Device and method for detecting disassembly strength of hot-melt briquette

Abstract

The invention discloses a device and a method for detecting the disassembly strength of a hot-melt briquette, and relates to the technical field of recycling of solid wastes in iron and steel enterprises, the device for detecting the disassembly strength of the hot-melt briquette comprises a detection unit, the detection unit comprises a fixed base, the top of the base is a conical collision block with an upward tip, a lifting unit used for conveying the hot-melt pressing block to the position above the collision block and releasing the hot-melt pressing block is arranged beside the base. According to the invention, the disassembly strength of the hot-melt briquette can be detected and quantified, so that a quantifiable standard is formed between a customer and a producer, the customer can quantify own demands, and the production efficiency is improved. The control of the raw material ratio and production process parameters of the hot-melt briquette is guided according to the actually measured value of the disassembly strength, so that the hot-melt briquette product produced by a producer is guided to meet the requirements of customers.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste recycling in steel enterprises, and in particular to a device and method for detecting the demolition resistance strength of hot-melt pressed blocks. Background Art

[0002] The production processes of integrated steel enterprises encompass coke ovens, sintering machines, blast furnaces, converters, rolling mills, and ferroalloy systems. These processes involve a wide range of disciplines, complex production processes, and lengthy logistics processes. This generates a wide variety of solid wastes, diverse in nature, and in significant quantities. Major solid wastes include over a dozen types of blast furnace slag, converter slag, iron-containing dust and sludge, and scale. Therefore, strengthening the recycling of metallurgical solid wastes and achieving resource utilization, reduction, and harmless treatment have become key production management goals for steel enterprises. Steel slag undergoes environmentally friendly processes such as slagging, crushing, grinding, and magnetic separation to produce granular steel and other recyclable products. With the global emphasis on environmental protection and sustainable development, the recycling of scrap metal resources has become a global consensus. Pressing granular steel through a mold under high temperature and high pressure to form hot-melt briquettes, achieving a certain degree of densification, is a key method for scrap metal recycling and holds significant market potential.

[0003] The degree of densification achieved by hot-melt compacts is reflected in the qualitative and measurable demolition strength. Pressure compacts the steel particles and powder materials and reduces porosity. Furthermore, the high temperature and long holding time enable the product to achieve a relative density exceeding 95%. After heating the materials, the required pressure is only one-third to one-half that of cold pressing. High temperature is the primary factor in achieving high-density consolidation. Controlling the heating temperature significantly influences the demolition strength of hot-melt compacts.

[0004] Currently, there are no devices or methods for testing the demolition strength of hot-melt briquettes, both domestically and internationally. This lack of testing methods and devices makes it impossible to quantify the demolition strength of produced hot-melt briquettes, making it impossible to ensure that the quality of the briquettes meets the needs of downstream customers and to guide the control of production process parameters for hot-melt briquettes. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a device and method for detecting the anti-dismantling strength of a hot melt press block, so as to detect the anti-dismantling strength of the hot melt press block and quantify the anti-dismantling strength.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A device for detecting the dismantling strength of a hot melt press block includes a detection unit, wherein the detection unit includes a fixed base, the top of the base is a conical impact block with a pointed end facing upward, and a lifting unit is provided on the side of the base for sending the hot melt press block to the top of the impact block and releasing it.

[0008] Furthermore, the lifting unit includes a fixed base, a column connected to the base, a box that can slide up and down along the column, and a grabbing mechanism connected to one side of the box for grabbing and releasing the hot melt block. When the hot melt block is released, the axis of the collision block and the axis of the overheated melt block are located on the same vertical straight line.

[0009] Furthermore, the gripping mechanism includes a cantilever fixedly connected to the box at one end and a fixed clamp fixedly connected to the other end of the cantilever. A movable clamp is provided next to the fixed clamp. The cantilever is provided with a cylinder for driving the movable clamp towards or away from the fixed clamp. After the movable clamp approaches the fixed clamp, it clamps the hot melt pressure block between the movable clamp and the fixed clamp.

