Modified ammonium perchlorate and preparation device thereof

Abstract

The invention discloses modified ammonium perchlorate and a preparation device thereof.The preparation device comprises a power shell, a first driving mechanism, a mixing shell, a second driving mechanism, a discharging frame, a self-cleaning assembly, a sliding support, a cleaning frame, a feeding cover, a discharging hopper and an observation window; a first speed reducer in the first driving mechanism and a second speed reducer in the second driving mechanism are mounted on the two sides of the interior of the power shell in an embedded mode correspondingly; according to the invention, the first transmission rod, the first connecting frame and the first connecting ring which are rotationally connected with one another form a universal shaft structure at one end of the mixing shell, and meanwhile, the second transmission rod, the second connecting frame and the second connecting ring form a universal shaft structure at the other end of the mixing shell, so that the mixing shell can be driven to reciprocate in a three-dimensional space; the coating effect of the processed ammonium perchlorate is guaranteed; and the self-cleaning assembly automatically scrapes products adhered to the transmission material plate, so that safe production is guaranteed, meanwhile, manual participation in the cleaning process is not needed, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of chemical product production, and in particular to a modified ammonium perchlorate preparation device. Background Art

[0002] Solid rocket engines use solid propellant as their power source. Generally, solid propellant coated with sodium dodecyl sulfate produces a large amount of tail smoke during the combustion process. Especially during the launch of air-to-air missiles, it is very easy to be discovered and intercepted by the enemy. It does not have strategic concealment function. Therefore, it is necessary to research and develop a modified ammonium perchlorate to achieve smokeless or low smoke and ensure the concealment of the missile launch process.

[0003] Ammonium perchlorate is a colorless or white crystal with a pungent odor. It is easily soluble in water, insoluble in ethanol and acetone, but soluble in methanol. It is a strong oxidant. When mixed with reducing agents, organic matter, flammable substances such as sulfur, phosphorus or metal powder, it can form an explosive mixture. It can explode when heated sharply. At room temperature, ammonium perchlorate is very stable. Coating ammonium perchlorate can effectively reduce its hygroscopicity, prevent powder agglomeration, and improve its dispersibility and compatibility in propellants. In the process of coating and modifying ammonium perchlorate, a mixing preparation device needs to be used. Production and processing, the existing production equipment for preparing modified ammonium perchlorate can basically meet the daily use needs, but there are still certain shortcomings. First, the mixing structure of the existing mixing preparation device is simple, which affects the coating effect of the ammonium perchlorate after processing; second, the functionality of the existing mixing preparation device is single, and the discharging platform cannot be cleaned. In order to ensure the safe production, the products that fall onto the platform during the discharging process need to be cleaned manually, which increases the labor intensity of the staff; therefore, it is necessary to design a modified ammonium perchlorate preparation device. Summary of the invention

[0004] The purpose of the present invention is to provide a modified ammonium perchlorate preparation device, so as to solve the problems that the mixing structure of the existing mixing preparation device is simple, which affects the coating effect of the ammonium perchlorate after processing; and the mixing preparation device has a single functionality and cannot clean the discharging platform. In order to ensure the safe production, the products that fall onto the platform during the discharging process need to be cleaned manually, which increases the labor intensity of the staff.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a modified ammonium perchlorate preparation device, comprising a power shell, a first driving mechanism, a mixing shell, a second driving mechanism, a discharging rack, a self-cleaning component, a sliding bracket, a cleaning frame, a feed cover, a discharging hopper and an observation window, wherein the first reducer in the first driving mechanism and the second reducer in the second driving mechanism are respectively embedded on both sides of the interior of the power shell, the output end of the first reducer is fixedly connected to a first transmission rod, one end of the first transmission rod is rotatably connected to a first connecting frame, and the first connecting frame is rotatably connected to a first connecting ring, and the first connecting ring is fixedly sleeved on one end of the mixing shell. The second end of the mixing shell is fixedly sleeved with a second connecting ring, the second connecting ring is rotatably connected with a second connecting frame, the second connecting frame is rotatably connected with a second transmission rod, and the second transmission rod is cooperatively connected to the output end of the second reducer; a discharging rack is arranged at the bottom of one side of the power shell, and the transmission wheels in the self-cleaning assembly are slidably connected in the arc grooves symmetrically opened on both sides of the discharging rack, and a transmission material plate is cooperatively wound on the transmission wheel, a support frame is symmetrically arranged at the bottom of one side of the power shell, and the support frame is located below the transmission material plate, a top pressure cylinder is fixedly sleeved in the through grooves evenly opened on the support frame, and a cleaning support plate is fixedly connected to the output end of the top pressure cylinder.

