Coal as fired sampling device

Abstract

The invention relates to the technical field of coal sampling, in particular to a coal as fired sampling device which comprises a coal as fired belt conveying structure used for conveying coal and a rack arranged on the upper middle section of the coal as fired belt conveying structure in a crossing mode. A box body for collecting a coal sample is arranged in the swing direction of the sampling head and on the side part of the as-fired coal belt conveying structure; a filtering mechanism; and a vibration mechanism. After sampled and collected coal briquettes are scraped into the inner cavity of the box body through the sampling head, the crushing assembly is used for crushing the coal briquettes, the filtering mechanism is used for filtering and screening impurities, meanwhile, the vibrating mechanism drives the filtering mechanism to shake, pulverized coal is shaken off through vibration, the screening speed is increased, equipment blockage is avoided, and the screening efficiency is improved. The pulverized coal particle size uniformity is ensured, and the pulverized coal can be filtered in a classified manner, so that the granularity of the pulverized coal is accurately controlled, and higher accuracy is provided for subsequent coal analysis.

Description

Technical Field

[0001] The present invention relates to the technical field of coal sampling, and particularly to a coal sampling device for coal entering the furnace. Background Art

[0002] The coal entering the furnace is the coal containing total moisture that enters the coal bunker of the boiler house. If the moisture of the coal entering the furnace is too large, it can reduce the temperature of the vertical flue. If the temperature is too low, the coke shrinkage is not good and it is not mature. At this time, if pushing the coke, it is easy to cause difficulties in pushing the coke and even damage the furnace body. If we want the coke to mature on time, we have to increase the amount of return gas for combustion, increasing the heat consumption and the usage amount of the return gas. Therefore, before the coal entering the furnace is used, it is necessary to sample and detect the coal entering the furnace.

[0003] Currently, in the existing coal sampling equipment, it is usually necessary to crush the coal blocks and then obtain the required particle size range through means such as screening. This process needs to be completed by efficient and stable equipment to ensure that the particle size of the pulverized coal is uniform and meets the experimental requirements. However, the traditional crushing, screening and filtering technologies have certain defects. For example, the large coal blocks after crushing are also prone to pile up and are easy to cause blockage.

[0004] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0005] The purpose of the present invention is to solve the above deficiencies and provide a coal sampling device for coal entering the furnace.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: A coal sampling device for coal entering the furnace, including a coal conveying belt conveying structure for conveying coal, a frame straddling the middle section of the coal conveying belt conveying structure for coal entering the furnace, a sampling head swingably arranged on the frame, the direction of swing of the sampling head facing and on the side of the coal conveying belt conveying structure for coal entering the furnace, for pushing the coal sample out from the side of the coal conveying belt conveying structure for coal entering the furnace, and a box body for collecting the coal sample is arranged on the side of the coal conveying belt conveying structure for coal entering the furnace, and further includes:

[0007] A crushing assembly, arranged in the upper section of the inner cavity of the box body, for crushing the large coal samples scraped in through the sampling head;

[0008] A filtering mechanism, including a fixed frame arranged in the box body, a first filter plate and a second filter plate stacked up and down and arranged in the fixed frame. By moving the second filter plate, the sieve holes on the second filter plate can be misaligned and overlapped with the sieve holes on the first filter plate;

[0009] The vibration mechanism includes a support frame arranged on the lower side of the fixed frame, and a vibration component arranged on the support frame and used for vibrating the first filter plate and the second filter plate of the combination up and down following the movement of the crushing component.

[0010] Further, the crushing component includes two relatively rotating crushing rollers, two first transmission gears that are meshed with each other are arranged at the outer ends of the central shafts of the two crushing rollers, and a motor is arranged at the end of the central shaft of one side of the crushing roller.

[0011] Further, the vibration component includes a chassis arranged at the bottom of the fixed frame and distributed along its width direction, a cam column arranged on one side of the support frame and in contact with the bottom of the chassis for vibrating up and down, a rotating rod is arranged through the end of the cam column and is rotatably connected in the support frame, and springs connected to the fixed frame are respectively arranged at the four corners of the support frame.

