A propellant breaking device for integrated nail production

Abstract

This invention discloses a propellant crushing device for integrated nail production, comprising a feeding unit, a crushing box, a crushing unit, a screening box, a screening unit, a discharge unit, and a safety protection unit. The feeding unit is located on one side of the crushing box, and its output end is connected to the top of the crushing box. The crushing unit is located inside the crushing box, and includes a jaw crusher and a roller crusher. A guide frame is located below the jaw crusher, and the roller crusher is located below the guide frame. A screening box is connected to the lower end of the crushing box, and a screening unit is located inside the screening box. The lower end of the screening box is connected to the discharge unit. The safety protection unit is integrated into both the crushing box and the screening box. The purpose of this invention is to provide a propellant crushing device with good crushing effect, high safety, and no need for excessive human intervention.

Description

Technical Field

[0001] This invention relates to the field of integrated nail production technology, specifically to a propellant crushing device for integrated nail production. Background Technology

[0002] As a new type of fastening device, the core power source of the integrated fastener is propellant (such as single-base propellant). In the automated propellant loading production of integrated fasteners, the particle size uniformity of the propellant is a key factor in ensuring loading accuracy, equipment operational stability, and final product performance. However, during storage and transportation, propellant is prone to clumping due to moisture, compression, or temperature fluctuations. This clumping leads to the following problems: first, it blocks the feeding channel or metering device of the automated loading equipment, causing production interruptions; second, clumped propellant cannot be evenly filled during loading, resulting in deviations in the propellant loading amount per fastener and affecting the consistency of firing energy; third, insufficiently broken clumps may produce additional smoke or noise during firing due to incomplete combustion, reducing the user experience.

[0003] To address the propellant agglomeration problem, traditional processes typically employ simple grinding or hammer crushing. However, these methods have significant drawbacks: First, grinding can result in excessively fine propellant particles, increasing dust pollution and static electricity risks during subsequent loading. Second, the impact force of hammer crushing is difficult to control, easily leading to over-crushing (generating a large amount of fine powder) or incomplete crushing (leaving large agglomerates), failing to meet the stringent particle size requirements of automated loading. Third, traditional crushing equipment lacks grading and screening functions, making it impossible to promptly return substandard large propellant pieces for further crushing, requiring manual reprocessing and increasing labor costs. Fourth, as propellant is a flammable and explosive material, traditional crushing processes lack effective safety protection (such as inert gas protection and anti-static design), posing a risk of ignition or explosion. Summary of the Invention

[0004] In view of the above-mentioned shortcomings in the existing technology, the purpose of this invention is to provide a propellant fragmentation device with good fragmentation effect, high safety and no need for excessive human intervention.

[0005] The technical solution adopted by the present invention to achieve the above objectives is: a propellant crushing device for integrated nail production, comprising a feeding unit, a crushing box, a crushing unit, a screening box, a screening unit, a discharge unit, and a safety protection unit. A feeding unit is provided on one side of the crushing box, and the output end of the feeding unit is connected to the top of the crushing box for introducing propellant into the crushing device. A crushing unit is provided inside the crushing box, and the crushing unit includes a jaw crushing mechanism and a roller crushing mechanism. The jaw crushing mechanism is used to crush larger agglomerates in the propellant through the mutual compression between the moving jaw tooth plate and the fixed jaw tooth plate. A guide frame is provided below the jaw crushing mechanism, and a guide port is provided in the middle of the guide frame for initially... The crushed propellant is guided by a roller cutter crushing mechanism. The roller cutter crushing mechanism is located below the guide frame and is used to further crush the initially crushed propellant, ensuring that the particle size meets the requirements of subsequent automatic filling equipment. A screening box is connected to the lower end of the crushing box, and a screening unit is installed inside the screening box to perform propellant screening operations. Large, uncrushed pieces of propellant are simultaneously recycled for further crushing. The lower end of the screening box is connected to a discharge unit, through which the propellant screened out enters the discharge unit and is transported to the assembly workshop. A safety protection unit is integrated into both the crushing box and the screening box to reduce the risk of the crushing device and prevent the propellant from being ignited.

[0006] In the above technical solution, the specific structure of the feeding unit is as follows: The feeding unit includes a support platform, a feeding bin, a feeding pipe, a feeding tube, a feeding shaft, a first spiral blade, and a discharge pipe. The feeding pipe is fixedly connected to the upper end of the support platform. The feeding shaft is rotatably connected inside the feeding pipe. The first spiral blade is fixedly connected to the feeding shaft. The discharge pipe is fixedly connected to one side of the upper end of the feeding pipe. The other end of the discharge pipe is connected through the crushing chamber. The feeding pipe is fixedly connected to one side of the lower end of the feeding pipe. The other end of the feeding pipe is connected to the bottom of the feeding bin. The feeding bin is fixedly connected to the support platform via a support frame.

