CN115228643B - A pneumatic atomization spraying method and system - Google Patents

Abstract

The invention provides a pneumatic atomization spraying method and a pneumatic atomization spraying system, which relate to the technical field of spraying, wherein the pneumatic atomization spraying system comprises the following components: the spraying device comprises an air source module, a second air path module, a first air path module, an atomization module, a mist flow treatment module and a spraying module; the air source module is respectively connected with the second air path module and the first air path module, and positive pressure is provided for the second air path module through the air source module so as to output a first preset air flow to the atomization module; the atomizing module is connected with the mist flow treatment module, the mist flow treatment module is respectively connected with the spraying module and the first air path module, the atomizing module atomizes preset liquid through first preset air flow to output atomized air flow, and the atomized air flow is split-flow treated through the mist flow treatment module to output first atomized air flow and second atomized air flow respectively, and the first atomized air flow is sprayed out through the spraying module. The invention can solve the technical problems of difficult atomization of liquid with overlarge concentration or overlarge viscosity and unstable gas quantity control in the prior art.

Description

A kind of pneumatic atomization spraying method and system

Technical field

The invention relates to the field of spraying technology, and in particular to a pneumatic atomization spraying method and system.

Background technique

Traditional aerosol spraying uses ultrasonic atomization. Because of its easy control and good stability, it has a high application rate in high-precision material spraying. However, ultrasonic atomization has higher requirements on the concentration and viscosity of the material. , limiting the application areas of aerosol spraying. In order to enhance the applicability of aerosol spraying and broaden the scope of use, pneumatic atomization can be used to solve the problem of ink being unable to atomize due to excessive material concentration and high viscosity.

However, the existing pneumatic atomization aerosol spraying technology still has technical defects such as unstable mist flow, poor gas volume control and unquantifiable control process during the atomization process.

Therefore, existing spraying systems commonly have technical problems such as difficulty in atomizing liquids with excessive concentration or high viscosity and unstable gas volume control.

Contents of the invention

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a pneumatic atomization spraying method and system, aiming to solve the technical problems in the prior art of difficulty in atomizing liquids with excessively high concentrations or viscosities and unstable gas volume control.

One aspect of the present invention is to provide a pneumatic atomization spraying system, which includes:

Air source module, second air path module, first air path module, atomization module, mist flow processing module and spray module;

The air source module is respectively connected to the second air path module and the first air path module, and provides positive pressure to the second air path module through the air source module to pass through the second air path module. Output a first preset airflow to the atomization module;

The output end of the atomization module is connected to the mist flow processing module, and the output end of the mist flow processing module is respectively connected to the spraying module and the first air path module. The atomization module passes through the first preset The airflow atomizes the preset liquid to output the atomized airflow to the mist flow processing module, and performs split processing on the atomized airflow through the mist flow processing module to output the first atomized airflow and the first atomized airflow respectively. A second atomized air flow, wherein the first atomized air flow is sprayed through the spray module, and the second atomized air flow provides negative pressure to the first air path module through the air source module, so that The second atomized gas flow is output to the air source module through the first gas path module.

Compared with the prior art, the beneficial effects of the present invention are as follows: the pneumatic atomization spray system provided by the present invention is specifically, the pneumatic atomization spray system includes an air source module, a second air circuit module, a first air circuit module, an atomization module, a mist flow processing module and a spraying module, the air source module is respectively connected to the second air circuit module and the first air circuit module, and positive pressure is provided to the second air circuit module through the air source module, so as to output a first preset airflow to the atomization module through the second air circuit module; the output end of the atomization module is connected to the mist flow processing module, and the output end of the mist flow processing module is respectively connected to the spraying module and the first air circuit module, the atomization module atomizes the preset liquid through the first preset airflow to output the atomized airflow to the mist flow processing module, without the need for ultrasonic atomization, and the preset liquids of different viscosities and concentrations can be atomized and adjusted to the best atomization effect by controlling the flow rate and pressure of the first preset airflow, and the application range is wide and avoids Ultrasonic atomization has high requirements for the concentration and viscosity of materials, which makes it difficult to atomize liquids with too high concentration or viscosity, and the atomized airflow is diverted through the atomized airflow processing module to output the first atomized airflow and the second atomized airflow respectively, wherein the first atomized airflow is sprayed through the spraying module, and the second atomized airflow provides negative pressure to the first air path module through the air source module, so that the second atomized airflow is output to the air source module through the first air path module, and the second atomized airflow is controlled independently by the second air path module and the first air path module, thereby reducing the interference of the second atomized airflow on the first atomized airflow, and improving the stability of the first atomized airflow, so that the first atomized airflow can be sprayed more accurately and stably, and the pressure and flow adjustment of the second air path module and the first air path module further reduces the interference of the second atomized airflow on the first atomized airflow, and improves the accuracy and stability of the first atomized airflow spraying, and the whole system is simple in design and low in cost. Thus, the technical problems of the difficulty of atomizing liquids with too high concentration or too high viscosity and the unstable gas volume control are solved.

According to one aspect of the above technical solution, the first gas path module includes a first first-stage pressure valve, a first second-stage pressure tank, a first second-stage pressure valve and a first second-stage regulating valve, which are connected in sequence. A first-level pressure valve is connected to the air source module, and the first second-level control valve is connected to the mist flow processing module. Negative pressure is provided through the air source module so that the second atomized air flow passes through the mist flow processing module in sequence. The first two-stage regulating valve, the first two-stage pressure valve, the first two-stage pressure tank and the first one-stage pressure valve are output to the air source module.

