Ammonium perchlorate drying process

Abstract

The present application discloses an ammonium perchlorate drying process, which relates to the technical field of drying processes and is equipped with a drying device. The drying device includes a housing, an elastic partition membrane, a plugging component, a material lifting component, a pulling component, a bagging component, and a bearing pipe body; a raw material input pipe and a vacuum suction component are provided at the top of the housing; the elastic partition membrane is a rubber material elastic membrane fixed on the inner wall of the housing; the inner space of the housing is divided into a drying space and a packaging space; a central hole is provided on the elastic partition membrane, and a positioning ring is fixed on the central hole; the drying and packaging of ammonium perchlorate are completed by successively performing steps of injecting gas, filling materials, evacuating, ejecting and dispersing powder, cooling powder, injecting gas into the packaging space, transporting and packaging; the technical effects are achieved that the heating and cooling speeds of ammonium perchlorate powder during the drying process of ammonium perchlorate are relatively fast, the drying uniformity is good, the drying efficiency is high, and the ammonium perchlorate powder does not contact with natural air before packaging after drying.

Description

Technical Field

[0001] The present invention relates to the technical field of drying processes, and particularly to an ammonium perchlorate drying process. Background Art

[0002] Ammonium perchlorate is a white crystal with deliquescence property and is a strong oxidizing agent. Mixing it with reducing agents, organic substances, flammable substances or metal powders will cause explosion, and contacting it with strong acids has the risk of causing combustion and explosion. Ammonium perchlorate needs to be dried during the preparation process.

[0003] In the prior art, ammonium perchlorate is usually dried by means of safe oven drying, vacuum drying or drying in a drying room; when the usage amount is small and only for small-scale research, safe oven drying which is convenient to use, has a relatively low cost and is easy to install is usually selected; in the case of large-scale production, vacuum drying is more ideal, which can ensure the safe, stable, convenient, energy-saving and long-term storage of ammonium perchlorate: drying ammonium perchlorate in a drying room, the product quality is not only easily affected by various factors (the temperature and humidity of the natural environment, the heat preservation of the drying room, the sealing of doors and windows, the construction quality of the drying room itself, etc. will all affect the product quality, and fine ammonium perchlorate will agglomerate and the particle size will become larger after long-term cooling and storage in the drying room, which is not conducive to ensuring the quality of ammonium perchlorate).

[0004] When drying ammonium perchlorate by vacuum drying, a vacuum dryer is usually used to complete the drying process; however, in the prior art, when the vacuum dryer dries ammonium perchlorate, due to its own structural limitations, the heating and cooling speeds of ammonium perchlorate in the vacuum dryer are relatively slow; and in order to ensure the drying uniformity, the thickness of the ammonium perchlorate powder laid flat in the vacuum dryer usually cannot be greater than 10 centimeters (thinning the ammonium perchlorate powder in the vacuum dryer can not only ensure the drying uniformity, but also shorten the time required for single drying), which severely limits the amount of ammonium perchlorate powder that can be dried by a single vacuum dryer per unit time, and thus seriously affects the drying efficiency; and after drying is completed using the vacuum dryer in the prior art, the dried ammonium perchlorate powder needs to be output from the vacuum dryer before it can be packaged. After the dried ammonium perchlorate powder contacts natural air, it will have a certain adverse impact on its own quality (such as getting damp), and a part of oxygen will remain in the storage bag during packaging, thereby affecting the effective storage time of the ammonium perchlorate powder. Summary of the Invention

[0005] The object of the present invention is to provide an ammonium perchlorate drying process to solve the technical problems in the prior art mentioned in the above background art, namely, the relatively slow heating and cooling rates of ammonium perchlorate powder during the drying process, poor drying uniformity, low drying efficiency, and the quality of ammonium perchlorate powder being easily affected by contact with natural air before packaging after drying; and to achieve the technical effects that the heating and cooling rates of ammonium perchlorate powder during the drying process are relatively fast, the drying uniformity is good, the drying efficiency is high, and the ammonium perchlorate powder does not contact natural air before packaging after drying.

