plates are in contact with the outer wall of the grinding wheel, and the erasure bristles are also in contact with the outer wall of the grinding wheel. As shown in fig. 13, the base has a rectangular parallelepiped structure, a conical groove is provided at the top of the base, inclined surfaces 71 are provided at both sides of the conical groove, crushed coal falls into the base along the inclined surfaces, a grinding surface 72 is provided at the bottom of the conical groove, and the grinding surface cooperates with a grinding wheel to crush the crushed coal. Under the drive of the translation unit, the grinding wheel rolls on the grinding surface, so that the crushed coal is crushed. The pulverized coal 10 adhered to the grinding wheel can be erased by the pulverized coal erasing brush arranged on the wheel frame, and the compacting spring arranged between the wheel frame and the moving block can compact the grinding wheel and the grinding surface, so that the crushed coal can be effectively ground. The translation motor, the translation gear and the rack form a translation unit.
A groove 73 is arranged at the bottom of the base, a cooling pipe 74 filled with cooling water is arranged in the groove, a bottom plate 75 is detachably arranged in the groove, and a supporting rod 751 is arranged between the bottom plate and the cooling pipe. The long-time friction between the grinding surface and the grinding wheel can generate heat, and the cooling pipe can absorb the heat to avoid spontaneous combustion of coal dust.
The grinding wheel can grind crushed coal into pulverized coal after reciprocating on the grinding surface for pushing the pulverized coal on the grinding surface out of the base, the supporting plate 82 is fixed on the rear side of the base, the supporting seat 86 is fixed on the supporting plate, the first electric telescopic rod 84 is fixed on the supporting seat, the pulverized coal pushing brush 8 is fixed on the first electric telescopic rod, as shown in fig. 15, the front scraping plate 81, the rear scraping plate 82 and the brush head 83 which are sequentially arranged from front to back are arranged on the pulverized coal pushing brush, as shown in fig. 16, the front scraping plate is a plurality of the front scraping plates which are arranged at equal intervals and are arranged at intervals, the rear scraping plate corresponds to gaps between two adjacent front scraping plates, the pulverized coal pressed into pieces can be separated, the sweeping brush head 831 is arranged on the brush head, a small amount of pulverized coal possibly remains after the front scraping plate and the pulverized coal on the grinding surface is scraped, and the sweeping brush hair is used for pushing a small amount of pulverized coal.
The front side of the base is provided with a pulverized coal measuring mechanism, as shown in fig. 17 and 18, the pulverized coal measuring mechanism mainly comprises a measuring box 9 fixedly connected with the base, a distributor 93 arranged in the measuring box, a storage 94 arranged below the distributor, a first storage cavity 941 and a second storage cavity 942 arranged on the storage, a first stripper 961 arranged at the bottom of the first storage cavity, a second stripper 962 arranged at the bottom of the second storage cavity, a second electric telescopic rod 951 driving the first stripper to move, a third electric telescopic rod 952 driving the second stripper to move, a bearing block 97 arranged below the measuring box, and a blanking pipe 972 arranged at the bottom of the bearing block, wherein the measuring box is of a convex structure, an inlet 91 is arranged on the side surface of the measuring box and is communicated with a conical groove on the base, a spray head 92 is arranged at the top of the inner cavity of the measuring box and is connected with an air pump through an air pipe, and air is blown into the measuring box through the spray head to realize cleaning in the measuring box. The dispenser is of inverted V-shaped configuration with the top of the dispenser being spaced from the front end of the inlet less than the distance between the top of the dispenser and the rear end of the inlet. The pulverized coal continuously slides downwards along the two inclined planes of the distributor after falling on the distributor, and the pulverized coal on one inclined plane falls into the first storage cavity, and the pulverized coal on the other inclined plane falls into the second storage cavity. The bottom of the memory is provided with an installation cavity, a support 95 is fixed in the installation cavity, a first electric telescopic rod and a second electric telescopic rod which are arranged up and down are fixed on the support, a first push plate 953 is arranged between the first electric telescopic rod and a first stripper plate, and a second push plate 954 is arranged between the second electric telescopic rod and a second stripper plate. The first push plate is provided with a through hole 96 for avoiding the third electric telescopic rod, the top of the bearing block is provided with a conical hole 971, and pulverized coal falling from the first storage cavity or the second storage cavity can pass through the conical hole and then enter the blanking pipe 972.
