Automatic coal blending device for low-ash coal coking

Abstract

The application relates to the field of coal coking, and discloses an automatic coal blending device for low-ash coal coking, which comprises a coal blending frame, a hopper No. 2 is arranged in the coal blending frame and used for storing low-ash coal, a pair of hoppers No. 1 are arranged on the two sides of the hopper No. 2 and used for storing conventional coal, a coal blending mechanism is arranged in the hopper No. 2 and is used for guiding the conventional coal to flow right below the hopper No. 2 and pre-mixing with the low-ash coal, the guide plate can be adjusted in the angle of inclination below the hopper No. 2, the state of conventional coal flow is changed, the driving motor drives the driving gear to drive the discharging cylinder to rotate, in the process that the discharging cylinder rotates and drives the internal mixing plate to move transversely and rotate, the low-ash coal in the discharging cylinder can be scattered, the low-ash coal is prevented from being stratified, the low-ash coal is allowed to intermittently fall, the conventional coal flowing through the guide plate is mixed in the air in advance, and the situation that the blending ratio is out of control during coal blending is reduced.

Description

Technical Field

[0001] This invention relates to the field of coal coking technology, specifically to an automated coal blending device for low-ash coal coking. Background Technology

[0002] Low-ash coal coking involves feeding coking coal with low ash content into a coke oven in a specific ratio, where it is dry-distilled and coked under high-temperature conditions in the absence of air to produce metallurgical coke. Current technology for coking low-ash coal often uses it as the main raw material, blended with a certain proportion of conventional coal. After blending, the coal is then fed into the coke oven for high-temperature dry distillation to produce metallurgical coke. However, this process still has the following drawbacks:

[0003] When blending low-ash coal and conventional coal, the ratio of low-ash coal to conventional coal is first ensured. Then, the two are mixed evenly and transported to the coke oven for high-temperature dry distillation. However, since low-ash coal has a smaller particle size than conventional coal, when low-ash coal and conventional coal are mixed, the fine particles of low-ash coal can easily pass through the gaps between conventional coal particles and slide to the bottom, forming a stratification and segregation between them and the larger conventional coal particles. Even if the ratio of the two is precisely controlled, this segregation state causes low-ash coal and conventional coal to enter the coke oven in a non-uniform state. During the high-temperature dry distillation process, this will cause an imbalance in the coal ratio in different areas of the oven, resulting in fluctuations in the ash content of coke and ultimately a decrease in the quality stability of the finished coke.

[0004] Although existing technologies use premixing equipment to premix low-ash coal and conventional coal before they fall onto the mixing roller or stirring roller, allowing the low-ash coal to mix with the conventional coal in advance so that they are already premixed when they fall to the mixing equipment for final mixing, the small particle size of the low-ash coal causes it to fall first and the conventional coal to fall later. This results in an imbalance in the ratio of the two during premixing, which directly affects the mixing effect of the subsequent stirring roller or mixing roller, ultimately failing to completely eliminate the problem of uneven mixing.

[0005] In view of this, the present invention provides an automated coal blending device for coking with low-ash coal. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an automated coal blending device for low-ash coal coking, which solves the problem that in existing technologies, low-ash coal and conventional coal are mixed using premixing equipment, but the uneven mixing is still a problem due to the small natural particle size of low-ash coal.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An automated coal blending device for low-ash coal coking includes a coal blending frame, a second hopper for storing low-ash coal is provided inside the coal blending frame, a pair of first hoppers for storing conventional coal are provided on both sides of the second hopper, and a coal blending mechanism is provided inside the second hopper.

[0009] A guide plate is rotatably connected to the bottom of a pair of hoppers 1, which is used to guide the conventional coal to the bottom of hopper 2 for premixing with low-ash coal. The guide plate can also be adjusted at its tilt angle to change the flow state of the conventional coal.

[0010] The coal blending mechanism includes a rotatable feeding cylinder inside the second hopper, and two feeding ports are opened on the outside of the feeding cylinder. The inside of the feeding cylinder is a horizontally reciprocating mixing plate, which can rotate during the movement to break up the low-ash coal.

