JPS633999Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a refueling device.

(Prior Art) Conventionally, there has been a system in which a single oil supply device can supply oil at different flow rates depending on the need.

In this type of oil supply device, an opening degree switching valve is installed in the middle of the discharge piping that connects the oil supply nozzle and the pump device that discharges the oil sucked from inside the tank, and the opening degree switching valve can be switched by manual operation. This makes it possible to change from a large flow rate of oil supply to a small flow rate of oil supply, or from a small flow rate of oil supply to a large flow rate of oil supply.

(Problem to be solved by the invention) However, in the case of conventional lubrication systems, when changing from small flow rate lubrication to large flow rate lubrication, or from large flow rate lubrication to small flow rate lubrication, However, it was necessary to manually operate the opening degree switching valve each time, which was troublesome.

Additionally, it is possible to forget to change to a small-flow refueling mode and mistakenly refuel a small-capacity tank while using a high-flow refueling state, causing oil such as gasoline to overflow to the outside. There was a problem.

The present invention aims to solve the above-mentioned problems in a conventional oil supply device that can supply oil at different flow rates.

(Means for Solving the Problems) As a means for solving the above problems and achieving the purpose, there is provided a refueling nozzle, a nozzle detection unit that detects whether the refueling nozzle is stored or pulled out from a standby position, and It is connected to the nozzle via a refueling hose and discharge piping, and when the refueling nozzle detection section detects the drawn-out state of the refueling nozzle, the motor is driven to discharge the oil sucked from inside the tank to the refueling nozzle. When the pump device and the nozzle detection unit detect the drawn-out state of the refueling nozzle, the flow rate control means is switched from a small flow rate to a large flow rate by operating a manual operation unit, and the refueling nozzle is retracted. and a large flow rate setting section that cancels the switching setting of the flow rate control means to the large flow rate when the flow rate control means is detected.

(Function) With this configuration, when the refueling nozzle is pulled out from the standby position, the nozzle detection section detects this and the pump device is activated, so by operating the refueling nozzle in this state, refueling can be performed at a small flow rate. I can do it.

Next, if you operate the manual operation unit while the nozzle detection unit is detecting the refueling nozzle withdrawal state,
The large flow rate setting section puts the flow rate control means in a large flow rate switching setting state, and the flow rate control means thereby switches the flow rate sent to the refueling nozzle from a small flow rate to a large flow rate. Therefore, if the refueling nozzle is operated in this state, the refueling nozzle can supply refueling at a large flow rate.

Further, when the refueling operation is completed and the refueling nozzle is stored in the standby position, the nozzle detection section detects this and the pump device is stopped from operating. In addition, if the large flow setting part is set to a large flow rate with respect to the flow rate control means and refueling work is performed at a large flow rate, the large flow setting part will adjust the flow rate in conjunction with the detection by the nozzle detection part. Release the high flow setting for the control means. As a result, when the refueling nozzle is pulled out from the standby position again and refueling work is started next time, refueling at a small flow rate can be automatically performed.

(Example) Examples of the present invention will be described below.

FIG. 1 shows an example in which the present invention is applied to a ground-mounted refueling system, in which a discharge device 2 is housed within a main body 1 of the refueling system. Here, the discharge device 2
However, the pump 3 and the motor 5 that drives the pump 3
a pump device consisting of a pump 4 and the pump 4;
and a pump device consisting of a motor 6 that drives the pump. The discharge ports of both pumps 3 and 4 are connected to the branch ends of a discharge pipe 7 which is branched on one side, and gasoline etc. in an underground tank (not shown) is guided to the suction ports of both pumps 3 and 4. A suction tube 8 is connected. Here, the discharge device 2 can be used in two cases: when driving only one pump 3 to send a small flow of liquid to the refueling nozzle, and when driving both pumps 3 and 4 to send a large flow of liquid. A pump device including a pump 4 and a motor 6 constitutes a flow rate control means that switches the flow rate sent to the refueling nozzle to either a small flow rate or a large flow rate.

As shown in FIG. 2, the main body 1 includes a switch 9 for operating the motor 5 of the discharge device 2;
A switch 10 for operating the motor 6 is provided. A refueling nozzle 12 is communicated with the other side of the discharge pipe 7 of the discharge device 2 via a hose 11, and a nozzle hook 13 for housing the refueling nozzle 12 is provided on the outer wall of the main body 1.
A nozzle detection member is provided near the nozzle hook 13 to detect whether the refueling nozzle 12 is attached to or removed from the nozzle hook 13, that is, when it is stored or pulled out. Here, the nozzle detection member is composed of a shaft 15 that can move forward and backward, and a spring 16 that biases the shaft 15 toward the discharge side. There is.