[0006] To achieve the above object, the present invention provides the following technical solution: an ammonium perchlorate drying process, which is equipped with a drying device. The drying device includes a hollow cylindrical housing, an elastic partition membrane, a plugging component, a material lifting component for making the powder inside the drying space rise by blowing air, a pulling component with a hoisting structure as the main body, a bagging component located in the packaging space, and a bearing pipe body; a raw material input pipe and a vacuum suction component are provided at the top of the housing, and an output channel and a gas pumping component are provided on the side wall.

[0007] The elastic partition membrane is a rubber material elastic membrane, which is fixed on the inner wall of the housing and is located near the center of the housing; it divides the inner space of the housing into a drying space and a packaging space; a central hole is provided on the elastic partition membrane, and a positioning ring with an internal electromagnet is fixed on the central hole.

[0008] The steps are as follows:

[0009] 1) Continuously inject inert gas at 65 to 75 degrees into the drying space;

[0010] 2) Transport a fixed amount of ammonium perchlorate powder to be dried into the drying space of the drying device;

[0011] 3) Control the operation of the vacuum suction component to make the vacuum degree in the drying space reach 93.3 - 98.6 KPa and maintain it;

[0012] 4) Control the operation of the pulling component to eject the powder on the elastic partition membrane;

[0013] 5) According to the actual drying requirements and the drying degree of the powder to be dried, continuously operate the drying device for 0.2 to 0.8 hours; after drying, pump cold air into the drying space; pump inert gas into the packaging space 3 minutes before the drying is completed;

[0014] 6) Control the central hole to be exposed;

[0015] 7) Control the operation of the pulling component to lower the positioning ring, and the powder will pour into the bearing pipe body under the influence of its own weight;

[0016] 8) Bag the powder in the packaging space.

[0017] Preferably, the material lifting assembly includes a gas input assembly, a temperature adjustment assembly, and an air delivery ring; the gas input assembly is used for pumping dry inert gas and is an air pump;

[0018] The temperature adjustment assembly is positioned on the gas input assembly and is used for adjusting the temperature of the gas output from the gas input assembly;

[0019] The air delivery ring is fixed on the side wall of the housing and serves as a gas channel;

[0020] A plurality of injection holes are evenly distributed in a ring shape at a position on the housing close to the air delivery ring, and the injection holes are communicated with the air delivery ring;

[0021] The injection holes are located above the elastic partition membrane and the distance between the injection holes and the elastic partition membrane is less than 0.8 meters;

[0022] The gas ejected from the injection holes blows towards the drying space.

[0023] Preferably, the included angle between the length direction of the injection hole and the connection line between the injection hole and the axis of the housing is 30 to 75 degrees, and the ejected air flow will converge into a spiral shape.

[0024] Preferably, the drying equipment further includes a hot liquid circulation assembly;

[0025] The elastic partition membrane is a double-layer structure, which includes a top membrane and a bottom membrane, and both the top membrane and the bottom membrane are rubber material elastic membranes; the edges of the top membrane and the bottom membrane are fixed on the inner wall of the housing and the positioning ring;

[0026] Liquid is filled in the space between the top membrane and the bottom membrane; the hot liquid circulation assembly is a combination of a liquid pump, a liquid temperature adjustment assembly, and a liquid storage tank. The liquid pump is used for controlling the liquid circulation between the liquid in the space between the top membrane and the bottom membrane and the liquid in the liquid storage tank, and then controlling the temperature of the top membrane, thereby facilitating the heating and cooling of the ammonium perchlorate powder.

[0027] Preferably, a deformation magnet group is provided between the top membrane and the bottom membrane;

[0028] The deformation magnet group is a combination of multiple sheet-shaped electromagnets, and the sheet-shaped electromagnets are evenly distributed on the bottom surface of the top membrane and the top surface of the bottom membrane;

[0029] And the electromagnets on the bottom surface of the top membrane and the electromagnets on the top surface of the bottom membrane correspond one by one; during the drying process, the deformation magnet group operates, causing the top membrane and the bottom membrane to continuously shake, thereby intermittently lifting the ammonium perchlorate powder.

[0030] Preferably, when the deformed magnet group operates, under the action of magnetic force, a plurality of annular grooves are formed on the top film; these grooves will accumulate a certain amount of powder, so that when the elastic separation film releases elastic potential energy, the powder on the top film will be ejected more dispersedly.

