RU159754U1 - LOCALIZING NOZZLE - Google Patents

Abstract

1. The localizing nozzle containing a dome-shaped housing, an annular cavity inside the housing, formed by the space between the outer and inner walls of the housing, a fluid supply system, an air flow injection source, a fluid suction system including a discharge pipe and a vacuum source, characterized in that the annular cavity communicated with the source of air flow through the air supply pipe located on the outer surface of the housing. 2. The localizing nozzle according to claim 1, characterized in that the fluid supply system is a conical nozzle of a continuous coating connected to a fluid supply hose.

Description

The utility model relates to devices for cleaning surfaces and can be used as nozzles for installing water-jet surface treatment.

From the prior art, a cleaning head is known (patent No. RU 2153837 dated 02.14.1996) containing a means for agitating, coming into contact with a surface for agitating a cleaning fluid, means for supplying a cleaning fluid to the surface in the area where the agitating agent is located, an air channel, intended to be connected to a suction source and having at least one opening for collecting liquid by suction from the surface, means for moving the means for shaking Tel'nykh body of the cleaning head between operative and inoperative positions and the valve is actuated in accordance with the position of the means for stirring and allowing implementation of supplying cleaning fluid when the means for agitation in the working position and prevents flow of the cleaning liquid when the means for agitation in the inoperative position.

The disadvantage of the described device is:

- a high dependence of the efficiency of localization of droplets (restrictions on their spraying) on the height of the end gap between the cleaning head and the surface being cleaned.

As the closest prototype, consider a head for cleaning surfaces (patent No. RU 2527986 dated 03/14/2011) with a housing that has a washing chamber, which is open downwardly surrounded by a perimeter wall, in which at least one washing nozzle for applying liquid detergent to the surface to be washed, and with a jet pump for suction applied to the surface of the liquid detergent, the jet pump having a hydra personal communication with the washing chamber, the inlet channel of the pump, which is connected through the mixing chamber to the collecting channel, and upstream of the collecting channel, there is a feeding nozzle for forming a suction stream, characterized in that the longitudinal axis of the pump inlet channel is oriented radially to the axis of rotation of at least one spray bracket, and the pump inlet is adjacent to the perimeter wall of the washing chamber, and that the diameter of the catching channel is from 14 mm to 18 mm, and the distance between the feed nozzle and the catcher channel is at least 10 mm.

The disadvantage of the described device is:

- a high dependence of the efficiency of droplet localization (limitation of their spraying) on the height of the end gap between the head for washing the surface and the surface being cleaned.

These technical solutions do not allow for effective cleaning of surfaces from radioactive substances, when cleaning such surfaces, it is necessary to ensure maximum removal of the cleaning fluid from the surface to be cleaned and to prevent the ingress of liquid (spraying) beyond the nozzle.

The objective of the claimed utility model is to eliminate the above disadvantages.

The technical result of the claimed utility model is to prevent droplets of sprayed liquid from falling outside the contour of the localizing nozzle body due to air flow organized around the periphery between the tip of the localizing nozzle and the surface being cleaned, reducing the dependence of droplet localization efficiency (spraying restrictions) on the height of the end gap between the nozzle and the surface being cleaned surface, achieving the required localization efficiency when processing surfaces with greater curvature or with large bumps.

To achieve the technical result, a localizing nozzle is proposed, containing a dome-shaped housing, a fluid supply system mounted on the housing to supply fluid to the surface under the nozzle housing, a liquid suction system, and to prevent droplets of sprayed liquid from falling outside the nozzle body contour, an additional forced air flow, which is supplied through the annular cavity inside the nozzle body by a compressor or fan. This creates an air curtain between the end of the nozzle and the surface being cleaned, which prevents the penetration of droplets beyond the nozzle through the end gap.