Reference numeral 20 denotes an operation button, which is provided so as to be able to abut against the shaft 15 of the nozzle detection section 14 via a cable 19, and is connected to the shaft 1 for turning the switch 10 on and off.
8 is connected. And this operation button 20,
The cable 19 and the shaft 18 together with the switch 10 constitute a large flow rate setting section 17.

The shaft 15 of the nozzle detection section 14 is connected to the refueling nozzle 12.
When the switch is pulled out from the nozzle hook 13, the spring 16 moves to project further, turning on the switch 9 and separating it from the shaft 18. As a result, the nozzle detection section 1
4 is a detection state in which the refueling nozzle 12 is pulled out. Therefore, after that, the operation button 20 of the large flow rate setting section 17 is pressed.
When the shaft 18 is pulled through the cable 19, the switch 10 is turned on, that is, the large flow rate setting section 17 is set to switch from a small flow rate to a large flow rate.

On the other hand, when the refueling nozzle 12 is stored in the nozzle hook 13, the shaft 15 of the nozzle detection section 14 is pushed by the refueling nozzle 12 to turn off the switch 9, and the nozzle detection section 14 detects the storage state of the refueling nozzle 12. Detect. At this time, the shaft 18 of the large flow rate setting section 17 is pushed by the shaft 15 to turn off the switch 10, and the large flow rate setting state of the large flow rate setting section 17 is canceled and the setting state is changed to the small flow rate setting state. It will be reset.

Therefore, when refueling at a small flow rate using the refueling device configured as described above, it is sufficient to remove the refueling nozzle 12 from the nozzle hook 13. At this time, only the shaft 15 moves to project, the switch 9 is turned on, and only the motor 5 is driven. Therefore, by operating the lever 12A of the oil supply nozzle 12, small flow rate oil supply using only the pump 3 can be realized. After refueling, store the refueling nozzle 12 in the nozzle hook 13 and switch 9.
is turned off, and the motor 5 is stopped. On the other hand, when refueling at a large flow rate, the operation button 20 is operated after the refueling nozzle 12 is removed from the nozzle hook 13. As a result, both switches 9 and 10 are turned on, and the large flow rate setting section 17 enters the large flow rate setting state, and the motor 6 of the flow rate control means is driven together with the motor 5, and the pump 3 and the pump 4 of the flow rate control means are driven. Large flow rate lubrication is achieved. After refueling, when the refueling nozzle 12 is housed in the nozzle hook 13, the switches 9 and 10 are turned off, both motors 5 and 6 are stopped, and the large flow rate setting section 17 cancels the high flow rate setting state. Therefore, the amount of liquid in the discharge device thereafter will be switched to a state in which small flow rate lubrication is performed.

3 and 4 show an embodiment of the present invention, in which the normally open contact 9A of the switch 9 is connected midway through the drive circuit of the motor 5. On the other hand, the normally open contact 9B of the switch 9 is connected in the middle of the self-holding circuit of the relay 21, and the normally open contact 10A of the switch 10, which is opened by operating the operation button 20, is connected in the middle of the drive circuit of the relay 21. Normally open contacts 21A and 21B are connected to the drive circuit and self-holding circuit of the motor 6 to form a large flow rate setting section 17.
is configured.

Therefore, in this example device, the refueling nozzle 12
When removed from the nozzle hook 13, the nozzle detection section 14
The shaft 15 of the switch 9 is moved to operate the switch 9, and the motor 5 is driven. At this time, contact 9 of switch 9
Since B is turned on, the relay 21 becomes operable. Next, press the operation button 20 of the large flow rate setting section 17.
When is pressed, the contact 10A of the switch 10 is turned on, the relay 21 is activated, and the motor 6 is driven. After that, attach the refueling nozzle 12 to the nozzle hook 13.
When the switch 9 is stored in the switch 9, the switch 9 is turned off, and its contacts 9A and 9B are also turned off, so that the relay 21 is turned off. Therefore, both motors 5 and 6 stop. Therefore, in this embodiment as well, when the refueling nozzle 12 is housed in the nozzle hook 13 after refueling at a large flow rate, the discharge device 2 is automatically switched to a state in which the liquid is delivered at a small flow rate.

Although the above two embodiments have been described, the present invention is not limited to the above embodiments, and includes, for example, the following modifications.

