A kind of ammonium perchlorate weighing and packaging process

Abstract

The present application discloses an ammonium perchlorate weighing and packaging process, which relates to the field of packaging technology. The process is equipped with a tubular weighing and packaging device, which directly weighs and packages the ammonium perchlorate powder output from a dryer in a closed space. An elastic capsule is used to assist the process. The process achieves a high level of safety in the ammonium perchlorate weighing and packaging process and ensures the quality of the bagged ammonium perchlorate.

Description

Technical Field

[0001] The invention relates to the technical field of packaging, in particular to a process for weighing and packaging ammonium perchlorate. Background Art

[0002] Ammonium perchlorate is a white crystal that is deliquescent and a strong oxidant. It can explode when mixed with reducing agents, organic matter, flammable materials, or metal powders. It can also cause combustion and explosion when in contact with strong acids. When packaging ammonium perchlorate, it must be weighed and packaged.

[0003] When weighing and packaging ammonium perchlorate using prior art weighing and packaging equipment, ammonium perchlorate is in powder form and can easily spread throughout the production workshop, endangering the health of operators and even causing explosions. Due to its deliquescent nature, ammonium perchlorate spilled on the ground is difficult to reuse and can easily stick to corners and gaps in components such as the hopper and weighing bucket of the weighing and packaging equipment during the packaging and weighing process, making cleaning difficult (difficult and ineffective). Furthermore, over time (especially during equipment downtime), the ammonium perchlorate in the gaps can easily deliquesce, deteriorate, or even agglomerate. The deteriorated (deliquesced, agglomerated) ammonium perchlorate can potentially fall into the bagged ammonium perchlorate powder during the packaging process, seriously affecting the quality of the finished ammonium perchlorate product.

[0004] Therefore, there is a need for an ammonium perchlorate weighing and packaging process that is highly safe and can ensure the quality of bagged ammonium perchlorate. Summary of the Invention

[0005] The embodiments of the present application provide an ammonium perchlorate weighing and packaging process, thereby solving the technical problems in the prior art of poor safety during the ammonium perchlorate weighing and packaging process and the fact that bagged ammonium perchlorate powder is easily contaminated with deteriorated ammonium perchlorate, resulting in difficulty in ensuring the quality of the finished ammonium perchlorate product. The present application achieves the technical effect of high safety during the ammonium perchlorate weighing and packaging process and ensuring the quality of the bagged ammonium perchlorate.

[0006] The embodiment of the present application provides an ammonium perchlorate weighing and packaging process, which is equipped with a weighing and packaging device including a carrying component, a material dividing and blocking component, a weighing component, a gas conveying component, a bag forming component, and a conveying component with a conveyor belt structure;

[0007] The bearing assembly includes an outer sleeve, a bearing tube inside the outer sleeve, a closing plate for closing the top opening of the space between the bearing tube and the outer sleeve, and a gap closing assembly; the finished product conveying assembly is positioned at the bottom of the outer sleeve and has the same structure as the sewer deodorizing silica gel core;

[0008] The material separating and batching component includes a batching elastic tube, and the batching elastic tube and the bearing tube enclose a first space; the weighing component includes a weighing elastic tube and a pressure sensor positioned inside a second space. The weighing elastic tube has the same structure as the batching elastic tube, is located below the batching elastic tube, and encloses a second space with the bearing tube.

[0009] The process steps for weighing and dispensing ammonium perchlorate are as follows:

[0010] 1) Seal the gap between the bearing tube and the output tube of the dryer.

[0011] 2) Pump an inert gas into the space inside the outer sleeve.

[0012] 3) Control the batching elastic tube and the weighing elastic tube to expand simultaneously to divide the bearing tube into three segments.

[0013] 4) Control the dryer to output the powder, and then control the batching elastic tube to contract so that the powder gradually falls onto the weighing elastic tube.

[0014] 5) When the required amount is weighed, control the batching elastic tube to expand to block the powder, and control the weighing elastic tube to contract so that the powder falls and is filled into the bag.

[0015] 6) Agitate the weighing elastic tube.

[0016] 7) Repeat steps 2 to 6.

