An ammonium perchlorate crystal screening device

Abstract

The application discloses an ammonium perchlorate crystal screening device, and relates to the field of crystal screening devices, which comprises a screening material box used for storing ammonium perchlorate crystals, a wind box, a sieve and a collecting box arranged in sequence below the screening material box, and a discharging hole arranged at the bottom of the screening material box and used for discharging the ammonium perchlorate crystals. When air is discharged from the wind box, ammonium perchlorate powder mixed in the ammonium perchlorate crystals is blown from the sieve holes to the collecting box. The ammonium perchlorate powder in the ammonium perchlorate crystals is blown to the collecting box by using the blowing mode from top to bottom, the screening mode of vibration is avoided, the loss of the ammonium perchlorate crystals is reduced, the integrity of the ammonium perchlorate crystals is improved, and the increase of the ammonium perchlorate powder in the screening process is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of crystal screening device, in particular to an ammonium perchlorate crystal screening device. BACKGROUND

[0002] Ammonium perchlorate as a strong oxidant, it can be used for making explosives, fireworks, and used as analytical reagent, etc., in the production process of ammonium perchlorate, the ammonium perchlorate crystal obtained by centrifugal drying often needs to be screened, the existing ammonium perchlorate crystal screening equipment is usually screened by vibration, and in the process of vibration screening, multiple ammonium perchlorate crystals and the inner wall of the screening equipment are inevitably collided and worn, so that the surface of the ammonium perchlorate crystal is easily damaged to produce more ammonium perchlorate powder, and the ammonium perchlorate crystal body is easily damaged and becomes smaller, so it is difficult to ensure that the ammonium perchlorate crystal is not lost in the screening process.

[0003] Therefore, it is necessary to provide an ammonium perchlorate crystal screening device to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide an ammonium perchlorate crystal screening device to solve the problem that the existing ammonium perchlorate crystal screening equipment is usually screened by vibration, and in the process of vibration screening, multiple ammonium perchlorate crystals and the inner wall of the screening equipment are inevitably collided and worn, so that the surface of the ammonium perchlorate crystal is easily damaged to produce more ammonium perchlorate powder, and the ammonium perchlorate crystal body is easily damaged and becomes smaller, so it is difficult to ensure that the ammonium perchlorate crystal is not lost in the screening process.

[0005] To achieve the above purpose, the present application provides the following technical scheme: an ammonium perchlorate crystal screening device, comprising a screening material box for storing ammonium perchlorate crystals, a wind box, a sieve and a collection box are sequentially arranged below the screening material box, an outlet hole for the ammonium perchlorate crystals to leak out is arranged at the bottom of the screening material box, the sieve is used to contain the ammonium perchlorate crystals leaked out of the outlet hole, and a layer of ammonium perchlorate crystals is laid in the sieve, a sieve hole for the ammonium perchlorate powder mixed in the ammonium perchlorate crystals to leak out into the collection box is arranged at the bottom of the sieve, and the ammonium perchlorate powder mixed in the ammonium perchlorate crystals is blown from the sieve hole into the collection box from above the sieve when air is discharged from the wind box.

[0006] Preferably, a wind cavity is arranged in the inside of the wind box, a wind hole is arranged at the bottom of the wind box, the wind hole is in communication with the wind cavity, a plurality of wind holes are arranged, the plurality of wind holes are arranged in a rectangular array, a guide groove is arranged on the inner wall of the wind hole, and the guide groove is in a spiral shape.

