Ammonium perchlorate rapid crystallization device and method

Abstract

The application relates to the field of separation technology and discloses a rapid ammonium perchlorate crystallization device and method, which comprises an evaporation tank, a support column is fixedly installed at the top of the evaporation tank, a water absorption sponge is fixedly sleeved on the support column, and the water absorption sponge covers the whole top inner wall of the evaporation tank; a driving assembly for driving the water absorption sponge to be folded or unfolded in an umbrella shape is installed on the evaporation tank and takes the support column as a central shaft; a stirring shaft is installed in the evaporation tank; a wringing assembly is installed in the evaporation tank and is in transmission cooperation with the stirring shaft; a funnel-shaped water collecting groove is formed in the top end of the stirring shaft, and a water flow channel is formed in the stirring shaft; the water flow channel penetrates through the stirring shaft in the axial direction of the stirring shaft and is in communication with the water collecting groove. The water absorption sponge can completely cover the top inner wall of the evaporation tank, so that the condensation of steam on the top inner wall of the evaporation tank is effectively prevented, the phenomenon of secondary falling is avoided, the separation and crystallization efficiency is greatly improved, and the device is convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of separation technology, in particular to a rapid ammonium perchlorate crystallization device and method. BACKGROUND

[0002] Ammonium perchlorate is one of the most commonly used oxidizing agents in solid propellants, which is a white crystal with deliquescence, mainly used for making gunpowder, fireworks and analytical reagents, etc. The crystallization process of ammonium perchlorate mainly includes cooling crystallization, supercritical crystallization and evaporation crystallization, etc. Among them, evaporation crystallization is to heat and evaporate ammonium perchlorate solution under normal pressure or reduced pressure, so that the solution reaches supersaturation state, thereby precipitating ammonium perchlorate crystals.

[0003] The phosphatase refining and purifying device disclosed in the patent application with the publication number CN118987642A includes an evaporation tank, an electric resistance seat is sealingly arranged on the upper portion of the evaporation tank, a plurality of electric resistance tubes are arranged at the bottom of the electric resistance seat, the electric resistance tubes are located inside the evaporation tank, a partition plate is arranged between the evaporation tank and the electric resistance seat, the partition plate divides the inside of the evaporation tank into a water accumulation chamber and an evaporation chamber, the electric resistance tubes penetrate through the partition plate and form a seal between the electric resistance tubes and the partition plate, a plurality of water squeezing pipes are arranged on the partition plate, the bottom of each water squeezing pipe is in communication with the partition plate and the upper portion of each water squeezing pipe is in a closed structure, a sponge is arranged in each water squeezing pipe, the upper portion of the sponge is fixedly connected to the upper portion of the water squeezing pipe, a plurality of water squeezing holes are arranged on the water squeezing pipe in a circumferential direction, a steam discharge hole is arranged on the electric resistance seat, a driving mechanism is arranged in the steam discharge hole, an electric push rod is arranged on the upper side of the electric resistance seat, the electric push rod is connected to the driving mechanism, a squeezing mechanism is arranged on the electric resistance tube and is slidingly arranged on the driving mechanism, a through hole is arranged at the center of the partition plate, the driving mechanism penetrates through the through hole, the driving mechanism is fixed to the electric resistance tube through a fixing plate, an upper limiting mechanism is arranged at the bottom of the driving mechanism, a lower limiting mechanism is arranged in the evaporation chamber, a stirring mechanism is arranged between the upper limiting mechanism and the lower limiting mechanism, one end of the driving mechanism penetrates through the upper limiting mechanism, the stirring mechanism and the lower limiting mechanism.

[0004] Based on the above technical features, the problem is that in the prior art, multiple spaced sponges are used to absorb the water vapor separated by evaporation, which cannot completely cover the top inner wall of the evaporation tank, resulting in water droplets condensing on the uncovered top inner wall, and further causing a secondary falling phenomenon. Moreover, in the prior art, a whole piece of sponge cannot be used to cover the top inner wall of the evaporation tank because the sponge needs to be squeezed by the squeezing mechanism, so the overall separation and crystallization efficiency is not high and the use is not convenient.

