Preparation process and system for aerosol gas-producing agent

Abstract

A preparation process and system for an aerosol gas-producing agent, the system mainly comprising a raw material preparation system, a material mixing system, a granulation system, a drying system, a

Description

[0001] The present disclosure belongs to the technical field of aerosol gas-producing agent preparation, and particularly relates to a preparation process and system for an aerosol gasproducing agent. BACKGROUND

[0002] The aerosol gas-producing agent is a fire-extinguishing agent developed by our company. At present, full-line automated production has not been achieved. The preparation process roughly includes raw material preparation, raw material mixing, agent granulation, agent drying, agent column compressing, agent slicing, and other processes. Each process is conducted in a separate workshop, without a full-line connection or automated production. Consequently, the production efficiency is relatively low, which cannot meet the order requirements. After searching, it is found that the technologies disclosed in this field are all preparation processes or equipment for the individual process, failing to realize full-line automated production and featuring a low degree of automation. SUMMARY

[0003] In view of the technical problems existing in the background art, a preparation process and system for an aerosol gas-producing agent provided by the present disclosure can realize automated production, including raw material crushing, adhesive preparation, feeding, mixing, granulation, diving, screening, weighing and barrel filling, palletizing, tableting, compressing, and logistics transportation. Except for manual operations such as the palletizing of raw materials, conveying of raw materials to designated locations, pallet replacement, tablet barrel replacement, and packing of agent columns, all other process operations of the production line are driven by cylinders or explosion-proof motors. The operations are simple, practical, and reliable.

[0004] To solve the above technical problems, the present disclosure adopts the following technical solution: A preparation process for an aerosol gas-producing agent includes the following steps: Step 1, preparation of raw materials, which include resin, methanol, an oxidizer, and a reducing agent; placing the resin into a resin temporary storage and weighing device, the methanol into the methanol elevated tank, the oxidizer into the oxidizer temporary storage and weighing device, and the reducing agent into the reducing agent temporary storage and weighing device; step 2, mixing the raw materials: 1) mixing the resin with methanol to prepare an adhesive; 2) crushing the oxidizer; and 3) weighing the oxidizer and the reducing agent, and performing dry mixing on the weighed oxidizer and reducing agent; after the oxidizer is crushed, storing the crushed oxidizer in the oxidizer temporary storage and weighing device, where the oxidizer includes potassium nitrate and strontium nitrate, and the reducing agent includes melamine and dicyandiamide; step 3, adding the adhesive into the mixture of the oxidizer and the reducing agent, and performing wet mixing to prepare a wet agent; step 4, adding the wet agent into a granulator for granulation; step 5, allowing the granulated agent to pass through a collection hopper and fall onto a lifting conveyor belt, and conveying the granulated agent by the lifting conveyor belt to a horizontal vibratory fluidized bed for drying; step 6, cooling the dried agent, conveying the cooled agent to a crushing device via a cooling belt, dropping the crushed agent into a screening device for screening, dropping the screened agent onto a barrel filling belt, and conveying the screened agent rearward; step 7, weighing the qualified screened agent at an agent filling station, and performing barrel filling after the completion of weighing; Specifically, the barrel is placed on an empty pallet on a conveyor line by a truss manipulator, and a lid picking-and-placing device is used to remove the barrel lid; the barrel is conveyed to a position below a discharge outlet of the oscillating granulator; a weighing device jacking cylinder drives weighing sensors and the barrel to move upward together to prepare for barrel filling; barrel filling is performed while weighing, and when the weight of the agent in the barrel reaches a set value, feeding is stopped; a conveyor line transfer device transfers the filled barrel onto another conveyor line, and then the task of barrel filling of a next empty barrel is performed; step 8, conveying agent-filled barrels to a pressing room, which is used to compress the loose agent into agent columns, and conveying the empty barrels back to the agent filling station in step 7; step 9, conveying the agent columns to a tableting machine, and performing tableting treatment on the agent columns; and step 10, packaging tablets to complete the preparation process.

[0005] The agent-filled barrels are conveyed to a pressing room, and the agent is poured into a hopper; an agent filling main unit automatically weighs and adds the agent into a mold; a turntable assembly enables the mold to be transferred between stations; the press compresses the agent into agent columns; and finally, a finished-product conveying mechanism conveys the finished agent columns out of the room. The tableting machine is modified by adding a barrel conveying mechanism and a finished-product conveying mechanism to implement automatic feeding, fill the finished agent tablets into barrels, and convey the agent-filled barrels out of the room.

[0006] Preferably, in step 2, the preparation of the adhesive is required to be performed before the dry mixing, including the following sub-steps: Step 2.1, during the preparation of the adhesive, manually palletizing resin raw material bags on pallets, and then operating a forklift to transport the pallets to pallet storage racks in a designated area according to the types of raw materials to prepare for feeding by a robot; Step 2.2, extracting the methanol required for preparing the adhesive to a methanol elevated tank by means of a vacuum pump under negative pressure, after the elevated tank is full, starting to add a quantitative amount of methanol into adhesive preparation tanks, where methanol is extracted twice in total, and the methanol is metered by means of a flowmeter; and Step 2.3, picking up one bag of resin each time by using a feeding robot, opening the bag above a feed inlet (a bag opening blade is mounted above a feed hopper) of a resin temporary storage and weighing device, using a vibratory feeding mechanism to add the material into a metering hopper while weighing, stopping feeding when the weight reaches a set value, starting a vacuum feeder to feed the resin raw material in the metering hopper into the corresponding adhesive preparation tank, at the time, starting a stirring paddle of the adhesive preparation tank, and introducing hot water into a jacket of the preparation tank to start circulation for temperature control. The two adhesive preparation tanks share one vacuum feeder, and feeding switching between the two tanks is realized by a directional valve.

