Pyrotechnic composition particle processing aid adding device

Abstract

The invention discloses a pyrotechnic composition particle processing aid adding device, and relates to the technical field of pyrotechnic composition particle processing. The feeding mechanism comprises a vertical cylinder fixedly connected to the upper end of the base, a sliding plug is slidably connected to the inner wall of the vertical cylinder in a sealed mode, a mounting rod is fixedly connected to the upper end of the sliding plug, the upper end of the mounting rod penetrates through the vertical cylinder and is fixedly connected with a weight platform, and the mixing cylinder is fixedly connected to the upper end of the weight platform; a first spring is fixedly connected between the inner bottom of the vertical cylinder and the sliding plug, a feeding box is fixedly connected to the upper end of the base through a support, a pressure plate is slidably connected to the inner wall of the feeding box in a sealed mode, and a sealing plate is fixedly connected to the inner wall of the feeding box in a sealed mode. The amount of the processing aid can be automatically matched according to the amount of pyrotechnic composition particles to be processed, manual weighing and adding are not needed, more time and labor are saved, and efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pyrotechnic powder particle processing, and in particular to a pyrotechnic powder particle processing auxiliary agent adding device. Background Art

[0002] Pyrotechnics are composed of oxidants, combustibles and adhesives. They are weak explosive substances that use their combustion reactions to produce visible light, infrared radiation, high heat, high-pressure gas, aerosol smoke and sound effects. They are low-speed explosives. Pyrotechnics are widely used in military and industry, agriculture, transportation, shipping and film making.

[0003] When processing the existing pyrotechnic powder particles, processing aids are added to the prepared particles in proportion and then mixed evenly to increase the fluidity of the particles and facilitate the subsequent tableting operation. However, when adding the processing aids, the processing aids are manually weighed in proportion and then added to the pyrotechnic powder particles for mixing. This operation method is relatively inefficient, thereby delaying the processing speed. In addition, when adding the processing aids, fixed-point delivery is usually adopted, and the added processing aids will accumulate at a fixed point, making it difficult to mix evenly with the pyrotechnic powder particles.

[0004] Based on this, we propose a device for adding pyrotechnic powder particle processing additives. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a device for adding a pyrotechnic powder particle processing aid.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A device for adding a pyrotechnic powder particle processing aid, comprising a base and a mixing cylinder; The top end of the mixing cylinder is provided with a feeding port, and the top end of the mixing cylinder is connected with the pressure relief valve, and the top end of the mixing cylinder is connected with the pressure relief valve, and the top end of the mixing cylinder is connected with the pressure relief valve. The flow regulating mechanism comprises a sealing ball which is rotatably connected to the inner wall of the feeding pipe in a sealing manner, and a flow opening is provided on the side wall of the sealing ball.

[0007] Preferably, the flow regulating mechanism also includes a rotating shaft rotatably connected to the side wall of the sealing sphere, one end of the rotating shaft passes through the side wall of the feeding tube and is fixedly connected to a first gear, the upper end of the weight platform is fixedly connected to a rack, and the first gear is meshingly connected to the rack.

[0008] Preferably, a mixing mechanism is installed on the mixing barrel, and the mixing mechanism includes a motor fixedly connected to the side wall of the mixing barrel, the output end of the motor passes through the inner wall of the mixing barrel and is fixedly connected to a one-way bearing, the inner ring of the one-way bearing is fixedly connected to a spline shaft, the sliding sleeve of the side wall of the spline shaft is provided with a spline sleeve, and the side wall of the spline sleeve is fixedly connected to a plurality of stirring rods.

[0009] Preferably, the mixing mechanism also includes a sliding rod fixedly connected to the inner wall of the mixing barrel, the side wall of the sliding rod is slidably connected to a sliding block, the side wall of the sliding block is fixedly connected to a connecting rod, the side wall of the spline sleeve is provided with an annular T-slot, the inner wall of the annular T-slot is slidably connected to a T-block, the other end of the connecting rod is fixedly connected to the T-block, the inner wall of the mixing barrel is rotatably connected to a reciprocating screw, the side wall of the reciprocating screw is threadedly connected to the sliding block, the side wall of the outer ring of the one-way bearing is fixedly connected to a second gear, the side wall of the reciprocating screw is fixedly connected to a third gear, and the second gear is meshingly connected to the third gear.

[0010] Preferably, solenoid valves are installed on the inner walls of the feeding pipe and the first connecting pipe, the motor, the solenoid valve and the external power supply are electrically connected through wires, and a diode is provided in the circuit composed of the motor, the solenoid valve and the external power supply.