According to an aspect of the above technical solution, the second gas path module includes a second first-stage pressure valve connected to the air source module and a second second-stage regulating valve connected to the second first-stage pressure valve. The second two-stage pressure regulating valve is connected to the atomization module, and positive pressure is provided through the air source module, so that the first preset air flow passes through the second one-stage pressure valve and the second two-stage regulating valve in sequence. Valve output to the atomization module.

According to an aspect of the above technical solution, the air source module includes a first-level negative pressure air source and a first-level positive pressure air source, and the first-level negative pressure air source is connected to the first air path module for supplying The first gas circuit module provides negative pressure, and the first-level positive pressure air source is connected to the second gas circuit module to provide positive pressure to the second gas circuit module.

According to one aspect of the above technical solution, the mist flow processing module includes a mist flow diverting device and a mist flow processing device connected to the mist flow diverting device, and the input end of the mist flow diverting device is connected to the atomization module, so The mist flow dividing device divides the atomized air flow and outputs the first atomized air flow and the second atomized air flow obtained by the division to the first channel and the second channel respectively, and the first atomized air flow passes through the The first channel is output to the spray module, and the second atomized airflow is output to the first gas path module through the second channel.

According to one aspect of the above technical solution, the output end of the mist flow treatment device is connected to the first secondary control valve, the input end of the mist flow treatment device is connected to the second channel, and the second atomized air flow After being output to the mist flow processing device through the second channel for pretreatment, it is transported to the first gas path module.

According to one aspect of the above technical solution, the pneumatic atomization spraying system further includes a third gas path module, the third gas path module includes a third first-stage pressure valve connected to the first-stage positive pressure air source, and A third secondary monitor is connected to the third primary pressure valve, the output end of the third secondary monitor is connected to the spray module, and positive pressure is provided through the primary positive pressure air source. Two preset air flows are output to the spraying module through the third primary pressure valve and the third secondary monitor.

According to an aspect of the above technical solution, the second gas path module further includes a second secondary monitor, the first gas path module further includes a first secondary monitor, the second secondary monitor and the The first and second level monitors are respectively used to measure the flow rates of the first preset air flow and the second atomized air flow.

Another aspect of the present invention is to provide a pneumatic atomization spraying method, which is implemented by using any of the pneumatic atomization spraying systems described above, and the method comprises:

The control air source module provides positive pressure to the second air path module, so that the second air path module outputs the first preset air flow to the atomization module;

Based on the first preset air flow, control the atomization module to atomize the preset liquid and output the atomized air flow to the mist flow processing module;

The atomized airflow is split through the mist flow processing module to output the first atomized airflow and the second atomized airflow respectively;

The spraying module is controlled to spray out the first atomized gas flow, and the gas source module is controlled to provide negative pressure to the first gas path module, so that the second atomized gas flows through the first gas path module and is output to the gas source module.

According to an aspect of the above technical solution, the method further includes:

The air source module is controlled to provide positive pressure to the third air path module, so that a second preset air flow is output to the spraying device through the third air path module.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is a structural block diagram of the pneumatic atomization spray system in the first embodiment of the present invention;

Figure 2 is a schematic structural diagram of the pneumatic atomization spray system in the first embodiment of the present invention;

Figure 3 is a specific structural schematic diagram of the pneumatic atomization spray system in the first embodiment of the present invention;

FIG4 is a schematic structural diagram of a pneumatic atomization spray system in a second embodiment of the present invention;

5 is a schematic structural diagram of a pneumatic atomization spray system in a third embodiment of the present invention;

6 is a flow chart of a pneumatic atomization spraying method in a fourth embodiment of the present invention;

Description of component symbols in the attached drawings:

The air source module 100, the second air path module 200, the first air path module 300, the atomization module 400, the mist flow processing module 500, the spraying module 600, and the third air path module 700.

Detailed ways

In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Several embodiments of the invention are shown in the drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. As used herein, the terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions are for illustrative purposes only and do not indicate or imply the intended device or Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

In the present invention, unless otherwise expressly stipulated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrally connected; 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 an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Embodiment 1

Please refer to Figures 1 to 3, which show a pneumatic atomization spraying system provided by the present invention. The pneumatic atomization spraying system includes an air source module 100, a second air path module 200, a first air path module 300, Atomization module 400, mist flow processing module 500 and spraying module 600. Among them, the air source module 100 is used to provide air pressure to the second air path module 200 and the first air path module 300. The air source module 100 includes a first-level negative pressure air source and a first-level positive pressure air source. The first-level negative pressure air source Connected to the first gas path module 300 for providing negative pressure to the first gas path module 300, so as to stably output the second atomized air flow to the first-level negative pressure air source through the first gas path module 300, the first-level The positive pressure air source is connected to the second air path module 200 for providing positive pressure to the second air path module 200 to output the first preset air flow to the atomization module 400 through the second air path module 200 .

The second gas path module 200 includes a second first-stage pressure valve connected to the air source module 100 and a second second-stage regulating valve connected to the second first-stage pressure valve. The input end of the second first-stage pressure valve is connected to the first-stage pressure valve. Positive pressure air source, the output end of the second secondary control valve is connected to the atomization module 400. Positive pressure is provided through the air source module 100 so that the first preset air flow is sequentially output to the atomization module 400 through the second primary pressure valve and the second secondary regulating valve. The second primary pressure valve controls the entire second air path. The total air pressure of the module 200 maintains the stability of the first preset air flow of the second air path module 200 . The second two-level regulating valve regulates the flow rate of the first preset air flow of the second gas path module 200. In addition, the second gas path module 200 also includes a second two-level monitor. In this embodiment, the second two-level monitor The monitor is a second digital flow meter. The second digital flow meter is installed between the second secondary control valve and the atomization module 400. The second digital flow meter detects the first flow rate in the second gas path module 200 in real time. The flow value of the preset air flow is used with the second secondary regulating valve to adjust the flow rate of the first preset air flow of the second air path module 200 to achieve accurate and stable control of the first preset air flow, thereby achieving accurate and stable flow of the first preset air flow. and pressure are delivered to the atomization module 400 to improve the atomization effect of the atomization module 400. The second-stage pressure valve and the second-stage regulating valve have continuous adjustment and locking functions to improve the stability of the first preset air flow. The second-stage pressure valve includes but is not limited to positive pressure reducing valves. pressure valve, positive pressure stabilizing valve, flow valve, flow meter, CNC gas flow meter, etc.