[0007] Step 2.4, manually palletizing oxidizer raw material bags and reducing agent raw material bags required for production on pallets, then manually operating the forklift to transport the pallets to pallet storage racks in a designated area according to the types of raw materials to prepare for feeding by the robot; step 2.5, picking up one bag of an oxidizer raw material each time by using the feeding robot, opening the bag above a feed hopper (a bag opening blade is mounted) of the crushing device, feeding the raw material into the hopper, placing the empty bag into a packaging bag collection tank, pre-crushing the raw material, using an explosion-proof screw feeder to feed the precrushed raw material into a pulverizer, and after pulverization, allowing the pulverized raw material to fall into a storage hopper below; step 2.6, conveying the pulverized material into an oxidizer temporary storage and weighing device by means of a vacuum feeder, starting the vibratory feeding mechanism to feed the material into the metering hopper, stopping feeding when the weight reaches a set value, and starting a vacuum feeder of a mixing system to feed the raw material in the metering hopper into a high-efficiency mixer; and step 2.7, omitting a pulverizing process for the reducing agent, conveying the reducing agent into a reducing agent temporary storage and weighing device by means of the vacuum feeder, starting the \ ibratory feeding mechanism to feed the material into the metering hopper, stopping feeding when the weight reaches a set value, starting the vacuum feeder of the mixing system to feed the raw material in the metering hopper into a high-efficiency mixer to mix the reducing agent with the oxidizer.

[0008] Preferably, in step 2.7, a dedicated vacuum feeder is used for the oxidizer and a dedicated vacuum feeder is used for the reducing agent so as to avoid mixing of raw materials in a feed pipeline; after dry mixing is completed, a discharge valve of a first mixer is opened to discharge all materials into a second mixer; and the first mixer is then recharged to perform dry mixing of a next batch.

[0009] Preferably, in step 3, after the dry mixing is completed, a feeding pump is started to feed the adhesive into the second mixer via a pipeline while metering; after the adhesive is added, wet mixing is performed; and after the wet mixing is completed, a discharge valve of the second mixer is opened for discharging.

[0010] Preferably, in step 4, an oscillating granulator is used for granulation, and the granulation process is as follows: the agent is added into the oscillating granulator for oscillating granulation; the discharge speed is controlled by adjusting an opening degree of the discharge valve of the second mixer to realize discharging while granulating.

[0011] Preferably, in step 5, thermal insulation is performed for an upper box body and a lower box body of the vibratory fluidized bed, and thermal insulation is performed for an air supply pipeline and an air extraction pipeline of the vibratory fluidized bed; methanol concentration detection sensors are arranged inside the box bodies to monitor the methanol concentration in the box bodies, and transmit detection signals remotely to an automatic control system; when the concentration exceeds a set threshold, the system alarms and interlocks to stop feeding and stop hot air supply; and the drying temperature is 65-70 °C.

[0012] Preferably, a preparation system for the preparation process for an aerosol gas-producing agent mainly includes a raw material preparation system, a mixing system, a granulation system, a drying system, a screening system, a barrel filling system, an agent filling and compressing system, and a tableting system, and further includes a conveying system, a vacuum system, a hot water system, a pipeline valve metering system, a dehumidification system, an exhaust and dust removal system, a pneumatic control system, a video monitoring system, an explosionproof wired intercom system, a compressed air system, a computer management system, an automatic control system, an equipment and device integration system, an information acquisition system, and the like.

[0013] The raw material preparation system includes a resin temporary storage and weighing device, a vacuum feeder, an adhesive preparation tank, a methanol elevated tank, an oxidizer temporary storage and weighing device, a reducing agent temporary storage and weighing device, a pulverizer, an oxidizer crushing device, an explosion-proof screw feeder, a feeding robot, raw material pallets, pallet storage racks, an explosion-proof electric forklift, a packaging bag collection tank, a wet-type dust collector, an isolation window, and methanol concentration sensors; the raw material preparation system is used to implement weighing, temporary storage, and pulverization of raw materials; the mixing system includes a high-efficiency mixer, vacuum feeders, and a steel platform, and the mixing sy stem is used to implement dry mixing and wet mixing of raw materials; the granulation system includes an oscillating granulator and a lifting conveyor belt, and the granulation system is used to prepare a wet agent into a granulated agent and convey the granulated agent to the screening system; the drying system includes a horizontal vibratory fluidized bed, a drying and feeding belt, a cooling belt, a cooling exhaust device, an explosion-proof axial-flow fan, and methanol concentration detection sensors, and the drying system is used to implement online drying of the granulated agent; the screening system includes a crushing device, an oscillating granulator, a vibrating screen, and a pneumatic explosion-proof dust collector, and the screening system is used to implement automatic screening of the dried and cooled agent; the weighing and barrel filling system includes a barrel filling belt, a weighing device, a truss manipulator, a pallet positioning device, a lid pi eking-and-placing device, barrels, and finished-product pallets, and the weighing and barrel filling system is used to implement automatic weighing and barrel filling of the screened qualified agent; the conveying system includes a barrel transfer device, a lifter, a fire insulation window, and a conveyor belt line, and the conveying system is used to convey the agent-filled barrels to a pressing room and a tableting room, to convey empty barrels back to an agent filling station, and to convey finished agent columns from the pressing room and the tableting room to a packing room for manual packing; the agent filling and compressing system includes a barrel conveying mechanism, a barrel overturning mechanism, an agent filling main unit, a press, a turntable assembly, and a finished-product conveying mechanism, and the agent filling and compressing system is used to compress the granulated agent into agent columns; and the tableting system is obtained by modifying a tableting machine, includes an additional barrel conveying mechanism and an additional finished-product conveying mechanism, and is used to implement automatic feeding, fill the finished agent tablets into barrels, and convey the agent-filled barrels out of the room.

[0014] Preferably, the lid picking-and-placing device in the barrel filling system includes a gantry frame; a translation cylinder and slide rails are disposed at atop of the gantry frame, the translation cylinder is used to drive a lifting cylinder to move, the lifting cylinder is in sliding fit with the slide rails, the lifting cylinder is used to drive a gripper to move up and down, and the gripper is used to grip a barrel lid.

[0015] Preferably, the barrel transfer device includes an accelerated conveyor chain; a pallet is placed on the accelerated conveyor chain, and the pallet is used to carry a barrel; the lid picking-and-placing device is disposed above the accelerated conveyor chain; and a barrel jacking and translation device is disposed at a bottom of the accelerated conveyor chain, and the barrel jacking and translation device is located below the pallet.

