A mixing device for viscous granular explosives

Abstract

This invention relates to the field of mixing technology and discloses a mixing device for viscous granular explosives, comprising a left mixing plate, a mixing cylinder, a right mixing plate, and an outer cylinder. The two ends of the mixing cylinder are rotatably connected to the left and right mixing plates, respectively. A spiral mixing blade is rotatably arranged inside the mixing cylinder. Two feeding windows are provided on the mixing cylinder, symmetrically arranged about the axis of the mixing cylinder. The outer cylinder is fitted onto the mixing cylinder and is detachably connected to it. An arc-shaped protrusion is fixed to the inner wall of the outer cylinder at the position corresponding to the feeding window. The arc-shaped protrusion fits into the feeding window, and its inner wall is flush with the inner wall of the mixing cylinder. This facilitates the cleaning of explosive raw materials adhering to the mixing device, improves utilization, reduces waste, and avoids mixing of raw materials from different explosives, thus improving the production quality of explosives.

Description

Technical Field

[0001] This invention relates to the field of mixing technology, specifically to a mixing device for viscous granular explosives. Background Technology

[0002] Sticky explosives possess both flowability and adhesion, along with excellent explosive performance, making them suitable for use in upward-facing holes in underground mines, reducing rework and labor intensity. A ladder-free sticky granular explosive has been developed, made by mixing porous ammonium nitrate with diesel fuel and a binding sensitizer. The added binding sensitizer is a mixture of methylamine nitrate and polyacrylamide. Since the added methylamine nitrate is a single-element explosive, it increases the cost and safety risks. Similar to other types of explosives, mixing is performed using a mixing device, typically employing spiral blades. Due to the inherent adhesiveness of sticky explosives, some materials adhere to the inner wall of the mixing device and the spiral blades. Existing mixing devices lack effective methods to handle this adhesion, resulting in significant waste. Furthermore, when producing other types of explosives, the sticky material adhering to the mixing device affects the formulation ratio, significantly impacting the quality of the produced explosive. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a mixing device for viscous granular explosives, which facilitates the cleaning of explosive raw materials adhering to the mixing device, improves utilization rate, reduces waste, and avoids mixing of raw materials from different explosives, thereby improving the production quality of explosives.

[0004] The objective of this invention is achieved through the following technical solution: a mixing device for viscous granular explosives, comprising a left mixing plate, a mixing cylinder, a right mixing plate, and an outer cylinder. The two ends of the mixing cylinder are rotatably connected to the left and right mixing plates, respectively. A spiral mixing blade is rotatably arranged inside the mixing cylinder. Two feeding windows are provided on the mixing cylinder, and the two feeding windows are symmetrically arranged about the axis of the mixing cylinder. The outer cylinder is fitted onto the mixing cylinder and is detachably connected to the mixing cylinder. An arc-shaped protrusion is fixed on the inner wall of the outer cylinder corresponding to the position of the feeding window. The arc-shaped protrusion is adapted to fit inside the feeding window, and the inner wall of the arc-shaped protrusion is flush with the inner wall of the mixing cylinder.

[0005] In some embodiments, both the left and right mixing plates are provided with circular grooves, and a turntable is rotatably disposed in the circular grooves. The two ends of the mixing cylinder are detachably connected to the two turntables respectively.

[0006] In some embodiments, the mixing cylinder includes two cylindrical semi-cylinders, each cylindrical semi-cylinder having a through hole on the inner wall of the feed window, the through hole extending through the axial direction of the mixing cylinder, the turntable having a threaded hole, and the cylindrical semi-cylinders being connected to the turntable by a long bolt, the long bolt passing through the through hole and threadedly connected to the threaded hole.

[0007] In some embodiments, the outer cylinder includes two semi-cylinders, with short bolts passing through the semi-cylinders, and the outer wall of the mixing cylinder has an internal threaded hole, with the short bolt threaded into the internal threaded hole.

