Quick hole opening device for coal skin sweeping

Abstract

This utility model relates to the field of coal sludge opening technology, specifically a quick coal sludge opening device, including a riser; multiple vertical strips are fixedly connected to the top of the riser; a slide rod is slidably installed inside the riser; a cylindrical cutter is fixedly connected to the bottom of the slide rod; a bearing seat is fixedly connected to the top of the slide rod and slidably connected to the vertical strips; an impact seat capable of impacting the bearing seat downwards is slidably installed on the top of the vertical strips; a top seat is threadedly installed on the top of the vertical strips; by impacting the top surface of the bearing seat downwards, the impact seat pushes the slide rod, the cutter seat, and the cutter to a lower height, and the cutter cuts the waste conveyor belt. Since the cutter has a cylindrical structure, it cuts a circular through hole of uniform size on the waste conveyor belt, thereby realizing the opening of the waste conveyor belt, facilitating the operation of the workers, and improving the efficiency of coal sludge replacement.

Description

Technical Field

[0001] This utility model relates to the field of coal shavings perforation technology, specifically a quick perforation device for coal shavings. Background Technology

[0002] Coal in coal mines is mainly transported using belt conveyors. However, coal can adhere to the belt conveyors. If coal enters the bearing housings of the drums or idlers, it will accelerate bearing wear. Material adhering to the surface of the drums or idlers will tear and fray the conveyor belt surface, accelerating wear and damage to the conveyor belt. Therefore, it is necessary to use a cleaner to remove the coal adhering to the belt conveyor.

[0003] Existing cleaners for cleaning belt conveyors mainly rely on the contact between the cleaner's cleaning belt and the conveyor belt to remove coal adhering to the conveyor. However, when cleaning coal conveyor belts, the existing cleaners experience rapid wear and require frequent replacements, resulting in high consumption of the cleaning belt.

[0004] In practice, in order to reduce the cost of consumable cleaning belts, old conveyor belts and cleaning belts are usually re-drilled and reused. When reusing old conveyor belts and cleaning belts, workers need to manually drill holes in the old belts with a knife. This makes each time the knife is used to drill holes take a long time, and there are safety hazards in the operation of the knife, which greatly affects production efficiency.

[0005] Therefore, a quick-opening device for sweeping coal shavings is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The quick opening device for sweeping coal skin according to this utility model includes a riser; a plurality of vertical strips are fixedly connected to the top of the riser; a slide rod is slidably installed inside the riser; a cylindrical cutter is fixedly connected to the bottom end of the slide rod; a bearing seat is fixedly connected to the top of the slide rod and slidably connected to the vertical strips; an impact seat capable of impacting the bearing seat downward is slidably installed on the top of the vertical strips; and a top seat is threadedly installed on the top of the vertical strips.

[0008] Preferably, a support plate is inserted into the inner ring of the top surface of the riser; the slide rod slides through the middle of the support plate; a first spring sleeved on the outer ring of the slide rod is provided between the top surface of the support plate and the bottom surface of the impact seat.

[0009] Preferably, a protective sleeve is threaded onto the outer ring of the bottom end of the riser; the protective sleeve is fitted around the outer ring of the blade holder and the cutting blade.

[0010] Preferably, a movable push cone is slidably mounted inside the cutter; a second spring is provided between the top surface of the push cone and the top surface of the inner cavity of the cutter.

[0011] Preferably, the top of the top seat has a grinding chamber; the bottom outer ring of the grinding chamber is surrounded by a plurality of whetstones for grinding the cutting blade.

[0012] Preferably, a retaining ring is threaded onto the top outer ring of the top seat; the top outer ring of the retaining ring is provided with a top cover that can rotate and rise; and an elastic rod is fixedly connected to the center of the bottom surface of the grinding chamber.

[0013] Preferably, the top surface of the cutter is provided with a plurality of positioning grooves; the bottom surface of the top cover is fixedly connected with a plurality of positioning blocks that match the positioning grooves.

