Improved structure of fiberboard production line modulated glue four-way valve

Abstract

The invention relates to an improved structure of a fiberboard production line modulated glue four-way valve, and the improved structure comprises a valve body (1), a valve core (2), and a through hole arranged on the valve body. The improved structure is characterized in that a movable valve block (3) is installed on the end, facing to the valve body (1), of the valve core (2); and the movable valve block is connected in a groove arranged at the end, facing to the valve body, of the valve core faced the valve body through a spring piece, or the movable valve block is a sheet which is installed on the end of the valve core. The improved structure provided by the invention has the advantages that the valve core is designed to be in a mobile structure so as to automatically control the sizeof a valve body gap; the valve core is tightly adhered to the valve body in normal operation, so that the gap between the valve body and the valve core is the smallest, the metering accuracy can be ensured, when solid particles clamp the valve core, the valve core performs automatic regulation so as to increase the gap, the particle can pass through the increased gap, the clamping stagnation is avoided, the work efficiency is improved, and the failure rate is reduced.

Description

technical field [0001] The invention relates to an improved structure of a glue-adjusting four-way valve for a fiberboard production line. Background technique [0002] In the current MDF production process, the glue is generally applied to the fiber discharge pipe by a glue pump through the glue mixing system. In order to accurately measure the glue consumption, two measuring cylinders are generally used for measurement, and the gap between the two measuring cylinders is The switching is through a four-way valve, and the switching of the four-way valve is realized by a valve core in the valve body rotating at a certain angle under the drive of the cylinder. figure 1 , figure 2 It is a schematic diagram of the principle of a four-way valve in the prior art, such as figure 1 As shown: the valve body 1 of the four-way valve has a rotatable valve core 2, and four through holes A, B, C, and D are provided in different directions of the valve body 1, wherein the through hole A...

AI Technical Summary

Problems solved by technology

[0003] Usually, in order to improve the accuracy of metering, the gap between the valve core and the valve body is relatively small, because the gap is fixed and cannot be adjusted, but due to the viscous characteristics of the glue itself, there are often certain attachments and solid particles Or other impurities, when the attachments in the glue, solid particles and other impurities are stuck in the gap, it often occurs that the valve core is inflexible or stuck during the switching process, which affects the uniformity of sizing, and sometimes even causes the production line to fail. Parking; and after long-term operation, the gap between the valve core and the valve body becomes larger, which affects the accuracy of glue measurement

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