[0008] In some embodiments, four limiting blocks are slidably disposed on the inner wall of the circular groove, the four limiting blocks are evenly distributed along the circumference of the circular groove, the limiting blocks move radially along the turntable, and four limiting grooves are formed on the outer wall of the turntable, the four limiting grooves are evenly distributed along the circumference of the turntable, and the limiting blocks are adapted to the limiting grooves.

[0009] In some embodiments, a driving groove is formed on the inner wall of the circular groove corresponding to the position of the limiting block. An electromagnet is provided in the driving groove. The movement and sliding of the limiting block are adapted to the driving groove. A permanent magnet is provided at one end of the limiting block near the electromagnet. A spring is provided in the driving groove. The spring is located between the electromagnet and the permanent magnet. The spring is connected to the limiting block. When the electromagnet is energized, it generates magnetism opposite to the magnetic pole of the permanent magnet. When the spring is in its normal state, the limiting block is adapted to the limiting groove.

[0010] In some embodiments, the turntable is rotatably connected to a mixing shaft, the spiral mixing blades are fixed on the mixing shaft, a hollow shaft is coaxially fixed at the end of the turntable away from the mixing cylinder, the mixing shaft movably passes through the hollow shaft, a main shaft is rotatably mounted on the left mixing plate, a small gear is mounted on the main shaft, a large gear is mounted on the hollow shaft on the left mixing plate, and the large gear meshes with the small gear.

[0011] In some embodiments, a first drive disk is slidably sleeved on the main shaft. A plurality of first helical teeth are fixed on the end face of the first drive disk. The plurality of first helical teeth are evenly distributed along the circumferential direction of the first drive disk, and a first tooth groove is formed between two adjacent first helical teeth. A motor is mounted on the left mixing plate. The output shaft of the motor is connected to a second drive disk. A plurality of second helical teeth are fixed on the end face of the second drive disk near the first drive disk. The plurality of second helical teeth are evenly distributed along the circumferential direction of the second drive disk, and a second tooth groove is formed between two adjacent second helical teeth. The first helical teeth are adapted to the second tooth groove, and the second helical teeth are adapted to the first tooth groove. An mounting ring is fixedly sleeved on the main shaft. An abutment spring is sleeved on the main shaft. The two ends of the abutment spring are respectively connected to the mounting ring and the first drive disk. When the first drive disk is engaged with the second drive disk, the abutment spring is in a compressed state.

[0012] In some embodiments, one end of the mixing shaft is driven to the output shaft of the mixing motor, the outer cylinder is connected to a feed pipe and a discharge pipe, both the feed pipe and the discharge pipe are equipped with electromagnetic valves, the mixing cylinder has a feed hole corresponding to the position of the feed pipe, and the mixing cylinder has a discharge hole corresponding to the position of the discharge pipe.

[0013] The beneficial effects of this invention are:

[0014] Two large feed windows are symmetrically arranged on the mixing cylinder. After the viscous explosives are mixed, the outer cylinder is removed, and the explosive raw materials adhering to the inner wall can be easily collected through the feed windows. At the same time, the cleaning device can also enter the mixing device through the feed windows to clean the adhering explosive raw materials, which improves the utilization rate, reduces waste, and avoids the mixing of raw materials from different explosives, thus improving the production quality of explosives. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of a viscous granular explosive mixing device according to the present invention;

[0016] Figure 2 This is a schematic diagram of the mixing cylinder in a viscous granular explosive mixing device of the present invention;

[0017] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 4 for Figure 1 Enlarged view at point B in the middle;

[0019] Figure 5 for Figure 1 Enlarged view at point C;

[0020] Figure 6 This is a schematic diagram showing the connection between the mixing cylinder and the outer cylinder in a viscous granular explosive mixing device of the present invention;