[0011] Preferably, a flow guiding mechanism for guiding conventional coal and coordinating with the feeding of low-ash coal is provided below the hopper. The flow guiding mechanism includes a swingable pull plate, and a pair of cooperating rods are fixed below the pull plate. The outer side of the cooperating rods slides in contact with a chute plate, and the chute plate and the flow guiding plate are fixedly connected.

[0012] Preferably, the flow guiding mechanism further includes a movable plate disposed on the outside of the feed cylinder, a mating plate fixedly connected to one side of the movable plate, and the inner side of the mating plate movably engaging with the top of the pull plate. The movement of the movable plate causes the mating plate to pull the pull plate to swing.

[0013] Preferably, the coal blending mechanism further includes a drive motor fixedly connected to the coal blending frame, the output end of the drive motor is provided with a drive gear, the drive gear is meshed with the feeding cylinder, and a fixed rod is fixedly connected inside the feeding cylinder.

[0014] Preferably, a fixed gear is rotatably connected to the middle position of the fixed rod, and the fixed gear is fixedly connected to the coal distribution frame. A first engagement wheel is meshed with the outer side of the fixed gear, and a second engagement wheel is meshed with the outer side of the first engagement wheel. A driving connecting rod is rotatably connected to one side of the second engagement wheel. A driven connecting rod is rotatably connected to one end of the driving connecting rod, and a transmission rod is rotatably engaged with one end of the driven connecting rod. The first mixing plate is detachably connected to the outer side of the transmission rod.

[0015] Preferably, a splined bushing is fixedly connected to the outer side of the transmission rod, and a splined groove is engaged with the outer side of the splined bushing. The rotation of the two mating wheels drives the driven connecting rod at one end of the active connecting rod to swing, thereby driving the transmission rod to reciprocate laterally inside the splined groove, while simultaneously driving the transmission rod and its outer mixing plate to rotate inside the feed cylinder.

[0016] Preferably, a rubber septum is provided on the inner side of the feeding cylinder to prevent small-diameter low-ash coal from entering the contact position between the spline bushing and the spline groove. A deformable active block is provided on one side of the moving plate, and the active block is fixedly connected to the inner side of the feeding cylinder. A deformable flexible magnet is provided inside the active block, and a strong magnet with opposite magnetic poles to the flexible magnet is provided at the position where the moving plate and the feeding cylinder are in contact.

[0017] Preferably, an arc-shaped pusher is provided on the outer arc surface of the mixing plate to push the moving plate, causing it and the internal flexible magnet to deform and drive the moving plate to move from the inside to the outside. One side of the active block is closely attached to the inner side of the feeding cylinder and close to the feeding port.

[0018] Preferably, a mixing chamber is provided below the second hopper and the pair of first hoppers. A drive rod is provided inside the mixing chamber, and a mixing plate is provided outside the drive rod. The drive rod drives the mixing plate to swing back and forth, which is used to re-mix the low-ash coal and conventional coal after impact mixing.

[0019] Preferably, a conveying mechanism is provided below the mixing bin to convey the mixed low-ash coal and conventional coal to the next process. Both the mixing bin and the conveying mechanism are fixedly connected to the inner side of the coal distribution frame. Dust-proof gaskets are provided at the rotating parts of the guide plate and the first hopper to ensure that the guide plate can move normally below the first hopper.

[0020] This invention provides an automated coal blending device for low-ash coal coking. It has the following beneficial effects:

[0021] 1. This invention uses a drive motor to drive an active gear to rotate the feeding cylinder. Simultaneously, as the feeding cylinder rotates, it causes the internal mixing plate to move laterally and rotate, which can break up the low-ash coal inside the feeding cylinder, preventing the low-ash coal from stratifying itself. It also allows the low-ash coal to fall downwards intermittently, mixing with the conventional coal flowing from the guide plate in the air in advance, preventing fine low-ash coal particles from leaking down through the gaps in the conventional coal, and reducing the possibility of imbalance in the coal blending ratio.