[0031] Preferably, the pulling assembly includes a pulling winch and a pulling rope; it also includes a positioning block and an annular guide rail; the positioning block is slidably positioned on the positioning ring and rotates around the axis of the positioning ring; the annular guide rail is annular and fixed on the inner wall of the sub-packaging space, and its axis coincides with the axis of the housing;

[0032] The pulling winch is slidably positioned on the annular guide rail and slides along the annular guide rail; one end of the pulling rope is wound and positioned on the pulling winch, and the other end is fixed on the positioning ring;

[0033] During the drying process, the pulling winch keeps sliding, and the pulling angles are different when pulling, so as to facilitate the dispersion of the powder.

[0034] Preferably, a side-mounted ejection bladder is fixed on the side wall of the drying space. The side-mounted ejection bladder is an elastic bladder made of rubber and is tubular as a whole; the axis of the side-mounted ejection bladder coincides with the axis of the housing; the powder ejected by the elastic separation film impacts the side-mounted ejection bladder and then is bounced back for secondary dispersion.

[0035] Preferably, the gas input assembly of the material lifting assembly pumps gas into the side-mounted ejection bladder. The number of injection holes is multiple and they are all positioned on the side-mounted ejection bladder; during drying, the gas ejected from the injection holes assists in dispersing the lifted powder.

[0036] Preferably, a control magnet group is fixed inside the side-mounted ejection bladder. The control magnet group is a combination of multiple electromagnetic iron sheet bodies; the electromagnetic iron sheet bodies are positioned on the two inner side walls of the side-mounted ejection bladder, and the electromagnetic iron sheet bodies on the two inner side walls correspond to each other; during drying, the control magnet group operates, and the electromagnetic iron sheet bodies are alternately powered on and off. At this time, the ejection direction of the injection holes keeps changing, stirring the powder in the drying space.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] By optimizing and improving the ammonium perchlorate drying process in the prior art, a drying device is equipped to dry ammonium perchlorate after it is lifted and dried. This effectively solves the technical problems in the prior art, such as the relatively slow heating and cooling rates of ammonium perchlorate powder during the drying process, poor drying uniformity, low drying efficiency, and the fact that the ammonium perchlorate powder is prone to being affected by its own quality due to contact with natural air before packaging after drying. Furthermore, it achieves the technical effects that the heating and cooling rates of ammonium perchlorate powder during the drying process are relatively fast, the drying uniformity is good, the drying efficiency is high, and the ammonium perchlorate powder does not contact natural air (air with normal oxygen content) before packaging after drying. Brief Description of the Drawings

[0039] Figure 1 It is a schematic diagram of the overall structure of the drying device;

[0040] Figure 2 It is a schematic diagram of the layout relationship of the air inlet of the vacuum suction component;

[0041] Figure 3 It is a schematic diagram of the positional relationship between the injection holes on the air delivery ring;

[0042] Figure 4 It is a schematic diagram of the positional relationship between the top film and the bottom film;

[0043] Figure 5 It is a schematic diagram of the positional relationship between the deformed magnet group and the elastic partition membrane;

[0044] Figure 6 It is a schematic diagram of the state after the deformation of the top film and the bottom film;

[0045] Figure 7 It is a schematic diagram of the structure of the pulling component;

[0046] Figure 8 It is a schematic diagram of the positional relationship between the side-mounted ejection capsule and the inner wall of the shell;

[0047] Figure 9 It is a schematic diagram of the layout relationship of the control magnet group;

[0048] Figure 10 It is a schematic diagram of the connection relationship between the side-mounted ejection capsule and the gas input component;

[0049] Figure 11 It is a schematic diagram of the positional relationship between the side-mounted ejection capsule and the injection hole;

[0050] Figure 12 It is a schematic diagram of the structure of the side-mounted ejection capsule.

[0051] In the figure: housing 100, raw material input pipe 110, vacuum suction assembly 120, output channel 130, rotating partition 140, air pumping assembly 150, base 160, elastic separation membrane 200, central hole 210, positioning ring 220, guiding pipe 221, top membrane 230, bottom membrane 240, hot liquid circulation assembly 250, deformed magnet group 260, blocking assembly 300, blocking block 310, positioning rope 320, material lifting assembly 400, gas input assembly 410, temperature adjustment assembly 420, gas transmission ring 430, injection hole 440, pulling assembly 500, pulling winch 510, pulling rope 520, reversing wheel 530, positioning block 540, annular guide rail 550, bagging assembly 600, material roll 610, bearing pipe body 620, bag body welding assembly 630, encapsulation cutting assembly 640, side-mounted ejection bladder 700, control magnet group 710. Detailed implementation manners

[0052] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0053] It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments 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 related listed items.

