Ammonium perchlorate drying system and drying method

Abstract

The present invention belongs to the field of drying technology and relates to a drying system and drying method for ammonium perchlorate. The drying system of the present invention includes a drying box, a hopper, and a drying assembly; a connecting frame is provided in the drying box, and the drying assembly includes two transmission rollers rotatably mounted on the connecting frame and a drying belt wound between the two transmission rollers; a discharge port is provided in the hopper, and the ammonium perchlorate in the hopper falls onto the drying belt through the discharge port; a driving assembly is installed in the drying box. As the feed rollers and the drying belt operate, the ammonium perchlorate falls evenly onto the drying belt, preventing ammonium perchlorate accumulation. As drying proceeds, ammonium perchlorate can be continuously added to the drying belt, which is beneficial to improving drying efficiency. The dried ammonium perchlorate automatically falls into a collection box. By vibrating the connecting frame along the length of the drying box and swinging around the connecting column, the ammonium perchlorate on the drying belt is turned over, which is beneficial to fully and comprehensively drying the ammonium perchlorate.

Description

Technical Field

[0001] The invention belongs to the technical field of drying and relates to an ammonium perchlorate drying system and a drying method. Background Art

[0002] Ammonium perchlorate, a strong oxidant, is widely used in aerospace and everyday life. To improve the purity and chemical stability of ammonium perchlorate and enhance its safety during storage and use, it needs to be dried. Currently, ammonium perchlorate is primarily dried in a dryer. During the drying process, ammonium perchlorate tends to accumulate, making it difficult to dry the material in the center of the pile, resulting in uneven drying. Furthermore, during the drying process, new material cannot be added for drying, leading to low drying efficiency.

[0003] In order to solve the above problems, the present invention provides an ammonium perchlorate drying system and a drying method. Summary of the Invention

[0004] In order to solve the problems existing in the background technology, the present invention provides an ammonium perchlorate drying system and a drying method.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: an ammonium perchlorate drying system includes a drying box, a hopper and a drying assembly; a connecting frame is provided in the drying box, and the drying assembly includes two drive rollers rotatably mounted on the connecting frame and a drying belt wound between the two drive rollers; a discharge port is provided in the hopper, and ammonium perchlorate in the hopper falls onto the drying belt through the discharge port; and a drive assembly is installed in the drying box to vibrate the connecting frame.

[0006] The driving assembly includes a reciprocating push rod fixedly installed in the drying box; a connecting column is fixedly connected to one end of the connecting frame; the connecting column is rotatably connected to the telescopic end of the reciprocating push rod; a fixed block is fixedly installed in the drying box, and a through hole adapted to the connecting column is provided on the fixed block; a guide groove is provided on the inner wall of the through hole, and the connecting column is fixedly connected to a protrusion slidably arranged in the guide groove; the guide groove is spiral-shaped; the protrusion slides along the guide groove, so that the connecting frame moves and rotates around the connecting column at the same time.

[0007] Furthermore, two drying components are provided in the drying box, and two discharge ports are provided on the hopper, which correspond one to one with the two drying belts, and the ammonium perchlorate in the hopper falls onto the corresponding drying belts through the discharge ports.

[0008] Furthermore, the drying component further comprises a hot air blower, which is mounted on the connecting frame and is located between two sides of the drying belt.

[0009] Furthermore, a collecting box is installed on the drying box, and the collecting box is located at one end of the drying belt away from the feeding port.

[0010] Furthermore, a feeding roller is rotatably installed at a position corresponding to the discharge port in the hopper.

[0011] Furthermore, a material guide plate is installed in the hopper.

[0012] Furthermore, an arc-shaped groove is provided on the inner wall of the drying box, a slider is provided in the arc-shaped groove for limited sliding, and the connecting frame is connected to the slider for limited sliding.

[0013] Furthermore, the rotation angle of the connecting frame is no more than 2 degrees.