[0010] Furthermore, the box body is slidably connected to the column, a vertical rack is fixedly connected to the column, a first gear is rotatably connected in the box body, the first gear is engaged with the rack, and a first reduction motor is provided on the box body in transmission connection with the first gear.

[0011] Furthermore, the column is rotatably connected to the base, and the base is provided with a driving mechanism for driving the column to rotate horizontally.

[0012] Furthermore, the driving mechanism includes a second gear fixedly connected to the column, a second reduction motor fixedly connected to the base, a third gear fixedly connected to the output shaft of the second reduction motor, and the third gear meshes with the second gear.

[0013] Furthermore, it also includes a compacting unit for re-compacting the hot-melt pressure blocks after impact damage, the compacting unit includes a seat plate and a frame fixedly connected to the seat plate, a circular arc-shaped lower clamping plate is fixedly connected to the seat plate, an arc-shaped upper clamping plate is provided above the lower clamping plate, the inner arc surface of the upper clamping plate is opposite to the inner arc surface of the lower clamping plate, and the frame is provided with a hydraulic cylinder for driving the upper clamping plate to move up and down.

[0014] Furthermore, the collision block is covered with a guide tube, and the inner diameter of the guide tube is larger than the outer diameter of the hot-melt pressing block.

[0015] A method for testing the demolition strength of a hot melt pressed block, using the above-mentioned device for testing the demolition strength of a hot melt pressed block, comprises the following steps:

[0016] S1, weigh the mass m1 of the hot melt pressing block, then place the hot melt pressing block between the fixed clamp and the movable clamp, and actuate the cylinder to clamp the hot melt pressing block between the fixed clamp and the movable clamp;

[0017] S2, the first reduction motor runs, driving the first gear to rotate, thereby causing the box to rise along the column, driving the hot melt pressing block to rise through the cantilever, and then the first reduction motor stops running;

[0018] S3, the second reduction motor runs, driving the column to rotate, so that the hot melt pressing block reaches the top of the collision block, and then the second reduction motor stops running;

[0019] S4, the cylinder is actuated, the movable clamp releases the hot melt pressing block, and the hot melt pressing block falls under the action of gravity, and the impact block is embedded in the bottom of the hot melt pressing block, causing the lower part of the hot melt pressing block to crack;

[0020] S5, the hot melt pressing block is turned upside down by 180 degrees and clamped between the movable clamp and the fixed clamp again, and step S4 is repeated;

[0021] S6, separating the cracked portion of the hot melt pressed block to form fragments;

[0022] S7, weigh the total weight of the broken pieces with a size of ≥120mm on the hot melt briquetting, and include the mass m2. The demolition strength is K, then K=m2 / m1×100.

[0023] Furthermore, S6 includes the following steps:

[0024] S6.1. Place the split hot melt compact between the upper and lower clamping plates. The hydraulic cylinder drives the upper clamping plate downward to squeeze and compact the split hot melt compact. The hydraulic cylinder then drives the upper clamping plate upward.

[0025] S6.2: The hot melt pressing block rotates 90° along its axis, and the hydraulic cylinder drives the upper clamping plate downward to squeeze the hot melt pressing block again;

[0026] S6.3, the hot melt pressing block is clamped between the fixed clamp and the movable clamp, and the hot melt pressing block is returned to the top of the impact block, and the hot melt pressing block is released;

[0027] S6.4, turn the hot melt block upside down 180 degrees and repeat step S6.3.

[0028] The positive effects of the present invention are:

[0029] The present invention can detect the demolition strength of hot-melt briquettes and quantify the demolition strength of hot-melt briquettes, thereby forming a quantifiable standard between customers and manufacturers, allowing customers to quantify their own needs, and guiding the control of raw material ratios and production process parameters of hot-melt briquettes based on the actually measured demolition strength values, thereby guiding manufacturers to produce hot-melt briquettes that meet customer needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the detection device;

[0031] Figure 2 It is a three-dimensional diagram of a hot melt compact;

[0032] Figure 3 This is a side view of the lower part of the hot melt pressing block after being hit by the impact block;

[0033] Figure 4 This is a side view of the hot melt pressing block after being hit by the impact block on both the top and bottom sides;