[0012] Further, a linkage unit is arranged at one end of the rotating rod and is used for synchronously moving with one side of the crushing roller;

[0013] The linkage unit includes a first pulley sleeved at one end of the rotating rod and a second pulley arranged at the central shaft of the end of one side of the crushing roller, a transmission belt is wound around the first pulley and the second pulley, a tensioning pulley is arranged on the transmission belt between the first pulley and the second pulley, a slider is movably arranged on one side of the corresponding box body of the tensioning pulley, and a second sliding rod is arranged through the end of the slider;

[0014] The second sliding rod is arranged on the corresponding wall surface in the box body.

[0015] Further, an open mouth for discharging materials is arranged on one side of the fixed frame, a notch is arranged on one side of the box body corresponding to the open mouth, and a shutter component for controlling opening and closing is arranged on the notch;

[0016] The shutter component includes a shutter vertically moving in the notch, screw rods and guide rods symmetrically arranged on the shutter and adapted to be installed in the slots, racks are arranged on the inner sides of both ends of the shutter, gears are meshed with the racks, and rotating shafts fixed at both ends of the fixed frame are arranged through the gears.

[0017] Further, the filtering mechanism further includes an electric telescopic rod arranged at the end of the second filter plate, and a reciprocating motion unit is arranged at the outer end of the electric telescopic rod and is used for reciprocatingly driving the second filter plate to move under the first filter plate;

[0018] The reciprocating motion unit includes a first slide bar that is guided to move under the first filter plate and is fixed to the electric telescopic rod, and a cylindrical rack provided on the first slide bar. Two half gears are relatively engaged on both sides of the cylindrical rack, and the half tooth directions on the two half gears are opposite. A second transmission gear is coaxially arranged on each of the two half gears, and a third transmission gear is engaged between the two second transmission gears.

[0019] Further, an outer channel communicating with the lower cavity in the box body is communicatively provided outside the notch.

[0020] Further, an inclined discharge plate is provided in the inner cavity of the box body between the lower inlet of the outer channel and the vibration mechanism. An outlet is opened on the corresponding end face of the box body at the inclined lower end of the discharge plate.

[0021] Further, a diversion section is provided at the upper part of the box body;

[0022] An inclined surface is provided at the upper part of the diversion section; the inclined surface is arranged on the swinging path of the sampling head and is used to guide the coal samples scraped by the sampling head into the box body.

[0023] Further, an exhaust duct is communicatively provided on one side inside and outside the box body, and a fan for collecting coal dust is provided at the outer end of the exhaust duct.

[0024] Compared with the prior art, the present invention has the following beneficial effects: After the coal blocks collected by sampling are scraped into the inner cavity of the box body through the sampling head, the present invention uses the crushing assembly to crush the coal blocks, and uses the filtering mechanism to filter and screen impurities. At the same time, the vibration mechanism drives the filtering mechanism to shake, and the crushed coal powder is shaken off through vibration. On the one hand, it avoids the blockage caused by the accumulation of coal powder, and on the other hand, it speeds up the screening and filtering process of the coal powder; The first filter plate and the second filter plate included in the filtering mechanism can perform hierarchical filtering on the coal powder, so as to accurately control the particle size of the coal powder, providing higher accuracy for subsequent coal analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0026] Figure 1 It is a three-dimensional structure diagram of a perspective of the whole interior of an embodiment of the present invention;

[0027] Figure 2 It is a three-dimensional structure diagram of a perspective of the combination of the crushing assembly, the filtering mechanism, and the vibration mechanism of an embodiment of the present invention;

[0028] Figure 3 A perspective three-dimensional structure diagram of the combination of the crushing component, filtering mechanism, and vibration mechanism according to an embodiment of the present invention;

[0029] Figure 4 A perspective three-dimensional structure diagram of the combination of the crushing component, filtering mechanism, and vibration mechanism according to a third perspective of an embodiment of the present invention;

[0030] Figure 5 A perspective three-dimensional structure diagram of the filtering mechanism according to an embodiment of the present invention;

[0031] Figure 6 A schematic structural diagram of the reciprocating motion unit installed on the first filter plate according to an embodiment of the present invention;

[0032] Figure 7 A schematic structural diagram of the rack and gear meshed and connected according to an embodiment of the present invention.