[0007] In the above technical solution, the specific structure of the jaw crusher is as follows: The jaw crusher mechanism includes a bearing assembly, an eccentric shaft, a movable jaw frame, a movable jaw tooth plate, a rear frame, an adjusting rod, an adjusting block, an elbow plate seat, an elbow plate, a tie rod seat, a spring tie rod, a helical spring, a fixed jaw frame, and a fixed jaw tooth plate. An eccentric shaft is rotatably connected inside the crushing chamber. Bearing assemblies are embedded in the side walls of the crushing chamber at both ends of the eccentric shaft. Both ends of the eccentric shaft are rotatably connected to the bearing assemblies. One end of the eccentric shaft passes through the bearing assembly and is fixedly connected to a first pulley. The first pulley is connected to the roller crusher mechanism via a belt. One end of the movable jaw frame is rotatably connected to the eccentric shaft. The other end of the movable jaw frame is rotatably connected to a spring tie rod. The other end of the spring tie rod passes through a through hole in the tie rod seat and is threadedly connected to a limit nut. A helical spring is sleeved on the spring tie rod between the limit nut and the tie rod seat. Furthermore, the two ends of the helical spring abut against the limiting nut and the pull rod seat respectively. A diaphragm belt is fixedly connected to the lower end of the pull rod seat, and the other end of the diaphragm belt is fixedly connected to the bottom of the moving jaw frame. A rear frame is fixedly connected to the upper end of the pull rod seat. An adjusting block is slidably connected inside the rear frame. An adjusting rod is fixedly connected to one end of the adjusting block. The adjusting rod passes through the rear frame and is connected to a locking component. The locking component is embedded and fixedly connected to one end of the rear frame. The other end of the adjusting block is connected to one end of an elbow plate through an elbow plate seat. The other end of the elbow plate is connected to the moving jaw frame through an elbow plate seat. A moving jaw tooth plate is fixedly connected to one side of the moving jaw frame. A fixed jaw frame is fixedly connected to the inner wall of the crushing chamber on the opposite side of the moving jaw tooth plate. A fixed jaw tooth plate is fixedly connected to the opposite side of the fixed jaw frame. The surfaces of both the fixed jaw tooth plate and the moving jaw tooth plate are provided with triangular convex teeth.

[0008] In the above technical solution, the specific structure of the roller crushing mechanism is as follows: The roller crushing mechanism includes crushing rollers, arc-shaped blades, linkage gears, and synchronous gears. Two sets of symmetrical crushing rollers are rotatably connected inside the crushing box below the guide frame. Several arc-shaped blades are fixedly connected to the crushing rollers, and the arc-shaped blades on the two sets of crushing rollers rotate alternately. The same end shaft of the two sets of crushing rollers passes through the crushing box and is fixedly connected to the synchronous gear. Two sets of meshing linkage gears are rotatably connected to the outer wall of the crushing box between the synchronous gears, and the synchronous gear and linkage gear on the adjacent side mesh with each other. The other end shaft of one set of crushing rollers passes through the crushing box and is fixedly connected to the transmission sprocket. The transmission sprocket is connected to the drive sprocket via a chain belt. The drive sprocket is fixedly connected to the shaft of the drive motor. The drive motor is fixedly connected to the motor mounting bracket on one side of the crushing box. The other end of the other set of crushing rollers passes through the crushing box and is fixedly connected to the second pulley. The second pulley is connected to the first pulley via a belt.

[0009] In the above technical solution, the screening box is further optimized as follows: the upper end of the screening box is sleeved and connected to the lower end of the crushing box, the lower end of the screening box has a funnel-shaped structure, and several support components are fixedly connected to the outer wall of the crushing box above the screening box, and the outer wall of the screening box is connected to the support components.

[0010] In the aforementioned technical approach, the specific structure of the supporting component is as follows: The support assembly includes a fixed block, a support leg, a sliding guide column, a support spring, a sliding guide rod, and a damping slider. Several fixed blocks are fixedly connected to the outer wall of the crushing box. A support leg is fixedly connected to one side of each fixed block. A sliding cavity is formed inside each support leg. A sliding guide column is slidably connected inside the sliding cavity. A sliding groove block is fixedly connected to one side of each sliding guide column. A sliding groove hole is formed on the outer wall of the support leg on one side of the sliding groove block. The sliding groove block is slidably connected inside the sliding groove hole and is fixedly connected to the outer wall of the screening box after passing through the sliding groove hole. A guide groove hole is formed at the lower end of the sliding guide column. A damping slider is slidably connected inside the guide groove hole. A sliding guide rod is fixedly connected to the lower end of the damping slider. The sliding guide rod is fixedly connected to the bottom of the sliding cavity after passing through the guide groove hole. A support spring is sleeved around the outer periphery of the sliding guide rod. The upper end of the support spring abuts against the bottom of the sliding guide column.

[0011] In the above technical solution, the specific structure of the screening unit is as follows: The screening unit includes a screening plate, a guide plate, a discharge head, a flexible connecting pipe, a vibrating frame, a rotating shaft, a first gear, a second gear, an eccentric wheel, ball bearings, and a vibrating rod. A guide plate is fixedly connected to the crushing chamber on one side of the screening box. The screening plate is fixedly connected to the screening box itself, and the screening plate is inclined to one side. A discharge head is fixedly connected to the outer wall of the screening box at the bottom of the inclined section. A flexible connecting pipe is fixedly connected to the other end of the discharge head, and the other end of the flexible connecting pipe is connected to the outer wall of the feed pipe. Symmetrical vibrating rods are respectively installed on both sides of the screening box. The vibrating frame is rotatably connected to a rotating shaft. One end of the rotating shaft is connected to the rotating shaft of a drive motor. A first gear is fixedly connected to the rotating shaft on the opposite side of the vibrating frame. The first gear meshes with a second gear. The second gear is rotatably connected to one side of the vibrating frame. The rotating shaft of the second gear passes through the vibrating frame and is fixedly connected to an eccentric wheel. The eccentric wheel is fixedly connected to the middle of a ball bearing. A vibrating rod is fixedly connected to the outer wall of the ball bearing. The other end of the vibrating rod is rotatably connected to both sides of the screening box.

