A portable aerosol spray generating device

Abstract

The present invention discloses a portable aerosol spray generating device, which relates to the technical field of special aerosol generation; it comprises a spray gun assembly, a spray pipe is installed at one end of the buffer diffusion chamber of the spray gun assembly, and a gas-liquid two-phase flow delivery pipeline and a gas-solid two-phase flow delivery pipeline are respectively arranged at the other end; the gas-solid two-phase flow delivery pipeline is connected to a high-pressure gas tank and a powder storage tank through a first venturi ejector; the high-pressure gas tank is connected to the inside of the liquid storage tank, and the bottom of the liquid storage tank is connected to the spray gun assembly through a gas-liquid two-phase flow delivery pipeline; a controller is arranged in the spray gun assembly. The portable aerosol spray generating device provided by the present invention realizes the integrated operation of powder injection and liquid atomization injection by using a set of gas source power and a set of spray gun assemblies.

Description

Technical Field

[0001] The invention relates to the technical field of special aerosol generation, in particular to a portable aerosol spray generation device. Background Art

[0002] Aerosol refers to a gaseous dispersion system composed of solid or liquid particles suspended in a gas medium. At present, the backpack liquid spray technology is relatively mature, and the application scope of backpack powder injection technology is also expanding. However, most of this type of equipment can only realize the powder spraying function or the spraying function alone, and cannot realize the two aerosol spraying functions of powder and liquid with one set of equipment, which is inconvenient to use. Summary of the invention

[0003] The purpose of the present invention is to provide a portable aerosol spray generating device to solve the problems existing in the above-mentioned prior art, and to realize the integrated operation of powder spraying and liquid atomization spraying by utilizing a set of air source power and a set of spray gun components.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The invention provides a portable aerosol spray generating device, comprising a spray gun assembly, wherein the spray gun assembly comprises a buffer diffusion chamber; a nozzle is installed at one end of the buffer diffusion chamber, and a gas-liquid two-phase flow conveying pipeline and a gas-solid two-phase flow conveying pipeline are respectively arranged at the other end; the gas-solid two-phase flow conveying pipeline is connected with a high-pressure gas tank and a powder storage tank through a first venturi ejector; the high-pressure gas tank is connected with the inside of a liquid storage tank, and the bottom of the liquid storage tank is connected with the spray gun assembly through the gas-liquid two-phase flow conveying pipeline; a controller is arranged in the spray gun assembly. When in use, compressed air is provided by a high-pressure gas cylinder and regulated by a pressure regulator. One path of compressed air enters the Venturi ejector to suck out the powder in the powder storage tank to form an air-powder mixture, which is sprayed out from the barrel of the double-tube spray gun to form a powder aerosol; one path of compressed air enters the liquid storage tank, so that the liquid in the tank is directly sprayed out through the Venturi ejector in the double-tube spray gun; one path of compressed air directly enters the Venturi ejector in the double-tube spray gun to mix with the liquid sprayed from the liquid storage tank, and the high-speed flowing gas-liquid mixture is sprayed out from the spray gun mouth in the form of liquid aerosol through the atomizing nozzle.

[0006] Optionally, the nozzle is connected to the inside of the spray gun assembly through the first piston switch, the gas-liquid two-phase flow delivery pipeline is connected to the inside of the spray gun assembly through the second piston switch, and the gas-solid two-phase flow delivery pipeline is connected to the inside of the spray gun assembly through the third piston switch; the controller is a piston switch controller for controlling the first piston switch, the second piston switch and the third piston switch, the piston switch controller is connected to a spray gun trigger, the spray gun assembly switch is controlled by the spray gun trigger, and the trigger amplitude can control the liquid flow rate. The gun head nozzle is designed to be threaded and detachable, and is equipped with nozzles of different models to achieve different atomization degree injection requirements. The spray gun assembly is provided with a second Venturi ejector, which can realize the atomization injection function of typical liquids such as aqueous solutions and various ultrafine powders; it has the function of regulating the flow rate of liquid and powder; it has the function of regulating the atomization state of liquid and powder; it has the function of switching between liquid and powder atomization; the equipment is portable, flexible to operate and move, and can be freely sprayed in multiple directions.

[0007] Optionally, a spherical valve is arranged between the first Venturi ejector and the gas-solid two-phase flow conveying pipeline, and one end of the first Venturi ejector away from the gas-solid two-phase flow conveying pipeline is connected to a passage of the first gas circuit tee, and the other two passages of the first gas circuit tee are respectively connected to the high-pressure gas tank and the gas-liquid two-phase flow conveying pipeline; a one-way valve is arranged between the first gas circuit tee and the gas-liquid two-phase flow conveying pipeline; it can effectively prevent liquid reflux, reduce the number of manual valves, make operation more convenient, and make the pipeline simpler, so that powder injection and liquid injection can be carried out independently or simultaneously.