[0034] Figure 5 yes Figure 3 and Figure 4 Bottom view and Figure 4 A top view of

[0035] Figure 6 yes Figure 4 A side view of the hot melt compact after being compacted by the compacting unit;

[0036] Figure 7 yes Figure 6 Bottom and top views;

[0037] Figure 8 yes Figure 6 A cross-sectional view of the hot melt pressing block after being struck again by the impact block;

[0038] Figure 9 yes Figure 8 A top view of

[0039] Figure 10 is a side view of the compaction unit;

[0040] Figure 11 yes Figure 10 Right view of;

[0041] In the picture:

[0042] 1. Base; 2. Impact block; 3. Guide cylinder; 4. Lifting ear; 5. Cantilever; 6. Fixed clamp; 7. Hot melt pressure block; 8. Movable clamp; 9. Cylinder; 10. Column; 11. Rack; 12. Box; 13. First gear; 14. First reduction motor; 15. Base; 16. Second gear; 17. Third gear; 18. Second reduction motor; 19. Seat plate; 20. Lower clamp; 21. Upper clamp; 22. Frame; 23. Hydraulic cylinder. DETAILED DESCRIPTION

[0043] Example 1

[0044] like Figure 1As shown, a hot melt pressing block anti-demolition strength detection device includes a detection unit and a lifting unit arranged next to the detection unit. The detection unit includes a disc-shaped base 1 fixed to a concrete foundation by anchor bolts, and the top of the base 1 is a conical impact block 2 with a pointed end facing upward, and the axis of the impact block 2 is vertical.

[0045] The hot melt block 7 is made of particle steel, iron oxide, metallurgical dust and other waste materials in production, which are heated at high temperature and processed by pressure mold. Figure 2 The cylinder shown has a diameter of 235 mm and a height of 210 mm. The base 1 and the impact block 2 are cast in one piece of cast steel, and the cross-sectional shape of the base 1 is a convex letter shape. The upper part of the base 1 is provided with a vertical guide cylinder 3, which is used to guide the hot melt block 7 when it falls, so that the upper end of the impact block 2 hits the center of the hot melt block 7. The inner diameter of the guide cylinder 3 is larger than the outer diameter of the hot melt block 7, specifically 310 mm. Two hanging ears 4 are symmetrically welded on the upper part of the guide cylinder 3, and the bottom diameter of the cone where the impact block 2 is located is D. The top of the impact block 2 is a spherical surface, and the height of the impact block 2 is h, then D = 200 mm, h = 80 mm, and the corners between the bottom of the impact block 2 and the base 1 are rounded.

[0046] The working process of the present invention is:

[0047] 1. Weigh the mass m1 of the hot melt pressing block 7, then lift the hot melt pressing block 7 with the lifting unit and send it to the top of the collision block 2, so that the axis of the hot melt pressing block 7 and the axis of the collision block 2 are on the same straight line, and the distance H between the bottom surface of the hot melt pressing block 7 and the bottom surface of the collision block 2 is 3m. The position of the hot melt pressing block 7 at this time is the test position.

[0048] 2. The lifting unit loosens the hot melt pressing block 7, and the hot melt pressing block 7 falls downward under the action of gravity and performs free fall motion. The lower part of the collision block 2 is embedded in the bottom of the hot melt pressing block 7, causing the lower part of the hot melt pressing block 7 to crack radially, so that the hot melt pressing block 7 forms a Figure 3 and Figure 5 The shape shown.

[0049] 3. Remove the guide cylinder 3, turn the hot melt pressing block 7 up and down, and lift the unit to send the hot melt pressing block 7 back to the test position. Clean the debris generated by the collision, put it back into the guide cylinder 3, and then release the hot melt pressing block 7 again by the lifting unit. The hot melt pressing block 7 falls downward again under the action of gravity and performs free fall motion. The lower part of the collision block 2 is embedded in the bottom of the hot melt pressing block 7, causing the lower part of the hot melt pressing block 7 to crack radially, forming a Figure 4 and Figure 5 The shape shown.