[0022] 2. This invention uses a mixing plate and an active extrusion block to move a moving plate. Simultaneously, as the moving plate moves the pull plate and the connecting rod to change the tilt angle of the guide plate, it can adjust the flow state of conventional coal in accordance with the feeding time of low-ash coal. When the low-ash coal is about to fall, the conventional coal flows quickly to the confluence position. When the low-ash coal is not being fed, the conventional coal flows slowly and evenly, reducing the problems of coal agglomeration and segregation, making the coal entering the coke oven more uniformly mixed, and improving the quality of the finished coke after coking. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a schematic diagram of hopper one and hopper two of the present invention;

[0025] Figure 3 This is a schematic diagram of the coal blending mechanism of the present invention;

[0026] Figure 4 This is a schematic diagram of the first mating wheel and the second mating wheel of the present invention;

[0027] Figure 5 This is an exploded view of the coal blending mechanism of the present invention;

[0028] Figure 6 This is a side view schematic diagram of the coal blending mechanism of the present invention;

[0029] Figure 7 For the present invention Figure 6 Side view principle state diagram;

[0030] Figure 8 This is a schematic diagram of the flow guiding mechanism of the present invention;

[0031] Figure 9 This is a side view schematic diagram of the flow guiding mechanism of the present invention.

[0032] The components are as follows: 1. Hopper 1; 2. Hopper 2; 3. Coal blending mechanism; 301. Drive motor; 302. Drive gear; 303. Feeding cylinder; 304. Fixed gear; 305. Fixed rod; 306. Matching wheel 1; 307. Matching wheel 2; 308. Drive connecting rod; 309. Driven connecting rod; 310. Splined bushing; 311. Transmission rod; 312. Splined chute; 313. Mixing plate 1; 4. Mixing bin; 5. Conveying mechanism; 6. Guide mechanism; 601. Drive block; 602. Moving plate; 603. Pulling plate; 604. Matching plate; 605. Matching rod; 606. Slide plate; 607. Flexible magnet; 7. Coal blending frame; 8. Guide plate; 9. Mixing plate 2; 10. Drive rod. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1 to 6As shown, the present invention provides an automated coal blending device for low-ash coal coking, including a coal blending frame 7, a hopper 2 inside the coal blending frame 7 for storing low-ash coal, a pair of hoppers 1 on both sides of the hopper 2 for storing conventional coal, and a coal blending mechanism 3 inside the hopper 2.

[0035] A guide plate 8 is rotatably connected to the bottom of a pair of hoppers 1 to guide conventional coal to the bottom of hopper 2 for premixing with low-ash coal. The guide plate 8 can be adjusted at its tilt angle below hopper 1 to change the flow state of conventional coal.

[0036] The coal blending mechanism 3 includes a rotatable feeding cylinder 303 inside the hopper 2, and two feeding ports are opened on the outside of the feeding cylinder 303. The feeding cylinder 303 is equipped with a horizontally reciprocating mixing plate 313, which can rotate during the movement to break up the low-ash coal.

[0037] Please see Figures 1 to 6 As shown, this invention takes into account that, in the prior art, although the proportions of low-ash coal and conventional coal can be precisely controlled during coal coking to ensure that the final coking amount in the coke oven meets the standards during high-temperature dry distillation, if the low-ash coal and conventional coal entering the coke oven are not in a uniform state during high-temperature dry distillation, but rather in a clump-like or stratified state, it is very easy for the low-ash coal and conventional coal to exhibit uneven local ash distribution, insufficient fusion of plastic bodies, and inconsistent local coking reaction during the high-temperature dry distillation and coking process. This results in insufficient local coke strength, increased cracks, polarization of lump size, excessive ash content in some areas of coke, and decreased abrasion resistance in some areas of coke, thus affecting the effect and quality of coking using low-ash coal as the main raw material.