[0005] Therefore, it is necessary to solve the above problems by using a rapid ammonium perchlorate crystallization device and method. SUMMARY

[0006] The purpose of the present application is to provide a rapid ammonium perchlorate crystallization device and method to solve the problems raised in the background art.

[0007] To achieve the above object, the application provides the following technical scheme: a high ammonium perchlorate rapid crystallization device, comprising an evaporation tank, a vertical support column is fixedly installed on the inner wall of the top of the evaporation tank, a water absorption sponge is fixedly sleeved on the support column, and the water absorption sponge covers the entire top inner wall of the evaporation tank;

[0008] A driving assembly is installed on the evaporation tank to drive the water absorption sponge to be folded or unfolded in an umbrella shape with the support column as the center axis;

[0009] A stirring shaft with stirring blades is installed in the evaporation tank, and the stirring shaft is coaxially opposite to the support column;

[0010] A wringing assembly is installed in the evaporation tank, the wringing assembly is used for wringing the water absorption sponge in the folded state, and the wringing assembly is in transmission cooperation with the stirring shaft;

[0011] A funnel-shaped water collecting groove is formed in the top end of the stirring shaft, and a water flow channel is formed in the stirring shaft; the water flow channel penetrates through the stirring shaft in the axial direction of the stirring shaft, and the water flow channel is in communication with the water collecting groove;

[0012] The bottom end of the stirring shaft penetrates out of the evaporation tank;

[0013] An activity plate is installed at the bottom of the evaporation tank, and the stirring shaft is rotatably installed on the activity plate; a first power member is installed at the bottom of the evaporation tank to drive the activity plate to move up and down, and a second power member is installed on the activity plate to drive the stirring shaft to rotate.

[0014] Preferably, the driving assembly comprises a pump body and a plurality of hoses; the pump body is fixedly installed at the top of the evaporation tank, a water flow groove is formed in the support column in the axial direction; a water tank is connected to the water suction port of the pump body, the water outlet of the pump body is in communication with the groove of the water flow groove; one end of each hose is closed, the other end of each hose is fixedly connected with the support column and is in communication with the water flow groove in the radial direction of the support column; the plurality of hoses are uniformly distributed in the circumferential direction of the support column, and each hose is arranged in the water absorption sponge.

[0015] Preferably, the wringing assembly comprises a first magnet block and a metal plate with water permeable holes; the metal plate is fixed in the water collecting groove at the top end of the stirring shaft; one first magnet block is fixedly arranged at the closed end of each hose, and each first magnet block is in magnetic attraction cooperation with the metal plate.

[0016] Preferably, a plurality of second magnet blocks are arranged in the edge of the water absorption sponge away from the support column, the plurality of second magnet blocks are uniformly distributed in the circumferential direction of the support column, and each second magnet block is in magnetic attraction cooperation with the metal plate.

[0017] Preferably, a first rubber layer is fixedly arranged on each first magnet block, and a second rubber layer is fixedly arranged on each second magnet block.

[0018] Preferably, the first power member comprises a hydraulic cylinder, the hydraulic cylinder is fixedly installed at the bottom of the evaporation tank, and the telescopic shaft of the hydraulic cylinder is vertically downward and fixedly connected with the movable plate.

[0019] Preferably, the second power member comprises a motor, the motor is fixedly installed on the movable plate, the bottom end of the stirring shaft is fixedly sleeved with an outer gear ring, a gear is fixedly sleeved on the output shaft of the motor, and the gear is in meshing cooperation with the outer gear ring.

[0020] Preferably, the evaporation tank is fixedly and communicatively provided with a feeding pipe and an exhaust pipe above the side, and is fixedly and communicatively provided with a discharging pipe at the bottom.

[0021] Preferably, a heating plate is fixedly installed in the tank body of the evaporation tank.

