JP2790480B2 - Liquid supply device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a liquid supply device for mixing and supplying two kinds of liquids in a desired ratio.

(Prior Art) Due to the diversification of vehicle types, not only demand for fuel gasoline for regular gasoline and high octane gasoline, but also demand for gasoline having various octane numbers has arisen.

The liquid supply device disclosed in Japanese Patent Publication No. 49-40249 is designed to meet such demands and provides not only regular gasoline and high-octane gasoline but also gasoline in which these are mixed at a certain ratio. Although it is made possible, there is a problem that even with such a device, it is not possible to provide octane number gasoline according to customer's preference.

(Problems to be Solved by the Invention) The present invention has been made in view of such a problem, and an object of the present invention is to provide a new supply capable of mixing and supplying two kinds of liquids in a desired ratio. A liquid device is provided.

(Means for Solving the Problems) That is, according to the present invention, as a liquid supply device for achieving the object, a first liquid supply pipe extending from a first liquid tank and a second liquid tank and a second liquid supply line are provided. Each of the liquid supply pipes is branched, and one pipe is connected to a liquid supply nozzle via a valve, and the other pipe is connected to a liquid supply nozzle via a constant pressure supply device and a valve. The opening and closing of each valve of one liquid supply line is controlled in accordance with the specified mixing ratio of the two liquids.

(Operation) With this configuration, two kinds of liquids can be mixed with various mixing ratios by using as few valves as possible by combining the valves that open and close (Examples). An example will be described.

In the figure, reference numerals 1A and 1B denote drive motors M _A and M _B , respectively.
A first liquid supply pump and a second liquid supply pump which are driven to feed the liquids contained in the first liquid type tank 2A and the second liquid type tank 2B, respectively. Are configured as first and second feed pumps 1A and 1B for feeding regular gasoline and high octane gasoline.

The liquid supply pipe 4A connected to the discharge side of the first liquid supply pump 1A is
While connected to the first flow meter 5A directly through the first valve V _1, and connected to one of the liquid chamber 72a of the constant pressure supply device 7 to be described later, the supply fluid is further disposed parallel from here Tube 41A, 42A
The liquid supply pipe 4B connected to the first flow meter 5A via the upper second valve V ₂ and the third valve V ₃ and connected to the discharge side of the second liquid supply pump 1B is connected to the sixth liquid supply pump 1B. of one connected to the second flowmeter 5B directly through the valve V _6, and connected to the other fluid chamber 72b of the pressure supply device 7, the liquid supply pipe 41B was further disposed parallel from here, 42B
The second flowmeter 5B through the fourth valve V ₅ of the valve V ₄ and the fifth upper
Connected to

On the other hand, liquid supply pipes 8A and 8B are connected to the discharge sides of the first and second flow meters 5A and 5B, respectively.
Is connected to a liquid supply nozzle 10 with a check valve 9 via each pipe 8A, 8B.

Reference numeral 3 in the figure indicates a relief valve, and 6A,
6B shows a flow rate pulse transmitter provided in each of the flow meters 5A and 5B.

As shown in FIG. 3, the constant pressure supply device 7 has first
First and second inflow ports 71a and 71b connected to the liquid supply pipe 4A and the second liquid supply pipe 4B are provided, and a first liquid chamber 72a and a second liquid chamber 72B are defined at the center. The piston 33 is swingably disposed. At the end of the rod 74 of this piston 73,
Valves 75a, 75b are provided, each inlet 71a, 71b and the liquid chamber
The opening degrees of the through holes 76a and 76b connecting the 72a and 72b are configured to be variable, and the first and second liquid chambers 72a and 72b defined by the piston 73 are respectively provided with discharge ports 77a and 77b. have is provided, the liquid chambers 72a, the liquid a second flowing into the 72b, the third valve V _2, V ₃ and a fourth, fifth valves V _4, first via respective V _5, The second flow meters 5A and 5B are configured to feed the liquid to the liquid supply nozzle 10.

The check valve 9 provided on the liquid supply nozzle 10 is provided to prevent the liquid from flowing around when the constant pressure supply device 7 fails or when only one liquid is supplied. As shown in FIG. 4, the check valve 9 has the first,
The respective inlets 91a and 91b connected to the second liquid supply pipes 8A and 8B are configured to be always closed from downstream by valves 93a and 93b urged by springs 92a and 92b.

Next, according to FIGS. 1 and 2, each of the liquid supply pumps 1A and 1B will be described.
A flow meter 5A, for each valve V ₁ ~V ₆ provided between 5B will be described.