[0014] The advantages of this utility model are:

[0015] 1. The quick-opening device for sweeping coal conveyor belt described in this utility model consists of a riser, a vertical strip, a slide bar, a cutter, a bearing seat, and an impact seat. The impact seat strikes the top surface of the bearing seat downwards, causing the bearing seat to push the slide bar, the cutter seat, and the cutter to descend. The cutter cuts the waste conveyor belt, and because the cutter has a cylindrical structure, it cuts a circular through hole of uniform size on the waste conveyor belt, thereby realizing the opening of the waste conveyor belt, facilitating the operation of the workers, and improving the efficiency of coal conveyor belt replacement.

[0016] 2. The quick-opening device for sweeping coal shavings described in this utility model is equipped with a push cone, a second spring, a retaining ring, and a guide rod. After the opening is completed, the elastic force of the second spring pushes the push cone to slide towards the bottom of the cutter, so that the bottom tip of the push cone extends out of the cutter and pushes out the circular waste material stuck inside the cutter. This realizes the cleaning of the waste material inside the cutter, which is conducive to the continuous opening work of the workers and improves the work efficiency of the workers. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the impact seat, impact base, support plate and spring No. 1 in this utility model;

[0021] Figure 4 This is an exploded structural diagram of the impact support and impact seat in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the cutting blade and blade holder in this utility model;

[0023] Figure 6 This is an exploded structural diagram of the cutting blade in this utility model;

[0024] Figure 7 This is a cross-sectional view of the cutting blade in this utility model;

[0025] Figure 8 This is a cross-sectional view of the top seat in this utility model;

[0026] Figure 9 This is an exploded structural diagram of the top seat in this utility model;

[0027] Figure 10 This is a schematic diagram of the whetstone structure in this utility model.

[0028] In the diagram: 1. Riser; 2. Vertical strip; 3. Slide rod; 4. Cutter; 5. Impact seat; 6. Impact seat; 7. Top seat; 8. Cutter holder; 9. Support plate; 10. Spring No. 1; 11. Protective cylinder; 12. Push cone; 13. Spring No. 2; 14. Retaining ring; 15. Guide rod; 16. Sharpening chamber; 17. Sharpening stone; 18. Fixing ring; 19. Top cover; 20. Elastic rod; 21. Positioning groove; 22. Positioning block; 601. Counterweight; 602. Holder. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] like Figures 1 to 5As shown, a quick-opening device for sweeping coal slag includes a riser 1; a plurality of vertical strips 2 are fixedly connected to the top of the riser 1; a slide rod 3 is slidably installed inside the riser 1; a cylindrical cutter 4 is fixedly connected to the bottom of the slide rod 3; a bearing seat 5 is fixedly connected to the top of the slide rod 3 and slidably connected to the vertical strips 2; an impact seat 6 capable of impacting the bearing seat 5 downward is slidably installed on the top of the vertical strips 2; and a top seat 7 is threadedly installed on the top of the vertical strips 2.

[0031] In some embodiments, multiple vertical strips 2 are arranged vertically and evenly around each other; the top outer ring of the multiple vertical strips 2 is threaded; the bottom inner ring of the top seat 7 is threaded to match the thread of the top outer ring of the vertical strips 2; a protruding post is fixedly connected to the middle of the bottom end of the top seat 7 and protrudes and inserts between the multiple vertical strips 2 to achieve the purpose of spreading the multiple vertical strips 2, thereby improving the overall firmness of the multiple vertical strips 2;

[0032] The center of the impact seat 5 is an impact plate located inside multiple vertical strips 2, and multiple limiting blocks located between two adjacent vertical strips 2 are fixed around the outer ring of the impact plate; the outer side of the impact seat 5 is an annular plate located outside multiple vertical strips 2, and the annular plate is locked to the limiting blocks by screws; the impact seat 5, composed of the impact plate, limiting blocks and annular plate, allows the impact seat 5 to slide along the vertical strips 2;

[0033] The center of the impact seat 6 is a cylindrical hammer 601, which is located inside multiple vertical strips 2. Multiple limiting blocks located between two adjacent vertical strips 2 are also fixed around the outer ring of the hammer 601. The outer side of the impact seat 6 is a grip 602 located outside the multiple vertical strips 2. The grip 602 is locked to the limiting blocks on the outer ring of the hammer 601 by screws. The inner diameter of the grip 602 is larger than the outer diameter of the top seat 7 and the impact seat 5, thereby effectively reducing the risk of finger injuries and pinching during operation.