[0017] Furthermore, the bag forming component includes a material roll, a guide rod, a guiding deformation component, a welding component, and a packaging and cutting component; the material roll is a winding structure, positioned in the space between the outer sleeve and the bearing tube, and rotates under the control of the control unit to release the material tape wound around itself; the material tape is a plastic transparent tape; the guide rod is rod-shaped, horizontally arranged, and is rotatably connected to the inner wall of the outer sleeve around its own axis for guiding the movement of the material tape; the guiding deformation component is integrally annular, fixed on the bearing tube, and is used to gradually guide the strip-shaped material tape into a tubular shape; the welding component is positioned on the outer side wall of the bearing tube, and welds the tubular material tape by extrusion and heating to form a tube body from the tape; the packaging and cutting component is integrally in a U shape, positioned directly below the bearing tube, and when in use, the packaging and cutting component processes the tubular material tape into individual bags.

[0018] Furthermore, the gap sealing component is a combination of two annular sacs connected to the gas输送组件 (should be 'gas delivery component' in English). The lower annular sac has multiple air outlet holes, and the air outlet holes are arranged away from the bearing tube; when in use, when the air intake volume of the annular sac is greater than the air outlet volume, the annular sac expands, and continuous expansion of the annular sac will cause the air outlet holes to contact the output tube and thus seal. ​Preferably, the gap sealing component, the material blocking elastic tube, and the weighing elastic tube are tubular diaphragms and separation components;

[0020] The tubular diaphragm is an elastic membrane made of rubber, which is located inside the supporting tube, and the top and bottom are respectively fixed to the top and bottom of the supporting tube. The tubular diaphragm and the supporting tube together enclose a tubular space;

[0021] The partition assembly is used to separate the tubular space enclosed by the tubular diaphragm and the supporting tube, thereby forming a first space and a second space and an annular capsule for filling the gap between the supporting tube and the output tube.

[0022] Preferably, the separation component includes a powder storage capsule and a magnetic ring;

[0023] The outer wall of the tubular diaphragm is provided with 5 or more powder storage capsules, which are elastic capsules filled with iron powder. The powder storage capsules are sleeved and fixed on the tubular diaphragm, and the two are coaxial; a plurality of magnetic rings are fixed on the outer sleeve, which are electromagnet rings, corresponding one to one to the powder storage capsules, and the power on and off of the magnetic rings are controlled by a control unit; the magnetic rings attract the powder storage capsules through their own magnetic force, thereby dividing the tubular space enclosed by the tubular diaphragm and the supporting tube into several parts; the magnetic rings are powered off periodically to eliminate the existence of gaps.

[0024] Preferably, the separation assembly includes a first ring body, a second ring body and a combined hook;

[0025] The combined hook comprises a first hook body and a second hook body; the first hook body and the second hook body are both hook-shaped arc-shaped plates, and the first hook body is located above the second hook body; the first hook body is fixed to the outer wall of the tubular diaphragm, and the second hook body is fixed to the inner wall of the supporting tube, and both are arranged horizontally; a magnetic block is fixed to the bottom of the first hook body, and a repulsive magnet is fixed to the second hook body, and the repulsive magnet is a DC electromagnet. When the first hook body is hooked on the second hook body, the repulsive magnet is located directly below the magnetic block; a first ring body is provided above and below the first hook body, and the first ring body is an elastic rubber ring with built-in fluid, and the first ring body is fixed to the tubular diaphragm on the outer wall; a second ring body is provided above and below the second hook body, and the second ring body is also an elastic rubber ring with built-in fluid, and the second ring body is fixed to the inner wall of the supporting tube body; when in use, before using the device, the gas delivery component is first controlled to operate to pump the tubular space into a negative pressure. At this time, the first hook body is hooked on the second hook body, and the first ring body squeezes the second ring body to divide the tubular space into several parts; when cleaning is needed, the gas delivery component is controlled to operate to pump the tubular space into a negative pressure, and then the repulsive magnet is controlled to be energized to repel the magnetic block, and finally the gas delivery component is controlled to pump air into the tubular space, and the first hook body and the second hook body are automatically loosened.

[0026] Preferably, during the weighing and packaging process, the amount of gas in the first space can be controlled to continuously change, thereby promoting the falling of the powder.

[0027] Preferably, a knocking elastic sheet is further provided in the first space; the knocking elastic sheet is a tubular rubber elastic sheet, which is arranged longitudinally, and the top edge and the bottom edge are fixed on the inner wall of the supporting tube, and the knocking elastic sheet and the supporting tube body together form an annular space; the gas delivery component is connected to the annular space, and during the weighing and packaging process, the gas delivery component controls the amount of gas in the annular space, so that the knocking elastic sheet expands and frequently knocks on the tubular diaphragm, thereby promoting the falling of powder; the presence of the knocking elastic sheet is also beneficial to the cleaning of the tubular diaphragm, and can assist the cleaning by knocking.