[0014] The drying method of ammonium perchlorate in the present invention comprises the following steps:

[0015] S1, add ammonium perchlorate into the hopper;

[0016] S2, the ammonium perchlorate in the hopper falls onto the drying belt through the discharge port; the drying belt drives the ammonium perchlorate to move while drying the ammonium perchlorate;

[0017] S3, start the reciprocating push rod, which drives the connecting frame to move back and forth along the length direction of the drying box, causing the drying belt to vibrate along the length direction of the drying box and flip the ammonium perchlorate on the drying belt;

[0018] S4. Under the guidance of the guide groove, the connecting frame swings back and forth around the connecting column to further turn over the ammonium perchlorate on the drying belt.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] As the feed rollers and drying belts rotate, ammonium perchlorate falls evenly onto the drying belts, preventing accumulation. As drying progresses, ammonium perchlorate can be continuously added to the drying belts, improving drying efficiency. As the drying belts rotate, dried ammonium perchlorate automatically falls into a collection box, further improving drying efficiency. The two drying belts rotate in opposite directions, facilitating the drop of ammonium perchlorate from the drying belts and pulverizing any agglomerated ammonium perchlorate.

[0021] During the drying process of ammonium perchlorate on the drying belt, the connecting frame is vibrated along the length of the drying box and swung around the connecting column, so that the ammonium perchlorate on the drying belt is turned over, which is beneficial to fully and comprehensively drying the ammonium perchlorate and improving the drying efficiency and drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a cross-sectional view of the present invention;

[0024] Figure 3 In the present invention Figure 2 A magnified view of part A;

[0025] Figure 4 It is a cross-sectional view of the drying box in the present invention;

[0026] Figure 5 It is a structural diagram of the fixed block in the present invention;

[0027] Figure 6 In the present invention Figure 5 A magnified view of part B;

[0028] Figure 7 It is a structural diagram of the connection frame in the present invention;

[0029] Figure 8 This is a schematic structural diagram of the first drying zone and the second drying zone in the present invention;

[0030] Figure 9 It is a top view of the present invention (feed roller removed).

[0031] In the figure: 1. Drying box; 2. Hopper; 3. First motor; 4. Collecting box; 5. Feed roller; 6. Discharge port; 7. Connecting frame; 8. First transmission roller; 9. First drying belt; 10. Second transmission roller; 11. Second drying belt; 12. Reciprocating push rod; 13. Fixed block; 14. Bump; 15. Slider; 16. Hot air blower; 17. Arc groove; 18. Second motor; 19. Guide groove; 20. Connecting column; 21. Guide plate. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0033] like Figures 1-9 As shown, the technical solution adopted by the present invention is as follows: the ammonium perchlorate drying system includes a drying box 1, a hopper 2 and a drying component.

[0034] The hopper 2 is arranged above the drying box 1. Figure 2In the direction shown, hopper 2 is provided with a feed opening 6 at each end, communicating with drying box 1. Hopper 2 is rotatably mounted with feed rollers 5 corresponding to feed openings 6, and a first motor 3 is mounted on hopper 2 to drive feed rollers 5. After ammonium perchlorate is added to hopper 2, first motor 3 is activated, rotating feed rollers 5. These motors drive ammonium perchlorate from hopper 2 through feed openings 6 into drying box 1 for drying. A guide plate 21 is fixedly mounted within hopper 2, with the end of guide plate 21, near feed opening 6, tilted downward.

[0035] Two connecting frames 7 are installed in the drying box 1. Each connecting frame 7 is equipped with a drying component.

[0036] Each drying assembly includes a second motor 18, a hot air blower 16, two drive rollers, and a drying belt. The drive roller axes are perpendicular to the length of the drying box 1. The two drive rollers are a first drive roller 8 and a second drive roller 10, each rotatably mounted on a connecting frame 7. The drying belt is wound between the first and second drive rollers 8, 10. The second motor 18 is mounted on the connecting frame 7 and is in driving connection with the first drive roller 8.

[0037] The two drying belts correspond to the two discharge ports 6 one by one. The ammonium perchlorate in the hopper 2 falls onto the corresponding drying belts through the discharge ports 6. The drying belts drive the ammonium perchlorate to move while drying the ammonium perchlorate.

