Raw coal impurity removing and anti-blocking device

Abstract

The invention relates to the technical field of raw coal impurity removal, and particularly provides a raw coal impurity removal anti-blocking device. By arranging the feeding primary screening mechanism, coal powder is filtered out through a flow guide plate, and by arranging a first-stage material uniformizing device and a second-stage material uniformizing device, coal can be evenly dispersed, and the phenomenon that the device is blocked due to accumulation of the coal is prevented; the belt type iron removal mechanism is additionally arranged, metal impurities in raw coal are adsorbed through the magnetism of an electromagnet, and the discharging quality of coal is guaranteed; the grate type screening unit is additionally arranged, so that coal briquettes with small sizes can smoothly fall into a stock bin below through gaps between swing rods, and impurities such as stones with large sizes are temporarily intercepted on the swing rods and wait for follow-up rotary throwing treatment of the rotary roller claw type screening unit; and a rotating roller claw type screening unit is arranged, a first gear motor and a cam divider are used for providing power, a claw is intermittently driven to rotate, and large sundries can be thrown into a sundry recycling box.

Description

Technical Field

[0001] The invention relates to the technical field of raw coal impurity removal, in particular to a raw coal impurity removal and anti-blocking device. Background Art

[0002] The raw coal impurity removal device is a key device used to remove impurities (such as stones, soil, metal substances, etc.) in the coal during the coal mine production process, which can ensure the quality of coal and improve the efficiency of downstream processes. However, in actual application, the coal mine impurity removal device often faces the problem of blockage. Frequent blockage not only affects the operating efficiency of the device, but may also cause damage to the device and production stagnation.

[0003] The blockage of the raw coal impurity removal device is usually caused by the accumulation of debris, overload or incomplete separation during the operation of the device. For example, wet coal, soil and other sticky impurities are easy to adhere to the screen or conveyor belt. As the accumulation increases, the screen is blocked or the conveyor belt is stuck; or when the particle size of the material varies greatly, it is easy to cause incomplete screening, and large pieces of debris are easy to get stuck in the screen holes or outlets of the device, hindering the normal flow of materials. At the same time, when the conveying volume of coal and debris exceeds the processing capacity of the device, the material may not be able to pass through the screening or separation system in time, thus accumulating and causing blockage.

[0004] To this end, the present invention proposes a raw coal impurity removal and anti-blocking device. Summary of the invention

[0005] The object of the present invention is to provide a raw coal impurity removal and anti-blocking device, which can screen out impurities present in the raw coal and effectively reduce the occurrence of device blockage.

[0006] In order to achieve the above object, the technical solutions adopted by the present invention are as follows:

[0007] A raw coal impurity removal and anti-blocking device comprises a frame, an inlet primary screening mechanism, a raw coal conveying mechanism, a belt-type iron removal mechanism, an impurity removal mechanism and a strip-type impurity discharge mechanism;

[0008] The feed screening mechanism is arranged at the front end of the frame and is used to screen and grade the input materials.

[0009] The front end of the raw coal conveying mechanism is located below the discharge port of the feed primary screening mechanism;

[0010] The belt-type iron removal mechanism is located above the raw coal conveying mechanism and is used to remove iron impurities mixed in the raw coal conveyed on the surface of the raw coal conveying mechanism;

[0011] The impurity removal mechanism comprises a base, a grate screening unit, a rotary roller hook-claw screening unit and a hook cleaning unit;

[0012] Wherein, a first opening is provided in the middle of the base, the grate screening unit and the rotary roller hook-claw screening unit are both provided at the first opening, the rotary roller hook-claw screening unit is located in the middle of the base, and the grate screening unit is located in front of the rotary roller hook-claw screening unit;

[0013] The grate screening unit is located at the rear side of the raw coal conveying mechanism and is connected to the raw coal conveying mechanism;

[0014] A mounting frame is arranged on the top of the base, a second opening is arranged on the top of the mounting frame, a hook cleaning unit is arranged inside the second opening, and the hook cleaning unit is located above the rear side of the rotary roller hook claw type screening unit and is used to clean the rotary roller hook claw type screening unit;

[0015] The strip-type debris discharging mechanism is located at the rear side and below the first opening;

[0016] The strip-type debris discharging mechanism is arranged along the front-to-back direction, and a debris recovery box is provided at the lower rear side of the strip-type debris discharging mechanism.

[0017] Preferably, the feed primary screening mechanism comprises a feed hopper, a first-stage sparger and a second-stage sparger;

[0018] A first-stage material sparger is arranged above the feed inlet of the feed hopper, and the first-stage material sparger includes a connecting shaft and a swing hook, wherein the connecting shaft is horizontally arranged above the feed hopper, and a plurality of swing hooks are arranged, and the plurality of swing hooks are arranged on the connecting shaft at equal intervals; an inclined guide plate is arranged inside the feed hopper, and a plurality of screening grooves are opened on the guide plate;

[0019] A second-stage material distributor is arranged at the discharge port of the feed hopper, and the second-stage material distributor has the same structure as the first-stage material distributor.