A slide seat 98 is arranged below the measuring box and is in sliding connection with the frame. A fourth electric telescopic rod 985 for driving the sliding seat to move forwards and backwards is arranged in the frame, a connecting plate 986 is arranged between the fourth electric telescopic rod and the sliding seat, as shown in fig. 23, the sliding seat is of a hollow cylindrical structure, as shown in fig. 20, a semicircular arc fixed die body 981 is fixed in the inner cavity of the sliding seat, a semicircular arc movable die body 982 is also arranged in the inner cavity of the sliding seat, a round block 983 is fixed at the bottom of the movable die body, and the round block is fixedly connected with the inner wall of the movable die body. In order to realize the close contact between the fixed die body and the movable die body, two ends of the movable die body are provided with inserting blocks 984 which are in inserting fit with inserting grooves on the fixed die body. The fixed die body, the movable die body and the sliding seat form a lower die. As shown in fig. 21, a lower pressure oil cylinder 99 is arranged at the front side of the blanking pipe, an upper die 991 is fixed on a piston rod of the lower pressure oil cylinder, the upper die and the lower die are matched to realize the pressing of the coal cake, and after the movable die body is taken out from the fixed die body, the pressed coal cake can be taken out.
When the coal sample is detected, a plurality of coal blocks extracted from each batch of coal samples can be crushed and ground one by one to obtain coal dust, then coal dust with required weight is measured from the coal dust obtained by crushing and grinding each coal block to obtain coal cakes, each coal cake is detected by utilizing a laser-induced spectrum analysis technology, and further coal quality data of the whole coal sample are obtained, and at the moment, the coal cakes and the coal blocks are in one-to-one correspondence. In addition, the coal blocks extracted from each batch of coal samples can be crushed and ground one by one, then a part of pulverized coal obtained by crushing and grinding each coal block is measured, the measured pulverized coal is mixed together to prepare a coal cake, the coal cake is detected, and further coal quality data of the whole coal samples are obtained, and at the moment, the coal cake is prepared by taking a part of each of the plurality of coal blocks. As shown in fig. 18, the relative positions of the inlet and the distributor are different, and the volumes of the pulverized coal falling into the first storage chamber and the second storage chamber are different. When the distributor is relatively close to the right, the volume of the pulverized coal falling into the first storage cavity is more; when the distributor is relatively far to the left, the volume of the pulverized coal falling into the second storage cavity is more; when the distributor is relatively centered, the volume of pulverized coal falling in the first storage chamber is substantially equivalent to the volume of pulverized coal falling in the second storage chamber.
When a part of the coal blocks are required to be taken out to be made into a coal cake, the distributor is relatively right, so that the volume of the coal powder falling into the second storage cavity is smaller, and the second stripper plate is driven to be opened, so that the coal powder in the second storage cavity falls into the lower die. After each pair of coal blocks is crushed and ground, a certain volume of coal powder enters a lower die, and the coal powder in each coal block is mixed to prepare a coal cake.
When each coal briquette is crushed and ground to prepare coal briquettes respectively, the volume of coal dust falling into the first storage cavity is relatively large, at the moment, the first stripper plate is opened, so that enough coal dust in the first storage cavity falls into the lower die, and then the coal briquettes are obtained by punching. The lower oil cylinder drives the upper die to finish cake pressing operation and then move reversely, so that the upper die moves out of the lower die, and the fourth electric telescopic rod continues to move, so that the sliding seat extends out of the frame through the outlet.
Claims (7)
1. The device is characterized by comprising a frame, a coal piece crushing mechanism, a crushed coal transferring mechanism, a coal powder preparing mechanism, a coal powder measuring mechanism and a coal cake preparing mechanism, wherein the coal piece crushing mechanism is arranged at the upper part of the frame, the crushed coal transferring mechanism is arranged below the coal piece crushing mechanism and comprises a transferring table rotatably arranged on the frame and a transferring unit for driving the transferring table to rotate in a horizontal plane, a conveying groove is formed in the top of the transferring table, and the bottom of the conveying groove is an inclined surface; the coal briquette crushing mechanism comprises a crushing box, a left crushing wheel, a right crushing wheel, a left fine crushing wheel and a right fine crushing wheel are rotatably arranged in the crushing box, the left and right crushing wheels are positioned above the left and right fine crushing wheels, and a driving unit for driving the left and right crushing wheels and the left and right fine crushing wheels to rotate is arranged on the crushing box; the bottom of the crushing box is provided with a quantitative cylinder, a quantitative wheel is rotatably arranged in the inner cavity of the quantitative cylinder, a quantitative groove is arranged on the circular outer wall of the quantitative wheel, and an unloading motor for driving the quantitative wheel to rotate is arranged on the quantitative cylinder;
the pulverized coal preparation mechanism comprises a guide rail fixed in a frame, a moving block arranged on the guide rail in a sliding manner, a translation unit for driving the moving block to reciprocate, a wheel frame arranged below the moving block, a compression spring arranged between the wheel frame and the moving block, a grinding wheel rotatably arranged on the wheel frame, and a base arranged below the grinding wheel, wherein the base is positioned below the transfer table, and a grinding surface in contact fit with the grinding wheel is arranged on the base;
