SU1641450A1 - Airless liquid sprayer - Google Patents

Abstract

The invention relates to devices for applying the method of airless spraying of liquid materials and can be used when applying multicomponent paints and varnishes, adhesives, sealants. The purpose of the invention is to ensure the application of materials with a small life of 8 w Ґ LЈ j resistance while increasing the efficiency of the high pressure pump. For this purpose, the unit is equipped with a pneumohydraulic accumulator 6 located between the low pressure transfer pump 2 and the high pressure pump 1, having a charging unit with compressed gas in the form of a pipe 7 with a locking element, a pipe 8 with a non-return valve for receiving material from the supply tank 4 and the pipe 9 of supply material to high pressure pump 1. When emptying the supply tank 4, stopping the low pressure transfer pump 2, the operation of the high pressure pump 1 and, consequently, the operation of the spray gun 5 does not stop, but rather a long time, determined by the parameters of the pneumohydraulic accumulator 6. lasts 5 t O Ј SL O

Description

The invention relates to devices for applying the method of airless spraying of liquid materials, can be used when applying multicomponent paints and varnishes, adhesives, sealants.

The purpose of the invention is to ensure the application of materials with low viability while increasing the efficiency of the high pressure pump.

The drawing shows the installation diagram.

The installation consists of a high-pressure pump 1, a low-pressure transfer pump 2, a connecting pipe 3, a supply tank 4 of material, a spray gun 5. The installation is equipped with a pneumohydroaccumulator 6 having a pre-charge assembly with compressed gas in the form of a branch pipe 7 with a locking element, a pipe 8 with a non-return valve for receiving material from the supply tank and a pipe 9 for feeding material to the high-pressure pump 1. The pneumohydraulic accumulator TPP 6 is located between the low pressure pumping pump 2 and the high pressure pump 1.

Before the installation begins operation, compressed gas is fed through the valve 7 with the locking element to the pneumohydroaccumulator 6. The pneumohydroaccumulator is filled with material by a low pressure transfer pump 2 before the high pressure necessary for the operation of the pump 1 is created. The high-pressure pump 1 is started up and the process of applying the liquid material is started by airless spraying. During the operation of the high-pressure pump 1, the supply of material to the pneumo-accumulator 6 by the low-pressure pump 2 continues. When emptying the supply tank 4, stopping the low pressure transfer pump 2, the operation of the high pressure pump 1 and, consequently, the operation of the spray gun 5 does not stop, but rather a long time, determined by the parameters of the pneumohydroaccumulator, continues. allowing to perform the necessary operations to replace an empty tank or to set up a low pressure transfer pump 2.

The application of the proposed installation allows to ensure the continuity of its work when replacing the emptying consumable tanks, to ensure the application of liquid materials with low viability and to increase the efficiency of the high-pressure pump of the installation.

Claims (1)

Claims An airless spray installation system comprising a supply tank with a low pressure transfer pump communicated by pipeline to a high pressure pump and connected to a last spray gun, in order to ensure continuous operation of the unit when replacing supply tank, ensuring the application of materials with low viability while increasing the efficiency of the high pressure pump, the installation is equipped with th between the low pressure transfer pump and high pressure pump pnevmogidroakkumul torus having precharge node-discharge compressed gas in the form of a pipe with a stop element with non-return valve manifold for receiving material from the supply container and the feeding tube material to a high pressure pump.