TWO-STAGE SCREENING DEVICE FOR LITHIUM BATTERY NEGATIVE ELECTRODE MATERIAL

摘要

Disclosed is a two-stage screening device for a lithium battery negative electrode material, the screening device comprising a base (1), a screening box (5), a first-stage screening device (6) and a second-stage screening device (11). The base (1) is formed by stop blocks (26), support columns (27), support blocks (28), upright columns (29), a bottom plate (30) and a fixing plate (31). A lower end cover (4) is arranged on the bottom of the screening box (5), an upper end cover (8) is arranged on an upper portion of the screening box (5), the second-stage screening device (11) is arranged inside the screening box (5) below the upper end cover (8), and the first-stage screening device (6) is arranged inside the screening box (5) below the second-stage screening device (11). The second-stage screening device (11) is formed by a support plate (18), a limiting sleeve (19), a spring (20), a through hole (21), a baffle plate (22), a protection plate (23), a second filter screen (24) and a vibrator (25). The limiting sleeve (19) is arranged on an upper portion of the support plate (18), the spring (20) is placed inside the limiting sleeve (19), the second filter screen (24) is placed on an upper portion of the spring (20), and the vibrator (25) is fixed on the screening box (5) outside the second filter screen (24). The first-stage screening device (6) is formed by a mounting frame (15), a first filter screen (16) and an ultrasonic generator (17). The device can carry out two-stage screening on materials, thereby improving the screening quality and efficiency.