A material conveying device for fine processing of explosive agents

Abstract

The present invention belongs to the technical field of mechanical equipment, and specifically relates to a material conveying equipment for pyrotechnic agent refining processing; only one power source is needed to drive the conveyor belt body to rotate continuously, so as to complete the continuous, dispersed and uniform transportation of pyrotechnic agent materials to the crushing equipment, and the water sprayed by the flushing nozzle can be used to re-humidify the pyrotechnic agent materials to ensure the safety of the subsequent crushing of the materials. Through the ingenious design of the disc turner and the freely liftable connection relationship, it can realize two functions without the need for an additional power source. One is to crush the agglomerated materials, and the other is to use the scraper strips of the conveyor belt body to rotate intermittently under the drive when there is a cavity under the material storage bucket to automatically turn the materials, so that the materials collapse and fall into the cavity, thereby ensuring the continuous transportation of the materials. No close human participation is required in the whole process, and the human-machine isolation of the dangerous process is achieved to ensure the safety of production.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical equipment, and in particular relates to a material conveying device for fine processing of explosive agents. Background Art

[0002] Belt conveyors are currently widely used for conveying powdered or bulk materials. Belt conveyors are devices that continuously transport a specific material along a designed route, capable of both horizontal and inclined transport. They offer a fixed conveying path and high conveying capacity, making them widely used in the food, electronics, and coal industries, primarily for transporting dry materials with stable chemical properties.

[0003] Explosives are highly sensitive to friction and impact, and many are self-supplied with oxygen. Strong friction and impact can easily cause combustion or even explosion, making direct crushing difficult. A common method of crushing in the pyrotechnics industry is water-based crushing, using claw-type crushing equipment. During crushing, the claws and the charge column or pellets rub, collide, and shear against each other, generating significant heat. To ensure safety, the pyrotechnic agent to be refined is soaked in water, and loading requires good stability to prevent excessive material from overloading the equipment, leading to overheating and combustion and explosion.

[0004] However, materials with high water content have high viscosity and poor fluidity. When adding materials using a conventional feeding funnel, the material will cling to the inner wall of the funnel, even forming a cavity after the material at the bottom has drained away, while the material above cannot collapse under its own weight, resulting in material breakage. The current method of feeding is the original funnel feeding method, which requires the operator to constantly observe and manually turn the material. This feeding method has a significant impact on the human factor, is unstable, requires the operator to operate in close proximity, cannot achieve human-machine isolation, and cannot guarantee inherent safety during production. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to ensure the stable and uninterrupted feeding of water-containing explosive composition without the need for close operation by personnel.

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

[0007] A material conveying device for fine processing of explosive agents, comprising:

[0008] frame;

[0009] The conveyor belt body is connected to the frame and includes a lifting and conveying section and a discharge section. The surface of the conveyor belt body is provided with scraper strips arranged at equal intervals and perpendicular to the conveying direction of the conveyor belt body. The end of the discharge section is tilted downward.

[0010] A material storage hopper connected to the frame, located above the lifting and conveying section of the conveyor belt body, having a rectangular horizontal cross-section, and comprising two side plates located on both sides of the conveyor belt body, with the inner walls of the side plates being provided with limit sleeves;

[0011] Movable rods, wherein the two movable rods are respectively slidably connected to the two limiting sleeves;

[0012] A shaft rod connected between the lower ends of the two movable rods;

[0013] A disc turner is provided in the material storage hopper and is rotatably connected to the shaft. A plurality of ribs are distributed on the circumferential surface of the disc turner in a circular array, and the ribs are perpendicular to the conveying direction of the conveyor belt body.

[0014] A restraining plate, the restraining plate being connected to the frame and being located below the discharge section of the conveyor belt body;

[0015] A flushing nozzle, wherein the nozzle of the flushing nozzle is directed toward the lower part of the end of the discharge section of the conveyor belt body.

[0016] Furthermore, in the above-mentioned material conveying equipment for pyrotechnic agent refinement processing, the ratio of the distance between two adjacent convex ribs to the distance between two adjacent scraping strips is 1:3-5.

[0017] Furthermore, in the above-mentioned material conveying equipment for fine processing of explosive agents, the height of the scraping strip is 4-6 mm.

[0018] Furthermore, in the above-mentioned material conveying equipment for pyrotechnic agent refinement, the end of the restraining plate is tilted downward, and the water flow sprayed from the nozzle of the flushing nozzle is a fan-shaped water flow, and the width of the fan-shaped water flow is greater than the width of the conveyor belt body.