[0034] The bottom outer ring of the slide rod 3 is threaded, and the blade holder 8 is threadedly installed on the bottom outer ring of the slide rod 3; the bottom inner ring of the cutter 4 is threaded, the top outer ring of the blade holder 8 is threaded, and the cutter 4 is threadedly installed on the bottom inner ring of the blade holder 8.

[0035] During the specific assembly, firstly, the slide rod 3 is fixed to the bottom surface of the impact plate of the impact seat 5 with screws. The slide rod 3 is then inserted into the riser 1 from the top, so that the limiting block of the outer ring of the impact seat 5 slides between two adjacent vertical strips 2. Then, the ring plate of the outer ring of the impact seat 5 is fitted onto the outer ring of multiple vertical strips 2, and the screw holes on the limiting block of the impact seat 5 are aligned with the screw holes on the ring plate, and then tightened with screws.

[0036] Next, the weight 601 is inserted into the middle of the multiple vertical strips 2, so that the limiting block of the outer ring of the weight 601 slides into the space between two adjacent vertical strips 2; then the grip 602 is put on the outer ring of the multiple vertical strips 2, so that the screw hole on the limiting block of the outer ring of the weight 601 is aligned with the screw hole on the grip 602, and then screws are used to lock it.

[0037] Finally, the top seat 7 is threaded onto the top of the multiple vertical strips 2, and the knife holder 8 is threaded onto the bottom end of the slide bar 3, and the cutter 4 is threaded onto the bottom inner ring of the knife holder 8; thus completing the assembly of the hole-opening device;

[0038] In practical use, the riser 1 is placed vertically on the waste conveyor belt, with the bottom end of the riser 1 aligned with the location on the waste conveyor belt where a hole needs to be made. The worker holds the riser 1 with one hand to keep it vertical, and with the other hand, holds the grip 602 and lifts it upwards, causing the grip 602 and the counterweight 601 to slide along the vertical strip 2 to the highest point. Then, the worker pulls the grip 602 down forcefully, causing the counterweight 601 to strike the top surface of the impact seat 5. This causes the impact seat 5 to push the slide rod 3, the knife holder 8, and the cutter 4 to descend. The cutter 4 cuts down the waste conveyor belt. Since the cutter 4 has a cylindrical structure, it cuts a circular through hole of uniform size on the waste conveyor belt, thus realizing the opening of the waste conveyor belt, which facilitates the worker's operation and improves the efficiency of coal lining replacement.

[0039] like Figures 2 to 4 As shown, a support plate 9 is inserted into the inner ring of the top surface of the riser 1; the slide rod 3 slides through the middle of the support plate 9; a first spring 10 is provided between the top surface of the support plate 9 and the bottom surface of the impact seat 5 and sleeved on the outer ring of the slide rod 3.

[0040] Furthermore, the top inner ring of the riser 1 is provided with multiple slots, and the slots are alternately arranged with the vertical strip 2. The support plate 9 is a circular structure, and the outer ring of the support plate 9 is fixed with multiple blocks that match the slots.

[0041] The hammer 601 strikes the top surface of the impact seat 5 downwards, causing the impact seat 5 to push the slide rod 3, the knife holder 8, and the cutter 4 to descend. At the same time, the impact seat 5 presses down on the first spring 10, causing the first spring 10 to compress and store force. After the impact of the hammer 601 ends, the first spring 10 returns to its original position, pushing the impact seat 5, the slide rod 3, the knife holder 8, and the cutter 4 to move upwards and return to their original positions. This not only makes it easier to operate the hammer 601 again, but also raises the cutter 4, which is beneficial for the next drilling operation.

[0042] Furthermore, when the opening device is not in use, the elastic force of the first spring 10 pushes the impact seat 5, the slide rod 3, the knife seat 8 and the cutter 4 to move upward, so that the cutter 4 is received at the bottom inner ring of the riser 1, thereby effectively protecting the cutter 4 and preventing the cutter 4 from being damaged.