[0033] In the figure: 100, the in-furnace coal belt conveying structure; 1, the frame; 2, the sampling head; 3, the box body; 31, the diversion section; 4, the crushing component; 41, the crushing roller; 42, the first driving gear; 5, the filtering mechanism; 51, the fixed frame; 52, the first filter plate; 53, the second filter plate; 54, the electric telescopic rod; 55, the reciprocating motion unit; 551, the first sliding rod; 552, the cylindrical rack; 553, the half gear; 554, the second driving gear; 555, the third driving gear; 6, the vibration mechanism; 61, the support frame; 62, the vibration component; 621, the bottom frame; 622, the cam column; 623, the rotating rod; 624, the spring; 7, the linkage unit; 71, the first pulley; 72, the second pulley; 73, the transmission belt; 74, the tensioning pulley; 75, the slider; 76, the second sliding rod; 8, the baffle component; 81, the baffle; 82, the lead screw; 83, the guide rod; 84, the rack; 85, the gear; 9, the outer channel; 10, the discharge plate; 11, the exhaust duct. Detailed implementation manners

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Without conflict, the embodiments and features in the present application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0035] As Figure 1-7As shown in the figure, the in-furnace coal sampling device of the present invention includes an in-furnace coal belt conveying structure 100 for conveying coal, a frame 1 straddling the middle section of the in-furnace coal belt conveying structure 100, a sampling head 2 swingably arranged on the frame 1, the orientation of the swing direction of the sampling head 2 and on the side of the in-furnace coal belt conveying structure 100, for pushing the coal sample out from the side of the in-furnace coal belt conveying structure 100, and a box body 3 for collecting the coal sample is arranged on the side of the in-furnace coal belt conveying structure 100. It further includes:

[0036] A crushing component 4, arranged in the upper section of the inner cavity of the box body 3, for crushing large coal samples scraped in through the sampling head 2;

[0037] A filtering mechanism 5, including a fixed frame 51 arranged in the box body 3, a first filter plate 52 and a second filter plate 53 stacked up and down and arranged in the fixed frame 51. By moving the second filter plate 53, the sieve holes on the second filter plate 53 can be misaligned and overlapped with the sieve holes on the first filter plate 52;

[0038] A vibration mechanism 6, including a support frame 61 arranged on the lower side of the fixed frame 51, and a vibration component 62 arranged on the support frame 61 and used to vibrate the combined first filter plate 52 and the second filter plate 53 up and down following the movement of the crushing component 4.

[0039] In specific implementation, through the frame 1 arranged in the middle section of the in-furnace coal belt conveying structure 100 and the sampling head 2 swingably installed on the frame 1, coal samples can be regularly collected and scraped into the box body 3 in the conveyed coal flow. In the inner cavity of the box body 3, through the crushing component 4 installed on its upper side, large coal samples are crushed, making the particles in the coal sample more uniform, reducing the difference between particles, ensuring the representativeness and uniformity of the sample, and through crushing, the original coal particle structure can be broken, ensuring that the sample can better reflect the overall properties of the coal pile;

[0040] The pulverized coal particles after crushing will fall on the first filter plate 52, and under the action of the vibration component 62 included in the support frame 61, the bottom of the second filter plate 53 combined on the first filter plate 52 is driven to shake, so that the pulverized coal after crushing is shaken off through the vibration effect, effectively avoiding blockage caused by the accumulation of pulverized coal, and at the same time accelerating the screening and filtering process;

[0041] Among them, the first filter plate 52 and the second filter plate 53 which are installed up and down and stacked in combination on the fixed frame 51. Since the second filter plate 53 moves along its length direction under the first filter plate 52, the sieve holes machined on the first filter plate 52 and the second filter plate 53 can be misaligned and overlapped, and the particle size of the pulverized coal can be accurately controlled during the whole sampling process, providing higher accuracy for subsequent coal analysis.