[0011] Preferably, a knocking mechanism is installed on the mixing cylinder, and the knocking mechanism includes a sliding cylinder fixedly connected to the upper end of the mixing cylinder through a fixed shaft, the inner wall of the sliding cylinder is sealingly and slidingly connected to a slide plate, the side wall of the slide plate is fixedly connected to a cross bar, one end of the cross bar passes through the side wall of the sliding cylinder and is fixedly connected to a knocking head, and a second spring is fixedly connected between the inner wall of the sliding cylinder and the slide plate.

[0012] Preferably, the knocking mechanism also includes an airbag rotatably connected to the inner wall of the mixing cylinder, the other end of the airbag is fixedly connected to the side wall of the spline sleeve, the inner wall of the airbag is fixedly connected with a one-way air inlet pipe, and the airbag is connected to the slide cylinder through a second connecting pipe.

[0013] Preferably, a cleaning mechanism is installed on the mixing barrel, and the cleaning mechanism comprises an annular cavity opened in the side wall of the mixing barrel, a plurality of air injection holes are opened on the inner wall of the annular cavity, and the airbag is connected with the annular cavity through a one-way air supply pipe.

[0014] Preferably, an upper hopper is fixedly connected to the upper end of the mixing cylinder, a discharge pipe is fixedly connected to the side wall of the mixing cylinder, and a valve is installed on the side wall of the discharge pipe.

[0015] The present invention has the following beneficial effects: 1. By setting up a feeding mechanism, the amount of processing aids can be automatically proportioned according to the amount of processed pyrotechnic powder particles, without the need for manual weighing and adding, which saves time and effort and improves efficiency; 2. By setting a flow regulating mechanism, when adding pyrotechnic powder particles and the weight platform drops, the rack will be driven to move downward synchronously, and then the first gear will be driven to rotate, so that the sealing ball will rotate, and then the flow port will rotate, so that the flow port will open, and the downward movement distance of the rack is determined by the amount of pyrotechnic powder particles. The more pyrotechnic powder particles are added to the mixing barrel, the greater the downward movement distance of the rack, and the greater the angle of rotation of the sealing ball, the larger the flow port is opened, so that when the amount of processing aids to be added is more, the flow port is larger, and the speed of adding the processing aids can be accelerated, and when the amount of processing aids added is less, the flow port is smaller, and the speed of adding the processing aids can be slowed down. Since the amount of processing aids is small, if they are added quickly at one time, they will all enter the mixing barrel in a very short time, and the reciprocating movement of pyrotechnic powder particles takes time, which will make it impossible for the processing aids to be evenly sprinkled on all the pyrotechnic powder particles. Therefore, by adjusting the addition speed of the processing aids by the amount of the processing aids, the processing aids can be better mixed evenly on the pyrotechnic powder particles; 3. By setting a mixing mechanism, after the pyrotechnic powder particles are added into the mixing barrel, the pyrotechnic powder particles need to be preliminarily mixed first. At this time, a reverse current is passed through the motor to drive the motor to rotate in the reverse direction. At this time, the motor will drive the spline shaft to rotate, and then drive the spline sleeve to rotate, drive multiple stirring rods to rotate, stir the pyrotechnic powder particles, and play a mixing role; 4. After the initial mixing is completed, it is necessary to add the processing aid and mix again. At this time, the stirring rod will reciprocate while rotating, so that while stirring the pyrotechnic powder particles, the stirring rod can also make the pyrotechnic powder particles reciprocate in the mixing barrel. Since the pyrotechnic powder particles reciprocate in the mixing barrel, the processing aid flowing into the mixing barrel can be evenly sprinkled on all the pyrotechnic powder particles. Compared with adding the processing aid at a fixed point, it can avoid the processing aid being too concentrated, and thus unable to be quickly mixed with all the pyrotechnic powder particles; 5. By setting a knocking mechanism, in the process of mixing the pyrotechnic powder particles and the processing aid, the reciprocating movement of the spline sleeve will repeatedly squeeze and stretch the airbag, and then the air in the airbag will repeatedly enter and exit the slide tube through the second connecting pipe, thereby driving the slide plate to slide back and forth, driving the cross bar to move back and forth, and then driving the knocking head to move back and forth, constantly knocking the side wall of the feeding tube, causing the feeding tube to vibrate, thereby preventing part of the processing aid from adhering to the tube wall of the feeding tube when the processing aid flows in the feeding tube, thereby reducing the loss of the processing aid during the addition process, and ensuring the accuracy of the amount of processing aid added to the maximum extent; 6. By setting up a cleaning mechanism, part of the air in the airbag will enter the annular cavity through the one-way air supply pipe, and then the air will be ejected through multiple jet holes. The ejected air jet can blow off the pyrotechnic powder particles adhering to the inner wall of the mixing barrel, thereby preventing the pyrotechnic powder particles from adhering to the inner wall of the mixing barrel and causing the loss of pyrotechnic powder particles. At the same time, it can also reduce the number of subsequent manual cleaning of the mixing barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a device for adding a pyrotechnic powder particle processing aid proposed by the present invention; Figure 2 for Figure 1 A rear view schematic diagram of the structure in the middle; Figure 3 for Figure 1 A schematic cross-sectional view of the structure; Figure 4 for Figure 3 A schematic diagram of the structure enlargement at point A; Figure 5 for Figure 3 A schematic diagram of the structure at B in FIG. Figure 6 for Figure 3 A schematic diagram of the structure at position C in FIG. Figure 7 for Figure 3 Schematic diagram of the enlarged structure at D in the figure.

