Width-adjustable acid rolling device capable of eliminating residual acid

Abstract

The invention discloses a width-adjustable acid rolling device capable of eliminating residual acid. The acid rolling device comprises an upper roller and a lower roller. A raw electrode plate is reserved between the upper roller and the lower roller and penetrates through the space between the upper roller and the lower roller through rolling. The outer surface of the upper roller and the outer surface of the lower roller are each wrapped by 4-6 anti-acid roller fabrics. An acid leaching device is arranged on the upper side of the upper roller. The lower roller is composed of a cylindrical roller with axial antiskid protruding strips on the surface and a plurality of circular rings with grooves in the inner wall. The circular rings are combined into a rolling ring with the same width as the to-be-rolled raw electrode plate. The roller is sleeved with the rolling ring when the grooves are matched with the protruding strips. A plurality of concave grooves are formed in the protruding strips at intervals. The roller fabrics wrap the outer surface of the rolling ring. The residual roller fabrics at the two ends of the rolling ring are tightly bundled and tied in the concave grooves onthe protruding strips of the roller through fabric strips at the two ends. According to the width-adjustable acid rolling device, during rolling, a residual dilute sulphuric acid solution flows out of the two ends of the rolling ring without overflowing to the surface of the rolled raw electrode plate, the uniformity of the acid solution on the surface is ensured, the width of the lower roller can be adjusted, and the roller is used for multiple purposes.

Description

technical field [0001] The invention relates to the field of lead-acid battery production, more specifically, it relates to an acid rolling device with adjustable width for eliminating residual acid. Background technique [0002] In the process of smearing the green plates of lead-acid batteries, the acid rolling of the green plates is an indispensable link in the manufacturing process. The use of acid rolling can not only ensure the better combination of the grid and the lead paste, but also make the surface of the green plates smooth , It can also ensure that the surface of the lead paste does not produce cracks after the surface of the green plate is dried, the green plate does not stick when the plate is closed on the hanger, and the strength of the plate in the subsequent operation is maintained. Usually, the rich liquid acid-drenched rolling method is used. During rolling, acid is poured on the rolling roller. Through rolling and surface drying, a layer of lead sulfate...

AI Technical Summary

Problems solved by technology

The resulting uneven acid solution on the surface of the raw plate after rolling will cause a series of subsequent problems

(1) There is a lot of acid on the surface of the raw plate. When the surface is dry, the temperature of the kiln is high and the energy consumption is relatively high. However, the surface of the lead plaster where there is less acid will lose too much water, which will cause the surface of the lead plaster of the green plate to appear. Cracks, dry surface lead paste and internal lead paste are not firmly combined, resulting in too much floating powder on the surface, which has a serious impact on subsequent production and battery life; The pressure is uneven, the water loss rate is different in the subsequent curing and drying stage, and the strength of the lead paste in each part is also different. The falling strength of the lead paste in the place where there is more acid is poor; After curing and drying in many places, the lead sulfate layer on the surface is relatively thick, and it is difficult to transform the lead sulfate after the assembled battery is charged and formed, and it is easy to have too many white spots or too thick on the surface of the positive plate; The uneven thickness of the lead layer will lead to a large difference in the open circuit voltage after the formation of the internalized battery, which will affect the subsequent battery pack, reduce the pass rate of the pack, and increase the number of recharged batteries, resulting in increased charging costs and increased manufacturing costs.

[0005] 2. The width of the currently used acid-leaching rolling device cannot be adjusted, and the rollers need to be replaced frequently for raw plates of various lengths and sizes

Images