[0016] Preferably, the barrel overturning mechanism includes a clamping device and an overturning driving device; the clamping device includes two symmetrically arranged arcshaped clamping plates, the arc-shaped clamping plates are connected to rotating rods, convex ribs are provided on an outer wall of each rotating rod, each rotating rod is connected to a telescopic rod of a clamping driving cylinder through a connecting cylinder, and each rotating rod is in rotating fit with the telescopic rod of the corresponding clamping driving cylinder; the overturning driving device is used to drive the rotating rods to rotate; tire overturning driving device includes sliding sleeves sleeved on the rotating rods; each sliding sleeve is provided with a through hole and sliding grooves, the sliding grooves are matched with the convex ribs, the sliding sleeves are connected to steering rods, and the steering rods are hinged to telescopic rods of corresponding overturning driving cylinders.

[0017] The present disclosure can achieve the following beneficial effects: the present disclosure can realize automated production including raw material crushing, adhesive preparation, feeding, mixing, granulation, drying, screening, weighing and barrel filling, palletizing, tableting, compressing, and logistics transportation; except for manual operations such as the palletizing of raw materials, conveying of raw materials to designated locations, pallet replacement, tablet barrel replacement, and packing of agent columns, all other process operations of the production line are driven by cylinders or explosion-proof motors; and the operations are simple, practical, and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present disclosure is to be described further in detail below with reference to the drawings and embodiments: FIG. 1 is a flowchart of a preparation process for an aerosol gas-producing agent according to the present disclosure; FIG. 2 is a plane layout view of a preparation system for the preparation process for an aerosol gas-producing agent according to the present disclosure; FIG. 3 is a structural diagram of a raw material preparation system according to the present disclosure; FIG. 4 is a structural diagram of a temporary- storage and weighing device according to the present disclosure; FIG. 5 is a weighing principle diagram of the temporary storage and weighing device according to the present disclosure; FIG. 6 is a connection structure diagram of a first plate and a second plate of the temporary storage and weighing device according to the present disclosure; FIG. 7 is a three-dimensional structure diagram of a barrel transfer device according to the present disclosure; FIG. 8 is a three-dimensional structure diagram of a barrel jacking and translation device according to the present disclosure; FIG. 9 is a schematic structural diagram of a barrel overturning mechanism according to the present disclosure; FIG. 10 is a first driving principle diagram of an overturning driving device according to the present disclosure; FIG. 11 is a second driving principle diagram of the overturning driving device according to the present disclosure.

[0019] In the figures: accelerated conveyor chain 1, pallet 2, gantry frame 301, translation cylinder 302, lifting cylinder 303, gripper 304, base 401, jacking cylinder 402, belt transmission mechanism 403, gear motor 403.1, guide rod 404, arc-shaped clamping plate 501, rotating rod 502, convex rib 503, connecting cylinder 504, clamping driving cylinder 505, sliding sleeve 506, sliding groove 507, steering rod 508, overturning driving cylinder 509, barrel 6, resin temporary storage and weighing device 7, temporary storage hopper 701, vibratory feeding mechanism 702, electromagnetic vibrator 702.1, temporary7 storage hopper frame 703, yveighing sensor 704, metering hopper 705, discharge valve 706, port docking mechanism 707, weighing mechanism frame 708, side plate 709, positioning rod 710, first plate 711, second plate 712, rotation driving device 713, oxidizer temporary storage and weighing device 8, reducing agent temporary storage and weighing device 9, feeding robot 10, raw material pallet 11, raw material bag 12; raw material preparation system A, mixing system B, granulation system C, drying system D, screening system E, barrel filling system F, agent filling and compressing system G, and tableting system H. DETAILED DESCRIPTION OF EMBODIMENTS

[0020] Example 1 A preferred embodiment is illustrated in FIGs. 1 to 11. A preparation process for an aerosol gas producing agent is provided as follows: Step 1, preparation of raw materials, which include resin, methanol, an oxidizer, and a reducing agent; the resin, the methanol, the oxidizing agent, and the reducing agent are temporarily stored and accurately weighed by means of a resin temporary storage and weighing device, a methanol elevated tank, an oxidizer temporary storage and weighing device, and a reducing agent temporary storage and weighing device, respectively.

[0021] The resin temporary storage and weighing device for the resin includes a temporary storage hopper, a metering hopper, a weighing sensor, a vibratory feeding mechanism, a discharge valve, a port docking mechanism, a frame, and the like. A feed inlet of the vibratory7 feeding mechanism is in flexible connection with a lower outlet of the temporary storage hopper, and a discharge outlet of the vibratory7 feeding mechanism is in flexible connection with a feed inlet of the metering hopper. A material passage of the vibratory7 feeding mechanism is a sealed structure. The vibratory feeding mechanism is driven to vibrate by an electromagnetic vibrator to achieve rapid feeding and slow accurate feeding. The metering hopper is mounted on an explosion-proof weighing sensor to enable simultaneous feeding and weighing. Specifically, the temporary storage and weighing device includes a temporary7 storage hopper frame. A temporary storage hopper is arranged at the top of the temporary7 storage hopper frame. A vibratory feeding mechanism is disposed at the bottom of the temporary storage hopper. The vibratory feeding mechanism is connected to the metering hopper and used for feeding the material to the metering hopper. A weighing sensor is disposed at the top of the metering hopper. A discharge valve is disposed at the bottom of the metering hopper. A port docking mechanism is disposed at the bottom of the discharge valve. The metering hopper is supported by a weighing mechanism frame. The vibratoiy feeding mechanism includes a conveying pipeline. An electromagnetic vibrator is disposed on the conveying pipeline. Rapid feeding and slow accurate feeding are achieved by frequency adjustment.

[0022] Step 2, Mix the raw materials: 1) Mix the resin with methanol to prepare an adhesive; 2) Crush the oxidizer; and 3) Weigh the oxidizer and the reducing agent, and perform dry mixing on the weighed oxidizer and reducing agent; The adhesive is prepared using an adhesive preparation tank, where the adhesive preparation tank includes a manhole and a feed inlet; a lower tank body is jacketed and provided with a hot water inlet and outlet, a temperature sensor, and a pressure-level gauge, and the adhesive preparation tank uses an anchor-type stirring paddle; Step 3, Add the adhesive to the mixture of the oxidizer and the reducing agent and perform wet mixing to prepare a wet agent; the added oxidizer, reducing agent, and adhesive are mixed uniformly using a high-efficiency mixer to meet the requirements of the granulation process; the high-efficiency mixer includes main components, such as a polished tank body, stirring paddle, and cutter, to ensure that the material is not likely to adhere to surfaces, and all surfaces have smooth curved transitions, are easy to clean, and have no dead zones. A stirring shaft and the tank body are pneumatically sealed to effectively prevent dust ingress and avoid cross-contamination; an exhaust port is provided on a tank lid, and can be cleaned with water or a solvent after completion of the production.