[0020] Preferably, the raw coal conveying mechanism includes a first-stage transmission belt, and the first-stage transmission belt is located obliquely below the discharge port of the feed hopper.

[0021] Preferably, the belt-type iron removal mechanism includes a second-stage transmission belt and an electromagnet, wherein the second-stage transmission belt is located above the first-stage transmission belt, and the transmission direction of the second-stage transmission belt is perpendicular to the transmission direction of the first-stage transmission belt, and the electromagnet is located between the interlayers of the second-stage transmission belt.

[0022] Preferably, the grate screening unit comprises an oil cylinder, a first square tube, a driving block, a stopper and a swing rod;

[0023] The first square tube is arranged horizontally, and both ends of the first square tube are provided with a rotating shaft, and each rotating shaft is connected to a first bearing seat through a bearing, and the first bearing seat is connected to the base;

[0024] There are two driving blocks, and each driving block is correspondingly connected to one end of the first square tube;

[0025] There are two oil cylinders, both of which are arranged on the base, and the output shaft of each oil cylinder is connected to a corresponding driving block; a plurality of swing rods arranged at equal intervals are also arranged on the first square tube, and the plurality of swing rods are arranged parallel to each other;

[0026] A plurality of stoppers are also arranged on the first square tube, wherein a stopper is arranged on both sides of the end of each swing rod.

[0027] Preferably, the feed primary screening mechanism comprises a feed hopper, a first-stage sparger and a second-stage sparger;

[0028] A first-stage material sparger is arranged above the feed inlet of the feed hopper, and the first-stage material sparger includes a connecting shaft and a swing hook, wherein the connecting shaft is horizontally arranged above the feed hopper, and a plurality of swing hooks are arranged, and the plurality of swing hooks are arranged on the connecting shaft at equal intervals; an inclined guide plate is arranged inside the feed hopper, and a plurality of screening grooves are opened on the guide plate;

[0029] A second-stage material distributor is arranged at the discharge port of the feed hopper, and the second-stage material distributor has the same structure as the first-stage material distributor.

[0030] Preferably, the rotary roller hook-claw type screening unit comprises a first roller shaft and a hook, both ends of the first roller shaft are connected to a second bearing seat through a bearing, and the second bearing seat is arranged on the base;

[0031] A plurality of groups of hooks are arranged on the first roller shaft; each group comprises three hooks, wherein the three hooks in the same group are located on the same plane, and the interval angle between the hooks in the same group is 120°; the individual hooks in each group of hooks correspond to each other in position, and three rows of hook groups are formed as a whole, which are arranged axially along the first roller shaft;

[0032] The rotary roller hook-claw screening unit is equipped with an intermittent transmission unit, which can be used to drive the roller shaft to rotate intermittently.

[0033] Preferably, the intermittent transmission unit comprises a first reduction motor and a cam divider;

[0034] The first reduction motor is arranged on the base, the first reduction motor is connected to the cam divider, and the cam divider is connected to the first roller shaft.

[0035] Preferably, the hook cleaning unit comprises a single-rotating scraper assembly;

[0036] The single-rotation scraper assembly includes a rotating shaft and a first cleaning scraper; the rotating shaft is arranged horizontally, and both ends of the rotating shaft are connected to a third bearing seat through bearings, and the third bearing seat is arranged on a mounting frame;

[0037] There are a plurality of first cleaning scrapers, and the first cleaning scrapers are evenly arranged on the rotating shaft along the axial direction of the rotating shaft.

[0038] Preferably, the hook cleaning unit further comprises a linkage scraper assembly;

[0039] The linkage scraper assembly includes a cylinder, a slide rail, a slider, an oil cylinder, a second square tube and a second cleaning scraper;

[0040] Cylinders and slide rails are arranged on both sides of the top of the mounting frame, the slide block is arranged on the slide rail, the piston end of the cylinder is connected to the slide block, and the top of the slide block is fixedly connected with a fourth bearing seat;

[0041] The second square tube is arranged horizontally, and transmission shafts are installed at both ends of the second square tube, and each transmission shaft is connected to a fourth bearing seat through a bearing;

[0042] A plurality of the second cleaning scrapers are fixedly connected to the second square tube along the length direction of the second square tube;

[0043] The oil cylinder is arranged on the mounting frame, and the output shaft of the oil cylinder is connected to the second square tube.

[0044] Preferably, the strip-type debris discharging mechanism comprises a second reduction motor, a second roller and a strip;

[0045] The output shaft of the second reduction motor is connected to the end of the second roller shaft, and the second roller shaft is provided with a plurality of strips arranged at equal intervals.

