Device for manufacturing water-soluble light diffusion coating in LED (light-emitting diode) tube

The utility model discloses a device for manufacturing a water-soluble light diffusion coating in an LED (light-emitting diode) tube. The device comprises a slurry storage pool, a mixer, a diaphragm pump, a primary ultrasonic defoaming bucket, a first electromagnetic valve, a secondary ultrasonic defoaming bucket, a second electromagnetic valve, a powder storage bucket, a third electromagnetic valve and a glass tube. A method for manufacturing the water-soluble light diffusion coating in the LED tube comprises the following steps: 1, defoaming the slurry in the primary ultrasonic defoaming bucket for the first time; 2, defoaming the slurry in the secondary ultrasonic defoaming bucket for the second time; 3, feeding the slurry into the powder storage bucket for later use, and pressing in the glass tube; 4, performing a dry shaping process on the glass tube; and 5, entering the slurry storage pool from the glass tube for recycling. The device has the beneficial effect that the primary ultrasonic defoaming bucke