[0023] Step 4, Add the wet agent into a granulator for granulation; The agent is fed into a guide hopper of the oscillating granulator, which is then started to perform oscillating granulation. After granulation, the agent passes through a collection hopper, falls onto a lifting conveyor belt, and is conveyed by the lifting conveyor belt to a horizontal vibratory fluidized bed for drying. The oscillating granulator includes a hopper, a collection hopper, a screen, a drum, an explosion-proof motor reducer, a frame, a protective cover, and the like. The explosion-proof motor reducer drives a crank-link mechanism to reciprocally oscillate a horizontal rotor. The screen is arranged below the rotor, and a screen tensioning device has an automatic pre-tensioning function to ensure the screen is tightly attached to the rotor for granulation. The screen is easily detachable. The number of drum rotations may be set and adjusted to control the granule size and density to a certain extent. The transparent protective cover is disposed at a material receiving point between the discharge outlet of the oscillating granulator and a receiving conveyor belt, and a camera is installed to monitor the discharge status of the oscillating granulator.

[0024] Step 5, Allow the granulated agent to pass through a collection hopper and fall onto a lifting conveyor belt, and convey the granulated agent by the lifting conveyor belt to the horizontal vibratory fluidized bed for drying; thermal insulation is performed for an upper box body and a lower box body of the vibratory fluidized bed, and thermal insulation is performed for an air supply pipeline and an air extraction pipeline of the vibratory fluidized bed; methanol concentration detection sensors are arranged at appropriate positions inside the box bodies, can be replaced easily and monitor the methanol concentration in the box bodies, and can transmit detection signals remotely to an automatic control system; when the concentration exceeds a set threshold, the system alarms and interlocks to stop feeding and stop hot air supply.

[0025] Step 6, Cool the dried agent, convey the cooled agent to a crushing device via a cooling belt, drop the crushed agent into a screening device for screening, drop the screened agent onto a barrel filling belt, and convey the screened agent rearward; Step 7, Weigh the qualified screened agent at an agent filling station, and perform barrel filling after the completion of weighing; Step 8, Convey agent-filled barrels to a pressing room, which is used to compress the loose agent into agent columns, and convey the empty barrels back to the agent filling station in step 7; Step 9, Convey the agent columns to a tableting machine, and perform tableting treatment on the agent columns; and Step 10, Package tablets to complete the preparation process.

[0026] Preferably, in step 2, the preparation of the adhesive is required to be performed before the dry mixing, including the following sub-steps: Step 2.1, during the preparation of the adhesive, manually palletize resin raw material bags on pallets, and then operate a forklift to transport the pallets to pallet storage racks in a designated area according to the types of raw materials to prepare for feeding by a robot; Step 2.2, extract the methanol required for preparing the adhesive to a methanol elevated tank by means of a vacuum pump under negative pressure, after the elevated tank is full, and start to add a quantitative amount of methanol into adhesive preparation tanks, where methanol is extracted twice in total, and the methanol is metered by means of a flowmeter; Step 2.3, pick up one bag of resin by a feeding robot each time, open the bag above the feed inlet of the resin temporary storage and weighing device; add the material into the metering hopper by tire vibratory feeding mechanism while being weighed simultaneously, and stop feeding when the weight reaches a set value; then, start the vacuum feeder to transfer the resin raw material in the metering hopper into the corresponding adhesive preparation tank; at this time, start the stirring paddle of the adhesive preparation tank, and feed and circulate hot water through the jacket of the preparation tank for temperature control.

[0027] Step 2.4, manually palletize oxidizer raw material bags and reducing agent raw material bags required for production on pallets, then manually operate the forklift to transport the pallets to pallet storage racks in a designated area according to the types of raw materials to prepare for feeding by the robot; Step 2.5, pick up one bag of an oxidizer raw material each time by the feeding robot, open the bag above a feed hopper of the crushing device, feed the raw material into the hopper, place the empty bag into a packaging bag collection tank, pre-crush the raw material, use an explosionproof screw feeder to feed the pre-crushed raw material into a pulverizer, and after pulverization, allow the pulverized raw material to fall into a storage hopper below; step 2.6, convey the pulverized material into the oxidizer temporary storage and weighing device by means of a vacuum feeder, start the vibratory feeding mechanism to feed the material into the metering hopper, stop feeding when the weight reaches a set value, and start a vacuum feeder of a mixing system to feed the raw material in the metering hopper into a high-efficiency mixer; and step 2.7, omit a pulverizing process for the reducing agent, convey the reducing agent into the reducing agent temporary storage and weighing device by means of the vacuum feeder, start the vibratory feeding mechanism to feed the material into the metering hopper, stop feeding when tire weight reaches a set value, start the vacuum feeder of the mixing system to feed the raw material in the metering hopper into the high-efficiency mixer to mix the reducing agent with the oxidizer.

[0028] Further, in step 2.7, a dedicated vacuum feeder is used for the oxidizer and a dedicated vacuum feeder is used for the reducing agent so as to avoid mixing of raw materials in a feed pipeline; after dry mixing is completed, a discharge valve of a first mixer is opened to discharge all materials into a second mixer; and the first mixer is then recharged to perform dry mixing of a next batch.

[0029] Further, in step 3, after the dry7 mixing is completed, a feeding pump is started to feed the adhesive into the second mixer via a pipeline while metering; after the adhesive is added, wet mixing is performed; and after the wet mixing is completed, a discharge valve of the second mixer is opened for discharging.

[0030] Further, in step 4, an oscillating granulator is used for granulation, and the granulation process is as follows: the agent is added into the oscillating granulator for oscillating granulation; the discharge speed is controlled by adjusting an opening degree of the discharge valve of the second mixer to implement granulating while discharging.