[0042] In one embodiment, the crushing assembly 4 includes two relatively rotating crushing rollers 41. Two first transmission gears 42 that mesh with each other are arranged at the outer ends of the central shafts of the two crushing rollers 41. A motor is arranged at the end of the central shaft of one of the crushing rollers 41. With such a design, by installing two crushing rollers 41 on the upper side of the inner cavity of the box body 3, and the crushing teeth on the outer walls of the two crushing rollers 41 biting each other, the force for crushing large pieces of coal is increased;

[0043] Two first transmission gears 42 are also sleeved on the outer ends of the central shafts at the ends of the two crushing rollers 41 respectively. Under the driving action of the motor installed at the end of one of the crushing rollers 41 using a coupling, through the two meshing first transmission gears 42, the two relatively installed crushing rollers 41 rotate towards each other, which is more conducive to the crushing operation of large pieces of coal.

[0044] In one embodiment, the vibration assembly 62 includes a chassis 621 arranged at the bottom of the fixed frame 51 along its width direction, and a cam column 622 arranged on one side of the support frame 61 and in vertical vibration contact with the bottom of the chassis 621. A rotating rod 623 rotatably connected in the support frame 61 is penetrated through the end of the cam column 622. Springs 624 connected to the fixed frame 51 are correspondingly arranged at the four corners of the support frame 61. With such a design, by welding a chassis 621 on one side of the bottom of the fixed frame 51, and slidingly installing the other end of the chassis 621 at the bottom of the second filter plate 53, and also installing a cam column 622 in contact with the bottom of the chassis 621 and a rotating rod 623 fixedly penetrated through the end of the cam column 622, when the rotating rod 623 is subjected to an external force, it will drive the rotating rod 623 and the cam column 622 sleeved on the rotating rod 623 to rotate. Coupled with the springs 624 installed at the four corners of the support frame 61 and correspondingly connected to the fixed frame 51 and their elastic effects, the cam column 622 drives the relevant structures on the filtering mechanism 5 connected to the chassis 621 to shake, achieving the effect of vibrating the pulverized coal.

[0045] In one embodiment, a linkage unit 7 is arranged at one end of the rotating rod 623 and moves synchronously with one of the crushing rollers 41;

[0046] The linkage unit 7 includes a first pulley 71 sleeved on one end of the rotating rod 623 and a second pulley 72 arranged on the central shaft at the end of one of the crushing rollers 41. A transmission belt 73 is wound around the first pulley 71 and the second pulley 72. A tension pulley 74 is arranged between the first pulley 71 and the second pulley 72 on the transmission belt 73. A slider 75 is movably arranged on one side of the box body 3 corresponding to the tension pulley 74. A second sliding rod 76 is penetrated through the end of the slider 75;

[0047] The second slide bar 76 is arranged on the corresponding wall surface in the box body 3. With this design, through the first pulley 71 sleeved on one end of the rotating rod 623 and the second pulley 72 sleeved on the central axis of the end of the crushing roller 41 on one side, the first pulley 71 and the second pulley 72 connected by the transmission belt 73 can transmit the rotation force of the crushing roller 41 to the rotating rod 623, drive the rotating rod 623 to rotate, and drive the first filter plate 52 and the second filter plate 53 to shake while crushing large pieces of coal, so as to shake off the coal powder in the sieve holes through vibration;

[0048] There is also a tensioning wheel 74 installed between the first pulley 71 and the second pulley 72 and wrapped around the second pulley 72. Since the tensioning wheel 74 is welded and installed with the slider 75, and the slider 75 and the second slide rod 76 slide relatively, the subsequent non-interference movement of the flipping filtering mechanism 5 and the vibration mechanism 6 is achieved.