[0050] 4. Knock off the cracked part of the hot-melt pressing block 7 from the root, and measure the size of the fragments that fall off from the hot-melt pressing block 7 during the two impacts. Select the fragments with a size of ≥120 mm, and weigh the total weight of these fragments, and include the mass m2. The demolition strength is K, then K = m2 / m1×100.

[0051] When transporting the hot melt compact 7, forklifts and trucks are required for loading and unloading. During the transportation and loading and unloading process, the hot melt compact 7 will be subjected to drops and collisions. The larger the K value, the less likely the hot melt compact 7 is to form small fragments during transportation and loading and unloading, indicating that the hot melt compact 7 has a higher strength and is less likely to break into debris during transportation and loading and unloading (the debris will be lost during transportation and loading and unloading). This increases the utilization rate of the hot melt compact 7 and reduces the loss during loading and unloading. However, the hot melt compact 7 with a high K value has a higher manufacturing cost and is therefore more expensive.

[0052] The customer places an order with the manufacturer based on their actual needs and specifies the K value of the hot melt briquettes 7 they order. The manufacturer first produces samples based on the customer's K value requirements, then tests the samples. Based on the actual K value of the samples, the manufacturer adjusts the ratio of the raw materials used to produce the hot melt briquettes 7, as well as the pressure and temperature during the molding of the hot melt briquettes 7, to ensure that the K value obtained from the tests meets the customer's requirements. The manufacturer then proceeds to batch production based on the order quantity.

[0053] Therefore, the present invention can detect the anti-disassembly strength of the hot melt press block 7 and quantify the anti-disassembly strength of the hot melt press block 7, thereby forming a quantifiable standard between the customer and the manufacturer, so that the customer can quantify his own needs and guide the manufacturer to produce the hot melt press block 7 that meets the customer's needs.

[0054] Example 2

[0055] The difference between this embodiment and embodiment 1 is that:

[0056] The lifting unit includes a base 15 fixed to a concrete foundation by anchor bolts, a column 10 disposed on the base 15, a box 12 slidably connected to the column 10, and a gripping mechanism connected to the left side of the box 12. The lower end of the column 10 is in transmission connection with the base 15.

[0057] The gripping mechanism includes a cantilever 5 whose right end is fixedly connected to the left side of the box body 12, and a fixed clamp 6 fixedly connected to the left end of the cantilever 5. A movable clamp 8 is slidably connected to the right side of the fixed clamp 6. Both the fixed clamp 6 and the movable clamp 8 are arc-shaped and arranged relative to each other. A horizontal cylinder 9 is provided on the cantilever 5 on the right side of the fixed clamp 6. The cylinder barrel of the cylinder 9 is fixedly connected to the cantilever 5, and the push rod of the cylinder 9 is fixedly connected to the right side of the movable clamp 8. After the movable clamp 8 approaches the fixed clamp 6 to the left under the drive of the cylinder 9, it clamps the hot melt block 7 located between the movable clamp 8 and the fixed clamp 6. At this time, the axis of the collision block 2 and the axis of the overheated melt block 7 are located on the same vertical straight line.

[0058] A vertical rack 11 is fixedly connected to the front side of the column 10, and a first gear 13 is rotatably connected inside the box 12. The first gear 13 is engaged with the rack 11. A first reduction motor 14 is fixedly provided outside the box 12, and the first reduction motor 14 and the first gear 13 are connected via a transmission shaft.

[0059] When the first reduction motor 14 is running, the cooperation between the first gear 13 and the rack 11 can drive the box 12 to move vertically, thereby driving the cantilever 5 and the hot melt pressing block 7 clamped between the fixed clamp 6 and the movable clamp 8 to move vertically, thereby facilitating the adjustment of the height of the hot melt pressing block 7.

[0060] The first reduction motor 14 adopts a worm gear reducer and has a self-locking function, so that after the first reduction motor 14 stops running, the cantilever 5 will not slide down under the action of gravity.

[0061] A drive mechanism for driving the horizontal rotation of the column 10 is located beneath the base 15. The drive mechanism includes a second gear 16 fixedly connected to the lower end of the column 10. A second reduction motor 18 is fixedly connected to the base 15. A third gear 17 is fixedly connected to the output shaft of the second reduction motor 18, meshing with the second gear 16. A pit is provided beneath the base 15 within the concrete foundation. The second gear 16, third gear 17, and second reduction motor 18 are all located within the pit. The second reduction motor 18 is also a worm gear reducer.

