JPS59160578A - Wall surface cleaning method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cleaning walls, etc. suitable for removing deposits from outdoor objects such as stone statues and bronze statues.

When the outer walls of buildings, structures, etc. are made of concrete, tiles, concrete blocks, natural stone, etc., mold, moss, dust, etc. are likely to accumulate on these outer walls. In addition, the walls may corrode over a long period of time due to air pollutants. When various substances adhere to the walls in this manner, there is a problem that not only the walls are damaged and the service life is significantly shortened, but also the aesthetic appearance is spoiled.

Conventionally, these walls have been washed with detergents or chemicals, or mechanically scraped off, but these methods have problems in that they are very inefficient and tend to damage the walls.

The present invention has been made in view of these circumstances,
A wall surface that can efficiently remove mold, moss, dust, and other deposits that adhere to external walls of buildings, structures, etc., and outdoor objects such as stone statues and bronze statues, without damaging the objects being cleaned. The purpose of this invention is to provide a cleaning method.

In order to achieve this object, the present invention applies a flow of fine particles of a cleaning liquid to the cleaning surface of an object to be cleaned at a predetermined pressure or higher to scatter and remove deposits.

That is, the pressurized cleaning liquid is injected back from the spray nozzle to form a fine particle stream, and this fine particle stream is sprayed onto the cleaning surface of the object to be cleaned at a rate of about 0.
A pressure of 5 kg/cm2 or more was applied to the cleaning surface to remove deposits from the cleaning surface. The present invention will be described in detail below based on the illustrated embodiments.

FIG. 1 is a perspective view of an embodiment of the apparatus used to carry out the present invention, FIGS. 2 and 2 are perspective views of essential parts of the device in use, and FIG. 3 is a pressure distribution diagram of the injected fine particle flow. Number 1 in Figure 1
0 is an electric motor, 12 is a compressor driven by this electric motor 10, and this compressor 12 compresses tap water led by a hose 16 from a water snake i=+i4 to 200 to 250 9
/cm2 and pumped. This pressurized water as pressurized cleaning liquid is led to a spray gun 20 by a hose 18, and is sprayed as a stream of fine particles through a spray nozzle 22 at the tip of this gun 20. 23 is a pressure gauge attached to the hose 18.

As shown in FIG. 2, this nozzle 22 effortlessly sprays water in the form of fine particles in the form of a vertical band-like range/concave circle extending in the vertical direction. In FIG. 2, 24 indicates an object to be cleaned, for example a wall.

The pressure distribution of this fine particle flow is as shown in FIG. 3, where c is the distance from the nozzle 22 to the surface of the wall 24, that is, the cleaning surface, 2a is the vertical length of the fine particle flow, and ib is the width.

Particularly effective for cleaning is the pressure on the cleaning surface of 0.5 kg7
cm2 or more, the nozzle 22 should be approximately 10 cm from the cleaning surface.
It is preferable to spray water at a distance.

In this way, 0. By applying a flow of fine particles to the cleaning surface at a pressure of 5k17/cm2100, mold, moss, dust, and other deposits attached to the surface of the object to be cleaned can be efficiently scattered and removed. Especially for fine particles, the nozzle 22
Since it is sprayed at high speed, it is highly effective in physically removing deposits. In addition, since the amount of water is very small, compared to the case where a large amount of low-pressure tap water is sprayed and scrubbed with a brush, a large amount of water is scattered nearby, and the fine particles are quickly atomized and evaporated. Therefore, even when cleaning the outer walls of high-rise buildings, there is very little water dripping into the surrounding area, making the work extremely efficient.Furthermore, the spray area is small, so even if the spray pressure becomes a little excessive, the pressure applied to the wall is relatively small. No, it won't damage the wall.

FIG. 4 is a partially sectional side view of another embodiment of the gun 20A used for carrying out the present invention. In this gun 20A, the nozzle 22 is located downstream of a valve 32 that is opened and closed by a lever 30.
An air passage 34 for introducing air from the outside was formed at A. According to this embodiment, the air sucked into the nozzle 22A from the passage 34 is mixed with the fine particle flow to form bubbles, and the bubbles, together with the water particles, violently hit the cleaning surface and are crushed.

At this time, the ultrasonic vibrations forcefully and forcefully remove the deposits, thereby further improving the cleaning ability.