[0046] The beneficial technical effects of the present invention are:

[0047] The present invention proposes a raw coal impurity removal and anti-blocking device, which provides a feed primary screening mechanism, utilizes the screening grooves provided on the guide plate to filter out coal powder with smaller particle sizes, and simultaneously provides a first-stage sparger at the feed inlet of the feed hopper and a second-stage sparger at the discharge outlet, so that the coal can be fully and evenly dispersed, and the coal blocks can be prevented from piling up and causing the device to be blocked; by adding a belt-type iron removal mechanism, the magnetic force of the electromagnet is utilized to absorb metal impurities in the raw coal, so as to ensure the discharge quality of the coal; by adding a grate-type screening unit, the coal blocks with smaller volumes can smoothly pass through the gaps between the swinging rods and fall into the silo below, and Larger stones and other debris are temporarily retained on the swing rod, waiting to be hooked up and thrown by the rotary roller hook type screening unit; by setting the oil cylinder to drive the swing rod to swing to a certain amplitude, it can prevent coal blocks or debris from getting stuck in the gap of the swing rod, and also provide favorable conditions for the subsequent throwing process; by setting the rotary roller hook type screening unit, using the first reduction motor and the cam divider to provide power, intermittently drive the hook to rotate, it can throw the large debris trapped on the swing rod into the debris recovery box, and at the same time add a strip type debris removal mechanism to transport part of the debris to the debris recovery box, waiting for subsequent unified processing. The present invention can achieve the removal of debris in the raw coal by optimizing the structural design, while effectively reducing the probability of the device being blocked, thereby improving the production efficiency of the coal mine and ensuring the quality of the coal material; by using the raw coal impurity removal and anti-blocking device provided by the present invention, the degree of automation is high, and there is no need for the staff to manually perform the impurity removal operation, which not only ensures the life and health safety of the staff, but also improves the efficiency of impurity removal, and meets the development requirements of modern industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 The three-dimensional structure of the raw coal impurity removal and anti-blocking device of the present invention Figure 1 ;

[0049] Figure 2 The three-dimensional structure of the raw coal impurity removal and anti-blocking device of the present invention Figure 2 ;

[0050] Figure 3 It is a front view of the raw coal impurity removal and anti-blocking device of the present invention;

[0051] Figure 4 It is a schematic diagram of the assembly of the feed primary screening mechanism and the belt-type iron removal mechanism in the embodiment of the present invention;

[0052] Figure 5 This is a schematic diagram of the structure of the feed primary screening mechanism in an embodiment of the present invention;

[0053] Figure 6 The structure of the belt type iron removal mechanism in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0054] Figure 7 The structure of the belt type iron removal mechanism in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0055] Figure 8 It is a schematic diagram of the assembly of the grate-type screening unit, the strip-type debris discharging mechanism and the debris recovery box in the embodiment of the present invention;

[0056] Fig. 9 Schematic diagram of the assembly of the grate screening unit, the rotary roller hook-claw screening unit and the hook cleaning unit according to the embodiment of the present invention Figure 1 ;

[0057] Fig.10 Schematic diagram of the assembly of the grate screening unit, the rotary roller hook-claw screening unit and the hook cleaning unit according to the embodiment of the present invention Figure 2 ;

[0058] Fig.11 Schematic diagram of the assembly of the grate screening unit and the rotary roller claw screening unit in the embodiment of the present invention Figure 1 ;

[0059] Fig.12 Schematic diagram of the assembly of the grate screening unit and the rotary roller claw screening unit in the embodiment of the present invention Figure 2 ;

[0060] Fig.13 Schematic diagram of the structure of the grate screening unit in the embodiment of the present invention;

[0061] Fig.14 It is a structural schematic diagram of a rotary roller hook-claw type screening unit in an embodiment of the present invention;

[0062] Fig.15 It is a schematic diagram of the assembly of the rotary roller hook-claw type screening unit and the hook cleaning unit in the embodiment of the present invention;

[0063] Fig.16 Schematic diagram of the structure of a single-rotating scraper assembly in a hook cleaning unit in an embodiment of the present invention;

[0064] Fig.17 Schematic diagram of the structure of the linkage scraper assembly in the hook cleaning unit in the embodiment of the present invention;

[0065] Fig.18 Schematic diagram of the structure of the strip-type debris discharging mechanism in an embodiment of the present invention;

[0066] Among them, a-frame, b-base, c-mounting frame;

[0067] 1-feeding primary screening mechanism: 11-feeding funnel, 111-guide plate, 12-first-stage material distributor: 121-connecting shaft, 122-swing hook, 123-synchronizing shaft; 13-second-stage material distributor;

[0068] Raw coal conveying mechanism: 21- first-stage transmission belt;

[0069] 2-belt type iron removal mechanism: 221-second stage transmission belt, 222-electromagnet;

[0070] Debris removal mechanism:

[0071] 3-grate screening unit: 31-first square tube, 32-first bearing seat, 33-driving block, 34-swing rod, 35-stop block;