[0031] Further, in step 5, thermal insulation is performed for an upper box body and a lower box body of the vibratory fluidized bed, and thermal insulation is performed for an air supply pipeline and an air extraction pipeline of the vibratory fluidized bed; methanol concentration detection sensors are arranged inside the box bodies to monitor the methanol concentration in the box bodies, and transmit detection signals remotely to an automatic control system; when the concentration exceeds a set threshold, the system alarms and interlocks to stop feeding and stop hot air supply; and the drying temperature is 65-70 °C.

[0032] A preparation system for an aerosol gas-producing agent mainly includes a raw material preparation system, a mixing system, a granulation system, a dry ing system, a screening system, a barrel filling system, an agent filling and compressing system, and a tableting system; 1. The raw material preparation system includes a resin temporary storage and weighing device, a vacuum feeder, an adhesive preparation tank, a methanol elevated tank, an oxidizer temporary storage and weighing device, a reducing agent temporary storage and weighing device, a pulverizer, an oxidizer crushing device, an explosion-proof screw feeder, a feeding robot, raw material pallets, pallet storage racks, an explosion-proof electric forklift, a packaging bag collection tank, a wet-type dust collector, an isolation window, and methanol concentration sensors; the raw material preparation system is used to implement weighing, temporary7 storage, and pulverization of raw materials; and the oxidizer temporary storage and weighing device, the reducing agent temporary storage and weighing device, and the resin temporary storage and weighing device have the same structure and may be collectively referred to as a “temporary storage and weighing device”. The temporary storage and weighing device includes a temporary storage hopper frame 703. A temporary storage hopper 701 is arranged at the top of the temporary storage hopper frame 703. A vibratory feeding mechanism 702 is disposed at the bottom of the temporary storage hopper 701. The vibratory feeding mechanism 702 is connected to a metering hopper 705 and used for feeding the material to the metering hopper. Weighing sensors 704 arc disposed at the top of the metering hopper. A discharge valve 706 is disposed at the bottom of the metering hopper 705. A port docking mechanism 707 is disposed at the bottom of tire discharge valve. The metering hopper is supported by a weighing mechanism frame 708. The temporary storage hopper 701 is used for storing resin, a reducing agent, or an oxidizer. The vibratory feeding mechanism 702 is used for transferring the raw material from the temporary storage hopper 701 to the metering hopper 705. A weighing mechanism is provided in the metering hopper 705 for weighing the raw material.

[0033] Specifically, the vibratory feeding mechanism includes a conveying pipeline. An electromagnetic vibrator 702.1 is disposed on the conveying pipeline. Rapid feeding and slow accurate feeding are achieved by frequency adjustment. Tire weighing sensor is mounted on a side plate 709, which is arranged at the top of the metering hopper. Positioning rods 710 are disposed on the side plate, and the positioning rods 710 are in a sliding fit with a first plate 711. The first plate 711 is connected to a second plate 712 via a rotating shaft, and the second plate is driven to rotate by a rotation driving device 713. The rotation driving device 713 may selectively be a cylinder, which is used for driving the second plate 712 to rotate, and the cylinder and the second plate 712 are integrally mounted. The rotation driving device 713 may selectively be a motor, which drives the second plate to rotate via tire rotating shaft, and the motor and the second plate 712 are integrally mounted. As shown in FIG. 3, the first plate 711 and the second plate 712 are integrally connected, and the entire weight is applied to the weighing sensor 704. The positioning rods 710 penetrate through the first plate 711 to prevent movement of the first plate 711. After each weighing operation, the rotation driving device 713 actuates to discharge the raw material to the bottom of the metering hopper 705. The material is then discharged through the discharge valve 706. A plurality of positioning rods 710 are provided, and the weighing sensor is installed among the positioning rods 710.

[0034] 2. The mixing system includes a high-efficiency mixer, vacuum feeders, and a steel platform, and the mixing system is used to implement dry mixing and wet mixing of raw materials; 3. The granulation system includes an oscillating granulator and a lifting conveyor belt, and the granulation system is used to prepare a wet agent into a granulated agent and convey the granulated agent to the screening system; 4. The diy ing system includes a horizontal vibratory fluidized bed, a diy ing and feeding belt, a cooling belt, a cooling exhaust device, an explosion-proof axial-flow fan, and methanol concentration detection sensors, and the drying system is used to implement on-line drying of the granulated agent; and the drying system includes the horizontal vibratory fluidized bed, the drying and feeding belt, the cooling belt, the cooling exhaust device, the explosion-proof axial-flow fan, and the methanol concentration detection sensors. The horizontal vibratory fluidized bed includes a vibratoiy fluidized bed main unit, a hot-air unit, and a cyclone separator. Thermal insulation is performed for an upper box body and a lower box body of the vibratory fluidized bed, and thermal insulation is performed for an air supply pipeline and an air extraction pipeline of the vibratory fluidized bed; methanol concentration detection sensors are arranged at appropriate positions inside the box bodies, can be replaced easily and monitor the methanol concentration in the box bodies, and can transmit detection signals remotely to an automatic control system; when the concentration exceeds a set threshold, the system alarms and interlocks to stop feeding and stop hot air supply. The drying and feeding belt is made of a corrosion-resistant and anti-static material, and edge baffles are provided on both sides. A frame adopts an aluminum-profile splicing structure or a carbon-steel welded structure. The belt width is 0.5 m, and the belt length is 1 m. The belt length and the lifting height are adjusted and matched according to the devices connected upstream and downstream. The belt is driven by an explosion-proof motor. The cooling belt is made of a corrosion-resistant and anti-static material, and edge baffles are provided on both sides. A frame adopts an aluminum-profile splicing structure or a carbon-steel welded structure. The belt width is 0.5 m, and the belt length is 8 m. The belt length and the lifting height are adjusted and matched according to the devices connected upstream and downstream. The belt is driven by an explosion-proof motor. A transition chute is provided at an initial receiving end of the belt and is in flexible connection with the vibratory fluidized bed to prevent the material from being scattered during tire material dropping process.