[0043] like Figures 1 to 2 As shown, a protective sleeve 11 is threaded onto the outer ring of the bottom end of the riser 1; the protective sleeve 11 is sleeved on the outer ring of the cutter holder 8 and the cutter 4;

[0044] In some embodiments, the protective sleeve 11 surrounds and shields the blade holder 8 and the cutter 4, thereby effectively protecting the cutter 4 and preventing damage to the cutter 4 when it is not in use;

[0045] When making a hole, the hammer 601 strikes the impact seat 5, causing the slide rod 3, the knife holder 8 and the cutter 4 to slide downwards, so that the cutter 4 slides out of the protective cylinder 11 to cut and make a hole.

[0046] Furthermore, after the staff removes the protective sleeve 11, the blade holder 8 and the cutting blade 4 are directly exposed, making it convenient for the staff to replace and maintain the cutting blade 4.

[0047] like Figures 6 to 7 As shown, a lifting push cone 12 is slidably installed inside the cutter 4; a second spring 13 is provided between the top surface of the push cone 12 and the top surface of the inner cavity of the cutter 4.

[0048] In some embodiments, the inner ring of the cutter 4 is fixedly connected with multiple protrusions; the middle part of the push cone 12 is a cone rod, and the outer ring of the push cone 12 is fixedly connected with a circular plate; a retaining ring 14 is bolted to the bottom of the protrusions of the cutter 4; the inner ring diameter of the retaining ring 14 is smaller than the outer ring diameter of the push cone 12; a sliding hole is opened at the top of the push cone 12, and a guide rod 15 is fixedly connected to the top surface of the inner cavity of the cutter 4, and the guide rod 15 slides in conjunction with the sliding hole of the push cone 12;

[0049] When no hole-making operation is performed, the elastic force of the second spring 13 pushes the push cone 12 to slide towards the bottom of the cutter 4. The push cone 12 is blocked by the retaining ring 14, so that the push cone 12 is stationary inside the cutter 4, and the bottom tip of the push cone 12 extends out of the cutter 4.

[0050] When performing the hole-making operation, the cutter 4 slides downward to cut the hole. At this time, because the bottom end of the pusher cone 12 is blocked by the waste belt, the pusher cone 12 slides along the guide rod 15 towards the inside of the cutter 4, causing the second spring 13 to be compressed. The cutter 4 cuts a round through hole from the waste belt, and the cut round waste material will be stuck inside the cutter 4.

[0051] After the hole is drilled, the hole-drilling device is lifted. At this time, the elastic force of the second spring 13 pushes the push cone 12 to slide towards the bottom of the cutter 4, so that the bottom tip of the push cone 12 extends out of the cutter 4 and pushes out the circular waste material stuck inside the cutter 4. This achieves the cleaning of the waste material inside the cutter 4, which is beneficial for the continuous hole-drilling work of the workers and improves the work efficiency of the workers.

[0052] like Figure 1 , Figure 2 , Figures 8 to 10 As shown, a sharpening chamber 16 is provided on the top of the top seat 7; a plurality of sharpening stones 17 for sharpening the cutting blade 4 are arranged around the bottom outer ring of the sharpening chamber 16.

[0053] In some embodiments, the inner wall of the grinding chamber 16 is fixedly surrounded by a plurality of vertically arranged guide rails, the grinding stone 17 is provided with a sliding groove that matches the guide rails, and the side of the grinding stone 17 near the center of the grinding chamber 16 is the grinding surface, and a triangular grinding block is provided at the bottom of the side of the grinding stone 17 near the center of the grinding chamber 16 for grinding the cutting edge of the cutter 4.

[0054] In practical use, when the blade of the cutter 4 becomes dull, it becomes difficult to drill holes in the waste belt. At this time, the cutter 4 is removed from the cutter holder 8, and the push cone 12, the second spring 13, and the retaining ring 14 inside the cutter 4 are removed. Then the cutter 4 is inserted into the grinding chamber 16 so that the blade of the cutter 4 contacts the grinding stone 17. The cutter 4 is rotated so that the blade of the cutter 4 slides and rubs against the grinding stone 17, thereby achieving the grinding work of the cutter 4, which in turn facilitates the continuous drilling operation of the hole-drilling device.

