Powdery preparation dissolving and spraying device

Abstract

The embodiment of the utility model provides a powdery preparation dissolving and spraying device which comprises a direct-current self-priming pump, a venturi jet device, a spraying device and a spraying device. A water inlet of the direct-current self-priming pump is connected to a water source through a flexible pipeline, and a water outlet is connected to a pressure water inlet of the venturi jet device through a connecting pipeline. A discharging opening in the lower end of the storage bin is connected with the spiral conveying device so that the powdery preparation can be conveyed to an injection opening of the Venturi jet device, the sucked powdery preparation, air and the high-speed fluid can be fully mixed and dissolved in the mixing cavity, and mixed liquid is directly sprayed to the target water surface through the jet opening; wherein blades of the spiral conveying device are designed in a variable-pitch spiral mode, and the outer-side pitch is larger than the inner-side pitch; and the distance between the direct-current self-priming pump and the Venturi jet device is more than one time greater than the distance between the storage bin and the inlet of the jet device. According to the scheme of the embodiment of the invention, the powdery preparation can be quickly and uniformly dissolved and dispersed on the water surface.

Description

Technical Field

[0001] This application relates to agricultural machinery and equipment, specifically to a powdered preparation dissolving and spraying device. Background Technology

[0002] The spraying of powdered formulations often employs pre-mixing followed by spraying or mechanical stirring. These methods suffer from problems such as uneven mixing, high energy consumption, complex operation, and large mixing containers. Especially when treating large areas of water bodies, frequent relocation of equipment is required, and electricity is inconvenient, how to quickly and evenly dissolve and disperse powdered formulations on the water surface has become an urgent problem to be solved. Summary of the Invention

[0003] In view of this, the present disclosure provides a powdered preparation dissolving and spraying device, which at least partially solves the problems existing in the prior art.

[0004] This application discloses a powdered preparation dissolving and spraying device, comprising:

[0005] The DC self-priming pump provides pressurized water flow. The inlet of the DC self-priming pump is connected to the water source via a flexible pipe, and the outlet of the DC self-priming pump is connected to the pressurized water inlet of the Venturi jet via a connecting pipe.

[0006] The storage silo holds the powdered formulation. A screw conveyor connects to the outlet at the bottom of the silo. A drive motor rotates the screw blades, transporting the powdered formulation to the injection port of the Venturi jet injector. The sucked-in powdered formulation, air, and high-speed fluid are thoroughly mixed and dissolved in the mixing chamber, and the mixture is directly sprayed onto the target water surface through the injection port.

[0007] The blades of the screw conveyor are designed in a variable pitch screw configuration, with the outer pitch being greater than the inner pitch; and

[0008] The distance between the DC self-priming pump and the Venturi jet is more than twice as far as the distance between the storage silo and the jet inlet.

[0009] According to one embodiment, the powdered preparation dissolving spray device is mounted on a movable steel frame.

[0010] According to one embodiment, the DC self-priming pump is installed at the bottom of the movable steel frame, near the water source interface, and is equipped with anti-slip and shock-absorbing pads.

[0011] According to one embodiment, the internal structure of the Venturi jet includes a throat constriction section, a diffusion section, and a mixing chamber.

[0012] According to one embodiment, the storage silo is designed in a conical shape and equipped with a flip door at the bottom, which is driven by a pneumatic cylinder.

[0013] According to one embodiment, the screw conveyor is equipped with a cleaning brush plate for periodically cleaning residual powder in the gaps between the blades.

[0014] According to one embodiment, the battery has a protective casing, and a fast charging port and a charging indicator light are also provided on the side of the battery module.

[0015] According to one embodiment, detachable clamps are installed at both ends of the connecting pipe, and the pipe lining is also covered with an EPDM rubber inner membrane.

[0016] According to one embodiment, the steel frame is coated with anti-rust paint and has two small wheels of equal height and a set of steering wheels with fixing pins.

[0017] According to one embodiment, the Venturi jet ejector is fitted with a microporous filter screen outside the ejection port.