[0022] A rapid ammonium perchlorate crystallization method comprises the following steps: firstly, a driving assembly drives a water-absorbing sponge to be unfolded in an umbrella shape with the supporting column as the central axis; the water-absorbing sponge covers the top inner wall of the evaporation tank after being unfolded;

[0023] Then, the evaporation tank heats the ammonium perchlorate solution inside, and the water in the ammonium perchlorate solution is evaporated into water vapor; at this time, the ammonium perchlorate is separated from the water; at the same time, the water vapor rises and is absorbed by the water-absorbing sponge;

[0024] In the process of separating the ammonium perchlorate from the water, a second power member drives the stirring shaft to rotate, and the stirring shaft drives the stirring blade to stir the ammonium perchlorate solution;

[0025] When the ammonium perchlorate solution is completely evaporated and crystallized, the second power member is turned off; at the same time, the driving assembly drives the water-absorbing sponge to be folded in an umbrella shape with the supporting column as the central axis;

[0026] After the water-absorbing sponge is completely folded in an umbrella shape, a first power member is started and drives the movable plate to move upward; the movable plate drives the stirring shaft to rise and contact the water-absorbing sponge;

[0027] Then, the first power member is turned off and the second power member is started again, the second power member drives the stirring shaft to rotate; the stirring shaft drives a wringing assembly to wring the water-absorbing sponge;

[0028] When the water-absorbing sponge is wrung, the water inside is squeezed out; the squeezed-out water is collected in a water collecting groove at the top end of the stirring shaft; finally, the water in the water collecting groove flows out through a water flowing channel.

[0029] The technical effects and advantages of the present application: the water absorption sponge of the present application can completely cover the top inner wall of the evaporation tank, thereby effectively preventing condensation of steam on the top inner wall of the evaporation tank and avoiding the phenomenon of secondary falling, greatly improving the separation crystallization efficiency, and being convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is an internal schematic view of the evaporation tank of the present application;

[0031] Figure 2 It is an internal schematic view of the water absorption sponge of the present application;

[0032] Figure 3 It is a schematic view of the water absorption sponge of the present application;

[0033] Figure 4 It is a schematic view of the hose of the present application;

[0034] Figure 5 It is a schematic view of the first magnet block of the present application;

[0035] Figure 6 It is a schematic view of the second magnet block of the present application;

[0036] Figure 7 It is an internal schematic view of the stirring shaft of the present application;

[0037] Figure 8 It is a schematic view of the sealing mode of the stirring shaft and the bottom of the evaporation tank of the present application;

[0038] Figure 9 It is a schematic view of the metal plate of the present application;

[0039] Figure 10 It is a schematic view of the splicing of the water absorption sponge of the present application.

[0040] In the figure: 1, evaporation tank; 2, feed pipe; 3, discharge pipe; 4, exhaust pipe; 5, heating plate; 6, support column; 7, pump body; 8, water absorption sponge; 9, hose; 10, first magnet block; 11, first rubber layer; 12, second magnet block; 13, second rubber layer; 14, stirring shaft; 15, stirring blade; 16, metal plate; 17, water flow channel; 18, outer gear ring; 19, movable plate; 20, hydraulic cylinder; 21, motor; 22, gear; 23, drain pipe. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] The application provides a rapid crystallization device for ammonium perchlorate Figures 1 to 10 The rapid crystallization device for ammonium perchlorate is shown in the figure and comprises an evaporation tank 1. In this embodiment, the evaporation tank 1 is a vertically arranged circular tank. A cavity is formed in the tank body of the evaporation tank 1, and a heating plate 5 is fixedly installed in the cavity. The position and coverage range of the heating plate 5 are determined according to actual use and production requirements.

[0043] A discharge pipe 3 is fixedly arranged at the bottom of the evaporation tank 1, and the discharge pipe 3 is communicated with the evaporation tank 1. A control valve is installed in the discharge pipe 3 to control the opening and closing of the discharge pipe 3.