[0006] As a further technical solution of the present invention, the first driving mechanism is composed of a first reducer, a first motor, a first transmission rod, a first connecting frame and a first connecting ring. The first reducer is connected to the output end of the first motor, and the first motor is embedded in a groove starting from one side of the top of the power shell.

[0007] As a further technical solution of the present invention, the second driving mechanism is composed of a second reducer, a second motor, a second transmission rod, a second connecting frame and a second connecting ring, and the input end of the second reducer is cooperatively connected to the output end of the second motor.

[0008] As a further technical solution of the present invention, the second motor is embedded in a groove opened on the top of the power shell.

[0009] As a further technical solution of the present invention, the self-cleaning component is composed of a transmission wheel, a transmission material plate, a support roller, a transmission motor, a support frame, a top pressure cylinder and a scraping support plate. The transmission material plate is rollingly connected to the support roller, the support roller is rotatably connected to the power shell, the transmission wheel is fixedly sleeved on the output end of the transmission motor, and the transmission motor is embedded in a groove symmetrically opened in the power shell.

[0010] As a further technical solution of the present invention, a sliding bracket is provided on one side of the power shell, and the sliding bracket is located below the supporting frame, and a cleaning frame is slidably connected to the sliding bracket.

[0011] As a further technical solution of the present invention, a feed cover is provided at the top of the mixing shell, and a discharge hopper is provided at the bottom of the mixing shell, a regulating valve is provided in the discharge hopper, and an observation window is embedded and installed in the grooves evenly opened on the side wall of the mixing shell.

[0012] The modified ammonium perchlorate preparation device provided by the present invention has the advantages that: a first transmission rod, a first connecting frame and a first connecting ring which are rotatably connected to each other constitute a universal shaft structure at one end of a mixing shell, and a second transmission rod, a second connecting frame and a second connecting ring constitute a universal shaft structure at the other end of the mixing shell; the second reducer and the first reducer can drive the mixing shell to reciprocate in a three-dimensional space under the drive of a second motor and a first motor, so that the coating agent is evenly coated on the ammonium perchlorate, thereby ensuring the coating effect of the processed ammonium perchlorate; the transmission material plate is supported by a supporting roller, so that the transmission material plate becomes a reciprocating material discharge platform at the bottom of the mixing shell; after the material is discharged, the transmission material plate on the transmission wheel is driven to operate by a transmission motor, and at the same time, a pressure cylinder drives a cleaning support plate to move up, and the cleaning support plate is pressed against the bottom of the transmission material plate, so that the product stuck to the transmission material plate is automatically scraped, thereby ensuring the safe production; and no manual participation in the cleaning process is required, thereby reducing the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a top view schematic diagram of the present invention;

[0016] Figure 3 It is a schematic diagram of the main structure of the present invention.

