Foam tool

Abstract

The invention discloses a foam tool, which comprises a gun body, a liquid inlet valve, a liquid outlet valve, a liquid outlet channel and a switching device, wherein the switching device can open or close the liquid outlet valve; and the liquid outlet valve comprises a liquid outlet nozzle with an outlet, a valve plug and a reset spring. The foam tool is characterized in that: the valve plug is made of stainless steel, or stainless iron or copper; the head of the valve plug comprises a convex part, a concave part, threads or a concave hole, and also comprises a sealing piece which is made of plastic; at least part of the plastic sealing piece is connected with the convex part, the concave part, the threads or the concave hole into a whole structure; the plastic sealing piece connected with the valve plug into the whole structure is sealed with the liquid outlet nozzle so as to effectively prevent and avoid the leakage and / or curing of foam caulking agent in the foam tool; the danger of the leakage, burning or explosion of the foam caulking agent or gas is effectively prevented and avoided; the abrasion performance, airtightness and stability of the sealing piece are improved; the leakage of the foam caulking agent caused by abrasion, looseness, deformation, fracture, peeling off or corrosion from the foam filler or from cleaning agent of the sealing piece is avoided; the blockage of the channel or the outlet in the foam tool is effectively prevented and avoided; and the leakage of the foam filler or gas caused by the deformation or fracture of the liquid outlet nozzle is effectively prevented. The foam tool has a simple and reasonable structure, greatly improves the foaming quantity and quality of foam caulking agent, saves energy, has safe and cleaning use, prolongs the service life, has low cost, and is suitable for mass production.

Description

technical field [0001] The present invention relates to a foaming tool for spraying foam caulk. Background technique [0002] About the anti-seepage installation, caulking or leak repair of doors, windows, walls, coatings, concrete, wood and plastic surfaces in buildings and houses, insulation of air-conditioning installations, leak-proof layers, installation of various pipes, vents And the hole filling of the wire outlet, the switch socket and the installation that require insulation, etc., generally use foam sealants as raw materials, for example: foam sealants can use gas and chemical materials with their own air pressure, such as using Butane gas and polyurethane, etc., expand after spraying to form a foam, and then naturally solidify. When in use, the foam sealant is released through the foaming tool to achieve installation, caulking, leak repair, heat preservation, insulation or bonding, etc. Purpose, the channel of the foam sealant in the foaming tool is generally in...

AI Technical Summary

Problems solved by technology

Due to the strong viscous force of the foam sealant, the continuous movement or twisting of the valve core during construction can easily pull (stick) the sealing ring in the liquid nozzle, causing the sealing ring to wear or loosen or deform or fall off In addition, during the construction, the valve core moves back and forth continuously, and the head of the valve core is easy to poke the inner side of the sealing ring, which is easy to cause damage to the sealing ring. Therefore, there is still leakage of foam sealant or gas or foam. The filler is solidified, shortening the service life of the foaming tool

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