[0019] Furthermore, in the above-mentioned material conveying equipment for fine processing of pyrotechnic agents, the ratio of the diameter of the disc material turner to the front-to-back width of the material storage hopper is 1:1.5-2.

[0020] Furthermore, in the above-mentioned material conveying equipment for pyrotechnic agent refinement processing, the upper end of the movable rod is connected to a counterweight.

[0021] Furthermore, in the above-mentioned material conveying equipment for pyrotechnic agent refinement processing, the angle between the belt surface of the lifting section of the conveyor belt body and the horizontal plane is 40-50 degrees.

[0022] Furthermore, in the above-mentioned material conveying equipment for pyrotechnic agent refinement processing, the angle between the axial direction of the movable rod and the horizontal plane is 75-80 degrees.

[0023] The beneficial effects of the present invention are that only one power source is needed to drive the conveyor belt body to rotate continuously, so as to complete the continuous, dispersed and uniform transportation of pyrotechnic materials to the crushing equipment, facilitate and stabilize the load of the crushing equipment, maximize the crushing efficiency of the crushing equipment, improve the crushing capacity of the crushing equipment, and use the water sprayed from the flushing nozzle to re-humidify the pyrotechnic materials to ensure the safety of subsequent crushing of the materials. Through the ingenious design of the disc turner and its freely liftable connection relationship, it can realize two functions without the need for an additional power source. One is to crush the agglomerated materials, and the other is to use the scraper strip of the conveyor belt body to rotate intermittently under the transmission when there is a cavity under the material storage bucket to play an automatic turning role, so that the materials collapse and fall into the cavity, ensuring continuous material transportation. No close human participation is required throughout the process, and human-machine isolation of dangerous processes is achieved to ensure production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a material conveying device for fine processing of explosive agents according to a specific embodiment of the present invention;

[0025] Figure 2 for Figure 1 A magnified view of part A;

[0026] Figure 3 for Figure 1 A magnified view of part B;

[0027] Description of labels:

[0028] 1. Frame;

[0029] 2. Conveyor belt body; 21. Lifting and conveying section; 22. Discharge section; 23. Scraper bar; 24. Explosion-proof variable frequency motor;

[0030] 3. Material storage bucket; 31. Limit sleeve;

[0031] 4. Shaft;

[0032] 5. Disc turner; 51. Convex rib;

[0033] 6. Constraint plate;

[0034] 7. Rinse the nozzle;

[0035] 8. Counterweight. DETAILED DESCRIPTION

[0036] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0037] Please refer to Figures 1 to 3The specific embodiment of the present invention relates to a material conveying device for fine processing of explosive agents, comprising:

[0038] Rack 1;

[0039] The conveyor belt body 2 is connected to the frame 1 and includes a lifting and conveying section 21 and a discharge section 22. Scraping strips 23 are arranged at equal intervals on the belt surface of the conveyor belt body 2. The scraping strips 23 are perpendicular to the conveying direction of the conveyor belt body 2. The end of the discharge section 22 is tilted downward.

[0040] A material storage hopper 3 is connected to the frame 1 and is located above the lifting and conveying section 21 of the conveyor belt body 2. The horizontal cross-section of the material storage hopper 3 is rectangular and includes two side plates located on both sides of the conveyor belt body 2. The inner walls of the side plates are provided with limit sleeves 31.

[0041] Movable rods, the two movable rods are respectively slidably connected to the two limiting sleeves 31;

[0042] A shaft 4, the shaft 4 being connected between the lower ends of the two movable rods;

[0043] A disc turner 5 is provided in the material storage hopper 3 and is rotatably connected to the shaft 4. A plurality of ribs 51 are distributed on the circumferential surface of the disc turner 5 in a circular array. The ribs 51 are perpendicular to the conveying direction of the conveyor belt body 2.

[0044] A restraining plate 6, the restraining plate 6 being connected to the frame 1 and being located below the discharge section 22 of the conveyor belt body 2;

[0045] The flushing nozzle 7 has a nozzle facing the lower part of the end of the discharge section 22 of the conveyor belt body 2.

[0046] In the above embodiment, the conveyor belt body 2 is connected to the explosion-proof variable frequency motor 24 , and the conveyor belt body 2 is driven by the explosion-proof variable frequency motor 24 to continuously rotate.