[0044] A feeding pipe 2 and an exhaust pipe 4 are fixedly arranged at the upper side of the evaporation tank 1, and the feeding pipe 2 and the exhaust pipe 4 are both communicated with the evaporation tank 1. Moreover, control valves are installed in the feeding pipe 2 and the exhaust pipe 4 to control the opening and closing of the feeding pipe 2 and the exhaust pipe 4.

[0045] A stirring shaft 14 is coaxially and vertically arranged in the evaporation tank 1, and stirring blades 15 are fixedly installed on the stirring shaft 14. The stirring blades 15 are used to stir the ammonium perchlorate solution during evaporation and crystallization, so as to accelerate the evaporation and crystallization rate.

[0046] A movable plate 19 that can move up and down is installed at the bottom of the evaporation tank 1. The movable plate 19 is a horizontal plate and is driven by a first power member that is fixedly installed at the bottom of the evaporation tank 1.

[0047] Specifically, the first power member comprises two hydraulic cylinders 20, and the extension shafts of the two hydraulic cylinders 20 are vertically downward. The cylinder bodies of the two hydraulic cylinders 20 are fixedly installed at the bottom of the evaporation tank 1. The movable plate 19 is fixedly connected with the extension shafts of the two hydraulic cylinders 20.

[0048] The stirring shaft 14 is located between the two hydraulic cylinders 20 and the bottom end thereof penetrates downward out of the evaporation tank 1. The bottom end of the stirring shaft 14 is rotationally connected with the movable plate 19. A second power member that drives the stirring shaft 14 to rotate is installed on the movable plate 19.

[0049] Specifically, the second power member comprises an electric motor 21 that is fixedly installed on the movable plate 19. The bottom end of the stirring shaft 14 is fixedly sleeved with an outer gear ring 18, and a gear 22 is fixedly sleeved on the output shaft of the electric motor 21. The gear 22 is in meshing cooperation with the outer gear ring 18.

[0050] A support column 6 is coaxially and fixedly arranged at the top of the evaporation tank 1. The support column 6 penetrates downward into the evaporation tank 1 and is coaxially and oppositely arranged with the stirring shaft 14.

[0051] A disc-shaped water absorption sponge 8 is fixedly sleeved on the support column 6, and the water absorption sponge 8 covers the entire top inner wall of the evaporation tank 1. A driving assembly that drives the water absorption sponge 8 to be umbrella-shaped folded or unfolded with the support column 6 as the center axis is installed on the evaporation tank 1.

[0052] Specifically, the driving assembly comprises the pump body 7 and a plurality of hoses 9. The pump body 7 is fixedly installed on the top of the evaporation tank 1, and a water flow groove is axially formed in the support column 6. The groove opening of the water flow groove is located at the top end of the support column 6 and vertically upward, the water inlet of the pump body 7 is connected with the water tank, and the water outlet of the pump body 7 is communicated with the groove opening of the water flow groove. In the embodiment, the pump body 7 is a pump capable of bidirectional liquid delivery, such as a symmetrical structure, a double-gear, and an external gear pump. In the embodiment, the fluid medium is water.

[0053] In order to ensure that the fluid medium in the hose 9 does not backflow, an electromagnetic control valve is installed at the communication position of the water outlet of the pump body 7 and the groove opening of the water flow groove to control the opening and closing.

[0054] One end of each hose 9 is closed, and the other end of each hose 9 is fixedly connected with the support column 6 and communicated with the water flow groove in the support column 6 in the radial direction of the support column 6.

[0055] The plurality of hoses 9 are uniformly distributed along the circumference of the support column 6, and each hose 9 is arranged in the water absorption sponge 8.