[0072] 4-Rotary roller hook type screening unit: 41-first reduction motor, 42-cam divider, 43-first roller shaft, 44-second bearing seat, 45-hook, 46-spacer sleeve;

[0073] 5-Hook clearing unit:

[0074] Single-rotating scraper assembly: 511-rotating shaft, 512-third bearing seat, 513-first cleaning scraper;

[0075] Linkage scraper assembly: 521-slide rail, 522-sliding block, 523-fourth bearing seat, 524-second square tube, 525-second cleaning scraper;

[0076] 6-strip type trash removal mechanism: 61-second roller, 62-strip;

[0077] 7-Miscellaneous recycling bin. DETAILED DESCRIPTION

[0078] In order to make the purpose, technical scheme and beneficial effects of the present invention more clearly understood, the present invention is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. Certain embodiments of the present invention will be described more comprehensively with reference to the accompanying drawings, in which some but not all embodiments will be shown. In fact, various embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the embodiments described herein; rather, these embodiments are provided so that the present invention meets applicable legal requirements.

[0079] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "back" and the like indicate directions or positional relationships based on directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0080] In an embodiment of the present invention, a raw coal impurity removal and anti-blocking device is provided, please refer to Figures 1 to 18 As shown. The raw coal impurity removal and anti-blocking device can screen out metal impurities or large impurities in the raw coal, and at the same time can effectively reduce the probability of the device being blocked, thereby ensuring normal coal mining operations and improving coal mine production efficiency. Among them, the raw coal impurity removal and anti-blocking device mainly includes a frame a, a feed primary screening mechanism 1, a belt-type iron removal mechanism 2, an impurity removal mechanism (a grate screening unit 3, a rotary roller hook-claw screening unit 4 and a hook cleaning unit 5), a strip-type impurity removal mechanism 6 and an impurity recovery box 7 and other structural components. The frame a can play a role in supporting each mechanism and provide a stable and firm assembly environment for other mechanisms.

[0081] Combination Figures 1 to 3 As shown, the feed preliminary screening mechanism 1 is arranged at the front end of the frame a and is used to preliminarily screen and grade the input materials. The feed preliminary screening mechanism 1 includes a feed hopper 11, a first-stage grader 12, a second-stage grader 13 and other structural components.

[0082] Combination Figure 4 and Figure 5 As shown, a first-stage material distributor 12 is arranged above the feed port of the feed hopper 11, and the first-stage material distributor 12 includes a connecting shaft 121 and a swing hook 122, wherein the connecting shaft 121 is horizontally arranged above the feed hopper 11, and a plurality of swing hooks 122 are arranged, and the plurality of swing hooks 122 are evenly spaced on the connecting shaft 121. Before the raw coal enters the feed hopper 11, the raw coal contacts the swing hooks 122 to evenly disperse the raw materials, thereby preventing a large amount of raw coal from accumulating and causing the feed hopper 11 to be blocked, thereby avoiding affecting the subsequent operation of the device.

[0083] Combination Figure 5 As shown, the feed hopper 11 is provided with an inclined guide plate 111, and a plurality of screening grooves are provided on the guide plate 111. When the raw coal enters the feed hopper 11, the coal powder with a smaller particle size can enter the silo below through the screening grooves on the guide plate 111, thereby reducing the accumulation of coal powder and thus reducing the probability of blockage of small gaps such as the sieve holes in the subsequent sieve.

[0084] Combination Figure 3 and Figure 4 As shown, the discharge port of the feed hopper 11 is provided with a second-stage sparger 13, and the second-stage sparger 13 has the same structural arrangement as the first-stage sparger 12, which will not be elaborated in detail here. By providing the second-stage conveyor 13 at the discharge port of the feed hopper 11, the coal can be evenly dispersed again, so that the raw coal can evenly fall onto the first-stage transmission belt 21, preventing the first-stage transmission belt 21 from jamming due to a large amount of raw coal accumulation. At the same time, the coal blocks on the first-stage transmission belt 21 are in a flat state, which is also convenient for the subsequent iron removal process to proceed smoothly.

[0085] Combination Figure 3 As shown, the front end of the raw coal conveying mechanism is located below the discharge port of the feed primary screening mechanism 1 , wherein the raw coal conveying mechanism includes a first-stage transmission belt 21 , and one end of the first-stage transmission belt 21 is located below the discharge port of the feed funnel 11 .

[0086] Combination Figure 3 As shown, the belt-type iron removal mechanism 2 is located above the raw coal conveying mechanism, and is used to remove metal impurities such as anchor rods, metal meshes, and steel ladders from the raw coal conveyed on the surface of the first-stage transmission belt 21 to fully ensure the quality of the coal.

[0087] Combination Figure 4 , Figure 6 and Figure 7 As shown, the belt-type iron removal mechanism 2 includes a second-stage transmission belt 221 and an electromagnet 222 and other structures, wherein the second-stage transmission belt 221 is located above the first-stage transmission belt 21, and the transmission direction of the second-stage transmission belt 221 is perpendicular to the transmission direction of the first-stage transmission belt 21, and the electromagnet 222 is located between the interlayers of the second-stage transmission belt 221.