[0012] In the above technical solution, the specific technical solution of the discharge unit is as follows: The discharge unit includes a conveying pipe, a conveying shaft, a second spiral blade, an elastic tube, a first bevel gear, a second bevel gear, and a conveying motor. The conveying pipe is located below the screening box, and the lower middle part of the screening box is connected to the conveying pipe through the elastic tube. The conveying shaft is rotatably connected inside the conveying pipe, and the second spiral blade is fixedly connected to the conveying shaft. One end of the conveying shaft passes through the conveying pipe and is rotatably connected to a support platform. A conveying motor is fixedly connected to a fixed rod inside the support platform, and the rotating shaft of the conveying motor is fixedly connected to one end of the conveying shaft. The first bevel gear is fixedly connected to the conveying shaft inside the support platform. One end of the feeding shaft passes through the feeding pipe and is rotatably connected to the support platform. The second bevel gear is fixedly connected to the feeding shaft inside the support platform, and the second bevel gear meshes with the first bevel gear.

[0013] In the above technical solution, the specific technical structure of the security protection unit is as follows: The safety protection unit includes a nitrogen storage tank, a gas supply pipeline, an oxygen concentration sensor, and a nitrogen replenishment valve. A first gas inlet pipe is fixedly connected to the outer wall of the crushing box located above the screening box, and a second gas inlet pipe is fixedly connected to the upper end of the feeding hopper. Both the first and second gas inlet pipes are connected to the nitrogen storage tank through the gas supply pipeline, and a nitrogen replenishment valve is fixedly installed on both the first and second gas inlet pipes. An oxygen concentration sensor is fixedly installed on the outer walls of both the crushing box and the feeding hopper. In addition, the surfaces of the structures that directly contact the propellant, such as the feeding pipe, the first spiral blade, the moving jaw tooth plate, the fixed jaw tooth plate, the inner wall of the crushing box, the inner wall of the screening box, the feeding pipe, and the second spiral blade, are all provided with an antistatic coating.

[0014] The beneficial effects of this invention are: 1. This invention replaces manual feeding with a feeding unit, ensuring stable delivery of propellants, preventing impurities from entering, adapting to subsequent continuous crushing processes, improving production efficiency, and ensuring personnel safety during operation without the need for personnel to operate nearby.

[0015] 2. A two-stage crushing mode is adopted, which uses a jaw crusher to pre-crush large lumps and a roller crusher to finely crush them, ensuring that the lumps can be completely crushed and meet the accuracy requirements of automatic loading.

[0016] 3. The screening unit is equipped with an inclined screening plate and a vibration mechanism. Particles that meet the particle size requirements are discharged, while large pieces of propellant are returned to the feed pipe through a soft pipe for further crushing, realizing online grading and recycling, and ensuring that the propellant can be fully crushed.

[0017] 4. The safety protection unit integrates nitrogen gas replenishment, anti-static coating and oxygen monitoring to dynamically maintain a low-oxygen environment, suppress the risk of static electricity and oxidation ignition, and ensure the inherent safety of the crushing process.

[0018] 5. The support assembly buffers screening vibrations through springs and damping sliders, ensuring smooth operation of the crushing box and screening box, reducing component wear, and extending equipment service life. Attached Figure Description

[0019] Figure 1 This is a front-view three-dimensional structural diagram of the crushing device of the present invention; Figure 2 This is a rear-view three-dimensional structural diagram of the crushing device of the present invention; Figure 3 This is a schematic cross-sectional view of the crushing device of the present invention; Figure 4 for Figure 3 Schematic diagram of the connection structure of the jaw crusher mechanism; Figure 5 for Figure 3 Schematic diagram of the connection structure between the crushing roller and the screening plate; Figure 6 This is a schematic cross-sectional view of the feeding unit of the present invention; Figure 7 for Figure 6 Detailed structural diagram of part A1 in the middle; Figure 8 This is a schematic diagram of the crushing roller connection structure of the present invention; Figure 9 This is a schematic cross-sectional view of the support component of the present invention; Figure 10 This is a schematic diagram of the vibration frame installation and connection structure of the present invention; Figure 11 This is a schematic diagram of the cross-sectional connection structure of the ball bearing of the present invention; Figure 12 This is a schematic diagram of the connection structure of the nitrogen storage tank of the present invention.

[0020] In the diagram: 1. Feeding unit, 101. Support platform, 102. Feed bin, 103. Feed pipe, 104. Feeding pipe, 105. Feeding shaft, 106. First spiral blade, 107. Discharge pipe, 2. Crushing box, 3. Crushing unit, 31. Jaw crushing mechanism, 3101. Bearing assembly, 3102. Eccentric shaft, 3103. Moving jaw frame, 3104. Moving jaw tooth plate, 3105. Rear frame, 3106. Adjusting rod, 3107. Adjusting block, 3108. Toggle plate seat, 31. 09 Elbow plate, 3110 Tie rod seat, 3111 Spring tie rod, 3112 Helical spring, 3113 Fixed jaw frame, 3114 Fixed jaw tooth plate, 3115 First pulley, 3116 Diaphragm belt, 32 Roller crushing mechanism, 3201 Crushing roller, 3202 Arc blade, 3203 Linkage gear, 3204 Synchronous gear, 3205 Drive motor, 3206 Transmission sprocket, 3207 Drive sprocket, 3208 Motor mounting bracket, 320 9 Second pulley, 33 Guide frame, 4 Screening box, 5 Screening unit, 501 Screening plate, 502 Guide plate, 503 Discharge head, 504 Flexible connecting pipe, 505 Vibrating frame, 506 Rotating shaft, 507 First gear, 508 Second gear, 509 Eccentric wheel, 510 Ball bearing, 511 Vibrating rod, 6 Discharge unit, 601 Conveying pipe, 602 Conveying shaft, 603 Second spiral blade, 604 Elastic tube, 605 First bevel gear, 6 06 Second bevel gear, 607 Material transfer motor, 201 Support assembly, 202 Fixing block, 203 Support leg, 204 Sliding guide column, 205 Support spring, 206 Sliding guide rod, 207 Damping slider, 208 Sliding cavity, 209 Sliding block, 210 Sliding hole, 211 Guide hole, 301 Nitrogen storage tank, 302 Gas supply pipeline, 303 Oxygen concentration sensor, 304 Nitrogen replenishment valve, 305 First gas inlet pipe, 306 Second gas inlet pipe. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-12A propellant crushing device for integrated nail production includes a feeding unit 1, a crushing box 2, a crushing unit 3, a screening box 4, a screening unit 5, a discharge unit 6, and a safety protection unit. The feeding unit 1 is located on one side of the crushing box 2. The feeding unit 1 includes a support platform 101, a feeding bin 102, a feeding pipe 103, a feeding pipe 104, a feeding shaft 105, a first spiral blade 106, and a discharge pipe 107. The feeding pipe 104 is fixedly connected to the upper end of the support platform 101. The feeding shaft 105 is rotatably connected inside the feeding pipe 104. The first spiral blade 106 is fixedly connected to the feeding shaft 105. The upper end of the feeding pipe 104 is fixedly connected to... There is a discharge pipe 107, the other end of which is connected to the crushing box 2. The lower end of the feeding pipe 104 is fixedly connected to the feed pipe 103, and the other end of the feed pipe 103 is connected to the bottom of the feed bin 102. The feed bin 102 is fixedly connected to the support platform 101 by the support frame. When in use, the inlet at the upper end of the feed bin 102 is opened, and the propellant to be processed is loaded into the feed bin 102. Then, the feeding shaft 105 drives the first spiral blade 106 to rotate, and the first spiral blade 106 lifts and conveys the propellant in the feed bin 102 upward until it is introduced into the crushing box 2 through the discharge pipe 107.