The first valve V ₁ is driven by a solenoid SOL ₁ and is configured as a solenoid valve for controlling the supply of the first liquid, that is, the regular gasoline itself.
It opened by operating the PB _1. That is, when the push button switch PB ₁ is pressed, the relay coil C of the column number 1 is pressed.
When R ₁ is excited, the self-holding circuit in column 2 stores this operation and energizes the solenoid SOL ₁ in column 21 to cause the first valve V ₁
To release.

Similarly, the sixth valve V ₆ is driven by a solenoid SOL ₆ as an electromagnetic valve for controlling the supply of the second liquid, that is, the high octane gasoline itself, and is operated by operating the push button switch PB ₁₀ so that the relay coil CR of the row 19 is operated. ₁₀ is energized to energize the solenoid SOL ₆ in column number 42 to open the _sixth valve V6.

Incidentally reference numeral LS indicates a switch to open these contacts when the time or supply fluid volume was subjected to nozzle multiplying 11 the liquid supply nozzle 10 has reached the preset amount, also, CR ₂ ~
Reference numeral ₁₀ denotes a priority circuit switch for giving priority to an earlier signal even if another push button switch is operated at the same time.
A switch that closes the contacts by removing the switch, Tr indicates a transformer.

On the other hand, the second and third valves V ₂ and V ₃ on the conduits 41A and 42A connected to the first discharge port 77a of the constant pressure supply device 7 and the second discharge port
Fourth and fifth valves V ₄ , V ₅ on lines 41B, 42B connecting to 77b
Are configured such that their opening cross-sectional areas are different from each other. Then, for example, the opening sectional area is V ₂ = V ₄ , V ₂ <V ₅ <
By causing the opening and closing operation as shown in Table 1 of using a valve V ₂ ~ ₅ as having a relationship of V _3, it is configured to be blended small increments in eight steps octane.

That is, pressing the push button switch PB ₂ to supply gasoline octane number 91, the solenoid SOL ₂ columns numbered 22, 23, and 24 via the relay coil CR ₂ rows numbered 3, SOL _3, SOL ₄
Is supplied with electricity, and as shown in Table 1, the second, third and fourth valves V ₂ , V ₃ and V ₄ are opened, and the respective discharge ports 77 a and 7 of the constant pressure supply device 7 are opened.
Regular gasoline and high octane gasoline discharged from 7b are supplied to the liquid supply nozzle 10 at flow rates corresponding to the respective opening cross-sectional areas, where they are blended into octane number 91 gasoline.

Returning again to the first, the display indicated by reference numeral 16 includes a liquid supply amount display section 17, a price display section 18, a unit price display section 19, a liquid supply amount display section 20 for regular gasoline and high octane number gasoline, 21 are provided.

The pulse signals from the flow rate pulse transmitters 6A and 6B connected to the corresponding flow meters 5A and 5B are input to the regular gasoline supply amount display section 20 and the high octane number gasoline supply amount display section 21. Then, the supply amounts of the regular gasoline and the high octane number gasoline are displayed, and a signal from the arithmetic circuit, which has been added based on both pulse signals, is input to the supply amount display section 17 to obtain the total supply amount. Is configured to be displayed. Furthermore, the unit price display section 19 by operating any of the push button switch PB ₁ ~PB _10, so that the price data of octane gasoline from the corresponding stored in the unillustrated memory circuit data is read and displayed The price display section 18 is configured to display the price data and the integrated value of the total supply amount.

 Note that reference numeral 15 in the drawing denotes a sequence control circuit.

In the device configured as described above, for example, when supplying gasoline with a specified octane number of 95,
First, the corresponding pushbutton switch PB on the operation panel 13
Press ₆ . As a result, the relay coil CR _{6 in} column 11 shown in FIG. 2 is excited, and this state is held by the self-holding circuit in column 12, and the solenoids SO in column 32 and 33 are
L ₂ and SOL ₄ are energized and the second and fourth valves V ₂ and V ₄ are opened. Next, remove the liquid supply nozzle 10 from the nozzle hook 11 and insert it into the inlet of the fuel tank. Pull the lever.

As a result, the nozzle switch MS closes the contacts of the circuits of the motors M _A and M _B , and the first and second liquid supply pumps 1 A,
1B starts operation, the first liquid type tank 2A and the second liquid type tank 2A respectively.
Regular gasoline and high octane gasoline are sent from the liquid type tank 2B into the constant pressure supply device 7. Here, for example, when the liquid pressure of the high octane gasoline flowing from the right inlet 72b is higher than the liquid pressure of the regular gasoline, The piston 73 in the liquid chamber 72 is moved to the left in the figure, and the opening of each through hole 76a, 76b is adjusted by valves 75a, 75b integrated therewith so as to be in inverse proportion to the liquid pressure. For this reason, the regular gasoline and the high octane number gasoline discharged from the discharge ports 77a and 77b of the constant pressure supply device 7 have different opening cross-sectional areas, respectively, from the second and fourth valves V ₂ and V ₄ through the respective flow meters 5A, After flowing into the liquid supply nozzle 10 via 5B, the gas is blended as gasoline having an octane number of 95 according to the flow amount, and then supplied into the fuel tank.