[0008] Optionally, a gas tank pressure reducing valve is provided at the gas outlet interface of the high-pressure gas tank, the gas tank pressure reducing valve is connected to a second gas circuit tee, two passages of the second gas circuit tee are respectively connected to the inside of the liquid storage tank and the first gas circuit tee, and the liquid outlet interface at the bottom of the liquid storage tank is connected to the gas-liquid two-phase flow delivery pipeline; a gas tank pressure gauge is installed on the gas tank pressure reducing valve, which can monitor the pressure in the gas cylinder in real time. The pressure reducing valve is equipped with a safety valve, and a safety valve is installed on the top of the powder tank to avoid danger caused by excessive pressure in the pipeline and the powder storage tank / liquid storage tank.

[0009] Optionally, a powder storage tank safety valve is installed above the powder storage tank, and a powder outlet interface at the bottom of the powder storage tank is connected to the first Venturi ejector.

[0010] Optionally, the high-pressure gas cylinder can adopt a carbon fiber high-pressure gas cylinder, which is made of an aluminum alloy liner and high-strength carbon fiber filaments wound together. It has strong pressure resistance and wear resistance and good safety. It has great hardness, is durable, and is lighter than ordinary aluminum bottles or steel cylinders, making it easy to carry. The present application does not limit the specific material and manufacturing process of the high-pressure gas cylinder. Other materials and methods can also be used for manufacturing. For example, high-pressure gas cylinders made of stainless steel, graphene and other materials can also be used. The high-pressure gas cylinder pressure reducing valve has its own pressure gauge, which can monitor the pressure inside the gas cylinder in real time. The threaded cover design has good sealing performance. The main valve of the gas cylinder has its own pressure gauge, and the pressure inside the gas cylinder can be obtained in real time. The pressure regulator uses a fixed-value pressure reducing valve according to demand, which can reduce the high-pressure gas in the gas cylinder to the design value and output stably.

[0011] The liquid storage tank and the powder storage tank are customized as thickened stainless steel pressure tanks. The feeding ports of the liquid storage tank and the powder storage tank are sealed by quick-connect flanges, which is convenient for the filling of liquid and powder materials. A safety valve is installed on the flange end cover of the powder storage tank to ensure the safety of equipment operation, and the bottom is for discharging. An air inlet pipe is installed on the flange end cover of the liquid storage tank, and the bottom is the liquid outlet. The outlet joint adopts a special design, which can not only ensure good sealing, but also realize 360-degree free rotation of the joint direction, which is convenient for pipeline layout design. The powder storage tank, the high-pressure gas tank and the liquid storage tank are fixedly connected by a U-shaped hoop, and the outer sides of the powder storage tank and the liquid storage tank are symmetrically provided with fixed plates; the top feed port of the powder storage tank is connected to a sealing cover by a first flange, and the top feed port of the liquid storage tank is connected to a sealing cover by a second flange.

[0012] Compared with the prior art, the present invention has achieved the following technical effects:

[0013] The invention can not only be carried by a single soldier, but also realizes the integrated operation of powder spraying and liquid atomization spraying by using a set of gas source power and a set of spray gun components. It is easy to carry and simple to operate. Compared with traditional aerosol generators, the invention can be used to continuously and quickly generate powder aerosols or liquid aerosols with special functions such as disinfection and sterilization, and can be used for related scientific research, teaching experiments or use requirements in specific environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the storage tank group of the present invention;

[0016] Figure 2 It is a schematic diagram of the spray gun assembly of the present invention;

[0017] Figure 3 This is a schematic diagram of the pipeline connection of the portable aerosol spray generating device of the present invention;

