Vacuum cleaning accessory supported by pulsating compressed air injection

Abstract

A vacuum cleaning accessory supported by a pulsating compressed air injection, characterized by an integrated suction hood (1) with a pressurized air duct (2) in its central area. The assembly is connected to an external suction system via a connection port (5).

Description

Vacuum cleaning accessory supported by pulsating compressed air injection TECHNICAL SECTOR The purpose of this utility model application is to register an accessory applicable to vacuum systems used for cleaning in the industrial field that combines the extraction of dirt by suction with the descaling of the same by means of air pulses. BACKGROUND OF THE INVENTION The utility model falls within the industrial sector of maintenance in public transport vehicle repair shops. These shops perform numerous maintenance operations associated with the vehicle's various systems. A necessary step before and after these operations is vehicle cleaning, which is carried out externally using car washes, blowers, or both. Particularly in railway workshops, these systems have the drawback of requiring large installations that occupy a workshop track, and they are not effective at cleaning some of the vehicle's more internal components located in hard-to-reach areas where general water or blower cleaning systems are inefficient.This is why, in many cases, blowing out hard-to-reach areas such as vehicle undercarriages, electrical boxes, ventilation ducts, etc., is used as a complementary method, employing hand-held water jets or compressed air. In particularly sensitive areas (from a mechanical or electrical standpoint), water jet cleaning is not possible, so only air jets can be used. To comply with environmental and hygiene requirements in a workshop, air jet cleaning can only be carried out in properly enclosed areas with internal extraction and with the operator wearing the necessary protective equipment to prevent inhalation of particles generated during the process. For this reason, and to allow cleaning operations in any workshop area, extraction can be used instead of blowing, since in this case all particles are directed towards a filter element, preventing contamination of the workshop atmosphere and avoiding particle inhalation by the operator. This is why some workshops already have centralized extraction systems, with outlets distributed throughout the workshop that direct the airflow through a hose connected to the outlet to a single unit that extracts and filters the air received from the various outlets across the workshop. The drawback of using suction as a cleaning method is that the dirt-lifting capacity of this technique is limited by the suction flow rate, and this in turn is limited by the depression capacity that the extractor is able to provide, which is physically limited to 1 bar of depression, although reaching half of that is already technically complex. EXPLANATION OF THE INVENTION The utility model consists of an accessory that is inserted into the end of the suction nozzle, allowing the advantage of cleaning with compressed air to be combined with the advantage of vacuum cleaning. This accessory allows the operator to launch pressure pulses onto the area to be cleaned to lift the dirt while the suction system collects this dirt and directs it towards the filtration system. The ability to combine suction and blowing is achieved because the air jet's speed is much greater than the speed of the suction air (flowing in the opposite direction). The jet is supplied with compressed air at pressures between 8 and 10 bar and delivered in pulses. BRIEF DESCRIPTION OF THE DRAWINGS To complement the description being made and in order to help a better understanding of the characteristics of the invention, a set of drawings is included as an integral part of said description, in which, for illustrative and non-limiting purposes, the following has been represented: Figure 1. General view of the accessory Figure 2. Front view of the accessory Figure 3. Elements of the set PREFERRED EMBODIMENT OF THE INVENTION The accessory covered by this utility model consists of an extraction hood (1) that captures particles projected as a result of the blowing process. This hood is made of lightweight materials, preferably aluminum or plastic, to allow for easy handling by the operator. The blowing action is achieved via a central compressed air duct (2), to which the blow nozzle (3) is connected. The blow nozzle (3) is not permanently attached to the central air duct (2). Depending on the operation and the required air jet range, it will be manufactured in different lengths, allowing it to be replaced as needed to project the air closer to the area to be cleaned. At the end of the blow nozzle (3) is the nozzle (4) that shapes the air jet and is also removable, allowing for the selection of a conical or flat jet. Additionally, the system connects to the workshop's compressed air circuit and is controlled by a solenoid valve (7) for opening the compressed air circuit and a solenoid valve (6) for generating pressure pulses. This allows for maximizing the efficiency of the jet cleaning with minimal air consumption. The system has an air trigger (8) that the operator controls to activate the system. The accessory connects to the workshop's extraction circuit via the connection port (5). This port is specifically designed to match the existing extraction ports in the workshop where it will be used.

Claims

1. A vacuum cleaning accessory supported by a pulsating compressed air injection, characterized by an integrated suction hood (1) with a pressurized air duct (2) in its central area. The assembly is connected to an external suction system via a connection port (5).

2. A vacuum cleaning accessory supported by a pulsating compressed air injection according to claim 1, which allows the connection of blow nozzles (3) of different lengths to modify the blowing requirements with the same tool.

3. A vacuum cleaning accessory supported by a pulsating compressed air injection according to claims 1 and 2, which has a pulsating pressure system formed by solenoid valves (6 and 7) to optimize jet cleaning and reduce compressed air consumption. 4.Vacuum cleaning accessory supported by pulsating injection of compressed air according to claim 1, 2 and 3 having a trigger (8) for manual operation of the blowing by the operator.