Further, the atomization module 400 is used to atomize the preset liquid through the first preset air flow. The atomization module 400 includes an atomization device and the preset liquid stored in the atomization device. In this embodiment, the The preset liquid can be an aerosol. The atomization device is provided with an air outlet pipe and an air inlet pipe inserted into the preset liquid. The air inlet of the air inlet pipe is inserted into the preset liquid stored in the atomization device. The outlet of the air outlet pipe The air port is connected to the mist flow diversion device. The first preset air flow is output to the preset liquid through the second air path module 200 and the air inlet pipe. The atomization device will mist the preset liquid according to the flow rate and pressure of the first preset air flow. The atomized airflow is formed, and the atomizing effect of the atomized airflow depends on the flow rate and pressure of the first preset airflow. Among them, the atomization device can be a collision atomizer, and the collision atomizer uses an aerosolization method to atomize the preset liquid. When the first preset airflow enters from the air inlet, the drop in pressure causes the liquid to rise after passing through the pipeline. Then the preset liquid is broken up and atomized by the high-speed first preset airflow to produce droplets with a wide range of particle sizes. This atomized liquid is then impacted against the wall of the tank, and then smaller droplets are produced and are brought out from the air outlet by the first preset air flow to form an atomized air flow. It should be noted that by adjusting the second stage pressure valve The pressure and flow rate of the first preset air flow of the second stage control valve can atomize preset liquids of different viscosities and concentrations. It can be widely used in materials of different concentrations and viscosities to avoid the influence of ultrasonic atomization on the concentration of materials. , viscosity and other requirements are high, and it is difficult to atomize liquids with too high concentration or too high viscosity. At the same time, the best atomization effect of the atomized air flow can also be achieved by adjusting the pressure and flow rate of the first preset air flow of the second-stage pressure valve and the second-stage regulating valve to achieve precise and stable control of the atomization effect. , improve the gas volume control of atomization.

In addition, the air outlet of the atomization device outputs the atomized air flow to the mist flow processing module 500, and the mist flow processing device is used to divide the atomized air flow. The mist flow processing module 500 includes a mist flow diverting device and a mist flow processing device connected to the mist flow diverting device. The input end of the mist flow diverting device is connected to the air outlet pipe of the atomizing device. Since the flow rate of the atomized air flow is very large, the spraying module 600 The required flow rate of the atomized air flow is very small, so the atomized air flow needs to be split, and the atomized air flow is divided into large flux tributaries and small flux tributaries. The small flux tributaries enter the spraying module 600 to complete the spraying. The flow splitting device will split the atomized air flow and output the first atomized air flow and the second atomized air flow obtained by the split to the first channel and the second channel respectively. The first channel outputs the first atomized air flow, that is, the small Flux branch, the first channel is connected to the spray module 600, the first atomized air flow is output to the spray module 600 through the first channel, and the spraying of the first atomized air flow is completed through the spray module 600.

Further, the output end of the mist flow treatment device is connected to the first secondary regulating valve, the input end of the mist flow treatment device is connected to the second channel, and the second atomized air flow, that is, the large-flux branch, is output to the mist flow treatment through the second channel After the device is pre-processed, it is output to the first-level negative pressure air source through the first gas path module 300. The mist flow treatment device can have functions such as drying, filtration, recovery, and impurity removal, and is selected according to the material of the preset liquid. Pretreatment mist flow treatment device. For example, the large particulate matter contained in the second atomized air flow can be removed through the filtration function of the mist flow processing device to prevent the large particulate matter in the second atomized air flow from being input into the second gas path module 200. Level 1 When the negative pressure air source discharges the second atomized air flow through the air pump, large particles cause the air pump to be clogged, causing the second atomized air flow to be unable to be discharged, affecting the spraying of the first atomized air flow, or through the recovery function of the mist flow treatment device. The preset liquid in the second atomized air flow is recycled and reused to save costs and avoid waste of the preset liquid.

The second atomized air flow is pre-processed and output to the first gas path module 300. The first gas path module 300 is used to stably output the pre-processed second atomized gas flow to the first-level negative pressure air source. The first gas circuit module 300 includes a first-stage pressure valve, a first-stage pressure tank, a first-stage pressure valve, and a first stage-stage regulating valve connected in sequence. The first-stage pressure valve is connected to a stage of negative pressure gas. source, the first two-stage regulating valve is connected to the mist flow processing module 500, and the negative pressure is provided through the primary negative pressure air source, so that the second atomizing air flow passes through the first two-stage regulating valve, the first two-stage pressure valve, and The first and second-stage pressure tanks and the first-stage pressure valve are output to the first-stage negative pressure air source. The first-stage pressure valve is set upstream of the first-stage negative pressure air source to control the pressure of the air source. The pressure tank is arranged between the first-stage pressure valve and the first-secondary pressure valve, and the second atomized air flow flows into the first and second-stage pressure tank to act as a buffer to stabilize the air pressure of the second atomized air flow. The volume of the first and secondary pressure tanks is greater than or equal to 0.5L, and the number is at least one. In this embodiment, the first and secondary pressure tanks are two 5L pressure tanks, used to stabilize the air pressure of the first gas path module 300 . Through the settings of the first-stage pressure valve, the first-stage pressure tank, and the first stage-stage pressure valve, the air pressure of the first air path module 300 can be accurately and stably controlled, thereby not affecting the first atomization in the first channel. The stability of the air pressure of the air flow thereby improves the spraying effect of the first atomizing air flow. This prevents the unstable air pressure of the first air path module 300 from causing the unstable air pressure of the first atomizing air flow and affecting the spraying effect. In addition, the setting of the first secondary regulating valve is used to adjust and control the gas flow rate of the second atomizing gas flow in the first gas path module 300. By selecting and setting the components of the second gas path module 200, the control of the second gas path module 200 is realized. The second atomization air flow is precise and stable control of large-flux mist flow. Among them, the first-stage pressure valve, the first-stage pressure valve and the first-stage regulating valve have the functions of continuous adjustment and locking to improve the stability of the flow of the second atomized air flow. The first-stage pressure valve The first and second-stage pressure valves include but are not limited to positive pressure reducing valves, positive pressure stabilizing valves, flow valves, flow meters, CNC gas flow meters, etc.