[0021] In the diagram, 1-left mixing plate, 2-mixing cylinder, 3-right mixing plate, 4-outer cylinder, 5-spiral mixing blade, 6-feed window, 7-arc-shaped protrusion, 8-circular groove, 9-turntable, 10-through hole, 11-threaded hole, 12-long bolt, 13-short bolt, 14-internal threaded hole, 15-limiting block, 16-limiting groove, 17-drive groove, 18-electromagnet, 19-spring, 20-permanent magnet, 21-mixing shaft, 22-hollow shaft, 23-main shaft, 24-small gear, 25-large gear, 26-first drive disc, 27-first helical gear, 28-motor, 29-second drive disc, 30-second helical gear, 31-mounting ring, 32-abutment spring, 33-mixing motor, 34-feed pipe, 35-discharge pipe, 36-feed hole, 37-discharge hole. Detailed Implementation

[0022] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0023] like Figures 1 to 6As shown, a mixing device for viscous granular explosive includes a left mixing plate 1, a mixing cylinder 2, a right mixing plate 3, and an outer cylinder 4. The two ends of the mixing cylinder 2 are rotatably connected to the left mixing plate 1 and the right mixing plate 3, respectively. A spiral mixing blade 5 is rotatably arranged inside the mixing cylinder 2. Two feeding windows 6 are opened on the mixing cylinder 2, symmetrically arranged about the axis of the mixing cylinder 2. The outer cylinder 4 is fitted onto the mixing cylinder 2 and is detachably connected to it. An arc-shaped protrusion 7 is fixed on the inner wall of the outer cylinder 4 corresponding to the position of the feeding window 6. The arc-shaped protrusion 7 fits into the feeding window 6, and its inner wall is flush with the inner wall of the mixing cylinder 2. This allows the various raw materials of the viscous explosive to be fed into the mixing cylinder. The raw materials are mixed inside the mixing cylinder 2 by rotating spiral mixing blades 5. The feed window 6 is relatively large, allowing the cleaning mechanism to enter. Due to the special nature of explosives, heating and drying methods cannot be used to dry the raw materials and remove their stickiness. On the one hand, explosives require high temperatures and ignition sources to ensure safety; on the other hand, drying would cause the raw materials to lose their explosive properties. Therefore, it is necessary to consider how to solve the problem of sticky explosive raw materials from a mechanical perspective. To this end, a large feed window 6 is provided on the mixing cylinder 2. This allows highly viscous materials to fall out through the feed window 6 and provides ample space for cleaning the materials adhering to the spiral mixing blades 5 and inside the mixing cylinder 2. The raw materials adhered to the wall, and the feed window 6 could not be properly mixed. Therefore, an outer cylinder 4 was fitted around the mixing cylinder 2, and an arc-shaped protrusion 7 was provided on the outer cylinder 4 to block the feed window 6, so that the spiral mixing blades 5 could smoothly contact the inner wall of the mixing cylinder 2 to form a spiral mixing structure. After the viscous explosive was mixed and discharged, the mixing cylinder 2 was cleaned. The inner space of the mixing cylinder 2 was exposed by removing the outer cylinder 4. Cleaning was generally carried out by air pressure, that is, by using a jet pipe connected to a high-pressure gas cylinder to blow out a high-speed airflow to blow down and discharge the raw materials adhering to the inner wall of the mixing cylinder 2 and the spiral mixing blades 5. The obstruction of the spiral mixing blade 5 prevents proper exposure of the inner wall of the mixing cylinder 2. Therefore, the mixing cylinder 2 is rotated so that it remains fixed during mixing and does not rotate with the spiral mixing blade 5. During cleaning, the mixing cylinder 2 is rotated so that different positions of the mixing cylinder 2 can avoid the spiral mixing blade 5. Two feed windows 6 are symmetrically arranged so that even when the mixing cylinder 2 rotates, the inside of the mixing cylinder 2 can always be cleaned through the upper feed window 6. Thus, through the structural optimization of the mixing device, it is convenient to perform subsequent processing of sticky explosives, improves utilization, reduces waste, and avoids mixing of raw materials from different explosives, thereby improving the production quality of explosives.