[0056] In the embodiment, the hose 9 can be selected from a hydraulic hose and the like as long as it can be straightened after being filled with high-pressure liquid and can be bent or collapsed in a natural state. In order to facilitate the water absorption sponge 8 to be easily rolled up and unfolded, the water absorption sponge 8 can be made of a plurality of fan-shaped sponges, and the plurality of fan-shaped sponges correspond to the plurality of hoses 9 one by one, and each hose 9 is arranged in the corresponding fan-shaped sponge. The connection mode of each hose 9 and the fan-shaped sponge, the connection mode of each fan-shaped sponge and the support column 6, and the connection mode between adjacent two fan-shaped sponges can be selected from mechanical connection, connection belt connection and the like according to actual use. The above all belong to the prior art, and will not be described in detail here.

[0057] A wringing assembly is installed in the evaporation tank 1, which is used to twist the water absorption sponge 8 in the rolled-up state, and the wringing assembly is in transmission cooperation with the stirring shaft 14.

[0058] Specifically, the wringing assembly comprises the first magnet block 10 and the metal plate 16. The metal plate 16 is fixedly installed on the top end of the stirring shaft 14. The closed end of each hose 9 is fixedly provided with a first magnet block 10, and each first magnet block 10 is in magnetic attraction cooperation with the metal plate 16.

[0059] The top end shaft diameter of the stirring shaft 14 matches the maximum circumferential radius formed by the bottom end edge of the water absorption sponge 8 in the rolled-up state. The top end of the stirring shaft 14 is in the shape of an inverted circular truncated cone.

[0060] A funnel-shaped water collecting groove is coaxially formed in the top end of the stirring shaft 14, and the groove opening of the water collecting groove faces upward. The metal plate 16 is fixedly installed in the water collecting groove, and the metal plate 16 is provided with water permeable holes for water flow.

[0061] The stirring shaft 14 is internally provided with a water flow channel 17 which is located below and communicated with the water collecting groove. The water flow channel 17 penetrates the stirring shaft 14 axially downward and extends to the movable plate 19. The bottom of the movable plate 19 is fixedly provided with a drain pipe 23 which is communicated with the water flow channel 17.

[0062] The inside of the water-absorbing sponge 8 is internally provided with a plurality of second magnet blocks 12 which are uniformly distributed at the edge of the water-absorbing sponge 8 away from the supporting column 6 along the circumference of the supporting column 6, and each second magnet block 12 is magnetically attracted to the metal plate 16.

[0063] In the embodiment, the first magnet blocks 10 and the second magnet blocks 12 are staggered along the circumference of the supporting column 6. That is, one second magnet block 12 is arranged between two adjacent first magnet blocks 10, and the distance between the adjacent first magnet block 10 and the second magnet block 12 is far enough after the water-absorbing sponge 8 is unfolded, so that the force between them is not enough to attract or repel.

[0064] Each first magnet block 10 is fixedly provided with a first rubber layer 11, and each second magnet block 12 is fixedly provided with a second rubber layer 13. The first rubber layer 11 and the second magnet block 12 are both used to increase the friction with the metal plate 16.

[0065] It should be pointed out that the sealing mode of the stirring shaft 14 and the bottom tank of the evaporation tank 1 includes two parts, i.e. sliding sealing and rotating sealing. Specifically, the stirring shaft 14 is sleeved with a rotating ring, and the stirring shaft 14 is both sealingly and slidingly matched with the rotating ring and is drivingly matched with the rotating ring; the rotating ring is rotatably matched with the bottom tank of the evaporation tank 1.

[0066] Among them, the sealing between the stirring shaft 14 and the rotating ring adopts sliding sealing. The driving mode between the stirring shaft 14 and the rotating ring adopts convex block and sliding groove abutting driving; that is, a sliding groove is axially formed on the inner wall of the rotating ring, and the sliding groove penetrates the rotating ring; a long strip-shaped convex block is fixedly arranged on the stirring shaft 14 in the axial direction, and the convex block penetrates the sliding groove and is sealingly and slidingly matched with the sliding groove; the sealing between the convex block and the sliding groove adopts sliding sealing. The sealing between the rotating ring and the bottom tank of the evaporation tank 1 adopts rotating sealing. Both the sliding sealing and the rotating sealing adopt existing sealing members.