In addition, the second gas circuit module 200 also includes a first and second-level monitor. In this embodiment, the first and second-level monitor is a first digital flow meter. The first digital flow meter is configured between the first and second-level control valves. Between the mist flow processing devices, the first digital flow meter is used to detect the flow rate of the second atomization air flow in real time, and is used with the first two-stage control valve to adjust the flow rate of the second atomization air flow of the first air path module 300 to complete the second mist. The precise and stable control of the atomized air flow enables the accurate and stable flow of the second atomized air flow to be output to the first-level negative pressure air source without affecting the flow of the first atomized air flow in the first channel, thus improving the spraying effect of the first atomized air flow.

In addition, the pneumatic atomization spraying system also includes a third gas path module 700. The third gas path module 700 is used to increase the spraying stability of the spraying module 600. The input end of the third gas path module 700 is connected to a first-level positive pressure. Air source, the output end of the third air path module 700 is connected to the spray module 600, the spray module 600 is used to spray the first atomized air flow, the spray module 600 includes a nozzle, the first atomized air flow is sprayed through the nozzle, the third air path module 700 includes a third-level pressure valve connected to the first-level positive pressure air source and a third-level monitor connected to the third-level pressure valve. In this embodiment, the third-level monitor is the third number. Flow meter, wherein the third stage pressure valve is used to control the total air pressure of the entire third air path module 700, and the third digital flow meter is used to detect the flow rate of the second preset air flow in real time, provided by the first level positive pressure air source. Positive pressure, the second preset air flow is delivered to the spray module 600 through the third stage pressure valve and the third digital flow meter, so that the first atomized air flow and the second preset air flow intersect and enter the spray module 600, thereby making the first The atomized airflow can spray more accurately and stably to increase the spraying stability of the first atomized airflow. By accurately controlling the flow rate and air pressure of the second preset airflow, the spraying of the first atomized airflow can be more accurate and stable. , among which, the third-stage pressure valve has the functions of continuous adjustment and locking to improve the stability of the flow of the second preset air flow. The third-stage pressure valve includes but is not limited to a positive pressure reducing valve, a positive pressure stabilizing valve, and a positive pressure reducing valve. Pressure valve, flow valve, flow meter, CNC gas flow meter, etc. Through the three independent air flow control modules of the second air path module 200, the first air path module 300 and the third air path module 700, the interference between the air paths is reduced, making spraying more stable and accurate.

As a specific example, in this embodiment, the optional components of the first gas circuit module 300 are respectively the first primary pressure valve is equipped with a negative pressure reducing valve, the first secondary pressure tank is equipped with two 5L pressure tanks, the first secondary pressure valve is equipped with a negative pressure reducing valve, the first secondary monitor is equipped with a digital flow meter, and the first secondary regulating valve is equipped with a negative pressure flow valve. In the flow direction of the second atomizing gas flow, the arrangement order of the components is digital flow meter, negative pressure flow valve, negative pressure reducing valve, 5L pressure tank, 5L pressure tank, negative pressure reducing valve;

The optional components of the second gas circuit module 200 are respectively a positive pressure reducing valve for the second stage pressure valve, a positive pressure flow valve for the second stage regulating valve, and a digital flow meter for the second stage monitor. . In the first preset air flow direction, the installation order of each component is positive pressure reducing valve, positive pressure flow valve, and digital flow meter;

The optional components of the third gas circuit module 700 are the third first-stage pressure relief valve with a positive pressure relief valve, the third second-stage regulating valve is discarded, and the third second-stage monitor is equipped with a digital flow meter. In the second preset airflow direction, the arrangement order of the components is positive pressure relief valve, digital flow meter. The mist flow processing module 500 includes mist flow diversion, drying, filtration, and recovery;

Through the precise and stable control and cooperation of the first gas path module 300, the second gas path module 200, and the third gas path module 700, the aerosol mist flow generated by the pneumatic atomization system is accurately, stably, and finely sprayed through the spray module 600. out.

