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Gravure printing machine air circulation system

A technology of air circulation system and gravure printing machine, applied in the direction of printing machine, printing, general parts of printing machinery, etc., can solve the problems of high investment cost and affecting equipment operation cost, reduce solvent residue, avoid dry surface curing, Easy to control effects

Inactive Publication Date: 2017-06-30
广州黑马科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Regardless of whether thermal oxidation eliminates VOCs or catalytic oxidation eliminates VOCs, the investment cost of equipment is related to the air volume that needs to be processed. The greater the air volume, the higher the investment cost
In addition, whether thermal oxidation eliminates VOCs or catalytic oxidation eliminates VOCs, the concentration of VOCs in the exhaust gas affects the operating cost of the equipment

Method used

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  • Gravure printing machine air circulation system
  • Gravure printing machine air circulation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0025] Embodiment 1: if figure 1 As shown, the air circulation system of the gravure printing machine includes several groups of printing color groups X n (n=1, 2, 3...), exhaust fan MB, and VOCs concentration detector. This embodiment adopts 8 groups of printing color groups;

[0026] Each printing color group includes the return air regulating valve An (n=1, 2, 3...), the color group air supply fan Cn (n=1, 2, 3... ...), fresh air make-up valve Dn (n=1, 2, 3...), exhaust air regulating valve En (n=1, 2, 3.... ..), and printing drying tunnel Bn (n=1, 2, 3...), air heating heat exchanger Hn (n=1, 2,...);

[0027] Taking the X1 printing color group as an example, it includes the return air regulating valve A1, the color group air supply fan C1, the fresh air supplementary valve D1, the exhaust air regulating valve E1, the printing drying tunnel B1, and the air heating heat exchanger H1.

[0028] Each printing color group is connected in parallel, and the exhaust port of each...

Embodiment approach 2

[0030] Embodiment 2: as figure 2 As shown, the air circulation system of the gravure printing machine includes several groups of printing color groups X n (n=1, 2, 3...), exhaust fan MB, and VOCs concentration detector. This embodiment is still the same Using 8 groups of printing color groups;

[0031] Each printing color group includes the return air regulating valve An (n=1, 2, 3...), the color group air supply fan Cn (n=1, 2, 3... ...), fresh air make-up valve Dn (n=1, 2, 3...), exhaust air regulating valve En (n=1, 2, 3.... ..), and printing drying tunnel Bn (n=1, 2, 3...), air heating heat exchanger Hn (n=1, 2,...);

[0032] Taking the X1 printing color group as an example, it includes the return air regulating valve A1, the color group air supply fan C1, the fresh air supplementary valve D1, the exhaust air regulating valve E1, the printing drying tunnel B1, and the air heating heat exchanger H1.

[0033] Each printing color group is connected in parallel, and the ex...

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Abstract

The invention relates to a gravure printing machine air circulation system. The gravure printing machine air circulation system comprises a plurality of printing color cells, an exhaust fan and a VOCs concentration detector, wherein the printing color cells are connected in parallel; an air outlet of each printing color cell is connected with a main exhaust pipe; the tail end of the main exhaust pipe is divided into two branches, one branch communicates with all the printing color cells to circulate return air, and the other branch communicates with the exhaust fan and the VOCs concentration detector to be emptied. The operating air flow rate of the exhaust fan is controlled by the VOCs concentration detector. Each printing color cell comprises a return air regulating valve, a color cell air feeder, a fresh air supplement valve, an exhaust air regulating valve, a printing drying channel and an air heating heat exchanger. By adopting the gravure printing machine air circulation system, the concentration of VOCs in exhaust gas of a gravure printing machine is efficiently increased, so that surface curing, caused by too fast drying of printing oil on the surface of a printed body, of the surface of the printed body is avoided. Accordingly, solvents in the printing oil on the printed body can be volatilized smoothly, and the exhaust air flow rate of the gravure printing machine is reduced as well.

Description

technical field [0001] The invention relates to energy saving and emission reduction, in particular to an air circulation system of a gravure printing machine, how to efficiently increase the concentration of VOCs in the exhaust gas discharged by the gravure printing machine, to prevent the ink on the surface of the printed body from drying too quickly and the surface to solidify, so that the solvent in the ink on the printed body can be volatilized smoothly . Background technique [0002] At present, gravure printing is to coat the ink on the printed body and then dry it. So far, solvent-based ink is generally used, that is, the ink containing VOCs. The ink containing VOCs will generate a large amount of gas containing VOCs during the drying process. Since VOCs are the precursors that produce atmospheric haze, after VOCs are discharged into the atmosphere, they will chemically react with NOx in the air to generate PM2.5 and ozone that is harmful to the human body. China has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F23/04
CPCB41F23/04
Inventor 马军
Owner 广州黑马科技有限公司
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