Propellant mixing device for mixing propellant

Abstract

The utility model discloses an explosive mixing device for mixing propellant powder, which belongs to the technical field of explosive mixing equipment and comprises an explosive mixer, an elevator and an explosive pouring component, the explosive pouring component comprises an explosive pouring frame, a charging basket and an explosive pouring mechanism, the charging basket and the explosive pouring mechanism are arranged on the explosive pouring frame, and the propellant powder in the charging basket is poured into a hopper of the elevator through the explosive pouring mechanism. The propellant powder is lifted to the position above the powder mixer through a lifting machine and poured into the powder mixer; different batches of single-base propellant powder are mixed and fully mixed through the powder mixing assembly on the rack and then are discharged into the material barrel below. The powder pouring mechanism is used for automatically feeding materials to the elevator, the elevator is used for lifting propellant powder and pouring the propellant powder into the powder mixer, the powder mixing assembly is used for automatically mixing the propellant powder, mixing of different batches of single-base propellant powder is achieved, and the powder mixing device has the advantages of being reasonable in technological process layout, high in mechanization degree, easy to operate, good in reliability and safety, high in operation efficiency and suitable for popularization and application. Economic benefits are remarkable, and popularization and application are convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of pharmaceutical mixing equipment, and specifically relates to a mixing device for mixing propellants. Background Technology

[0002] Propellant is composed of one or more of single-base, double-base, and triple-base gunpowder. Because gunpowder is flammable, it produces a large amount of high-temperature, toxic gases during combustion, making the mixing process inherently dangerous. Currently, existing gunpowder mixing equipment often uses enclosed rotary mixers. However, the feeding of these mixers is mostly done manually, posing a significant safety hazard to operators. Furthermore, during the mixer's rotation, the gunpowder continuously rubs against the inner wall, generating heat that is difficult to dissipate within the sealed container, also presenting a significant safety risk. Utility Model Content

[0003] To address the above problems, this invention provides a propellant mixing device for mixing propellants.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A propellant mixing device includes a mixer, a hoist, and a pouring assembly. The pouring assembly includes a pouring rack with a feed hopper and a pouring mechanism. The pouring rack is located at the bottom of the hoist. The pouring mechanism pours the propellant from the feed hopper into the hopper of the hoist. The hoist lifts the propellant above the mixer and pours it into the mixer. The mixer includes a frame and a mixing assembly mounted on the frame. The mixing assembly has an inlet at the top and an outlet at the bottom, with a feed hopper for receiving the propellant located below the outlet.

[0006] Furthermore, the side of the mixer is provided with multiple elevators, the material bucket is set on the roller conveyor of the conveyor, the roller conveyor is set through the frame and is located below the mixing assembly, and the elevator is set on the side of the roller conveyor.

[0007] Furthermore, the bottom of the roller conveyor is equipped with an electronic scale corresponding to the discharge port of the mixing component, which is used to weigh the material barrel online during discharge.

[0008] Furthermore, there are four elevators, symmetrically arranged on both sides of the roller conveyor, and the high discharge ends of the four elevators all extend above the feed inlet at the top of the mixing assembly.

[0009] Furthermore, the mixing assembly includes a rotary mixer I, a fixed mixer, and a rotary mixer II arranged sequentially from top to bottom. Both rotary mixer I and rotary mixer II are conical containers that are larger at the top and smaller at the bottom, and both are capable of rotation. The fixed mixer is a conical container that is smaller at the top and larger at the bottom, and is fixed to the frame. The top open end of rotary mixer I is the feed inlet, and the bottom outlet of rotary mixer I is located above the cone tip of the fixed mixer. The four edges of the fixed mixer are located inside the top edge of rotary mixer II, and the bottom of rotary mixer II is provided with a discharge outlet. Both rotary mixer I and rotary mixer II are provided with a discharge switch at the bottom.

[0010] Furthermore, the first rotary mixer and the second rotary mixer are respectively connected to corresponding rotating components, which are mounted on the frame and used to drive the first rotary mixer and the second rotary mixer to rotate.

