JPH07110678B2 - Liquid supply device - Google Patents

Description

TECHNICAL FIELD The present invention relates to two types of liquids of different types and a device for supplying the two types of liquids at a constant ratio.

(Prior Art) Due to the diversification of vehicle types, in addition to regular gasoline and high-octane gasoline, demand for gasoline having an intermediate octane is also increasing.

In order to respond to such a trend, there has been proposed regular gasoline and high octane gasoline, and a liquid supply device capable of supplying these two types at a constant ratio with a single liquid supply device (Japanese Patent Publication No. Sho 49). No. 40249), there is a problem that the cost of the apparatus increases because a display means is required for each liquid type.

(Purpose) The present invention has been made in view of such a problem, and an object of the present invention is to set the liquid supply amounts of three types of liquid to 1
Another object of the present invention is to provide a novel liquid supply device capable of displaying by one display means.

(Summary of the Invention) That is, a feature of the present invention is that a branch pipe is connected to a discharge port of a pump that feeds a first liquid, and one of the discharge ports is connected to a first flow rate measuring means via a first flow rate measuring means. 1 supply nozzle,
The other discharge port is connected to one of the inlets of the constant-ratio supply unit to which the third liquid supply nozzle is connected to the discharge port through the third flow rate measuring unit, and the second liquid is sent. A branch pipe is connected to the discharge port of the pump, and one discharge port is connected to the second liquid supply nozzle via the second flow rate measuring means, and the other discharge port is connected to the other inlet port of the constant ratio supply means. Control means for connecting and outputting the flow rate signal from each of the flow rate measuring means to the display means, and stopping the pump during liquid feeding when a plurality of the liquid supply nozzles are removed, and operating the notifying means The point is that it is equipped with.

(Examples) Therefore, the details of the present invention will be described below based on illustrated examples.

FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 is a flow meter having a flow pulse transmitter 2.
The inflow port is connected to the discharge port of the first pump 4 communicating with the liquid species tank via the branch pipe 5, and the discharge port is connected to the first liquid supply nozzle 6.

Reference numeral 11 is a flow meter having a flow pulse generator 12, which is connected to a discharge port of a second pump 14 communicating with the second liquid species tank via a branch pipe 15, and the discharge port is a second liquid supply nozzle. Connected to 16. Reference numeral 30 denotes a stoichiometric supply device, which has two inflow passages 32 and 33 communicating with a merging chamber 31 in which two kinds of liquids merge as shown in FIG. , 33, inflow ports 32a, a conical body 35 with a narrower 33a side,
Ring-shaped baffle plates 37 and 38 having through holes 37a and 38a in the central portion so as to penetrate 36 are disposed on the inlet side by springs 39 and 40 so as to be axially movable and to be joined together. On the side
Check valves 43 and 44, which are normally urged by springs 41 and 42 so as to close the inflow passages 32 and 33, are attached, and these check valves 43 and 44 are always attached to the outlet 34 side by springs 45 and 46. It is configured by providing energized pressure release valves 47, 48,
Each inlet 32a, 33a is connected to a pump 4, 14 via a branch pipe 5, 15, respectively, and an outlet 34 is connected via a flow meter 21 with a flow pulse transmitter 22 to a third feed nozzle 26. It is connected to the.

Returning to FIG. 1 again, reference numeral 17 in the drawing is a control device, and as shown in FIG. 3, the first, second, and third liquid supply nozzles 6, 16,
While the signals from the nozzle switches 7, 8 and 9 operated by 26 and the flow rate pulse signals from the flow rate pulse oscillators 2, 12 and 22 are input, the liquid supply operation of the flow rate pulse oscillators 2, 12 and 22 is performed. The integrated value of the pulse signal from the flow meter communicating with the inner liquid supply nozzle is output to the display unit 18, and the other liquid supply nozzle is removed while one liquid supply nozzle is removed. Is detected, the operation of the pump is stopped, and at the same time, the alarm device 19 issues a message indicating a “malfunction”. In the figure, reference numerals 3 and 13 indicate pump motors, respectively.

Next, the operation of the apparatus thus configured will be described based on the flowcharts shown in FIGS.

When the first liquid supply nozzle 6 is removed to supply the first liquid type,
The nozzle switch 7 attached to this outputs an ON signal (Fig. 4, step a). As a result, the indicator 18 is reset to zero, and at the same time, the first pump 4 that feeds the first liquid type is activated (FIG. 5, Step B).

When the liquid supply is started in this state, a pulse proportional to the flow rate is output from the flow rate pulse transmitter 2 of the flowmeter 1 communicating with the first pump 4, and the liquid supply amount is displayed on the display 18 (step C). . In the liquid supply process, the first liquid type is supplied from the pump 4 to the stoichiometric supply device 30 via the branch pipe 5, but the third liquid supply nozzle 26 and the second flow path 33 are checked. Since the valve 4 is closed, the third liquid supply nozzle 26 and the second liquid supply nozzle 26
It does not flow into the flow path 33.

During such a liquid supply operation, the second and third liquid supply nozzles 16, 26
When the switch is removed, the nozzle switches 8 and 9 attached to these
Is activated and outputs a signal (step E, F),
The control device 17 stops the first pump 4 that is currently operating, and at the same time issues a malfunction from the alarm device 19 (step
To, Chi). By this notification, the second and third liquid supply nozzles 1
When 6 and 26 are reengaged and the nozzle switches 8 and 9 are turned off (step, n), the first pump 4 starts to operate again and restarts the liquid supply, and is added to the liquid supply amount before the stop. Display and stop notification at the same time (step, w).