[0028] Preferably, a plurality of knocking blocks are sealed on the surface of the knocking elastic sheet close to the tubular diaphragm, and the knocking blocks are rubber blocks.

[0029] Preferably, the knocking elastic sheet is provided with a plurality of knocking bags, which are cylindrical bags fixed on the surface of the knocking elastic sheet close to the tubular diaphragm and connected to the annular space; a pull rope is fixed at the end of the knocking bag away from the supporting tube, and the pull rope is an elastic rope, one end of which is fixed on the knocking bag, and the other end is fixed on the inner wall of the supporting tube; when air is pumped into the annular space, the knocking bag overcomes the elastic force of the pull rope and stretches toward the tubular diaphragm and then knocks the tubular diaphragm.

[0030] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0031] By providing an ammonium perchlorate weighing and packaging process, and supporting an overall tubular weighing and packaging device, the ammonium perchlorate powder output from a dryer is directly weighed and packaged in a closed space, and an elastic capsule is used to assist the process. The present invention effectively solves the technical problems in the prior art of poor safety during the ammonium perchlorate weighing and packaging process, and the bagged ammonium perchlorate powder is easily mixed with deteriorated ammonium perchlorate, resulting in difficulty in ensuring the quality of the ammonium perchlorate product. Thus, the present invention achieves the technical effect of high safety during the ammonium perchlorate weighing and packaging process and ensuring the quality of the bagged ammonium perchlorate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the weighing and filling device;

[0033] Figure 2 It is a schematic diagram of the deformation state of the weighing component and the material dividing and blocking component;

[0034] Figure 3 A schematic diagram of the structure of a material strip welded into a tube;

[0035] Figure 4A simplified structural diagram of the package cutting assembly;

[0036] Figure 5 It is a schematic diagram of the structure of the material strip welded into a bag;

[0037] Figure 6 Schematic diagram of the positional relationship between the supporting tube and the tubular diaphragm;

[0038] Figure 7 Schematic diagram of the positional relationship between the powder storage capsule and the combined hook;

[0039] Figure 8 Schematic diagram of the positional relationship between the striking elastic sheet and the tubular diaphragm;

[0040] Figure 9 This is a simplified diagram of the structure of the percussion capsule;

[0041] Figure 10 A schematic diagram of the positional relationship between multiple percussion capsules and percussion elastic sheets;

[0042] Figure 11 Schematic diagram of the connection relationship of the gas delivery components;

[0043] Figure 12 Schematic diagram of the structure of the percussion capsule;

[0044] Figure 13 This is a structural diagram of the combination hook.

[0045] In the picture:

[0046] Outer sleeve 110, carrying tube 120, closing plate 130, protective gas pumping assembly 140, gap closing assembly 150, finished product conveying assembly 160, output tube 170, material blocking elastic tube 210, weighing elastic tube 310, pressure sensor 320, gas conveying assembly 400, first space 410, second space 420, bag forming assembly 500, material strip 510, material roll 520, guide rod 530, guide deformation assembly 540, welding assembly 550, packaging and cutting assembly 560, conveying assembly 600, tubular diaphragm 710, powder storage capsule 720, first ring body 721, second ring body 722, magnetic ring 730, first hook body 741, second hook body 742, magnetic block 743, repulsive magnet 744, knocking elastic sheet 750, knocking block 751, knocking capsule 760, pull rope 761. DETAILED DESCRIPTION

[0047] To facilitate understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0048] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0050] Example 1

[0051] like Figure 1 As shown, the ammonium perchlorate weighing and packaging process of the present application is equipped with a weighing and packaging device, which is positioned on the output pipe 170 of the dryer (drying equipment for drying ammonium perchlorate), including a carrying component, a material dividing and blocking component, a weighing component, a gas conveying component 400, a bag forming component 500, a conveying component 600, a power component and a control unit.