[0011] Furthermore, a conical feeder is provided between the outlet of the first rotary mixer and the cone tip of the fixed mixer. The cone tip of the feeder is connected to the portal frame at the top of the machine frame via a vertical rod. The vertical rod penetrates the inner cavity of the first rotary mixer and is connected to the feeder through its outlet. Several baffles are alternately arranged on the inner walls of the first and second rotary mixers, and several baffles are alternately arranged on the outer wall of the fixed mixer.

[0012] Furthermore, the baffle plate is V-shaped, with its tip pointing upwards and its two open ends pointing downwards. The bottom edge of the baffle plate is vertically fixed to the inner walls of the first and second rotary mixers and the outer wall of the fixed mixer.

[0013] Furthermore, the dispensing mechanism includes a tray and a pushing cylinder. The tray is positioned above the dispensing frame, and a discharge hopper, wider at the top and narrower at the bottom, is located below the tray. The discharge hopper is positioned on the support platform of the dispensing frame, and a discharge pipe is located on the bottom side of the discharge hopper. An inclined guide trough is located below the outlet end of the discharge pipe, and the lower outlet of the guide trough can extend to the top of the bucket of the elevator. The material bucket is a quadrangular prism with its circular opening facing downwards, inverted on the tray. The opening is located in the middle of the inlet of the discharge hopper. The material bucket is connected to the tray around its perimeter by positioning components. The four corners of the tray are connected to the dispensing frame by pushing cylinders, and the cylinder body of the pushing cylinder is located in the lower middle part of the side of the dispensing frame.

[0014] Furthermore, the cylinder body of the pushing cylinder is mounted on the lower support plates on both sides of the medicine-discharging rack. The piston rod of the pushing cylinder passes through the lower support plate and is connected to the guide column. The upper end of the guide column passes through the upper support plate and is hinged to the connecting rod. The upper end of the connecting rod is rotatably connected to the tray via a ball joint. Both the lower support plate and the upper support plate are connected to the medicine-discharging rack via inclined bracing plates. The four corner columns of the medicine-discharging rack are arranged in pairs on both sides of the lower horizontal section of the elevator.

[0015] The technological advancements achieved by this invention compared to existing technologies are as follows:

[0016] This invention involves placing barrels containing different batches of single-base propellant onto a pouring rack, where the propellant is poured into the hopper of an elevator via a pouring mechanism. The elevator then pours the propellant into a mixer, where a mixing component ensures the mixing of different batches. After thorough mixing, the propellant is discharged into a lower barrel. This invention achieves automatic feeding via the elevator, pouring the propellant into the mixer via the elevator, and automatic mixing via the mixing component, thus mixing different batches of single-base propellant. It boasts advantages such as a rational process layout, high mechanization, simple operation, good reliability and safety, high operating efficiency, significant economic benefits, and ease of widespread application. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] In the attached diagram:

[0019] Figure 1 A perspective view of a propellant mixing device for mixing propellants, provided for an embodiment of this utility model;

[0020] Figure 2 for Figure 1 Front view of the mixing device;

[0021] Figure 3 for Figure 2 Top view of the mixing device;

[0022] Figure 4 This is a schematic diagram of the longitudinal section of the drug mixing component in an embodiment of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the mixing device in an embodiment of the present invention (with part of the outer shell removed from the upper rotating component);

[0024] Figure 6 This is a front view of the medicine pouring component in an embodiment of this utility model;

[0025] Figure 7 This is a diagram showing the arrangement of the medicine pouring assembly relative to the lifting machine in an embodiment of this utility model;

[0026] In the picture:

[0027] 1-Frame; 2-Elevator; 20-Hopper; 3-Discharge rack; 4-Material bucket; 40-Material inlet; 5-Roller conveyor; 6-Electronic scale; 7-Rotary mixer one; 8-Fixed mixer; 9-Rotary mixer two; 10-Discharge switch; 11-Rotating component; 12-Equalizer; 13-Upright pole; 14-Gantry frame; 15-Baffle plate; 16-Pattern; 17-Push cylinder; 18-Discharge hopper; 19-Support platform; 21-Discharge pipe; 22-Guide trough; 23-Positioning component; 24-Guide sleeve; 25-Lower support plate; 26-Guide column; 27-Upper support plate; 28-Connecting rod; 29-Spherical hinge; 30-Driving gear; 31-Driven gear; 32-Outer shell; 33-Fireproof screen. Detailed Implementation

[0028] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, a propellant mixing device includes a mixer, an elevator 2, and a pouring assembly. The pouring assembly includes a pouring rack 3, a feed hopper 4 on top of the rack, and a pouring mechanism. The pouring rack 3 is located at the bottom of the elevator 2. The pouring mechanism pours the propellant from the feed hopper 4 into the hopper 20 of the elevator 2. The elevator 2 lifts the propellant above the mixer and pours it into the mixer. The mixer includes a frame 1 and a mixing assembly mounted on the frame 1. The mixing assembly has an inlet at the top and an outlet at the bottom. The feed hopper 4 is located below the outlet. Multiple elevators 2 are located on the side of the mixer. The feed hopper 4 is mounted on a conveyor roller 5, which passes through the frame 1 and is located below the mixing assembly. The elevators 2 are located on the side of the roller 5. Multiple pouring components are used to pour different batches of single-base propellant into different elevator hoppers. These elevators can be speed-adjusted according to process requirements to achieve feeding in different proportions. Multiple elevators lift different batches of single-base propellant and pour them into a mixer for mixing. The feed and discharge buckets are then transported by conveyor rollers, improving work efficiency and safety.

[0030] In addition, the conveyor can also be a belt conveyor, or it can consist of two parts: a feeding conveyor and a discharging conveyor, which have the same conveying function as a roller conveyor.

[0031] As a preferred structure, such as Figure 2 , 5 As shown, the bottom of the roller conveyor 5 is equipped with an electronic scale 6 corresponding to the discharge port of the mixing component. The electronic scale 6 is used to weigh the material in the material bucket 4 online during discharge. By using the electronic scale to weigh the material in the material bucket, the material can be conveyed to the subsequent roller conveyor to complete automatic weighing and conveying.

[0032] In specific design, such as Figure 3 As shown, there are four elevators 2, symmetrically arranged on both sides of the roller conveyor 5. The discharge ends of all four elevators 2 extend above the feed inlet at the top of the mixing assembly. This structure allows for the simultaneous mixing of 2-4 batches of single-base propellants, making it convenient and quick to use. Furthermore, the lifting speed of each elevator is set according to process requirements. For example, if elevator 1 requires a feed volume of 10 and elevator 2 requires a feed volume of 5, then elevator 1 will operate at twice the speed of elevator 2.

[0033] In specific embodiments of this utility model, such as Figure 4 , 5 As shown, the mixing assembly includes a rotary mixer 7, a fixed mixer 8, and a rotary mixer 9 arranged sequentially from top to bottom. Both the rotary mixer 7 and the rotary mixer 9 are conical containers that are larger at the top and smaller at the bottom, and both can rotate. The fixed mixer 8 is a conical container that is smaller at the top and larger at the bottom, and is fixed to the frame 1. The top open end of the rotary mixer 7 is the feed inlet, and the bottom outlet of the rotary mixer 7 is located above the cone tip of the fixed mixer 8. The four edges of the fixed mixer 8 are located inside the top edge of the rotary mixer 9, and the bottom of the rotary mixer 9 is provided with a discharge outlet. Both the rotary mixer 7 and the rotary mixer 9 are provided with a discharge switch 10 at the bottom. Different batches of single-base propellant first fall randomly into rotary mixer 7. After initial mixing in rotary mixer 7, they fall onto fixed mixer 8 for further mixing, and finally fall into rotary mixer 9 for further mixing, achieving thorough mixing of the propellant. In actual manufacturing, a solenoid valve is used as the feeding switch to automatically control the discharge rate. When changing the feed hopper, the feeding switch is turned off to stop the propellant feeding.