In this way, when the supply of the predetermined amount of liquid is completed and the first liquid supply nozzle 6 is returned to the nozzle hook, the nozzle switch 7 is turned off.
It becomes F (step D), and the first pump 4 stops (step W).

Further, when the second liquid type is supplied, the liquid supply is performed through the same process as the above-described first liquid type supply (fourth type).
Figure Step Power, Figure 6 Step Yo to O).

On the other hand, when the third nozzle 26 is removed in order to supply the third liquid type in which the first and second liquids are mixed, the nozzle switch 9 turns ON (step in FIG. 4) and the first pump 4 and the second pump 14 operate together, and at the same time, the display 18 returns to zero (stepma). When the liquid supply is started in this state, the liquids of the first and second liquid types sent from the pumps 4 and 14 are
They flow into the constant ratio feeder 30, respectively. Each inlet 32a, 33a
The liquid flowing in from the check valve 4 resists the springs 41 and 42.
The valves 3 and 44 are opened to flow out from the third liquid supply nozzle 26 via the merging chamber 31. In this process, the first and second liquid species move the baffle plates 37 and 38 to the outflow side to a position where the respective liquid pressures and the reaction forces of the springs 39 and 40 are parallel to each other, so that a constant ratio is achieved. It will flow into 31. not to mention,
Since the first and second liquid supply nozzles 6 and 16 are closed,
The liquid from each pump 4, 14 will flow into the stoichiometric supply device 30.

The outflow amount of the fluid of each of these liquid types is measured by the third flow meter 21, and a pulse signal is output from the flow rate pulse transmitter 22 attached thereto. This pulse signal is displayed on the display 18 as the liquid supply amount (step K). In this state, when the first or second liquid supply nozzle 6, 16 is removed, the nozzle switches 7, 8 attached to these are turned on.
Therefore, both the first and second pumps stop, and at the same time, the alarm device 19 issues a "malfunction" (steps A, S). By this notification, the first and second liquid supply nozzles 6 and 16 are returned to the nozzle hooks,
When the nozzle switches 7 and 8 attached to them are turned off (step key, you), the first and second pumps 4 and 14 start operating again, and the supply of the third liquid type is restarted, and at the same time. Notification stops (step, mi). When the supply of the third liquid type is completed and the nozzle switch 9 is turned off (step S), the first and second pumps 4 and 14 are stopped (step S).

In addition, when the liquid pressure in the hose rises due to a rise in temperature when the liquid supply is stopped, the pressure release valves 47, 48 cause the spring 45,
Moves against 46, causing liquid in the hose to flow back into the tank to prevent excessive pressure buildup.

(Effects) As described above, according to the present invention, the branch pipe is connected to the discharge port of the pump that feeds the first liquid, and one of the discharge ports is connected to the first flow rate measuring means through the first flow rate measuring means. And the other discharge port are connected to one inflow port of the constant ratio supply means to which the third liquid supply nozzle is connected to the discharge port via the third flow rate measuring means. A branch pipe is connected to the discharge port of a pump that feeds the second liquid, one discharge port is connected to the second liquid supply nozzle via the second flow rate measuring means, and the other discharge port is connected to the constant ratio supply means. The flow rate signal from each flow rate measuring means is output to the display means while being connected to the other inflow port, and when a plurality of liquid supply nozzles are removed, the pump that is delivering liquid is stopped and the notification means is operated. Since the control means is provided, the liquid supply amount of one liquid selected from three or more kinds of liquids can be adjusted. Not only the structure can be simplified by displaying with one display means, but when another nozzle is removed during liquid supply, the liquid supply is stopped and the notifying means is operated to perform measurement. It is possible to reliably prevent the occurrence of an error.

[Brief description of drawings]

FIG. 1 is a block diagram of an apparatus showing an embodiment of the present invention, FIG. 2 is a sectional view showing an embodiment of a constant ratio feeder, and FIG. 3 is a block diagram showing an embodiment of a control device, and 4 to 7 are flowcharts showing the operation of the above apparatus. 1, 11, 21 ...... Flowmeter 2, 12, 22 …… Flow pulse transmitter 4, 14 …… Pump 6, 16, 26 …… Liquid supply nozzle 17 …… Control device 18 …… Display, 19 …… Alarm 30: constant ratio supply means

Claims (1)

[Claims] 1. A branch pipe is connected to a discharge port of a pump for feeding a first liquid, and one discharge port is discharged to a first liquid supply nozzle via a first flow rate measuring means and another discharge port is discharged. The outlet is connected to one of the inlets of the constant-ratio supply means to which the third liquid supply nozzle is connected to the discharge opening through the third flow rate measuring means, and the second
A branch pipe is connected to a discharge port of a pump for feeding the liquid, and one discharge port is connected to a second liquid supply nozzle via a second flow rate measuring means, and the other discharge port is connected to the constant ratio supply means. While connecting to the other inflow port, the flow rate signal from each of the flow rate measuring means is output to the display means, and the pump is stopped when a plurality of the liquid supply nozzles are removed,
A liquid supply device comprising a control means for activating an informing means.