[0023] Please see Figure 3 The crushing box 2 is equipped with a crushing unit 3, which includes a jaw crusher 31 and a roller crusher 32. The jaw crusher 31 is used to crush larger agglomerates in the propellant by mutual compression between the moving jaw tooth plate 3104 and the fixed jaw tooth plate 3114. A guide frame 33 is provided below the jaw crusher 31, and a guide port is provided in the middle of the guide frame 33 to guide the initially crushed propellant to the roller crusher 32. The roller crusher 32 is provided below the guide frame 33 to further crush the initially crushed propellant to ensure that the particle size of the propellant meets the requirements of subsequent automatic filling equipment. The technical solutions of the jaw crusher 31 and the roller crusher 32 are as follows: Please see Figure 2 , Figure 3 and Figure 4The jaw crusher mechanism 31 includes a bearing assembly 3101, an eccentric shaft 3102, a movable jaw frame 3103, a movable jaw tooth plate 3104, a rear frame 3105, an adjusting rod 3106, an adjusting block 3107, an elbow plate seat 3109, an elbow plate 3109, a rod seat 3110, a spring rod 3111, a helical spring 3112, a fixed jaw frame 3113, and a fixed jaw tooth plate 3114. An eccentric shaft 3102 is rotatably connected inside the crushing chamber 2. Bearing assemblies 3101 are respectively embedded in the side walls of the crushing chamber 2 at both ends of the eccentric shaft 3102. Both ends of the eccentric shaft 3102 are rotatably connected inside the bearing assembly 3101. One end of the eccentric shaft 3102 passes through the bearing assembly 3101 and then... The first pulley 3115 is fixedly connected and is driven by the roller crushing mechanism 32 via a belt. One end of the movable jaw frame 3103 is rotatably connected to the eccentric shaft 3102, and the other end of the movable jaw frame 3103 is rotatably connected to a spring rod 3111. The other end of the spring rod 3111 passes through the through hole of the rod seat 3110 and is threadedly connected to the limit nut. A helical spring 3112 is sleeved on the spring rod 3111 between the limit nut and the rod seat 3110, and the two ends of the helical spring 3112 abut against the limit nut and the rod seat 3110 respectively. A diaphragm belt 3116 is fixedly connected to the lower end of the rod seat 3110, and the other end of the diaphragm belt 3116 is connected to the movable jaw. The bottom of frame 3103 is fixedly connected, and the upper end of the tie rod seat 3110 is fixedly connected to the rear frame 3105. An adjusting block 3107 is slidably connected inside the rear frame 3105. One end of the adjusting block 3107 is fixedly connected to an adjusting rod 3106. The adjusting rod 3106 passes through the rear frame 3105 and is connected to a locking component. The locking component is embedded and fixedly connected to one end of the rear frame 3105. The other end of the adjusting block 3107 is connected to one end of the elbow plate 3109 through the elbow plate seat 3109. The other end of the elbow plate 3109 is connected to the moving jaw frame 3103 through the elbow plate seat 3109. A moving jaw tooth plate 3104 is fixedly connected to one side of the moving jaw frame 3103. The crushing box 2 on the opposite side of the moving jaw tooth plate 3104 is... A fixed jaw frame 3113 is fixedly connected to the wall, and a fixed jaw tooth plate 3114 is fixedly connected to the opposite side of the fixed jaw frame 3113. Both the fixed jaw tooth plate 3114 and the movable jaw tooth plate 3104 are provided with triangular protruding teeth to improve the agglomeration and break-up effect and avoid material blockage. In specific operation, the first pulley 3115 drives the eccentric shaft 3102 to rotate, and the eccentric shaft 3102 drives one end of the movable jaw frame 3103 to perform a circular motion. The other end of the movable jaw frame 3103 is restricted to slight vibration by the spring rod 3111 and the elbow plate 3109, so that the movable jaw tooth plate 3104 repeatedly squeezes the fixed jaw tooth plate 3114, thereby achieving continuous break-up of the propellant between the two. Please see Figure 3 , Figure 5 and Figure 8The roller crushing mechanism 32 includes crushing rollers 3201, arc-shaped blades 3202, linkage gears 3203, and synchronous gears 3204. Two sets of symmetrical crushing rollers 3201 are rotatably connected inside the crushing box 2 below the guide frame 33. Several staggered arc-shaped blades 3202 are fixedly connected to the crushing rollers 3201, and the arc-shaped blades 3202 on the two sets of crushing rollers 3201 rotate alternately. The shafts at the same end of the two sets of crushing rollers 3201 pass through the crushing box 2 and are fixedly connected to the synchronous gears 3204. Two sets of meshing linkage gears 3203 are rotatably connected to the outer wall of the crushing box 2 between the synchronous gears 3204, and the synchronous gears 3204 on the adjacent side mesh with the linkage gears 3203. The shaft at the other end of one set of crushing rollers 3201 passes through the crushing box 2 and is fixedly connected to the transmission sprocket 3206. The transmission sprocket 3206 is connected to the drive sprocket 3207 via a chain belt. The drive sprocket 3207 is fixedly connected to the shaft of the drive motor 3205. The drive motor 3205 is fixedly connected to the motor mounting bracket 3208 on one side of the crushing box 2. The other end of the other set of crushing rollers 3201 passes through the crushing box 2 and is fixedly connected to the second pulley 3209. The second pulley 3209 is connected to the first pulley 3115 via a belt. In specific operation, the drive motor 3205 drives the crushing roller 3201 on the opposite side to rotate. The other end of the crushing roller 3201 drives the other set of crushing rollers 3201 to rotate through the coordinated action of the linkage gear 3203 and the synchronous gear 3204. The two sets of crushing rollers 3201 simultaneously drive the arc blades 3202 to rotate relative to each other, thereby shearing and crushing the propellant falling from the guide frame 33. In addition, one end of the crushing roller 3201 drives the second pulley 3209 to rotate, and the second pulley 3209 drives the first pulley 3115 to rotate via a belt.

