Centralized fountain solution purifying system

Abstract

The invention discloses a centralized fountain solution purifying system. The centralized fountain solution purifying system comprises a first water tank, wherein the first water tank is connected with a water tank of a printing press; an outlet of the first water tank is connected with an inlet of a primary filtering device; an outlet of the primary filtering device is connected with an inlet of a second water tank; an outlet of the second water tank is connected with an outlet of a circulatory fountain solution purifying device, so that a circulatory loop is formed; an outlet of a deep circulatory purifying device is connected with an inlet of a third water tank; the third water tank is connected with an alcohol adding box and a fountain solution adding box; an outlet of the third water tank is connected with the water tank of the printing press; the third water tank is provided with an automatic adding system; and the automatic adding system comprises a fountain solution adding system and an alcohol adding system and is provided with a fountain solution matching device. The centralized fountain solution purifying system has the advantages that impurities in the solution are effectively filtered out, a dampening system can be in a clean state for a long time without changing water, sewage discharge is reduced, and requirements on environmental protection are met; and moreover, the centralized fountain solution purifying system has the advantages of simple structure, low cost and the like.

Description

technical field [0001] The invention relates to a fountain solution recovery and purification equipment, in particular to a fountain solution centralized purification system, which belongs to the field of printing equipment. Background technique [0002] Fountain solution is an indispensable chemical additive in the printing process of color printing machines. It forms a uniform water film on the blank part of the printing plate to resist the infiltration of ink on the graphic and text to the blank part and prevent dirty plates. Printing fountain solution is one of the supporting auxiliary materials in the printing process. Although the printing fountain solution has developed from the common acidic fountain solution containing phosphoric acid and chromic acid commonly used in the past to the alcohol fountain solution used today, through The composition change not only greatly reduces the amount of fountain solution used, but also greatly improves the printing quality and ou...

AI Technical Summary

Problems solved by technology

Many people are very concerned about the waste liquid treatment and reuse of offset printing dampening solution, and have spent a lot of manpower and material resources in research work, but the problem has not been solved well, and the expected effect cannot be achieved, let alone the goal of zero emission.

At the same time, the fountain solution is easily polluted during the printing process, and the contaminated fountain solution can be used directly, which seriously affects the printing effect

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