Waste gas treatment method, system and dissolvant type spraying/drawing machine

Abstract

The present invention discloses a method for treating waste gas, including that the waste gas collected by a gas collection device is discharged through an air outlet of the gas collection device with the action of a negative-pressure generation device; and the waste gas discharged from the gas collection device is guided into a waste gas treatment device to purify. The embodiment of the invention also provides a corresponding waste gas treatment system and a dissolvent type spraying / drawing machine containing the waste gas treatment system, the waste gas treatment system is provided with a gas collection device with an air inlet and an air outlet in a waste gas volatilization region, the air outlet of the gas collection device is connected with the negative-pressure generation device through a pipeline I, the negative-pressure generation device is connected with the waste gas treatment device through a pipeline II. A region between the gas collection device and a medium is provided with a negative-pressure cavity, thereby the exhaust gas is not liable to diffuse outside, thus a majority of the waste gas may be absorbed to treat, and it is capable of protecting operating staff to be in good health, and reducing environment pollution. It is also capable of simplifying the structure of the spraying / drawing machine by using the gas collection device, and reducing the volume of the spraying / drawing machine, and reducing a manufacture cost.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment and the technical field of inkjet printers, in particular to a waste gas treatment method, a system and a solvent-based inkjet printer. Background technique [0002] The exhaust gas generated by the organic solvent in the ink during the processing of the inkjet printer will cause harm to the operator's body and cause environmental pollution, so it is necessary to purify the exhaust gas. [0003] At present, there are two main methods of waste gas treatment for solvent inkjet printers: [0004] One is to use a fan to blow the exhaust air directly into the surrounding space, refer to figure 1 , is a schematic diagram of a solvent inkjet printer exhaust gas treatment system in the prior art. The medium 101 is moved and dried along the medium pallet (or drying plate) 102, and one to two rows of fans 103 are installed outside the surface of the printed medium 101, and the solvent waste ga...

AI Technical Summary

Problems solved by technology

[0006] During the research and practice of the prior art, the inventors of the present invention have found that the above-mentioned method of exhausting through a closed cabinet with an exhaust fan or a vacuum pump can process and discharge most of the exhaust gas under the condition that the operating door is closed. However, when the observation operation door is opened, there will still be a large amount of exhaust gas emitted, which will cause harm to the human body and pollute the environment

At the same time, since the area where the printing medium is located (including the printing trolley and the guide rail beam area supporting the printing trolley) needs to be surrounded by the chassis, the space occupied by the inkjet printer is large, the volume of the inkjet printer is correspondingly large, and the structure is relatively complicated. So the manufacturing cost is higher

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