JPS6112399Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a refueling device, and when the discharge pipe of the refueling nozzle is directed downward, the electric motor for driving the refueling pump is started, or the valve in the refueling piping is opened. The purpose of the present invention is to provide a lubrication device that has a configuration that enables lubrication, thereby saving labor and speeding up lubrication work, and further minimizing damage from oil leakage accidents caused by erroneous lubrication operations. do.

Generally speaking, as refueling systems for gas stations, there are two types: a ground-mounted type in which a refueling meter is installed on the ground, and a ceiling-suspended type in which a refueling hose is suspended from the ceiling of the gas station. Ground-mounted refueling equipment is
When starting refueling, the operator presses a button to start the electric motor that drives the refueling pump, or by removing the refueling nozzle from the nozzle hook on the side of the fuel metering machine, a switch installed on the nozzle hook is activated and the electric motor is automatically activated. is configured to be activated.

However, in the case of a refueling device that requires push-button operation, the operator must press the button each time to start and end refueling, resulting in poor refueling efficiency and difficulty in omitting refueling work. If a refueling device with a switch is installed by mistake and the refueling nozzle is opened after removing the refueling nozzle from the nozzle hook and before inserting the discharge pipe into the refueling port, the oil may leak outside. There is a risk of a large amount of leakage, and since the nozzle is connected and disconnected many times a day, the mechanical moving parts of the switch are severely damaged and the failure rate is high.

In addition, in the case of a ceiling-suspended refueling device, the refueling nozzle is normally driven when the hanging string hanging from the refueling nozzle in the refueling standby position is pulled downward as the refueling nozzle descends. but,
In this ceiling-suspended refueling device, the refueling nozzle is driven as soon as the refueling nozzle starts descending.
If the refueling nozzle is opened by mistake before the discharge pipe is inserted into the refueling port, a large amount of oil may leak out.

The present invention eliminates the above-mentioned drawbacks, and each embodiment thereof will be described below with reference to the drawings. 1st
The figure is a schematic configuration diagram of an example of a ceiling-suspended type oil supply device to which the oil supply device of the present invention is applied, and Figures 2 and 3 show an example of the oil supply nozzle portion in the state when not in use and when in use, respectively. FIG. 4 is a partially cutaway side view showing a circuit diagram of an embodiment of the motor starting control circuit.

In the figure, a refueling device 1 is provided with a delivery unit 3 that stores a refueling hose 2 on the ceiling of a refueling station, and when refueling, the refueling hose 2 is let out from the delivery unit 3, and a refueling nozzle is suspended from the lower end of the refueling hose 2. Operate 4 to refuel. The oil in the underground tank 5 is pumped up by the oil supply pump 6, supplied into the delivery unit 3 through the oil supply pipe 7, and further reaches the oil supply nozzle 4 via the oil supply hose 2. The fuel pump 6 is driven by an electric motor 8.

The refueling nozzle 4 has a discharge pipe 11 attached to the tip of a nozzle body 10 having a hollow handle 9, and a valve 12 in the nozzle body 10 can be opened and closed by operating a lever 9a. The valve 12 communicates with two liquid supply paths 13 and 14 that branch out from each other, and when applied to a ceiling-suspended oil supply device as in this embodiment, one of the liquid supply paths 13 communicates with a rotary joint 15.
It is connected to the refueling hose 2 suspended from the delivery unit 3 via. The other liquid supply path 14 is formed inside the handle 9, and is connected to a refueling hose when the refueling nozzle 4 is applied to a ground-mounted refueling device as described later.

In this embodiment, a switch 16 is provided inside the handle 9, and the opening of the liquid supply path 14 is closed by a plug 17 which also serves as a weight. switch 1
6 is a case 17 having a hollow part 17a along the axis of the handle 9. A magnet moving piece 18 is movably provided in the case 17, and the hollow part 17a is located near the base of the handle 9.
Reed switch detection switch 1 is located facing the
9.

As will be described later, the magnet 18 is provided to move and displace according to the attitude of the refueling nozzle 4, and can be moved within the hollow portion 17a depending on whether the discharge pipe 11 is directed upward or downward. do. Further, when the discharge pipe 11 is directed downward, the reed switch 19 detects the displacement of the magnet 18 and drives the oil supply pump 6 provided upstream of the oil supply nozzle 4.

This reed switch 19 is connected to an intrinsically safe power supply circuit 21 in a starting control circuit 20 of the electric motor 8 shown in FIG.
It is connected to the.

When not refueling, the refueling nozzle 4 is in the refueling standby position with the discharge pipe 11 facing upward due to the weight of the plug 17, as shown in FIG.
8 is located at the lower end of the hollow portion 17a. Therefore, the reed switch 19 is open and the electric motor 8 for driving the fuel pump is stopped.

When refueling, the refueling worker first lowers the refueling nozzle 4, which is in the refueling standby position, to a refueling position suitable for refueling, then holds the refueling nozzle 4 with the discharge pipe 11 facing upward, and then moves the refueling nozzle 4 to the vehicle. Move the refueling nozzle 4 close to the refueling port. After moving to a suitable location for refueling, the refueling operator tilts the refueling nozzle 4 and directs the discharge pipe 11 downward as shown in FIG. As a result, the magnet 18 moves to the opposite side of the hollow part 17a in the handle 9 and faces the reed switch 19. Therefore, the contact pieces in the reed switch 19 come into contact with each other due to the magnetic force of the magnet 18, and the switch 16 is closed. When the switch 16 is closed, the startup control circuit 21
The relay K inside is energized and excited, the contact k is closed, the electromagnetic switch 22 is closed, and the motor 8 is started.

