JPH0741095A - Fuel feeding device - Google Patents

Abstract

PURPOSE:To prevent fuel liquids from being mixed by a method wherein first and second switching valves are switch-controlled, and a pump is drive- controlled, and a fuel liquid in a fuel storage tank is made to circulate through a first fuel feeding pipe, general purpose pipe and second replenishing pipe. CONSTITUTION:One-end sides of general purpose pipes 4A-4C are selectively connected to first fuel-feeding pipes 2A-2C and first replenishing pipes 14A-14C by the switching of first switching valves 3A-3C. Also, the other end sides of the general purpose pipes 4A-4C are selectively connected to second fuel feeding pipes 6A-6C and second replenishing pipes 15A-15C by the switching of second switching valves 5A-5C. Then, at the time of replenishments of fuel liquids A, B, C, a suction pipe 9 is selectively connected to either one of the first replenishing pipes 14A-14C by the switching of third switching valves 11, 12. Thus, fuel liquids in fuel storage tanks 1A-1C are made to circulate in the first fuel-feeding pipes 2A-2C, general purpose pipes 4A-4C and second replenishing pipes 15A-15C. Therefore, fuel liquids can be assuredly prevented from being mixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply device preferably used as, for example, a vehicle oil supply meter, an oil exchanger, a lorry vehicle, or the like.

[0002]

2. Description of the Related Art Generally, an oil supply pipe having one end connected to an oil storage tank for storing oil liquid and the other end connected to an oil liquid discharge port, and a pump and a flow meter provided in the middle of the oil supply pipe are provided. The provided refueling device is, for example, a vehicle refueling weighing machine,
It is widely applied to oil changers or trucks.

A vehicle refueling meter according to this type of prior art stores an oil liquid (including regular gasoline, high-octane gasoline or light oil, for example) in a storage tank such as a stock tank or a drum, and stores the oil when refueling. An oil liquid such as gasoline in a tank is supplied to a refueling target (for example, a fuel tank of a vehicle) from a refueling nozzle serving as a discharge port while measuring a refueling amount through a pump and a flow meter. When the remaining amount of oil liquid in the oil storage tank becomes low, the oil liquid is replenished into the oil storage tank from an external oil tank or the like.

Further, the oil changer includes engine oil,
Equipped with an oil storage tank that stores oil liquid such as cleaning oil and a waste oil tank that temporarily stores waste oil.When exchanging engine oil, first use the waste oil nozzle to recover the waste engine oil from the engine oil pan. After that, while measuring the amount of unused engine oil (new oil) in the oil storage tank through the pump and the flow meter, the oil of the engine that is the target of oil supply from the oil supply nozzle (new oil nozzle) that is the discharge port Fill the pan with oil.

If necessary, cleaning oil is supplied to the oil pan after collecting the waste oil to clean the oil pan, and engine oil as new oil is supplied to the oil pan after cleaning. ing.

As described above, even in the oil exchanger, since the oil liquid is supplied from the oil storage tank to the object to be refueled, when the remaining amount of the engine oil or the cleaning oil in the oil storage tank becomes small, the oil tank is supplied from the external oil tank or the like. It is necessary to replenish the oil liquid in the oil storage tank.

[0007] Further, the Lori vehicle is replenished from an oil tank or the like outside the vehicle, and oil liquid such as kerosene stored in a vehicle-mounted oil storage tank is measured at the time of refueling while measuring the amount of refueling through a pump and a flow meter, and at the discharge port. The oil liquid is supplied to the kerosene tank or the like to be refueled from the refueling nozzle.

Also, even in a lorry vehicle, since the oil liquid is supplied from the oil storage tank to the refueling object, when the remaining amount of the oil liquid in the oil storage tank becomes small, the oil liquid is replenished from the external oil tank or the like into the oil storage tank. There is a need to.

In the oil supply device as described above, one end of the oil supply pipe is connected to the oil storage tank, and the other end of the oil supply pipe is connected to an oil supply nozzle serving as a discharge port. A pump and a flow meter are provided, and the amount of oil supplied from the oil supply nozzle by driving the pump is measured by the flow meter.

Further, when the remaining amount of the oil liquid in the oil storage tank becomes low, it is necessary to replenish the oil liquid from the external oil tank into the oil storage tank. Therefore, a replenishment pipe is provided between the external oil tank and the oil storage tank. A pump or the like is provided in the middle of the replenishing pipe so that the oil liquid can be replenished from the oil tank into the oil storage tank by driving the pump. Then, a liquid level sensor, etc., that detects the liquid level of the oil liquid is installed in the oil storage tank, and the remaining amount of the oil liquid stored in the oil storage tank is detected by the liquid level sensor to determine the remaining amount of oil liquid in the oil storage tank. So that you can always check.

