Brick machine exhaust system and brick machine

The utility model discloses an exhaust system of a brick machine, which is used for exhausting air of a pressing die cavity and comprises an exhaust pipe, an air valve, a buffer device and a vacuumizing device, and the buffer device and the vacuumizing device are connected with the pressing die cavity through the exhaust pipe. The exhaust pipe comprises a first branch pipe, a second branch pipe and a third branch pipe which are connected through a tee joint, the first branch pipe is connected with the pressing die cavity, the second branch pipe is connected with the buffer device, and the third branch pipe is connected with the vacuumizing device; the air valves comprise the first air valve, the second air valve and the third air valve, the first air valve is arranged on the first branch pipe, the second air valve is arranged on the second branch pipe, and the third air valve is arranged on the third branch pipe. By means of the vacuum pumping device, the service life of the vacuum pumping device can be prolo