[0034] In specific design, such as Figure 5As shown, the first rotary mixer 7 and the second rotary mixer 9 are respectively connected to corresponding rotating components 11. The rotating components 11 are mounted on the frame 1 and are used to drive the first rotary mixer 7 and the second rotary mixer 9 to rotate. The rotating component 11 includes a motor (not shown in the figure), a driving gear 30, and a driven gear 31 meshing with it. The output shaft of the motor is coaxially fixed with the driving gear 30. The driven gear 31 is mounted on the top outer circle of the first rotary mixer 7 and the second rotary mixer 9. The driving gear 30 and the driven gear 31 are provided with a housing 32, which can protect the internal driving gear 30 and driven gear 31 and prevent external contaminants from entering between the meshing surfaces of the two gears.

[0035] Further optimize the above solution, such as Figure 4 As shown, a conical leveling device 12 is provided between the outlet of the rotary mixer 7 and the cone tip of the fixed mixer 8. The cone tip of the leveling device 12 is connected to the portal frame 14 at the top of the frame 1 via a vertical rod 13. The vertical rod 13 vertically penetrates the inner cavity of the rotary mixer 7 and is connected to the leveling device 12 through its outlet. Several baffle plates 15 are alternately arranged on the inner walls of the rotary mixer 7 and the rotary mixer 9, and several baffle plates 15 are alternately arranged on the outer wall of the fixed mixer 8. The propellant falls onto the leveling device to disperse the propellant. At the same time, as the propellant falls with gravity, it is dispersed by the baffle plates on the rotary mixer 7, the fixed mixer 8, and the rotary mixer 9 in sequence, achieving thorough mixing.

[0036] In the specific production process, such as Figure 5 As shown, the baffle plate 15 is V-shaped, with its pointed end facing upwards and its two open ends facing downwards. The bottom edge of the baffle plate 15 is vertically fixed to the inner walls of the rotary mixer 7 and the rotary mixer 9, as well as the outer wall of the fixed mixer 8. In this embodiment, the baffle plate is a right-angled plate, allowing the propellant to slide smoothly down the outer wall of the guide plate, achieving the purpose of dispersing and mixing the propellant during its descent.

[0037] In specific embodiments of this utility model, such as Figure 6 , 7As shown, the medicine pouring mechanism includes a tray 16 and a pusher cylinder 17. The tray 16 is positioned above the medicine pouring rack 3. Below the tray 16 is a discharge hopper 18, which is wider at the top and narrower at the bottom. The discharge hopper 18 is positioned on the support platform 19 of the medicine pouring rack 3. A discharge pipe 21 is provided on the bottom side of the discharge hopper 18. An inclined guide groove 22 is provided below the outlet end of the discharge pipe 21. The lower outlet of the guide groove 22 can extend to the top of the hopper 20 of the elevator 2. The material bucket 4 is a quadrangular prism with its circular material inlet 40 facing downwards and inverted on the tray 16. The material inlet 40 is correspondingly positioned in the middle of the inlet of the discharge hopper 18. The four sides of the material bucket 4 are connected to the tray 16 by positioning parts 23. The four corners of the tray 16 are respectively connected to the medicine pouring rack 3 by pusher cylinders 17. The cylinder body of the pusher cylinder 17 is located in the lower middle part of the side of the medicine pouring rack 3. Under gravity, the propellant in the feed hopper falls through the feed inlet into the discharge end. The four corner pusher cylinders can be used to raise and lower the feed hopper, causing it to swing in different directions with an amplitude selectable within ±10°, thus ensuring all the propellant is discharged. The propellant then enters the guide trough through the discharge pipe of the discharge hopper, and then onto the conveyor belt of the elevator. The baffles on the conveyor belt, combined with the conveyor belt itself, form a hopper that repeatedly lifts small amounts of propellant to a high position before it falls into the rotary mixer 7.