[0017] In the figure: 1, base; 2, mixing cylinder; 3, vertical cylinder; 4, sliding plug; 5, mounting rod; 6, weight platform; 7, first spring; 8, feeding box; 9, pressure plate; 901, pressure chamber; 902, storage chamber; 903, feeding chamber; 11, feeding pipe; 12, first connecting pipe; 13, sealing ball; 14, flow port; 15, rotating shaft; 16, first gear; 17, rack; 18, spline shaft; 19, spline sleeve; 20, stirring rod; 21, feeding port; 22, sliding rod; 23, slider; 24, connecting rod Connecting rod; 25, annular T-slot; 26, T-block; 27, motor; 28, one-way bearing; 29, reciprocating screw; 30, second gear; 31, third gear; 32, one-way feed pipe; 33, slide cylinder; 34, slide plate; 35, cross bar; 36, knocking head; 37, second spring; 38, air bag; 39, one-way air inlet pipe; 40, second connecting pipe; 41, annular cavity; 42, jet hole; 43, one-way air supply pipe; 44, upper hopper; 45, discharge pipe; 46, sealing plate; 47, one-way feed hole. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0019] Reference Figure 1 - Figure 7 , a device for adding a pyrotechnic powder particle processing aid, comprising a base 1 and a mixing cylinder 2; The feeding mechanism includes a vertical cylinder 3 fixedly connected to the upper end of the base 1, such as Figure 3As shown, the inner wall of the vertical cylinder 3 is sealed and slidably connected with a sliding plug 4, the upper end of the sliding plug 4 is fixedly connected with a mounting rod 5, the upper end of the mounting rod 5 passes through the vertical cylinder 3 and is fixedly connected with a weight platform 6, the mixing cylinder 2 is fixedly connected to the upper end of the weight platform 6, the bottom of the vertical cylinder 3 and the sliding plug 4 are jointly and fixedly connected with a first spring 7, the upper end of the base 1 is fixedly connected with a feeding box 8 through a bracket, the inner wall of the feeding box 8 is sealed and slidably connected with a pressure plate 9, the inner wall of the feeding box 8 is sealed and fixedly connected with a sealing plate 46, the pressure plate 9 and the sealing plate 46 divide the interior of the feeding box 8 into a pressure chamber 901, a storage chamber 902 and The feeding chamber 903 has three parts. The lower end of the feeding box 8 is fixedly connected with a feeding pipe 11. The inner wall of the storage chamber 902 is fixedly connected with a one-way feeding pipe 32. The one-way feeding pipe 32 only allows external processing aids to enter the storage chamber 902. The upper end of the sealing plate 46 is provided with a one-way feeding hole 47. The storage chamber 902 is connected with the feeding chamber 903 through the one-way feeding hole 47. The one-way feeding hole 47 only allows the processing aids in the storage chamber 902 to enter the feeding chamber 903. The upper end of the mixing cylinder 2 is provided with a feeding port 21. The vertical cylinder 3 is connected with the pressure chamber 901 through the first connecting pipe 12. Furthermore, pyrotechnic powder particles are added into the mixing barrel 2. At this time, the overall weight of the mixing barrel 2 will increase, thereby exerting downward pressure on the weight platform 6, driving the mounting rod 5 to move downward, pushing the sliding plug 4 to move downward, and converting the overall gravitational potential energy of the mixing barrel 2 into kinetic energy. At this time, part of the air in the vertical barrel 3 will enter the pressure chamber 901 through the first connecting pipe 12, thereby increasing the pressure in the pressure chamber 901. At this time, the pressure in the pressure chamber 901 will be greater than that in the storage chamber 902, and then the pressure plate 9 will slide downward, thereby increasing the pressure in the storage chamber 902, thereby maintaining pressure balance. When the pressure plate 9 slides downward, the processing aid in the storage chamber 902 will pass through the first connecting pipe 12. The powder enters the loading chamber 903 through the one-way feeding hole 47 for storage, and the moving distance of the pressure plate 9 determines the amount of the processing aid entering the loading chamber 903, and the moving distance of the pressure plate 9 depends on the moving distance of the slide plug 4, and the moving distance of the slide plug 4 depends on the pressure applied by the weight platform 6, and the pressure applied by the weight platform 6 depends on the weight of the pyrotechnic powder particles inside the mixing barrel 2. Therefore, the amount of pyrotechnic powder particles added to the mixing barrel 2 can determine the amount of the processing aid entering the loading chamber 903. Therefore, the amount of the processing aid can be automatically proportioned according to the amount of the processed pyrotechnic powder particles, without the need for manual weighing and adding, which saves time and effort and improves efficiency.

