Combined waste gas purification all-in-one machine

An opening is formed in the lower end of one side of a machine box, a water tank is inserted into the opening, a plurality of gas uniformizing plates are fixedly installed in the water tank, an air collecting box is jointly installed at the upper ends of the gas uniformizing plates, a push plate is fixedly installed at the lower end of the outer side of the water tank, and a piston shaft of a telescopic air cylinder is fixedly connected with the push plate; the upper end of the catalysis unit penetrates through the upper surface of the machine box, the lower end of the catalysis unit is communicated with one end of the mixing pipe, the other end of the mixing pipe is communicated with the air collecting box through a magnetic suction connector, and a vibration motor is fixedly installed on one side of the mixing pipe. The water tank adopts a combined structure and is convenient to mount and dismount; a plurality of gas uniformizing plates are fixedly mounted in the water tank, waste gas is in uniform contact