Garbage collection terminal pressure relief mechanism and garbage collection terminal device

The utility model relates to a garbage collection terminal pressure relief mechanism and a garbage collection terminal device, in the pressure relief process, an exhaust fan is started, so that airflow in a garbage pipe flows into a separator from a first pressure relief cavity to reduce negative pressure in the separator; after pressure reduction, the airflow flows back to the first pressure relief cavity from the separator; and then the gas flows into the second pressure relief cavity from the first pressure relief cavity. When the first filtering piece needs to be unblocked, the air inlet valve is opened, so that air is introduced into the cleaning pipe, and part of the air enters the second pressure relief cavity from the cleaning pipe and is reversely blown into the first pressure relief cavity from the second pressure relief cavity. At the moment, the impurities on the first filtering piece can be separated from the first filtering piece under the washing of the gas and flow into the separator along wit