[0088] After the electromagnet 222 is controlled to be magnetized, it can absorb metal materials such as anchor rods and metal mesh in the raw coal onto the second-stage transmission belt 221, and rely on the inertia of the second-stage transmission belt 221 to throw the metal materials into the scrap iron collection boxes provided on both sides of the second-stage transmission belt 221.

[0089] Combination Fig. 9 and Fig.10 As shown, the impurity removal mechanism includes a base b, a grate screening unit 3, a rotary roller hook-claw screening unit 4 and a hook cleaning unit 5. A first opening is provided in the middle of the base b, the grate screening unit 3 and the rotary roller hook-claw screening unit 4 are both provided at the first opening, the rotary roller hook-claw screening unit 4 is located in the middle of the base b, and the grate screening unit 3 is located in front of the rotary roller hook-claw screening unit 4.

[0090] Combination Figure 8As shown, the grate screening unit 3 is located at the rear side of the raw coal conveying mechanism and is connected with the raw coal conveying mechanism. The grate screening unit 3 includes an oil cylinder, a first square tube 31, a first bearing seat 32, a driving block 33, a swing rod 34 and a stopper 35.

[0091] Combination Fig.13 As shown, the first square tube 31 is arranged horizontally, and both ends of the first square tube 31 are provided with a rotating shaft, and each rotating shaft is connected to a first bearing seat 32 through a bearing, and the first bearing seat 32 is connected to the base b. There are two driving blocks 33, and each driving block 33 is connected to one end of the first square tube 31. There are two oil cylinders (not shown in the figure), and they are both arranged on the base b. The output shaft of each oil cylinder is connected to a driving block 33, and the driving block 33 is driven to rotate by the oil cylinder. The driving block 33 can drive the first square tube 31 to rotate. Among them, a plurality of swing rods 34 arranged in parallel are also arranged on the first square tube 31, and the plurality of swing rods 34 are arranged at equal intervals, and the smaller coal blocks can fall from the gaps between the adjacent swing rods 34. A silo is arranged directly below the swing rod 34, which can load smaller coal blocks, and larger debris will be temporarily trapped on the swing rod 34, waiting for the subsequent rotary roller hook claw screening unit 4 to perform rotary throwing and impurity removal operations.

[0092] In addition, when coal blocks or debris are stuck in the gap of the swing rod 34 due to impact or its own gravity, the oil cylinder provides power to drive the first square tube 31 to rotate, and the swing rod 34 set on the first square tube 31 will also rotate accordingly, and the swing amplitude and frequency can be controlled and adjusted by the oil cylinder, so that the coal blocks are separated from the swing rod 34, ensuring the smooth progress of the subsequent spinning and throwing process.

[0093] Combination Fig.13 As shown, a plurality of blocks 35 are also provided on the first square tube 31, wherein a block 35 is provided on both sides of the end of each swing rod 34, and the block 35 can prevent the debris from rolling back to the position between the base b and the first-stage transmission belt 21 when the swing rod 34 is raised upward, causing wear on the transmission belt and damage to the equipment. At the same time, the outer contour of the block 35 is semicircular, and when the coal block rolls freely from the first-stage transmission belt 21, the coal block or debris can fall on the swing rod 34 more smoothly because the contour curvature of the block 35 is tangent to the falling direction of the coal block.

[0094] Combination Fig.11 and Fig.12 As shown, a rotary roller hook type screening unit 4 is arranged in the middle position of the base b, and the rotary roller hook type screening unit 4 mainly includes a first roller shaft 43, a second bearing seat 44, a hook 45 and a spacer sleeve 46.

[0095] In addition, the rotary roller hook type screening unit 4 is also configured with an intermittent transmission unit for driving the rotary roller hook type screening unit 4 to rotate, and the intermittent transmission unit includes a reduction motor 41 and a cam divider 42 .

[0096] Combination Fig.14 As shown, the reduction motor 41 is arranged on the base b, the reduction motor 41 is connected to the cam divider 42, the cam divider 42 is connected to the first roller 43, and is used to drive the first roller 43 to realize intermittent rotation. Both ends of the first roller 43 are connected to the second bearing seat 44 through bearings, and the second bearing seat 44 is arranged on the base b.

[0097] Combination Fig.14 As shown, a plurality of groups of hooks 45 are provided on the first roller 43, wherein three hooks 45 form a group, the three hooks 45 in the same group are located on the same plane, and the interval angle between the hooks 45 in the same group is 120°. A spacing sleeve 46 is provided between two adjacent groups of hooks 45 to effectively separate the hooks 45. The individual hooks 45 of each group of hooks correspond to each other in position, and three rows of hook groups are formed as a whole, which are arranged axially along the first roller 43.

