SU120133A1 - Receiving-drain tank for straight flow dispenser - Google Patents

Description

The invention relates to the arrangement of a flush cistern to standard gas stations, instead of a drain piping.

Receiving and draining tanks for a continuous fuel dispenser equipped with a float that maintains a constant fuel level by shutting off the fuel feed channel, which is installed on the rod with a valve of the float, are known.

The essence of the invention is that, in order to prevent, during pump operation, air is drawn from the tank, when there is no fuel in it, the float rod is equipped with a second valve, disconnecting it, with the lowest position of the float, the tank cavity from the suction pipe of the pump.

The drawing shows schematically (thick lines) the described device connected to the gas station system.

The device is a chamber / (tank) with a float 2 mounted on it, on the stem of which two valves 3 and 4 are fixed. The drain pipe, together with the tee and the air pipe of a standard gas station (shown by dotted lines), are removed.

The upper part of the tank is connected to the air filter 5, and the lower to two pipes 5 and 7 are connected to the injecting pump of the column. The upper piping 6 is connected to the pump bypass valve with one side, right in the drawing, and the other side with the cavity between the two valves 3 and 4. The lower pipeline 7 connects the tank to the suction pipe of the column pump.

The operation of the device is as follows. When the system overflows, gasoline through the column bypass valve enters through the pipeline 6 into the cavity between valves 3 and 4, and from it into the tank. Popla # 120133-2 -

century in the tank pops up and the top valve 3 closes the access to gasoline in the tank. The lower valve 4 opens and gasoline circulates in a closed circuit. When stopping the supply of gas through the bypass valve, the float is lowered and closes the pinnacle 4, eliminating the possibility of air leaks through the air filter 5 into the suction system of the pasos.

The tank overflow is prevented by a float closing the top valve.

Subject invention

A receiving-drain tank for a continuous fuel dispenser equipped with a float that maintains a constant fuel level by shutting off the fuel supply channel, which is mounted on the valve with a float valve, characterized in that, in order to prevent the tank from leaking during the operation of the pump in it, the fuel, the float rod, is provided with a second valve, which, in the extreme lower position of the float, disconnects the cavity of the tank from the suction pipe of the pasas.