[0038] To avoid the above situation, a coal blending mechanism 3 is set below hopper 2. The rotatable feed cylinder 303 in the coal blending mechanism 3 drives the low-ash coal to rotate synchronously. After the feed cylinder 303 rotates 180°, the low-ash coal inside can fall downwards. Before the low-ash coal falls through the feed port opened on the outside of the feed cylinder 303, some of the conventional coal inside hopper 1 on both sides of hopper 22 will flow through the guide plate 8 to the bottom of hopper 22. After the low-ash coal falls, it will fall directly onto the conventional coal with larger particle size, thereby achieving pre-mixing. This avoids the situation where the low-ash coal falls first and then the conventional coal falls, resulting in the low-ash coal being at the bottom layer and unable to be fully mixed.

[0039] It needs to be explained that when the feed cylinder 303 rotates 180° and drives the low-ash coal to rotate synchronously, intermittently feeding it into the lower part to mix with the conventional coal, the reciprocating motion of the mixing plate 313 inside the feed cylinder 303 further disperses the low-ash coal. This prevents the low-ash coal from being stratified into larger particles on top and smaller particles on the bottom as soon as it is fed into the hopper 2. When the feed inlets on the outside of the feed cylinder 303 are tightly fitted to the inner wall of the hopper 2, the guide plate 8 changes its tilt angle below the hopper 1, becoming more inclined. At this time, the conventional coal, which is always in a flowing state, will accelerate its flow, allowing the low-ash coal to flow to the bottom of the hopper 2 first. This allows the conventional coal and the low-ash coal to be fully mixed, improving their uniformity. Whether it is subsequently stirred and mixed again or transported to the coke oven for high-temperature dry distillation, the uniformity of the low-ash coal and the conventional coal can be guaranteed, thereby improving the effect and quality of coal coking.

[0040] In one specific embodiment, a flow guiding mechanism 6 is provided below the hopper 1 for guiding conventional coal and coordinating the feeding of low-ash coal. The flow guiding mechanism 6 includes a swingable pull plate 603, and a pair of cooperating rods 605 are fixed below the pull plate 603. The outer side of the cooperating rods 605 slides in contact with a chute plate 606, and the chute plate 606 is fixedly connected to the flow guiding plate 8.

[0041] Please see Figures 6 to 9 As shown, before the discharge port of the lower cylinder 303 rotates to directly below the second hopper 2, the pull plate 603 will swing at a certain angle, causing a pair of cooperating rods 605 to swing. When the cooperating rods 605 swing, they will slide in the inclined groove opened inside the chute plate 606. The greater the angle of swing of the cooperating rods 605, the greater the squeezing force of the cooperating rods 605 on the chute plate 606, which will push the guide plate 8 below the chute plate 606 to a greater angle of inclination below the second hopper 2, so that the conventional coal can flow quickly to directly below the second hopper 2 and mix with the low-ash coal.

[0042] It needs to be explained that, because conventional coal is always in a flowing state inside the guide plate 8, even if the tilt angle of the guide plate 8 is not changed, the guide plate 8 will still... Figure 6 and Figure 7 As shown in the diagram, it is in an inclined state, but the inclination angle is small. When the guide plate 8 changes from a relatively gentle state to a state with a larger inclination angle, the conventional coal flowing inside it will flow to the position of hopper 2 with acceleration, and impact the vertically falling low-ash coal, which can better improve the mixing effect of the two, thereby improving the coal blending effect.

[0043] In one specific embodiment, the flow guiding mechanism 6 further includes a movable plate 602 disposed on the outside of the feed cylinder 303. A mating plate 604 is fixedly connected to one side of the movable plate 602. The inner side of the mating plate 604 is movably engaged above the pull plate 603. The movement of the movable plate 602 drives the mating plate 604 to pull the pull plate 603 to swing.

[0044] Please see Figure 8 and Figure 9 As shown, when the feed cylinder 303 rotates inside the hopper 2, and the feed outlet of the feed cylinder 303 is about to change to a vertical state, the moving plate 602 will move a distance from the inside to the outside, causing the cooperating plate 604 to move synchronously. The cooperating plate 604 will pull the pull plate 603 to swing. Through a pair of cooperating rods 605 below the pull plate 603, the guide plate 8 will be driven to change its angle in advance below the hopper 2. This allows the guide plate 8 to guide the conventional coal at high speed to the bottom of the hopper 2 before the low ash coal falls, preparing to mix with the low ash coal that is about to fall. This can effectively improve the mixing effect of low ash coal and conventional coal.