[0049] It should be noted that both ends of the second sliding rod 76 are welded and mounted on the inner wall of the box body 3 .

[0050] In one embodiment, an opening for unloading is provided on one side of the fixing frame 51, and a notch is provided on one side of the box body 3 corresponding to the opening, and a shield assembly 8 for controlling opening and closing is provided on the notch;

[0051] The baffle assembly 8 includes a baffle 81 that moves vertically in the groove, a screw rod 82 and a guide rod 83 that are symmetrically arranged on the baffle 81 and slotted and adapted for installation, and racks 84 are provided on the inner sides of both ends of the baffle 81. A gear 85 is meshed on the rack 84, and a rotating shaft fixed to the two ends of the fixed frame 51 is passed through the gear 85. In this design, by machining an opening on one side of the fixed frame 51 and a groove machined on the wall of the box body 3 on the corresponding side of the opening, after turning off the motor power of the crushing assembly 4 installed in the box body 3, the baffle 81 installed in the groove will be driven by the rotation of the screw rod 82 installed in the groove and adapted thereto, and the baffle 81 will move linearly under the limitation of the guide rod 83 installed in the groove and sliding on the other side thereof, thereby realizing the opening and closing of the groove. At the same time, the racks 84 welded at both ends of the baffle 81 and the gear 85 meshingly connected to the rack 84 can synchronously drive the filter mechanism 5 to flip upward and at a certain inclination angle under the transmission of the above-mentioned structure, so that the coal powder particles that have not passed through the sieve hole are discharged through the groove.

[0052] It should be noted that a corresponding motor is installed on the screw rod 82 to drive the screw rod 82 to rotate.

[0053] In one embodiment, the filtering mechanism 5 further includes an electric telescopic rod 54 disposed at the end of the second filter plate 53, and a reciprocating motion unit 55 for reciprocatingly driving the second filter plate 53 to move under the first filter plate 52 is disposed at the outer end of the electric telescopic rod 54;

[0054] The reciprocating motion unit 55 includes a first sliding rod 551 that is guided to move under the first filter plate 52 and is fixed to the electric telescopic rod 54, and a cylindrical rack 552 disposed on the first sliding rod 551. Two half gears 553 are relatively meshed on both sides of the cylindrical rack 552, and the half tooth directions of the two half gears 553 are opposite. Second transmission gears 554 are coaxially disposed on both of the two half gears 553, and a third transmission gear 555 is meshed between the two second transmission gears 554. With such a design, by means of the electric telescopic rod 54 installed at one end of the second filter plate 53 and utilizing the horizontal telescopic structure of the electric telescopic rod 54, the second filter plate 53 slides horizontally under the first filter plate 52, realizing the misaligned overlap of the sieve holes on the second filter plate 53 and the first filter plate 52, precisely controlling the particle size of the pulverized coal, and providing higher accuracy for subsequent coal analysis;

[0055] The first sliding rod 551 fixed to the fixed end of the electric telescopic rod 54 and the cylindrical rack 552 installed on the first sliding rod 551 are also provided. Through the cylindrical rack 552 and the two half gears 553 relatively meshed on both sides thereof, when an external force acts on one side half gear 553, on the one hand, it will drive the first sliding rod 551, the electric telescopic rod 54 fixed to the end of the first sliding rod 551, and the second filter plate 53 to move to one side under the first filter plate 52 under the meshing action of the side half gear 553 and the cylindrical rack 552. On the other hand, under the meshing action of the second transmission gear 554 coaxially installed on the side half gear 553, the third transmission gear 555 adjacent thereto, and the second transmission gear 554 installed on the opposite side, the acting force is transmitted to drive the half gear 553 installed on the other side to rotate. Since the half tooth directions of the half gears 553 distributed on both sides are opposite, the reciprocating linear motion of the first sliding rod 551 is realized, such that during the later process of discharging large particle impurities by flipping the filtering mechanism 5, the impurities and pulverized coal particle components on the sieve holes are synchronously cleaned by the reciprocating motion contact of the second filter plate 53 on the lower surface of the first filter plate 52.