[0018] This disclosure provides a powdered preparation dissolving and spraying device, comprising: a DC self-priming pump providing pressurized water flow; the inlet of the DC self-priming pump being connected to a water source via a flexible pipe; and the outlet of the DC self-priming pump being connected to the pressurized water inlet of a Venturi jet injector via a connecting pipe; a storage hopper for holding the powdered preparation; and a screw conveyor connected to the outlet at the lower end of the storage hopper. A drive motor drives the rotation of the screw blades to transport the powdered preparation to the injection port of the Venturi jet injector. The sucked-in powdered preparation, air, and high-speed fluid are fully mixed and dissolved in a mixing chamber, and the mixture is directly sprayed onto the target water surface through the injection port. The screw conveyor is designed with a variable pitch screw, with the outer pitch being greater than the inner pitch. Furthermore, the distance between the DC self-priming pump and the Venturi jet injector is more than twice as far as the distance between the storage hopper and the injector inlet. This disclosure solves the problem of how to quickly and uniformly dissolve and disperse powdered preparations on a water surface. Attached Figure Description

[0019] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0020] Figure 1 This is a schematic diagram of the DC self-priming pump structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the shaft side structure of the DC self-priming pump of this utility model;

[0022] Figure 3 This utility model Figure 1 A top view of the structure of a DC self-priming pump;

[0023] Figure 4 This utility model Figure 1 Enlarged side view of the connecting pipe;

[0024] Figure 5 This utility model Figure 1 Schematic diagram of a microporous filter screen.

[0025] In the diagram: 1. DC self-priming pump; 2. Venturi jet injector; 3. Storage silo; 4. Screw conveyor; 5. Drive motor; 6. DC self-priming pump inlet; 7. Connecting pipe; 8. Injector port; 9. Jet port; 10. Anti-slip and shock-absorbing pad; 11. Throat contraction section; 12. Diffusion section; 13. Mixing chamber; 14. Flip-up door; 15. Pneumatic cylinder; 16. Intelligent controller; 17. Cleaning brush; 18. Temperature control sensor; 19. Cooling fan; 20. Battery; 21. Protective housing; 22. Fast charging interface and charging indicator light; 23. Removable clamp; 24. EPDM rubber inner membrane; 25. Rust-proof paint; 26. Fixing pin; 27. Steering wheel; 28. Microporous filter screen. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings. The illustrative implementation methods and descriptions of the embodiments of this disclosure are only used to explain the embodiments of this disclosure and are not intended to limit the embodiments of this disclosure.

[0027] like Figure 1 and Figure 2 As shown, a powdered preparation dissolving and spraying device of this application includes a DC self-priming pump 1 for providing pressurized water flow. One end of the DC self-priming pump 1 is connected to an external water source through a flexible pipe, namely the DC self-priming pump inlet 6, and the other end is connected to the pressurized water inlet of the Venturi jet 2 via a connecting pipe 7. The device is equipped with a storage bin 3 for holding the powdered preparation to be sprayed. The lower outlet of the storage bin 3 is connected to a screw conveyor 4, which is driven by a drive motor 5. The screw conveyor 4, through the rotation of the screw blades, quantitatively delivers the powdered preparation to the injection port 8 of the Venturi jet 2, so that it can be fully mixed with high-speed fluid and air under the negative pressure of the jet and dissolved in the mixing chamber. Then, a uniform mixture is formed and sprayed out from the injection port 9 at high speed and high pressure, directly sprayed onto the target water surface. The powdered preparation dissolving and spraying device is fixedly installed on a specially made movable steel frame, which facilitates operation and relocation, and is equipped with a battery 20 to provide the necessary power for the entire device.

[0028] The DC self-priming pump 1 is primarily used to provide a continuous and stable high-pressure water flow. Its inlet end is connected to the water source head via a flexible pipe, ensuring a stable water supply path even under slight movement conditions. Its output is routed to the Venturi jet injector 2 via a robust and durable rigid connecting pipe 7, ensuring leak-free water flow transmission and maintaining water pressure stability.

[0029] The Venturi jet injector 2 features a converging and then expanding throat structure. Internally, it includes a pressurized water inlet area and an ejector port 8 for guiding external air or powder into the system, where it merges with the high-pressure water flow. This ejector port 8 creates a strong suction effect, effectively capturing solid particles brought in by the screw conveyor system and immediately and thoroughly mixing and breaking them down into fine particles. The material then enters the suction chamber and subsequently the mixing chamber to complete an efficient blending process. Finally, the mixed liquid exits the device rapidly through the diffuser cone outlet, i.e., the jet port 9.