[0018] Among them, 1 is a spray gun assembly, 2 is a high-pressure gas tank, 3 is a powder storage tank, 4 is a liquid storage tank, 5 is a nozzle, 6 is a gas-liquid two-phase flow conveying pipeline, 7 is a gas-solid two-phase flow conveying pipeline, 8 is a first venturi ejector, 9 is a powder storage tank safety valve, 10 is a powder outlet interface, 11 is a first piston switch, 12 is a second piston switch, 13 is a third piston switch, 14 is a piston switch controller, 15 is a spray gun trigger, 16 is a ball valve, 17 is a first gas circuit tee, 18 is a one-way valve, 19 is an air outlet interface, 20 is a gas storage tank pressure reducing valve, 21 is a second gas circuit tee, 22 is a liquid outlet interface, 23 is a gas storage tank pressure gauge, 24 is a U-shaped hoop, 25 is a fixing plate, 26 is a first flange, 27 is a second flange, and 28 is a buffer diffusion chamber. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The purpose of the present invention is to provide a portable aerosol spray generating device to solve the problems existing in the above-mentioned prior art, and to realize the integrated operation of powder spraying and liquid atomization spraying by utilizing a set of air source power and a set of spray gun components.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figure 1 -Attached Figure 3As shown, the present invention provides a portable aerosol spray generating device, comprising a spray gun assembly 1 and a material storage tank group, the material storage tank group comprising a high-pressure gas tank 2, a powder storage tank 3 and a liquid storage tank 4; the spray gun assembly 1 comprises a buffer diffusion chamber 28, one end of which is equipped with a nozzle 5, and the other end is respectively provided with a gas-liquid two-phase flow conveying pipeline 6 and a gas-solid two-phase flow conveying pipeline 7; the gas-solid two-phase flow conveying pipeline 7 is connected with the high-pressure gas tank 2 and the powder storage tank 3 through a first venturi ejector 8, a powder storage tank safety valve 9 is installed above the powder storage tank 3, and a powder outlet interface 10 at the bottom of the powder storage tank 3 is connected with the first venturi ejector 8; the high-pressure gas tank 2 is connected with the inside of the liquid storage tank 4 through a pipeline, and the bottom of the liquid storage tank 4 is connected with the spray gun assembly 1 through the gas-liquid two-phase flow conveying pipeline 6; a controller is arranged in the buffer diffusion chamber 28 of the spray gun assembly 1. When in use, the compressed air is provided by the high-pressure gas tank 2 and regulated by the pressure regulator. One path of the compressed air enters the first venturi ejector 8 to suck out the powder in the powder storage tank 3 to form an air-powder mixture, which is ejected from the nozzle 5 of the double-tube spray gun to form a powder aerosol; one path of the compressed air enters the liquid storage tank 4, so that the liquid in the tank is directly ejected through the second venturi ejector in the double-tube spray gun; one path of the compressed air directly enters the second venturi ejector in the double-tube spray gun to mix with the liquid ejected from the liquid storage tank 4, and the high-speed flowing gas-liquid mixture is ejected from the nozzle 5 in the form of liquid mist aerosol through the atomizing nozzle.

[0023] Further preferably, the nozzle 5 is connected to the inside of the spray gun assembly 1 through the first piston switch 11, the gas-liquid two-phase flow delivery pipeline 6 is connected to the inside of the spray gun assembly 1 through the second piston switch 12, and the gas-solid two-phase flow delivery pipeline 7 is connected to the inside of the spray gun assembly 1 through the third piston switch 13; the controller is a piston switch controller 14 for controlling the first piston switch 11, the second piston switch 12 and the third piston switch 13, the piston switch controller 14 is connected to the spray gun trigger 15, and the switch in the buffer diffusion chamber 28 of the spray gun assembly 1 is controlled by the spray gun trigger 15, and the trigger amplitude can control the liquid flow rate. The nozzle at the nozzle of the gun head is designed to be threaded and detachable, and is equipped with nozzles of different models to achieve different atomization degree injection requirements. The spray gun assembly 1 is provided with a second venturi ejector, which can realize the atomization injection function of typical liquids such as aqueous solutions and various ultrafine powders; it has the function of adjusting the flow rate of liquid and powder; it has the function of adjusting the atomization state of liquid and powder; it has the function of switching the atomization of liquid and powder; the equipment is portable, flexible in operation and movement, and can be freely injected in multiple directions.

