JPH0455958B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a quantitative liquid supply device that automatically supplies gasoline, kerosene, etc. in a preset amount using a preset button.

(Prior art) The metered liquid supply device has a metered liquid supply function that automatically supplies the set amount of liquid by setting the amount of liquid to be supplied from the keyboard provided on the main body of the device. To prevent overflow, it is equipped with an auto-stop function that stops the liquid supply operation when the liquid level reaches the tip of the liquid supply nozzle.

By the way, this liquid supply amount setting can only be accepted after the liquid supply nozzle is removed from the main body of the device and before the liquid supply operation is started. There was a problem in that even if an integer value of the amount of liquid to be supplied was entered from the keyboard in order to set it to zero, the metered liquid supply function did not work, making the liquid supply process time-consuming.

In order to solve this problem,
As shown in Publication No. 70594, a fluid supply device has also been proposed that allows selection of preset lubrication without operating a preset button based on the presence or absence of a flow rate pulse and a signal from a lubrication designation switch. There is.

(Problem to be Solved by the Invention) According to this, although the preset liquid supply mode is automatically set by interrupting the liquid supply operation, a value smaller than the previously supplied liquid volume is incorrectly set as the preset liquid supply volume. If this setting is made, it is physically impossible to supply liquid, so there is a problem that the liquid supply operation will not start for a long time, wasting time.

The present invention was made in view of these problems, and its purpose is to enable preset liquid supply even after the liquid supply operation has stopped, and to correct incorrect preset volume settings. An object of the present invention is to provide a new liquid supply device that can encourage reliable operation.

(Means for Solving the Problems) In order to solve such problems, the present invention provides a preset amount setting means that can set a preset amount by inputting a nozzle disconnection signal and a flow rate zero signal, and a flow rate setting means. The amount of fluid supplied from the counting means is compared with the preset amount, and if the amount of fluid supplied is larger than the preset amount, a display indicating that the preset amount setting is invalid is output to the display means, and the preset amount is If the amount of liquid is larger than the amount of liquid, the device is provided with means for outputting a liquid supply stop signal when the amount of liquid supplied reaches a preset amount.

(Function) When the refueling operation is completed and the nozzle disconnection signal is still being output and the flow rate is zero, for example, input the preset amount from the preset setting means in order to process the amount of liquid supplied so far as an integer. Then, the amount of liquid supplied by the flow rate counting means and the preset amount are compared. If the supplied liquid amount is larger, a message indicating that the preset amount setting is invalid is displayed to prompt the operator to re-enter the correct preset amount. This enables accurate operation even by workers who are not familiar with the operation. If the preset amount is larger, the liquid supply up to the preset amount is restarted. As a result, integer lubrication can be automatically performed by simply inputting the nearest integer value with good sharpness as the preset amount.

(Example) The details of the present invention will be described below based on illustrated examples.

FIG. 2 shows an embodiment of the present invention, and reference numeral 15 in the figure is a control device to be described later, which operates the pump drive motor 11 when the nozzle switch 5 is turned on. A flow rate pulse transmitter 2 provided on a flow meter 17 communicating with the nozzle 16
The content of the count is displayed on the first display 14 while the pulse signals from 2 display 13, and the liquid supply operation is automatically stopped when the liquid supply amount reaches a set amount.

In the figure, reference numeral 19 indicates a pump, 20 indicates a nozzle hook, and 21 indicates a third indicator provided adjacent to the preset button 8.

FIG. 1 shows an embodiment of the above-mentioned control device 15, and reference numeral 1 in the figure is a flow rate counting means that counts the flow rate pulse signal from the flow rate pulse transmitter 2 and calculates the amount of liquid supplied at the present moment. While calculating the quantity Q and outputting it to the display drive circuit 3 and the comparison means 4,
It is configured to return to zero in response to a nozzle disconnection signal from the nozzle switch 5. Reference numeral 6 denotes a preset amount setting means which is reset to zero by the initial signal of nozzle detachment, and sets the set value from the preset button 8 while the nozzle detachment signal is being input and the flow rate zero signal from the flow rate detection means 7 is being input. When the set value is larger than the counted value of the flow rate counting means 1, the setting data is stored, and this set data is output to the comparing means 4 and the display drive circuit 9, and when the set value is smaller than the counted value, the display information storage means 12 The third display 21 is configured to transmit an error message output and display a re-input instruction on the third display 21. Reference numeral 4 is a comparison means, which inputs the current supply amount Q and setting data, outputs an ON signal for the motor control means 10 when the supply amount is less than the setting data, and outputs an OFF signal when they match to drive the pump. It is configured to stop the motor 11.

Note that the reference numeral 14 in the figure indicates the first
Indicates an indicator.

Next, the operation of the apparatus configured as described above will be explained based on the flowchart shown in FIG.