[0030] The main structure of the storage silo 3 is typically made of corrosion-resistant materials and possesses sufficient strength to prevent moisture or other environmental factors from damaging the stored chemical components. The bottom of the storage silo 3 is equipped with an adjustable discharge device, which connects to the front opening of the conveyor device 5 mentioned below. Adjusting the supply rate according to user needs allows for easy adjustment of the dosage and spraying density.

[0031] This conveying device 5 consists of a spiral blade conveyor that operates by controlling the rotation direction and frequency with an electric motor. This mechanical unit can accurately deliver powdered materials according to precise requirements. Frequency conversion adjustment controls the rotation speed, allowing for flexible adaptation to different flow demands in various application scenarios, ensuring delivery efficiency while improving operational accuracy.

[0032] In one embodiment, such as Figure 2 As shown, the DC self-priming pump 1 of the powder preparation dissolving and spraying device of this application is installed at the bottom of a movable steel frame and near the water source interface. To ensure the stability and suction efficiency of the pump during operation, an anti-slip and shock-absorbing pad 10 is installed at the bottom of the pump. This design effectively avoids device displacement caused by water flow impact and reduces vibration and noise during operation, while improving the overall reliability and service life of the device. The application of the anti-slip and shock-absorbing pad 10 also ensures that the device can maintain stable operation on uneven or slippery surfaces, ensuring that the powder preparation can dissolve more quickly and evenly and spread on the water surface. The above structural configuration not only improves the mechanical performance of the device but also ensures effective operation under various working conditions.

[0033] The DC self-priming pump 1 is specifically positioned at the bottom of the movable steel frame, adjacent to the water source interface to shorten the pipeline connection distance. To optimize the water flow path and prevent liquid leakage, a corrosion-resistant sealing joint is used for tight fixation between the pump and the water source interface. This sealing joint has a certain degree of flexibility, allowing it to adapt to slight deformation caused by thermal expansion and contraction without affecting the sealing effect. Meanwhile, anti-slip and shock-absorbing pads 10, made of a material with good elasticity and wear resistance, are attached and fixed around the bottom of the pump, directly contacting the ground to provide good cushioning. In practice, the self-priming pump and its associated shock-absorbing device are securely assembled into the predetermined position using bolts and fasteners, and a flexible pipe is used to connect the water source interface to the pump inlet.

[0034] See Figure 2 In one embodiment, the Venturi jet 2 of the powdered formulation dissolving and spraying device of this application has a unique internal structural design, including a throat constriction section 11, a diffusion section 12, and a mixing chamber 13. By optimizing the geometry and proportions of each part, the Venturi jet 2 can form an optimal flow velocity distribution before pressurized water enters the inlet 8 to enhance the negative pressure effect. This rational configuration of the structure can accelerate the mixing process between the powdered formulation and the high-speed fluid, and significantly improve its dissolution and dispersion effects, thereby achieving rapid and uniform dispersion on the water surface.

[0035] The Venturi jet 2 is designed based on fluid dynamics principles. The throat contraction section 11 is located between the inlet and the mixing chamber 13, accelerating the water flow as it passes through this region. The diffuser section 12 connects the mixing chamber 13 to the outlet, allowing the mixed fluid to slow down gradually and flow out steadily. The mixing chamber 13 is positioned between the contraction and diffuser sections 12 to promote the effective integration of the powdered formulation with the water flow. Specifically, the sections are seamlessly connected to ensure the continuity of the water flow from the inlet to the outlet and to maintain an optimal pressure gradient curve throughout the flow of the Venturi jet 2.

[0036] Specifically, the throat contraction section 11 is designed with a gradually decreasing cross-sectional shape, reaching its minimum cross-sectional area at the end to generate the highest flow velocity. The diffusion section 12 gradually widens outward from the minimum cross-section to near the initial diameter, thereby restoring normal flow velocity conditions. The mixing chamber 13 employs a specific volume and shape design that satisfies the spatial requirements of turbulent mixing while avoiding excessive energy loss. Through these technical measures, the Venturi jet 2 can provide a good mixing environment, supporting the efficient dissolution and dispersion of powdered formulations.

[0037] Continue to refer to Figure 2In one embodiment, the storage hopper 3 of the powdered formulation dissolving spraying device of this application is designed in a conical shape. This design helps to improve the flowability of materials inside the storage hopper 3, reduce residue, and ensure that the powder can be smoothly discharged through the outlet. The bottom of the storage hopper 3 is equipped with an adjustable-angle tilting door 14. The tilting door 14 is used to select the optimal opening angle according to different types of powdered formulations, ensuring that various powders can flow out smoothly. This design allows the operator to adjust the discharge rate and flow rate according to actual needs, adapting to powders with different characteristics.