[0035] 5. The screening system includes a crushing device, an oscillating granulator, a vibrating screen, and a pneumatic explosion-proof dust collector, and the screening system is used to implement automatic screening of the dried and cooled agent; and the dried and cooled agent is conveyed into the crushing device via the cooling belt, and the crushed agent drops into the oscillating granulator for screening. The vibrating screen is arranged below the discharge outlet of the oscillating granulator. The screened agent passes through the vibrating screen, then drops onto the barrel filling belt and is conveyed rearward. The crushing device is a drum-type high-efficiency crushing structure and includes a crushing mechanism and a frame, and is driven by an explosion-proof motor. A protective structure is provided at an upper feed inlet and an outlet of the cooling belt, and a lower discharge outlet is hermetically connected to the oscillating granulator to prevent dust dispersion.

[0036] 6. The weighing and barrel filling system includes a barrel filling belt, a weighing device, a truss manipulator, a pallet positioning device, a lid picking-and-placing device, barrels, and finished-product pallets, and the weighing and barrel filling system is used to implement automatic weighing and barrel filling of the screened qualified agent; the barrel is placed on an empty pallet on a conveyor line by a truss manipulator, and the lid picking-and-placing device is used to remove a barrel lid; the barrel is conveyed to a position below the discharge outlet of the oscillating granulator; a weighing device jacking cylinder drives the weighing sensor and the barrel to move upward together to prepare for barrel filling; barrel filling is performed while weighing, and when the weight of the agent in the barrel reaches a set value, feeding is stopped; a conveyor line transfer device transfers the filled barrel onto another conveyor line, and then the task of barrel filling of a next empty barrel is performed. After the filled barrel is covered with the lid, the barrel is conveyed rearward to the tablet-compressing or agent-compressing process. When rearward conveying is not required, the truss manipulator removes the barrel from the line and places the barrel onto a pallet, then picks up another empty barrel and puts the empty barrel onto the line for barrel filling. The operation is repeated until all barrels have been filled. When all barrels on the pallets are filled, the system issues an alarm to prompt an operator to operate the forklift to change the pallets and transfer the finished agents into a warehouse.

[0037] The lid picking-and-placing device includes a gantry frame 301; a translation cylinder 302 and slide rails are disposed at a top of the gantry frame 301, the translation cylinder 302 is used to drive a lifting cylinder 303 to move, the lifting cylinder 303 is in sliding fit with the slide rails, the lifting cylinder 303 is used to drive a gripper 304 to move up and down, and the gripper 304 is used to grip a barrel lid. The gantry' frame 301 is used to be arranged around the periphery of an accelerated conveyor chain 1. The gripper 304 may be a pneumatic holder. The gripper 304 is used to hold the barrel lid. The lifting cylinder 303 drives the gripper 304 to move up and down, and the translation cylinder 302 drives the gripper 304 to move laterally. The above process accomplishes the removal of the barrel lid. The process of closing the barrel lid is performed in a reverse manner.

[0038] Hie truss manipulator has a gantry-type structure and is made of carbon steel, and one set of the truss manipulator is configured. The truss manipulator includes stand columns, cross beams, grippers, guide rails, gears and racks, rollers, cylinders, servo motors, reducers, and the like. The servo motor reducer drives the gears to engage with the racks, enabling multi-position stays along X and Y axes. The lifting motion along the Z axis is realized by means of the cylinders, and the grippers are driven by the cylinders to implement gripping. A X-axis grabbing span is 3.5 m, and a Y-axis grabbing span is 5.5 m. In-situ detection switches, over-travel detection switches, and over-travel limit buffer posts are installed at the ends of the guide rails in the X-axis and Y-axis directions to ensure safe operation of the truss manipulator.

[0039] 7. The conveying system includes a barrel transfer device, a lifter, a fire insulation window, and a conveyor belt line, and the conveying system is used to convey the agent-filled barrels to a pressing room and a tableting room, to convey empty barrels back to an agent filling station, and to convey finished agent columns from the pressing room and the tableting room to a packing room for manual packing; The barrel transfer device includes the accelerated conveyor chain 1; a pallet 2 is placed on the accelerated conveyor chain 1, and the pallet 2 is used to carry a barrel; the lid picking-and-placing device is disposed above the accelerated conveyor chain 1; and a barrel jacking and translation device is disposed at the bottom of the accelerated conveyor chain 1. With reference to FIG. 1, the barrel jacking and translation device is located below the pallet 2. The bottom of the pallet 2 may be provided with convex teeth, which engage with the chain of the accelerated conveyor chain 1 to prevent the pallet 2 from sliding.

[0040] The barrel jacking and translation device includes abase 401. A jacking cylinder 402 is disposed at the bottom of the base 401, and the jacking cylinder 402 is used to drive a belt transmission mechanism 403 to move up and down. The belt transmission mechanism 403 includes a frame, a drive belt, and pulleys, and the drive belt is driven to operate by a gear motor 403.1. The barrel jacking and translation device is used to translate the barrel into the pressing room. The jacking cylinder 402 jacks up the pallet 2 and the barrel, and the belt transmission mechanism 403 starts to translate the barrel.

[0041] Guide rods 404 are disposed at the bottom of the frame of tire belt transmission mechanism 403, and the guide rods 404 are in a sliding fit with the base 401. The base 401 is provided with guide holes that are in sliding fit with the guide rods 404, and is used to enhance the stability of the vertical movement of the belt transmission mechanism 403.

[0042] 8. The filling and compressing system includes a barrel conveying mechanism, a barrel overturning mechanism, an agent filling main unit, a press, a turntable assembly, and a finished-product conveying mechanism, and the filling and compressing system is used to compress the granulated agent into agent columns; Specifically, the barrel overturning mechanism includes a clamping device and an overturning driving device; the clamping device includes two symmetrically arranged arc-shaped clamping plates 501, the arc-shaped clamping plates 501 are connected to rotating rods 502, convex ribs 503 are provided on an outer wall of each rotating rod 502, each rotating rod 502 is connected to a telescopic rod of a clamping driving cylinder 505 through a connecting cylinder 504, and each rotating rod 502 is in rotating fit with the telescopic rod of the corresponding clamping driving cylinder 505; the overturning driving device is used to drive the rotating rods 502 to rotate. The two arc-shaped clamping plates 501 are used to hold the barrel. Preferably, inner walls of the arc-shaped clamping plates 501 may be coated with rubber to enhance friction. The connecting cylinder 504 is used to connect the rotating rod 502 and the telescopic rod of the corresponding clamping driving cylinder 505, while allowing the rotating rod 502 to rotate. The connecting cylinders 504 are fixed to the device frame via the base, and similarly, the clamping driving cylinders 505 are also fixed to the device frame.