[0024] Furthermore, such as Figure 1As shown, both the left mixing plate 1 and the right mixing plate 3 are provided with circular grooves 8. A turntable 9 is rotatably installed in the circular groove 8. The two ends of the mixing cylinder 2 are detachably connected to the two turntables 9 respectively. The rotation of the turntables 9 can drive the mixing cylinder 2 to rotate, thereby switching the position of the mixing cylinder 2 so that different positions of the mixing cylinder 2 can be staggered and avoid the obstruction of the spiral mixing blades 5.

[0025] In some embodiments, such as Figures 1 to 3 As shown, the mixing cylinder 2 includes two cylindrical semi-cylinders. Each cylindrical semi-cylinder has a through hole 10 on its inner wall at the feed window 6, extending axially along the mixing cylinder 2. A threaded hole 11 is provided on the turntable 9. The cylindrical semi-cylinders are connected to the turntable 9 by long bolts 12, which pass through the through hole 10 and are threaded into the threaded hole 11. The outer cylinder 4 includes two semi-cylinders, each with a short bolt 13. An internal threaded hole 14 is provided on the outer wall of the mixing cylinder 2, and the short bolt 13 is threaded into the internal threaded hole 14, dividing the outer cylinder 4 into two unconnected semi-cylinders. This allows the cylinder to be removed from the cylindrical mixing cylinder 2. By unscrewing the short bolts 13, the two semi-cylinders can be removed from the mixing cylinder 2, exposing the feed window 6 for cleaning. When producing other types of explosives, it is necessary to ensure… The mixing cylinder 2 is cleaned sufficiently. Therefore, the mixing cylinder 2 is also designed as a detachable structure, which allows the mixing cylinder 2 to be disassembled and its inner wall cleaned directly, making the cleaning more thorough and further reducing waste. Specifically, by designing the mixing cylinder 2 as two unconnected cylindrical half-cylinders, after removing the outer cylinder 4, the two cylindrical half-cylinders can be removed by unscrewing the long bolt 12, so that the inner wall of the cylindrical half-cylinders can be completely cleaned, ensuring the cleanliness of the inside of the mixing cylinder 2 and preventing the mixing of different explosives, thus improving the production quality of explosives. Secondly, the through hole 10 is a stepped hole, including a large-diameter countersunk hole and a small-diameter bolt hole. The screw body of the long bolt 12 is adapted to the bolt hole, and the screw head of the long bolt 12 is located in the countersunk hole, thus hiding the long bolt 12, so that the arc-shaped protrusion 7 can be completely adapted to the feed window 6 without interfering with the long bolt 12.

[0026] In some embodiments, such as Figures 1 to 4As shown, four limiting blocks 15 slide through the inner wall of the circular groove 8. The four limiting blocks 15 are evenly distributed along the circumference of the circular groove 8 and move radially along the turntable 9. The outer wall of the turntable 9 has four limiting grooves 16, which are evenly distributed along the circumference of the turntable 9. The limiting blocks 15 are fitted into the limiting grooves 16. By moving the limiting blocks 15, the state of the turntable 9 can be controlled, thereby controlling the state of the mixing cylinder 2. Specifically, when the explosive raw materials are mixed in the mixing cylinder 2, the limiting blocks 15 are fitted into the limiting grooves 16, thereby locking the position of the turntable 9 and preventing the turntable 9 from rotating, thus preventing the mixing cylinder 2 from rotating. When cleaning the mixing cylinder 2 and the mixing cylinder 2 needs to rotate, the limiting blocks 15 move away from the limiting grooves 16, thereby unlocking the rotational freedom of the turntable 9 and allowing the mixing cylinder 2 to rotate, which facilitates the cleaning of sticky explosive raw materials.

