JPH0318400Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a lubricating device that performs metered lubricating via a discharge hose having a nozzle valve at its tip.

[Prior art and its problems]

Generally, in this type of refueling device, the pump is first driven by a switch or the like to start refueling, and then the refueling nozzle is brought to the refueling port of the container to be refueled and the nozzle valve is opened to perform refueling. .
Therefore, if you inadvertently start refueling with the nozzle valve open, oil will suddenly spray out from the nozzle, causing
There is a danger of it being spread all over the place. For this reason,
If there is an oil spill immediately after the start of the refueling operation, it may be possible to take measures to minimize the above-mentioned danger by urgently stopping the refueling operation. To take such measures, even if the nozzle valve is closed, the discharge hose expands due to the supply oil pressure and a certain amount of oil flows, so it is necessary to predict this amount of oil flow and wait within a certain monitoring period immediately after the start of the refueling operation. It is necessary to set the controlled outflow amount so that the refueling operation is stopped when the outflow exceeds the hose expansion by a certain amount.

By the way, in this type of device, the length of the hose varies depending on the conditions of use, and an extension hose is sometimes used. If the length of the hose changes in this way, the amount and time of outflow due to expansion of the hose will naturally differ, so the controlled outflow amount and monitoring time must be set assuming the longest case in which the discharge hose is extended. However, even if the discharge hose was short, there was an inconvenience that the system would not automatically stop unless a larger amount than necessary was discharged for a long period of time. In addition, if you limit the discharge hose to a predetermined length and set the controlled outflow amount and monitoring time, if you change the length of the discharge hose, the refueling operation may stop even though the nozzle valve is not open. There is a risk of incorrect operation.
I had a problem where I couldn't easily change the length.

[Means for solving problems]

This invention includes means for setting the length of the discharge hose, means for setting the controlled outflow amount according to the length given by the length setting means, and monitoring time according to the length given by the length setting means. and means for setting the oil supply operation to force-feed oil to the discharge hose side, and when an outflow exceeding the control outflow amount given by the outflow amount setting means is measured within the monitoring time given by the monitoring time setting means from the start of the oil supply operation to force-feed oil to the discharge hose side, the said oil supply operation is performed. The above problem is solved by providing a control means for stopping the operation.

〔Example〕

Hereinafter, a specific example thereof will be explained based on the drawings.

FIG. 1 is an external view showing an embodiment of the present invention in use, showing a mobile refueling device mounted on the loading platform of an automobile, and FIG. 2 is an explanatory diagram showing the configuration of this embodiment.

1 is an automobile, 2 is an oil tank placed on the loading platform 3 of the automobile 1, and 4 is a main body of a refueling device installed in parallel with the oil tank. The metered amount of oil is supplied to the container 7 to be supplied with oil through the supply nozzle 6. Lubrication device main body 4
The system includes a pump 8 that pumps oil from the tank 2, a drive circuit 13 for the pump 8, a meter 9 that measures the amount of oil supplied, and a flow rate transmitter 10 that outputs a flow rate signal at each constant flow rate based on the amount measured by the meter 9. , a control valve 11 that faces the oil supply path and adjusts the oil supply flow rate by adjusting its opening degree, a valve drive means 12 that includes a motor and the like and drives the control valve 11, and sends and receives signals to and from each of the above parts to control the oil supply operation. A control section 14 is provided.

The control unit 14 includes an operation board 15 that performs operations such as turning on and off the power and inputting the length of the discharge hose being used, a display 16 that displays the amount of refueling and its price, etc. and a control board 17 for providing control operations. This control board 17 has a microcomputer equipped with a CPU, ROM, RAM, etc., and operates according to a program registered in the ROM. In addition to a nozzle valve 20 that is opened and closed by a lever 19 provided in the refueling nozzle 6, there is also a pressure-responsive valve that is always energized in the closing direction, opens when the supply oil pressure is above a certain level, and closes when the supply oil pressure falls below a certain level. Equipped with a valve 21, it is automatically opened when the normal supply oil pressure is applied, and closed when the flow path is throttled by the control valve 11 and the flow pressure falls below a predetermined pressure. This prevents the oil in the hose 5 from flowing out, and at the same time prevents air from being introduced into the hose 5.

FIG. 3 is a block diagram showing the functional operation of the main parts of the control board 17, and the operation of the embodiment will be explained below based on this diagram.

