Moisture absorption powder spreading device
By designing a hygroscopic powder spreading device, utilizing ambient air and a dual drying unit, the problems of uneven spreading and increased weight of the warm cloud catalyst were solved, achieving uniform powder spreading and dosage control, and reducing cost and weight.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN ZHONGAN BORUI TECHNOLOGY CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-15
AI Technical Summary
Existing warm cloud catalyst seeding devices suffer from uneven seeding, difficulty in controlling dosage, and easy clumping. Furthermore, the traditional devices carry gas cylinders, increasing the aircraft's payload.
A hygroscopic powder spreading device was designed, which adopts a controllable feeder and piping system, uses ambient air as the fluid medium, and is equipped with dual drying units and heating devices to ensure powder drying and spreading uniformity. Precise spreading is achieved through venturi tubes and nozzles.
It achieves uniform powder application and controllable dosage, reduces agglomeration, lowers device weight, increases single-operation time, and reduces costs.
Smart Images
Figure CN224237137U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of powder spreading technology, and in particular to a hygroscopic powder spreading device. Background Technology
[0002] In the field of artificial rain enhancement, current methods for distributing catalysts mainly include aerial seeding, ground generator seeding, drone seeding, rocket seeding, and anti-aircraft gun seeding. Ground generator, rocket, and anti-aircraft gun seeding methods suffer from drawbacks such as limited impact area, over-reliance on the natural environment, and difficulty in controlling the seeding rate. Furthermore, most existing devices are cold cloud catalyst seeding systems, with limited design options for warm cloud catalyst seeding systems. Commonly used warm cloud catalysts include single catalysts such as bentonite, calcium chloride, ammonium nitrate, and urea, as well as chemically produced mixed catalysts. Their common characteristic is high hygroscopicity, leading to easy water absorption and clumping during seeding, uneven distribution, difficulty in controlling the seeding dosage, and difficulty in controlling the seeding location. Summary of the Invention
[0003] In order to overcome or alleviate one or more of the above technical problems, the purpose of this utility model is to provide a hygroscopic powder spreading device, which has the advantages of uniform spreading, controllable spreading dosage and position, and the device of this utility model is not limited to spreading of warm cloud catalyst, but can be used for spreading of all powder materials.
[0004] This utility model provides the following technical solution:
[0005] A hygroscopic powder dispensing device comprises, from top to bottom, a loading bin (6), a drying bin (7), and a battery bin (8); the loading bin (6) includes at least two sub-bins for storing hygroscopic powder, each sub-bin being fed by a corresponding feeder (27); the drying bin (7) is used to pump air in via an air pump and dry it through at least one drying unit; the dried air enters a pipeline system (16), which includes a venturi tube (20), a throttle valve (25), and a pressure balancing pipe (26); most of the air drawn in is delivered into the venturi tube (20), which transports the hygroscopic powder and sprays it out through a powder nozzle (5); a small portion of the air drawn in passes through the throttle valve (25) and the pressure balancing pipe (26) into the hygroscopic powder packaging to balance the pressure; the battery bin (8) is used to hold a battery, which powers the loading bin (6) and the drying bin (7).
[0006] Preferably, the feeder (27) includes a cylindrical housing, with a quick interface (35) at the upper end of the housing, and a cutting blade for cutting hygroscopic powder packaging inside the quick interface (35); a crescent-shaped receiving port (37) is provided in the upper part of the housing, and a conveying pipe (38) is provided at the lowest point of the crescent-shaped receiving port (37), and a butterfly valve (36) is provided at the bottom of the conveying pipe (38) to control the powder supply.
[0007] Preferably, the piping system (16) further includes a distribution pipe (22) connected to the air outlet pipe (19) of the drying unit. The end of the distribution pipe (22) is connected to the Venturi tube (20) and the lower end of the feeder (27) for feeding. The end of the Venturi tube (20) is connected to the powder nozzle (5). The air outlet pipe (19) of the drying unit and the distribution pipe (22) are both connected by a solenoid valve. The throttle valve (25) is located at the end of the distribution pipe (22) and extends into each compartment through the air pressure balance pipe (26) located next to the housing of the feeder (27).
[0008] Preferably, an auxiliary air pipe (17) for purging each drying unit is also connected to the solenoid valves connected to the air distribution pipe (22) and the air outlet pipe (19).
[0009] Preferably, each of the compartments is equipped with a percussion motor for percussing the hygroscopic powder packaging.