[0027] Furthermore, such as Figure 1 and Figure 4 As shown, a drive groove 17 is provided on the inner wall of the circular groove 8 corresponding to the position of the limiting block 15. An electromagnet 18 is installed in the drive groove 17. The movement and sliding of the limiting block 15 are adapted to the drive groove 17. A permanent magnet 20 is provided at the end of the limiting block 15 near the electromagnet 18. A spring 19 is provided in the drive groove 17. The spring 19 is located between the electromagnet 18 and the permanent magnet 20. The spring 19 is connected to the limiting block 15. When the electromagnet 18 is energized, it generates a magnetism opposite to the magnetic pole of the permanent magnet 20. When the spring 19 is in a normal state... When in the normal state, the limiting block 15 is fitted into the limiting groove 16. During mixing, the electromagnet 18 is de-energized, and the limiting block 15 extends out of the drive groove 17 and fits into the limiting groove 16 under the action of the spring 19, restricting the rotational freedom of the turntable 9. During cleaning, the electromagnet 18 is energized to attract the permanent magnet 20, causing the permanent magnet 20 to drive the limiting block 15 to move into the drive groove 17, separating the limiting block 15 from the limiting groove 16, thereby enabling the turntable 9 to rotate and unlocking the rotational freedom of the mixing cylinder 2.

[0028] In some embodiments, such as Figures 1 to 5As shown, a mixing shaft 21 is rotatably mounted on a turntable 9, and spiral mixing blades 5 are fixed on the mixing shaft 21. A hollow shaft 22 is coaxially fixed at the end of the turntable 9 away from the mixing cylinder 2, and the mixing shaft 21 moves through the hollow shaft 22. A main shaft 23 is rotatably mounted on the left mixing plate 1, and a small gear 24 is mounted on the main shaft 23. A large gear 25 is mounted on the hollow shaft 22 on the left mixing plate 1, and the large gear 25 meshes with the small gear 24. A first drive disc 26 is slidably mounted on the main shaft 23, and several first helical teeth 27 are fixed on the end face of the first drive disc 26. The several first helical teeth 27 are evenly distributed along the circumference of the first drive disc 26, and a first tooth groove is formed between two adjacent first helical teeth 27. A motor 28 is mounted on the left mixing plate 1, and the output shaft of the motor 28 is connected to... The second drive disk 29 has several second helical teeth 30 fixed on its end face near the first drive disk 26. These second helical teeth 30 are evenly distributed along the circumference of the second drive disk 29, forming a second tooth groove between adjacent second helical teeth 30. First helical teeth 27 fit into the second tooth groove, and second helical teeth 30 fit into the first tooth groove. A mounting ring 31 is fixedly sleeved on the main shaft 23, and a retaining spring 32 is sleeved on the main shaft 23. The two ends of the retaining spring 32 are respectively connected to the mounting ring 31 and the first drive disk 26. When the first drive disk 26 meshes with the second drive disk 29, the retaining spring 32 is compressed, and the motor 28 drives the second drive disk 29 to rotate. The second drive disk 29 rotates through the meshing of the first helical teeth 27 and the second helical teeth 30. The first drive disc 26 rotates, which in turn drives the main shaft 23 to rotate. The main shaft 23, through the meshing of the small gear 24 and the large gear 25, drives the hollow shaft 22 to rotate. The hollow shaft drives the turntable 9 to rotate, thereby driving the mixing cylinder 2 to rotate. By controlling the rotation angle of the motor 28, the rotation angle of the mixing cylinder 2 is adjusted so that different positions of the mixing cylinder 2 avoid interference from the spiral mixing blades 5. After cleaning, the turntable 9 needs to be relocked. To ensure that the limit block 15 can be smoothly fitted into the limit groove 16 to lock the turntable 9, a first drive disc 26 and a second drive disc 29 are set. Specifically, the electromagnet 18 is de-energized first, and the limit block 15 is ejected from the drive groove 17 under the reaction force of the spring 19. When the limit block 15... When the limiting groove 16 is not in contact with the turntable 9, the limiting block 15 rests on the outer wall of the turntable 9. At this time, the turntable 9 will continue to rotate. When the limiting groove 16 is located on the moving path of the limiting block 15, the limiting block 15 springs into the limiting groove 16 to complete the limiting of the turntable 9. At this time, since the motor 28 still drives the main shaft 23 to rotate, but the main shaft 23 cannot continue to rotate, the output torque of the motor 28 gradually increases. Due to the action of the first helical tooth 27 and the second helical tooth 30 (the slope of the first helical tooth 27 is different from that of the second helical tooth 30), the output torque will act on the first helical tooth 27 and the second helical tooth 30. Under the guidance of the inclined plane, the force is decomposed, forming a force that drives the first drive disk 26 to move axially, thereby causing the first drive disk 26 to compress and move the abutment spring 32.This causes the first drive disc 26 to separate from the second drive disc 29, allowing the motor 28 to idle. Once the motor 28 idles, it indicates that the turntable 9 has completed its limiting action. At this point, the motor 28 stops, thus accurately determining whether the rotational freedom of the turntable 9 is restricted, while preventing interference between the motor 28 and the main shaft 23.