When the nozzle 16 is removed from the nozzle hook 20, (a) the nozzle switch 5 is turned on and a nozzle removal signal is output, and the flow rate counting means 1 and preset amount setting means 6
returns to zero and turns on the motor control means 10.
The signal is transmitted and the pump drive motor 11 is activated.
(B). If you do not preset before supplying liquid, (c) When you open the valve of nozzle 16 and start supplying liquid, the flow meter 17
A pulse signal is output from the flow rate pulse transmitter 2 provided in is displayed as the momentary amount of fluid supplied (d). In this way, the liquid supply progresses until the tank is almost full, and the valve of the nozzle 16 is closed to temporarily stop the liquid supply operation (E). Assume that this liquid supply is performed in an amount that results in a fraction, for example, an amount that results in a fraction of 0.5, such as 9.5. In order to organize this fraction and perform so-called integer lubrication, the preset button 8 is operated when the liquid supply is temporarily interrupted, that is, before the nozzle 16 is hung on the nozzle hook 20 with the flow rate from the time flow rate measuring means 7 being zero. If you enter 9
(g) Compare the value of 9.5 on the flow rate counting means (h), and output a signal to the display information storage means 12 indicating that preset liquid supply is impossible because the preset amount is smaller, and display an error on the third display 21. The display prompts the operator to correct the preset amount (re). At this stage, re-enter an integer value of 10, which is larger than the amount of liquid supplied at the time of interruption. At this point, the liquid supply operation is only temporarily interrupted (e), the nozzle switch 5 is still maintained in the ON state (f), and the input of the preset amount (g) is based on the value of the flow rate counting means. Because it's big (ch)
At the same time, the preset amount 10 is displayed on the second display 13. In such a state, if you open the valve of the nozzle 16 again and restart the liquid supply,
The flow rate counting means 1 restarts the integration by increasing the pulse signal from the flow rate pulse transmitter 2 from the integrated value of 9.5 before the suspension of liquid supply, and displays it on the first display 14.
(nu). When the amount of liquid supplied after restarting the liquid supply becomes 0.5 and the flow rate counting means 1 counts up 10, the comparison means 4 outputs a signal to stop the pump drive motor 11 (l), and the total amount of liquid supplied is calculated. Stop the liquid supply when the is adjusted to an integer value of 10 (E).

If you want to preset before supplying liquid, remove the nozzle 16 from the nozzle hook 20 and switch the nozzle switch 5.
is turned on (a), the flow rate counting means 1 and the preset amount setting means 6 return to zero, and at the same time, the pump driving motor 11 starts operating (b). At this stage, if you set the preset amount using preset button 8,
(c) This preset amount is the preset amount setting means 6
At the same time, the preset amount is displayed on the second display 13.

When the valve of the nozzle 16 is opened to start supplying liquid in such a state, the comparison means 4 compares the amount of liquid supplied from the flow rate counting means 1 and the preset amount of the preset amount setting means 6, so that both When they match, a signal is output, the pump drive motor 11 is stopped, and the preset amount of liquid is supplied (E). If the tank becomes full before reaching the preset amount (L), the nozzle 16 is hooked to the nozzle hook 20 (W), and the pump drive motor 11 is stopped to stop liquid supply (E).

In this embodiment, the liquid supply stop operation is performed by stopping the rotation of the pump drive motor, but the same effect can be achieved by closing the valve provided in the pipe line communicating with the nozzle 16. Needless to say, it works.

(Effects) As explained above, according to the present invention, after liquid supply is performed by non-preset liquid supply, at the stage when this liquid supply operation is stopped, the nozzle disconnection signal and the zero flow rate signal are input. The preset amount setting means, which enables the preset amount to be set, compares the liquid supply amount from the flow rate counting means with the preset amount, and if the liquid supply amount is larger than the preset amount, the preset amount setting is invalid. The display means outputs an indication that the preset amount is present, and also outputs a liquid supply stop signal when the preset amount reaches the preset amount if the preset amount is larger than the amount of liquid supplied, so it is possible to Even if fluid supply is interrupted and switched to preset fluid supply, if the input preset amount is smaller than the previously supplied fluid amount, this will be displayed on the display means and the appropriate preset amount can be re-entered. This allows workers to quickly correct operational errors.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a device showing an embodiment of the present invention, FIG. 2 is a block diagram showing an outline of a liquid supply device to which the present invention is applied, and FIG. 3 is a diagram showing the operation of the same device. It is a flowchart. 2...Flow rate pulse transmitter, 11...Pump drive motor, 17...Flow meter.

Claims (1)

[Claims] 1 After liquid supply is performed using non-preset liquid supply,
At the stage when this liquid supply operation is stopped, a preset amount setting means that can set a preset amount by inputting a nozzle disconnection signal and a flow rate zero signal, and a preset amount setting means that can set a preset amount by inputting a nozzle disconnection signal and a flow rate zero signal, and a Comparison is made, and if the amount of liquid supplied is larger than the preset amount, a display indicating that the setting of the preset amount is invalid is output to the display means, and if the preset amount is larger than the amount of liquid fed, A liquid supply device comprising means for outputting a liquid supply stop signal when the liquid supply amount reaches a preset amount.