[0024] The lower end of the crushing box 2 is connected to the screening box 4. Specifically, the upper end of the screening box 4 is sleeved and connected to the lower end of the crushing box 2, and an annular rubber belt is fixedly connected to the lower edge of the crushing box 2. The other side of the annular rubber belt is fixedly connected to the inner wall of the screening box 4. This ensures both slight sliding movement between the crushing box 2 and the screening box 4 and a sealed connection between the crushing box 2 and the screening box 4, preventing the escape of fine dust from the propellant and internal inert gas. The lower end of the screening box 4 has a funnel-shaped structure for better discharge of the propellant. Several support components 201 are fixedly connected to the outer wall of the crushing box 2 above the screening box 4, and the outer wall of the screening box 4 is connected to the support components 201. Please see Figure 9The support assembly 201 includes a fixed block 202, a support leg 203, a sliding guide post 204, a support spring 205, a sliding guide rod 206, and a damping slider 207. Several fixed blocks 202 are fixedly connected to the outer wall of the crushing box 2. Support legs 203 are fixedly connected to one side of each fixed block 202. A sliding cavity 208 is formed inside each support leg 203. A sliding guide post 204 is slidably connected within the sliding cavity 208. A sliding groove block 209 is fixedly connected to one side of the sliding guide post 204. A sliding groove hole 210 is formed on the outer wall of the support leg 203 on one side of the sliding groove block 209. The sliding groove block 209 is slidably connected within the sliding groove hole 210, and after passing through the sliding groove hole 210, it is fixedly connected to the outer wall of the screening box 4. A guide groove hole 211 is formed at the lower end of the sliding guide post 204. A damping slider 207 is slidably connected within the guide groove hole 211. A sliding guide rod 206 is fixedly connected to the lower end of the slider 207. The sliding guide rod 206 passes through the guide slot hole 211 and is fixedly connected to the bottom of the sliding cavity 208. A support spring 205 is sleeved around the outer periphery of the sliding guide rod 206. The upper end of the support spring 205 is in contact with the bottom of the sliding guide column 204. First, the crushing box 2 is supported and fixed by the fixing block 202 and the support leg 203. Second, the chute block 209 and the sliding guide column 204 are fixedly connected to the screening box 4 and can move up and down. The support spring 205 is set below the sliding guide column 204. The reaction force after the spring is compressed realizes the relative support of the screening box 4. In specific operation, the screening unit 5 will drive the screening box 4 to vibrate up and down, thereby driving the chute block 209 and the sliding guide column 204 to move up and down slightly, and causing the support spring 205 to reciprocate and contract.