[0011]

By the way, in the oil exchanger as the above-mentioned conventional oil supply device, a pump and a flow meter are provided in the middle of an oil supply pipe for supplying oil liquid such as engine oil, and an external oil tank or the like is used. Since a separate pump is provided in the middle of the replenishment pipe for replenishing the oil liquid in the oil storage tank, it is necessary to provide a pump for pumping the oil liquid for each pipe, which reduces the number of pumps used. Not only the number of oil supply pipes increases, but the oil supply pipes and the supply pipes are completely separated from each other. Therefore, there is a problem that the entire structure becomes complicated and the workability and maintenance during assembly deteriorate.

Further, even in a vehicle refueling meter or a lorry vehicle according to the prior art, when the remaining amount of the oil liquid in the oil storage tank becomes low, the oil liquid is replenished from the external oil tank or the like into the oil storage tank. For this purpose, an external oil tank and an oil storage tank are connected by a replenishment pipe, and a pump or the like is provided in the middle of the replenishment pipe, so that the oil supply pipe and the replenishment pipe are completely separate systems. Therefore, there is a problem similar to that of the oil exchanger.

Therefore, the inventors of the present invention firstly connected a first oil supply pipe having one end connected to an oil storage tank for storing oil liquid and the other end connected to a first switching valve, and one end connected to the first oil supply pipe. A dual-purpose pipe connected via the first switching valve and the other end side connected to the second switching valve, and one end side connected to the dual-purpose pipe via the second switching valve and the other end side to the oil liquid discharge port. A second oil supply pipe connected to the oil storage tank, and one end of the second oil supply tank is connected to an oil tank for replenishing the oil storage tank with oil from the outside, and the other end is connected to the first oil supply tank
A first supplementary pipe connected to the dual-purpose pipe through a switching valve,
One end side is connected to the dual-purpose pipe via the second switching valve,
A second supply pipe having the other end connected to the oil storage tank;
An oil supply device (hereinafter referred to as the prior art) including a pump provided in the middle of the dual-purpose pipe has been proposed.

Further, in the oil supply device according to this prior art, if the first and second switching valves are switched so that both ends of the dual-use pipe are connected to the first oil supply pipe and the second oil supply pipe,
By driving the pump provided in the middle of the dual-purpose pipe, the oil liquid in the oil storage tank can be easily supplied to the object to be supplied from the discharge port. Further, if the first and second switching valves are switched so that both ends of the dual-purpose pipe are connected to the first replenishment pipe and the second replenishment pipe, the pump is driven in this state so that an external oil tank The oil tank can be easily replenished to the oil storage tank, and the pump can be used for both refueling and replenishing the oil liquid. There are advantages that it can be simplified and the workability during assembly can be improved.

However, in this prior art, with the first and second switching valves switched so as to connect the dual-use pipe to the first and second replenishment pipes, oil liquid is supplied from an external oil tank into the oil storage tank. If you try to send the oil liquid into the oil storage tank to the last oil liquid without waste when replenishing, the dual-use pipe will be filled with air together with each of the supplementary pipes when the replenishment is completed. When the oil liquid in the oil storage tank is to be supplied from the oil supply nozzle by connecting to the first and second oil supply pipes, the air remaining in the dual-use pipe will be supplied from the oil supply nozzle together with the oil liquid. There is an unsolved problem that an accurate amount of oil cannot be measured with a flow meter.

Also, when the oil liquid runs out in the oil tank while the oil liquid is being replenished from the external oil tank, the dual-use pipe is filled with air instead of the oil liquid. When the oil liquid is supplied thereafter, the air in the dual-purpose pipe is supplied together with the oil liquid, which causes the same problem as described above.

Furthermore, in an oil supply device such as an oil exchanger, a vehicle oil supply meter or a lorry vehicle, which is configured to selectively supply a plurality of kinds of oil liquid to an object to be supplied, the oil in each storage tank is filled at the time of oil supply. Oil liquid is supplied to the object to be lubricated from the corresponding lubrication nozzle via the pump and flow meter, and when the remaining amount of oil liquid in each oil storage tank becomes low, it is sucked into one of the oil tanks. The pipes are selectively connected, and the oil liquid of the corresponding liquid type is replenished into the oil storage tank from the oil tank to which the suction pipe is connected.

However, in the case of handling a plurality of types of oil liquids as described above, when the oil liquid is replenished from the external oil tank into the corresponding oil storage tank, for example, a single suction pipe and a replenishment pipe are used to supply the external liquid. If you try to connect between the oil tank and each oil storage tank, a part of the oil liquid may remain in the suction pipe and the supply pipe even after the oil liquid is replenished. It may get mixed in the oil storage tank.