[0052] The bearing assembly is tubular in shape as a whole, and includes an outer sleeve 110, a bearing tube 120, a closing plate 130 and a gap closing assembly 150;

[0053] The outer sleeve 110 is a hard pipe with a diameter of at least twice the diameter of the output pipe 170 and a length greater than 1.5 meters, and is used to support and fix the protective gas pumping assembly 140 and the finished product conveying assembly 160;

[0054] The supporting tube 120 is a hard tube, located inside the outer sleeve 110 (the outer sleeve 110 is sleeved on the supporting tube 120) and the two are coaxial; the length of the supporting tube 120 is shorter than the length of the outer sleeve 110, and serves to support and fix the material dividing and blocking components and the weighing components;

[0055] The sealing plate 130 is an annular plate, with an inner edge and an outer edge positioned on the side wall of the supporting tube 120 and the inner wall of the outer sleeve 110 respectively. The sealing plate 130 is located near the top of the supporting tube 120 to seal the top of the space between the supporting tube 120 and the outer sleeve 110.

[0056] The protective gas pumping assembly 140 is positioned on the outer sleeve 110 and is mainly an air pump for pumping inert gas into the space between the supporting tube 120 and the outer sleeve 110;

[0057] The gap sealing component 150 is used to fill the gap between the supporting tube 120 and the output tube 170, and is preferably an annular airbag or a tubular elastic sheet fixed to the inner wall of the supporting tube 120;

[0058] The finished product conveying assembly 160 is positioned at the bottom of the outer sleeve 110 and is used to reduce the leakage of inert gas in the space inside the outer sleeve 110 when the bagged ammonium perchlorate is output from the outer sleeve 110; the structure of the finished product conveying assembly 160 is the same as that of the sewer deodorizing silicone core with a one-way conduction function, and the inert gas in the space inside the outer sleeve 110 can only exit but not enter through the finished product conveying assembly 160.

[0059] The material distribution and blocking assembly is used to quantitatively output ammonium perchlorate powder downward, and includes a material blocking elastic tube 210; the material blocking elastic tube 210 is an elastic tube made of rubber, which is arranged longitudinally and the top and bottom are fixed to the inner wall of the supporting tube 120, and the longitudinal length in the unexpanded state is greater than 40 cm; the material blocking elastic tube 210 and the supporting tube 120 together form an annular space, and for the convenience of description, this space is defined as the first space 410; when the gas delivery assembly 400 delivers gas to the first space 410, the material blocking elastic tube 210 expands; during actual use, the expansion and contraction of the material blocking elastic tube 210 can be controlled by controlling the amount of gas in the first space 410, thereby controlling the falling amount of ammonium perchlorate powder.

[0060] The weighing assembly is used to weigh the required weight of ammonium perchlorate powder, including a weighing elastic tube 310 and a pressure sensor 320; the weighing elastic tube 310 has the same structure as the material-blocking elastic tube 210, is located directly below the material-blocking elastic tube 210, and is fixed on the inner wall of the supporting tube 120 at the top and bottom; the weighing elastic tube 310 and the supporting tube 120 together form an annular space, which is defined as the second space 420 for the convenience of description; the pressure sensor 320 is an air pressure sensor, which is positioned inside the second space 420 and fixed on the supporting tube 120. The inner wall of the tube 120 is connected to the control unit signal for detecting the gas pressure in the second space 420 and transmitting the pressure signal to the control unit; when the weighing elastic tube 310 expands to a certain extent, it isolates the supporting tube 120; when the received pressure signal reaches a certain value (the fixed value corresponds to a specific required weight), the control unit controls the material blocking elastic tube 210 to expand and thus close the powder falling channel, and then controls the weighing elastic tube 310 to contract so that the powder carried on the weighing elastic tube 310 falls; finally, the weighing elastic tube 310 is agitated multiple times to shake off the powder adhering to it.

[0061] like Figure 11As shown, the gas delivery component 400 is connected to the first space 410 and the second space 420, and is used for quantitatively delivering or extracting gas. It is positioned on the outer wall of the carrier tube 120 and is a combination of an air pump, an air valve, and multiple gas pipes.

[0062] The bag forming component 500 is used to transform the tape 510 from a tape into a tube and weld it into a bag shape by heating. It includes a tape reel 520, a guide rod 530, a guiding deformation component 540, a welding component 550, and a packaging and cutting component 560. The tape reel 520 is a winding structure and is positioned in the space between the outer sleeve 110 and the carrier tube 120. It rotates under the control of the control unit to release the tape 510 wound around itself. The tape 510 is a plastic transparent tape. The guide rod 530 is rod-shaped and is horizontally arranged. It is rotatably connected to the inner wall of the outer sleeve 110 around its own axis and is used to guide the movement of the tape 510. The guiding deformation component 540 is integrally annular and is fixed on the carrier tube 120. It is used to gradually guide the strip-shaped tape 510 into a tubular shape. As Figure 3 shown, the welding component 550 is positioned on the outer wall of the carrier tube 120. Preferably, it is an electric iron. It welds the tubular tape 510 by extrusion and heating to form a tube body from the tape. As Figure 4 shown, the packaging and cutting component 560 is integrally in a U shape and is positioned directly below the carrier tube 120. Preferably, it is a combination of two electric irons and a tool that can slide towards each other. In actual use, the packaging and cutting component 560 processes the tubular tape 510 into individual bags as Figure 5 shown.