Reference numeral 22 denotes oil supply amount detection means for integrating the flow rate signal from the flow rate transmitter 10. Reference numeral 23 denotes a length setting means provided on the operation board 15 for setting the length of the discharge hose being used. 24 is also the operation board 15
Refueling start input means provided for. 25 is a controlled outflow amount setting means for providing a controlled outflow amount Vc for emergency outflow stop based on the length data given by the length setting means 23; 26 is a monitoring time setting means for setting a time Tc for monitoring whether or not an emergency stop is necessary based on the length data given by the length setting means 23; Control means 27 performs operations such as stopping the pump 8 and closing the control valve 11 to stop the refueling operation in an emergency based on signals from the various parts mentioned above. Reference numeral 28 denotes a notification means for outputting an alarm in case of an emergency or a sign indicating that it is OK to start refueling based on a signal from the control means 27.

Therefore, when there is a refueling start input in the refueling start input means 24, the control means 27 drives the pump 8 via the pump drive circuit 13 and the valve drive means 12, and opens the control valve 11 to perform the refueling operation. The refueling amount detecting means 22 sets the accumulated value up to that point to 0 and starts counting the outflow amount V after the start input. Further, the controlled outflow amount setting means 25 and the monitoring time setting means 26 each set the controlled outflow amount Vc and the monitoring time Tc according to the length data of the discharge hose input and stored in advance from the length setting means 23. Outputs a signal to. Subsequently, the control means 27 monitors the outflow amount V given from the refueling amount detection means 22, and monitors the monitoring time from the start input.
It is detected whether there is an outflow within Tc that exceeds the controlled outflow amount Vc. In the event that there is an outflow exceeding the controlled outflow amount Vc, an alarm is output from the notification means 28 to notify that the nozzle valve 20 remains open, and the pump drive circuit 13 and valve drive means 12
The pump 8 is stopped and the control valve 11 is closed. On the other hand, if there is no outflow exceeding the control outflow amount Vc within the monitoring time Tc, the notification means 28 notifies the refueling opening OK by an audio output different from the alarm output, etc., and enters a refueling standby state waiting for the opening operation of the nozzle valve 20. becomes. FIG. 4 shows a flowchart of the above operation.

Note that the above monitoring time Tc is determined by changing the length of the discharge hose 5, because naturally the pipe resistance and the amount of outflow due to expansion of the hose will change, and the responsiveness of the outflow operation will also change. This is set because it takes some time to determine whether or not the nozzle valve 20 is open, and in this example, it is usually 1 to 3.
It is set in a range of about seconds.

As described above, according to this embodiment, the pressure-responsive valve 21 is provided in the nozzle part to prevent air from being introduced into the hose, and the air in the discharge hose is compressed even when the nozzle valve 20 is closed. This solves the problem of outflow exceeding the control outflow rate, and is also designed to detect whether the nozzle is left open within the minimum amount of time and amount of outflow depending on the length of the discharge hose.

[Effect of idea]

This invention is constructed as described above, and if the length of the discharge hose is set in advance in the length setting means, the controlled outflow amount and monitoring time can be set according to the length, and the discharge hose can be adjusted. Even if the refueling operation starts with the valve open, the refueling operation can be stopped quickly.
There is no inconvenience like in the past where you have to scatter more oil than necessary. In addition, even if the length of the discharge hose changes due to the use of an extension hose, etc., it can be used without any problems by simply setting the length, and even workers without specialized knowledge can easily change the length of the discharge hose. be able to.

[Brief explanation of drawings]

FIG. 1 is a usage diagram of an embodiment of the present invention. FIG. 2 is an explanatory diagram of the configuration of the embodiment. FIG. 3 is a block diagram showing the functional operation of the main parts of the embodiment. FIG. 4 is a flowchart showing the operation of the embodiment. Reference numeral 4 refers to the main body of the oil supply device, 5 refers to the discharge hose, 6 refers to the oil supply nozzle, 8 refers to the pump, 20 refers to the nozzle valve, 23 refers to length setting means, 25 refers to control outflow amount setting means, 26 refers to monitoring time setting means, and 27 refers to control. means.

Claims (1)

[Scope of utility model registration request] In a refueling device that performs metered refueling via a discharge hose having a nozzle valve at its tip, means for setting the length of the discharge hose, and means for setting a controlled outflow amount according to the length given by the length setting means. and a means for setting a monitoring time according to the length given by the length setting means, and a means for setting a monitoring time according to the length given by the length setting means, and a means for setting the outflow amount within the monitoring time given by the monitoring time setting means from the start of the oil supply operation to forcefully feed oil to the discharge hose side. and a control means for stopping the refueling operation when an outflow exceeding a control outflow amount given by the setting means is measured.