[0025] Please see Figure 3 , Figure 5 , Figure 10 as well as Figure 11The screening box 4 is equipped with a screening unit 5 for screening the propellant and simultaneously recirculating large, uncrushed pieces of propellant for further crushing. The screening unit 5 includes a screening plate 501, a guide plate 502, a discharge head 503, a flexible connecting pipe 504, a vibrating frame 505, a rotating shaft 506, a first gear 507, a second gear 508, an eccentric wheel 509, a ball bearing 510, and a vibrating rod 511. A guide plate 502 is fixedly connected to the crushing box 2 on one side of the screening box 4. A screening plate 501 is fixedly connected to the screening box 4, and the screening plate 501 is tilted to one side. A discharge head 503 is fixedly connected to the outer wall of the screening box 4 at the bottom of the tilted section. The other end of the discharge head 503 is fixedly connected to... A flexible connecting pipe 504 is provided, with its other end connected to the outer wall of the feeding pipe 104. Symmetrical vibrating frames 505 are respectively installed on both sides of the screening box 4. A rotating shaft 506 is rotatably connected between the vibrating frames 505. One end of the rotating shaft 506 is connected to the shaft of the drive motor 3205. A first gear 507 is fixedly connected to the rotating shaft 506 on the opposite side of the vibrating frame 505. The first gear 507 meshes with a second gear 508. The second gear 508 is rotatably connected to one side of the vibrating frame 505. The shaft of the second gear 508 passes through the vibrating frame 505 and is fixedly connected to an eccentric wheel 509. The eccentric wheel 509 is fixedly connected to the middle of the ball bearing 510. A vibrating rod 511 is fixedly connected to the outer wall of the 10. The other end of the vibrating rod 511 is rotatably connected to both sides of the screening box 4. In specific operation, after the crushing roller 3201 completely crushes the propellant, the propellant is first guided to the inclined area above the screening plate 501 by the guide plate 502. The horizontal inclination angle of the screening plate 501 is 5-15°. At the same time, the drive motor 3205 drives the rotating shaft 506 to rotate. The rotating shaft 506 synchronously drives the two sets of first gears 507 to rotate. The first gears 507 drive the meshing second gears 508 to rotate. The second gears 508 drive the coaxially connected eccentric wheel 509 to rotate. The central axis of the eccentric wheel 509 is connected to the second gear 508. The central axes are arranged slightly staggered, so that the ball bearing 510 (other types of bearings can also be used here) drives the vibrating rod 511 to vibrate slightly up and down. The other end of the vibrating rod 511 drives the screening box 4 to vibrate slightly up and down, so that the propellant inside the screening box 4 slides down the inclined surface of the screening plate 501. During this process, the screening plate 501 screens out the propellant that meets the particle size through the screen holes, while larger pieces of material are intercepted and slide down the screening plate 501 to the discharge head 503. Then, the soft pipe 504 reintroduces it into the feed pipe 104, so that it is put back into the crushing box 2 for crushing. The screened propellant is collected at the bottom of the funnel and introduced into the discharge unit 6.

[0026] Please see Figure 3 and Figure 6The lower end of the screening box 4 is connected to the discharge unit 6. The propellant screened out by the screening unit 5 enters the discharge unit 6, which transports the propellant to the assembly workshop. The discharge unit 6 includes a conveying pipe 601, a conveying shaft 602, a second spiral blade 603, an elastic tube 604, a first bevel gear 605, a second bevel gear 606, and a conveying motor 607. The conveying pipe 601 is located below the screening box 4, and the lower middle part of the screening box 4 is connected to the conveying pipe 601 through the elastic tube 604. The conveying shaft 602 is rotatably connected inside the conveying pipe 601. The second spiral blade 603 is fixedly connected to the conveying shaft 602. One end of the conveying shaft 602 passes through the conveying pipe 601 and is rotatably connected inside the support platform 101. The conveying motor 607 is connected to a fixed rod inside the support platform 101. The rotating shaft of the conveying motor 607 is fixedly connected to one end of the conveying shaft 602. A first bevel gear 605 is fixedly connected to the conveying shaft 602 inside 01. One end of the feeding shaft 105 passes through the feed pipe 103 and is rotatably connected to the support platform 101. A second bevel gear 606 is fixedly connected to the feeding shaft 105 inside the support platform 101. The second bevel gear 606 and the first bevel gear 605 are meshed with each other. In specific operation, the conveying motor 607 drives the conveying shaft 602 to rotate, and the conveying shaft 602 drives the second spiral blade 603 to rotate. The second spiral blade 603 realizes the pushing and transmission of the propellant, thereby transporting the screened propellant to the conversion workshop to complete the production of the integrated nail. In addition, the conveying shaft 602 simultaneously drives the first bevel gear 605 to rotate, and the first bevel gear 605 drives the second bevel gear 606 to rotate, thereby driving the feeding shaft 105 to rotate through the second bevel gear 606, thus realizing the driving and feeding of the feeding unit.

[0027] The safety protection unit is integrated into the crushing box 2 and the screening box 4 to reduce the risk of the crushing device and prevent the propellant from being ignited. Please refer to [link / reference]. Figure 3 and Figure 12The safety protection unit includes a nitrogen storage tank 301, a gas supply pipeline 302, an oxygen concentration sensor 303, and a nitrogen replenishment valve 304. A first gas inlet pipe 305 is fixedly connected to the outer wall of the crushing box 2 located above the screening box 4. A second gas inlet pipe 306 is fixedly connected to the upper end of the feed hopper 102. Both the first and second gas inlet pipes 305 and 306 are connected to the nitrogen storage tank 301 via the gas supply pipeline 302, and a nitrogen replenishment valve 304 is fixedly installed on both the first and second gas inlet pipes 305 and 306. An oxygen concentration sensor 303 is fixedly installed on the outer walls of both the crushing box 2 and the feed hopper 102. In addition, the feeding pipe 104, the first spiral blade 106, the moving jaw tooth plate 3104, the fixed jaw tooth plate 3114, the inner wall of the crushing box 2, the inner wall of the screening box 4, the feeding pipe 601, and the second spiral blade 604 are also included. All structural surfaces that directly contact the propellant, such as 03, are coated with an antistatic coating to prevent static electricity from igniting the propellant. In specific operation, after the propellant to be processed is loaded into the feeding hopper, the hopper cover is closed, and the valve of the nitrogen storage tank 301 is opened, allowing low-temperature nitrogen to reach the first gas inlet pipe 305 and the second gas inlet pipe 306 through the gas delivery pipe 302. At this time, the oxygen concentration sensor 303 detects the oxygen concentration in the crushing chamber 2 and the feeding hopper respectively. When the detected oxygen percentage is high, the nitrogen replenishment valve 304 is automatically opened, thereby delivering low-temperature nitrogen to the feeding hopper and the crushing chamber 2 respectively. When the oxygen percentage drops to the preset value, the crushing program is started. During the crushing process, when the oxygen concentration rises to the threshold, the nitrogen replenishment valve 304 is automatically opened to replenish nitrogen, thereby ensuring the safety of the crushing process.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A propellant crushing device for integrated nail production, comprising a feeding unit (1), a crushing box (2), a crushing unit (3), a screening box (4), a screening unit (5), a discharge unit (6), and a safety protection unit, characterized in that: A feeding unit (1) is provided on one side of the crushing box (2). The output end of the feeding unit (1) is connected to the top of the crushing box (2). A crushing unit (3) is provided inside the crushing box (2). The crushing unit (3) includes a jaw crushing mechanism (31) and a roller crushing mechanism (32). A guide frame (33) is provided below the jaw crushing mechanism (31). A roller crushing mechanism (32) is provided below the guide frame (33). A screening box (4) is connected to the lower end of the crushing box (2). A screening unit (5) is provided inside the screening box (4). The lower end of the screening box (4) is connected to the discharge unit (6). The safety protection unit is integrated on the crushing box (2) and the screening box (4).