[0055] Embodiment 1

[0056] As Figure 1 shown, the ammonium perchlorate drying process of the present application is equipped with a drying device; the drying device includes a housing 100, an elastic separation membrane 200, a blocking assembly 300, a material lifting assembly 400, a pulling assembly 500, a bagging assembly 600, a power assembly and a control unit.

[0057] The shell 100 is a hollow cylinder that serves as a load-bearing structure. A raw material input pipe 110 and a vacuum suction assembly 120 are provided on the top of the shell. An output channel 130 for outputting packaged ammonium perchlorate powder is provided near the bottom of the side wall. The inner bottom of the shell 100 is inclined to facilitate the sliding of the bagged ammonium perchlorate powder into the output channel 130. One or more rotating partitions 140 are positioned on the output channel 130. The rotating partitions 140 are hard or soft plates that are rotatably connected to the inner wall of the output channel 130. A torsion spring is positioned at the connection position. Under normal conditions, the rotating partitions 140 are 0 closes the output channel 130. When bags of ammonium perchlorate powder hit the rotating partition 140, the rotating partition 140 rotates, thereby opening the output channel 130. The vacuum suction assembly 120 is structured as an air pump, and its air inlet is located in the interior space of the housing 100, which is used to extract the gas inside the housing 100. The bottom of the housing 100 is provided with a base 160. The pump assembly 150 is positioned at a lower center position on the inner wall of the housing 100. The pump assembly 150 is an air pump that pumps dry inert gas into the interior of the housing 100 under the control of the control unit.

[0058] The elastic partition membrane 200 is an elastic membrane made of rubber, which is arranged horizontally and its edge is fixed on the inner wall of the shell 100, and is located near the center of the shell 100; the elastic partition membrane 200 divides the internal space of the shell 100 into two parts. For the convenience of description, the upper space separated is defined as a drying space, and the lower space separated is defined as a packaging space; a center hole 210 is provided at the center position of the elastic partition membrane 200, and the center hole 210 is a through hole, and the diameter of the center hole 210 is less than 0.1 times the diameter of the elastic partition membrane 200; a hard positioning ring 220 is fixed on the edge of the center hole 210; the positioning ring 220 has an electromagnet controlled by a control unit.

[0059] Preferably, for the convenience of subpackaging, a guide tube 221 is fixed to the bottom of the positioning ring 220, and the guide tube 221 is trumpet-shaped with a larger upper part and a smaller lower part.

[0060] The sealing assembly 300 is used to timely seal the center hole 210, and includes a sealing block 310 and a positioning rope 320; the sealing block 310 is conical or a cone combination (a rotating body with a large middle and pointed ends and the height of the cone as the axis), and the material includes iron, preferably an iron block coated with a rubber layer; when drying, the sealing block 310 is adsorbed on the positioning ring 220 and seals the center hole 210; the positioning rope 320 is an elastic rope, which is arranged longitudinally, with the top fixed on the inner top of the shell 100 and the bottom fixed on the top of the sealing block 310.

[0061] The material lifting component 400 is used to lift the ammonium perchlorate powder inside the drying space by blowing air to assist in the drying process, and includes a gas input component 410, a temperature adjustment component 420, and an air delivery ring 430; the gas input component 410 is used to pump dry inert gas, which is an air pump; the temperature adjustment component 420 is positioned on the gas input component 410 and is used to adjust the temperature of the gas output from the gas input component 410, preferably a combination of an electric heating wire and a semiconductor refrigeration sheet; the air delivery ring 430 is fixed on the side wall of the housing 100 and serves as a gas passage; a plurality of injection holes 440 are evenly distributed in a ring shape at a position on the housing 100 close to the air delivery ring 430, and the injection holes 440 are communicated with the air delivery ring 430; the injection holes 440 are located above the elastic partition membrane 200 and the distance between the injection holes 440 and the elastic partition membrane 200 is less than 0.8 meters; the gas ejected from the injection holes 440 blows towards the drying space.

[0062] The inert gas is preferably helium.