[0038] like Figure 9 As shown, the width of the discharge port 6 is smaller than the width of the drying belt.

[0039] The hot air blower 16 is installed on the connecting frame 7 and is located between the two sides of the drying belt. When the hot air blower 16 is started, the hot air blower 16 blows hot air toward the drying belt to dry the ammonium perchlorate on the drying belt.

[0040] The two drying belts move in opposite directions, that is, both drying belts drive the ammonium perchlorate toward the center of the drying box 1. The spacing between the ends of the two drying belts is appropriately set so that when the ammonium perchlorate falls through the gap between the two drying belts, it is squeezed and kneaded, thereby breaking up the agglomerated ammonium perchlorate.

[0041] The drying box 1 is provided with a driving assembly, which drives the connecting frame 7 to move back and forth along the length direction of the drying box 1 while swinging back and forth, thereby turning the ammonium perchlorate on the drying belt, which is beneficial for fully and evenly drying the ammonium perchlorate on the drying belt.

[0042] The drive assembly includes a reciprocating push rod 12. Figure 4 、 Figure 5As shown, fixed blocks 13 are fixedly installed at both ends of the drying box 1, and a perforation is provided on the fixed blocks 13. The ends of the two connecting frames 7 that are away from each other are fixedly connected with connecting columns 20 that are adapted to the perforations, and the connecting columns 20 are set in the corresponding perforations. The axis of the connecting column 20 is parallel to the length direction of the drying box 1. The reciprocating push rod 12 is fixedly installed on the drying box 1. The axis of the reciprocating push rod 12 is parallel to the length direction of the drying box 1. There are two reciprocating push rods 12, and the two reciprocating push rods 12 correspond one-to-one to the two connecting frames 7. The connecting column 20 is rotatably connected to the telescopic end of the corresponding reciprocating push rod 12.

[0043] A guide groove 19 is provided on the inner wall of the perforation. The guide groove 19 is spiral-shaped. The connecting column 20 is fixedly connected with the protrusion 14, and the protrusion 14 is slidably arranged in the guide groove 19.

[0044] When reciprocating push rod 12 is activated, it drives connecting frame 7 to reciprocate along the length of drying box 1, thereby vibrating the drying belt along the length of drying box 1 and causing the ammonium perchlorate on the drying belt to tumble. Simultaneously, protrusion 14 slides along guide slot 19. Guided by guide slot 19, connecting frame 7 reciprocates around connecting post 20, causing it to oscillate back and forth, i.e., oscillate around connecting post 20. This further tumbling of the ammonium perchlorate on the drying belt facilitates thorough drying of the ammonium perchlorate and improves drying efficiency.

[0045] It should be noted that the guide groove 19 should be reasonably designed to allow the connecting frame 7 to rotate at a suitable angle to prevent the ammonium perchlorate from sliding off the drying belt. In this embodiment, the angle at which the connecting frame 7 rotates around the connecting post 20 is less than 2 degrees.

[0046] A collection box 4 is provided in the middle of the drying box 1. The drying belt transports ammonium perchlorate to the middle of the drying box 1, and the ammonium perchlorate falls from one end of the drying belt into the collection box 4 for collection. The collection box 4 is slidably provided in the drying box 1, making it easy to install and remove the collection box 4.

[0047] In order to make the connection frame 7 more stable in the drying box 1, the two sides of the connection frame 7 away from the fixed block 13 are limitedly slidably connected with sliders 15. The inner wall of the drying box 1 is provided with an arc groove 17 at a position corresponding to the slider 15. The slider 15 is slidably arranged in the arc groove 17. Figure 4 As shown, when the connecting frame 7 moves left and right, that is, moves along the length of the drying box 1, the connecting frame 7 slides left and right along the slider 15. When the connecting frame 7 swings around the connecting column 20, the slider 15 slides in the arcuate groove 17. The arcuate groove 17 limits the slider 15 and prevents the connecting frame 7 from tilting toward one end.

[0048] Working principle: For the convenience of description, the two drying zones are named the first drying zone 9 and the second drying zone 11 respectively.