[0067] A rapid crystallization method of ammonium perchlorate, which uses the rapid crystallization device of ammonium perchlorate described above. It includes the following steps: first, open the control valve in the feeding pipe 2 to open the feeding pipe 2, close the control valve in the exhaust pipe 4 to close the exhaust pipe 4, and close the control valve in the discharge pipe 3 to close the discharge pipe 3. Then, add ammonium perchlorate solution into the evaporation tank 1 through the feeding pipe 2; after the addition is completed, close the control valve in the feeding pipe 2.

[0068] Afterwards, the pump 7 is started and water is injected into all the hoses 9 through the water channel in the support column 6. After each hose 9 is filled with water, it is straightened and all the hoses 9, with the support column 6 as the center axis, are spread out like an umbrella and become a disc. Then, the electromagnetic control valve closes the water outlet of the pump 7 and the slot of the water channel, and the water-absorbing sponge 8 covers the entire top inner wall of the evaporation tank 1.

[0069] At the same time, the pump 7 is turned off, the control valve in the exhaust pipe 4 is opened, and the heating plate 5 heats the ammonium perchlorate solution inside the evaporation tank 1. After that, the water in the ammonium perchlorate solution evaporates into water vapor, and the ammonium perchlorate is separated from the water. Some of the water vapor rises and is discharged from the exhaust pipe 4, and the other part is absorbed by the water-absorbing sponge 8.

[0070] During the separation of ammonium perchlorate and water, the motor 21 is started, and the output shaft of the motor 21 drives the gear 22 to rotate. The gear 22 drives the outer ring gear 18 to rotate, and the outer ring gear 18 drives the stirring shaft 14 to rotate. The stirring shaft 14 drives the stirring blades 15 to stir the ammonium perchlorate solution. Thus, the evaporation rate is accelerated.

[0071] When the ammonium perchlorate solution is completely evaporated and crystallized, the motor 21 is turned off. Then, the control valve in the discharge pipe 3 is opened, and the solution containing ammonium perchlorate crystals flows out of the discharge pipe 3 and is subjected to subsequent separation treatment. After that, the electromagnetic control valve opens the water outlet of the pump 7 and the slot of the water channel. Then, the pump 7 is started, and the pump 7 pumps out the water in all the hoses 9 through the water channel in the support column 6. When the water in the hoses 9 decreases, the straightening force on the hoses 9 decreases. When the straightening force on all the hoses 9 is less than the total gravity they bear, all the hoses 9 bend or collapse. At this time, the water-absorbing sponge 8 is folded like an umbrella with the support column 6 as the center axis.

[0072] After the water-absorbing sponge 8 is completely folded like an umbrella, the pump 7 is turned off and the two hydraulic cylinders 20 are started. The retractable shafts of the two hydraulic cylinders 20 are retracted upward and drive the movable plate 19 to move upward, and the movable plate 19 drives the stirring shaft 14 to slide upward. The stirring shaft 14 drives the metal plate 16 to move upward and finally contacts all the first rubber layers 11 and all the second rubber layers 13. At this time, all the first magnet blocks 10 and all the second magnet blocks 12 are attracted to the metal plate 16, and all the first rubber layers 11 and all the second rubber layers 13 are in contact with the metal plate 16. At the same time, the two hydraulic cylinders 20 are turned off and the motor 21 is started again.