[0010] Preferably, each of the compartments is provided with an operating hole (3) for filling with hygroscopic powder.
[0011] Preferably, the drying unit is covered with a heat insulation plate (29) for sealing and heat insulation, and a drying tube (32) is provided inside. The drying tube (32) is wrapped with a heating resistance wire (33), and the heat insulation plate (29) is filled with heat insulation cotton (30).
[0012] Preferably, the drying tube (32) is equipped with a humidity sensor.
[0013] Preferably, a heat insulation material is provided between the battery compartment (8) and the drying compartment (7).
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] The hygroscopic powder dispensing device provided by this utility model uses a controllable feeder for feeding and a pipeline system for mixing, transporting, and spraying air and powder. This feeding and powder conveying method reduces problems such as powder residue, clumping, uneven dispensing, and uncontrollable dispensing amount. It also solves the problem of feeding jams caused by insufficient air pressure inside the hygroscopic powder packaging. Furthermore, this utility model has the following advantages:
[0016] 1. Using ambient air as the fluid medium reduces the weight of the device itself compared to the traditional method of carrying gas cylinders, allowing more powdered catalysts to be carried without changing the aircraft's payload.
[0017] 2. The addition of two drying units ensures the supply of drying air while increasing the single operation time of the device. At the same time, a heating device is installed to regenerate the desiccant, reducing the operation procedures and lowering costs.
[0018] 3. A feeder is provided, which uses a quick connector to avoid the hygroscopic catalyst from absorbing water and clumping due to contact with humid air before application. Attached Figure Description
[0019] Figure 1 A schematic diagram of the structure of the hygroscopic powder spreading device provided in this embodiment of the utility model;
[0020] Figure 2 An exploded view of the drying chamber provided in an embodiment of this utility model;
[0021] Figure 3 This is a diagram of the main body inside the drying chamber provided in an embodiment of the present utility model;
[0022] Figure 4 Detailed diagram of the internal piping system of the drying chamber provided in this embodiment of the utility model;
[0023] Figure 5 A structural diagram of the drying unit provided in an embodiment of this utility model;
[0024] Figure 6 The feeder outline and perspective view provided for embodiments of this utility model.
[0025] In the picture:
[0026] 1. Compartment cover; 2. Aircraft mounting bracket; 3. Operating port; 4. DC knocking motor; 5. Powder nozzle; 6. Loading bin; 7. Drying bin; 8. Battery bin; 9. Drying bin outer shell; 10. First drying unit; 11. Second drying unit; 12. Miniature rotary vane air pump; 13. Air pump inlet pipe; 14. Exhaust pipe; 15. First solenoid valve; 16. Piping system; 17. Auxiliary air pipe; 18. Second solenoid valve; 19. Exhaust pipe; 20. Venturi tube; 21. Third solenoid valve; 22. Air distribution pipe; 23. Intelligent three-way solenoid valve; 24. Air delivery pipe; 25. Throttling valve; 26. Air pressure balance pipe; 27. Feeder; 28. Intelligent five-position three-way solenoid valve; 29. Heat insulation board; 30. Insulation cotton; 31. Drying unit inlet pipe; 32. Drying pipe; 33. Heating resistance wire; 34. Cross-cutting blade; 35. Quick connector; 36. Butterfly valve; 37. Crescent-shaped receiving port; 38. Material conveying pipe. Detailed Implementation
[0027] The present invention will now be described in detail with reference to the embodiments and accompanying drawings. However, it should be understood that the embodiments and accompanying drawings are for illustrative purposes only and do not constitute any limitation on the scope of protection of the present invention. All reasonable modifications and combinations that fall within the inventive spirit of the present invention are within the scope of protection of the present invention.
[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0029] The present invention will be further described below with reference to the accompanying drawings.
[0030] Please see Figure 1 This embodiment provides a hygroscopic powder spreading device, which is provided from top to bottom as a loading bin 6, a drying bin 7 and a battery bin 8; the loading bin 6 is used to store hygroscopic powder and is connected to the aircraft through the aircraft mounting bracket 2; the drying bin 7 is used to dry humid air and to transport and spread hygroscopic powder through the pipeline system 16; the battery bin 8 is used to hold batteries and power the system.