[0047] In the above embodiment, the belt surface of the conveyor belt body 2 is a corrosion-resistant flexible belt; the width of the conveyor belt body 2 is 50 mm.

[0048] Working principle: In the initial state, the disc turner 5 is held by its gravity or external force, and its circumferential surface is against the belt surface of the conveyor belt body 2. The semi-wet pyrotechnic agent to be crushed is manually added to the material storage bucket 3 (when the volume of the material storage bucket 3 is 20 liters, 15 kg of pyrotechnic agent with water can be stored in the material storage bucket 3). The explosion-proof frequency conversion motor 24 is turned on to drive the conveyor belt body 2 to rotate continuously. The pyrotechnic agent in the material storage bucket 3 is continuously scraped and sent through the scraping strips 23 on the surface of the conveyor belt body 2. At this time, the disc turner 5 is lifted up by the pushed material, which plays a certain role in auxiliary feeding. That is, when the scraping strips 23 drive the material to pass under the disc turner 5, the disc turner 5 is used to scrape the material. The circumferential surface of the disc turner 5 squeezes the scraping strip 23 to push the material, and uses the convex ribs 51 on its surface to crush the agglomerated pyrotechnic agent, so that it can be smoothly sent out of the material storage bucket 3; when the material at the bottom of the material storage bucket 3 is scraped off, a cavity is formed due to the extremely high viscosity of the material itself, and the disc turner 5 sinks under the action of gravity and contacts the surface of the conveyor belt again. The extended convex ribs 51 and the scraping material cause the disc turner 5 to rotate intermittently under the push of the scraping strip 23, so that the other convex ribs 51 of the disc turner 5 play the role of turning over the pyrotechnic agent in the material storage bucket 3, so that the pyrotechnic agent collapses under the action of gravity after being turned over to contact with the conveyor belt body 2, so that the pyrotechnic agent can be continuously scraped out.

[0049] When the pyrotechnic material is sent to the discharge section 22 by the scraper bar 23, it falls through the end to the constraint plate 6 below, and is guided by the constraint plate 6 to fall into the crushing equipment below (the end of the constraint plate 6 points to the feed port of the crushing equipment, and the material is flushed into the constraint plate 6 by the water flow in the constraint plate 6). Since the pyrotechnic material has viscosity, when the belt surface rotates to the bottom of the discharge section 22, part of the pyrotechnic material will adhere to the belt surface. At this time, the belt surface is flushed by the flushing nozzle 7, so that the pyrotechnic material adhering to the belt surface is fully flushed into the constraint plate 6. Because the water flow has a certain pressure and flushes from bottom to top, the water flow will not flow along the belt surface but will be completely flushed into the constraint plate 6.

[0050] In the above embodiment, only one explosion-proof variable frequency motor 24 is needed as a power source to complete the continuous, dispersed and uniform transportation of pyrotechnic materials to the crushing equipment, which is convenient for stabilizing the load of the crushing equipment, can maximize the crushing efficiency of the crushing equipment, improve the crushing capacity of the crushing equipment, and can use the water sprayed from the flushing nozzle 7 to re-humidify the pyrotechnic materials to ensure the safety of subsequent crushing of the materials. Through the clever design of the disc turner 5 and its freely liftable connection relationship, it can achieve two functions without the need for an additional power source. One is to crush the agglomerated materials, and the other is to use the scraper strip 23 of the conveyor belt body 2 to rotate intermittently under the transmission when there is a cavity under the material storage bucket 3, to play an automatic turning role, so that the material collapses and falls into the cavity, ensuring continuous material transportation. No close human participation is required throughout the process, and human-machine isolation of dangerous processes is achieved to ensure production safety.

[0051] As a preferred embodiment, the ratio of the distance between two adjacent ribs 51 to the distance between two adjacent scraping strips 23 is 1:3-5.

[0052] Preferably, the distance between two adjacent scraper strips 23 is 50 mm, and the distance between two adjacent ribs 51 is 15 mm.

[0053] As a preferred embodiment, the scraper strip 23 has a height of 4-6 mm. Preferably, the scraper strip 23 has a width of 50 mm and a height of 5 mm.

[0054] As a preferred embodiment, the end of the restraining plate 6 is tilted downward, and the water flow sprayed from the nozzle of the flushing nozzle 7 is a fan-shaped water flow, and the width of the fan-shaped water flow is greater than the width of the conveyor belt body 2.