2. The propellant crushing device for integrated nail production according to claim 1, characterized in that: The feeding unit (1) includes a support platform (101), a feeding bin (102), a feeding pipe (103), a feeding pipe (104), a feeding shaft (105), a first spiral blade (106), and a discharge pipe (107). The upper end of the support platform (101) is fixedly connected to the feeding pipe (104). The feeding shaft (105) is rotatably connected inside the feeding pipe (104). The first spiral blade (106) is fixedly connected to the feeding shaft (105). The upper end of the feeding pipe (104) is fixedly connected to the discharge pipe (107). The other end of the discharge pipe (107) is connected through the crushing box (2). The lower end of the feeding pipe (104) is fixedly connected to the feeding pipe (103). The other end of the feeding pipe (103) is connected to the bottom of the feeding bin (102). The feeding bin (102) is fixedly connected to the support platform (101) by a support frame.

3. The propellant crushing device for integrated nail production according to claim 1, characterized in that: The jaw crusher (31) includes a bearing assembly (3101), an eccentric shaft (3102), a movable jaw frame (3103), a movable jaw tooth plate (3104), a rear frame (3105), an adjusting rod (3106), an adjusting block (3107), an elbow plate seat (3108), an elbow plate (3109), a tie rod seat (3110), a spring tie rod (3111), a helical spring (3112), a fixed jaw frame (3113), and a fixed jaw tooth plate (3114). The eccentric shaft (3102) is rotatably connected inside the crushing box (2). The bearing assembly (3101) is embedded in the side wall of the crushing box (2) at both ends of the eccentric shaft (3102). The two ends of the eccentric shaft (3102) are rotatably connected to the bearing assembly (3101). One end of the eccentric shaft (3102) passes through the bearing assembly (3101) and is fixedly connected to the first pulley (3115). The first pulley (3115) is connected to the roller crushing mechanism (32) via a belt. One end of the movable jaw frame (3103) is rotatably connected to the eccentric shaft (3102). The other end of the movable jaw frame (3103) is rotatably connected to a spring rod (3111). The other end of the spring rod (3111) passes through the through hole of the rod seat (3110) and is threadedly connected to the limiting nut. The limiting nut and the rod seat (311) are connected to each other. A helical spring (3112) is sleeved on the spring rod (3111) between 0), and the two ends of the helical spring (3112) abut against the limit nut and the rod seat (3110) respectively. A diaphragm belt (3116) is fixedly connected to the lower end of the rod seat (3110), and the other end of the diaphragm belt (3116) is fixedly connected to the bottom of the moving jaw frame (3103). A rear frame (3105) is fixedly connected to the upper end of the rod seat (3110), and an adjusting block (3107) is slidably connected inside the rear frame (3105). An adjusting rod (3106) is fixedly connected to one end of the adjusting block (3107). After passing through the rear frame (3105), it is connected to the locking member. The locking member is embedded and fixedly connected to one end of the rear frame (3105). The other end of the adjusting block (3107) is connected to one end of the elbow plate (3109) through the elbow plate seat (3108). The other end of the elbow plate (3109) is connected to the moving jaw frame (3103) through the elbow plate seat (3108). A moving jaw tooth plate (3104) is fixedly connected to one side of the moving jaw frame (3103). A fixed jaw frame (3113) is fixedly connected to the inner wall of the crushing box (2) on the opposite side of the moving jaw tooth plate (3104). A fixed jaw tooth plate (3114) is fixedly connected to the opposite side of the fixed jaw frame (3113).

4. The propellant crushing device for integrated nail production according to claim 1, characterized in that: The roller crushing mechanism (32) includes a crushing roller (3201), an arc-shaped blade (3202), a linkage gear (3203), and a synchronization gear (3204). Two sets of symmetrical crushing rollers (3201) are rotatably connected in the crushing box (2) below the guide frame (33). Several arc-shaped blades (3202) are fixedly connected on the crushing rollers (3201), and the arc-shaped blades (3202) on the two sets of crushing rollers (3201) rotate alternately. The shafts at the same end of the two sets of crushing rollers (3201) pass through the crushing box (2) and are fixedly connected to the synchronization gear (3204). Two sets of meshing linkage gears (3203) are rotatably connected to the outer wall of the crushing box (2) between the synchronization gears (3204). Furthermore, the synchronous gear (3204) and the linkage gear (3203) on the adjacent side are meshed and connected to each other. The shaft of the other end of one set of crushing rollers (3201) passes through the crushing box (2) and is fixedly connected to the transmission sprocket (3206). The transmission sprocket (3206) is connected to the drive sprocket (3207) through the chain belt. The drive sprocket (3207) is fixedly connected to the shaft of the drive motor (3205). The drive motor (3205) is fixedly connected to the motor mounting bracket (3208) on one side of the crushing box (2). The other end of the other set of crushing rollers (3201) passes through the crushing box (2) and is fixedly connected to the second pulley (3209). The second pulley (3209) is connected to the first pulley (3115) through the belt.