[0045] It needs to be explained that when the current feed cylinder 303 rotates, causing the low-ash coal to intermittently fall directly below hopper 2 and mix with conventional coal, the conventional coal initially flows slowly inside the guide plate 8 as it guides the conventional coal. When it falls from hopper 1 into the guide plate 8, it no longer flows in streams but spreads evenly inside the guide plate 8. This is because the slow-flowing low-ash coal on the surface of the guide plate 8 creates some resistance, making it spread more evenly. When the guide plate 8 changes from a flat state to a more inclined state, the conventional coal spread inside accelerates and flows directly below hopper 2. At this time, the low-ash coal also flows out evenly from below hopper 2 under the action of mixing plate 313, allowing the conventional coal to mix better with the low-ash coal, further improving the mixing effect and the overall quality of the coal blend.

[0046] In one specific embodiment, the coal blending mechanism 3 also includes a drive motor 301 fixedly connected to the coal blending frame 7. The output end of the drive motor 301 is provided with a drive gear 302. The drive gear 302 and the feed cylinder 303 are meshed and driven. A fixing rod 305 is fixedly connected inside the feed cylinder 303.

[0047] Please see Figures 3 to 5As shown, when it is necessary to uniformly mix a certain amount of low-ash coal and conventional coal to ensure the ratio of the two entering the coke oven for high-temperature dry distillation, the drive motor 301 is first started to drive the drive gear 302 to rotate. The rotation of the drive gear 302 meshes and drives the feed cylinder 303 to rotate inside the hopper 2. This causes the feed cylinder 303 to rotate at a low speed, allowing the low-ash coal to fall into the hopper 2 at a later time and intermittently. This can fully improve the mixing effect of the two and avoid the situation where the low-ash coal falls faster than the conventional coal during the mixing and falling process, resulting in stratification.

[0048] In one specific embodiment, a fixed gear 304 is rotatably connected to the middle position of the fixed rod 305, and the fixed gear 304 is fixedly connected to the coal feeding frame 7. A first mating wheel 306 is meshed with the outer side of the fixed gear 304, and a second mating wheel 307 is meshed with the outer side of the first mating wheel 306. An active connecting rod 308 is rotatably connected to one side of the second mating wheel 307. A driven connecting rod 309 is rotatably connected to one end of the active connecting rod 308, and a transmission rod 311 is rotatably engaged at one end of the driven connecting rod 309. A first mixing plate 313 is detachably connected to the outer side of the transmission rod 311.

[0049] Please continue reading. Figures 3 to 5As shown, in order to ensure that the mixing plate 313 uniformly feeds the low-ash coal driven by the rotation inside the feed cylinder 303, so that it can be fully mixed and stirred with the conventional coal to improve the coal blending quality, the fixed rod 305 rotates around the central axis of the intermediate fixed gear 304 when the feed cylinder 303 rotates synchronously. Simultaneously, the fixed rod 305 drives the first mating wheel 306 on one side to rotate, and the rotation of the first mating wheel 306 drives the second mating wheel 307 to rotate. Since the fixed gear 304 is stationary, when the fixed rod 305 drives the first mating wheel 306 outside the first mating wheel 306, the first mating wheel 306 will rotate on its own axis and revolve around the central axis, driving the second mating wheel 307 to rotate as it rotates. When the second wheel 307 revolves, it drives the driven connecting rod 309 at one end of the active connecting rod 308 to move. Since the driven connecting rod 309 is rotatably engaged with the transmission rod 311 on one side, the transmission rod 311 limits the swinging motion of the driven connecting rod 309, thereby driving the transmission rod 311 to perform lateral reciprocating motion inside the rotating feed cylinder 303. When the transmission rod 311 moves, it drives the mixing plate 313 to reciprocate. When the feed inlet of the feed cylinder 303 is not aligned with the bottom of the second hopper 2, the reciprocating motion of the mixing plate 313 inside the feed cylinder 303 can fully disperse the low-ash coal. Since the feed cylinder 303 is continuously rotating, the mixing plate 313 can further disperse the low-ash coal, thereby fully improving the mixing effect of low-ash coal and conventional coal.