Compared with the existing technology, this embodiment provides a pneumatic atomization spraying system that has the beneficial effect that: the pneumatic atomization spraying system includes an air source module, a second air path module, a first air path module, and an atomization module. , mist flow processing module and spraying module, the air source module is connected to the second air path module and the first air path module respectively, and provides positive pressure to the second air path module through the air source module, so as to pass a first air path module through the second air path module. A preset air flow is output to the atomization module; the output end of the atomization module is connected to the mist flow processing module, and the output end of the mist flow processing module is connected to the spray module and the first air path module respectively. The atomization module passes the first preset air flow to The preset liquid is atomized to output the atomized air flow to the mist flow processing module. Ultrasonic atomization is not required. By controlling the flow rate and pressure of the first preset air flow, preset liquids of different viscosities and concentrations can be atomized and processed. It can be adjusted to the best atomization effect and has a wide range of applications. It avoids the difficulty of atomizing liquids with excessive concentration or high viscosity due to the high requirements of ultrasonic atomization on material concentration and viscosity. It can be used through the mist flow processing module The atomized airflow is split to output the first atomized airflow and the second atomized airflow respectively, wherein the first atomized airflow is sprayed through the spray module, and the second atomized airflow passes through the air source module to the first air path. The module provides negative pressure so that the second atomizing gas flow is output to the air source module through the first gas path module. Through the independent air flow control of the second gas path module and the first gas path module, the impact of the second atomizing gas flow on The interference of the first atomizing air flow improves the stability of the first atomizing air flow, so that the spraying of the first atomizing air flow is more accurate and stable. The pressure and flow rate of the second air path module and the first air path module are adjusted. The interference of the second atomizing air flow on the first atomizing air flow is further reduced, and the accuracy and stability of the first atomizing air flow spraying are improved. The entire system is simple in design and low in cost. This solves the technical problems of difficulty in atomizing liquids with excessive concentration or high viscosity and unstable gas volume control.

Embodiment 2

Please refer to FIG. 4 , which shows a pneumatic atomizing spray system provided by a second embodiment of the present invention. The pneumatic atomizing spray system is different from the pneumatic atomizing spray system in the first embodiment in that:

The first secondary pressure tank is a 20L pressure tank. The second digital flow meter is located between the second primary pressure valve and the second secondary regulating valve. The first digital flow meter is located between the first secondary pressure valve and the second secondary regulating valve. Between the first and second control valves, improve the service life of the first digital flow meter and prevent the second atomized air flow from being directly output to the first digital flow meter. Excessive flow fluctuations or sudden rises and falls may cause the first digital flow meter to become sensitive. The temperature decreases, resulting in abnormal flow detection and malfunction. There is a third secondary regulating valve between the third stage pressure valve and the third digital flow meter. The third stage regulating valve is used to control the third stage of the third gas circuit module 700. The flow rate of the second preset air flow is matched with the real-time detection of the flow value of the second preset air flow by the third digital flow meter to complete accurate and stable control of the second preset air flow, thereby accurately and stably controlling the first atomized air flow. Spray.

Specifically, in this embodiment, the optional components of the first gas path module 300 are the first-stage pressure valve and the optional negative pressure reducing valve, the first and second-stage pressure tanks and the optional 20L pressure tank. The secondary pressure valve is equipped with a negative pressure reducing valve, the first and secondary monitors are equipped with a digital flow meter, and the first and secondary regulating valves are equipped with a negative pressure flow valve. In the direction of the second atomized air flow, the order of setting each component is negative pressure flow valve, digital flow meter, negative pressure reducing valve, 20L pressure tank, and negative pressure reducing valve;

The optional components of the second gas path module 200 are respectively a positive pressure stabilizing valve for the second primary pressure relief valve, a positive pressure flow valve for the second secondary regulating valve, and a digital flow meter for the second secondary monitor. In the first preset airflow direction, the arrangement order of the components is positive pressure relief valve, digital flow meter, positive pressure flow valve;

The optional components of the third gas circuit module 700 are: the third-stage pressure valve is equipped with a positive pressure reducing valve, the third-stage regulating valve is equipped with a positive pressure flow valve, and the third-stage monitor is equipped with a digital flow meter. . In the second preset air flow direction, the installation sequence of each component is a positive pressure reducing valve, a positive pressure flow valve, and a digital flow meter. The mist flow processing module 500 includes mist flow diversion, drying, and filtration;

Through the precise and stable control and cooperation of the first gas path module 300, the second gas path module 200, and the third gas path module 700, the aerosol mist flow generated by the pneumatic atomization system is accurately, stably, and finely sprayed through the spray module 600. out.

Compared with the existing technology, this embodiment provides a pneumatic atomization spraying system that has the beneficial effect of atomizing preset liquids of different viscosities and concentrations by controlling the flow rate and pressure of the first preset air flow. It can be processed and adjusted to the best atomization effect. It has a wide range of applications and avoids the difficulty of atomizing liquids with excessive concentration or high viscosity due to the high requirements of ultrasonic atomization on material concentration and viscosity. Through the second gas The independent air flow control of the air path module and the first air path module reduces the interference of the second atomizing air flow on the first atomizing air flow and improves the stability of the first atomizing air flow, so that the first atomizing air flow sprays more efficiently. More accurate and stable, the adjustment of the pressure and flow of the second air path module and the first air path module further reduces the interference of the second atomizing air flow on the first atomizing air flow, improving the accuracy and accuracy of the first atomizing air flow spraying. Stability, the whole system design is simple and low cost. In addition, the first digital flow meter is designed between the first two-stage pressure valve and the first two-stage regulating valve to improve the service life of the first digital flow meter. There is a third secondary regulating valve between the third primary pressure valve and the third digital flow meter. The third secondary regulating valve is used to control the flow rate of the second preset air flow of the third gas path module to pass through the third primary pressure valve and the third digital flow meter. The real-time detection of the flow value of the second preset air flow by the digital flow meter completes the precise and stable control of the second preset air flow, thereby accurately and stably controlling the spraying of the first atomized air flow, thus solving the problem of excessive concentration or excessive viscosity. Technical problems include difficulty in liquid atomization and unstable gas volume control.