The inventive utility model is illustrated by the following illustrations:

Figure 1 - General view of the nozzle localizing in the context, Figure 2 - General view of the nozzle localizing, where:

1 - housing;

2 - annular cavity;

3 - pipe air supply;

4 - conical nozzle continuous coating;

5 - outlet pipe;

6 - supporting wheels;

7 - brackets.

The localizing nozzle contains a dome-shaped housing 1, a fluid supply system, a fluid suction system, an annular cavity 2 inside the housing 1, through which an additional air flow is supplied by a compressor or fan (not shown in the figure). The annular cavity 2 is formed by the space between the outer and inner walls of the housing 1 of the localizing nozzle.

The air supply to the annular cavity 2 is carried out through the air supply pipe 3, located on the outer surface of the housing 1 of the localizing nozzle.

The fluid supply system, located in the upper part of the localizing nozzle body, is a conical nozzle of a continuous coating 4 connected to a fluid supply hose (not shown in the figure) by means of a quick connector. The cleaning fluid is pumped through the hose and sprayed onto the surface to be cleaned under the housing 1 with a conical nozzle of a continuous coating 4.

The liquid suction system includes a discharge pipe 5 and a vacuum source (not shown in the figure) —a compressor or fan. The spent liquid, after application to the surface to be cleaned, is removed from the surface to be cleaned by means of a suction flow through the outlet pipe 5, which is located on the outer surface of the housing 1 of the localizing nozzle.

Air is supplied to the annular cavity 2 and the liquid is removed from the surface to be cleaned by compressors or fans through flexible hoses that are connected to the air supply pipe 3 and the discharge pipe 5 of the liquid suction system using clamps or quick couplings.

The localizing nozzle is equipped with at least three support elements in the form of support wheels 6, which are mounted on brackets 7 mounted on the outer surface of the housing 1 of the localizing nozzle. The wheels 6 are designed to support the nozzle localizing on the surface to be cleaned and move along the surface to be cleaned.

All flows (water and air) are fed in tangential directions to form vortex flows. The cleaning fluid is supplied to the surface under pressure in the range from 0.05 to 0.2 MPa. The localizing nozzle can be made of stainless steel or polymer, depending on the conditions of use.

The localizing nozzle works as follows:

The cleaning liquid is pumped through the fluid supply hose to the conical nozzle of the continuous coating 4 and is sprayed last onto the surface to be cleaned under the housing 1 of the localizing nozzle. Air is pumped by a compressor or fan through the air supply pipe 3 into the annular cavity 2, thereby creating an additional air flow that provides an air curtain around the periphery between the tip of the nozzle of the localizing and cleaned surface. Simultaneously with the supply of the cleaning fluid to the surface to be cleaned, the already-used fluid is removed from the surface by means of an intake air stream, which is organized by an additional compressor or fan, through the outlet pipe 5 of the fluid suction system, which is connected to the outlet hose by means of a clamp or a quick connector.

The described design allows for the removal of cleaning fluid from the surface to be cleaned and to achieve greater localization efficiency of drops of cleaning fluid compared to existing analogues. The air flow organized on the periphery between the tip of the nozzle of the localizing and cleaned surface prevents the penetration of droplets of cleaning fluid outside the nozzle body, which ensures effective cleaning of surfaces with greater curvature or with large irregularities. The height of the end gap for a particular size of the localizing nozzle is determined by a combination of parameters: nozzle diameter, slit width of the annular gap, the performance of compressors or fans, and the flow rate and pressure of the cleaning fluid.

Claims (2)

1. The localizing nozzle containing a dome-shaped housing, an annular cavity inside the housing, formed by the space between the outer and inner walls of the housing, a fluid supply system, an air flow injection source, a fluid suction system including a discharge pipe and a vacuum source, characterized in that the annular cavity communicated with the source of the air flow through the air supply pipe located on the outer surface of the housing. 2. The localizing nozzle according to claim 1, characterized in that the fluid supply system is a conical nozzle of a continuous coating connected to a fluid supply hose.

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