[0063] The main body of the pulling component 500 is a winch structure, which is positioned on the inner wall of the sub-packaging space and is used to store elastic potential energy in the elastic partition membrane 200 by pulling to assist in the drying process, and includes a pulling winch 510 and a pulling rope 520; the pulling winch 510 is fixed on the inner wall of the sub-packaging space, one end of the pulling rope 520 is wound and positioned on the pulling winch 510, and the other end is fixed on the positioning ring 220.

[0064] Preferably, in order to make the deformation of the elastic partition membrane 200 more uniform and facilitate the pulling process, a reversing wheel 530 is also positioned inside the housing 100, the pulling rope 520 is always in close contact with the reversing wheel 530, and the entire pulling rope 520 is in a "√" shape.

[0065] A bearing pipe body 620 is fixed inside the sub-packaging space. The bearing pipe body 620 is a longitudinally arranged rigid pipe, which serves as a passage. Its diameter is approximately the same as the diameter of the central hole 210 and is located directly below the central hole 210.

[0066] The bagging component 600 is used to bag the powder output from the bearing pipe body 620. It is a prior art and will not be elaborated here.

[0067] Preferably, the bagging component 600 includes a material roll 610, a bag body welding component 630, and a packaging cutting component 640; the material roll 610 is a rolled plastic tape. When the material roll 610 feeds the tape, the plastic tape gradually wraps around the bearing pipe body 620 and gradually changes from a strip shape to a pipe shape under the action of the bag body welding component 630. The plastic tape forming the pipe will hold the powder output from the bearing pipe body 620, and then it will be cut into bag bodies by the packaging cutting component 640 and sealed by heating and welding at the same time.

[0068] Preferably, a material distribution and baffle mechanism controlled by a control unit is built in the carrier pipe body 620 for dispensing powders of a fixed volume or weight.

[0069] The power assembly is used to provide power for the operation of each component of the drying equipment supporting this application, and the control unit plays a role in controlling the coordinated operation of each component of the drying equipment supporting this application. Both are prior arts and will not be elaborated here.

[0070] Preferably, the control unit is a combination of a programmable logic controller and control buttons.

[0071] Preferably, as Figure 3 shown, the included angle between the length direction of the injection hole 440 and the line connecting the injection hole 440 and the axis of the housing 100 is 30 to 75 degrees, and the ejected air flow will converge into a spiral shape.

[0072] Preferably, as Figure 2 shown, the air inlet of the vacuum suction assembly 120 is multiple, and the multiple air inlets are evenly distributed on the side wall of the housing 100 near the top.

[0073] The process steps of the ammonium perchlorate drying process of this application are as follows:

[0074] 1. Control the operation of the material lifting assembly 400 of the drying equipment to continuously inject inert gas at 65 to 75 degrees into the drying space;

[0075] 2. Transport a certain amount (the specific amount is determined according to the size of the drying space) of ammonium perchlorate powder to be dried into the drying space of the drying equipment through the raw material input pipe 110, so that the thickness of the ammonium perchlorate powder on the elastic partition membrane 200 is greater than 15 cm; close the raw material input pipe 110;

[0076] 3. Control the operation of the vacuum suction assembly 120 to make the vacuum degree in the drying space reach 93.3 - 98.6 KPa (700 - 740 mmHg) and maintain it;

[0077] 4. Control the operation of the pulling assembly 500 to continuously make the elastic partition membrane 200 accumulate and release elastic potential energy, and eject the powder on the elastic partition membrane 200 to disperse the powder;

[0078] 5. Operate the drying equipment continuously for 0.2 to 0.8 hours according to the actual drying requirements and the drying degree of the powder to be dried; after drying, pump inert gas at a temperature of 5 to 15 degrees Celsius into the drying space through the material lifting assembly 400 to assist the powder in cooling; control the operation of the gas pumping assembly 150 3 minutes before the drying is completed to pump inert gas into the dispensing space;

[0079] 6. Cut off the power supply of the electromagnet on the control positioning ring 220. At this time, the plugging block 310 disengages from the positioning ring 220, and the central hole 210 is exposed.

[0080] 7. Control the operation of the pulling component 500 to pull down the positioning ring 220, and the dried powder will pour into the bearing pipe body 620 under the influence of its own weight.