[0038] In the specific production process, such as Figure 6 As shown, the cylinder body of the pushing cylinder 17 is mounted on the lower support plates 25 on both sides of the medicine pouring rack 3. The piston rod of the pushing cylinder 17 passes through the lower support plate 25 and is connected to the guide column 26. The upper end of the guide column 26 passes through the guide sleeve 24 at the end of the upper support plate 27 and is hinged to the connecting rod 28. The upper end of the connecting rod 28 is rotatably connected to the tray 16 through a ball joint 29. Both the lower support plate 25 and the upper support plate 27 are connected to the medicine pouring rack 3 through inclined bracing plates. The four corner columns of the medicine pouring rack 3 are arranged in pairs on both sides of the lower horizontal section of the elevator 2. During the medicine pouring process, the pushing cylinder drives the guide column and the connecting rod to rise and fall, thereby driving the four corner parts of the tray to rise and fall alternately. In addition, a displacement sensor can be installed on the pushing cylinder to make the rising and falling amplitude of different pushing cylinders more consistent.

[0039] To further optimize the above solution, the conveyor, electronic scale, elevator, pusher cylinder, rotary motor, and discharge switch are all connected to the controller, and a touch screen connected to the controller is installed. This touch screen enables human-machine interaction, which is existing technology and will not be elaborated further. By inputting different parameters, the speeds of the conveyor, elevator, and rotary motor can be controlled, as well as the lifting and lowering amplitude of the pusher cylinder, the opening degree of the discharge switch, and the start and stop of each component. By controlling the speed of different elevators, their speed is automatically matched to the feeding amount of different batches of single-base propellant.

[0040] Meanwhile, fireproof screens 33 are installed around the mixing device. After the personnel invert the material bucket onto the tray, they start the equipment via the touch screen and then exit. The hoist automatically lifts the propellant to a high position and pours it into the mixing device. The fireproof screens isolate the mixing device, further improving the safety of the mixing process.

[0041] The specific application process of this utility model is as follows:

[0042] a. After the program in the controller starts, the operator manually inverts several batches of material buckets 4 onto the tray 16 of the unloading rack 3, and places the empty material buckets 4 onto the feed side roller conveyor 5. The quantity of each batch is entered on the touch screen, and the elevator is started automatically.

[0043] b. The propellant is poured into the upper rotating mixer 7 of the mixer via the conveyor belt of the elevator 2. Under the action of gravity, the propellant falls into the fixed mixer 8 and the rotating mixer 9 in sequence. The mixed propellant is then poured into the empty material tank 4 below.

[0044] c. Empty material bucket 4 is pre-weighed by electronic scale 6. When the material bucket reaches the set weight, the discharge switch 10 below the rotary mixer 7 is closed. The bucket, having reached the set weight, waits in place for a few seconds. If no material falls, the bucket 4 is conveyed to the discharge side roller conveyor 5 and output. Then, the loading side roller conveyor 5 conveys the empty bucket back to electronic scale 6, and the discharge switch 10 is reopened to continue mixing, completing one cycle.

[0045] After finishing work and confirming there is no material on the mixer, first press the "Stop" button on the control box, then turn off the switch of the electrical cabinet inside the workbench on the controller, and finally turn off the AC power switch. Clean up the site, remove the explosives, wipe the machine tool, apply oil to the rails, and cover it with a dust cover.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A mixing device for mixing propellants, characterized in that: The device includes a mixing unit, an elevator, and a dispensing assembly. The dispensing assembly includes a dispensing rack, a feed hopper, and a dispensing mechanism. The dispensing rack is located at the bottom of the elevator. The dispensing mechanism is used to pour the propellant from the feed hopper into the elevator's hopper. The elevator is used to lift the propellant to the top of the mixing unit and pour it into the mixing unit. The mixing unit includes a frame and a mixing assembly mounted on the frame. The mixing assembly has an inlet at the top and an outlet at the bottom. A feed hopper for receiving the propellant is located below the outlet.

