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Spraying method with controllable spraying amount

A technology of spray control and spray volume, applied in the direction of injection devices, etc., can solve the problems of wasting energy, affecting production, and large investment in equipment, and achieves the effects of uniform horizontal distribution, increased production, and simple equipment

Inactive Publication Date: 2006-06-21
ZHEJIANG HUAZHANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its atomization effect depends on the liquid flow, pressure and nozzle design, so it is difficult to be used for stepless control. When used for horizontal partition control, it often requires a combination of nozzles with different spray volumes to achieve graded control.
The other is the gas-liquid mixed spray method, the spray pressure is provided by compressed air, the spray volume can be controlled steplessly, and a single nozzle can be used for horizontal partition control to achieve stepless control , the problem is that when the spray volume changes, the particle size of the spray is actually unstable due to the change of the gas-liquid volume ratio
[0003] For horizontal partition control, no matter which of the above-mentioned spray methods is used, it is necessary to control the amount of liquid applied in partitions before entering the nozzle, and then try to ensure the atomization effect. In this way, each partition needs to be equipped with a set of liquid phase nozzles Or a set of gas-liquid nozzles, the equipment investment is relatively large, and the failure rate of nozzle clogging is high; and, due to the control accuracy of the control elements, these two methods all have defects that cannot meet the requirements for precise control of micro-spray, for example, It is difficult to achieve precise control when the spray volume is below 30ml / min
The direct negative consequences brought by this defect are obvious. For the printing and dyeing industry, it will cause waste of expensive auxiliary agents and increase production costs; Excessive spraying of water first and then subsequent drying will not only affect the output, but also waste energy

Method used

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  • Spraying method with controllable spraying amount
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  • Spraying method with controllable spraying amount

Examples

Experimental program
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Effect test

Embodiment 1

[0016] In the spraying method with controllable spray volume, the spraying system adopted is composed of atomizing device, dilution and delivery device, spraying and control device. see figure 1 , the atomization device contains a liquid storage tank 1, a pump 2, a control valve 3, flow meters 4, 8, a controller 15, compressed air 16 and an atomizer 7, and the liquid in the liquid storage tank 1 is controlled by the pump through the control valve 3 2 pumped out together with the compressed air 16 into the atomizer 7, the flowmeters 4 and 8 are respectively connected to the atomization inlet and outlet of the atomizer 7, and the controller 15 is connected to the flowmeters 4, 8 and the control valve 3. The diluting and transporting device contains a blower 5 and an air filter 6, and the wind generated by the blower 5 is filtered by the air filter 6 and sent to the atomizer 7. The spraying and control device includes a control valve cabinet 9, a control cabinet 10, a partition ...

Embodiment 2

[0025] The spraying and control steps of the present embodiment adopt the mode of decentralized control, and the spraying control valve is a partition spraying valve 20, and the spraying valve 20 of its control partition spraying is directly installed in the spray box 29 of the spraying site, according to the automatic or automatic control of the control cabinet 10 Manually set the value 21, respectively control the spray valves 20 of each zone through the pneumatic signal tube bundle / electric control cable bundle 19, so as to control and adjust the spray volume of each zone. The difference between this embodiment and Embodiment 1 is that the control mode is different, and other operation steps are all the same.

[0026]The spraying and control device in the spraying system that this embodiment adopts is different from embodiment 1, others are the same, see specifically figure 2 . The control signal of the control cabinet 10 directly controls the partition spray valve 20 ins...

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Abstract

The invention discloses a spraying method with controllable spraying volume, which is used in occasions requiring precise divisional control of the spraying volume, such as the spraying of auxiliary agents such as wide-width paper machines and printing and dyeing machines. The spraying method adopts the mode of wind-delivered mist, including the atomization step, and atomizes the liquid to be sprayed in the form of gas-liquid spray / liquid spray under the optimal atomization condition; atomized liquid; it is characterized in that: the conveying step contains dilution, and the atomized liquid is mixed and diluted with air in the atomizer in proportion; the spraying method also includes spraying and control steps, which are controlled by the control cabinet The spray control valve and spray box spray the atomized gas-liquid mixture to the spray carrier, and control the spray control valves in each area according to the set value of the control cabinet to adjust and control the spray volume of each zone of the spray box. The invention overcomes the deficiencies in the prior art, can realize precise control of sub-area micro-spray, and is economical in investment and convenient in control.

Description

technical field [0001] The invention relates to a spraying method, in particular to a spraying method with controllable spraying volume, which is used in occasions requiring precise partition control of horizontal spraying volume, such as the spraying of auxiliary agents such as wide-width paper machines and printing and dyeing machines. Background technique [0002] There are two broad categories of spraying methods available. One is liquid-phase spray, which uses the pressure of the liquid and the design of the nozzle to form atomization due to the sudden drop in pressure when the liquid leaves the spray head. Its atomization effect depends on the liquid flow, pressure and nozzle design, so it is difficult to be used for stepless control. When used for horizontal partition control, it often requires a combination of nozzles with different spray volumes to achieve graded control. The other is the gas-liquid mixed spray method, the spray pressure is provided by compressed a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B12/00
Inventor 唐恒博
Owner ZHEJIANG HUAZHANG TECH
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