[0081] 8. Control the operation of the bagging component 600 to bag the powder in the sub-packaging space; after bagging is completed, it is discharged from the output channel 130.

[0082] The technical solutions in the embodiments of the present application at least have the following technical effects or advantages:

[0083] It solves the technical problems in the prior art that the heating and cooling rates of ammonium perchlorate powder are relatively slow during the drying process of ammonium perchlorate, the drying uniformity is poor, the drying efficiency is low, and the ammonium perchlorate powder will come into contact with natural air before sub-packaging after drying, resulting in its quality being easily affected. It realizes the technical effects that the heating and cooling rates of ammonium perchlorate powder are relatively fast during the drying process of ammonium perchlorate, the drying uniformity is good, the drying efficiency is high, and the ammonium perchlorate powder does not come into contact with natural air before sub-packaging.

[0084] Embodiment Two

[0085] In order to further facilitate the heating and cooling of ammonium perchlorate powder, in this embodiment of the present application, the structure of the elastic partition membrane 200 is optimized on the basis of the above embodiment, and a hot liquid circulation component 250 is added. Specifically:

[0086] As Figure 4 shown, the elastic partition membrane 200 is a double-layer structure, which includes a top membrane 230 and a bottom membrane 240. Both the top membrane 230 and the bottom membrane 240 are elastic membranes made of rubber material; the edges of the top membrane 230 and the bottom membrane 240 are fixed on the inner wall of the housing 100 and the positioning ring 220; the space between the top membrane 230 and the bottom membrane 240 is filled with liquid; the hot liquid circulation component 250 is a combination of a liquid pump, a liquid temperature adjustment component and a liquid storage tank. The liquid pump is used to control the liquid circulation between the liquid in the space between the top membrane 230 and the bottom membrane 240 and the liquid in the liquid storage tank, so as to control the temperature of the top membrane 230 and facilitate the heating and cooling of ammonium perchlorate powder.

[0087] Under normal conditions, the distance between the top membrane 230 and the bottom membrane 240 is greater than 5 cm.

[0088] For the convenience of raising ammonium perchlorate powder to assist in its drying, preferably, as Figure 5As shown, a deformation magnet group 260 is provided between the top film 230 and the bottom film 240; the deformation magnet group 260 is a combination of multiple sheet-shaped electromagnets, and the sheet-shaped electromagnets are evenly distributed on the bottom surface of the top film 230 and the top surface of the bottom film 240; and the electromagnets on the bottom surface of the top film 230 and the electromagnets on the top surface of the bottom film 240 correspond one by one; during the drying process, the deformation magnet group 260 operates, causing the top film 230 and the bottom film 240 to continuously vibrate, thereby intermittently lifting the ammonium perchlorate powder.

[0089] Preferably, the thickness of the bottom film 240 is more than 1.5 times the thickness of the top film 230, and it is less likely to deform compared to the top film 230.

[0090] Considering that during the drying process, along with the elastic separator membrane 200 continuously accumulating and releasing elastic potential energy (constantly rising and falling under the action of the pulling assembly 500), most of the time, part of the powder will fall on the elastic separator membrane 200, and part of the powder will diffuse in the drying space. The powder falling on the elastic separator membrane 200 will gather at the position near the center of the elastic separator membrane 200 due to its own weight (at this time, the elastic separator membrane 200 is pulled into an inverted cone shape). Then, when the elastic separator membrane 200 releases elastic potential energy, it will bounce the powder on itself. The bounced powder tends to form clusters and is not sufficiently dispersed; preferably, as Figure 6 shown, when the deformation magnet group 260 operates, under the action of magnetic force, multiple annular grooves are formed on the top film 230; these grooves will accumulate a certain amount of powder, making the powder on the top film 230 more dispersed when the elastic separator membrane 200 releases elastic potential energy, and thus more conducive to drying.

[0091] Embodiment III

[0092] In order to make the powder more dispersed when the elastic separator membrane 200 ejects the powder, thus facilitating the drying process, as Figure 7 shown, preferably, the pulling assembly 500 further includes a positioning block 540 and an annular guide rail 550; the positioning block 540 is slidably positioned on the positioning ring 220 and rotates around the axis of the positioning ring 220; the annular guide rail 550 is annular and fixed on the inner wall of the sub-packaging space, and its axis coincides with the axis of the housing 100; the pulling winch 510 is slidably positioned on the annular guide rail 550 and slides along the annular guide rail 550; one end of the pulling rope 520 is wound and positioned on the pulling winch 510, and the other end is fixed on the positioning ring 220; during the drying process, the pulling winch 510 continuously slides, and the pulling angle is different when pulling, thus facilitating the dispersion of the powder (the powder is ejected in different directions).

