Mechanical fluid auto-delay controller

The utility model relates to a mechanical fluid auto-delay controller, which comprises a housing and a main chamber arranged in the housing. An inlet and an outlet are communicated with the main chamber, the inner part of the housing is also provided with an auxiliary chamber which is communicated with the main chamber through small holes and the auxiliary chamber is provided with a restoring spring and connected push rods. Two sealing mating valve clacks which respectively correspond to the inlet and the outlet are also arranged in the main chamber, the lower end of the push rods penetrates through the main chamber and are linked and connected with the two valve clacks and the auxiliary chamber is also communicated and connected with a pressure relief valve to form a switching trigger mechanism. When time delay control is conducted, liquid gradually flows toward the auxiliary chamber through the main chamber, the restoring spring is compressed along with the pressure increase of the auxiliary chamber, the action of the push rods and the valve clacks is driven, the inlet and the outlet are shut and a time delay process is completed. When the pressure relief valve is opened, the balance of the pressure of the auxiliary chamber and the restoring force of the spring can be destroyed and the push rods and the valve clacks move quickly to open the inlet and the outlet. The utility model has the advantages that operation is portable, structure is reasonable, work is reliable and the utility model can be used for various fluid control systems.