[0038] The storage silo 3 is connected to a screw conveyor 4. A tilting door 14 is installed at the bottom of the storage silo 3 and is driven by a pneumatic cylinder 15. When closed, the tilting door 14 provides excellent sealing, effectively preventing dust leakage into the external environment; when open, it quickly discharges materials into the screw conveyor 4. To ensure the effective operation of the tilting door 14, the pneumatic cylinder 15 ensures smooth and reliable opening and allows for precise control of the opening angle of the tilting door 14 when needed.

[0039] In one embodiment, the storage silo 3 and its components are manufactured using appropriate materials and advanced processing techniques to ensure a tight assembly relationship between all parts. For the angle adjustment function of the tilting door 14, a programmable pneumatic system linked with sensors adjusts the position of the pneumatic cylinder 15 according to preset parameters, causing the door to rotate and open at the desired angle, thereby affecting the direction and rate of material flow. For example, in specific applications, for powdered preparations with high density or strong viscosity, a smaller opening angle can be selected to ensure uniform discharge; conversely, for lightweight powders with good flowability, a larger opening angle can be used to accelerate processing. Specifically, the angle adjustment range of the tilting door 14 can be set to a certain degree. After manually or automatically inputting the required angle value through the control interface, the pneumatic system will precisely execute the corresponding operation to ensure efficient operation of the device.

[0040] In one embodiment, such as Figure 3 As shown, the screw conveyor 4 of the powder dissolving and spraying device of this application adopts a variable pitch screw design. The outer screw pitch is larger, while the inner screw pitch is smaller. This design can effectively reduce the friction between powdery substances, allowing the material to be pushed forward smoothly and evenly. The screw conveyor 4 is connected to the intelligent controller 16. According to the actual working needs of the device, the intelligent controller 16 adjusts the rotation speed of the screw conveyor 4 in real time to ensure that the powder can be accurately and continuously fed into the Venturi jet 2. In addition, in order to prevent the powder from clogging due to accumulation during long-term operation, a cleaning brush 17 is specially configured in the device, which can periodically clean the residual powder in the gaps between the screw blades without affecting normal operation.

[0041] The spiral blades in the spiral conveyor 4 are installed inside the conveying pipe, penetrating the main body of the conveyor. A motor drives the spiral shaft to rotate, causing the powder to move forward along the spiral shaft. Specifically, in one embodiment, the gap between the blade root and the inner wall of the conveyor is finely machined to ensure that the powder does not get stuck. Cleaning brushes 17 are arranged along the length of the conveyor and are in close contact with the inner surface of the conveyor housing. When the equipment starts, the brushes move intermittently at certain time intervals with the intermittent operation of the device, thoroughly cleaning the spiral blades and the interior of the conveyor. For example, periodic cleaning can be achieved by setting a timer controller or position sensor to ensure continuous and efficient system operation.

[0042] Continue to refer to Figure 3 In one embodiment, the drive motor 5 of the powder preparation dissolving and spraying device of this application has a built-in temperature control sensor 18 for monitoring the operating temperature and is equipped with a cooling fan 19 to keep the internal environment of the equipment cool and dry. This design ensures that the drive motor 5 operates within a safe range. Once the temperature control sensor 18 detects an overheating condition, it automatically reduces speed or even shuts down for protection. The above measures aim to prevent safety risks caused by overheating and extend the life of the drive motor 5. This configuration helps to ensure the continuity and stability of the entire system, enabling operators to efficiently and stably complete the task of rapid and homogenized processing of powder preparations in any environment.

[0043] The housing of the drive motor 5 is securely fixed to the main frame of the device and connected to the control system to achieve intelligent monitoring and control functions. The temperature sensor 18 is attached to the surface of the drive motor 5 or located at a specific position within the motor cavity, sensitively capturing temperature changes. The cooling fan 19 is typically located on the top or side of the device, close to the drive motor 5, achieving rapid heat dissipation through an efficient airflow design and ventilation layout. These components constitute a closely coordinated working system.