[0093] Preferably, during the sliding of the pulling winch 510, when the deformation magnet group 260 operates, multiple annular grooves are formed on the top film 230.

[0094] Preferably, as Figure 8 shown, a side-mounted ejection bladder 700 is fixed on the side wall of the drying space. The side-mounted ejection bladder 700 is an elastic bladder made of rubber and is generally tubular in shape; the axis of the side-mounted ejection bladder 700 coincides with the axis of the housing 100; the powder ejected by the elastic partition membrane 200 impacts the side-mounted ejection bladder 700 and then rebounds, for secondary dispersion.

[0095] Preferably, the side-mounted ejection bladder 700 is provided with an air inlet and outlet, and the amount of gas inside is adjustable (the elastic force of the side-mounted ejection bladder 700 is different with different amounts of gas).

[0096] Preferably, as Figure 9 shown, the gas input component 410 of the material lifting component 400 pumps gas into the side-mounted ejection bladder 700. The number of the injection holes 440 is multiple, and they are all positioned on the side-mounted ejection bladder 700; when drying, the gas ejected from the injection holes 440 assists in dispersing the lifted powder.

[0097] Preferably, as Figure 10 shown, a control magnet group 710 is fixed inside the side-mounted ejection bladder 700. The control magnet group 710 is a combination of multiple electromagnetic iron sheets; the electromagnetic iron sheets are positioned on the two inner side walls of the side-mounted ejection bladder 700, and the electromagnetic iron sheets on the two inner side walls correspond to each other one by one; when drying, the control magnet group 710 operates, and the electromagnetic iron sheets are alternately powered on and off. At this time, the ejection direction of the injection holes 440 keeps changing, agitating the powder in the drying space.

[0098] Preferably, as Figure 11 shown, the side-mounted ejection bladder 700 is a combination of multiple longitudinally arranged strip-shaped elastic bladders. The injection holes 440 are positioned on different strip-shaped elastic bladders, and the amount of gas in different strip-shaped elastic bladders can be controlled by the control unit, so as to control the ejection direction and ejection force of the injection holes 440.

[0099] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An ammonium perchlorate drying process, characterized in that: It is equipped with a drying device, which includes a hollow cylindrical shell, an elastic partition membrane, a plugging component, a material lifting component for making the powder inside the drying space rise by blowing air, a pulling component with a hoisting structure as the main body, a bagging component located in the packaging space, and a bearing pipe body; a raw material input pipe and a vacuum suction component are provided at the top of the shell, and an output channel and a gas pumping component are provided on the side wall; The elastic partition membrane is a rubber material elastic membrane, fixed on the inner wall of the shell and located near the center of the shell; it divides the inner space of the shell into a drying space and a packaging space; a central hole is provided on the elastic partition membrane, and a positioning ring with an internal electromagnet is fixed on the central hole; The drying device further includes a hot liquid circulation component; The elastic partition membrane is a double-layer structure, which includes a top membrane and a bottom membrane, and both the top membrane and the bottom membrane are rubber material elastic membranes; The edges of the top membrane and the bottom membrane are fixed on the inner wall of the shell and on the positioning ring; The space between the top membrane and the bottom membrane is filled with liquid; the hot liquid circulation component is a combination of a liquid pump, a liquid temperature regulating component and a liquid storage tank. The liquid pump is used to control the liquid circulation between the liquid in the space between the top membrane and the bottom membrane and the liquid in the liquid storage tank, and then control the temperature of the top membrane, so as to facilitate the heating and cooling of ammonium perchlorate powder; The steps are as follows: 1) Continuously inject inert gas at 65 to 75 degrees into the drying space; 2) Transport a fixed amount of ammonium perchlorate powder to be dried into the drying space of the drying device; 3) Control the operation of the vacuum suction component to make the vacuum degree in the drying space reach 93.3 - 98.6 kPa and maintain it; 4) Control the operation of the pulling component to eject the powder on the elastic partition membrane; 5) According to the actual drying demand and the drying degree of the powder to be dried, continuously operate the drying device for 0.2 to 0.8 hours; after drying, pump cold air into the drying space; pump inert gas into the packaging space 3 minutes before drying is completed; 6) Control the central hole to be exposed; 7) Control the operation of the pulling component to pull down the positioning ring, and the powder pours into the bearing pipe body under the influence of its own weight; 8) Bag the powder in the packaging space.