The motor and pump of the discharge device are set as one each, and an existing electromagnetic flow rate switching valve that can switch the valve opening to either small or large is installed in the middle of the pump's discharge piping as a flow rate control means, and a large flow rate set is achieved. The valve opening degree of the electromagnetic flow rate switching valve is changed from small to large according to the large flow setting of the large flow setting part, so that the amount of liquid sent from the discharge device to the refueling nozzle becomes a large flow, and the large flow setting of the large flow setting part Upon release, the valve opening degree of the electromagnetic flow rate switching valve may be returned from large to small, so that the amount of liquid sent from the discharge device to the oil supply nozzle becomes a small flow rate.

In this case, an electromagnetic flow rate switching valve whose valve opening degree is switched between large and small depending on whether it is energized or de-energized is used.
It may be connected in place of the pump 6 in the circuit shown in FIG.

The motor and pump of the discharge device are each equipped with a well-known device such as a transformer (in the case of an AC motor) or a current limiting resistor (in the case of a DC motor) for switching the rotation speed of the motor between high and low speeds. A rotation speed switching device comprising a member is provided as a flow rate control means, and the rotation speed switching device is actuated in accordance with the large flow rate setting or release of the large flow rate setting section, so that the flow rate sent to the refueling nozzle can be changed to a large flow rate or a small flow rate. It may be possible to switch to the flow rate.

In this case, the rotation speed switching device may be replaced with the pump 6 in the circuit shown in FIG.

The oil supply device may be of a hanging type. In this case, the nozzle detection section may operate by detecting when the refueling nozzle is at a standby position at a predetermined height and when it is pulled out from the standby position. Further, the manual operation section can be provided by being suspended from a high place at the gas station along the fuel hose.

(Effects of the invention) As explained in detail above, the present invention has the advantage that even when refueling is performed by setting the dispensing device to a state in which a large flow rate can be delivered by operating the manual operation part, after the refueling is completed, By storing the refueling nozzle in a predetermined nozzle hook or standby position, the dispensing device is automatically switched to a state where liquid can be delivered at a small flow rate, which simplifies the flow rate switching operation. At the same time, there is no possibility of accidentally supplying oil at a large flow rate, and there is no possibility of overflowing the oil.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an example of the invention applied to a ground-based refueling system. FIG. 2 is an enlarged vertical sectional view of a main part of the oil supply device shown in FIG. 1. FIG. 3 is an enlarged vertical cross-sectional view of a main part of a fuel supply device showing another embodiment of the present invention. FIG. 4 is an electrical circuit diagram of the device shown in FIG. 3; 3...Pump, {4...Pump, 6...Motor}
Flow rate control means, 5...Motor, 12...Refueling nozzle, 14...Nozzle detection section, 17...Large flow rate setting section.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A refueling nozzle; a nozzle detection unit that detects whether the refueling nozzle is stored or pulled out from a standby position; When the nozzle detection unit detects the drawn-out state of the oil supply nozzle, a pump device that drives a motor to discharge the oil sucked from inside the tank to the oil supply nozzle; and a pump device that reduces the flow rate of liquid sent to the oil supply nozzle. a flow rate control means for switching between a flow rate and a large flow rate; and when the nozzle detection section detects a drawn-out state of the refueling nozzle, the flow rate control means is switched from a small flow rate to a large flow rate by operating a manual operation section. a large flow rate setting section that releases the switching setting of the flow rate control means to the large flow rate when it is detected that the refueling nozzle is retracted. (2) The flow rate control means is arranged in parallel with the pump device, and is arranged in parallel with the pump device, and is configured to drive a motor when the large flow rate setting section is set to switch to a large flow rate, and to stop the motor when the switching setting is released. The oil supply system according to claim 1, characterized in that the oil supply system comprises a pump system having branch connections. (3) In the flow rate control means, the valve opening degree is switched from small to large by setting the large flow rate setting section to a large flow rate, and the valve opening degree is switched from large to small by canceling the switching setting. Utility model registration claim 1, comprising an electromagnetic flow rate switching valve provided in the middle of the discharge pipe.
Lubricating device as described in section. (4) The flow rate control means switches the rotational speed of the motor of the pump device to a high speed by setting the large flow rate setting section to a high flow rate, and changes the rotational speed of the motor to a low speed by canceling the switching setting. The oil supply system according to claim 1, which is a registered utility model, and comprises a rotation speed switching device attached to the pump device.