[0062] When the second reduction motor 18 is running, it drives the column 10 to rotate horizontally, thereby driving the fixed clamp 6 and the movable clamp 8 to rotate horizontally around the column 10, so as to facilitate the grabbing of the hot melt pressing block 1 placed on the flat car beside the base 1.

[0063] Example 3

[0064] like Figures 6 to 11 As shown, the difference between this embodiment and embodiment 2 is that:

[0065] It also includes a compacting unit for re-compacting the hot melt pressure block 7 after impact damage, and the compacting unit includes a seat plate 19 and a frame 22 fixedly connected to the seat plate 19, and a circular arc-shaped lower clamping plate 20 is fixedly connected to the seat plate 19, and a circular arc-shaped upper clamping plate 21 is provided above the lower clamping plate 20, and the inner arc surface of the upper clamping plate 21 is opposite to the inner arc surface of the lower clamping plate 20, and a vertical hydraulic cylinder 23 is fixedly connected to the top of the frame 22, and the push rod of the hydraulic cylinder 23 passes downward through the top of the frame 22 and is clearance-matched with the frame 22.

[0066] When both ends of the hot melt pressing block 7 are hit, a Figure 4 and Figure 5 After the shape is shown, the cracked hot-melt pressing block 7 is placed between the upper splint 21 and the lower splint 20, and the hydraulic cylinder 23 drives the upper splint 21 to move downward to squeeze the cracked hot-melt pressing block 7. Due to the brittleness of the hot-melt pressing block 7 itself, the radially cracked part of the hot-melt pressing block 7 will first be broken from the root and form fragments, and then continue to be squeezed and can be squeezed into one piece. However, at this time, the bonding force between the fragments is small, and they can be dispersed after being impacted and thrown.

[0067] Then the hydraulic cylinder 23 drives the upper clamping plate 21 to move upward, and the hot melt pressing block 7 rotates 90 degrees along its axis. The hydraulic cylinder 23 drives the upper clamping plate 21 to move downward, and the hot melt pressing block 7 is squeezed again.

[0068] The middle portion of the compacted hot melt block 7 is then clamped between the fixed clamp 6 and the movable clamp 8, and the hot melt block 7 is raised to the test position. The air cylinder 9 is actuated, releasing the hot melt block 7, and the impact block 2 strikes the lower portion of the hot melt block 7, causing the fragments to disperse and separate from the main body of the hot melt block 7. The hot melt block 7 is then turned upside down 180°, and the impact block 2 strikes the other portion of the hot melt block 7, causing the fragments to disperse and separate from the main body of the hot melt block 7.

[0069] Therefore, in this embodiment, it is not necessary to knock the radially cracked parts off from the main body of the hot melt pressing block 7 one by one, thereby improving the detection efficiency.

[0070] Example 4

[0071] A method for testing the demolition strength of a hot melt press block, using the hot melt press block demolition strength testing device described in Example 3, comprises the following steps:

[0072] S1, weigh the mass m1 of the hot melt pressing block 7, then place the hot melt pressing block 7 between the fixed clamp 6 and the movable clamp 8, and actuate the cylinder 9 to clamp the hot melt pressing block 7 between the fixed clamp 6 and the movable clamp 8;

[0073] S2, the first reduction motor 14 runs, driving the first gear 13 to rotate, thereby causing the box 12 to rise along the column 10, driving the hot melt pressing block 7 to rise through the cantilever 5, and then the first reduction motor 14 stops running;

[0074] S3, the second reduction motor 18 is running, driving the column 10 to rotate in the horizontal plane, so that the hot melt pressing block 7 reaches the top of the collision block 2, so that the axis of the hot melt pressing block 2 and the axis of the collision block 2 are located on the same vertical line, and then the second reduction motor 18 stops running;