[0029] In some embodiments, such as Figures 1 to 6 As shown, one end of the mixing shaft 21 is connected to the output shaft of the mixing motor 33. The outer cylinder 4 is connected to the feed pipe 34 and the discharge pipe 35. Both the feed pipe 34 and the discharge pipe 35 are equipped with electromagnetic valves. The mixing cylinder 2 has a feed hole 36 corresponding to the position of the feed pipe 34 and a discharge hole 37 corresponding to the position of the discharge pipe 35. When restricting the rotational freedom of the turntable 9, it is necessary to ensure that the feed hole 36 corresponds to the feed pipe 34 and the discharge hole 37 corresponds to the discharge pipe 35. The mixing raw materials are added into the mixing cylinder 2 through the feed pipe 34. The mixed raw materials are discharged through the discharge pipe 35. Then, the feeding and mixing continue. After all the raw materials of the sticky explosive have been mixed, the cleaning operation is performed.

[0030] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention. Furthermore, those skilled in the art will understand that the beneficial effects to be achieved by this invention are merely to achieve better beneficial effects compared with the current embodiments in the prior art under specific conditions, rather than to directly achieve the best use effect in the industry.

[0031] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A viscous prilled explosive mixing apparatus, characterised in that, The utility model provides a left mixing plate (1), mixing cylinder (2), right mixing plate (3) and outer tube (4) are included, two ends of mixing cylinder (2) are rotatably connected on left mixing plate (1) and right mixing plate (3) respectively, spiral mixing blade (5) is rotatably arranged in mixing cylinder (2), two feed windows (6) are set up on mixing cylinder (2), two feed windows (6) are about the axis symmetry of mixing cylinder (2) setting, outer tube (4) is sleeved on mixing cylinder (2), outer tube (4) is detachably connected on mixing cylinder (2), the inner wall of outer tube (4) is fixed with arc convex block (7) in the position corresponding feed window (6), arc convex block (7) is adapted in feed window (6), the inner wall of arc convex block (7) is flush with the inner wall of mixing cylinder (2), The circular groove (8) is set up on the left mixing plate (1) and the right mixing plate (3) and is rotatably provided with a rotating disc (9), and the two ends of the mixing cylinder (2) are detachably connected to the two rotating discs (9).

2. A viscous prilled explosive mixing apparatus according to claim 1, wherein The mixing cylinder (2) includes two cylindrical half cylinders, the cylindrical half cylinders are provided with through holes (10) on the inner walls of the feed windows (6), the through holes (10) are provided through along the axial direction of the mixing cylinder (2), the rotating disc (9) is provided with a threaded hole (11), and the cylindrical half cylinders are connected to the rotating disc (9) through long bolts (12) which are screwed into the threaded hole (11) through the through holes (10).

