Pulsation-free wet spraying machine

A pulsation-free wet spraying machine, comprising a frame, a pumping mechanism, a swing mechanism and a hydraulic system,

• wherein the pumping mechanism comprises a hopper, a material chamber, a concrete feeding mechanism, an auxiliary feeding mechanism, a distribution valve and a discharge port, the hopper is disposed above the material chamber, two concrete cylinders of the concrete feeding mechanism are in communication with the material chamber, and an auxiliary concrete cylinder of the auxiliary feeding mechanism is in communication with the distribution valve in the material chamber;
• the distribution valve is disposed inside the material chamber, a front end of the distribution valve is in communication with the discharge port, and a rear end of the distribution valve is in communication with the concrete cylinders and the auxiliary concrete cylinder in a swinging process;
• the swing mechanism comprises a swing hydraulic cylinder, a mandrel, a swing arm and a swing hydraulic cylinder base, the swing hydraulic cylinder base is mounted at an outer side of the material chamber, the swing hydraulic cylinders are symmetrically arranged at both sides of the swing hydraulic cylinder base, and the swing arm is hinged with the swing hydraulic cylinders;
• the swing arm is mounted through a spline in cooperation with the mandrel;
• the motor/hydraulic system comprises a hydraulic oil tank and a motor, and the pumping mechanism, the swing mechanism and the motor/hydraulic system are all disposed on the frame;
• in a swinging process of the distribution valve, the rear end of the distribution valve is always in communication with the auxiliary concrete cylinder, and the front end of the distribution valve is always in communication with the discharge port;
• the concrete cylinder of the concrete feeding mechanism sucks a material from the material chamber, the concrete feeding mechanism pushes the material in the concrete cylinder to the distribution valve through the concrete piston, so that the material reaches the discharge port through the distribution valve;
• when any of the concrete cylinders pumps the material, the auxiliary concrete piston in the auxiliary concrete cylinder retracts to enable the auxiliary concrete cylinder to suck the material from the distribution valve;
• when the distribution valve swings, the material in the auxiliary concrete cylinder is pushed to the distribution valve;
• when the auxiliary concrete piston in the auxiliary concrete cylinder pushes the material, baffle plates at both wings of the distribution valve friction plate block outlets of the concrete cylinders.