[0017] In the figure: 1. power shell; 2. first driving mechanism; 3. mixing shell; 4. second driving mechanism; 5. discharging rack; 6. self-cleaning component; 7. sliding bracket; 8. cleaning frame; 9. feed cover; 10. discharging hopper; 11. observation window; 21. first reducer; 22. first motor; 23. first transmission rod; 24. first connecting frame; 25. first connecting ring; 41. second reducer; 42. second motor; 43. second transmission rod; 44. second connecting frame; 45. second connecting ring; 61. transmission wheel; 62. transmission plate; 63. support roller; 64. transmission motor; 65. support rack; 66. top pressure cylinder; 67. scraping support plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Please see attached Figure 1 -Attached Figure 3 , an embodiment of the present invention: a modified ammonium perchlorate preparation device, comprising a power shell 1, a first drive mechanism 2, a mixing shell 3, a second drive mechanism 4, a discharging frame 5, a self-cleaning component 6, a sliding bracket 7, a cleaning frame 8, a feed cover 9, a discharging hopper 10 and an observation window 11, the first reducer 21 in the first drive mechanism 2 and the second reducer 41 in the second drive mechanism 4 are respectively embedded on both sides of the inner side of the power shell 1, the output end of the first reducer 21 is fixedly connected to the first transmission rod 23, one end of the first transmission rod 23 is rotatably connected to the first connecting frame 24, and the first connecting A first connecting ring 25 is rotatably connected in the frame 24, and the first connecting ring 25 is fixedly sleeved on one end of the mixing shell 3. A second connecting ring 45 is fixedly sleeved on the other end of the mixing shell 3. A second connecting ring 44 is rotatably connected to the second connecting ring 45, and a second transmission rod 43 is rotatably connected to the second connecting frame 44, and the second transmission rod 43 is cooperatively connected to the output end of the second reducer 41; a discharging rack 5 is provided at the bottom of one side of the power shell 1, and a transmission wheel 61 in the self-cleaning component 6 is slidably connected in the arc grooves symmetrically opened on both sides of the discharging rack 5, and a transmission material plate 62 is cooperatively wrapped around the transmission wheel 61.

[0021] A support frame 65 is symmetrically arranged at the bottom of one side of the power shell 1, and the support frame 65 is located below the transmission material plate 62. A top pressure cylinder 66 is fixedly sleeved in a through groove evenly provided on the support frame 65, and a cleaning support plate 67 is fixedly connected to the output end of the top pressure cylinder 66; the first driving mechanism 2 is composed of a first reducer 21, a first motor 22, a first transmission rod 23, a first connecting frame 24 and a first connecting ring 25. The first reducer 21 is connected to the output end of the first motor 22, and the first motor 22 is embedded in a groove starting from one side of the top of the power shell 1; the second driving mechanism 4 is composed of a second reducer 41, a second motor 42, a second transmission rod 23, a first connecting frame 24 and a first connecting ring 25. The self-cleaning assembly 6 is composed of a moving rod 43, a second connecting frame 44 and a second connecting ring 45. The input end of the second reducer 41 is matched and connected to the output end of the second motor 42; the second motor 42 is embedded in a groove opened on the top of the power shell 1; the self-cleaning assembly 6 is composed of a transmission wheel 61, a transmission plate 62, a support roller 63, a transmission motor 64, a support frame 65, a top pressure cylinder 66 and a scraping support plate 67. The transmission plate 62 is internally connected to the support roller 63 in a rolling manner, and the support roller 63 is rotatably connected to the power shell 1. The transmission wheel 61 is fixedly sleeved on the output end of the transmission motor 64, and the transmission motor 64 is embedded in the notch symmetrically opened in the power shell 1.

[0022] A sliding bracket 7 is provided on one side of the power shell 1, and the sliding bracket 7 is located below the support frame 65, and a cleaning frame 8 is slidably connected in the sliding bracket 7; a feed cover 9 is provided at the top of the mixing shell 3, and a discharge hopper 10 is provided at the bottom of the mixing shell 3, and a regulating valve is provided in the discharge hopper 10, and an observation window 11 is embedded and installed in the grooves uniformly opened on the side wall of the mixing shell 3, and the observation window 11 is provided to facilitate observation of the mixing condition inside the mixing shell 3;