[0024] A spherical valve 16 is arranged between the first venturi ejector 8 and the gas-solid two-phase flow conveying pipeline 7, and one end of the first venturi ejector 8 away from the gas-solid two-phase flow conveying pipeline 7 is connected to a passage of the first gas circuit tee 17, and the other two passages of the first gas circuit tee 17 are respectively connected to the high-pressure gas tank 2 and the gas-liquid two-phase flow conveying pipeline 6; a one-way valve 18 is arranged between the first gas circuit tee 17 and the gas-liquid two-phase flow conveying pipeline 6; it can effectively prevent liquid reflux, reduce the number of manual valves, make operation more convenient, and make the pipeline more simplified, so that powder injection and liquid injection can be carried out independently or simultaneously. A gas tank pressure reducing valve 20 is provided at the gas outlet interface 19 of the high-pressure gas tank 2. The gas tank pressure reducing valve 20 is connected to a second gas circuit tee 21. Two passages of the second gas circuit tee 21 are respectively connected to the inside of the liquid storage tank 4 and the first gas circuit tee 17. The liquid outlet interface 22 at the bottom of the liquid storage tank 4 is connected to the gas-liquid two-phase flow delivery pipeline 6. A gas tank pressure gauge 23 is installed on the gas tank pressure reducing valve 20, which can monitor the pressure in the gas cylinder in real time. The pressure reducing valve is equipped with a safety valve, and a safety valve is installed at the top of the powder tank to avoid danger caused by excessive pressure in the pipeline and the powder storage tank / liquid storage tank.

[0025] High-pressure gas tank 2 has strong pressure resistance and wear resistance, good safety; it has great hardness, is durable, and is lighter than ordinary aluminum or steel cylinders, making it easy to carry. The high-pressure gas cylinder pressure reducing valve comes with a pressure gauge, which can monitor the pressure in the gas cylinder in real time. The threaded cover design has good sealing. The main valve of the gas cylinder comes with a pressure gauge, which can obtain the pressure in the gas cylinder in real time. The pressure regulator uses a fixed-value pressure reducing valve according to demand, which can reduce the high-pressure gas in the gas cylinder to the design value and output it stably. The liquid storage tank and the powder storage tank are customized as thickened stainless steel pressure tanks. The feeding ports of the liquid storage tank and the powder storage tank are sealed by quick-connect flanges, which is convenient for the filling of liquid and powder materials. A safety valve is installed on the flange end cover of the powder storage tank to ensure the safety of equipment operation, and the bottom is for discharging. The flange end cover of the liquid storage tank is equipped with an air inlet pipe, and the bottom is the liquid outlet. The outlet joint is specially designed to ensure good sealing and realize 360-degree free rotation of the joint direction, which is convenient for pipeline layout design. The powder storage tank 3, the high-pressure gas tank 2 and the liquid storage tank 4 are fixedly connected by a U-shaped hoop 24, and fixed plates 25 are symmetrically arranged on the outside of the powder storage tank 3 and the liquid storage tank 4; a sealing cover is connected to the top feed port of the powder storage tank 3 through a first flange 26, and a sealing cover is connected to the top feed port of the liquid storage tank 4 through a second flange 27.

[0026] When the present invention is used, gas and liquid enter the chamber of the spray gun assembly 1 through the gas pipe and the liquid pipe respectively. Under the action of the pressure in the chamber, the spray gun trigger 15 is pulled to open the piston switch controller, and the liquid / gas is sprayed out through the nozzle 5. The size of the piston opening is adjusted by controlling the pulling amplitude of the spray gun trigger 15, thereby realizing flow control, and the operation is convenient. Since the powder storage tank 3 and the liquid storage tank 4 share a pressurized gas pipeline, powder / liquid cross-flow phenomenon will occur when powder spraying or liquid spraying is performed separately. The conventional practice is to add a valve switch, close the powder spraying pipeline during liquid spraying operation, and close the liquid spraying pipeline during powder spraying operation, which makes the operation cumbersome and has poor reliability. The optimized design scheme of the present invention is to add a one-way valve 18 at the gas pipeline branch, which effectively prevents the powder / liquid reflux phenomenon, and does not require any additional operation during the powder spraying / liquid spraying operation, and has good reliability.

[0027] Specifically, during the working process, first check the pressure of the high-pressure gas tank 2, and fill the pressure of the high-pressure gas tank 2 to the rated pressure; add the powder and liquid to the powder storage tank 3 and the liquid storage tank 4 respectively, and lock the flange end cover; close all valves, and then open the valve of the high-pressure gas tank 2 to check whether the air tightness of the equipment is intact. It can be used only if there is no leakage, otherwise it will be handed over to the technician for processing. Hold the spray gun with both hands, aim at the target, pull the spray gun trigger 15 to spray liquid, and open the ball valve 16 to spray powder. When spraying powder, the tank body should be shaken appropriately to facilitate the transportation of powder. After the spraying operation is completed, close the gas tank valve. At this time, there is still residual pressure in the powder storage tank 3, the liquid storage tank 4 and the pipeline. The entire equipment must be depressurized by pulling the trigger to drain the liquid and gas in the liquid storage tank 4 or by opening the ball valve to drain the gas in the storage tank and the pipeline, and then operations such as replenishing materials or replenishing gas can be performed.

