Portable spray device

A portable spraying device for discharging a fluid, the portable spraying device comprising:

• a container for holding the fluid,
• a pump, which is in fluid connection with the container, for pumping the fluid out of the container,
• a spray gun, which comprises a spray opening and an electrically controllable application valve for opening and closing a passage to the spray opening,
• an application line, which establishes a fluid connection between the pump and the spray gun,
• a pressure sensor, which is arranged in the application line, for detecting the fluid pressure in the application line,
• an electric control device, which is coupled to the application valve and the pressure sensor in terms of data transmission, wherein the electric device is adapted to deliver an electric control signal for opening the application valve for a certain predetermined time interval and for closing the application valve on expiry of the time interval in accordance with the fluid pressure detected by means of the pressure sensor, with the result that a defined volume of the fluid is discharged via the spray opening, and
• an electrically controllable valve, which is arranged between the container and the pump, and which is coupled to the control device in terms of data transmission, wherein ambient air is drawn in by the pump in a first position of the valve, such that ambient air passes through the valve;
• and fluid is drawn in from the container in a second position of the valve, such that fluid passes through the valve;
• wherein the application valve is a shutoff valve with a shutoff body for closing a valve passage and the application valve has a valve spring which exerts a force on the shutoff body in the direction of a valve seat in order to close the valve passage or which exerts a force on the shutoff body in the direction away from the valve seat in order to open the valve passage,
• wherein the application valve has a valve chamber which is in fluid connection with the application line, and
• wherein the shutoff body is arranged relative to the valve chamber and the valve seat in such a way that a fluid pressure on the part of a fluid in the valve chamber presses the shutoff body onto the valve seat.