[0044] Specifically, the built-in program logic control unit can receive data from the temperature control sensor 18. For example, it can issue a warning before the temperature rises to a preset threshold and trigger the cooling system to start. If the temperature continues to rise, it can adjust the speed of the drive motor 5 or stop it altogether to protect the entire system from damage.

[0045] In one embodiment, the energy supply section of the powder dissolving spraying device of this application uses a lithium-ion power battery pack as the energy storage element, with a rated capacity of at least ampere-hours (Ah). The power battery pack 20 is housed inside a protective casing 21 with an IP rating, providing dustproof, waterproof, and impact-resistant capabilities to prevent damage from external water stains and other accidents. A fast-charging interface and charging indicator light 22 are mounted on the side of the battery module to ensure that users can conveniently replenish the battery at any time and monitor the charging status in real time. These measures collectively ensure the device's energy supply capability, enabling a continuous and stable power supply even in remote water areas or other special environments, ensuring the smooth completion of the rapid and efficient dissolution process of the powder preparation.

[0046] Specifically, the protective shell 21 is made of high-strength engineering plastic or aluminum alloy, possessing excellent mechanical strength and effectively resisting physical impacts and chemical corrosion from the outside world. The internal lithium-ion battery pack is secured with clips and screws, ensuring a firm and secure installation. Simultaneously, the fast-charging interface and charging indicator light 22 are integrated into the same component, utilizing a plug-and-play structure for convenient user operation and ensuring stable signal transmission. For example, the charging current can be controlled via an embedded PCB circuit, simultaneously transmitting the charging status to the indicator light 22. Users can determine the remaining battery level, whether charging is in progress, or whether the battery is fully charged based on different light flashing patterns. This design ensures stable system operation and enhances the user experience.

[0047] In one embodiment, such as Figure 4 As shown, the connecting pipe 7 of the powdered preparation dissolving spraying device of this application is made of high-pressure resistant PVC material. The connecting pipe 7 is an important component of the device, with detachable clamps at both ends to ensure easy disassembly and assembly when maintenance or component replacement is required, thus simplifying maintenance. Furthermore, to ensure the sealing performance and mechanical strength of the device under maximum operating pressure conditions, the two ends of the connecting pipe 7 employ a specially designed clamp fixing method, making the connection firm and leak-proof. Considering the special needs of different application scenarios, especially in the case of using strongly acidic or alkaline water, the chemical stability of the pipe is further enhanced. By adding an EPDM rubber inner membrane 24 inside the pipe, not only is the pipe's resistance to corrosive substances significantly improved, but impurities are also effectively isolated from the mixed liquid, maintaining the purity of the sprayed material. The EPDM rubber inner membrane 24 is tightly bonded to the PVC pipe, providing reliable protective performance under various operating conditions.

[0048] In practical applications, high-pressure resistant PVC pipes are installed along the main liquid flow path of the entire spraying system, covering every link from the storage tank to each nozzle. Specifically, for example, in a water treatment facility project, all connecting pipes 7 are equipped with clamps and EPDM liners of the aforementioned structure. These measures ensure that even under complex water quality conditions and high operating pressure environments, the powdered formulation dissolving spraying device can operate stably and achieve the goal of efficiently and uniformly distributing the formulation to the target water surface.

[0049] In one embodiment, a key feature of the powder dissolving and spraying device of this application is that the maximum pumping capacity of the DC self-priming pump 1 is not less than 10 liters / minute. By ensuring a flow rate more than a multiple of the cross-sectional area of ​​the bottom of the storage silo 3, the powder is ensured to rapidly enter the water and dissolve completely. This device is specifically optimized for powders with high density or fine particles that are not easily suspended and dispersed. The storage silo 3 is located upstream of the dissolving and spraying system and is connected to the DC self-priming pump 1 via a pipeline. When the DC self-priming pump 1 operates, the strong traction effect generated by the high-speed water flow effectively carries the powder into the solvent, allowing it to be fully mixed into a homogeneous liquid. This design effectively avoids the problem of powder settling easily in conventional technologies, ensuring a consistent concentration of solution per unit volume. Therefore, this device is very suitable for rapid spraying tasks in large areas of water.