[0050] In one specific embodiment, a splined bushing 310 is fixedly connected to the outer side of the transmission rod 311, and a splined groove 312 is engaged with the outer side of the splined bushing 310. The rotation of the second wheel 307 drives the driven connecting rod 309 at one end of the active connecting rod 308 to swing, thereby driving the transmission rod 311 to reciprocate laterally inside the splined groove 312, while simultaneously driving the transmission rod 311 and its outer side mixing plate 313 to rotate inside the feed cylinder 303.

[0051] Please see Figures 3 to 5It should be explained that when the transmission rod 311 slides inside the spline groove 312, it will reciprocate inside the feed cylinder 303 under the push of the driven connecting rod 309 and the driving connecting rod 308. In order to further improve the uniformity of feeding low-ash coal and improve the mixing effect of low-ash coal and conventional coal, the spline bushing 310 is fixedly connected to the outside of the transmission rod 311. When the transmission rod 311 slides, it will drive the spline bushing 310 to engage with the spline groove 312, thereby driving the transmission rod 311 to rotate during the lateral reciprocating movement. The rotation of the mixing plate 313 can better cooperate with the continuously rotating feed cylinder 303 to disperse the low-ash coal, and at the same time, it can make the low-ash coal fall more evenly from the bottom of the hopper 2, and mix thoroughly with the conventional coal that has fallen in advance.

[0052] In one specific embodiment, a rubber septum is provided on the inner side of the feed cylinder 303 to prevent small-diameter low-ash coal from entering the contact position between the spline bushing 310 and the spline groove 312. A deformable active block 601 is provided on one side of the moving plate 602, and the active block 601 is fixedly connected to the inner side of the feed cylinder 303. A deformable flexible magnet 607 is provided inside the active block 601, and a strong magnet with opposite magnetic poles to the flexible magnet 607 is provided at the contact position between the moving plate 602 and the feed cylinder 303.

[0053] Please see Figure 5 and Figure 6 As shown, when the mixing plate 313 reciprocates and rotates inside the feed cylinder 303, after the mixing plate 313 moves to a position close to the inner side of the feed cylinder 303, it will squeeze the active block 601, which is tightly attached to the inner side of the feed cylinder 303, causing the active block 601 to deform, such as... Figure 7 As shown, when the active block 601 deforms, the flexible magnet 607 inside it also deforms. At this time, the flexible magnet 607 will move closer to one end of the moving plate 602. Since one end of the moving plate 602 is equipped with a strong magnet with opposite magnetic poles to the flexible magnet 607, such as... Figure 7 As shown, when the flexible magnet 607 approaches the moving plate 602, it will drive the moving plate 602 to move from the inside to the outside. At this time, the movement of the moving plate 602 will change the tilt angle of the guide plate 8, changing it from a flat state to a more tilted state. This allows the conventional coal to reach the designated mixing position before the low-ash coal is fed. When the low-ash coal is not fed, the conventional coal is spread flat on the top of the guide plate 8 in a slow-flowing state, preparing for the next uniform mixing with the low-ash coal. This can fully improve the mixing effect of the two, and then the proportion of the coal entering the coke oven for high-temperature dry distillation can be guaranteed to ensure the quality of coal coking.

[0054] It needs to be explained that, since the transmission rod 311 is in continuous motion inside the feed cylinder 303, and the feed cylinder 303 is also in a continuous rotating state, when the active block 601 inside the feed cylinder 303 just rotates to one side of the moving plate 602, the mixing plate 313 will also squeeze the inner side of the active block 601, causing it and the flexible magnet 607 inside to deform. This causes the flexible magnet 607 to drive the strong magnet with opposite magnetic poles to move the moving plate 602 from the inside to the outside. At this time, the conventional coal will flow quickly inside the relatively inclined guide plate 8 to the bottom of the hopper 2. When the active block 601 is no longer squeezed by the mixing plate 313, the active block 601 will reset, and the conventional coal will change to a slow flow state. The low-ash coal will then fall onto the conventional coal and impact with the flowing conventional coal, further improving the mixing effect of the two.

