Dustproof spring brake chamber

The dustproof spring brake chamber comprises a first shell, a second shell and a piston, the upper end of the piston is fixedly connected with a push rod, the upper portion of the push rod is fixedly connected with a connecting fork, the side of the second shell is connected with an air pipe, one end of the air pipe is connected with an exhaust inlet in the second shell, and the other end of the air pipe is connected with a fan. The fan is arranged in the third shell, an air outlet is formed in an air pipe at the output end of the fan, and the air outlet is communicated with the interior of the second shell. Through a reset spring, a sleeve, a piston and a sealing ring, when air inlet is stopped, the reset spring can enable the piston to return to the original position again, dust in the second shell can be collected and cleaned through a fan, an air inlet, an air outlet and a filter pipe, and meanwhile, the air outlet can blow a spring brake air chamber to dissipate heat. 本发明公开了一种防尘式弹簧制动气室，包括第一壳体、第二壳体和活塞，所述活