[0063] [[ID=Aligned=12]]The conveying component 600 is a conveyor belt structure and is located directly below the outer sleeve 110. It functions to convey the formed ammonium perchlorate powder bags. The bag forming component 500 and the conveying component 600 are prior arts and will not be elaborated here.

[0064] The power component is used to provide power for the operation of each component of the weighing and dispensing device supporting this application, and the control unit functions to control the coordinated operation of each component of the weighing and dispensing device. Both are prior arts and will not be elaborated here.

[0065] Preferably, the control unit is a combination of a programmable logic controller and control buttons.

[0066] Preferably, the gas pumped by the protective gas pumping component 140 is dried inert gas, and the inert gas is preferably helium.

[0067] Preferably, the gap sealing component 150 is a combination of two annular bags connected to the gas delivery component 400, and a plurality of air outlets are provided on the lower annular bag, and the air outlets are arranged away from the supporting tube 120; in actual use, when the air intake of the annular bag is greater than the air output, the annular bag expands, and the continuous expansion of the annular bag will cause the air outlets to conflict with the output tube 170 and then close; when cleaning, the gas blown out of the air outlet can be used to more efficiently complete the cleaning of the material blocking elastic tube 210 and the weighing elastic tube 310.

[0068] like Figure 2 As shown, the steps for weighing and packaging ammonium perchlorate are as follows:

[0069] 1. Use the gap sealing assembly 150 to seal the gap between the carrier tube 120 and the dryer output pipe 170;

[0070] 2. Controlling the shielding gas pumping assembly 140 to (continuously) pump inert gas into the space within the outer sleeve 110;

[0071] 3. Control the material blocking elastic tube 210 and the weighing elastic tube 310 to expand simultaneously to separate the supporting tube 120 into three sections;

[0072] 4. Control the dryer to output the dried powder, and then control the elastic tube 210 to contract, so that the powder gradually falls onto the weighing elastic tube 310;

[0073] 5. When the gas pressure in the weighing elastic tube 310 reaches a certain value, the material blocking elastic tube 210 is controlled to expand to block the powder, and then the weighing elastic tube 310 is controlled to contract to allow the powder to fall into the bag;

[0074] 6. Agitate the weighing elastic tube 310 to shake off the powder adhering to it;

[0075] 7. Then repeat steps 2 to 6 to continue weighing and packaging the powder.

[0076] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0077] The present invention solves the technical problems in the prior art of poor safety in the weighing and subpackaging process of ammonium perchlorate and easy contamination of deteriorated ammonium perchlorate with bagged ammonium perchlorate powder, which makes it difficult to ensure the quality of the finished ammonium perchlorate product. The present invention achieves the technical effect of high safety in the weighing and subpackaging process of ammonium perchlorate and ensuring the quality of the bagged ammonium perchlorate.

[0078] The setting of the weighing and packaging device of the present application can effectively reduce the accumulation of ammonium perchlorate powder, and the entire device is easy to clean.

[0079] Example 2

[0080] Taking into account that during actual use of the solution in the above embodiment, although it can effectively reduce the accumulation of powder in the gaps and corners of the device and ensure easy cleaning, there are still gaps where powder can accumulate at the connection positions of the material blocking elastic tube 210 and the weighing elastic tube 310 with the supporting tube 120. Even if the material blocking elastic tube 210 and the weighing elastic tube 310 are controlled to shake, it is difficult to completely clear out the powder in these gaps; although these gaps are smaller, a certain amount of ammonium perchlorate powder may still accumulate in these gaps, which may to a certain extent affect the quality of the packaged ammonium perchlorate powder; in response to the above problems, the embodiment of the present application has made certain optimization and improvements to the structures of the gap sealing component 150, the material blocking elastic tube 210, and the weighing elastic tube 310 on the basis of the above embodiment, and a tubular diaphragm 710 is used to replace the above structure and realize related functions;