[0007] Preferably, the inside of the screening material box is provided with a discharge mechanism for controlling the leakage of ammonium perchlorate crystals in the screening material box from the discharge hole, the discharge mechanism corresponds to the upper side of the discharge hole, the discharge mechanism is provided in multiple groups, the discharge hole is provided in multiple, the multiple discharge holes correspond to the multiple discharge mechanisms one by one, the discharge mechanism comprises a cylindrical sleeve, a feed hole, a spring and a magnetic plug, the cylindrical sleeve is fixedly welded in a cylindrical structure on the inside bottom surface of the screening material box, and the lower end of the cylindrical sleeve is communicated with the discharge hole, the upper end of the spring is fixedly welded on the inner wall of the upper end of the cylindrical sleeve, the lower end of the spring is fixedly welded on the upper surface of the magnetic plug, the magnetic plug is in a circular truncated cone structure and is slidably arranged in the cylindrical sleeve, the small end of the circular truncated cone structure faces the discharge hole, the feed hole is provided in a circular hole structure at the outer circle of the lower end of the cylindrical sleeve, and the feed hole is communicated inside and outside the cylindrical sleeve, the feed hole is provided in multiple, the multiple feed holes are distributed at equal angles along the outer circle of the lower end of the cylindrical sleeve, and the height of the multiple feed holes is lower than that of the magnetic plug and higher than that of the discharge hole.

[0008] Preferably, a magnetic table is fixedly arranged on the inner wall of the lower end of the screen, a slope for sliding flow of ammonium perchlorate powder mixed in the ammonium perchlorate crystals into the screen hole is arranged around the magnetic table, and the magnetic table and the magnetic plug repel each other and move away.

[0009] Preferably, the diameter of the ammonium perchlorate crystals is greater than the diameter of the screen hole.

[0010] Preferably, the front and rear of the screening material box are fixedly installed with main body supports, and the bottom of the main body support is supported on the bottom surface.

[0011] Preferably, a fixed frame is fixedly installed at the outer circle of the bellows, wheel frames are fixedly installed on the front and rear sides of the fixed frame, wheels are rotatably connected to the bottom of the wheel frame, an electric push rod is fixedly installed on the left side or the right side of the fixed frame, an electric push rod support rod is fixedly installed at the end of the electric push rod away from the fixed frame, and the bottom of the electric push rod support rod is fixed to the ground.

[0012] Preferably, upper connecting plates are fixedly installed at the front and rear side corners of the screen, and a cylinder is installed at the lower end of the upper connecting plate.

[0013] Preferably, a rubber cover is fixedly arranged on the outer periphery of the screen, and the rubber cover covers the outside of the collecting box.

[0014] Preferably, the circular truncated cone structure is further integrally provided with a cylindrical end at the end away from the discharge hole, the diameter of the cylindrical end is consistent with the inner diameter of the cylindrical sleeve, and the height of the cylindrical end is greater than the diameter of the feed hole.

[0015] Technical effects and advantages of the present application:

[0016] 1、The application is characterized in that the ammonium perchlorate powder mixed in the ammonium perchlorate crystals is blown from the sieve holes to the collecting box from above when the air outlet of the wind box, the ammonium perchlorate crystals are blown to the collecting box from top to bottom, the vibration screening method is avoided, the loss of the ammonium perchlorate crystals is reduced, the integrity of the ammonium perchlorate crystals is improved, and the increase of the ammonium perchlorate powder in the screening process is avoided.

[0017] 2、The ammonium perchlorate powder between the ammonium perchlorate crystals is fully blown into the sieve holes and then discharged into the collecting box.

[0018] 3、The wind force passing through the air hole is guided to blow spirally to the surface of the ammonium perchlorate crystals, so that the ammonium perchlorate crystals roll, the ammonium perchlorate powder mixed between the ammonium perchlorate crystals is better discharged from the sieve holes, and the rolling of the ammonium perchlorate crystals avoids the phenomenon that the ammonium perchlorate crystals block the sieve holes, so that the phenomenon that the ammonium perchlorate powder cannot leak out of the sieve holes is avoided.