[0073] Then, the output shaft of the motor 21 drives the stirring shaft 14 to rotate slowly through the gear 22 and the outer ring gear 18. The stirring shaft 14 drives the metal plate 16 to rotate several rounds. At this time, since all the first magnet blocks 10 and all the second magnet blocks 12 are attracted to the metal plate 16 and all the first rubber layers 11 and all the second rubber layers 13 are in contact with the metal plate 16, the metal plate 16 first forms static friction with all the first rubber layers 11 and all the second rubber layers 13, and pushes all the first rubber layers 11 and all the second rubber layers 13 to revolve around the central axis of the stirring shaft 14 by a certain radian through the static friction force. In this process, all the first rubber layers 11 and all the second rubber layers 13 drive the corresponding first magnet blocks 10 and the corresponding second magnet blocks 12 to revolve around the central axis of the stirring shaft 14 by a certain radian, and all the first magnet blocks 10 drive the corresponding soft tubes 9 to twist the water-absorbing sponges 8, which are squeezed out and dripped or flowed onto the metal plate 16 under the action of gravity.

[0074] The water dripped or flowed onto the metal plate 16 converges in the water collecting groove on the stirring shaft 14 through the water-permeable holes, and is finally discharged in turn through the water flowing channel 17 and the drain pipe 23.

[0075] After the water-absorbing sponges 8 are twisted dry, the motor 21 is turned off and the two hydraulic cylinders 20 are started again, and the telescopic shafts of the two hydraulic cylinders 20 are extended downward and push the movable plate 19 to move downward. The movable plate 19 drives the stirring shaft 14 to slide downward, and the stirring shaft 14 drives the metal plate 16 to separate from the first rubber layer 11 and the second rubber layer 13. When the metal plate 16 moves to a distance far enough from all the first magnet blocks 10 and all the second magnet blocks 12, the magnetic attraction force of all the first magnet blocks 10 and all the second magnet blocks 12 to the metal plate 16 is small enough and will not affect the subsequent movement of all the first magnet blocks 10 and all the second magnet blocks 12, the two hydraulic cylinders 20 can be turned off.

[0076] It should be noted that in the process of twisting the water-absorbing sponges 8, the adjacent first magnet blocks 10 and second magnet blocks 12 repel each other to prevent the last water-absorbing sponge 8 from being twisted in one piece and being unable to separate.

[0077] Finally, it should be pointed out that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application 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 replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A device for rapid crystallization of ammonium perchlorate, comprising an evaporation tank (1), characterized in that: The vertical support column (6) is fixedly installed on the inner wall of the top of the evaporation tank (1), a water-absorbing sponge (8) is fixedly sleeved on the support column (6), and the water-absorbing sponge (8) covers the entire top inner wall of the evaporation tank (1); A driving assembly is installed on the evaporation tank (1) to drive the water-absorbing sponge (8) to be folded or unfolded in an umbrella shape with the support column (6) as the center axis; A stirring shaft (14) with stirring blades (15) is installed in the evaporation tank (1), and the stirring shaft (14) is coaxially opposite to the support column (6); A wringing assembly is installed in the evaporation tank (1), the wringing assembly is used for wringing the water-absorbing sponge (8) in the folded state, and the wringing assembly is in transmission cooperation with the stirring shaft (14); The wringing assembly comprises a first magnet block (10) and a metal plate (16) with water-permeable holes, the metal plate (16) is fixed in a water collecting groove at the top end of the stirring shaft (14), one first magnet block (10) is fixedly arranged at the closed end of each hose (9), and each first magnet block (10) is in magnetic attraction cooperation with the metal plate (16). Second magnet blocks (12) are arranged in the edge of the water-absorbing sponge (8) away from the support column (6), the second magnet blocks (12) are uniformly distributed along the circumference of the support column (6), and each second magnet block (12) is in magnetic attraction cooperation with the metal plate (16). A funnel-shaped water collecting groove is formed in the top end of the stirring shaft (14), and a water flow channel (17) is formed in the stirring shaft (14); the water flow channel (17) penetrates the stirring shaft (14) in the axial direction of the stirring shaft (14) and is in communication with the water collecting groove; The bottom end of the stirring shaft (14) penetrates the evaporation tank (1); An activity plate (19) is installed at the bottom of the evaporation tank (1), the stirring shaft (14) is rotatably installed on the activity plate (19), a first power member is installed at the bottom of the evaporation tank (1) to drive the activity plate (19) to move up and down, and a second power member is installed on the activity plate (19) to drive the stirring shaft (14) to rotate.