[0098] Combination Fig.11 and Fig.12 As shown, the swing rod 34 and the hook claw 45 are arranged at intervals. When the hook claw 45 rotates, it will not interfere with the swing rod 34, ensuring the smooth progress of the spinning and throwing process.

[0099] When larger debris is trapped on the swing rod 34, the first reduction motor 41 is turned on to provide power, and the first roller 43 is intermittently rotated through the cam divider 42, so that the hook 45 provided on the first roller 43 completes the spinning and throwing of the large debris every time it rotates 120°, that is, every time it rotates, a row of hooks 45 groups simultaneously complete the process of hooking up the debris above the swing rod 34 and spinning and throwing it to remove the debris. At the same time, it can also prevent the situation that the debris is not completely thrown out by the hook 45 before it is completely in place, and the whole spinning and throwing process is more controllable.

[0100] Combination Fig. 9 and Fig.10 As shown, a mounting frame c is arranged on the top of the base b, a second opening is arranged on the top of the mounting frame c, and a hook cleaning unit 5 is arranged inside the second opening, wherein the hook cleaning unit 5 is located above the rear side of the rotary roller hook-claw screening unit 4, and the hook cleaning unit 5 can clean the hook 45 of the rotary roller hook-claw screening unit 4, to prevent the rope and other entanglements from affecting the rotary throwing and impurity removal operation of the hook 45, thereby ensuring the normal transportation and production of coal. The hook cleaning unit 5 mainly includes a single rotary scraper assembly and a linkage scraper assembly.

[0101] Combination Fig.16As shown, the single-rotation scraper assembly includes structural components such as a rotating shaft 511, a third bearing seat 512, and a first cleaning scraper 513. The rotating shaft 511 is horizontally arranged, and both ends of the rotating shaft 511 are connected to the third bearing seat 512 through bearings, and the bottom of the third bearing seat 512 is fixedly arranged on the mounting frame c. There are multiple first cleaning scrapers 513, and the first cleaning scrapers 513 are evenly arranged on the rotating shaft 511 along the axial direction of the rotating shaft 511. Each of the first cleaning scrapers 513 is connected to the rotating shaft 511 through a sleeve, and each of the first cleaning scrapers 513 can swing freely to cut off debris, and can achieve inertial reset by its own gravity.

[0102] Combination Fig.17 As shown, the linkage scraper assembly includes structural components such as a cylinder, a slide rail 521, a slider 522, an oil cylinder, a second square tube 524, and a second cleaning scraper 525. Among them, the top of the mounting frame c is provided with a cylinder and a slide rail 521 on both sides, the slider 522 is arranged on the slide rail 521, the piston end of the cylinder is connected to the slider 522, the cylinder can drive the slider 522 to move along the slide rail 521, and at the same time, the top of the slider 522 is fixedly connected with a fourth bearing seat 523. The second square tube 524 is arranged horizontally, and transmission shafts are installed at both ends of the second square tube 524, and each transmission shaft is connected to the fourth bearing seat 523 through a bearing. A plurality of second cleaning scrapers 525 are fixedly connected to the second square tube 524 along the length direction of the second square tube 524. The oil cylinder is arranged on the mounting frame c, and the output shaft of the oil cylinder is connected to one end of the second square tube 524, and the oil cylinder can drive the second square tube 524 to rotate. The oil cylinder provides power to drive the second square tube 524 to rotate, and the second cleaning scraper 525 rotates with the second square tube 524, so that the setting angle of the second cleaning scraper 525 can be adjusted to clean the sticky debris on the hook 45 and the entanglement such as the rope, so as to ensure the smooth progress of the casting and debris removal process.

[0103] Combination Fig.15 As shown, the number of the first cleaning scraper 513 and the second cleaning scraper 525 is the same as the number of each row of hook claw groups and the positions correspond one to one, wherein the first cleaning scraper 513 and the second cleaning scraper 525 are both located between adjacent hook claw groups, and can complete the cutting and cleaning of sticky debris and entanglements such as ropes on the hook claws 45 to maintain the normal operation of the rotary roller hook claw screening unit 4.

[0104] Combination Fig.16 and Fig.17As shown, the blade heads of the first cleaning scraper 513 and the second cleaning scraper 525 are both triangular scrapers. When the hook 45 rotates, the blade heads and the hook 45 generate relative motion. Since the first cleaning scraper 513 and the second cleaning scraper 525 are close to the hook 45, the blade heads can cut the sticky debris and soft debris on the hook 45, so that the hook 45 can operate normally to complete the hooking and perform the rotary throwing and debris removal operation. The rotating shaft 511 of the single rotary scraper assembly is located above the stop position of the rotary roller hook type screening unit 4. The first cleaning scraper 513 arranged on the rotating shaft 511 freely swings along the rotating shaft 511 to cut off the soft debris, and at the same time regularly cooperates with the linkage scraper assembly. The cylinder action drives the second cleaning scraper 525 to move and hook and cut the debris, realizing the function of periodically cleaning the soft debris on the hook 45.