[0081] Specifically: Figure 6 As shown, the tubular diaphragm 710 is an elastic membrane made of rubber, which is located inside the supporting tube 120, and the top and bottom are respectively fixed to the top and bottom of the supporting tube 120. The tubular diaphragm 710 and the supporting tube 120 together enclose a tubular space; the outer wall of the tubular diaphragm 710 is provided with 5 or more powder storage capsules 720, which are elastic capsules filled with iron powder. The powder storage capsules 720 are sleeved and fixed on the tubular diaphragm 710, and the two are coaxial; the outer sleeve 110 is fixed with multiple magnetic rings 730, which are electromagnet rings and correspond one to one to the powder storage capsules 720. The power on and off of the magnetic rings 730 is controlled by a control unit; The magnetic ring 730 plays the role of attracting the powder storage capsule 720 through its own magnetic force, thereby dividing the tubular space surrounded by the tubular diaphragm 710 and the supporting tube 120 into several parts; in actual use, the magnetic ring 730 absorbs the powder storage capsule 720 to form the first space 410 and the second space 420 and the annular capsule for filling the gap between the supporting tube 120 and the output tube 170, and then weighing and packaging are carried out; the magnetic ring 730 is powered off regularly to eliminate the existence of gaps; and the expansion, contraction and vibration of the tubular diaphragm 710 can be controlled by controlling the amount of gas inside the tubular space and cooperating with the magnetic force of the magnetic ring 730, thereby completing the self-cleaning of the tubular diaphragm 710.

[0082] Example 3

[0083] In order to save energy, the present embodiment optimizes and improves the structure of the magnetic ring 730 and the powder storage capsule 720 based on the second embodiment, and uses a first ring body 721, a second ring body 722 and a combined hook to replace the above structure; specifically:

[0084] like Figure 7 and Figure 13As shown, in the second embodiment, a plurality of combination hooks are evenly distributed at the position where the original powder storage capsule 720 is located, and the combination hook includes a first hook body 741 and a second hook body 742; the first hook body 741 and the second hook body 742 are both hook-shaped arc-shaped plates, and the first hook body 741 is located above the second hook body 742; the first hook body 741 is fixed to the outer wall of the tubular diaphragm 710, and the second hook body 742 is fixed to the inner wall of the carrying tube 120, and both are arranged horizontally; a magnetic block 743 is fixed to the bottom of the first hook body 741, and a repulsive magnet 744 is fixed to the second hook body 742, and the repulsive magnet 744 is a DC electromagnet. When the first hook body 741 is hooked on the second hook body 742, the repulsive magnet 744 is located directly below the magnetic block 743; a first ring body 721 is provided above and below the first hook body 741, and the first ring body 721 is built-in The elastic rubber ring for fluid, the first ring body 721 is fixed on the outer wall of the tubular diaphragm 710; a second ring body 722 is provided above and below the second hook body 742, and the second ring body 722 is also an elastic rubber ring with built-in fluid, and the second ring body 722 is fixed on the inner wall of the supporting tube body 120; in actual use, before using the device, the gas delivery component 400 is first controlled to operate to pump negative pressure into the tubular space. At this time, the first hook body 741 is hooked on the second hook body 742, and the first ring body 721 squeezes the second ring body 722 to divide the tubular space into several parts; when cleaning is needed, the gas delivery component 400 is controlled to operate to pump negative pressure into the tubular space, and then the repulsive magnet 744 is controlled to be energized to repel the magnetic block 743, and finally the gas delivery component 400 is controlled to pump air into the tubular space, and the first hook body 741 and the second hook body 742 are automatically loosened.

[0085] Example 4

[0086] In order to further facilitate the smooth falling of powder and thus improve the weighing and packaging efficiency, preferably, during the weighing and packaging process, the amount of gas in the first space 410 can be controlled to continuously change (shaking the material blocking elastic tube 210 or the tubular diaphragm 710) to promote the falling of powder.

[0087] Preferably, Figure 8As shown, in order to further facilitate the smooth falling of the powder, the embodiment of the present application adds a knocking elastic sheet 750 in the first space 410 on the basis of the above embodiment; the knocking elastic sheet 750 is a tubular rubber elastic sheet, which is arranged longitudinally, and the top edge and the bottom edge are both fixed on the inner wall of the supporting tube 120, and the knocking elastic sheet 750 and the supporting tube body 120 together form an annular space; the gas delivery component 400 is connected to the annular space, and during the weighing and packaging process, the gas delivery component 400 controls the amount of gas in the annular space, so that the knocking elastic sheet 750 expands and frequently knocks the tubular diaphragm 710, thereby promoting the falling of the powder; the presence of the knocking elastic sheet 750 is also beneficial to the cleaning of the tubular diaphragm 710, and can assist the cleaning by knocking.