[0020] The flow regulating mechanism comprises a sealing ball 13 which is sealingly rotatably connected to the inner wall of the feeding pipe 11 , and a flow opening 14 is formed on the side wall of the sealing ball 13 .

[0021] The flow regulating mechanism also includes a rotating shaft 15 rotatably connected to the side wall of the sealing sphere 13. One end of the rotating shaft 15 passes through the side wall of the feeding tube 11 and is fixedly connected to a first gear 16. A rack 17 is fixedly connected to the upper end of the weight platform 6. The first gear 16 is meshed with the rack 17.

[0022] It should be noted that when the rack 17 moves downward to be out of mesh with the first gear 16 , the sealing ball 13 just rotates 90 degrees, so that the flow port 14 is completely in an open state.

[0023] Furthermore, when the pyrotechnic powder particles are added and the weight platform 6 descends, the rack 17 is synchronously driven to move downward, thereby driving the first gear 16 to rotate, causing the sealing ball 13 to rotate, thereby causing the flow port 14 to rotate, so that the flow port 14 is opened, and the downward movement distance of the rack 17 is determined by the amount of pyrotechnic powder particles. The more pyrotechnic powder particles are added to the mixing barrel 2, the greater the downward movement distance of the rack 17, and the greater the angle of rotation of the sealing ball 13, so that the flow port 14 is opened more, so that when the amount of processing aids to be added is more, the flow port 14 is opened. The larger the opening 14 is, the faster the speed of adding the processing aid can be. When the amount of processing aid added is less, the smaller the flow opening 14 is, the slower the speed of adding the processing aid can be. Since the amount of processing aid is small, if it is added quickly at one time, it will all enter the mixing barrel 2 in a very short time, and the reciprocating movement of the pyrotechnic powder particles takes time, which will make it impossible for the processing aid to be evenly sprinkled on all the pyrotechnic powder particles. Therefore, by adjusting the speed of adding the processing aid by the amount of the processing aid, the processing aid can be better mixed evenly with the pyrotechnic powder particles.

[0024] A mixing mechanism is installed on the mixing barrel 2, and the mixing mechanism includes a motor 27 fixedly connected to the side wall of the mixing barrel 2. The output end of the motor 27 passes through the inner wall of the mixing barrel 2 and is fixedly connected to a one-way bearing 28. The inner ring of the one-way bearing 28 is fixedly connected to a spline shaft 18. The sliding sleeve of the side wall of the spline shaft 18 is provided with a spline sleeve 19, and the side wall of the spline sleeve 19 is fixedly connected to a plurality of stirring rods 20.

[0025] The mixing mechanism also includes a slide rod 22 fixedly connected to the inner wall of the mixing barrel 2, a slide block 23 is slidably connected to the side wall of the slide rod 22, a connecting rod 24 is fixedly connected to the side wall of the slide block 23, an annular T-slot 25 is provided on the side wall of the spline sleeve 19, a T-block 26 is slidably connected to the inner wall of the annular T-slot 25, the other end of the connecting rod 24 is fixedly connected to the T-block 26, a reciprocating screw 29 is rotatably connected to the inner wall of the mixing barrel 2, the side wall of the reciprocating screw 29 is threadedly connected to the slide block 23, a second gear 30 is fixedly connected to the outer ring side wall of the one-way bearing 28, a third gear 31 is fixedly connected to the side wall of the reciprocating screw 29, and the second gear 30 is meshingly connected to the third gear 31.

[0026] It should be noted that the output end of the motor 27 is fixedly connected to the inner ring of the one-way bearing 28. When the motor 27 rotates in the forward direction, the inner and outer rings of the one-way bearing 28 engage with each other, so that the inner and outer rings of the one-way bearing 28 rotate together, and then the spline shaft 18 and the second gear 30 rotate synchronously. When the motor 27 rotates in the reverse direction, the inner and outer rings of the one-way bearing 28 are not engaged, so the inner ring of the one-way bearing 28 rotates, and the outer ring does not rotate, and then the spline shaft 18 rotates, and the second gear 30 does not rotate.

[0027] Solenoid valves are installed on the inner walls of the feeding tube 11 and the first connecting tube 12. The motor 27, the solenoid valve and the external power supply are electrically connected through wires, and a diode is provided in the circuit composed of the motor 27, the solenoid valve and the external power supply. The diode has the function of blocking reverse current, which is the prior art.