[0023] Specifically, before operating the equipment, first preliminarily mix part of the ammonium perchlorate and the coating agent according to the requirement of the feeding ratio of ammonium perchlorate (kg) to tricalcium phosphate (g) = 1: (1.5 to 2.5), then gradually add the mixture into the mixing shell 3 from the feeding port, tighten the feeding cover 9, turn on the second motor 42 and the first motor 22 of the equipment, and when in use, the first transmission rod 23, the first connecting frame 24 and the first connecting ring 25 connected to each other in rotation form a universal shaft structure at one end of the mixing shell 3, and the second transmission rod 43, the second connecting frame 44 and the second connecting ring 45 form a universal shaft structure at the other end of the mixing shell 3. The second reducer 41 and the first reducer 21, driven by the second motor 42 and the first motor 22, can drive the mixing shell 3 to reciprocate in three-dimensional space. Movement makes the coating agent evenly coated on the ammonium perchlorate, ensuring the coating effect of the processed ammonium perchlorate; the equipment speed is adjusted to 40-50 rpm, and after running for 15-25 minutes, it stops running, discharges the material from the discharge hopper 10, and puts it into barrels for packaging; the transmission material plate 62 is supported by the support roller 63, so that the transmission material plate 62 becomes a reciprocating discharge platform at the bottom of the mixing shell 3. After the material is unloaded, the transmission material plate 62 on the transmission wheel 61 is driven to operate by the transmission motor 64, and at the same time, the pressure cylinder 66 drives the cleaning support plate 67 to move up, and the cleaning support plate 67 is pressed against the bottom of the transmission material plate 62, and the products stuck to the transmission material plate 62 are automatically scraped, thereby ensuring the safe production. At the same time, there is no need for manual participation in the cleaning process, which reduces the labor intensity of the staff.

[0024] Also disclosed is a method for producing modified ammonium perchlorate using the equipment.

[0025] The main quality requirements of the modified ammonium perchlorate of the present invention are as follows:

[0026]

[0027]

[0028] The quality index requirements of the main raw material tricalcium phosphate in the present invention are:

[0029] Serial number name Index requirements 1 Mass fraction of tricalcium phosphate, % 34.0-40.0 2 Arsenic (As) mass fraction, %≤ 0.0003 3 Fluorine (F) mass fraction, % ≤ 0.0075 4 pH 5.0-6.0 5 Mass fraction of heavy metal (loss on ignition as Pb) ≤ 0.002 6 Loss on ignition, ≤ 10.0 7 Clarity Slightly turbid

[0030] Main process: utilize recrystallization granulation technology to produce wet ammonium perchlorate (surface water ≤ 3%) that meets the particle size requirements, send it to the drying system (drying temperature 120-140°C) for drying, dry surface water ≤ 0.08% (if it does not meet the requirements, it needs to continue to be sent to a 30-60°C insulation room to remove surface water), cool to room temperature in an environment with a humidity below 40%, and then coat it with tricalcium phosphate in a coating machine with a coating humidity of 40-60%, and package it into a finished product after coating.

[0031] Taking each batch of 40kg modified ammonium perchlorate preparation process as an example to illustrate the main coating process of the present invention:

[0032] This process uses a three-dimensional mixing coating machine, which is explosion-proof. The coating machine has a batch size of 40kg per batch. The coating machine speed is adjustable and the process requires 40-50 rpm. The feed ratio of ammonium perchlorate (kg) to tricalcium phosphate (g) is 1: (1.5 to 2.5). First, the tricalcium phosphate coating agent is premixed in part of the dry ammonium perchlorate, and then the mixed ammonium perchlorate is added from the coating machine inlet. The coating time is 15-25 minutes and the coating temperature is room temperature. After the equipment stops running, the modified ammonium perchlorate is barreled from the outlet as the finished product.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modified ammonium perchlorate preparation device, comprising a power shell (1), a first drive mechanism (2), a mixing shell (3), a second drive mechanism (4), a discharging frame (5), a self-cleaning component (6), a sliding bracket (7), a cleaning frame (8), a feed cover (9), a discharging hopper (10) and an observation window (11), characterized in that: The first reducer (21) in the first driving mechanism (2) and the second reducer (41) in the second driving mechanism (4) are respectively embedded and installed on both sides of the interior of the power shell (1); the output end of the first reducer (21) is fixedly connected to the first transmission rod (23); one end of the first transmission rod (23) is rotatably connected to the first connection frame (24); and the first connection frame (24) is rotatably connected to the first connection ring (25); the first connection ring (25) is fixedly sleeved on one end of the mixing shell (3); the other end of the mixing shell (3) is fixedly sleeved on the second connection ring (45); the second connection ring (45) is rotatably connected to the second connection frame (44); the second connection frame (44) is rotatably connected to the first connection ring (25); A second transmission rod (43) is connected, and the second transmission rod (43) is connected to the output end of the second reducer (41); a discharging rack (5) is arranged at the bottom of one side of the power housing (1), and a transmission wheel (61) in the self-cleaning component (6) is slidably connected in arc grooves symmetrically opened on both sides of the discharging rack (5), and a transmission material plate (62) is wound around the transmission wheel (61); a support frame (65) is symmetrically arranged at the bottom of one side of the power housing (1), and the support frame (65) is located below the transmission material plate (62); a top pressure cylinder (66) is fixedly sleeved in a through groove evenly opened on the support frame (65), and a cleaning support plate (67) is fixedly connected to the output end of the top pressure cylinder (66).

2. A modified ammonium perchlorate preparation device according to claim 1, characterized in that: The first driving mechanism (2) is composed of a first reducer (21), a first motor (22), a first transmission rod (23), a first connection frame (24) and a first connection ring (25); the first reducer (21) is connected to the output end of the first motor (22), and the first motor (22) is embedded in a groove starting from one side of the top of the power housing (1).

3. A modified ammonium perchlorate preparation device according to claim 1, characterized in that: The second driving mechanism (4) is composed of a second reducer (41), a second motor (42), a second transmission rod (43), a second connecting frame (44) and a second connecting ring (45); the input end of the second reducer (41) is cooperatively connected to the output end of the second motor (42).

4. A modified ammonium perchlorate preparation device according to claim 3, characterized in that: The second motor (42) is embedded and installed in a groove opened on the top of the power housing (1).

5. A modified ammonium perchlorate preparation device according to claim 1, characterized in that: The self-cleaning component (6) is composed of a transmission wheel (61), a transmission material plate (62), a support roller (63), a transmission motor (64), a support frame (65), a top pressure cylinder (66) and a scraping support plate (67); the transmission material plate (62) is rollingly connected to the support roller (63); the support roller (63) is rotatably connected to the power shell (1); the transmission wheel (61) is fixedly sleeved on the output end of the transmission motor (64), and the transmission motor (64) is embedded and installed in a notch symmetrically opened in the power shell (1).

6. A modified ammonium perchlorate preparation device according to claim 1, characterized in that: A sliding bracket (7) is provided on one side of the power housing (1), and the sliding bracket (7) is located below the support frame (65), and a cleaning frame (8) is slidably connected to the sliding bracket (7).

7. A modified ammonium perchlorate preparation device according to claim 1, characterized in that: The top end of the mixing shell (3) is provided with a feed cover (9), and the bottom end of the mixing shell (3) is provided with a discharge hopper (10), a regulating valve is provided in the discharge hopper (10), and an observation window (11) is embedded and installed in a groove evenly provided on the side wall of the mixing shell (3).

8. A modified ammonium perchlorate, characterized in that: The invention comprises components with the following contents: ammonium perchlorate mass fraction ≥ 98.8%, chloride mass fraction ≤ 0.15%, chloric acid mass fraction ≤ 0.02%, water mass fraction (surface water) % ≤ 0.15%, total mass fraction of sodium and potassium ≤ 0.15%, 0.15% ≤ TCP ≤ 0.25%.

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