[0055] In one specific embodiment, an arc-shaped push plate is provided on the outer arc surface of the mixing plate 313 to push the moving plate 602, causing it and the internal flexible magnet 607 to deform, driving the moving plate 602 to move from the inside to the outside. One side of the active block 601 is closely attached to the inner side of the feeding cylinder 303 and close to the feeding port.

[0056] Please see Figure 5 and Figure 6 It should be explained that when the mixing plate 313 moves to a position close to the inner side of the feed cylinder 303, the mixing plate 313 will contact the outer side of the active block 601 through an arc-shaped push, thereby driving the active block 601 to deform. This causes the flexible magnet 607 inside the active block 601 to deform, driving the moving plate 602 to move outward inside the coal distribution frame 7, changing the tilt state of the guide plate 8. Moreover, one side of the active block 601 is tightly attached to the inner side of the feed cylinder 303. Even if the active block 601 and its internal flexible magnet 607 deform under force at this time, the stability of the other side can be maintained, and it can quickly recover after the deformation ends, ensuring the deformation effect next time.

[0057] In one specific embodiment, a mixing chamber 4 is provided below the second hopper 2 and a pair of first hoppers 1. A drive rod 10 is provided inside the mixing chamber 4, and a mixing plate 9 is provided outside the drive rod 10. The drive rod 10 drives the mixing plate 9 to swing back and forth, which is used to re-mix the low-ash coal and conventional coal after impact mixing.

[0058] Furthermore, a conveying mechanism 5 is provided below the mixing bin 4 to transport the mixed low-ash coal and conventional coal to the next process. Both the mixing bin 4 and the conveying mechanism 5 are fixedly connected to the inner side of the coal distribution frame 7. Dust-proof gaskets are provided on the rotating parts of the guide plate 8 and the hopper 1 to ensure that the guide plate 8 can move normally below the hopper 1.

[0059] Please see Figures 1 to 2 As shown, when low-ash coal and conventional coal are mixed and fall synchronously, they will impact the outer side of the arc-shaped mixing plate 2 9. At this time, the mixing plate 2 9 will be driven by the drive rod 10 to swing back and forth. After the two impact the outer side of the swinging mixing plate 2 9, they can be further mixed and stirred more thoroughly. Moreover, the arc-shaped mixing plate 2 9 can also prevent low-ash coal from splashing after impacting its surface, which would prevent the low-ash coal from being unable to mix fully with the conventional coal. This can further improve the mixing effect of the two. After the two are mixed, they can be transported to the next process by the set conveying mechanism 5.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated coal blending device for low-ash coal coking, comprising a coal blending frame (7), characterized in that, The coal distribution frame (7) is equipped with a second hopper (2) for storing low-ash coal. A pair of first hoppers (1) are provided on both sides of the second hopper (2) for storing conventional coal. The second hopper (2) is equipped with a coal distribution mechanism (3). A guide plate (8) is rotatably connected to the bottom of a pair of hoppers (1) to guide conventional coal to the bottom of hopper (2) for premixing with low-ash coal. The guide plate (8) can be adjusted at its tilt angle below hopper (1) to change the flow state of conventional coal. The coal blending mechanism (3) includes a rotatable feed cylinder (303) inside the hopper (2), and two feed ports are opened on the outside of the feed cylinder (303). The feed cylinder (303) is provided with a horizontally reciprocating mixing plate (313), and the mixing plate (313) can rotate during the movement to break up the low-ash coal.

2. The automated coal blending device for low-ash coal coking according to claim 1, characterized in that, Below the hopper (1) is a flow guiding mechanism (6) for guiding conventional coal and cooperating with the feeding of low-ash coal. The flow guiding mechanism (6) includes a swingable pull plate (603). A pair of cooperating rods (605) are fixed below the pull plate (603). The outer side of the cooperating rods (605) slides in contact with a chute plate (606). The chute plate (606) and the flow guiding plate (8) are fixedly connected.

