High-pressure air-free atomization glue-applying method and device

Abstract

The invention provides a high-pressure air-free atomization glue-applying method. According to the method, a glue solution is sprayed from a glue-applying device to form fog glue solution streams, and compressed air is provided for carrying out secondary atomization on the glue solution streams sprayed out of the glue-applying device. The invention further provides a high-pressure air-free atomization glue-applying device which comprises a chamber member, a piston device and a resetting mechanism; the chamber member is provided with a longitudinally-through chamber, the front end and the rear end of the longitudinalyl-through chamber are closed, and the front end of the longitudinally-through chamber is provided with a glue solution passage and an air passage which are communicated with the outside; the glue solution passage is provided with a glue solution inlet, and an air inlet is formed in the sidewall of the chamber; the piston device comprises a piston rod, and a valve core is sleeved on the piston rod; and the resetting mechanism comprises two resetting springs, the two ends of one resetting spring are respectively abutted against the piston rod and the closed end of the rear end of the chamber, and the two ends of the other resetting spring are respectively abutted against the valve core and the closed end of the rear end at the upstream of the chamber. According to the high-pressure air-free atomization glue-applying method and the high-pressure air-free atomization glue-applying device, the outflow of the glue solution is automatically controlled, and the sprayed quantity of the glue solution can be accurately controlled; and meanwhile, the sprayed glue solution can be fully atomized, so that the gas pressure of the atomized glue solution is reduced, and the energy consumption is lowered.

Description

technical field [0001] The invention belongs to the technical field of industrial sizing, and provides a sizing method, especially a high-pressure airless atomization sizing method. The invention also provides a high-pressure airless atomization sizing device. Background technique [0002] Wood-based panels are made by mechanically processing wood or non-wood plant fibers into various shapes of fibers, scraps or veneers, and then applying adhesives such as phenolic resin glue, urea-formaldehyde resin glue, isocyanate glue, etc., and then combined and pressed. sheet. [0003] Sizing is to uniformly apply a certain amount of adhesive and required additives to the surface of the raw material in proportion. Depending on the sizing method, the coverage and uniformity of the adhesive on the surface of the raw material are also different, which directly affects the bonding strength of the wood-based panel. [0004] There are two main ways of sizing wood-based panels: liquid flow ...

AI Technical Summary

Problems solved by technology

In such a sizing method, the flow rate of the glue solution is not easy to be accurately controlled, and the size and uniformity of the sprayed glue solution particles are not easy to control.

In this way, the mixing amount and uniformity of the glue will be seriously affected, thereby affecting the quality and production cost of the wood-based panel.

At the same time, to mix the gas into the glue, it is necessary to provide compressed gas with a higher pressure, which increases the energy loss

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