Water-cooling water chilling unit with detachable maintenance plate heat exchanger

The water-cooling water chilling unit comprises a rack, a plate heat exchanger set, a compressor, a water pump, a water tank and a condenser, the plate heat exchanger set, the compressor, the water pump, the water tank and the condenser are arranged on the rack, the water-cooling water chilling unit further comprises four supporting mechanisms, and the four supporting mechanisms are used for supporting the plate heat exchanger set so that the plate heat exchanger set can be in a suspended state; the four trundle assemblies are arranged on the periphery of the plate heat exchanger set correspondingly. Each trundle assembly comprises an installation base, a clamping piece, a sliding piece and a universal wheel. A first clamping groove and a second clamping groove are sequentially formed in the mounting seat from top to bottom, the first clamping groove and the second clamping groove are communicated through a first through hole, and a second through hole is formed in the bottom surface of the mounting seat; the