[0075] S4, the cylinder 9 moves, driving the movable clamp 8 to move to the right, the movable clamp 8 loosens the hot melt pressing block 7, and the hot melt pressing block 7 falls freely under the action of gravity, doing free fall motion, and the collision block 2 is embedded in the bottom of the hot melt pressing block 7, causing the lower part of the hot melt pressing block 7 to crack, forming Figure 3 and Figure 5 The shape shown;

[0076] S5, the hot melt pressing block 7 is turned upside down by 180 degrees and clamped between the movable clamp 8 and the fixed clamp 6 again, and step S4 is repeated so that another part of the hot melt pressing block 7 is hit by the collision block 2, and the hot melt pressing block 7 is formed. Figure 4 and Figure 5 The shape shown;

[0077] S6, separating the cracked parts of the hot melt pressed block 7 to form fragments, the specific steps are as follows:

[0078] S6.1: Place the hot melt pressing block 7 with its ends split between the upper and lower clamping plates 21 and 20. The hydraulic cylinder 23 actuates, moving the upper clamping plate 21 downward to squeeze and compact the split hot melt pressing block 7. The hydraulic cylinder 23 then moves the upper clamping plate 21 upward.

[0079] S6.2, the hot melt pressing block 7 is rotated 90 degrees along its axis, and the hydraulic cylinder 23 drives the upper clamping plate 21 to move downward, and the hot melt pressing block 7 is squeezed again, so that the hot melt pressing block 7 is formed. Figure 6 and Figure 7 The shape shown;

[0080] S6.3, the hot melt pressing block 7 is clamped between the fixed clamp 6 and the movable clamp 8, so that the hot melt pressing block 7 returns to the top of the collision block 2, and the hot melt pressing block 7 is released;

[0081] S6.4, turn the hot melt block 7 upside down 180 degrees, and repeat step S6.3; the hot melt block 7 is impacted to form several pieces, such as Figure 8 and Figure 9 shown.

[0082] S7, weigh the total weight of the fragments with a size of ≥120 mm produced in the above steps, add the mass m2, and let the demolition strength be K, then K=m2 / m1×100, thereby completing the test of the demolition strength of the hot-melt pressed block 7.

[0083] The above-mentioned embodiments are described in a relatively detailed and specific manner, expressing preferred embodiments of the present invention. They are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, they are not limited to the present invention alone, and the patent scope of the present invention cannot be limited solely by these embodiments. That is, any equivalent changes or modifications made to the spirit disclosed by the present invention, for researchers or technicians in this field, without departing from the structure of the present invention, local improvements within the system and changes and conversions between subsystems, etc., are still within the patent scope of the present invention.

Claims

1. A hot melt block demolition strength detection device, characterized in that: The detection unit comprises a fixed base, the top of the base is a conical impact block (2) with a pointed end facing upwards, and a lifting unit is provided on one side of the base for sending a hot melt pressing block (7) to the top of the impact block (2) and releasing it.

2. A hot melt block demolition strength detection device according to claim 1, characterized in that: The lifting unit comprises a fixed base (15), a column (10) connected to the base (15), a box (12) that can slide up and down along the column (10), and a grabbing mechanism connected to one side of the box (12) for grabbing and releasing the hot melt pressure block (7). When the hot melt pressure block (7) is released, the axis of the collision block (2) and the axis of the overheated melt pressure block (7) are located on the same vertical straight line.

3. A hot melt block demolition strength detection device according to claim 2, characterized in that: The gripping mechanism comprises a cantilever (5) having one end fixedly connected to a box (12) and a fixed clamp (6) fixedly connected to the other end of the cantilever (5); a movable clamp (8) is provided on one side of the fixed clamp (6); a cylinder (9) is provided on the cantilever (5) for driving the movable clamp (8) to approach or move away from the fixed clamp (6); and when the movable clamp (8) approaches the fixed clamp (6), the hot melt pressing block (7) located between the movable clamp (8) and the fixed clamp (6) is clamped.

4. A hot melt block demolition strength detection device according to claim 3, characterized in that: The box body (12) is slidably connected to the column (10), a vertical rack (11) is fixedly connected to the column (10), a first gear (13) is rotatably connected in the box body (12), the first gear (13) is meshed with the rack (11), and a first reduction motor (14) is provided on the box body (12) and is transmission-connected to the first gear (13).