[0028] It should be noted that the two solenoid valves are connected in parallel with the motor 27, and the diode is connected in series with the solenoid valves. The solenoid valve installed on the inner wall of the feeding pipe 11 is opened when powered on and closed when powered off, while the solenoid valve installed on the inner wall of the first connecting pipe 12 is closed when powered on and opened when powered off.

[0029] Furthermore, after the pyrotechnic powder particles are added into the mixing barrel 2, they need to be preliminarily mixed. At this time, a reverse current is passed through the motor 27 to drive the motor 27 to rotate in the reverse direction. At this time, the motor 27 will drive the spline shaft 18 to rotate, and then drive the spline sleeve 19 to rotate, and drive the multiple stirring rods 20 to rotate, so as to stir the pyrotechnic powder particles and mix them. The mixing time is not less than six minutes. At this time, due to the reverse current passed through the circuit, under the blocking effect of the diode, the solenoid valve installed on the inner wall of the feeding tube 11 will not be energized to open, so the processing aid will not be added at this time.

[0030] It is worth mentioning that after the initial mixing is completed, it is necessary to add processing aids for further mixing. At this time, a positive current is passed through the motor 27 to drive the motor 27 to rotate forward. At this time, the inner and outer rings of the one-way bearing 28 will rotate together, thereby driving the spline shaft 18 and the second gear 30 to rotate. The spline shaft 18 drives multiple stirring rods 20 to rotate through the spline sleeve 19, and the second gear 30 drives the third gear 31 to rotate, thereby driving the reciprocating screw 29 to rotate, driving the slider 23 to slide back and forth, and the slider 23 can drive the T-block 26 to move back and forth through the connecting rod 24. Due to the limit between the T-block 26 and the annular T-slot 25, the spline sleeve 19 is driven to slide back and forth, so that the stirring rod 20 rotates and reciprocates at the same time, so that while stirring the pyrotechnic powder particles, the stirring rod 20 can also make the pyrotechnic powder particles reciprocate in the mixing barrel 2, and the motor 27 is passed through After the positive current is passed, the solenoid valve on the inner wall of the feeding tube 11 will also be energized and opened, and then the processing aid in the feeding chamber 903 will flow into the feeding tube 11, and then enter the mixing barrel 2 through the feeding port 21 to mix with the pyrotechnic powder particles, and because the pyrotechnic powder particles move back and forth in the mixing barrel 2, the processing aid flowing into the mixing barrel 2 can be evenly sprinkled on all the pyrotechnic powder particles. Compared with adding processing aids at fixed points, it can avoid that the processing aids are too concentrated, and thus cannot be quickly mixed with all the pyrotechnic powder particles. At this time, the solenoid valve on the inner wall of the first connecting tube 12 is energized and closed, so the air in the vertical tube 3 cannot enter the pressure chamber 901 through the first connecting tube 12. Therefore, at this time, with the addition of processing aids, the weight of the weight platform 6 increases, and the entire weight platform 6 will not drop, and thus the processing aid will not be added to the upper feeding chamber 903 all the time.

[0031] A knocking mechanism is installed on the mixing cylinder 2, and the knocking mechanism includes a sliding cylinder 33 fixedly connected to the upper end of the mixing cylinder 2 through a fixed shaft, a slide plate 34 is sealingly and slidably connected to the inner wall of the sliding cylinder 33, a cross bar 35 is fixedly connected to the side wall of the slide plate 34, one end of the cross bar 35 passes through the side wall of the sliding cylinder 33 and is fixedly connected to a knocking head 36, and a second spring 37 is fixedly connected between the inner wall of the sliding cylinder 33 and the slide plate 34.

[0032] The knocking mechanism also includes an airbag 38 rotatably connected to the inner wall of the mixing cylinder 2, the other end of the airbag 38 is fixedly connected to the side wall of the spline sleeve 19, and a one-way air inlet pipe 39 is fixedly connected to the inner wall of the airbag 38. The one-way air inlet pipe 39 only allows external air to enter the airbag 38. The airbag 38 is connected to the slide cylinder 33 through a second connecting pipe 40.

[0033] Furthermore, in the process of mixing the pyrotechnic powder particles and the processing aid, the reciprocating movement of the spline sleeve 19 will repeatedly squeeze and stretch the airbag 38, and then the air in the airbag 38 will repeatedly enter and exit the slide tube 33 through the second connecting tube 40, thereby driving the slide plate 34 to slide back and forth, driving the cross bar 35 to move back and forth, thereby driving the striking head 36 to move back and forth, constantly striking the side wall of the feeding tube 11, causing the feeding tube 11 to vibrate, thereby preventing part of the processing aid from adhering to the tube wall of the feeding tube 11 when the processing aid is flowing in the feeding tube 11, thereby reducing the loss of the processing aid during the addition process, and maximizing the accuracy of the amount of processing aid added.