3. An automated coal blending device for low-ash coal coking according to claim 2, characterized in that, The flow guiding mechanism (6) also includes a movable plate (602) disposed on the outside of the feed cylinder (303). A mating plate (604) is fixedly connected to one side of the movable plate (602). The inner side of the mating plate (604) is movably engaged above the pull plate (603). The movement of the movable plate (602) drives the mating plate (604) to pull the pull plate (603) to swing.

4. An automated coal blending device for low-ash coal coking according to claim 1, characterized in that, The coal mixing mechanism (3) also includes a drive motor (301) fixedly connected to the coal mixing frame (7). The output end of the drive motor (301) is provided with a drive gear (302). The drive gear (302) and the feed cylinder (303) are meshed and driven. The feed cylinder (303) is fixedly connected with a fixing rod (305).

5. An automated coal blending device for low-ash coal coking according to claim 4, characterized in that, A fixed gear (304) is rotatably connected to the middle position of the fixed rod (305), and the fixed gear (304) is fixedly connected to the coal distribution frame (7). A first engagement wheel (306) is meshed with the outer side of the fixed gear (304), and a second engagement wheel (307) is meshed with the outer side of the first engagement wheel (306). A driving connecting rod (308) is rotatably connected to one side of the second engagement wheel (307), and a driven connecting rod (309) is rotatably connected to one end of the driving connecting rod (308). A transmission rod (311) is rotatably engaged with one end of the driven connecting rod (309). A first mixing plate (313) is detachably connected to the outer side of the transmission rod (311).

6. An automated coal blending device for low-ash coal coking according to claim 5, characterized in that, A splined bushing (310) is fixedly connected to the outside of the transmission rod (311), and a splined groove (312) is engaged with the outside of the splined bushing (310). The second mating wheel (307) revolves to drive the driven connecting rod (309) at one end of the active connecting rod (308) to swing, thereby driving the transmission rod (311) to reciprocate laterally inside the splined groove (312), while driving the transmission rod (311) and its outer mixing plate (313) to rotate inside the feed cylinder (303).

7. An automated coal blending device for low-ash coal coking according to claim 3, characterized in that, The inner side of the feed cylinder (303) is provided with a rubber septum to prevent small-diameter low-ash coal from entering the contact position between the spline bushing (310) and the spline groove (312). A deformable active block (601) is provided on one side of the moving plate (602), and the active block (601) is fixedly connected to the inner side of the feed cylinder (303). A deformable flexible magnet (607) is provided inside the active block (601), and a strong magnet with the opposite magnetic pole to the flexible magnet (607) is provided at the contact position between the moving plate (602) and the feed cylinder (303).

8. An automated coal blending device for low-ash coal coking according to claim 7, characterized in that, An arc-shaped push plate is provided on the outer arc surface of the mixing plate (313) to push the moving plate (602) and cause it and the internal flexible magnet (607) to deform, driving the moving plate (602) to move from the inside to the outside. One side of the active block (601) is closely attached to the inner side of the feeding cylinder (303) and close to the feeding port.

9. An automated coal blending device for low-ash coal coking according to claim 1, characterized in that, A mixing chamber (4) is provided below the second hopper (2) and a pair of first hoppers (1). A drive rod (10) is provided inside the mixing chamber (4). A mixing plate (9) is provided on the outside of the drive rod (10). The drive rod (10) drives the mixing plate (9) to swing back and forth, which is used to mix the low-ash coal and conventional coal after impact mixing again.

10. An automated coal blending device for low-ash coal coking according to claim 9, characterized in that, The mixing bin (4) is provided with a conveying mechanism (5) for conveying the mixed low-ash coal and conventional coal to the next process. The mixing bin (4) and the conveying mechanism (5) are both fixedly connected to the inner side of the coal distribution frame (7). The guide plate (8) and the rotating part of the hopper (1) are provided with dustproof gaskets to ensure that the guide plate (8) can move normally under the hopper (1).

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