Cooling device for vacuumizing system

The cooling device comprises a plurality of cooling units which are evenly distributed in the front-back direction, each cooling unit comprises a box body with openings in the left side and the right side, each box body is provided with a water inlet distribution box and a water outlet collection box, the water inlet distribution box is located on the top face of the box body and connected with a water inlet pipe, and the water outlet collection box is connected with a water outlet pipe. The inlet water distribution tank is communicated with the inner cavity of the box body through a water distribution tank, and the outlet water collection tank is positioned on the bottom surface of the box body, is connected with a water outlet pipe and is communicated with the inner cavity of the box body through a drainage tank; a thermoelectric refrigeration plate is arranged in the box body and divides an inner cavity of the box body into a cooling cavity and a heat dissipation cavity, a first heat conduction plate is la