[0031] The specific construction is as follows:
[0032] The loading hopper 6 is equipped with a top cover 1 and four internal sub-compartments and four feeders 27. Different feeders 27 are activated for feeding according to usage. Each sub-compartment has an operating hole 3 for filling cans containing hygroscopic powder. The can outlet has a sealed film that is only opened during loading to minimize contact between the catalyst powder and air. Hygroscopic powders include catalysts used for artificial rainmaking. Each sub-compartment is equipped with two DC tapping motors 4 to tap the catalyst can, ensuring smooth powder flow. At least two sub-compartments are included to facilitate metered loading of catalyst according to usage requirements, reducing waste and preventing single-compartment malfunctions, ensuring smooth high-altitude operations.
[0033] Drying chamber 7: such as Figure 2 Located directly below the loading hopper 6, the drying chamber 7 includes a sealed drying chamber shell 9, which contains a first drying unit 10 and a second drying unit 11. The two drying units are connected by a piping system 16, and each is equipped with a miniature rotary vane air pump 12. Figure 3 The miniature rotary vane air pump 12 pumps air in through the air inlet pipe 13. After the air is dried by the first or second drying unit, it enters the pipeline system 16 through the air outlet pipe 19. Figure 4 The pipeline system 16 includes a powder nozzle 5, a venturi tube 20, a third solenoid valve 21, a smart three-way solenoid valve 23, an air supply pipe 24, a throttle valve 25, an air pressure balance pipe 26, a feeder 27, and a smart five-way three-way solenoid valve 28. The dried air first enters the five-way three-way solenoid valve 28. The system controls the switching of the five-way three-way solenoid valve 28. The smart five-way three-way solenoid valve 28 is connected to a distribution pipe 22. The air is divided into two paths through the distribution pipe 22. After being controlled by the smart three-way solenoid valve 23, the air flows to the air supply pipe 24 and then enters the venturi tube 20 as a fluid medium, carrying the catalyst powder to the tail end of the venturi tube 20, which connects to the electrostatic powder nozzle 5.
[0034] Insulation material is installed between the battery compartment 8 and the drying compartment 7 to prevent the battery compartment 8 from overheating.
[0035] like Figure 5 The first drying unit 10 is covered with a heat insulation plate 29 and contains a drying tube 32. The heat insulation plate 29 is filled with heat insulation cotton 30, and the drying tube 32 is wrapped with a heating resistance wire 33. The internal structure of the second drying unit 11 is symmetrical and similar to that of the first drying unit 10, and will not be described in detail here. Figure 6 The feeder 27 is equipped with a quick-connect interface 35 to reduce the contact between the catalyst and air during the filling process. The quick-connect interface 35 is equipped with a cross-cutting blade 34 to break open the catalyst packaging. The conveying pipe 38 is equipped with a butterfly valve 36 to control the supply of catalyst.
[0036] The working process of the powder catalyst spreading device provided in this embodiment is as follows:
[0037] First, the four catalyst packaging interfaces are quickly connected to the feeder 27 via quick connector 35 to complete the catalyst loading. Before use, the humidity is monitored by the hygrometer inside the drying tube 32. If the humidity is not up to standard, the drying tube 32 is heated and dried in advance. If the humidity is up to standard, the spreading device provided in this embodiment is mounted on the aircraft. Once the aircraft reaches the designated airspace, the miniature rotary vane air pump 12 pumps air in through the air pump inlet pipe 13. After being dried by the drying unit, the air enters the five-position three-way solenoid valve 28 through the outlet pipe 19, and then enters the distribution pipe 22. Controlled by the intelligent three-way solenoid valve 23, the air then enters the delivery pipe 24. A small amount of air then passes through the throttle valve 25 and the pressure balance pipe 26 to enter the catalyst packaging to balance the pressure. Most of the air enters the venturi tube 20 as a fluid medium to transport the catalyst. Note that the third solenoid valve 21 on the venturi tube 20 remains closed or open according to the needs of the usage chamber. Afterward, the butterfly valves 36 inside the corresponding feeders 27 are opened, and the catalyst powder is collected through the crescent-shaped receiving port 37. pass The catalyst powder enters the venturi tube 20 through the conveying pipe 38. Air carries the catalyst powder to the electrostatic powder nozzle 5 for spraying. After the catalyst is completely spread in the compartment, the butterfly valve 36 inside the corresponding compartment feeder 27 is closed. During the spreading process, the catalyst spreading in different compartments is controlled by switching between the intelligent three-way solenoid valve 23 and the third solenoid valve 21. The opening and closing of the butterfly valve 36 during the spreading process controls the spreading amount. During the spreading process, the DC knocking motor 4 of the corresponding loading compartment runs intermittently to knock on the catalyst packaging tank to ensure complete powder spreading.