[0019] 4、In order to increase the screening efficiency of the ammonium perchlorate crystals, the discharging mechanism for controlling the leakage of the ammonium perchlorate crystals from the discharge hole in the screening material box is arranged in the interior of the screening material box; when the magnetic block moves upward, the cylindrical end moves away from the one end of the cylindrical sleeve connected to the interior of the feeding hole, so that the ammonium perchlorate crystals stored in the screening material box can enter the interior of the cylindrical sleeve through the plurality of feeding holes, and then leak into the sieve from the discharge hole; when the sieve moves away from the screening material box, the repulsive force between the magnetic block and the magnetic table is weakened or disappears due to the mutual moving away of the magnetic block and the magnetic table, at this time, the compressed spring resets, the magnetic block is reset in the process of the spring resetting, so that the cylindrical end on the magnetic block blocks the position of the feeding hole connected to the interior of the cylindrical sleeve, at this time, the ammonium perchlorate crystals in the screening material box no longer leak from the discharge hole, the principle of magnetic control is used to realize the purpose that the sieve is close to and away from the screening material box once to complete the purpose of laying a layer of ammonium perchlorate crystals on the sieve, the feeding is facilitated, and the screening efficiency of the ammonium perchlorate crystals is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a first perspective structure diagram of the ammonium perchlorate crystal screening device.

[0021] Figure 2 It is a second perspective structure diagram of the ammonium perchlorate crystal screening device.

[0022] Figure 3 It is a third perspective structure diagram of the ammonium perchlorate crystal screening device.

[0023] Figure 4 The figure is a sectional view of the ammonium perchlorate crystal screening device of the present application.

[0024] Figure 5 The figure is a sectional view of the ammonium perchlorate crystal screening device of the present application. Figure 4 The figure is a sectional view of the ammonium perchlorate crystal screening device of the present application.

[0025] Figure 6 The figure is a sectional view of the ammonium perchlorate crystal screening device of the present application. Figure 4 The figure is a sectional view of the ammonium perchlorate crystal screening device of the present application.

[0026] In the figure: 1, material box for screening; 2, air box; 3, sieve; 4, collection box; 5, main support; 6, fixed frame; 7, electric push rod; 8, electric push rod support rod; 9, ammonium perchlorate crystal; 10, rubber cover; 11, upper connecting plate; 12, air cylinder; 13, wheel frame; 14, wheel; 15, discharging mechanism; 16, discharging hole; 17, air hole; 18, sieve hole; 19, cylindrical sleeve; 20, feeding hole; 21, spring; 22, magnetic block; 23, air cavity; 24, guide groove; 25, slope; 26, magnetic table. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying 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 the other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0028] The present application provides a method for preparing ammonium perchlorate crystal as Figures 1-6The application discloses an ammonium perchlorate crystal screening device, which comprises a screening material box 1 used for storing ammonium perchlorate crystals 9, a bellows 2 and a collecting box 4 arranged in sequence below the screening material box 1, and a sieve 3 arranged on the bottom of the screening material box 1, wherein the bottom of the screening material box 1 is provided with a discharging hole 16 for the ammonium perchlorate crystals 9, the sieve 3 is used for containing the ammonium perchlorate crystals 9 discharged from the discharging hole 16, the bottom of the sieve 3 is provided with sieve holes 18 for the ammonium perchlorate powder mixed in the ammonium perchlorate crystals 9 to be discharged into the collecting box 4, the diameter of the ammonium perchlorate crystals 9 is larger than that of the sieve holes 18, the air in the bellows 2 is blown from above the sieve 3 to blow the ammonium perchlorate powder mixed in the ammonium perchlorate crystals 9 from the sieve holes 18 into the collecting box 4, the ammonium perchlorate powder in the ammonium perchlorate crystals 9 is blown into the collecting box 4 from top to bottom, the loss of the ammonium perchlorate crystals 9 is reduced, the completeness of the ammonium perchlorate crystals 9 is improved, and the increase of the ammonium perchlorate powder in the screening process is avoided.