3. A viscous prilled explosive mixing apparatus as claimed in claim 2, wherein, The outer tube (4) includes two half cylinders, the half cylinders are provided with short bolts (13), the outer wall of the mixing cylinder (2) is provided with an internal threaded hole (14), and the short bolts (13) are screwed into the internal threaded hole (14).

4. The viscous prilled explosive mixing device of claim 1, wherein, The inner wall of the circular groove (8) is slidably provided with four limiting blocks (15), the four limiting blocks (15) are evenly distributed along the circumferential direction of the circular groove (8), the limiting blocks (15) move along the radial direction of the rotating disc (9), the outer wall of the rotating disc (9) is provided with four limiting grooves (16), and the four limiting grooves (16) are evenly distributed along the circumferential direction of the rotating disc (9). The limiting blocks (15) are adapted in the limiting grooves (16).

5. A viscous prilled explosive mixing apparatus as claimed in claim 4, wherein, The inner wall of the circular groove (8) is provided with a driving groove (17) corresponding to the position of the limiting block (15), the driving groove (17) is provided with an electromagnet (18), the limiting block (15) is slidably adapted in the driving groove (17), one end of the limiting block (15) close to the electromagnet (18) is provided with a permanent magnet (20), the driving groove (17) is provided with a spring (19), the spring (19) is located between the electromagnet (18) and the permanent magnet (20), the spring (19) is connected to the limiting block (15), the electromagnet (18) generates a magnetic field opposite to the magnetic pole of the permanent magnet (20) when electrified, and the limiting block (15) is adapted in the limiting groove (16) when the spring (19) is in a normal state.

6. A viscous prilled explosive mixing apparatus as claimed in claim 5, wherein, The rotating disc (9) is provided with a mixing shaft (21), the helical mixing blade (5) is fixed on the mixing shaft (21), the hollow shaft (22) is coaxially fixed on the end of the rotating disc (9) away from the mixing cylinder (2), the mixing shaft (21) passes through the hollow shaft (22), the main shaft (23) is rotatably arranged on the left mixing plate (1), the pinion (24) is sleeved on the main shaft (23), the gear wheel (25) is sleeved on the hollow shaft (22) of the left mixing plate (1), and the gear wheel (25) is engaged with the pinion (24).

7. A viscous prilled explosive mixing apparatus as claimed in claim 6, wherein, The main shaft (23) is slidably sleeved with the first driving disc (26), the end surface of the first driving disc (26) is fixed with a plurality of first bevel gears (27), a plurality of first bevel gears (27) are uniformly distributed along the circumferential direction of the first driving disc (26), and a first tooth groove is formed between adjacent two first bevel gears (27). The motor (28) is installed on the left mixing plate (1), the output shaft of the motor (28) is connected with the second driving disc (29), a plurality of second bevel gears (30) are fixed on the end surface of the second driving disc (29) close to the first driving disc (26), a plurality of second bevel gears (30) are uniformly distributed along the circumferential direction of the second driving disc (39), a second tooth groove is formed between adjacent two second bevel gears (30), the first bevel gear (27) is adapted in the second tooth groove, and the second bevel gear (30) is adapted in the first tooth groove, the main shaft (23) is fixedly sleeved with the mounting ring (31), the main shaft (23) is sleeved with the abutting spring (32), and the two ends of the abutting spring (32) are connected with the mounting ring (31) and the first driving disc (26) respectively. When the first driving disc (26) is engaged with the second driving disc (29), the abutting spring (32) is in a compressed state.

8. A viscous prilled explosive mixing apparatus as claimed in claim 7, wherein, The mixing shaft (21) is drivingly connected with the output shaft of the mixing motor (33), the outer cylinder (4) is connected with the feeding pipe (34) and the discharging pipe (35), the feeding pipe (34) and the discharging pipe (35) are provided with electromagnetic valves, the mixing cylinder (2) is provided with a feeding hole (36) corresponding to the position of the feeding pipe (34), and the mixing cylinder (2) is provided with a discharging hole (37) corresponding to the position of the discharging pipe (35).

Images