[0105] Combination Figures 1 to 3 As shown, the strip-type debris discharging mechanism 6 is located below the rear side of the first opening, and the strip-type debris discharging mechanism 6 is arranged along the front-to-back direction.

[0106] Combination Figure 3 and Fig.18 As shown, the strip-type debris discharging mechanism 6 includes structural components such as a second reduction motor, a second roller 61, and a strip 62, wherein the output shaft of the second reduction motor is connected to the end of the second roller 61, and a plurality of strips 62 arranged at equal intervals are provided on the second roller 61. The second reduction motor provides power to drive the second roller 61 to rotate, and large debris such as stones on the strip 62 are transported to the debris recovery box 7, while small coal blocks fall into the silo below through the gaps between the strips 62 for storage.

[0107] Combination Figures 1 to 3 As shown, a debris recovery box 7 is provided at the lower rear side of the strip-type debris discharging mechanism 6, which can be used to store large debris such as stones for subsequent unified recovery and treatment.

[0108] Combination Figures 1 to 18As shown, the present invention proposes a raw coal impurity removal and anti-blocking device, which provides a feed primary screening mechanism 1, utilizes the screening grooves of the guide plate 111 to filter out coal powder with smaller particle sizes, and simultaneously provides a first-stage sparger 12 at the feed port of the feed hopper 11 and a second-stage sparger 13 at the discharge port, so that the coal can be fully and evenly dispersed to prevent the accumulation of coal blocks and the blocking of the device; by adding a belt-type iron removal mechanism 2, the magnetic force of the electromagnet 222 is utilized to absorb metal impurities in the raw coal, so as to ensure the discharge quality of the coal; by adding a grate screening unit 3, the coal blocks with smaller volumes can smoothly pass through the gaps between the swing bars 34 and fall into the silo below, Larger debris such as stones are temporarily retained on the swing rod 34, waiting to be subsequently processed by the rotary roller hook-claw screening unit 4 for rotary throwing. By arranging an oil cylinder to drive the swing rod 34 to swing to a certain extent, it is possible to prevent coal blocks from being stuck in the gap of the swing rod 34, and at the same time, it can provide favorable conditions for the subsequent throwing process. In addition, by arranging the rotary roller hook-claw screening unit 4, the first reduction motor 41 and the cam divider 42 are used to provide power, and the hook 45 is intermittently driven to rotate, so that the large debris retained on the swing rod 34 can be thrown into the debris recovery box 7. At the same time, a strip-type debris discharging mechanism 6 is added to transport part of the debris to the debris recovery box 7, waiting for subsequent unified processing.

[0109] The present invention can achieve the removal of impurities in raw coal by optimizing the structural design, while effectively reducing the probability of the device being blocked, thereby improving the production efficiency of the coal mine and ensuring the quality of the coal. By utilizing the raw coal impurity removal and anti-blocking device provided by the present invention, the degree of automation is high, and the staff does not need to manually perform the impurity removal operation, which not only ensures the life and health safety of the staff, but also improves the efficiency of impurity removal, and meets the development requirements of modern industry.

[0110] Of course, the specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for removing impurities and preventing jamming of raw coal, characterized in that: It includes a frame, a feed primary screening mechanism, a raw coal conveying mechanism, a belt-type iron removal mechanism, a debris removal mechanism, and a strip-type debris removal mechanism; The feed screening mechanism is arranged at the front end of the frame and is used to screen and grade the input materials. The front end of the raw coal conveying mechanism is located below the discharge port of the feed primary screening mechanism; The belt-type iron removal mechanism is located above the raw coal conveying mechanism and is used to remove iron impurities mixed in the raw coal conveyed on the surface of the raw coal conveying mechanism; The impurity removal mechanism comprises a base, a grate screening unit, a rotary roller hook-claw screening unit and a hook cleaning unit; Wherein, a first opening is provided in the middle of the base, the grate screening unit and the rotary roller hook-claw screening unit are both provided at the first opening, the rotary roller hook-claw screening unit is located in the middle of the base, and the grate screening unit is located in front of the rotary roller hook-claw screening unit; The grate screening unit is located at the rear side of the raw coal conveying mechanism and is connected to the raw coal conveying mechanism; A mounting frame is arranged on the top of the base, a second opening is arranged on the top of the mounting frame, a hook cleaning unit is arranged inside the second opening, and the hook cleaning unit is located above the rear side of the rotary roller hook claw type screening unit and is used to clean the rotary roller hook claw type screening unit; The strip-type debris discharging mechanism is located at the rear side and below the first opening; The strip-type debris discharging mechanism is arranged along the front-to-back direction, and a debris recovery box is provided at the lower rear side of the strip-type debris discharging mechanism.