[0050] In one embodiment, the specially designed movable steel frame of the powdered preparation dissolving spraying device of this application is made of high-strength alloy steel, which possesses excellent mechanical properties and corrosion resistance. To ensure that it is not affected by rust during long-term use, the surface of the steel frame is finely treated and coated with 25 layers of anti-rust paint, thereby effectively delaying the impact of the external environment on the material. In terms of mobility, the bottom of the steel frame is equipped with two small wheels of the same height and appropriate spacing, as well as a set of steering wheels 27. The steering wheels 27 are equipped with fixing pins 26, which allows the entire device to be flexibly pushed on complex terrain and to stand stably without wobbling when operating at a fixed point.

[0051] For example, the small wheels and steering wheels 27 are mounted on both sides of the bottom of the steel frame. The small wheels are kept at the same height parallel to the ground to ensure smooth driving. The steering wheels 27 are located on the other side of the device, and the fixing pins 26 are connected to the steering wheels 27 through a hinge mechanism. The operator can lock or unlock them by rotating the pins, thereby locking the steering position or releasing them for free rotation. At the same time, the pump and ejector are directly fixed to the front frame beam of the steel frame. The two are connected to each other through short pipes, which facilitates maintenance and also helps to reduce pressure drop caused by bends in the pipes.

[0052] In one embodiment, such as Figure 5As shown, the Venturi jet nozzle 2 of the powdered preparation dissolving spraying device of this application is specially provided with a component with a microporous filter screen 28 outside the jet outlet, which is used to effectively prevent larger impurities from passing through the nozzle or other key components, and prevent the risk of secondary pollution and possible mechanical failure caused by these impurities.

[0053] One of the core components of the Venturi jet injector 2 is its nozzle structure. To ensure optimal jetting performance under specific conditions, a special design connects the nozzle to the main delivery pipeline. In practice, the inlet of the Venturi jet injector 2 can be directly connected to the delivery pipeline, and precision machining ensures a precise fit between the nozzle's outer edge and the overall seal. For example, the injector body can be made of high-strength stainless steel, and the nozzle can be secured internally using a special threaded locking method. Simultaneously, a microporous filter screen 28 is fitted at the jet outlet end. This screen, composed of a high-precision filter mesh, is fixed by welding or snap-fit, ensuring both stable installation and easy cleaning and maintenance. Specifically, the pore size of this microporous filter screen 28 must be carefully selected to ensure that it neither hinders the smooth flow of liquid nor misses any particles that might affect the normal operation of the system.

[0054] In one embodiment, the distance between the DC self-priming pump 1 and the Venturi jet injector 2 of the powdered formulation dissolving spray device of this application is more than twice as far as the distance between the storage silo 3 and the jet injector inlet. This spatial arrangement ensures that a stable high-pressure jet is established as the liquid is discharged from the pump and conducted through the long hose, thereby ensuring more effective entrainment and dispersion of solid raw materials when it comes into contact with the material projection area near the tail end. The device is designed with the spatial configuration between different components in mind, aiming to improve the overall effect of the dispersion operation.

[0055] The distance between the DC self-priming pump 1 and the Venturi jet injector 2 is achieved by adjusting their installation positions. Typically, the DC self-priming pump 1 is placed further away from the jet injector to ensure the stability of the liquid flow path; while the storage hopper 3 is placed relatively close to the jet injector inlet. However, the specific installation point is adjusted according to the application and equipment layout to ensure that the set distance ratio is met. This distance setting effectively prevents interference with jet formation or premature energy consumption due to excessively short intervals, helping to ensure the working performance of the spraying device.

[0056] In one embodiment, to meet the technical requirements of a specific application scenario, such as the need to process relatively difficult-to-dissolve powdered preparations, an appropriate pipe length can be selected to connect the DC self-priming pump 1 and the Venturi jet injector 2. This ensures that the liquid flow discharged from the pump generates sufficient kinetic energy and stable pressure during transmission, and that increased resistance is avoided through reasonable pipe bending angles or support structures. Ultimately, this allows the jet to smoothly entrain and disperse the powdered preparation dispensed from the storage silo 3, ensuring efficient operation of the device. Specifically, the optimal distance and pipe parameters can be determined by calculating different material properties and required dispersion to ensure the reliability and efficiency of the entire device.

[0057] In actual operation, when this device is used, the specially designed movable steel frame is first pushed to the target position and fixed in place, ensuring that the entire powder preparation dissolving and spraying device is in a stable and convenient working position. The DC self-priming pump 1, as one of the core components of the device, begins to work to provide the required pressurized water flow. The DC self-priming pump 1 is connected to an external water source through a flexible pipe, drawing water and delivering it to the Venturi jet injector 2 through the connecting pipe 7.

