Spraying machine

Abstract

The invention relates to a spraying machine which comprises a machine body, a driving motor and a diaphragm pump are installed on the machine body, and the driving motor drives the diaphragm pump to move through a transmission mechanism; the diaphragm pump comprises a pump body and a pump chamber divided by a diaphragm piece in the pump body. The diaphragm piece is of a bowl-shaped structure with a sunken central part, the peripheral end part of the diaphragm piece is fixed with the pump body, and the central part of the diaphragm piece is connected with the transmission mechanism through a connecting rod; and the transmission mechanism drives the connecting rod to reciprocate up and down to deform the diaphragm, so that the pump chamber is radially expanded or compressed. The diaphragm piece is directly driven by the connecting rod to stir in a reciprocating mode to achieve material suction and material pressing, energy loss caused by pressure two-stage conversion and transmission brought by hydraulic indirect pushing in the prior art is avoided, therefore, the pressure is larger, and the spraying quality is guaranteed. Meanwhile, a pressure sensor is arranged in the machine body, the operation of the driving motor is controlled through collected pressure information, and stepless speed regulation and starting and stopping at any time of the driving motor are achieved; hydraulic oil is abandoned, and energy conservation and environmental protection are achieved.

Description

【Technical field】 [0001] The invention relates to the technical field of spraying, in particular to a spraying machine in the field of high-pressure spraying. 【Background technique】 [0002] Spraying machine is a special coating equipment using spraying technology, generally divided into air spraying and airless spraying. The principle of air spraying is to control the air flow to instantly push the air distribution reversing device to change direction, so that the piston of the air motor makes a stable and continuous reciprocating motion, pressurizes the inhaled paint, and then sends it to the spray gun, and releases the pressure through the nozzle to form atomization. A device that forms a dense coating on the surface of an object. [0003] Different from air spraying, airless spraying is a process that does not require compressed air to apply high pressure to the corresponding paint to atomize the paint when it is sprayed. At present, there are two types of spraying mac...

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