Foam dispenser having twice automatic cleaning function

Abstract

The present invention provides a foam dispenser having a twice automatic cleaning function that automatically discharges a compressed air toward a mixing chamber, when releasing a pulled trigger lever, thereby improving convenience of work and providing economic advantages. The foam dispenser having a twice automatic cleaning function includes a main body 4 including a hose connection unit 34 and an air hose connector 42, a coupling end part formed at the other end thereof, a pair of fluid passageways 20, an air passageway 22, and a handle 3; a dispensing nozzle 6 connected to the coupling end part of the main body 4, has a mixing chamber 64; a separate-fluid supply unit 8 provided inside the main body 4 to open or close the fluid passageways 20; and an automatic cleaner 10 provided at a middle portion of the air passageway 22 to automatically open the air passageway 22.

Description

BACKGROUND OF THE INVENTION1. Field of the Invention[0001]The present invention relates to a foam dispenser having a twice automatic cleaning function, and more particularly, to a foam dispenser having a twice automatic cleaning function that automatically discharges a compressed air toward a mixing chamber, when releasing a pulled trigger lever in order to stop an operation of the foam dispenser, such that it is possible to reliably prevent fluids from being hardened in the mixing chamber, and thereby improving convenience of work and providing economic advantages.2. Description of the Related Art[0002]As is well known, in a construction field, a heat insulation material is a material that performs partial heat insulation in a small area or gap, as well as entire heat insulation in a large-area. As a typical heat insulation material, there is a curable urethane foamed material.[0003]A manual gun-type dispenser for injecting and dispensing a curable urethane foamed material is known...

AI Technical Summary

Benefits of technology

The present invention is a foam dispenser that has a twice automatic cleaning function. This means that when the foam dispenser is not in use, it automatically cleans itself by releasing a compressed air towards the mixing chamber to prevent fluids from solidifying. This happens without the user having to actively think about it, so there is no delay in the work and it makes the foam dispenser more convenient and economically efficient.

Problems solved by technology

When the two fluid components, i.e. the resins are mixed, a mixture thereof is quickly hardened to form a rigid foamed product which is very difficult to remove from a surface with which the mixture is in contact, and is substantially insoluble.

However, since other works other than the foaming construction are generally carried out in the building insulation construction, two fluids may become mixed and hardened in the mixing chamber.

Thereby, there is a problem that the dispensing nozzle or a coupling part of the dispensing nozzle becomes clogged.

However, there are problems that the cleaning process is very cumbersome and results in extending an entire work time.

However, when taking a break during the dispensing work or when getting a phone call, it may be unconsciously forgotten to perform the work for cleaning immediately.

At this time, when the dispensed fluid becomes solidified and the dispensing nozzle is clogged, there is a problem of requiring the cleaning work for a considerably long period of time.

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