Gas dispenser with buffer

The utility model provides a gas dispenser with a buffer. The gas dispenser comprises a high-pressure gas aerating branch, a middle-pressure gas aerating branch and a low-pressure gas aerating branch. The gas dispenser is characterized in that corresponding output ends of the high-pressure gas aerating branch, the middle-pressure gas aerating branch and the low-pressure gas aerating branch are connected with a gas buffer; the output end of the gas buffer is sequentially connected with a flow meter and a gas gun; each of the high-pressure gas aerating branch, the middle-pressure gas aerating branch and the low-pressure gas aerating branch is formed by a valve, a filter, an electromagnetic control valve and a one-way valve connected orderly. After adopting the technical scheme, the gas buffer is added to the output end; the gas dispenser is simple in structure, does not include a movement component, and has hardly any fault rate; meanwhile, the problem of pressure impact is well solved; the gas dispenser with the buffer is bound to be good for improvement of the stability and the metering accuracy of the gas dispenser and prolonging of the service life of the overall machine.