On the other hand, the first and second flow meters 5A and 5B rotate in proportion to the flow rate of each gasoline.
After being transmitted to 6B and converted into a pulse signal, it is input to an arithmetic circuit (not shown). Each value integrated here is displayed on the regular gasoline supply amount display section 20 and the high octane number gasoline supply amount display section 21, and the value obtained by adding these values is used as the total supply amount display section. Appears on 17. Moreover The arithmetic circuit, because the unit price data corresponding to the octane number 95 from the storage circuit (not shown) with the operation of the push button switch PB ₆ is entered, where it is accumulated the total liquid feed quantity and unit price, the The integrated value is displayed on the price display section 18 as a price.

Then, when the fuel tank becomes full by the subsequent liquid supply or when the liquid supply amount reaches a preset liquid supply amount, the column number 11
Is demagnetized relay coil CR ₆ open switch LS is contact, closing the second, fourth valve V _2, V ₄ turned down the energization of the solenoid SOL _2, SOL ₄ columns numbered 32 and 33, also The motors M _A and M _B also stop, and the liquid supply ends. In the case of ordinary liquid supply, liquid supply nozzle 10 switch LS is opened by multiplying the nozzle hanging 11, the second, fourth valve V _2, V ₄ is closed, the motor M _A, M _B is stopped at the same time And the liquid supply ends.

Embodiment shown in Fig. 5, saving with a more simplified device shown in Figure 1, which was no more easy operability, the second valve V ₂ from the liquid supply system of regular gasoline It is configured as what was.

In this device, three valves involved in octane change
As V ₃ , V ₄ , and V ₅ , the opening cross-sectional areas are, for example, V ₃ = V ₅ , V ₄ <V ₅
The octane number is set to five levels by using valves having the following relationship and combining these opening and closing operations as shown in Table 2.

The above is the description of the embodiment made different opening cross-sectional area of the valve V ₂ ~V _5, as made different flow passage cross-sectional area of the duct itself with these valves V ₂ ~V ₅ Can also be configured.

Further, the present invention can be configured as a device for mixing two types of chemical liquids and the like, in addition to a device for supplying gasoline having an arbitrary octane number.

Further, FIG. 2 shows that the two motors M _A and M _B are simultaneously operated by the nozzle switch MS.
This is a because omit illustration of a motor control circuit, for example, when regular gasoline only as to supply liquid, refers that only the first motor M _A is intended to be controlled to operate Not even.

(Effects) As described above, according to the present invention, at least two valves having different cross-sectional areas from the constant pressure supply device in each of the two types of liquid supply pipes to the liquid supply nozzle. Is provided to control the opening and closing of the valves provided in each conduit in accordance with the specified mixing ratio. In addition to mixing at a ratio, a device having the required number of mixing stages can be easily configured simply by increasing or decreasing the valve.

[Brief description of the drawings]

FIG. 1 is a block diagram of an apparatus showing one embodiment of the present invention, FIG. 2 is a sequence circuit diagram partially omitted, FIG. 3 is a sectional view of a constant pressure supply device, and FIG. FIG. 5 is a cross-sectional view of a check valve mechanism provided in a nozzle, and FIG. 5 is a configuration diagram showing another embodiment of the present invention. 1A, 1B… Supply pump 2A, 2B… Liquid tank 5A, 5B… Flow meter 6A, 6B… Flow pulse transmitter 9… Check valve 10… Constant pressure supply device 13… Operation panel 16 … Indicator V _{1 to} V ₆ … Valve MS… Nozzle switch PB _{1 to} PB ₆ … Pushbutton switch CR _{1 to} CR ₆ … Relay coil SOL _{1 to} SOL ₆ … Solenoid

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B67D 5/00-5/70

Claims (1)

(57) [Claims] 1. A first liquid supply line and a second liquid supply line extending from a first liquid tank and a second liquid tank, respectively, and one of the lines is connected via a valve. Means for connecting the other conduit to the liquid supply nozzle via a constant pressure supply device and a valve, and for controlling the opening and closing of each valve of the two liquid supply conduits in accordance with the specified mixing ratio of the two liquids. Liquid supply device provided with.