[0056] It should be noted that a motor adapted to be used is installed on the central axis of the end of one side half gear 553;

[0057] It should be noted that cleaning surfaces are installed on the end faces close to each other on the second filter plate 53 and the first filter plate 52.

[0058] In one embodiment, the outside of the slot is connected to an external channel 9 connected to the lower cavity in the box body 3. In this design, the large-particle coal powder discharged enters the bottom of the box body 3 and is processed centrally through the external channel 9 connected to the lower cavity in the box body 3 installed outside the slot.

[0059] It should be noted that the bottom cover installed at the bottom of the box body 3 adopts a detachable installation structure.

[0060] In one embodiment, an inclined discharging plate 10 is provided in the inner cavity of the box body 3 and between the lower inlet of the outer channel 9 and the vibration mechanism 6, and a discharging port is provided at the inclined lower end of the discharging plate 10 and the corresponding end surface on the box body 3. With this design, the coal powder particles after crushing, refining, filtering and screening can be smoothly discharged through the discharging plate 10 installed obliquely in the inner cavity of the box body 3 and the discharging port corresponding to the turning process at the inclined lower end of the discharging plate 10 on the box body 3.

[0061] It should be noted that a collection box for collecting coal powder particles will be placed outside the discharge port.

[0062] In one embodiment, a flow guide section 31 is provided at the upper portion of the box body 3;

[0063] The upper part of the guide section 31 is provided with an inclined surface; the inclined surface is arranged on the swing path of the sampling head 2, and is used to guide the coal sample scraped by the sampling head 2 into the box body 3. In this design, the guide section 31 is integrally formed on the upper part of the box body 3, and the upper part of the guide section 31 is provided with an inclined surface, which can play the role of splash prevention and baffle.

[0064] In one embodiment, an exhaust duct 11 is provided on one side of the box body 3 so as to communicate with the inside and outside, and a fan for collecting coal dust is provided at the outer end of the exhaust duct 11. In this design, the exhaust duct 11 is provided on one side of the box body 3 so as to communicate with the inside and outside, and the fan is provided at the outer end of the exhaust duct 11, so as to collect the coal dust scattered in the box body 3, maintain the normal operation of the equipment, and improve the cleanliness of the working environment.

[0065] 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.

[0066] It should be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0067] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, such descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, "several" means more than two. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. The in-furnace coal sampling device includes an in-furnace coal belt conveying structure (100) for conveying coal, and a frame (1) straddling the middle section of the in-furnace coal belt conveying structure (100). A sampling head (2) is swingably arranged on the frame (1). The sampling head (2) faces in the swinging direction and is located at the side of the in-furnace coal belt conveying structure (100), and is used to push the coal sample out from the side of the in-furnace coal belt conveying structure (100). A box body (3) for collecting the coal sample is arranged at the side of the in-furnace coal belt conveying structure (100), and it is characterized in that, It further includes: A crushing component (4), arranged in the upper section of the inner cavity of the box body (3), for crushing large coal samples scraped in through the sampling head (2); A filtering mechanism (5), including a fixed frame (51) erected in the box body (3), a first filter plate (52) and a second filter plate (53) stacked up and down and arranged in the fixed frame (51). By moving the second filter plate (53), the sieve holes on the second filter plate (53) can be misaligned and overlapped with the sieve holes on the first filter plate (52); A vibration mechanism (6), including a support frame (61) arranged on the lower side of the fixed frame (51), and a vibration component (62) arranged on the support frame (61) and used to vibrate the combined first filter plate (52) and second filter plate (53) up and down following the movement of the crushing component (4).

2. The coal sampling device for furnace charging according to claim 1, characterized in that: The crushing component (4) includes two relatively rotating crushing rollers (41). Two first transmission gears (42) that mesh with each other are arranged at the outer ends of the central axes of the two crushing rollers (41). A motor is arranged at the end of the central axis of one side of the crushing roller (41).