[0029] The wind cavity 23 is arranged in the interior of the bellows 2, the bottom of the bellows 2 is provided with wind holes 17 in communication with the wind cavity 23, the wind holes 17 are arranged in a rectangular array, the inner wall of the wind holes 17 is provided with guide grooves 24 in a spiral shape, a fan is arranged on the upper surface of the bellows 2, the output end of the fan is in communication with the interior of the wind cavity 23, the fan is started to send the wind power into the wind cavity 23, the wind power passing through the wind cavity 23 is blown to the surface of the ammonium perchlorate crystals 9 placed in the sieve 3 through the wind holes 17, the ammonium perchlorate powder between the ammonium perchlorate crystals 9 is fully blown into the sieve holes 18 and then discharged into the collecting box 4 based on the fact that the ammonium perchlorate crystals 9 are only laid in a layer on the surface of the sieve 3.

[0030] Further, the wind power passing through the wind holes 17 is spirally blown to the surface of the ammonium perchlorate crystals 9 based on the fact that the guide grooves 24 are in a spiral shape, so that the ammonium perchlorate crystals 9 roll, the ammonium perchlorate powder mixed between the ammonium perchlorate crystals 9 is better discharged from the sieve holes 18, and the ammonium perchlorate crystals 9 are prevented from blocking the sieve holes 18 based on the fact that the ammonium perchlorate crystals 9 roll, so that the ammonium perchlorate powder is prevented from being unable to be discharged from the sieve holes 18.

[0031] In order to increase the screening efficiency of ammonium perchlorate crystals 9, the inside of the screening material box 1 is provided with a discharge mechanism 15 for controlling the leakage of ammonium perchlorate crystals 9 in the screening material box 1 from the discharge hole 16. The discharge mechanism 15 corresponds to the top of the discharge hole 16. The discharge mechanism 15 is provided with multiple groups. The discharge hole 16 is provided with multiple. The multiple discharge holes 16 correspond one by one to the multiple groups of discharge mechanisms 15. The discharge mechanism 15 includes a cylindrical sleeve 19, a feed hole 20, a spring 21 and a magnetic plug 22. The cylindrical sleeve 19 is fixedly welded in a cylindrical structure on the inside bottom surface of the screening material box 1. The lower end of the cylindrical sleeve 19 is communicated with the discharge hole 16. The upper end of the spring 21 is fixedly welded on the inner wall of the upper end of the cylindrical sleeve 19. The lower end of the spring 21 is fixedly welded on the upper surface of the magnetic plug 22. The magnetic plug 22 is in the form of a circular truncated cone structure and is slidingly arranged in the cylindrical sleeve 19. The small end of the circular truncated cone structure faces the discharge hole 16. The feed hole 20 is in the form of a circular hole structure and is arranged at the lower end of the outer circle of the cylindrical sleeve 19. The feed hole 20 communicates the inside and outside of the cylindrical sleeve 19. The feed hole 20 is provided with multiple. The multiple feed holes 20 are equally angularly distributed along the lower end of the outer circle of the cylindrical sleeve 19. The height of the multiple feed holes 20 is lower than that of the magnetic plug 22 and higher than that of the discharge hole 16. When the screen 3 approaches the bottom of the screening material box 1, due to the close proximity of the magnetic plug 22 and the magnetic platform 26, a repulsive force is generated between the magnetic plug 22 and the magnetic platform 26, so that the magnetic plug 22 presses the spring 21 upwards. The end of the circular truncated cone structure away from the discharge hole 16 is also integrally provided with a cylindrical end. The diameter of the cylindrical end is consistent with the inner diameter of the cylindrical sleeve 19. The height of the cylindrical end is greater than the diameter of the feed hole 20. The lower end of the inner wall of the screen 3 is fixedly provided with a magnetic platform 26. The magnetic platform 26 and the magnetic plug 22 repel each other and move away from each other. When the magnetic plug 22 moves upwards, the cylindrical end moves away from the end of the feed hole 20 communicating with the inside of the cylindrical sleeve 19, so that the ammonium perchlorate crystals 9 stored in the screening material box 1 can enter the inside of the cylindrical sleeve 19 through the multiple feed holes 20, and then leak into the screen 3 from the discharge hole 16. When the screen 3 moves away from the screening material box 1, due to the mutual distance of the magnetic plug 22 and the magnetic platform 26, the repulsive force between the magnetic plug 22 and the magnetic platform 26 is weakened or disappears. At this time, the compressed spring 21 resets. The spring 21 resets the magnetic plug 22, so that the cylindrical end on the magnetic plug 22 blocks the position of the feed hole 20 communicating with the inside of the cylindrical sleeve 19. At this time, the ammonium perchlorate crystals 9 in the screening material box 1 no longer leak from the discharge hole 16. The principle of magnetic control is used to make the screen 3 approach and move away from the screening material box 1 once to complete the purpose of laying a layer of ammonium perchlorate crystals 9 on the screen 3, which is convenient for feeding and improves the screening efficiency of ammonium perchlorate crystals 9.