5. A hot melt block demolition strength detection device according to claim 4, characterized in that: The column (10) is rotatably connected to the base (15), and the base (15) is provided with a driving mechanism for driving the column (10) to rotate horizontally.

6. A hot melt block demolition strength testing device according to claim 5, characterized in that: The driving mechanism comprises a second gear (16) fixedly connected to the column (10), a second reduction motor (18) fixedly connected to the base (15), a third gear (17) fixedly connected to the output shaft of the second reduction motor (18), and the third gear (17) meshing with the second gear (16).

7. The device for detecting the demolition strength of a hot melt pressing block according to claim 6, characterized in that: The invention also includes a compacting unit for re-compacting the hot melt pressing block (7) after impact damage, wherein the compacting unit includes a seat plate (19) and a frame (22) fixedly connected to the seat plate (19), wherein a circular arc-shaped lower clamping plate (20) is fixedly connected to the seat plate (19), and an arc-shaped upper clamping plate (21) is provided above the lower clamping plate (20), and the inner arc surface of the upper clamping plate (21) is opposite to the inner arc surface of the lower clamping plate (20), and a hydraulic cylinder (23) is provided on the frame (22) for driving the upper clamping plate (21) to move up and down.

8. The device for detecting the demolition strength of a hot melt block according to claim 1, characterized in that: The collision block (2) is covered with a guide cylinder (3), and the inner diameter of the guide cylinder (3) is larger than the outer diameter of the hot-melt pressing block (7).

9. A method for testing the demolition strength of hot melt briquettes, characterized in that: The method of using the hot melt block demolition strength detection device according to claim 7 comprises the following steps: S1, weighing the mass m1 of the hot melt pressing block (7), then placing the hot melt pressing block (7) between the fixed clamp (6) and the movable clamp (8), and operating the cylinder (9) to clamp the hot melt pressing block (7) between the fixed clamp (6) and the movable clamp (8); S2, the first reduction motor (14) runs, driving the first gear (13) to rotate, thereby causing the box (12) to rise along the column (10), driving the hot melt pressing block (7) to rise through the cantilever (5), and then the first reduction motor (14) stops running; S3, the second reduction motor (18) runs, driving the column (10) to rotate, so that the hot melt pressing block (7) reaches the top of the collision block (2), and then the second reduction motor (18) stops running; S4, the cylinder (9) is actuated, the movable clamp (8) loosens the hot melt pressing block (7), the hot melt pressing block (7) falls under the action of gravity, and the collision block (2) is embedded in the bottom of the hot melt pressing block (7), causing the lower part of the hot melt pressing block (7) to crack; S5, the hot melt pressing block (7) is turned upside down by 180 degrees and clamped again between the movable clamp (8) and the fixed clamp (6), and step S4 is repeated; S6, separating the cracked portion of the hot melt pressed block (7) to form fragments; S7, weigh the total weight of the broken pieces with a size of ≥120 mm on the hot melt briquette (7), and calculate the mass m2. The demolition strength is K, then K=m2 / m1×100.

10. A method for testing the demolition strength of hot melt briquettes according to claim 9, characterized in that: S6 includes the following steps: S6.1, the cracked hot melt pressing block (7) is placed between the upper clamping plate (21) and the lower clamping plate (20), the hydraulic cylinder (23) drives the upper clamping plate (21) to move downward, squeezes the cracked hot melt pressing block (7), and compacts the cracked hot melt pressing block (7), and then the hydraulic cylinder (23) drives the upper clamping plate (21) to move upward; S6.2, the hot melt pressing block (7) rotates 90° along its axis, and the hydraulic cylinder (23) drives the upper clamping plate (21) to move downward, squeezing the hot melt pressing block (7) again; S6.3, the hot melt pressing block (7) is clamped between the fixed clamp (6) and the movable clamp (8), so that the hot melt pressing block (7) returns to the top of the collision block (2), and the hot melt pressing block (7) is released; S6.4, turn the hot melt pressing block (7) upside down by 180 degrees and repeat step S6.3.

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