3. The coal sampling device for furnace charging according to claim 2, wherein: The vibration component (62) includes a chassis (621) arranged at the bottom of the fixed frame (51) along its width direction, a cam column (622) arranged on one side of the support frame (61) and in vertical vibration contact with the bottom of the chassis (621). A rotating rod (623) rotatably connected in the support frame (61) is penetrated through the end of the cam column (622). Springs (624) connected to the fixed frame (51) are correspondingly arranged at the four corners of the support frame (61).

4. The coal sampling device for furnace charging according to claim 3, wherein: One end of the rotating rod (623) is provided with a linkage unit (7) that moves synchronously with one side of the crushing roller (41); The linkage unit (7) includes a first pulley (71) sleeved on one end of the rotating rod (623) and a second pulley (72) arranged at the central axis of the end of one side of the crushing roller (41). A transmission belt (73) is wound around the first pulley (71) and the second pulley (72). A tension pulley (74) is arranged on the transmission belt (73) between the first pulley (71) and the second pulley (72). A slider (75) is movably arranged on one side of the box body (3) corresponding to the tension pulley (74). A second sliding rod (76) is penetrated through the end of the slider (75); The second sliding rod (76) is arranged on the corresponding wall surface in the box body (3).

5. The coal sampling device for furnace charging according to claim 1, characterized in that: An open mouth for discharging materials is arranged on one side of the fixed frame (51). A notch is arranged on one side of the box body (3) corresponding to the open mouth. A shutter component (8) for controlling opening and closing is arranged on the notch; The baffle assembly (8) includes a baffle (81) vertically moving in the notch, screw rods (82) symmetrically arranged on the baffle (81) and adapted to be installed with slots, and guide rods (83). On both inner sides of the two ends of the baffle (81), racks (84) are provided. Gears (85) are engaged with the racks (84). Rotating shafts fixed at both ends of the fixed frame (51) are penetrated through the gears (85).

6. The coal sampling device for furnace charging according to claim 1, characterized in that: The filtering mechanism (5) further includes an electric telescopic rod (54) arranged at the end of the second filter plate (53). At the outer end of the electric telescopic rod (54), a reciprocating motion unit (55) is provided for reciprocatingly driving the second filter plate (53) to move under the first filter plate (52). The reciprocating motion unit (55) includes a first sliding rod (551) guidingly moving under the first filter plate (52) and fixed to the electric telescopic rod (54), and a cylindrical rack (552) arranged on the first sliding rod (551). Two half gears (553) are relatively engaged on both sides of the cylindrical rack (552), and the half tooth directions of the two half gears (553) are opposite. Second transmission gears (554) are coaxially arranged on both of the two half gears (553). A third transmission gear (555) is engaged between the two second transmission gears (554).

7. The coal sampling device for furnace charging according to claim 5, characterized in that: An outer channel (9) communicating with the lower cavity inside the box body (3) is communicatively arranged outside the notch.

8. The coal sampling device for furnace charging according to claim 7, wherein: An inclined discharge plate (10) is arranged in the inner cavity of the box body (3) between the lower inlet of the outer channel (9) and the vibration mechanism (6). At the inclined lower end of the discharge plate (10), a discharge port is formed on the corresponding end face of the box body (3).

9. The coal sampling device for furnace charging according to claim 1, characterized in that: A diversion section (31) is arranged at the upper part of the box body (3). An inclined surface is provided at the upper part of the diversion section (31). The inclined surface is arranged on the swinging path of the sampling head (2) and is used for guiding the coal samples scraped by the sampling head (2) into the box body (3).

10. The coal sampling device for furnace inlet according to claim 1, characterized in that: An exhaust duct (11) is communicatively arranged on one side of the box body (3) inside and outside. A fan for collecting coal dust is arranged at the outer end of the exhaust duct (11).

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