Embodiment 3

Please refer to Figure 5, which shows a pneumatic atomization spraying system provided by a third embodiment of the present invention. The differences between the pneumatic atomization spraying system and the pneumatic atomization spraying system in the first embodiment are:

The first and second level pressure tanks are 50L pressure tanks, and the second and second level monitors are located between the first and second level pressure valves and the first and second level control valves to extend the service life of the second and second level monitors and avoid the The second atomized air flow is directly output to the second and second level monitors. Excessive flow fluctuations or sudden rises and falls cause the sensitivity of the second and second level monitors to decrease, resulting in abnormal flow detection and failure. The third level pressure valve is connected to the third level pressure valve. A third secondary control valve is provided between the secondary monitors. The third secondary control valve is used to control the flow rate of the second preset air flow of the third gas path module 700 to pass the real-time communication with the third secondary monitor. Detect the flow value matching of the second preset air flow to achieve precise and stable control of the second preset air flow.

As a specific example, in this embodiment, the optional components of the first gas path module 300 are a negative pressure (vacuum) pressure reducing valve for the first-stage pressure valve, and a 50L pressure tank for the first-stage pressure tank. Pressure tank, the first and second-stage pressure valves are equipped with a negative pressure (vacuum) pressure reducing valve, the first and second-stage monitors are equipped with a digital flow meter, and the first and second-stage regulating valves are equipped with a negative pressure (vacuum) flow valve. In the direction of the second atomized air flow, the order of setting each component is negative pressure (vacuum) flow valve, digital flow meter, negative pressure (vacuum) pressure reducing valve, 50L pressure tank, negative pressure (vacuum) pressure reducing valve ;

The optional components of the second gas circuit module 200 are respectively a positive pressure stabilizing valve for the second stage pressure valve, a positive pressure flow valve for the second stage regulating valve, and a digital flow meter for the second stage monitor. . In the first preset air flow direction, the installation order of each component is positive pressure reducing valve, positive pressure flow valve, and digital flow meter;

The optional components of the third gas circuit module 700 are: the third-stage pressure valve is equipped with a positive pressure reducing valve, the third-stage regulating valve is equipped with a positive pressure flow valve, and the third-stage monitor is equipped with a digital flow meter. . In the second preset air flow direction, the installation sequence of each component is a positive pressure reducing valve, a positive pressure flow meter, and a digital flow meter. The mist flow processing module 500 includes mist flow diversion, drying, filtration, and impurity removal;

Through the precise and stable control and cooperation of the first air path module 300, the second air path module 200, and the third air path module 700, the aerosol mist flow generated by the air flow atomization system is accurately, stably, and finely sprayed through the spraying module 600. out.

Compared with the existing technology, this embodiment provides a pneumatic atomization spraying system that has the beneficial effect of atomizing preset liquids of different viscosities and concentrations by controlling the flow rate and pressure of the first preset air flow. It can be processed and adjusted to the best atomization effect. It has a wide range of applications and avoids the difficulty of atomizing liquids with excessive concentration or high viscosity due to the high requirements of ultrasonic atomization on material concentration and viscosity. Through the second gas The independent air flow control of the air path module and the first air path module reduces the interference of the second atomizing air flow on the first atomizing air flow and improves the stability of the first atomizing air flow, so that the first atomizing air flow sprays more efficiently. More accurate and stable, the adjustment of the pressure and flow of the second air path module and the first air path module further reduces the interference of the second atomizing air flow on the first atomizing air flow, improving the accuracy and accuracy of the first atomizing air flow spraying. Stability, the whole system design is simple, and the cost is low. The second and second level monitors are located between the first and second level pressure valves and the first and second level control valves to increase the service life of the second and second level monitors. There is a third secondary regulating valve between the pressure valve and the third secondary monitor. The third secondary regulating valve is used to control the flow rate of the second preset air flow of the third gas path module to pass through the third secondary regulating valve. The monitor's real-time detection of the flow value of the second preset air flow completes the precise and stable control of the second preset air flow, thereby accurately and stably controlling the spraying of the first atomized air flow, thereby solving the problem of excessive concentration or excessive viscosity. Technical problems include difficulty in liquid atomization and unstable gas volume control.

Embodiment 4

Please refer to Figure 6, which shows a fourth embodiment of the present invention providing a pneumatic atomization spraying method. The control method includes steps S10-S13:

Step S10, control the air source module to provide positive pressure to the second air path module, so that the second air path module outputs the first preset air flow to the atomization module;

Specifically, the air source module is used to provide air pressure to the second air circuit module and the first air circuit module. The air source module includes a first-level negative pressure air source and a first-level positive pressure air source. The first-level positive pressure air source is connected to the second air circuit module to provide positive pressure to the second air circuit module so that the second air circuit module outputs airflow to the atomization module.

Wherein, the second gas circuit module includes a second first-level pressure valve and a second second-level control valve connected to the second first-level pressure valve. The input end of the second first-level pressure valve is connected to a first-level positive pressure air source. The output end of the secondary control valve is connected to the atomization module. Positive pressure is provided through the primary positive pressure air source, so that the first preset air flow is output to the atomization module through the second primary pressure valve and the second secondary regulating valve in sequence. The second primary pressure valve controls the entire second air flow. The total air pressure of the circuit module. The second secondary regulating valve regulates the flow rate of the first preset air flow of the second gas path module. In addition, the second gas path module also includes a second secondary monitor, and the second secondary monitor detects the second gas flow in real time through the second secondary monitor. The flow value of the first preset air flow in the air path module is used in conjunction with the second secondary control valve to adjust the flow rate of the first preset air flow in the second air path module to achieve precise and stable control of the first preset air flow and achieve the first The preset airflow accurately and stably delivers the flow and pressure to the atomization module to improve the atomization effect of the atomization module.