2. The ammonium perchlorate drying process according to claim 1, characterized in that: The material lifting component includes a gas input component, a temperature regulating component and an air delivery ring; the gas input component is used to pump dry inert gas and is an air pump; The temperature regulating component is positioned on the gas input component and is used to adjust the temperature of the gas output from the gas input component; The air delivery ring is fixed on the side wall of the shell and serves as a gas channel; A plurality of injection holes A are evenly distributed in a ring shape at a position on the shell close to the air delivery ring, and the injection holes A are communicated with the air delivery ring; The injection holes A are located above the elastic partition membrane and the distance between the injection holes A and the elastic partition membrane is less than 0.8 meters; The gas ejected from the injection holes A blows towards the drying space.

3. The ammonium perchlorate drying process according to claim 2, characterized in that: The included angle between the length direction of the injection hole A and the connection line between the injection hole A and the axis of the shell is 30 to 75 degrees, and the ejected air flow will converge into a spiral shape.

4. The ammonium perchlorate drying process according to claim 1, characterized in that: A deformation magnet group is provided between the top membrane and the bottom membrane; The deformation magnet group is a combination of multiple sheet-shaped electromagnets, and the sheet-shaped electromagnets are evenly distributed on the bottom surface of the top membrane and the top surface of the bottom membrane; Moreover, the electromagnets on the bottom surface of the top film correspond one by one to the electromagnets on the top surface of the bottom film; during the drying process, the deformation magnet group operates, causing the top film and the bottom film to continuously vibrate, thereby intermittently lifting the ammonium perchlorate powder.

5. The ammonium perchlorate drying process according to claim 4, characterized in that: When the deformation magnet group operates, under the action of magnetic force, a plurality of annular grooves are formed on the top film; these grooves will accumulate a certain amount of powder, so that when the elastic separation film releases elastic potential energy, the powder on the top film will be ejected more dispersedly.

6. The ammonium perchlorate drying process according to claim 5, characterized in that: The pulling component includes a pulling winch and a pulling rope; it also includes a positioning block and an annular guide rail; The positioning block is slidably positioned on the positioning ring and rotates around the axis of the positioning ring; the annular guide rail is annular and fixed on the inner wall of the dispensing space, and its axis coincides with the axis of the housing; The pulling winch is slidably positioned on the annular guide rail and slides along the annular guide rail; one end of the pulling rope is wound and positioned on the pulling winch, and the other end is fixed on the positioning block; During the drying process, the pulling winch keeps sliding, and the pulling angle is different when pulling, so as to facilitate the dispersion of the powder.

7. The ammonium perchlorate drying process according to claim 6, wherein: A side-mounted ejection bladder is fixed on the side wall of the drying space. The side-mounted ejection bladder is an elastic bladder made of rubber and is generally tubular; the axis of the side-mounted ejection bladder coincides with the axis of the housing; the powder ejected by the elastic separation membrane impacts the side-mounted ejection bladder and then is bounced back for secondary dispersion.

8. The ammonium perchlorate drying process according to claim 7, wherein: The gas input component of the material lifting component pumps gas into the side-mounted ejection bladder. The number of injection holes B is multiple, and they are all positioned on the side-mounted ejection bladder; during drying, the gas ejected from the injection holes B assists in dispersing the lifted powder.

9. The ammonium perchlorate drying process according to claim 8, characterized in that: A control magnet group is fixed inside the side-mounted ejection bladder. The control magnet group is a combination of multiple electromagnet sheet bodies; the electromagnet sheet bodies are positioned on the two inner side walls of the side-mounted ejection bladder, and the electromagnet sheet bodies on the two inner side walls correspond one by one; during drying, the control magnet group operates, and the electromagnet sheet bodies are alternately powered on and off. At this time, the ejection direction of the injection holes B keeps changing, stirring the powder in the drying space.

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