[0034] A cleaning mechanism is installed on the mixing barrel 2, and the cleaning mechanism includes an annular cavity 41 opened in the side wall of the mixing barrel 2, and a plurality of jet holes 42 are opened on the inner wall of the annular cavity 41. The airbag 38 is connected to the annular cavity 41 through a one-way air supply pipe 43, and the one-way air supply pipe 43 only allows the air in the airbag 38 to enter the annular cavity 41.

[0035] Furthermore, part of the air in the airbag 38 will enter the annular cavity 41 through the one-way air supply pipe 43, and then the air will be ejected through the multiple jet holes 42. The ejected air jet can blow off the pyrotechnic powder particles adhering to the inner wall of the mixing barrel 2, thereby preventing the pyrotechnic powder particles from adhering to the inner wall of the mixing barrel 2 and causing the loss of pyrotechnic powder particles. At the same time, it can also reduce the number of subsequent manual cleaning of the mixing barrel 2.

[0036] An upper hopper 44 is fixedly connected to the upper end of the mixing cylinder 2 , a discharge pipe 45 is fixedly connected to the side wall of the mixing cylinder 2 , and a valve is installed on the side wall of the discharge pipe 45 .

[0037] In the present invention, firstly, the pyrotechnic powder particles are added into the mixing barrel 2 through the upper hopper 44. At this time, the overall weight of the mixing barrel 2 will increase, and then the weight platform 6 will be given downward pressure, which will drive the installation rod 5 to move downward, and push the sliding plug 4 to move downward, so as to convert the overall gravitational potential energy of the mixing barrel 2 into kinetic energy. At this time, part of the air in the vertical barrel 3 will enter the pressure chamber 901 through the first connecting pipe 12, so that the pressure in the pressure chamber 901 will increase. At this time, the pressure in the pressure chamber 901 will be greater than that in the storage chamber 902, and then the pressure plate 9 will slide downward, so that the pressure in the storage chamber 902 will increase, and then the pressure balance will be maintained. When the pressure plate 9 slides downward, the added air in the storage chamber 902 The processing aid will enter the loading chamber 903 through the one-way feed hole 47 for storage, and the movement distance of the pressure plate 9 determines the amount of the processing aid entering the loading chamber 903, and the movement distance of the pressure plate 9 depends on the movement distance of the slide plug 4, and the movement distance of the slide plug 4 depends on the pressure applied by the weight platform 6, and the pressure applied by the weight platform 6 depends on the weight of the pyrotechnic powder particles inside the mixing barrel 2. Therefore, the amount of pyrotechnic powder particles added to the mixing barrel 2 can determine the amount of the processing aid entering the loading chamber 903. Therefore, the amount of processing aid can be automatically proportioned according to the amount of pyrotechnic powder particles to be processed, without the need for manual weighing and adding, which saves time and effort and improves efficiency.

[0038] After the pyrotechnic powder particles are added into the mixing barrel 2, they need to be preliminarily mixed. At this time, a reverse current is passed through the motor 27 to drive the motor 27 to rotate in the reverse direction. At this time, the motor 27 will drive the spline shaft 18 to rotate, and then drive the spline sleeve 19 to rotate, and drive the multiple stirring rods 20 to rotate, so as to stir the pyrotechnic powder particles and mix them. The mixing time is not less than six minutes. At this time, due to the reverse current passed through the circuit, the solenoid valve installed on the inner wall of the feeding tube 11 will not be energized and opened under the blocking effect of the diode, so that the processing aid will not be added at this time.

[0039] When the initial mixing is completed, it is necessary to add processing aids for further mixing. At this time, a positive current is passed through the motor 27 to drive the motor 27 to rotate forward. At this time, the inner and outer rings of the one-way bearing 28 will rotate together, thereby driving the spline shaft 18 and the second gear 30 to rotate. The spline shaft 18 drives multiple stirring rods 20 to rotate through the spline sleeve 19, and the second gear 30 drives the third gear 31 to rotate, thereby driving the reciprocating screw 29 to rotate, driving the slider 23 to slide back and forth, and the slider 23 can drive the T-block 26 to move back and forth through the connecting rod 24. Due to the limit between the T-block 26 and the annular T-slot 25, the spline sleeve 19 is driven to slide back and forth, so that the stirring rod 20 rotates and reciprocates at the same time, so that while stirring the pyrotechnic powder particles, the stirring rod 20 can also make the pyrotechnic powder particles reciprocate in the mixing barrel 2, and the motor 27 passes a positive current. After the flow, the solenoid valve on the inner wall of the feeding tube 11 will also be energized and opened, and then the processing aid in the feeding chamber 903 will flow into the feeding tube 11, and then enter the mixing barrel 2 through the feeding port 21 to mix with the pyrotechnic powder particles, and because the pyrotechnic powder particles move back and forth in the mixing barrel 2, the processing aid flowing into the mixing barrel 2 can be evenly sprinkled on all the pyrotechnic powder particles. Compared with the fixed-point addition of processing aids, it can avoid the processing aids being too concentrated, and then unable to be quickly mixed with all the pyrotechnic powder particles. At this time, the solenoid valve on the inner wall of the first connecting tube 12 is energized and closed, so the air in the vertical tube 3 cannot enter the pressure chamber 901 through the first connecting tube 12. Therefore, at this time, with the addition of processing aids, the weight of the weight platform 6 increases, and the entire weight platform 6 will not drop, and thus the processing aid will not be added to the upper feeding chamber 903 all the time.