[0088] Preferably, when the amount of gas in the annular space changes, the total amount of gas in the first space 410 is maintained substantially unchanged.

[0089] Preferably, a plurality of knocking blocks 751 are sealed on the surface of the knocking elastic sheet 750 close to the tubular diaphragm 710, and the knocking blocks 751 are rubber blocks.

[0090] Preferably, Figure 9 、 Figure 10 and Figure 12 As shown, the knocking elastic sheet 750 is provided with a plurality of knocking bags 760, which are cylindrical bags fixed on the surface of the knocking elastic sheet 750 close to the tubular diaphragm 710 and connected to the annular space; a pull rope 761 is fixed at the end of the knocking bag 760 away from the supporting tube 120, and the pull rope 761 is an elastic rope, one end of which is fixed on the knocking bag 760, and the other end is fixed on the inner wall of the supporting tube 120; when air is pumped into the annular space, the knocking bag 760 overcomes the elastic force (tension) of the pull rope 761 and stretches toward the tubular diaphragm 710 and then knocks the tubular diaphragm 710.

[0091] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An ammonium perchlorate weighing and packaging process, characterized in that: A weighing and packaging device is provided which includes a load-bearing component, a material dividing and blocking component, a weighing component, a gas conveying component, a bag forming component, and a conveying component of a conveyor belt structure; The bearing assembly includes an outer sleeve, a bearing tube inside the outer sleeve, a closing plate for closing the top opening of the space between the bearing tube and the outer sleeve, and a gap closing assembly; the finished product conveying assembly is positioned at the bottom of the outer sleeve and has the same structure as the sewer deodorizing silica gel core; The material dividing and stopping assembly includes a material stopping elastic tube, which and the supporting tube enclose a first space; the weighing assembly includes a weighing elastic tube and a pressure sensor positioned inside the second space, the weighing elastic tube having the same structure as the material stopping elastic tube, being located below the material stopping elastic tube, and enclosing the second space with the supporting tube; The steps for weighing and packaging ammonium perchlorate are as follows: 1) Seal the gap between the carrier tube and the dryer output pipe; 2) Pump inert gas into the space inside the outer sleeve; 3) Control the material-blocking elastic tube and the weighing elastic tube to expand simultaneously to separate the load-bearing tube into three sections; 4) Control the dryer to output powder, and then control the elastic tube to shrink, so that the powder gradually falls onto the weighing elastic tube; 5) When the required amount is reached, the elastic tube for blocking the powder is controlled to expand, and the elastic tube for weighing is controlled to contract so that the powder falls into the bag; 6) Agitation and weighing of elastic tube; 7) Repeat steps 2 to 6; The gap sealing component, the material blocking elastic tube, and the weighing elastic tube are tubular diaphragms and separation components; The tubular diaphragm is an elastic membrane made of rubber, which is located inside the supporting tube, and the top and bottom are respectively fixed to the top and bottom of the supporting tube. The tubular diaphragm and the supporting tube together enclose a tubular space; The partition assembly is used to separate the tubular space enclosed by the tubular diaphragm and the supporting tube, thereby forming a first space and a second space, and an annular capsule for filling the gap between the supporting tube and the output tube; The separation assembly includes a first ring body, a second ring body and a combined hook; The combined hook includes a first hook body and a second hook body; both the first hook body and the second hook body are hook-shaped arc plates, and the first hook body is located above the second hook body; the first hook body is fixed on the outer wall of the tubular diaphragm, and the second hook body is fixed on the inner wall of the carrier tube, and both are arranged horizontally; a magnetic block is fixed at the bottom of the first hook body, and a repulsive magnet is fixed on the second hook body. The repulsive magnet is a DC electromagnet. When the first hook body is hooked on the second hook body, the repulsive magnet is located directly below the magnetic block; a first ring body is provided above and below the first hook body. The first ring body is an elastic rubber ring filled with fluid, and the first ring body is fixed on the outer side wall of the tubular diaphragm; a second ring body is provided above and below the second hook body. The second ring body is also an elastic rubber ring filled with fluid, and the second ring body is fixed on the inner wall of the carrier tube; during use, before the device is used, first control the gas delivery component to operate to evacuate the tubular space to a negative pressure. At this time, the first hook body is hooked on the second hook body, and the first ring body squeezes the second ring body to divide the tubular space into several parts; when cleaning is required, control the gas delivery component to operate to evacuate the tubular space to a negative pressure, then control the repulsive magnet to be energized to repel the magnetic block, and finally control the gas delivery component to pump gas into the tubular space, and the first hook body and the second hook body are automatically released.