[0055] like Figures 8 to 10 As shown, a retaining ring 18 is threaded onto the top outer ring of the top seat 7; a top cover 19 capable of rotation and lifting is provided on the top outer ring of the retaining ring 18; and an elastic rod 20 is fixedly connected to the center of the bottom surface of the grinding chamber 16.

[0056] Furthermore, the inner ring of the fixing ring 18 is threaded for installation with the top thread of the top seat 7; the top outer ring of the fixing ring 18 is provided with an annular groove; the bottom of the inner ring of the top cover 19 is fixed with an inwardly facing strip ring; the strip ring of the top cover 19 is located in the annular groove of the fixing ring 18, so that the top cover 19 can rotate and move up and down on the fixing ring 18.

[0057] The elastic rod 20 includes a base plate fixed in the middle of the bottom surface of the grinding chamber 16, an inner cylinder fixed to the top surface of the base plate, and an outer cylinder sleeved around the top of the inner cylinder; a No. 3 spring is installed inside the inner cylinder and the outer cylinder.

[0058] In practical use, when sharpening the cutter 4, insert the cutter 4 into the sharpening chamber 16 so that the cutter 4 fits on the top outer ring of the elastic rod 20; then fix the fixing ring 18 to the top of the top seat 7, and the top surface of the cutter 4 contacts the bottom surface of the top cover 19, so that the elastic rod 20 is compressed; when sharpening, the operator presses down the top cover 19, so that the cutter 4 descends to contact the whetstone 17, so that the elastic rod 20 is compressed. At the same time, the operator rotates the top cover 19, which drives the cutter 4 to rotate and rub against the whetstone 17 for sharpening; thus, it is convenient for the operator to rotate the cutter 4 and sharpen the cutter 4.

[0059] After the cutter 4 is polished, the retaining ring 18 is removed from the top of the top seat 7, so that the pressure on the elastic rod 20 is removed, the elastic rod 20 is reset, and the cutter 4 is pushed out from the inside of the polishing chamber 16, so that the operator can easily take out the cutter 4.

[0060] like Figures 5 to 8 As shown, the top surface of the cutter 4 is provided with a plurality of positioning grooves 21; the bottom surface of the top cover 19 is fixed with a plurality of positioning blocks 22 that match the positioning grooves 21.

[0061] Furthermore, after the cutter 4 is placed inside the grinding chamber 16, the retaining ring 18 is fixedly installed on the top of the top seat 7. When the top surface of the cutter 4 contacts the bottom surface of the top cover 19, the positioning block 22 on the bottom surface of the top cover 19 is engaged in the positioning groove 21 on the top surface of the cutter 4. Thus, when the top cover 19 is rotated, the cutter 4 can be effectively rotated, thereby further improving the efficiency of rotating the cutter 4.

[0062] Working principle: During assembly, insert the support plate 9 into the slot of the riser 1, and then fix the first spring 10 to the top surface of the support plate 9; fix the slide rod 3 to the bottom surface of the impact plate of the impact seat 5 with screws, insert the slide rod 3 into the riser 1 from the top of the riser 1, so that the limiting block of the outer ring of the impact seat 5 slides between two adjacent vertical strips 2; then put the ring plate of the outer ring of the impact seat 5 onto the outer ring of multiple vertical strips 2, align the screw holes on the limiting block of the impact seat 5 with the screw holes on the ring plate, and tighten with screws; then, place the counterweight 601. Insert the weight 601 into the middle of multiple vertical strips 2, so that the limiting block of the outer ring of the weight 601 slides between two adjacent vertical strips 2; then put the grip 602 on the outer ring of the multiple vertical strips 2, so that the screw hole on the limiting block of the outer ring of the weight 601 is aligned with the screw hole on the grip 602, and tighten it with screws; finally, thread the top seat 7 onto the top of the multiple vertical strips 2, and thread the knife holder 8 onto the bottom end of the slide bar 3, and thread the cutter 4 onto the bottom inner ring of the knife holder 8; thus completing the assembly of the hole-opening device;