[0058] The Venturi jet injector 2 plays a crucial role in this process. Water flows through the complex internal flow channel structure of the injector, entering through the pressurized water inlet and generating a strong negative pressure effect in the suction chamber. This negative pressure effectively draws in the mixture of air and powdered preparations, forcing them into the mixing chamber 13. Simultaneously, pre-prepared powdered preparations (such as fertilizers and disinfectants) in the storage silo 3 move downwards by gravity or a screw conveyor 4. The drive motor 5 drives the helical blades to rotate, thus quantitatively and periodically pushing a specific amount of powdered material towards the injection port 8 of the Venturi jet injector 2.

[0059] During this period, as the flow rate increases and the fluid velocity reaches its maximum, the mixing process is completed rapidly and thoroughly—the powder and high-pressure water flow are fully combined, and the combined stirring effect of the drawn-in ambient air achieves uniform dissolution and mixing, ultimately forming a homogeneous liquid-solution mixture that flows through the jet nozzle 9 and is ejected at high speed and widely distributed over the designated target water body. Since the entire device is battery-powered, it can operate independently for extended periods in the field or other environments without AC power. Furthermore, the amount of powdered preparation added can be precisely controlled by adjusting the speed of the drive motor 5, ensuring both efficacy and environmentally friendly application results.

[0060] The above description is the preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A device for dissolving and spraying a powdered formulation, characterised in that, The device comprises: A direct current self-priming pump (1) provides a pressure water flow, the water inlet of the direct current self-priming pump (6) is connected to a water source by a flexible pipeline, and the water outlet of the direct current self-priming pump is connected to the pressure water inlet of a Venturi jet device (2) through a connecting pipeline (7); A storage bin (3) is used for placing a powdery preparation, the lower end of the storage bin (3) is connected to a screw conveying device (4), the rotation of the screw blade is driven by a driving motor (5) to convey the powdery preparation to the suction port (8) of the Venturi jet device, the powdery preparation, air and high-speed fluid are fully mixed and dissolved in the mixing chamber, and the mixed liquid is directly sprayed onto the target water surface through the jet port (9); wherein The blade of the screw conveying device (4) is designed in a variable-pitch screw form, and the outer pitch is greater than the inner pitch; and The distance between the direct current self-priming pump (1) and the Venturi jet device (2) is more than twice the distance between the storage bin (3) and the jet device inlet.

2. A device for dissolving and spraying a powdered formulation according to claim 1, characterised in that: The powdery preparation dissolving and spraying device is installed on a movable steel frame.

3. A device for dissolving and spraying a powdered formulation according to claim 1, characterised in that: The direct current self-priming pump (1) is installed below the bottom of the movable steel frame near the water source interface and is provided with an anti-skid damping pad (10).

4. A device for dissolving and spraying a powdered formulation according to claim 1, characterised in that: The internal structure of the Venturi jet device (2) comprises a throat contraction section (11), a diffusion section (12) and a mixing chamber (13).

5. A device for dissolving and spraying a powdered formulation according to claim 1, characterized in that: The storage bin (3) is designed in a conical form, the bottom is provided with a turnover door (14), and the turnover door (14) is driven by a pneumatic cylinder (15).

6. A device for dissolving and spraying a powdered formulation according to claim 1, characterized in that: The screw conveying device (4) is provided with a cleaning brush plate (17) for periodically cleaning the powdery preparation remaining in the blade gap.

7. A device for dissolving and spraying a powdered formulation according to claim 1, characterized in that: The storage battery (20) has a protective shell (21), and a quick charging interface and a charging indicator light (22) are arranged on the side of the battery module.

8. A device for dissolving and spraying a powdered formulation according to claim 1, characterized in that: The connecting pipeline (7) is provided with detachable clamps (23) at both ends, and the inner lining of the pipeline is additionally covered with an EPDM rubber inner film (24).

9. A device for dissolving and spraying a powdered formulation according to claim 1, characterized in that: The steel frame is coated with anti-rust paint (25) and has two small wheels with equal heights and a set of steering wheels (27) with fixed latches (2).

10. A device for dissolving and spraying a powdered formulation according to claim 1, characterized in that: The Venturi jet device (2) is provided with a microporous filter screen cover (28) outside the jet port.

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