[0043] The overturning driving device includes sliding sleeves 506 sleeved on the rotating rods 502; each sliding sleeve 506 is provided with athrough hole and sliding grooves 507, the sliding grooves 507 are matched with the convex ribs 503, the sliding sleeves 506 are connected to corresponding steering rods 508, and the steering rods 508 are hinged to telescopic rods of the corresponding overturning driving cylinder 509. Two convex ribs 503 are welded on the outer wall of each rotating rod 502. Two sliding grooves 507 are formed on an inner wall of each sliding sleeve 506. The sliding sleeve 506 is capable of sliding along the rotating rod 502, and is further capable of cooperating with the steering rod 508 and the overturning driving cylinder 509 to drive the rotating rod 502 to rotate. Tail ends of the overturning driving cylinders 509 are connected to the device frame via the rotating shafts.

[0044] One end of each connecting cylinder 504 is connected to the telescopic rod of the corresponding clamping driving cylinder 505 via a tapered bearing, and the other end of the connecting cylinder 504 is fixedly connected to the corresponding rotating rod 502. The tapered bearing is capable of bearing high axial thrust.

[0045] 9. The tableting system is obtained by modifying a tableting machine, which includes an additional barrel conveying mechanism and an additional finished-product conveying mechanism, and is used to implement automatic feeding, fill the finished agent tablets into barrels, and convey the agent-filled barrels out of the room.

[0046] The above embodiments are merely preferred technical solutions of the present disclosure and should not be regarded as limitations on the present disclosure. The scope of protection of the present disclosure shall be defined by the technical solutions recited in the claims, including equivalent replacement solutions of the technical features in the technical solutions defined in the claims. That is, equivalent replacement improvements within this scope also fall within the scope of protection of the present disclosure.

Claims

1. A preparation process for an aerosol gas-producing agent, comprising:step 1. preparation of raw materials: the raw materials comprising resin, methanol, an oxidizer and a reducing agent;step 2, mixing the raw materials:1) mixing the resin with methanol to prepare an adhesive;2) crushing the oxidizer; and3) weighing the oxidizer and the reducing agent, and performing dry' mixing on the weighed oxidizer and reducing agent;step 3, adding the adhesive into the mixture of the oxidizer and the reducing agent, and performing wet mixing to prepare a wet agent;step 4, adding the wet agent into a granulator for granulation;step 5, allowing the granulated agent to pass through a collection hopper and fall onto a lifting conveyor belt, and conveying the granulated agent by the lifting conveyor belt to a horizontal \ ibratory fluidized bed for drying:step 6, cooling the dried agent, conveying the cooled agent to a crashing device via a cooling belt, dropping the crashed agent into a screening device for screening, dropping the screened agent onto a barrel filling belt, and conveying the screened agent rearward;step 7, weighing the qualified screened agent at an agent filling station, and performing barrel filling after the completion of weighing;step 8, conveying agent-filled barrels to a pressing room, which is used to compress the loose agent into agent columns, and conveying the empty barrels back to the agent filling station in step 7;step 9, conveying the agent columns to a tableting machine, and performing tableting treatment on the agent columns; andstep 10, packaging tablets to complete the preparation process.

2. The preparation process for an aerosol gas-producing agent according to claim 1, wherein in step 2, the preparation of the adhesive is required to be performed before the dry mixing, comprising the following sub-steps:step 2.1, during the preparation of the adhesive, manually palletizing resin raw material bags on pallets, and then operating a forklift to transport the pallets to pallet storage racks in a designated area according to the types of raw materials to prepare for feeding by a robot;step 2.2, extracting the methanol required for preparing the adhesive to a methanol elevated tank by means of a vacuum pump under negative pressure, after the elevated tank isfull, starting to add a quantitative amount of methanol into adhesive preparation tanks, where methanol is extracted twice in total, and the methanol is metered by means of a flowmeter;step 2.3, picking up one bag of resin each time by using a feeding robot, opening the bag above a feed inlet of a resin temporary storage and weighing device, using a vibratory feeding mechanism to add the material into a metering hopper while weighing, stopping feeding when the weight reaches a set value, starting a vacuum feeder to feed the resin raw material in the metering hopper into the corresponding adhesive preparation tank, starting a stirring paddle of the adhesive preparation tank, and introducing hot water into a jacket of the preparation tank to start circulation for temperature control;step 2.4, manually palletizing oxidizer raw material bags and reducing agent raw material bags required for production on pallets, then manually operating the forklift to transport the pallets to pallet storage racks in a designated area according to the types of raw materials to prepare for feeding by the robot;step 2.5, picking up one bag of an oxidizer raw material each time by using the feeding robot, opening the bag above a feed hopper of the crushing device, feeding the raw material into the hopper, placing the empty bag into a packaging bag collection tank, pre-crushing the raw material, using an explosion-proof screw feeder to feed the pre-crushed raw material into a pulverizer, and after pulverization, allowing the pulverized raw material to fall into a storage hopper below;step 2.6, conveying the pulverized material into an oxidizer temporary storage and weighing device by means of a vacuum feeder, starting the vibratory feeding mechanism to feed the material into the metering hopper, stopping feeding when the weight reaches a set value, and starting a vacuum feeder of a mixing system to feed the raw material in tine metering hopper into a high-efficiency mixer; andstep 2.7, omitting a pulverizing process for the reducing agent, conveying the reducing agent into a reducing agent temporaiy storage and weighing device by means of the vacuum feeder, starting the vibratory feeding mechanism to feed the material into the metering hopper, stopping feeding when the weight reaches a set value, starting the vacuum feeder of the mixing system to feed the raw material in the metering hopper into the high-efficiency mixer to mix the reducing agent with the oxidizer.