[0063] When drilling, the riser 1 is placed vertically on the waste conveyor belt, with the bottom end of the riser 1 aligned with the location on the waste conveyor belt where the hole needs to be drilled. The worker holds the riser 1 with one hand to keep it vertical, and with the other hand, holds the handle 602 and lifts it upwards, causing the handle 602 and the counterweight 601 to slide along the vertical strip 2 to the highest point. Then, the worker pulls the handle 602 down forcefully, causing the counterweight 601 to strike the top surface of the impact seat 5, which in turn pushes the slide rod 3, the knife holder 8, and the cutter 4. As the height decreases, the cutter 4 cuts down the waste conveyor belt. Since the cutter 4 has a cylindrical structure, it cuts out a circular through hole of uniform size on the waste conveyor belt. After the hole is opened, the hole-opening device is lifted. At this time, the elastic force of the second spring 13 pushes the push cone 12 to slide towards the bottom of the cutter 4, so that the bottom tip of the push cone 12 extends out of the cutter 4, pushing out the circular waste material that is stuck inside the cutter 4. This achieves the opening of the waste conveyor belt, which is convenient for the operator and improves the efficiency of coal belt replacement.

[0064] When the blade of the cutter 4 becomes dull, it becomes difficult to drill holes in the waste belt. At this point, the cutter 4 is removed from the cutter holder 8, and the push cone 12, the second spring 13, and the retaining ring 14 inside the cutter 4 are removed. The cutter 4 is then inserted into the grinding chamber 16, so that the cutter 4 is fitted onto the top outer ring of the elastic rod 20. The fixing ring 18 is then fixedly installed on the top of the top seat 7, and the top surface of the cutter 4 contacts the bottom surface of the top cover 19, causing the elastic rod 20 to compress. During grinding, the operator presses down the top cover 19, causing the cutter 4 to descend to contact the whetstone 17, thus compressing the elastic rod 20. At the same time, the operator rotates the top cover 19, causing the cutter 4 to rotate and rub against the whetstone 17 for grinding. This makes it easier for the operator to rotate the cutter 4 and grind it.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A quick-opening device for sweeping coal slag, characterized in that: The device includes a riser; a plurality of vertical strips are fixedly connected to the top of the riser; a slide rod is slidably installed inside the riser; a cylindrical cutter is fixedly connected to the bottom end of the slide rod; a bearing seat is fixedly connected to the top of the slide rod and slidably connected to the vertical strips; an impact seat capable of impacting the bearing seat downwards is slidably installed on the top of the vertical strips; and a top seat is threadedly installed on the top of the vertical strips.

2. The quick-opening device for sweeping coal shavings according to claim 1, characterized in that: A support plate is inserted into the inner ring of the top surface of the riser; the slide rod slides through the middle of the support plate; a first spring is provided between the top surface of the support plate and the bottom surface of the impact seat, which is sleeved on the outer ring of the slide rod.

3. The quick-opening device for sweeping coal shavings according to claim 1, characterized in that: The slide rod has a blade holder threaded on its outer bottom ring; the cutter is threaded on the inner bottom ring of the blade holder; the riser has a protective sleeve threaded on its outer bottom ring; the protective sleeve is fitted around the outer ring of the blade holder and the cutter.

4. The quick-opening device for sweeping coal shavings according to claim 1, characterized in that: The cutter has a slidingly mounted, liftable push cone inside; a second spring is provided between the top surface of the push cone and the top surface of the cutter's inner cavity.

5. The quick-opening device for sweeping coal shavings according to claim 1, characterized in that: The top of the top seat has a grinding chamber; the bottom outer ring of the grinding chamber is surrounded by a plurality of whetstones for grinding the cutting blade.

6. The quick-opening device for sweeping coal shavings according to claim 5, characterized in that: The top outer ring of the top seat is threaded with a fixing ring; the top outer ring of the fixing ring is provided with a top cover that can rotate and rise; an elastic rod is fixedly connected to the middle of the bottom surface of the grinding chamber.

7. The quick-opening device for sweeping coal shavings according to claim 6, characterized in that: The top surface of the cutter is provided with multiple positioning grooves; the bottom surface of the top cover is fixed with multiple positioning blocks that match the positioning grooves.

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