Step S11, based on the first preset airflow, controlling the atomization module to atomize the preset liquid and output the atomized airflow to the mist flow processing module;

Among them, the atomization module includes an atomization device and a preset liquid arranged in the atomization device. The atomization device is provided with an air outlet and an air inlet inserted into the preset liquid. The first preset airflow is output to the air inlet through the second air path module to contact the preset liquid. The atomization device will atomize the preset liquid to form an atomized airflow according to the flow rate and pressure of the first preset airflow. The atomization effect of the atomized airflow depends on the flow rate and pressure of the first preset airflow.

It should be noted that by adjusting the pressure and flow rate of the first preset air flow of the second stage pressure valve and the second stage control valve, preset liquids of different viscosities and concentrations can be atomized, and can be widely used in different concentrations. and viscosity materials, avoid ultrasonic atomization, which has high requirements on the concentration and viscosity of the material. It is difficult to atomize liquids with too high concentration or too high viscosity. At the same time, the best atomization effect of the atomized air flow can also be achieved by adjusting the pressure and flow rate of the first preset air flow of the second-stage pressure valve and the second-stage regulating valve to achieve precise and stable control of the atomization effect. , improve the gas volume control of atomization.

Step S12, perform splitting processing on the atomized airflow through the mist flow processing module to output the first atomized airflow and the second atomized airflow respectively;

Among them, the mist flow processing device is used to divert the atomized air flow. The mist flow processing module includes a mist flow splitting device and a mist flow processing device connected to the mist flow splitting device. The mist flow splitting device will split the atomized air flow and separate the first atomized air flow and the second atomized air flow obtained by the splitting. Output to the first channel and the second channel, wherein the first channel output is the first atomized air flow, and the second channel output is the second atomized air flow.

Step S13, control the spraying module to eject the first atomized airflow, and at the same time control the air source module to provide negative pressure to the first air path module so that the second atomized air flows through the first air path The module output is to the air source module.

The first channel is connected to the spraying module, the first atomized airflow is output to the spraying module through the first channel, and the spraying of the first atomized airflow is completed through the spraying module. At the same time, the second atomized air flow is output to the mist flow processing device through the second channel for pretreatment, and then transported to the first gas path module. The mist flow processing device can have functions such as drying, filtration, recovery, and impurity removal. According to A mist flow processing device that pre-processes the material of the preset liquid required for rotation.

In addition, the first gas circuit module includes a first-stage pressure valve, a first-stage pressure tank, a first-stage pressure valve, and a first-stage regulating valve that are connected in sequence. The first-stage pressure valve is connected to a stage of negative pressure. Air source, the first two-stage regulating valve is connected to the mist flow processing module, and negative pressure is provided through the primary negative pressure air source, so that the second atomizing air flow passes through the first two-stage regulating valve, the first two-stage pressure valve, and The first secondary pressure tank and the first primary pressure valve are output to the primary negative pressure air source, where the first primary pressure valve is arranged in the direction of air flow and close to the upstream of the primary negative pressure air source to control the air flow. source pressure, the first and second-stage pressure tanks are arranged between the first and second-stage pressure valves, and the second atomized air flow flows into the first and second-stage pressure tanks to act as a buffer to stabilize the second The air pressure of the second atomizing air flow can accurately and stably control the air pressure of the first air path module through the settings of the first-stage pressure valve, the first-stage pressure tank, and the first-stage pressure valve, thereby not affecting the first stage. The stability of the air pressure of the first atomizing air flow in the channel thereby improves the spraying effect of the first atomizing air flow. This prevents the unstable air pressure of the first air path module from causing unstable air pressure of the first atomizing air flow, which affects the spraying effect. In addition, the setting of the first two-stage regulating valve is used to adjust and control the gas flow rate of the second atomizing air flow in the first gas path module. Through the selection and setting of the components of the second gas path module, the control of the second atomization gas flow is realized. Accurate and stable control of chemical air flow.

It should be noted that the control method also includes: controlling the air source module to provide positive pressure to the third air path module, so that a second preset air flow is output to the spraying device through the third air path module.

Specifically, the third gas circuit module is used to increase the spraying stability of the spray module, the input end of the third gas circuit module is connected to the first-level positive pressure gas source, the output end of the third gas circuit module is connected to the spray module, the spray module is used to spray the first atomizing gas flow, the spray module includes a nozzle, the first atomizing gas flow is sprayed out through the nozzle, the third gas circuit module includes a third first-level pressure valve connected to the first-level positive pressure gas source and a third-level second-level monitor connected to the third first-level pressure valve, wherein the third first-level pressure valve is used to control the total air pressure of the entire third gas circuit module, and the third-level second-level monitor is used to detect the flow rate of the second preset airflow in real time, through the first-level positive pressure The compressed air source provides positive pressure, and the second preset airflow is delivered to the spray module through the third first-stage pressure valve and the third-stage second-stage monitor, so that the first atomizing airflow and the second preset airflow intersect and enter the spray module, so that the first atomizing airflow can be sprayed more accurately and stably to increase the spraying stability of the first atomizing airflow. By accurately controlling the flow rate and air pressure of the second preset airflow, the spraying of the first atomizing airflow is made more accurate and stable. Through the three independent airflow control modules of the second air path module, the first air path module and the third air path module, the interference between the air paths is reduced, making the spraying more stable and accurate.