[0028] Embodiment 1

[0029] 1. Assemble the equipment and check the pressure of the high-pressure gas tank. If it is lower than 15MPa, the pressure needs to be filled to 30MPa.

[0030] 2. Add powder and liquid into the powder storage tank and liquid storage tank respectively, and lock the flange end cover;

[0031] 3. Close all valves, then open the high-pressure gas tank valve, check whether the equipment is airtight, and focus on the joints of each valve and the pipeline. If there is leakage, close the high-pressure gas tank valve immediately. If the leakage is caused by a loose joint, tighten the joint. Reopen the gas tank valve and use it only if there is no leakage. Otherwise, hand it over to the technicians for processing.

[0032] 4. Hold the spray gun with both hands, aim at the target, and pull the trigger to spray liquid. Open the ball valve to spray powder. When spraying powder, shake the tank appropriately to facilitate the transportation of powder.

[0033] 5. After the spraying operation is completed, close the gas tank valve. At this time, there is still pressure in the powder storage tank, liquid storage tank and pipeline. The entire equipment must be depressurized by pulling the trigger to drain the liquid and gas in the liquid storage tank or by opening the ball valve to drain the gas in the storage tank and pipeline. Then operations such as replenishing materials or replenishing gas can be performed. This embodiment can realize the atomization spraying function of typical liquids (water) and typical powders (graphite micropowder); it has the function of regulating the flow of liquids and powders; it has the function of regulating the atomization state of liquids and powders; it has the function of switching between liquid and powder atomization; the equipment is portable, flexible in operation and movement, and can spray freely in multiple directions.

[0034] In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A portable aerosol spray generating device, characterized in that: The invention comprises a spray gun assembly, wherein a nozzle is installed at one end of the buffer diffusion chamber of the spray gun assembly, and a gas-liquid two-phase flow conveying pipeline and a gas-solid two-phase flow conveying pipeline are respectively arranged at the other end; the gas-solid two-phase flow conveying pipeline is connected to a high-pressure gas tank and a powder storage tank through a first venturi ejector; the high-pressure gas tank is connected to the inside of the liquid storage tank, and the bottom of the liquid storage tank is connected to the spray gun assembly through a gas-liquid two-phase flow conveying pipeline; a controller is arranged in the spray gun assembly; the nozzle is connected to the inside of the spray gun assembly through a first piston switch, the gas-liquid two-phase flow conveying pipeline is connected to the inside of the spray gun assembly through a second piston switch, and the gas-solid two-phase flow conveying pipeline is connected to the inside of the spray gun assembly through a third piston switch. The spray gun assembly is internally connected; the controller is a piston switch controller for controlling the first piston switch, the second piston switch and the third piston switch, and the piston switch controller is connected to a spray gun trigger; a second venturi ejector is arranged inside the spray gun assembly; a ball valve is arranged between the first venturi ejector and the gas-solid two-phase flow conveying pipeline, one end of the first venturi ejector away from the gas-solid two-phase flow conveying pipeline is connected to a passage of the first gas circuit tee, and the other two passages of the first gas circuit tee are respectively connected to the high-pressure gas tank and the gas-liquid two-phase flow conveying pipeline; a one-way valve is arranged between the first gas circuit tee and the gas-liquid two-phase flow conveying pipeline.

2. The portable aerosol spray generating device according to claim 1, characterized in that: A gas tank pressure reducing valve is provided at the gas outlet interface of the high-pressure gas tank, and the gas tank pressure reducing valve is connected to a second gas circuit tee, two passages of which are respectively connected to the interior of the liquid storage tank and the first gas circuit tee, and the liquid outlet interface at the bottom of the liquid storage tank is connected to the gas-liquid two-phase flow delivery pipeline; a gas tank pressure gauge is installed on the gas tank pressure reducing valve.

3. The portable aerosol spray generating device according to claim 1, characterized in that: A powder storage tank safety valve is installed above the powder storage tank, and a powder outlet interface at the bottom of the powder storage tank is communicated with the first Venturi ejector.

4. The portable aerosol spray generating device according to claim 1, characterized in that: The powder storage tank, high-pressure gas tank and liquid storage tank are fixedly connected by a U-shaped hoop, and fixed plates are symmetrically arranged on the outside of the powder storage tank and the liquid storage tank; a sealing cover is connected to the feed port on the top of the powder storage tank through a first flange, and a sealing cover is connected to the feed port on the top of the liquid storage tank through a second flange.

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