Welded plate heat exchanger

The utility model provides a welding type plate heat exchanger, which relates to the technical field of heat exchangers, and comprises a machine body, one side of the machine body is provided with a compression screw rod, one side of the machine body is provided with a feed pipe, one side of the machine body is provided with a discharge pipe, and the bottom of the machine body is provided with an adjusting device. By arranging the adjusting device, a worker can drive a screw hole block to move up and down by rotating a first screw rod, so that the screw hole block drives a rectangular rod to move up and down in a hollow rod through a rectangular hole, and the rectangular rod drives a machine body to move up and down to adjust the placement height; and therefore, the machine body can drive the feeding pipe to move up and down to adjust the position of the feeding pipe, the situation that the feeding pipe and an external pipeline cannot be connected due to the fact that the feeding pipe and the external pipelin