[0040] In addition, when the pyrotechnic powder particles are initially added, when the weight platform 6 descends, it will synchronously drive the rack 17 to move downward, and then drive the first gear 16 to rotate, so that the sealing ball 13 rotates, and then the flow port 14 rotates, so that the flow port 14 opens, and the downward movement distance of the rack 17 is determined by the amount of pyrotechnic powder particles. The more pyrotechnic powder particles are added to the mixing barrel 2, the greater the downward movement distance of the rack 17, and the greater the angle of rotation of the sealing ball 13, so that the flow port 14 opens more, so that when the amount of processing aids to be added is more, The larger the flow port 14 is, the faster the speed of adding the processing aid can be. When the amount of processing aid added is less, the smaller the flow port 14 is, the slower the speed of adding the processing aid can be. Since the amount of processing aid is small, if it is added quickly at one time, it will all enter the mixing barrel 2 in a very short time, and the reciprocating movement of the pyrotechnic powder particles takes time, which will make it impossible for the processing aid to be evenly sprinkled on all the pyrotechnic powder particles. Therefore, by adjusting the speed of adding the processing aid by the amount of the processing aid, the processing aid can be better mixed evenly with the pyrotechnic powder particles.

[0041] In the process of mixing the pyrotechnic powder particles and the processing aid, the reciprocating movement of the spline sleeve 19 will repeatedly squeeze and stretch the airbag 38, and then the air in the airbag 38 will repeatedly enter and exit the slide cylinder 33 through the second connecting pipe 40, thereby driving the slide plate 34 to slide back and forth, driving the cross bar 35 to move back and forth, thereby driving the knocking head 36 to move back and forth, constantly knocking on the side wall of the feeding tube 11, causing the feeding tube 11 to vibrate, thereby preventing part of the processing aid from adhering to the tube wall of the feeding tube 11 when the processing aid is flowing in the feeding tube 11, thereby reducing the loss of the processing aid during the addition process, and maximizing the accuracy of the amount of processing aid added.

[0042] In addition, part of the air in the airbag 38 will enter the annular cavity 41 through the one-way air supply pipe 43, and then the air will be ejected through multiple air jet holes 42. The ejected air jet can blow off the pyrotechnic powder particles adhering to the inner wall of the mixing barrel 2, thereby preventing the pyrotechnic powder particles from adhering to the inner wall of the mixing barrel 2 and causing the loss of pyrotechnic powder particles. At the same time, it can also reduce the number of subsequent manual cleaning of the mixing barrel 2.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for adding a pyrotechnic powder particle processing aid, characterized in that: include: A base (1) and a mixing cylinder (2); The feeding mechanism comprises a vertical cylinder (3) fixedly connected to the upper end of a base (1), the inner wall of the vertical cylinder (3) is sealingly and slidably connected to a sliding plug (4), the upper end of the sliding plug (4) is fixedly connected to a mounting rod (5), the upper end of the mounting rod (5) passes through the vertical cylinder (3) and is fixedly connected to a weight platform (6), the mixing cylinder (2) is fixedly connected to the upper end of the weight platform (6), a first spring (7) is fixedly connected between the inner bottom of the vertical cylinder (3) and the sliding plug (4), the upper end of the base (1) is fixedly connected to a feeding box (8) via a bracket, the inner wall of the feeding box (8) is sealingly and slidably connected to a pressure plate (9), and the inner wall of the feeding box (8) is sealingly and fixedly connected to A sealing plate (46) is connected, and the pressure plate (9) and the sealing plate (46) divide the interior of the feeding box (8) into three parts: a pressure chamber (901), a storage chamber (902) and a feeding chamber (903); the lower end of the feeding box (8) is fixedly connected to a feeding pipe (11), the inner wall of the storage chamber (902) is fixedly connected to a one-way feeding pipe (32), the upper end of the sealing plate (46) is provided with a one-way feeding hole (47), the storage chamber (902) is connected to the feeding chamber (903) through the one-way feeding hole (47), the upper end of the mixing cylinder (2) is provided with a feeding port (21), and the vertical cylinder (3) is connected to the pressure chamber (901) through a first connecting pipe (12); A flow regulating mechanism, the flow regulating mechanism comprising a sealing ball (13) sealingly rotatably connected to the inner wall of a feeding pipe (11), and a flow opening (14) is provided on a side wall of the sealing ball (13).

