Foaming tool

Abstract

The invention provides a foaming tool, comprising a gun body, a liquid inlet valve, a liquid outlet valve, a liquid outlet passage and a switch device; the switch device can lead the liquid outlet valve to be opened or closed; the liquid outlet valve comprises a liquid outlet nozzle with an outlet, a valve core and a recovery spring; the foaming tool is characterized in that a head of the valve core is provided with a sealing part which is made of plastic and a structure that the head of the valve core is connected with the sealing part to form a whole; the plastic sealing part is sealed with the liquid outlet nozzle; at least part of the aperture of the outlet of the liquid outlet nozzle ranges from 0.8mm to 4.5mm; alternatively, the section dimension of the internal hole of the outlet of the liquid outlet nozzle with largest transverse length is 0.8-5mm; therefore, the leakage and / or solidification phenomena of foam filling agent in the foaming tool are / is effectively prevented and avoided; the risk of leakage or combustion or explosion of the foam filling agent or the gas is effectively prevented and avoided; the anti-wearability, sealing performance and the stability of the sealing part are improved; the external leakage of the foam filling agent which is caused by abrasion or loosening or deformation or abscission or corrosion of the foam filling agent or the corrosion of cleaning agent is effectively avoided; the leakage phenomena of foam filling agent or gas which is caused by the deformation or cracking of the liquid outlet nozzle is effectively prevented; the structure of the foaming tool is simple and reasonable, thus greatly improving the foaming quantity and the quality of the foam filling agent, saving the resource, having safe and clean application and low cost, prolonging the service life and being 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 back and forth 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. , so, there is still leakage of foam caulk or gas or foam filler is cured, shortening the service life of the foaming tool

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