2. The ammonium perchlorate weighing and packaging process according to claim 1, wherein: The bag forming component includes a material roll, a guide rod, a guiding deformation component, a welding component and a packaging and cutting component; The material roll is a winding structure, positioned in the space between the outer sleeve tube and the carrier tube, and rotates under the control of the control unit to release the material tape wound around itself; the material tape is a plastic transparent tape; the guide rod is rod-shaped, horizontally arranged, and rotatably connected to the inner wall of the outer sleeve tube around its own axis for guiding the movement of the material tape; the guiding deformation component is integrally annular and fixed on the carrier tube for gradually guiding the strip-shaped material tape into a tube shape; the welding component is positioned on the outer side wall of the carrier tube, and the tubular material tape is welded by extrusion and heating to form a tube body from the tape; the packaging and cutting component is integrally in a U shape and is positioned directly below the carrier tube. During use, the packaging and cutting component processes the tubular material tape into individual bags.

3. The ammonium perchlorate weighing and packaging process according to claim 1, wherein: The gap closing component is a combination of two annular sacs connected to the gas delivery component, and a plurality of air outlet holes are provided on the lower annular sac, and the air outlet holes are arranged away from the carrier tube; during use, when the intake air volume of the annular sac is greater than the outlet air volume, the annular sac expands, and the continuous expansion of the annular sac will cause the air outlet holes to contact the output pipe and thus be closed.

4. The ammonium perchlorate weighing and packaging process according to claim 1, wherein: The separation component includes a powder storage sac and a magnetic ring; The outer wall of the tubular diaphragm is provided with 5 or more powder storage capsules, which are elastic capsules filled with iron powder. The powder storage capsules are sleeved and fixed on the tubular diaphragm, and the two are coaxial; a plurality of magnetic rings are fixed on the outer sleeve, which are electromagnet rings, corresponding one to one to the powder storage capsules, and the power on and off of the magnetic rings are controlled by a control unit; the magnetic rings attract the powder storage capsules through their own magnetic force, thereby dividing the tubular space enclosed by the tubular diaphragm and the supporting tube into several parts; the magnetic rings are powered off periodically to eliminate the existence of gaps.

5. The ammonium perchlorate weighing and packaging process according to claim 1, wherein: During the weighing and packaging process, the amount of gas in the first space can be controlled to continuously change, thereby promoting the falling of powder.

6. The ammonium perchlorate weighing and packaging process according to claim 1 or 4, wherein: A knocking elastic sheet is also provided in the first space; the knocking elastic sheet is a tubular rubber elastic sheet, which is arranged longitudinally, and the top edge and the bottom edge are fixed on the inner wall of the supporting tube, and the knocking elastic sheet and the supporting tube body together form an annular space; the gas delivery component is connected to the annular space, and during the weighing and packaging process, the gas delivery component controls the amount of gas in the annular space, so that the knocking elastic sheet expands and frequently knocks on the tubular diaphragm to promote the falling of powder; the presence of the knocking elastic sheet is also beneficial to the cleaning of the tubular diaphragm, and can assist the cleaning by knocking.

7. The ammonium perchlorate weighing and packaging process according to claim 6, wherein: A plurality of knocking blocks are sealed on the surface of the knocking elastic sheet close to the tubular diaphragm, and the knocking blocks are rubber blocks.

8. The ammonium perchlorate weighing and packaging process according to claim 6, wherein: The knocking elastic sheet is provided with a plurality of knocking bags, which are cylindrical bags fixed on the surface of the knocking elastic sheet close to the tubular diaphragm and connected with the annular space; a pulling rope is fixed at the end of the knocking bag away from the supporting tube, and the pulling rope is an elastic rope, one end of which is fixed on the knocking bag and the other end is fixed on the inner wall of the supporting tube; when air is pumped into the annular space, the knocking bag overcomes the elastic force of the pulling rope and stretches toward the tubular diaphragm and then knocks the tubular diaphragm.

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