2. A raw coal impurity removal and anti-blocking device according to claim 1, characterized in that: The feed primary screening mechanism includes a feed hopper, a first-stage sparger and a second-stage sparger; A first-stage material sparger is arranged above the feed inlet of the feed hopper, and the first-stage material sparger includes a connecting shaft and a swing hook, wherein the connecting shaft is horizontally arranged above the feed hopper, and a plurality of swing hooks are arranged, and the plurality of swing hooks are arranged on the connecting shaft at equal intervals; an inclined guide plate is arranged inside the feed hopper, and a plurality of screening grooves are opened on the guide plate; A second-stage material distributor is arranged at the discharge port of the feed hopper, and the second-stage material distributor has the same structure as the first-stage material distributor.

3. The device for removing impurities and preventing jamming of raw coal according to claim 1 is characterized by: The raw coal conveying mechanism comprises a first-stage transmission belt, and the first-stage transmission belt is located obliquely below the discharge port of the feed hopper.

4. A raw coal impurity removal and anti-blocking device according to claim 3, characterized in that: The belt-type iron removal mechanism includes a second-stage transmission belt and an electromagnet, wherein the second-stage transmission belt is located above the first-stage transmission belt, and the transmission direction of the second-stage transmission belt is perpendicular to the transmission direction of the first-stage transmission belt, and the electromagnet is located between the interlayers of the second-stage transmission belt.

5. The device for removing impurities and preventing jamming of raw coal according to claim 1, characterized in that: The grate screening unit comprises an oil cylinder, a first square tube, a driving block, a stopper and a swing rod; The first square tube is arranged horizontally, and both ends of the first square tube are provided with a rotating shaft, and each rotating shaft is connected to a first bearing seat through a bearing, and the first bearing seat is connected to the base; There are two driving blocks, and each driving block is correspondingly connected to one end of the first square tube; There are two oil cylinders, both of which are arranged on the base, and the output shaft of each oil cylinder is connected to a corresponding driving block; a plurality of swing rods arranged at equal intervals are also arranged on the first square tube, and the plurality of swing rods are arranged parallel to each other; A plurality of stoppers are also arranged on the first square tube, wherein a stopper is arranged on both sides of the end of each swing rod.

6. The device for removing impurities and preventing jamming of raw coal according to claim 1, characterized in that: The rotary roller hook-claw screening unit comprises a first roller shaft and a hook, both ends of the first roller shaft are connected to a second bearing seat through a bearing, and the second bearing seat is arranged on a base; A plurality of groups of hooks are arranged on the first roller shaft; each group comprises three hooks, wherein the three hooks in the same group are located on the same plane, and the interval angle between the hooks in the same group is 120°; the individual hooks in each group of hooks correspond to each other in position, and three rows of hook groups are formed as a whole, which are arranged axially along the first roller shaft; The rotary roller hook-claw screening unit is equipped with an intermittent transmission unit, which can be used to drive the roller shaft to rotate intermittently.

7. A raw coal impurity removal and anti-blocking device according to claim 6, characterized in that: The intermittent transmission unit includes a first reduction motor and a cam divider; The first reduction motor is arranged on the base, the first reduction motor is connected to the cam divider, and the cam divider is connected to the first roller shaft.

8. The device for removing impurities and preventing jamming of raw coal according to claim 1, characterized in that: The hook cleaning unit includes a single-rotating scraper assembly; The single-rotation scraper assembly includes a rotating shaft and a first cleaning scraper; the rotating shaft is arranged horizontally, and both ends of the rotating shaft are connected to a third bearing seat through bearings, and the third bearing seat is arranged on a mounting frame; There are a plurality of first cleaning scrapers, and the first cleaning scrapers are evenly arranged on the rotating shaft along the axial direction of the rotating shaft.

9. A raw coal impurity removal and anti-blocking device according to claim 8, characterized in that: The hook cleaning unit also includes a linkage scraper assembly; The linkage scraper assembly includes a cylinder, a slide rail, a slider, an oil cylinder, a second square tube and a second cleaning scraper; Cylinders and slide rails are arranged on both sides of the top of the mounting frame, the slide block is arranged on the slide rail, the piston end of the cylinder is connected to the slide block, and the top of the slide block is fixedly connected with a fourth bearing seat; The second square tube is arranged horizontally, and transmission shafts are installed at both ends of the second square tube, and each transmission shaft is connected to a fourth bearing seat through a bearing; A plurality of the second cleaning scrapers are fixedly connected to the second square tube along the length direction of the second square tube; The oil cylinder is arranged on the mounting frame, and the output shaft of the oil cylinder is connected to the second square tube.

10. The device for removing impurities and preventing jamming of raw coal according to claim 1, characterized in that: The strip-type debris discharging mechanism comprises a second reduction motor, a second roller shaft and a strip; The output shaft of the second reduction motor is connected to the second roller shaft, and a plurality of strips arranged at equal intervals are provided on the second roller shaft.

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