5. The propellant crushing device for integrated nail production according to claim 1, characterized in that: The upper end of the screening box (4) is sleeved and connected to the lower end of the crushing box (2). The lower end of the screening box (4) has a funnel-shaped structure. Several support components (201) are fixedly connected to the outer wall of the crushing box (2) above the screening box (4). The outer wall of the screening box (4) is connected to the support components (201).

6. The propellant crushing device for integrated nail production according to claim 5, characterized in that: The support assembly (201) includes a fixed block (202), a support leg (203), a sliding guide post (204), a support spring (205), a sliding guide rod (206), and a damping slider (207). Several fixed blocks (202) are fixedly connected to the outer wall of the crushing box (2). Each fixed block (202) is fixedly connected to one side of a support leg (203). A sliding cavity (208) is opened in the support leg (203). A sliding guide post (204) is slidably connected in the sliding cavity (208). A sliding groove block (209) is fixedly connected to one side of the sliding guide post (204). A sliding groove hole (210) is opened on the outer wall of the support leg (203) on one side of the sliding groove block (209). The chute block (209) is slidably connected in the chute hole (210), and the chute block (209) is fixedly connected to the outer wall of the screening box (4) after passing through the chute hole (210). The lower end of the sliding guide column (204) is provided with a guide hole (211). A damping slider (207) is slidably connected in the guide hole (211). The lower end of the damping slider (207) is fixedly connected with a sliding guide rod (206). The sliding guide rod (206) is fixedly connected to the bottom of the sliding cavity (208) after passing through the guide hole (211). A support spring (205) is sleeved on the outer periphery of the sliding guide rod (206). The upper end of the support spring (205) is in contact with the bottom of the sliding guide column (204).

7. The propellant crushing device for integrated nail production according to claim 2, characterized in that: The screening unit (5) includes a screening plate (501), a guide plate (502), a discharge head (503), a flexible connecting pipe (504), a vibrating frame (505), a rotating shaft (506), a first gear (507), a second gear (508), an eccentric wheel (509), a ball bearing (510), and a vibrating rod (511). The guide plate (502) is fixedly connected to the crushing box (2) on one side of the screening box (4). The screening plate (501) is fixedly connected to the screening box (4). The screening plate (501) is inclined to one side. The discharge head (503) is fixedly connected to the outer wall of the screening box (4) at the bottom of the inclination. The other end of the discharge head (503) is fixedly connected to the flexible connecting pipe (504). The other end of the flexible connecting pipe (504) is connected to the outer wall of the feeding pipe (104). The two sides of the screening box (4) are respectively provided with opposite... The vibrating frame (505) is rotatably connected to the vibrating frame (505) by a rotating shaft (506). One end of the rotating shaft (506) is connected to the shaft of the drive motor (3205). A first gear (507) is fixedly connected to the rotating shaft (506) on the opposite side of the vibrating frame (505). The first gear (507) is meshed with a second gear (508). The second gear (508) is rotatably connected to one side of the vibrating frame (505). The shaft of the second gear (508) passes through the vibrating frame (505) and is fixedly connected to an eccentric wheel (509). The eccentric wheel (509) is fixedly connected to the middle of a ball bearing (510). A vibrating rod (511) is fixedly connected to the outer wall of the ball bearing (510). The other end of the vibrating rod (511) is rotatably connected to both sides of the screening box (4).

8. The propellant crushing device for integrated nail production according to claim 7, characterized in that: The discharge unit (6) includes a conveying pipe (601), a conveying shaft (602), a second spiral blade (603), an elastic tube (604), a first bevel gear (605), a second bevel gear (606), and a conveying motor (607). The conveying pipe (601) is located below the screening box (4), and the lower middle part of the screening box (4) is connected to the conveying pipe (601) through the elastic tube (604). The conveying shaft (602) is rotatably connected inside the conveying pipe (601), and the second spiral blade (603) is fixedly connected to the conveying shaft (602). One end of the conveying shaft (602) extends out of the conveying pipe (601). The feed shaft is rotatably connected to the support platform (101). A feed motor (607) is connected to the fixed rod inside the support platform (101). The rotating shaft of the feed motor (607) is fixedly connected to one end of the feed shaft (602). A first bevel gear (605) is fixedly connected to the feed shaft (602) inside the support platform (101). One end of the feed shaft (105) passes through the feed pipe (103) and is rotatably connected to the support platform (101). A second bevel gear (606) is fixedly connected to the feed shaft (105) inside the support platform (101). The second bevel gear (606) and the first bevel gear (605) mesh with each other.

9. The propellant crushing device for integrated nail production according to claim 8, characterized in that: The safety protection unit includes a nitrogen storage tank (301), a gas pipeline (302), an oxygen concentration sensor (303), and a nitrogen replenishment valve (304). A first gas inlet pipe (305) is fixedly connected to the outer wall of the crushing box (2) located above the screening box (4). A second gas inlet pipe (306) is fixedly connected to the upper end of the feeding hopper (102). Both the first gas inlet pipe (305) and the second gas inlet pipe (306) are connected to the nitrogen storage tank (301) through the gas pipeline (302). A nitrogen replenishment valve (304) is fixedly installed on both the first gas inlet pipe (305) and the second gas inlet pipe (306). An oxygen concentration sensor (303) is fixedly installed on the outer wall of both the crushing box (2) and the feeding hopper (102).

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