[0032] A slope 25 is arranged around the magnetic table 26 to facilitate the mixed ammonium perchlorate powder in the ammonium perchlorate crystals 9 to slide into the sieve holes 18 when falling onto the inner bottom surface of the sieve 3.

[0033] In order to move the bellows 2 away when the sieve 3 is close to or away from the screening material box 1, an electric push rod 7 is fixedly installed on the left side or right side of the fixed frame 6, and the end of the electric push rod 7 away from the fixed frame 6 is fixedly installed with an electric push rod support rod 8, the bottom of the electric push rod support rod 8 is fixed to the ground, and when the electric push rod 7 is started, it can push the bellows 2 to move, so that the bellows 2 is moved away from the bottom of the screening material box 1.

[0034] It should be noted that the electric push rod 7 can be installed on either the left side or the right side of the fixed frame 6, which can push the bellows 2 to move along the length direction of the screening material box 1, and the bellows 2 can be moved away from the bottom of the screening material box 1, the main support 5 is arranged in the length direction of the screening material box 1 (i.e. the main support 5 is installed on the front and back of the screening material box 1), and the main support 5 is supported on the ground. The main support 5 is used to support the screening material box 1, and the arrangement of the main support 5 does not affect the movement of the bellows 2.

[0035] In order to increase the stability of the bellows 2 during movement, a fixed frame 6 is fixedly installed at the outer circle of the bellows 2, and wheel frames 13 are fixedly installed on the front and back sides of the fixed frame 6, and wheels 14 are rotatably connected to the bottom of the wheel frames 13. When the bellows 2 moves, the wheels 14 at the bottom of the bellows 2 roll on the ground, thereby increasing the stability of the bellows 2 during movement.

[0036] Upper connecting plates 11 are fixedly installed at the front and back side corners of the sieve 3, and cylinders 12 are installed at the lower ends of the upper connecting plates 11, and the bottoms of the cylinders 12 are fixed to the ground. When the cylinders 12 are started, they can push the upper connecting plates 11 to rise and fall, and the upper connecting plates 11 can drive the sieve 3 to rise and fall, so that the sieve 3 is away from or close to the bottom of the screening material box 1.

[0037] In order to avoid the ammonium perchlorate powder in the collecting box 4 from flying, a rubber cover 10 is fixedly arranged on the outer periphery of the sieve 3, the rubber cover 10 covers the outside of the collecting box 4, and the rubber cover 10 can prevent the ammonium perchlorate powder in the collecting box 4 from flying.