[0038] In addition, the humidity inside the first drying unit 10 is monitored continuously during the application process. If the humidity is too high, the miniature rotary vane air pump 12 on one side of the second drying unit 11 is turned on, and the intelligent five-position three-way valve 28 is switched on. The first solenoid valve 15 is opened, and the drying unit 10 is heated through the heating resistance wire 33. Air is pumped into the second drying unit 11 through the air inlet pipe 13 on one side. The dried air enters the air distribution pipe 22 through the air outlet pipe 19 as a fluid medium. At the same time, the second solenoid valve 18 is opened, and a small amount of gas enters the first drying unit 10 through the auxiliary air pipe 17 to purge water vapor. Subsequent operations are the same. It should be noted that this device is equipped with a wireless transmitter and an intelligent control circuit board. The switching of all electronic components is remotely controlled by the operator on the ground.
[0039] The above embodiments are merely preferred embodiments of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that improvements and modifications made by those skilled in the art without departing from the principle of this invention should also be considered within the protection scope of this utility model.
Claims
1. A hygroscopic powder spreading device, characterized in that: It has a loading hopper (6), a drying hopper (7) and a battery hopper (8) from top to bottom; The loading bin (6) includes at least two compartments for storing hygroscopic powder, and each compartment is fed by a corresponding feeder (27). The drying chamber (7) is used to pump air in via an air pump and dry it through at least one drying unit; the dried air enters the pipeline system (16), which includes a venturi tube (20), a throttle valve (25) and a pressure balance tube (26). Most of the air drawn in is delivered into the venturi tube (20), which carries the hygroscopic powder and sprays it out through the powder nozzle (5); a small portion of the air drawn in passes through the throttle valve (25) and the pressure balance tube (26) into the hygroscopic powder packaging to balance the air pressure. The battery compartment (8) is used to hold batteries, which power the charging compartment (6) and the drying compartment (7).
2. The hygroscopic powder spreading device according to claim 1, characterized in that: The feeder (27) includes a cylindrical housing with a quick interface (35) at the upper end of the housing. The quick interface (35) contains a cutting blade for cutting hygroscopic powder packaging. The upper part of the housing has a crescent-shaped receiving port (37), and a conveying pipe (38) is located at the lowest point of the crescent-shaped receiving port (37). The bottom of the conveying pipe (38) is equipped with a butterfly valve (36) to control the powder supply.
3. The hygroscopic powder spreading device according to claim 2, characterized in that: The piping system (16) also includes a distribution pipe (22) connected to the outlet pipe (19) of the drying unit. The end of the distribution pipe (22) is connected to the Venturi tube (20) and the lower end of the feeder (27) for feeding. The end of the Venturi tube (20) is connected to the powder nozzle (5). The outlet pipe (19) of the drying unit and the distribution pipe (22) are connected by a solenoid valve. The throttle valve (25) is located at the end of the distribution pipe (22) and extends into each compartment through the air pressure balance pipe (26) located next to the housing of the feeder (27).
4. The hygroscopic powder spreading device according to claim 3, characterized in that: The solenoid valves connected to the gas distribution pipe (22) and the gas outlet pipe (19) are also connected to an auxiliary gas pipe (17) for purging each drying unit.
5. The hygroscopic powder spreading device according to claim 1, characterized in that: Each of the compartments is equipped with a percussion motor for striking the hygroscopic powder packaging.
6. The hygroscopic powder spreading device according to claim 5, characterized in that: Each of the compartments is provided with an operating hole (3) for filling with hygroscopic powder.
7. The hygroscopic powder spreading device according to claim 1, characterized in that: The drying unit is covered with a heat insulation plate (29) for sealing and heat insulation, and a drying tube (32) is provided inside. The drying tube (32) is wrapped with a heating resistance wire (33), and the heat insulation plate (29) is filled with heat insulation cotton (30).
8. The hygroscopic powder spreading device according to claim 7, characterized in that: A humidity sensor is provided in the drying tube (32).
9. The hygroscopic powder spreading device according to any one of claims 1 to 8, characterized in that: A heat-insulating material is provided between the battery compartment (8) and the drying compartment (7).