RU191260U1 - DEVICE FOR CLEANING AGRICULTURAL EQUIPMENT - Google Patents

Abstract

The invention relates to devices designed for air-jet blasting of machines and mechanisms, and can be used to clean agricultural machinery from corrosion and contamination. The device includes a housing, a removable nozzle, a tip, an abrasive container placed in the housing and containing mesh openings, a channel for supplying an abrasive-air mixture, equipped with mesh and bypass holes of different diameters, providing dual-mode operation of the device, an adjusting screw, a feed channel spirit into the tank for the abrasive fluid communication with the channel for supplying the high pressure air, a handle provided with a high-pressure air supply channel and kurkom.V as an abrasive in the utility model is applied environmentally friendly reagent - sodium bicarbonate (NaHCO3). 2 s.p. f-ly, 3 ill.

Description

The claimed technical solution relates to devices designed for the mechanical cleaning of metal structures, namely, for jet pneumatic abrasive treatment of machines and mechanisms, and can be used in cleaning agricultural equipment from corrosion and pollution.

A known installation for abrasive gas treatment of surfaces of large metal structures [1], containing a source of compressed gas, connected by means of locking equipment with two tanks for abrasive material and with a gun, which consists of a housing with nozzles for supplying an abrasive gas mixture and compressed gas , cameras with a nozzle installed in it and a supersonic nozzle with an inlet tapering part, a critical section and an exit conical part. The disadvantage of this installation is its bulkiness, as well as the complexity of the design and low manufacturability of the manufacture of a supersonic nozzle of the gun.

A known design of the gun for abrasive-air surface treatment [2], consisting of a body with nozzles for supplying materials and a chamber in which a nozzle for supplying abrasive is installed; the inner surface of the outlet nozzle has a conical-cylindrical shape, and the nozzle for feeding the abrasive is made in the form of a nozzle mounted coaxially at the beginning of the conical part and the outlet nozzle with an annular gap relative to the critical section of the chamber, while the plane of its exit opening coincides with the critical section. The design of the gun does not allow for the necessary mixing of abrasive material in the conical-cylindrical part of the nozzle with the flow of compressed air, which reduces the quality of cleaning the treated surface.

The inventive utility model is compact and mobile. An environmentally friendly reagent sodium bicarbonate (NaHCO3) is used as an abrasive in a utility model. Particles of sodium bicarbonate sprayed with compressed air using the proposed device, due to the kinetic energy of the impact, provide a gentle cleaning of the mechanism from corrosion and contamination. In this case, the abrasive container is placed in the device body, and compressed air is supplied from an external source.

The utility model is illustrated by the graphic materials presented in FIG. 1, FIG. 2 and FIG. 3:

FIG. 1 is a longitudinal section of a device for cleaning agricultural machinery;

FIG. 2 is a partial section AA in FIG. one;

FIG. 3 is a partial section BB in FIG. one.

The inventive device (Fig. 1 - Fig. 3) includes: a housing 1, a nozzle 11, a tip 12, and the output of the housing 1 and the inner surface of the nozzle 11, coaxially mounted on the housing using a threaded connection, form a mixing chamber 2; capacity for abrasive 3 with mesh holes 4; a channel for supplying an abrasive-air mixture 6 with mesh holes 5, also having bypass holes 7 of different diameters; adjusting screw 8; channel 9 for supplying high pressure air with a fitting 10 for connecting an external source of compressed air; a channel for supplying air to the container for abrasive 13; trigger 14.

The device operates as follows. Before starting operation, the nozzle 11 is removed and through the outlet of the housing 1 into the tank 3 abrasive is poured - sodium bicarbonate. Then, by means of a threaded connection, the nozzle 11 is attached to the housing 1 (the volume of the mixing chamber is regulated by the longitudinal displacement of the nozzle when it is screwed onto the housing). The adjustment screw 8 is rotated until the mesh holes 4 on the abrasive container 3 coincide with the mesh holes 5 in the channel for supplying the abrasive-air mixture. From an external source, through the nozzle 10, air under pressure enters the channel 9. When you press the trigger 14, compressed air through the channel 9 through the bypass holes 7 enters the channel for supplying the abrasive-air mixture 6, and the change in air pressure in the channel for feeding the abrasive air mixture 6 is regulated depending on the diameter of the bypass holes 7.

Through the mesh openings 4 and 5, the abrasive from the container 3 enters the air stream directed through the channel 6 to the mixing chamber 2. From the chamber 2, the mixture of air and abrasive through the nozzle 11 comes out under pressure on the surface being cleaned. On the air supply channel to the abrasive container 13, part of the air flow from the channel 9 passes into the container 3, where it mixes the abrasive, preventing it from caking, and also creates pressure that allows the abrasive to enter the mixture supply channel 6.

The device operates in two modes, designed for cleaning heavily and slightly contaminated surfaces. The adjustment of the supply of abrasive and compressed air is as follows. In the channel 6 for supplying the abrasive-air mixture there are bypass holes 7, the diameter of which is 3 and 5 mm. In the case of processing a very dirty surface, to increase the supply of air-abrasive mixture, a bypass hole with a diameter of 5 mm in channel 6 is used.

Using the adjusting screw 8, the mesh openings 4 made in the abrasive container 3 and the mesh openings 5 in the channel 6, when combined, open completely, providing the maximum supply of abrasive to the channel for the air-abrasive mixture 6. When operating in the soft mode used for cleaning slightly contaminated surface, when turning the adjusting screw 8 in the channel 6, a bypass hole with a diameter of 3 mm is installed, which reduces the supply of compressed air, and the mesh holes 4 and 5 at the same time partially open, reducing the amount of abrasion and flowing from the vessel 3.

Information sources

1. RF patent for the invention No. 2302332 (application No. 2005130452, publ. 07/10/2007).

2. RF patent for the invention No. 2137593 (application No. 98109378, publ. 09/20/1999).

Claims (3)

1. A device for cleaning agricultural machinery, comprising a housing, a removable nozzle, a tip, a channel for supplying high pressure air, a channel for supplying an abrasive-air mixture, a container for abrasive, an adjusting screw and a trigger, characterized in that the container for abrasive is placed in the housing and contains mesh holes, and the channel for feeding the abrasive-air mixture is made with mesh and bypass holes of different diameters, providing a mixture in two modes. 2. The device according to p. 1, characterized in that the housing is made with a channel for supplying air to the abrasive container, communicating with the channel for supplying high pressure air. 3. The device according to p. 1 or 2, characterized in that the two bypass openings of the channel for supplying the abrasive-air mixture have a diameter of 3 mm and 5 mm, respectively.

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