SU115042A1 - Automatic dispensing crane - Google Patents

Description

Automatic dispensing cranes are known, intended for filling fuel into barrels, tanks, fuel tanks of machines, etc., with automatic cessation of fuel supply by filling them to a predetermined level.

Such valves have a diffuser and venturi-type nozzle, a disc valve with a spindle, an actuator controlled by a membrane, and an actuator.

However, due to the presence of an ejector in them, the range of operation of the crane is limited.

The described valve differs from the well-known cranes in that in order to clarify the filling ratio and expand the range of operation of the crane, reduce the loss of velocity head and the percentage of underflow, a conical diverting nozzle and a cartridge with a spring-loaded valve are used to divide the fuel flow into two directions.

The drawing shows a longitudinal section of an automatic dispensing valve.

The automatic dispensing valve device consists of a body / crane in which a shut-off valve 2 is placed, consisting of a lever 3, a stem 4, a cup with a gasket 5 and a release spring (5. Inside the cartridge 7 there is an annular through channel 8 separated by two ribs A nozzle 9 is provided, by means of which a vacuum is created that is necessary for the mechanism to be triggered.The cartridge has a channel 10 for supplying air to the nozzle from the atmosphere and for suctioning air from under the membrane 11.

The cartridge 7 on the thread is connected to the housing / tap. A nozzle 12 is connected to the bottom of the cartridge 7, with a suction tube 13 and a filter with a grid 14.

For automatic and independent manual closing of the shut-off valve when filling the fuel tank with fuel, release number 115042 is provided.

a mechanism 15 consisting of a cover 16, a rod 17, a spring 18 of the rod, an emphasis and a membrane // with a spring 19. The lever knob 3 has a slot with ledges. Installing the shut-off valve lever sequentially at each stage allows you to adjust the valve's throughput during the process of filling the fuel tanks and filling the containers.

The cap 20 is intended to prevent contamination of the inside.

To fill the fuel with a crane, the long end of the lever must be lifted up and mounted on the corresponding protrusion of the handle. The short end of the lever at this moment rests on the stem 17 of the release mechanism, and the shut-off valve is raised, i.e. open.

When the shut-off valve is open, fuel is directed through the cartridge and handpiece to the fuel tank or container. In the cartridge, the fuel flow can pass only through a conical diverging nozzle 9, if the pressure in front of valve 2 does not exceed 0.1 kg / cm-1, or through the nozzle and annular channel 8, if the pressure before valve-m is greater than 0.1 kg / cm , and the flow pressure on the valve valve overcomes the force of the spring 21.

Thanks to the spring 21 with the valve 22, the minimum required flow through the nozzles is ensured, at which the automatic crane operates.

During the filling process, a vacuum is created in the nozzle, which is extinguished by air coming from the atmosphere through the channel 10 of the nozzle air tube 9. At the moment of filling the fuel tank or container to the desired level, the following occurs.

The tip of the tip is in the fuel, so not air, but fuel is coming to the nozzle through the air tube. At the same time, air is sucked out from under the membrane along the channels running from the membrane, which, after bending, removes the support from engagement with the brush. The rod, lost in the support, is lowered with the shut-off valve down, ensuring complete shut-off of the fluid flow and stopping the filling.

In order to repeat the filling, it is necessary to remove the long end of the lever 13 from the step and lower it. In this case, the spring 18 of the release mechanism retracts the pin 17 to the highest position, and the diaphragm moves forward under the action of the spring 19 and engages the stop in engagement with the pin.

Further operations are performed in the above sequence.

With the help of a lever, it is possible not only to change the capacity of the crane, raise the long end of the lever to one or the other ledge, but also to stop filling the fuel manually, for which the lever is lowered and the shut-off valve is closed.

Subject invention

Claims (2)

1. An automatic dispensing valve, characterized in that, in order to expand the range of operation of the crane, the latter is provided with a conical diverting nozzle, ensuring the creation of the maximum vacuum (vacuum) necessary for the automatic closure of the shut-off valve at the established costs. 2. A crane according to claim 1, characterized in that, in order to reduce hydraulic losses, reduce the flow rate, a cartridge with a spring-loaded valve installed on it is used to divide the fuel flow into two directions, in which most of the fuel passes through the annular through channel and the smaller part is through a conical diverging nozzle.