FIG. 5 is a sectional view of a water flow pulsation device 40 used in another embodiment. This device 40 is attached, for example, to the connection portion of the small valve 18 of the gun 20, as shown by the phantom line in FIG. 1, and actively applies vibration to the pressurized water. That is, a plug body 46 having an inlet port 44 and a plug body 50 having an outlet port 48 are screwed onto both ends of the cylindrical body 42, and the plug body 46 has a valve seat 52 and a large valve seat 52 on the downstream side of the inlet port 44. A diameter portion 54 is provided in the main body 42, and a pipe/gas groove 56 is provided downstream of the large diameter portion 54.
are formed respectively. 58 is a valve body, and the inlet port 44
A small diameter piston 60 and a large diameter piston 62 which are slidably fitted into the large diameter portion 54 are integrally formed. This valve body 58 has large and small pistons 62.6'O
A coil spring 64 provides a return behavior so that the stepped portion comes into contact with the valve seat 52.

This device 40 operates as follows. When the inflow pressure of the inflow port 44 exceeds a certain level, the valve body 58 is gently pushed rightward from the state shown in FIG. 5(A). When the small-diameter piston 60 comes to the right side of the valve seat 52 ((B) in the same figure), the inflow pressure is applied to the small-diameter piston 60 and the stepped portion, and the area on which the inflow pressure acts suddenly increases, so the valve body is strongly pushed to the right. In the same figure (
As shown in C'l, the large diameter piston 62 opens the pinos groove 56, and at this time pressurized water flows into this pinos groove. It exits through the slot 56 to the outflow 048.

Then, since the same water pressure is applied to both sides of the valve body 58, the valve body 58 returns to the state shown in FIG.

By repeating the above operations, the pressurized water supplied to the gun 20 is pulsated, and a pulsating fine particle stream is ejected from the nozzle 22.

By applying strong pulsations to the fine particle flow in this way,
Cleaning power is significantly improved.

Although tap water was used as the cleaning liquid in the above embodiments, it goes without saying that an aqueous solution containing detergent may also be used.

Although the name of the present invention is a wall surface cleaning method, the present invention is a method for cleaning the interior and exterior walls of buildings and other structures, outdoor installations such as stone statues and bronze statues, and even indoor bathtubs. It also includes.

As described above, the present invention violently sprays a flow of fine particles of cleaning liquid of 0.5 kg/Crn2 or more onto the cleaning surface, so that deposits can be efficiently removed and cleaning work efficiency is significantly improved.

First, it does not use special chemicals or mechanically scrape, so it can clean surfaces with fine irregularities without damaging them.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the device, Fig. 2 is a perspective view of the main part showing its usage state, Fig. 3 is a pressure distribution diagram of fine particle flow,
FIG. 4 is a partially sectional side view of another embodiment of the gun, and FIG. 5 is a sectional view of the pulsation device. 12... Compressor, 22... Injection nozzle. Patent applicant Mitsuo Tsunoda's personal wingman Fumio Yamada (and one other person) Engraving of the drawings (no changes to the contents) Figure 1 Figure 2 Figure 3 a (mm) Figure 4 Figure 5 (B) Mu O - Continuation: 1. Yamamasa - Tsutomu Katama June 1988 271 Kogo Office Director Kazuo Wakasugi Display of the property 1988 Patent Application No. 034646 Name of person who corrects wall cleaning method Relationship with Honshu Patent application Address: 2846 Ishiimachi, Utsunomiya City, Tochigi Prefecture Name
Corner 1) Yurihito Mitsuru 105 Address Yamato Bank Toranomon Building, 1-6-21 Nishi-Shinbashi, Minato-ku, Tokyo Number of inventions increased by positive 0 Positive object

Claims (2)

[Claims] (1) The pressurized cleaning liquid is sprayed backwards through the spray nozzle to form a stream of fine particles, and this stream of fine particles is sprayed onto the cleaning surface of the object to be cleaned.
A method for cleaning a wall surface, etc., characterized by applying a pressure of kg/Crn2 or more to the cleaning surface to remove deposits from the cleaning surface. (2) The method for cleaning a wall surface, etc., according to claim 1, wherein the spray nozzle sprays the pressurized cleaning liquid within a vertical band-like range that is elongated in the vertical direction.