a first electric telescopic rod is fixed at the rear side of the base, a pulverized coal pushing brush is fixed on the first electric telescopic rod, a front scraping plate, a rear scraping plate and a brush head which are sequentially arranged from front to back are arranged on the pulverized coal pushing brush, and sweeping bristles are arranged on the brush head;
The pulverized coal measuring mechanism comprises a measuring box fixed at the front side of the base, a distributor and a storage, wherein the distributor is arranged in the measuring box, a first storage cavity and a second storage cavity are arranged on the storage, the distributor is of an inverted V-shaped structure, the first storage cavity and the second storage cavity are positioned below the distributor, a first stripper plate is arranged at the bottom of the first storage cavity, a second stripper plate is arranged at the bottom of the second storage cavity, and a second electric telescopic rod for driving the first stripper plate to move and a third electric telescopic rod for driving the second stripper plate to move are arranged on the storage; a receiving block is arranged below the measuring box, and a blanking pipe is arranged at the lower part of the receiving block; the pulverized coal continuously slides downwards along two inclined planes of the distributor after falling on the distributor, the pulverized coal on one inclined plane falls into the first storage cavity, and the pulverized coal on the other inclined plane falls into the second storage cavity; an inlet is arranged on the side surface of the measuring box, the relative positions of the inlet and the distributor are different, and the volumes of the pulverized coal falling into the first storage cavity and the second storage cavity are different;
The briquette preparation mechanism comprises a sliding seat, a fourth electric telescopic rod, a lower die, a pressing oil cylinder and an upper die, wherein the sliding seat is arranged on the frame in a sliding manner, the fourth electric telescopic rod drives the sliding seat, the lower die is arranged on the sliding seat, the pressing oil cylinder is fixedly connected with the frame, and the upper die is arranged on a piston rod of the pressing oil cylinder;
The front scrapers are arranged in a row and distributed at equal intervals, the rear scrapers are also arranged in a row and distributed at equal intervals, and the rear scrapers correspond to gaps between two connected front scrapers; the two sides of the wheel frame are respectively provided with a bracket, the lower part of the bracket is fixedly provided with a pulverized coal erasing brush contacted with the circular outer wall of the grinding wheel, and the pulverized coal erasing brush is provided with erasing bristles and an erasing plate which are arranged up and down; a cooling pipe filled with cooling water is arranged in the base.
2. The device for preparing a coal sample for coal quality detection and analysis for a power plant according to claim 1, wherein the driving unit comprises a pulverizing motor fixed on a pulverizing box, a driving gear fixed on an output shaft of the pulverizing motor, a left driven gear and a left driving sprocket coaxially arranged with a left pulverizing wheel, a right driven gear and a right driving sprocket coaxially arranged with a right pulverizing wheel, a left driven sprocket coaxially arranged with a left fine pulverizing wheel, a right driven sprocket coaxially arranged with a right fine pulverizing wheel, a transition gear arranged between the driving gear and the right driven gear, and a chain arranged between the left driving sprocket and the left driven sprocket and between the right driving sprocket and the right driven sprocket.
3. The device for preparing a coal sample for coal quality detection and analysis for a power plant according to claim 1, wherein a stop block is arranged on the inner wall of the quantitative cylinder in a left-right manner, the upper surface of the stop block is an inclined surface, and an arc surface which is in contact with the quantitative wheel is arranged on the stop block.
4. The device for preparing the coal sample for the coal quality detection and analysis for the power plant according to claim 1, wherein a plurality of cutting knives are arranged on the circular outer wall of the left crushing wheel, a radial rod is arranged on the circular outer wall of the right crushing wheel, and a conical drilling knife is arranged on the radial rod; the outer walls of the left fine crushing wheel and the right fine crushing wheel are provided with fine crushing teeth.
5. The device for preparing the coal sample for the coal quality detection analysis of the power plant according to claim 1, wherein the translation unit comprises a translation motor fixed on a guide rail, a translation gear arranged at the output end of the translation motor, and a rack slidably mounted on the guide rail, wherein the rack is meshed with the translation gear and fixedly connected with a moving block.
6. The device for preparing the coal sample for the coal quality detection and analysis of the power plant according to claim 1, wherein the lower die comprises a circular arc-shaped fixed die body fixed in the inner cavity of the sliding seat and a circular arc-shaped movable die body movably arranged in the inner cavity of the sliding seat, a round block is arranged at the lower part of the inner side of the movable die body, and the movable die body and the fixed die body form a whole circle.
7. The apparatus for preparing a coal sample for coal quality detection and analysis for a power plant according to claim 1, wherein the transfer unit comprises a vertical shaft fixedly connected with the transfer table, a driven bevel gear fixed on the vertical shaft, a crank rotatably mounted on the frame, and a drive bevel gear fixed on the crank and meshed with the driven bevel gear.
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