[0055] Preferably, the width of the fan-shaped water flow contacting the conveyor belt body 2 is 60 mm, and the belt surface below the conveyor belt body 2 of the discharge section 22 is tilted downward to ensure that the fan-shaped water flow can completely fall to the restraining plate 6 below, avoiding the water flow from flowing along the belt surface below the conveyor belt body 2.

[0056] As a preferred embodiment, the ratio of the diameter of the disc turner 5 to the front-to-back width of the material storage hopper 3 is 1:1.5-2.

[0057] The above width ratio can further ensure the continuous feeding of the pyrotechnic agent material. If the front-to-back width of the material storage bucket 3 is too large, the material turning effect will be affected. If the width is too small, the volume of the material storage bucket 3 will be affected.

[0058] As a preferred embodiment, the upper end of the movable rod is connected to a counterweight 8.

[0059] In the above embodiment, the counterweight 8 is preferably a counterweight ball, which serves to increase the weight of the disc turner 5 .

[0060] As a preferred embodiment, the angle between the belt surface of the lifting section of the conveyor belt body 2 and the horizontal plane is 40-50 degrees.

[0061] As a preferred embodiment, the angle between the axis of the movable rod and the horizontal plane is 75-80 degrees.

[0062] In the above embodiment, the axial direction of the movable rod is the direction in which the disc turner 5 moves up and down. This angle is very critical. If the angle is completely vertical, the material will have too much resistance during the pushing process, making it difficult to lift the disc turner 5, so that the material pushed by the scraper bar 23 is easily squeezed out by the disc turner 5, affecting the feeding efficiency. If the angle between the axial direction of the movable rod and the horizontal plane is too small, the component force of the disc turner 5 pressing against the belt surface of the conveyor belt body 2 will be too small, resulting in the rib 51 of the disc turner 5 not being able to fully contact the scraper bar 23 when the material adheres and cannot fall, resulting in unstable transmission, thereby affecting the turning efficiency.

[0063] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A material conveying device for pyrotechnic agent refinement processing, characterized in that: include: frame; The conveyor belt body is connected to the frame and includes a lifting and conveying section and a discharge section. The surface of the conveyor belt body is provided with scraper strips arranged at equal intervals and perpendicular to the conveying direction of the conveyor belt body. The end of the discharge section is tilted downward. A material storage hopper connected to the frame, located above the lifting and conveying section of the conveyor belt body, having a rectangular horizontal cross-section, and comprising two side plates located on both sides of the conveyor belt body, with the inner walls of the side plates being provided with limit sleeves; Movable rods, wherein the two movable rods are respectively slidably connected to the two limiting sleeves; A shaft rod connected between the lower ends of the two movable rods; A disc turner is provided in the material storage hopper and is rotatably connected to the shaft. A plurality of ribs are distributed on the circumferential surface of the disc turner in a circular array, and the ribs are perpendicular to the conveying direction of the conveyor belt body. A restraining plate, the restraining plate being connected to the frame and being located below the discharge section of the conveyor belt body; A flushing nozzle, wherein the nozzle of the flushing nozzle is directed toward the lower end of the discharge section of the conveyor belt body; The angle between the belt surface of the lifting section of the conveyor belt body and the horizontal plane is 40-50 degrees; The angle between the axis of the movable rod and the horizontal plane is 75-80 degrees.

2. The material conveying equipment for pyrotechnic agent refinement processing according to claim 1, characterized in that: The ratio of the distance between two adjacent convex ribs to the distance between two adjacent scraping strips is 1:3-5.

3. The material conveying equipment for pyrotechnic agent refinement processing according to claim 1, characterized in that: The height of the scraping strip is 4-6 mm.

4. The material conveying equipment for pyrotechnic agent refinement processing according to claim 1, characterized in that: The end of the restraining plate is tilted downward, and the water flow sprayed from the nozzle of the flushing nozzle is a fan-shaped water flow, and the width of the fan-shaped water flow is greater than the width of the conveyor belt body.

5. The material conveying equipment for pyrotechnic agent refinement processing according to claim 1, characterized in that: The ratio of the diameter of the disc material turner to the front-to-back width of the material storage bucket is 1:1.5-2.

6. The material conveying equipment for pyrotechnic agent refinement processing according to claim 1, characterized in that: The upper end of the movable rod is connected with a counterweight.

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