[0049] When in use, ammonium perchlorate is added to the hopper 2. The first motor 3 is started, and the first motor 3 drives the feed roller 5 to rotate. The feed roller 5 transports the ammonium perchlorate in the hopper 2 to the lower feed port 6, so that the ammonium perchlorate falls downward onto the drying belt. Figure 2 As shown, the ammonium perchlorate flowing out of the left end discharge port 6 falls to the left end of the first drying belt 9, and the ammonium perchlorate flowing out of the right end discharge port 6 falls to the right end of the second drying belt 11.

[0050] The hot air blower 16 is started, and the hot air blown out by the hot air blower 16 diffuses toward the outside of the drying belt, thereby drying the ammonium perchlorate on the drying belt.

[0051] The two second motors 18 are started, and the first drying belt 9 and the second drying belt 11 both move toward the middle of the drying box 1 .

[0052] At the same time, the reciprocating push rod 12 is started to make the reciprocating push rod 12 reciprocate and extend. Figure 2 As shown, the reciprocating push rod 12 drives the connecting frame 7 to move back and forth along the length direction of the drying box 1, so that the connecting frame 7 vibrates along the length direction of the drying box 1. The connecting frame 7 drives the drying belt to vibrate along the length direction of the drying box 1, thereby turning over the ammonium perchlorate on the drying belt, which is beneficial to fully drying the ammonium perchlorate and improving the drying efficiency and drying effect.

[0053] In this embodiment, Figure 4 In the direction shown, the two connecting frames 7 move to the left or to the right simultaneously, so that a suitable gap is maintained between the first drying belt 9 and the second drying belt 11.

[0054] When the connecting post 20 moves along the axis of the perforation, the protrusion 14 moves along the guide groove 19. Under the guidance of the guide groove 19, the connecting post 20 rotates simultaneously, thereby causing the connecting frame 7 to swing back and forth around the connecting post 20. The connecting frame 7 drives the drying belt to swing back and forth, further turning the ammonium perchlorate on the drying belt, which is conducive to sufficient drying of the ammonium perchlorate and helps to improve drying efficiency.

[0055] Since the width of the discharge port 6 is smaller than the width of the drying belt and the swing amplitude of the connecting frame 7 is small, the ammonium perchlorate on the drying belt will not fall into the gap between the drying belt and the connecting frame 7 .

[0056] As the first drying belt 9 and the second drying belt 11 move, the ammonium perchlorate gradually moves toward the middle of the drying box 1. When the ammonium perchlorate reaches the end where the first drying belt 9 and the second drying belt 11 are close to each other, the ammonium perchlorate falls from the gap between the first drying belt 9 and the second drying belt 11 and falls into the collection box 4. Since the first drying belt 9 and the second drying belt 11 move in opposite directions, the ammonium perchlorate is squeezed and kneaded by the first drying belt 9 and the second drying belt 11 as it falls from the gap between the first drying belt 9 and the second drying belt 11, and the agglomerated ammonium perchlorate is broken up.

[0057] In this way, as the feed roller 5 and the drying belt operate, ammonium perchlorate evenly falls onto the drying belt, preventing ammonium perchlorate from piling up and facilitating sufficient drying of the ammonium perchlorate. Furthermore, ammonium perchlorate can be continuously added to the drying belt as drying proceeds, thereby improving drying efficiency. As the drying belt operates, the dried ammonium perchlorate automatically falls into the collecting box 4, further improving drying efficiency. The two drying belts operate in opposite directions, facilitating the ammonium perchlorate to fall from the drying belt and allowing the agglomerated ammonium perchlorate to be rubbed and crushed.

[0058] In the process of drying the ammonium perchlorate on the drying belt, the connecting frame 7 is vibrated along the length direction of the drying box 1 and swung back and forth around the connecting column 20, so as to flip the ammonium perchlorate on the drying belt, which is beneficial to fully and comprehensively drying the ammonium perchlorate and improving the drying efficiency and drying effect.

[0059] The drying method of ammonium perchlorate in the present invention comprises the following steps:

[0060] S1. Add ammonium perchlorate into hopper 2.