3. The preparation process for an aerosol gas-producing agent according to claim 2, wherein in step 2.7, a dedicated vacuum feeder is used for the oxidizer and a dedicated vacuum feeder is used for the reducing agent so as to avoid mixing of raw materials in a feed pipeline; after dry mixing is completed, a discharge valve of a first mixer is opened to discharge all materials into a second mixer; and the first mixer is then rechaiged to perform dry mixing of a next batch.

4. The preparation process of an aerosol gas-producing agent according to claim 3, whereinin step 3, after the dry mixing is completed, a feeding pump is started to feed the adhesive into the second mixer via a pipeline while metering; after the adhesive is added, wet mixing is performed; and after the wet mixing is completed, a discharge valve of the second mixer is opened for discharging.

5. The preparation process for an aerosol gas-producing agent according to claim 4, wherein in step 4, an oscillating granulator is used for granulation, and the granulation process is as follows: the agent is added into the oscillating granulator for oscillating granulation; the discharge speed is controlled by adjusting an opening degree of the discharge valve of the second mixer to realize discharging while granulating.

6. The preparation process for an aerosol gas-producing agent according to claim 1, wherein in step 5, thermal insulation is performed for an upper box body and a lower box body of the vibratory7 fluidized bed, and thermal insulation is performed for an air supply pipeline and an air extraction pipeline of the vibratory fluidized bed; methanol concentration detection sensors are arranged inside the box bodies to monitor the methanol concentration in the box bodies, and transmit detection signals remotely to an automatic control system; when the concentration exceeds a set threshold, the system alarms and interlocks to stop feeding and stop hot air supply; and the drying temperature is 65-70 °C.

7. A preparation system for the preparation process for an aerosol gas-producing agent according to claim 1, mainly comprising a raw material preparation system, a mixing system, a granulation system, a drying system, a screening system, a barrel filling system, an agent filling and compressing system, and a tableting system;the raw material preparation system comprises a resin temporary storage and weighing device, a vacuum feeder, an adhesive preparation tank, a methanol elevated tank, an oxidizer temporary storage and weighing device, a reducing agent temporary7 storage and weighing device, a pulverizer, an oxidizer crushing device, an explosion-proof screw feeder, a feeding robot, raw material pallets, pallet storage racks, an explosion-proof electric forklift, a packaging bag collection tank, a wet-type dust collector, an isolation window, and methanol concentration sensors; the raw material preparation system is used to implement weighing, temporary storage, and pulverization of raw materials;the mixing system comprises a high-efficiency mixer, vacuum feeders, and a steel platform, and the mixing system is used to implement dry mixing and wet mixing of raw materials;the granulation system comprises an oscillating granulator and a lifting conveyor belt, and the granulation system is used to prepare a wet agent into a granulated agent and convey the granulated agent to the screening system;the drying system comprises a horizontal vibratory fluidized bed, a drying and feeding belt, a cooling belt, a cooling exhaust device, an explosion-proof axial-flow fan, and methanol concentration detection sensors, and the drying system is used to implement online drying ofthe granulated agent;the screening system comprises a crushing device, an oscillating granulator, a vibrating screen, and a pneumatic explosion-proof dust collector, and the screening system is used to implement automatic screening of the dried and cooled agent;the weighing and barrel filling system comprises a barrel filling belt, a weighing device, a truss manipulator, a pallet positioning device, a lid picking-and-placing device, barrels, and finished-product pallets, and the weighing and barrel filling system is used to implement automatic weighing and barrel filling of the screened qualified agent;the conveying system comprises a barrel transfer device, a lifter, a fire insulation window, and a conveyor belt line, and the conveying system is used to convey the agent-filled barrels to a pressing room and a tableting room, to convey empty barrels back to an agent filling station, and to convey finished agent columns from the pressing room and the tableting room to a packing room for manual packing;the agent filling and compressing system comprises a barrel conveying mechanism, a barrel overturning mechanism, an agent filling main unit, a press, a turntable assembly, and a finished-product conveying mechanism, and the agent filling and compressing system is used to compress the granulated agent into agent columns; andthe tableting system is obtained by modifying a tableting machine, comprises an additional barrel conveying mechanism and an additional finished-product conveying mechanism, and is used to implement automatic feeding, fill the finished agent tablets into barrels, and convey the agent-filled barrels out of the room.

8. The preparation system for the preparation process for an aerosol gas-producing agent according to claim 7. wherein the lid picking-and-placing device in the barrel filling system comprises agantiy frame (301); a translation cylinder (302) and slide rails are disposed at atop of the gantry frame (301), the translation cylinder (302) is used to drive a lifting cylinder (303) to move, the lifting cylinder (303) is in sliding fit with the slide rails, the lifting cylinder (303) is used to drive a gripper (304) to move up and down, and the gripper (304) is used to grip a barrel lid.

9. The preparation system for the preparation process for an aerosol gas-producing agent according to claim 8, wherein the barrel transfer device comprises an accelerated conveyor chain (I), a pallet (2) is placed on the accelerated conveyor chain (1), and the pallet (2) is used to carry a barrel; the lid picking-and-placing device is disposed above the accelerated conveyor chain (1); and a barrel jacking and translation device is disposed at a bottom of the accelerated conveyor chain (1), and the barrel jacking and translation device is located below the pallet (2).

10. The preparation system for the preparation process for an aerosol gas-producing agent according to claim 8, wherein the barrel overturning mechanism comprises a clamping device and an overturning driving device; the clamping device comprises two symmetrically arrangedarc-shaped clamping plates (501), the arc-shaped clamping plates (501) are connected to rotating rods (502), convex ribs (503) are provided on an outer wall of each rotating rod (502), each rotating rod (502) is connected to a telescopic rod of a clamping driving cylinder (505) through a connecting cylinder (504), and each rotating rod (502) is in rotating fit with the telescopic rod of the corresponding clamping driving cylinder (505); the overturning driving device is used to drive the rotating rods (502) to rotate; the overturning driving device comprises sliding sleeves (506) sleeved on the rotating rods (502), each sliding sleeve (506) is provided with a through hole and sliding grooves (507), the sliding grooves (507) are matched with the convex ribs (503), the sliding sleeve (506) is connected to a steering rod (508), and the steering rod (508) is hinged to a telescopic rod of an overturning driving cylinder (509).

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