In this way, the refueling pump 6 is configured to be driven when the refueling position is reached with the refueling nozzle 4 facing downward. Even if 9a is pulled, there is little harm caused by oil leakage.

When the desired amount of oil has been supplied, the nozzle lever 9a is released, the valve 12 is closed, and the discharge pipe 11 is pulled out from within the oil supply port. After pulling out the discharge pipe 11,
The refueling nozzle 4, whose discharge pipe 11 had been oriented downward, is returned to the posture when not in use, with the discharge pipe 11 oriented upward. As a result, magnet 1
8 falls within the hollow portion 17a and returns to its original position, and at the same time, the reed switch 19 is opened.

As a result, the relay K in the start control circuit 20 is deenergized and deenergized, and the electromagnetic switch 22 is opened to stop the electromagnetic machine 8.

In this way, the refueling device 1 configured as described above can start and start the electric motor 8 simply by changing the orientation of the refueling nozzle 4.
Stop can be easily controlled with switch 16
Since it is small and compact, it does not take up much space and can be constructed at an extremely low cost.

In the above embodiment, the refueling nozzle 4 in which the liquid supply path 13 opens at the upper part of the nozzle body 10 was taken as an example, but the refueling nozzle 24 shown in FIG.
The rotary joint 2 has an opening for a liquid supply path on the side of the nozzle body 25 and is bent in a direction perpendicular to the opening.
A configuration in which the refueling hose 2 is connected via the fuel hose 6 may also be used. Alternatively, a pistol-shaped refueling nozzle 27 shown in FIG. 6 may be used, in which a refueling hose is connected to a straight rotary joint 29 provided on the side of the nozzle body 28. In this case, the switch 30 is provided within the grip portion 28a.

Further, the refueling nozzle 4 described in the first embodiment can be applied not only to the ceiling-suspended type refueling apparatus but also to the ground-mounted refueling apparatus 31 shown in FIG. In that case, the liquid supply path 14 in the handle 9 of the oil supply nozzle 4 becomes a flow path for the oil liquid, and the oil supply hose 32 is connected to the opening of the liquid supply path 14 . Further, the opening of the other liquid supply path 13 is closed by a switch 33, but in this embodiment, as in the first embodiment, the switch 33 is composed of a magnet 34 and a reed switch 35. be.

Furthermore, in each of the above embodiments, the switch is not limited to one consisting of a magnet and a reed switch, but may also be a mercury switch or a micro switch configured to operate by detecting the attitude of the refueling nozzle.

Furthermore, in each of the above embodiments, the configuration is such that refueling is possible when the electric motor for driving the refueling pump is started, but the present invention is not limited to this. It is also possible to open an on-off valve provided in the fuel tank to enable refueling.

As mentioned above, the refueling device according to the present invention includes a refueling nozzle that is held with the discharge pipe facing upward when not in use, and is inserted into the refueling port with the discharge pipe facing downward when in use, and a refueling nozzle that is inserted into the refueling port with the discharge pipe facing downward when in use. A movable piece is provided on the oil supply nozzle so as to be moved and displaced accordingly, and a displacement of the movable piece when the discharge pipe is directed downward is detected in order to supply oil to the oil supply nozzle. It consists of a detection switch that drives a pump or valve installed on the upstream side of the nozzle, so by turning the discharge pipe of the refueling nozzle upward or downward, the movable piece moves away from or close to the detection switch, and the detection switch is activated. is opened or closed, and the detection switch can detect the attitude of the refueling nozzle.
For example, by interlocking a switch and an electric motor for driving a refueling pump, the operator does not have to start and stop the motor each time when refueling starts or ends. The refueling operation is very easy because it is done automatically, and even if you accidentally open the refueling nozzle before inserting the discharge pipe into the refueling port, as long as the discharge pipe is in an upward position, the refueling operation will continue. The electric motor for driving the refueling pump is not started, which makes it possible to minimize damage caused by oil leakage in the event of a mistake in refueling operation. By having a structure in which these are linked, the refueling pump has the advantage that the actual start and stop of refueling can be automatically controlled by signals from the switch while the refueling pump is constantly driven.

[Brief explanation of the drawing]

Figure 1 is a schematic configuration diagram of an example of a ceiling-suspended oil supply system to which the oil supply system of the present invention is applied;
The figures are partially cutaway side views of the refueling nozzle when it is not in use and when it is in use, Figure 4 is a circuit diagram of one embodiment of the motor start control circuit, and Figures 5 and 6 are modifications of the refueling nozzle, respectively. A side view and a partially cutaway side view showing an example, FIG. 7 is a schematic configuration diagram of an example of a ground-mounted refueling device to which the refueling device of the present invention is applied, and FIG. 8 is a non-use of the refueling nozzle portion. FIG. 1, 31... Oil supply device, 4, 24, 27... Oil supply nozzle, 11... Discharge pipe, 16, 30, 3
3...Switch.

Claims (1)

[Scope of utility model registration request] A refueling nozzle that is held with the discharge pipe facing upward when not in use and is inserted into the refueling port with the discharge pipe facing downward when in use, and a refueling nozzle that is provided in the refueling nozzle so as to be moved and displaced according to the attitude of the refueling nozzle. In order to supply oil to the oil supply nozzle, the displacement of the moving piece when the discharge pipe is directed downward is detected, and a pump or a valve provided upstream of the oil supply nozzle is driven. A lubricating device consisting of a detection switch.