[0061] S2. Under the action of the feeding roller 5, the ammonium perchlorate in the hopper 2 falls onto the drying belt through the discharge port 6; the drying belt drives the ammonium perchlorate to move while drying the ammonium perchlorate.

[0062] S3. Start the reciprocating push rod 12, which drives the connecting frame 7 to move back and forth along the length of the drying box 1, causing the drying belt to vibrate along the length of the drying box 1, thereby turning the ammonium perchlorate on the drying belt. This is beneficial for fully drying the ammonium perchlorate and improving the drying efficiency and drying effect.

[0063] S4. Under the guidance of the guide groove 19, the connecting frame 7 swings back and forth around the connecting column 20, further turning the ammonium perchlorate on the drying belt, thereby fully drying the ammonium perchlorate.

[0064] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Ammonium perchlorate drying system, characterized by: The invention comprises a drying box (1), a hopper (2) and a drying assembly; a connecting frame (7) is provided in the drying box (1); the drying assembly comprises two transmission rollers rotatably mounted on the connecting frame (7) and a drying belt wound between the two transmission rollers; a discharge port (6) is provided on the hopper (2); ammonium perchlorate in the hopper (2) falls onto the drying belt through the discharge port (6); a driving assembly for vibrating the connecting frame (7) is installed on the drying box (1); The driving assembly comprises a reciprocating push rod (12) fixedly mounted in the drying box (1); a connecting column (20) is fixedly connected to one end of the connecting frame (7); the connecting column (20) is rotatably connected to the telescopic end of the reciprocating push rod (12); a fixing block (13) is fixedly mounted in the drying box (1), and a through hole is formed on the fixing block (13) that is adapted to the connecting column (20); A guide groove (19) is provided on the inner wall of the perforation, and the connecting column (20) is fixedly connected to a protrusion (14) slidably arranged in the guide groove (19); the guide groove (19) is spiral-shaped; the protrusion (14) slides along the guide groove (19), so that the connecting frame (7) moves and rotates around the connecting column (20) at the same time; Two drying components are provided in the drying box (1), and two discharge ports (6) are provided on the hopper (2), and the two discharge ports (6) correspond to the two drying belts one by one, and the ammonium perchlorate in the hopper (2) falls onto the corresponding drying belts through the discharge ports (6); The drying assembly further comprises a hot air blower (16), wherein the hot air blower (16) is mounted on the connecting frame (7), and the hot air blower (16) is located between two sides of the drying belt; A collecting box (4) is installed on the drying box (1), and the collecting box (4) is located at one end of the drying belt away from the discharge port (6).

2. The ammonium perchlorate drying system according to claim 1, characterized in that: A feeding roller (5) is rotatably mounted in the hopper (2) at a position corresponding to the discharge opening (6).

3. The ammonium perchlorate drying system according to claim 2, characterized in that: A material guide plate (21) is installed in the hopper (2).

4. The ammonium perchlorate drying system according to claim 1, characterized in that: An arc-shaped groove (17) is provided on the inner wall of the drying box (1), a slider (15) is provided in the arc-shaped groove (17) for limited sliding, and the connecting frame (7) is connected to the slider (15) for limited sliding.

5. The ammonium perchlorate drying system according to claim 1, characterized in that: The angle of rotation of the connecting frame (7) is no greater than 2 degrees.

6. A method for drying ammonium perchlorate, using the ammonium perchlorate drying system according to claim 1, characterized in that: The following steps are involved: S1, adding ammonium perchlorate into the hopper (2); S2, the ammonium perchlorate in the hopper (2) falls onto the drying belt through the discharge port (6); the drying belt drives the ammonium perchlorate to move while drying the ammonium perchlorate; S3, starting the reciprocating push rod (12), the reciprocating push rod (12) drives the connecting frame (7) to move back and forth along the length direction of the drying box (1), so that the drying belt vibrates along the length direction of the drying box (1), and the ammonium perchlorate on the drying belt is turned over; S4. Under the guidance of the guide groove (19), the connecting frame (7) swings back and forth around the connecting column (20), further turning over the ammonium perchlorate on the drying belt.

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