2. A mixing device for mixing propellants according to claim 1, characterized in that: The mixing device is equipped with multiple elevators on its side. The material hopper is set on the roller conveyor of the conveyor. The roller conveyor runs through the frame and is located below the mixing assembly. The elevators are set on the side of the roller conveyor.

3. A mixing device for mixing propellants according to claim 2, characterized in that: The bottom of the roller conveyor is equipped with an electronic scale corresponding to the discharge port of the mixing component. The electronic scale is used to weigh the material barrel online during discharge.

4. A mixing device for mixing propellants according to claim 2, characterized in that: There are four elevators, symmetrically arranged on both sides of the roller conveyor, and the high discharge ends of the four elevators all extend above the feed inlet at the top of the mixing assembly.

5. A mixing device for mixing propellants according to claim 1, characterized in that: The mixing assembly includes a rotary mixer I, a fixed mixer, and a rotary mixer II arranged sequentially from top to bottom. Both rotary mixer I and rotary mixer II are conical containers that are larger at the top and smaller at the bottom, and both can rotate. The fixed mixer is a conical container that is smaller at the top and larger at the bottom, and is fixed to the frame. The top open end of rotary mixer I is the feed inlet, and the bottom outlet of rotary mixer I is located above the cone tip of the fixed mixer. The four edges of the fixed mixer are located inside the top edge of rotary mixer II, and the bottom of rotary mixer II is provided with a discharge outlet. Both rotary mixer I and rotary mixer II are provided with a discharge switch at the bottom.

6. A mixing device for mixing propellants according to claim 5, characterized in that: The first rotary mixer and the second rotary mixer are respectively connected to corresponding rotating components, which are mounted on the frame and used to drive the first rotary mixer and the second rotary mixer to rotate.

7. A mixing device for mixing propellants according to claim 5, characterized in that: A conical leveling device is provided between the outlet of the first rotary mixer and the cone tip of the fixed mixer. The cone tip of the leveling device is connected to the portal frame at the top of the machine frame through a vertical rod. The vertical rod penetrates the inner cavity of the first rotary mixer and is connected to the leveling device through its outlet. Several baffles are alternately arranged on the inner walls of the first and second rotary mixers, and several baffles are alternately arranged on the outer wall of the fixed mixer.

8. A mixing device for mixing propellants according to claim 7, characterized in that: The baffle plate is V-shaped, with its tip pointing upwards and its two open ends pointing downwards. The bottom edge of the baffle plate is vertically fixed to the inner walls of the first and second rotary mixers and the outer wall of the fixed mixer.

9. A mixing device for mixing propellants according to any one of claims 1-8, characterized in that: The dispensing mechanism includes a tray and a pusher cylinder. The tray is positioned above the dispensing frame, and a discharge hopper (larger at the top and smaller at the bottom) is located below the tray. The discharge hopper is positioned on the support platform of the dispensing frame. A discharge pipe is located on the bottom side of the discharge hopper, and an inclined guide trough is located below the outlet end of the discharge pipe. The lower outlet of the guide trough can extend to the top of the bucket of the elevator. The material bucket is a quadrangular prism with its circular opening facing downwards, inverted on the tray. The opening is located in the middle of the inlet of the discharge hopper. The material bucket is connected to the tray by positioning components. The four corners of the tray are connected to the dispensing frame by pusher cylinders, and the cylinder body of the pusher cylinder is located in the lower middle part of the side of the dispensing frame.

10. A mixing device for mixing propellants according to claim 9, characterized in that: The cylinder body of the pusher cylinder is mounted on the lower support plates on both sides of the medicine-discharging rack. The piston rod of the pusher cylinder passes through the lower support plate and is connected to the guide column. The upper end of the guide column passes through the upper support plate and is hinged to the connecting rod. The upper end of the connecting rod is rotatably connected to the tray through a ball joint. Both the lower support plate and the upper support plate are connected to the medicine-discharging rack through diagonal bracing plates. The four corner columns of the medicine-discharging rack are arranged in pairs on both sides of the lower horizontal section of the elevator.

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