2. A device for adding a pyrotechnic powder particle processing aid according to claim 1, characterized in that: in: The flow regulating mechanism further comprises a rotating shaft (15) rotatably connected to the side wall of the sealing sphere (13); one end of the rotating shaft (15) passes through the side wall of the feeding tube (11) and is fixedly connected to a first gear (16); an upper end of the weight platform (6) is fixedly connected to a rack (17); the first gear (16) is meshingly connected to the rack (17).

3. A device for adding a pyrotechnic powder particle processing aid according to claim 1, characterized in that: in: The mixing barrel (2) is provided with a mixing mechanism, the mixing mechanism comprising a motor (27) fixedly connected to the side wall of the mixing barrel (2), the output end of the motor (27) passing through the inner wall of the mixing barrel (2) and fixedly connected to a one-way bearing (28), the inner ring of the one-way bearing (28) being fixedly connected to a spline shaft (18), the side wall sliding sleeve of the spline shaft (18) being provided with a spline sleeve (19), and the side wall of the spline sleeve (19) being fixedly connected to a plurality of stirring rods (20).

4. A device for adding a pyrotechnic powder particle processing aid according to claim 3, characterized in that: in: The mixing mechanism further comprises a sliding rod (22) fixedly connected to the inner wall of the mixing barrel (2), the side wall of the sliding rod (22) being slidably connected to a sliding block (23), the side wall of the sliding block (23) being fixedly connected to a connecting rod (24), the side wall of the spline sleeve (19) being provided with an annular T-groove (25), the inner wall of the annular T-groove (25) being slidably connected to a T-block (26), the other end of the connecting rod (24) being fixedly connected to the T-block (26), the inner wall of the mixing barrel (2) being rotatably connected to a reciprocating screw (29), the side wall of the reciprocating screw (29) being threadedly connected to the sliding block (23), the outer ring side wall of the one-way bearing (28) being fixedly connected to a second gear (30), the side wall of the reciprocating screw (29) being fixedly connected to a third gear (31), the second gear (30) being meshingly connected to the third gear (31).

5. A device for adding a pyrotechnic powder particle processing aid according to claim 4, characterized in that: in: Solenoid valves are installed on the inner walls of the feeding pipe (11) and the first connecting pipe (12); the motor (27), the solenoid valve and the external power supply are electrically connected via a wire; and a diode is provided in the circuit formed by the motor (27), the solenoid valve and the external power supply.

6. A device for adding a pyrotechnic powder particle processing aid according to claim 5, characterized in that: in: The mixing cylinder (2) is provided with a knocking mechanism, the knocking mechanism comprising a sliding cylinder (33) fixedly connected to the upper end of the mixing cylinder (2) via a fixed shaft, the inner wall of the sliding cylinder (33) being sealingly and slidably connected to a slide plate (34), the side wall of the slide plate (34) being fixedly connected to a cross bar (35), one end of the cross bar (35) passing through the side wall of the sliding cylinder (33) and being fixedly connected to a knocking head (36), and a second spring (37) being fixedly connected between the inner wall of the sliding cylinder (33) and the slide plate (34).

7. A device for adding a pyrotechnic powder particle processing aid according to claim 6, characterized in that: in: The knocking mechanism further comprises an airbag (38) rotatably connected to the inner wall of the mixing cylinder (2); the other end of the airbag (38) is fixedly connected to the side wall of the spline sleeve (19); a one-way air inlet pipe (39) is fixedly connected to the inner wall of the airbag (38); and the airbag (38) is connected to the slide cylinder (33) via a second connecting pipe (40).

8. A device for adding a pyrotechnic powder particle processing aid according to claim 7, characterized in that: in: The mixing barrel (2) is provided with a cleaning mechanism, the cleaning mechanism comprising an annular cavity (41) formed in the side wall of the mixing barrel (2), the inner wall of the annular cavity (41) being provided with a plurality of air injection holes (42), and the air bag (38) being connected to the annular cavity (41) via a one-way air supply pipe (43).

9. The device for adding a pyrotechnic powder particle processing aid according to claim 1, characterized in that: in: The upper end of the mixing cylinder (2) is fixedly connected to an upper hopper (44), the side wall of the mixing cylinder (2) is fixedly connected to a discharge pipe (45), and a valve is installed on the side wall of the discharge pipe (45).

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