Claims

1. An ammonium perchlorate crystal screening apparatus comprising a screening bin (1) for storing ammonium perchlorate crystals (9), characterized in that: The lower part of the screening material box (1) is provided with an outlet hole (16) for leaking ammonium perchlorate crystals (9), the screen (3) is used to contain ammonium perchlorate crystals (9) leaked from the outlet hole (16), and the screen (3) is provided with a sieve hole (18) for leaking ammonium perchlorate powder mixed in the ammonium perchlorate crystals (9) into the collection box (4), the wind box (2) blows the ammonium perchlorate powder mixed in the ammonium perchlorate crystals (9) from the sieve hole (18) into the collection box (4) from above the screen (3) when air is discharged; the inside of the wind box (2) is provided with a wind cavity (23), the bottom of the wind box (2) is provided with a wind hole (17), the wind hole (17) communicates with the wind cavity (23), the wind hole (17) is provided with a plurality of wind holes (17), the plurality of wind holes (17) are arranged in a rectangular array, the inner wall of the wind hole (17) is provided with a guide groove (24), and the guide groove (24) is in a spiral shape; the inside of the screening material box (1) is provided with a discharging mechanism (15) for controlling the leakage of ammonium perchlorate crystals (9) in the screening material box (1) from the outlet hole (16), the discharging mechanism (15) corresponds to the upper part of the outlet hole (16), the discharging mechanism (15) is provided with a plurality of groups, the outlet hole (16) is provided with a plurality of outlet holes (16), and the plurality of outlet holes (16) correspond to the plurality of groups of discharging mechanisms (15) one by one, the discharging mechanism (15) comprises a cylindrical sleeve (19), an inlet hole (20), a spring (21) and a magnetic plug (22), the cylindrical sleeve (19) is fixedly welded to the inner bottom surface of the screening material box (1) in a cylindrical structure, and the lower end of the cylindrical sleeve (19) communicates with the outlet hole (16), the upper end of the spring (21) is fixedly welded to the inner wall of the upper end of the cylindrical sleeve (19), the lower end of the spring (21) is fixedly welded to the upper surface of the magnetic plug (22), the magnetic plug (22) is in a circular truncated cone structure and is slidably arranged in the cylindrical sleeve (19), the small end of the circular truncated cone structure faces the outlet hole (16), the inlet hole (20) is arranged at the lower end outer circle of the cylindrical sleeve (19) in a circular hole structure, and the inlet hole (20) communicates the inside and outside of the cylindrical sleeve (19), the inlet hole (20) is provided with a plurality of inlet holes (20), the plurality of inlet holes (20) are distributed at equal angles along the lower end outer circle of the cylindrical sleeve (19), and the heights of the plurality of inlet holes (20) are lower than the magnetic plug (22) and higher than the outlet hole (16); the lower end inner wall of the screen (3) is fixedly provided with a magnetic table (26), the periphery of the magnetic table (26) is provided with a slope (25) for sliding flow of ammonium perchlorate powder mixed in the ammonium perchlorate crystals (9) into the sieve hole (18), and the magnetic table (26) repels the magnetic plug (22) away.The circular truncated cone structure is further integrally provided with a cylindrical end away from one end of the discharge hole (16), the diameter of the cylindrical end is consistent with the inner diameter of the cylindrical sleeve (19), and the height of the cylindrical end is greater than the diameter of the feeding hole (20).

2. The ammonium perchlorate crystal screening apparatus of claim 1, wherein: The diameter of the ammonium perchlorate crystal (9) is greater than the diameter of the sieve hole (18).

3. The ammonium perchlorate crystal screening apparatus of claim 1, wherein: The front and rear of the screening material box (1) are fixedly provided with main body supports (5), and the bottom of the main body supports (5) is supported on the bottom surface.

4. An ammonium perchlorate crystal screening apparatus according to claim 3, wherein: The outer ring of the bellows (2) is fixedly provided with a fixed frame (6), the front and rear sides of the fixed frame (6) are fixedly provided with wheel frames (13), the bottom of the wheel frame (13) is rotatably connected with a wheel (14), the left side or the right side of the fixed frame (6) is fixedly provided with an electric push rod (7), the end of the electric push rod (7) away from the fixed frame (6) is fixedly provided with an electric push rod support rod (8), and the bottom of the electric push rod support rod (8) is fixed to the ground.

5. The ammonium perchlorate crystal screening apparatus of claim 1, wherein: The front and rear sides of the screen (3) are fixedly provided with upper connecting plates (11) at the corners, and the lower end of the upper connecting plate (11) is provided with a gas cylinder (12), and the bottom of the gas cylinder (12) is fixed to the ground.

6. The ammonium perchlorate crystal screening apparatus of claim 1, wherein: The outer periphery of the screen (3) is fixedly provided with a rubber cover (10), and the rubber cover (10) covers the outside of the collecting box (4).

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