Compared with the existing technology, the beneficial effect of the pneumatic atomization spraying method provided by this embodiment is: through the pneumatic atomization spraying method provided by the invention, specifically, the pneumatic module air source module is controlled to provide positive pressure to the second The gas path module enables the second gas path module to output the first preset air flow to the atomization module; based on the first preset air flow, the atomization module is controlled to atomize the preset liquid and output the atomization air flow to the mist flow processing module , without ultrasonic atomization, through the control of the flow and pressure of the first preset air flow, preset liquids of different viscosities and concentrations can be atomized and adjusted to the best atomization effect. It has a wide range of applications and avoids Ultrasonic atomization has high requirements on the concentration and viscosity of materials, making it difficult to atomize liquids with too high concentrations or too high viscosity; the atomized air flow is split through the mist flow processing module to output the first atomized air flow and the The second atomized air flow; the spray module is controlled to eject the first atomized air flow, and the air source module is controlled to provide negative pressure to the first air path module, so that the second atomized air flow is output to the air source through the first air path module. module, through the independent air flow control of the second air path module and the first air path module, the interference of the second atomizing air flow on the first atomizing air flow is reduced, and the stability of the first atomizing air flow is improved, so that the second atomizing air flow can The first atomized airflow sprays more accurately and stably. The adjustment of the pressure and flow of the second airway module and the first airway module further reduces the interference of the second atomized airflow on the first atomized airflow and improves the first atomization. The accuracy and stability of airflow spraying and the simple control method effectively improve the accuracy and stability of the first atomized airflow spraying. This solves the technical problems of difficulty in atomizing liquids with excessive concentration or high viscosity and unstable gas volume control.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims (10)

1. A pneumatic atomizing spray system, the pneumatic atomizing spray system comprising:

The spraying device comprises an air source module, a second air path module, a first air path module, an atomization module, a mist flow treatment module and a spraying module;

the air source module is respectively connected with the second air path module and the first air path module, and positive pressure is provided for the second air path module through the air source module so as to output a first preset air flow to the atomization module through the second air path module;

the output end of the atomizing module is connected with the mist flow treatment module, the output end of the mist flow treatment module is respectively connected with the spraying module and the first air path module, the atomizing module atomizes preset liquid through a first preset air flow to output atomized air flow to the mist flow treatment module, and the atomized air flow is split through the mist flow treatment module to output first atomized air flow and second atomized air flow respectively, wherein the first atomized air flow is sprayed out through the spraying module, the second atomized air flow is supplied with negative pressure through the air source module to the first air path module, so that the second atomized air flow is output to the air source module through the first air path module.

2. The pneumatic atomizing spray system of claim 1, wherein the first air path module includes a first primary pressure valve, a first secondary pressure tank, a first secondary pressure valve, and a first secondary pressure regulating valve connected in sequence, the first primary pressure valve is connected to the air source module, the first secondary pressure valve is connected to the mist stream processing module, and a negative pressure is provided by the air source module to cause the second atomizing air flow to be output to the air source module sequentially through the first secondary pressure valve, the first secondary pressure tank, and the first primary pressure valve.

3. A pneumatic atomizing spray system as set forth in claim 2, wherein said second air circuit module includes a second primary pressure valve connected to said air source module and a second secondary pressure valve connected to said second primary pressure valve, said second secondary pressure valve being connected to said atomizing module, positive pressure being provided by said air source module to cause said first predetermined air flow to be output to said atomizing module sequentially through said second primary pressure valve and said second secondary pressure valve.

4. A pneumatic atomizing spray system as set forth in claim 1, wherein said air supply module includes a primary negative pressure air supply connected to said first air circuit module for providing negative pressure thereto and a primary positive pressure air supply connected to said second air circuit module for providing positive pressure thereto.

5. The pneumatic atomizing spray system of claim 3, wherein the mist flow treatment module comprises a mist flow splitting device and a mist flow treatment device connected with the mist flow splitting device, wherein an input end of the mist flow splitting device is connected with the atomizing module, the mist flow splitting device splits the atomized air flow and enables a first atomized air flow and a second atomized air flow obtained by splitting to be respectively output to a first channel and a second channel, the first atomized air flow is output to the spray module through the first channel, and the second atomized air flow is output to the first air path module through the second channel.

6. The pneumatic atomizing spray system of claim 5, wherein an output end of the mist stream treatment device is connected to the first secondary regulator, an input end of the mist stream treatment device is connected to the second channel, and the second atomized air stream is sent to the first air path module after being output to the mist stream treatment device through the second channel for pretreatment.

7. A pneumatic atomizing spray system as set forth in claim 4, further comprising a third air circuit module including a third primary pressure valve connected to said primary positive pressure air source and a third secondary monitor connected to said third primary pressure valve, an output of said third secondary monitor being connected to said spray module, positive pressure being provided by said primary positive pressure air source, a second predetermined air flow being output to said spray module by said third primary pressure valve and said third secondary monitor.

8. A pneumatic atomizing spray system as set forth in claim 6, wherein said second air circuit module further comprises a second secondary monitor, said first air circuit module further comprising a first secondary monitor, said second secondary monitor and said first secondary monitor being for measuring the flow rate of said first preset air stream and said second atomized air stream, respectively.

9. A pneumatic atomizing spray method, characterized in that the method is implemented with a pneumatic atomizing spray system according to any one of the preceding claims 1-8, the method comprising:

the control air source module provides positive pressure for the second air path module so that the second air path module outputs a first preset air flow to the atomization module;

based on the first preset air flow, controlling the atomization module to atomize preset liquid and outputting atomized air flow to a mist flow treatment module;

the atomized air flow is subjected to split flow treatment through the mist flow treatment module so as to output a first atomized air flow and a second atomized air flow respectively;

and controlling the spraying module to spray the first atomized air flow, and simultaneously controlling the air source module to provide negative pressure for the first air path module so that the second atomized air flow passes through the first air path module and is output to the air source module.

10. A pneumatic atomizing spray process as set forth in claim 9, wherein said spray process further comprises:

and controlling the air source module to provide positive pressure for the third air path module so that a second preset air flow passes through the third air path module and is output to the spraying system.