2. The device for rapid crystallization of ammonium perchlorate according to claim 1, characterized in that: The driving assembly comprises a pump body (7) and a plurality of hoses (9); the pump body (7) is fixedly installed at the top of the evaporation tank (1), a water flow groove is formed in the support column (6) in the axial direction; the water inlet of the pump body (7) is connected with a water tank, the water outlet of the pump body (7) is in communication with the groove of the water flow groove; one end of each hose (9) is closed, the other end of each hose (9) is fixedly connected with the support column (6) and is in communication with the water flow groove in the radial direction of the support column (6); the plurality of hoses (9) are uniformly distributed along the circumference of the support column (6), and each hose (9) is arranged in the water-absorbing sponge (8).

3. The device for rapid crystallization of ammonium perchlorate according to claim 1, characterized in that: A first rubber layer (11) is fixedly arranged on each first magnet block (10), and a second rubber layer (13) is fixedly arranged on each second magnet block (12).

4. The device for rapid crystallization of ammonium perchlorate according to claim 1, characterized in that: The first power member comprises a hydraulic cylinder (20), the hydraulic cylinder (20) is fixedly installed at the bottom of the evaporation tank (1), and the telescopic shaft of the hydraulic cylinder (20) vertically downward and is fixedly connected with the activity plate (19).

5. The device for rapid crystallization of ammonium perchlorate according to claim 1, characterized in that: The second power component comprises a motor (21) fixedly installed on the movable plate (19); the bottom end of the stirring shaft (14) is fixedly sleeved with an outer gear ring (18), and a gear (22) is fixedly sleeved on the output shaft of the motor (21); the gear (22) is in meshing cooperation with the outer gear ring (18).

6. The device for rapid crystallization of ammonium perchlorate according to claim 1, characterized in that: The side of the evaporation tank (1) is fixedly and communicatively provided with a feeding pipe (2) and an exhaust pipe (4), and the bottom of the evaporation tank (1) is fixedly and communicatively provided with a discharging pipe (3).

7. The device for rapid crystallization of ammonium perchlorate according to claim 1, characterized in that: The evaporation tank (1) is fixedly installed with a heating plate (5) in the tank body.

8. A method for rapid crystallization of ammonium perchlorate, using the rapid crystallization device for ammonium perchlorate according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: firstly, the driving assembly drives the water-absorbing sponge (8) to expand in an umbrella shape with the support column (6) as the center axis; after the water-absorbing sponge (8) is expanded, the top inner wall of the evaporation tank (1) is covered; Then, the evaporation tank (1) heats the ammonium perchlorate solution in the inside, and the water in the ammonium perchlorate solution is evaporated into water vapor; at this time, the ammonium perchlorate is separated from the water; at the same time, the water vapor rises and is absorbed by the water-absorbing sponge (8); In the process of separating the ammonium perchlorate from the water, the second power component drives the stirring shaft (14) to rotate, and the stirring shaft (14) drives the stirring blade (15) to stir the ammonium perchlorate solution; When the evaporation and crystallization of the ammonium perchlorate solution are completed, the second power component is stopped; at the same time, the driving assembly drives the water-absorbing sponge (8) to fold in an umbrella shape with the support column (6) as the center axis; After the water-absorbing sponge (8) is completely folded in an umbrella shape, the first power component is started and drives the movable plate (19) to move upwards; the movable plate (19) drives the stirring shaft (14) to move upwards and contact the water-absorbing sponge (8); Then, the first power component is stopped and the second power component is started again, and the second power component drives the stirring shaft (14) to rotate; the stirring shaft (14) drives the wringing assembly to wring the water-absorbing sponge (8); When the water-absorbing sponge (8) is wrung, the water in the inside is squeezed out; the squeezed-out water is collected in the water collecting groove at the top end of the stirring shaft (14); finally, the water in the water collecting groove flows out through the water flowing channel (17).

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