The present invention has been made in view of the above-mentioned problems of the prior art. The present invention allows an accurate amount of oil supply to be measured by a flow meter when oil is supplied, and the number of parts such as pumps can be reduced to reduce the work required during assembly. Performance and maintainability can be improved,
An object of the present invention is to provide an oil supply device capable of reliably preventing mixing of these oil liquids even when replenishing and supplying a plurality of types of oil liquids.

[0020]

In order to solve the above-mentioned problems, in the invention according to claim 1, one end side is connected to an oil storage tank for storing oil liquid, and the other end side is connected to the first switching valve. The first oil supply pipe and one end of the first oil supply pipe are the first
A dual-purpose pipe that is connected through a switching valve and the other end side is connected to a second switching valve, one end side is connected to the dual-purpose pipe through the second switching valve, and the other end side is connected to an oil liquid discharge port. Second
The oil supply pipe, a first replenishment pipe whose one end side is a suction part connected to an external oil tank, and the other end side is connected to the dual-use pipe via the first switching valve, and one end side is connected via the second switching valve. A second supply pipe connected to the dual-purpose pipe and having the other end connected to the oil storage tank; a pump provided in the middle of the dual-purpose pipe; and a flow meter for measuring the flow rate of the oil liquid supplied from the discharge port. , The first and second switching valves are switched and controlled so that the first oil supply pipe is connected to the second oil supply pipe via the dual purpose pipe, and the pump is drive-controlled to control the oil liquid in the oil storage tank. Refueling control means for refueling from the discharge port,
The first and second switching valves are switch-controlled and the pump is drive-controlled to store the oil liquid from the oil tank so that the first supply pipe is connected to the second supply pipe via the dual-use pipe. A replenishment control means for replenishing the inside of the tank and a switching control of the first and second switching valves and a drive control of the pump so that the first refueling pipe is connected to the second refueling pipe through the dual-use pipe. Then, a configuration including a circulation control means for circulating the oil liquid in the oil storage tank in the first oil supply pipe, the dual-use pipe, and the second replenishment pipe is adopted.

According to the second aspect of the invention, one end side is connected to a plurality of oil storage tanks for respectively storing oil liquid,
A plurality of first oil supply pipes whose other ends are respectively connected to a plurality of first switching valves; one end side is connected to each of the first oil supply pipes via each first switching valve; and the other end is a plurality of second switching pipes A plurality of combined pipes each connected to the valve, and a plurality of second oil supply pipes having one end connected to each combined pipe through each second switching valve and the other end connected to an oil liquid discharge port, respectively. , In order to replenish the oil liquid from the outside into each of the oil storage tanks, one end side is selectively connected to one of the oil tanks, and the other end side is connected to the third switching valve. A pipe, a plurality of first replenishment pipes, one end of which is connected to the suction pipe through at least a third switching valve, and the other end of which is connected to the dual-purpose pipes through respective first switching valves; It is connected to each dual-purpose pipe via each second switching valve, and the other end is connected to each oil storage tank. A plurality of second replenishment pipes connected to the cylinder, a plurality of pumps provided in the middle of the dual-purpose pipes, and a plurality of flow meters for measuring the flow rate of the oil liquid supplied from the discharge ports. , Each of the first switching valves selectively connects one end of each of the dual-purpose pipes to each of the first oil supply pipe and each of the first replenishing pipes, and each of the second switching valves of the other end of each dual-use pipe. Is selectively switched and connected to each of the second oil supply pipes and each of the second supply pipes, and the other end of the suction pipe is switched and connected to any of the first supply pipes by the third switching valve. The following configuration is adopted.

[0022]

With the above construction, according to the first aspect of the invention, even if air remains in the dual-purpose pipe when the oil liquid in the oil tank is replenished into the oil storage tank by the replenishment control means, the refueling control means is used thereafter. If the circulation liquid is circulated in the first oil supply pipe, the combined pipe and the second replenishment pipe by the circulation control means before the oil liquid in the oil storage tank is supplied, the circulating oil at this time is circulated. Thus, the air in the dual-purpose pipe can be reliably discharged, and the refilling of the oil liquid from the discharge port can be started while the first and second oil supply pipes and the dual-purpose pipe are filled with the oil liquid.

Further, in the invention of claim 2, when supplying any one of the plurality of types of oil liquids, any one of the plurality of first and second changeover valves is provided. Two switching valves are switched to connect one end side of the corresponding dual-use pipe to the first oil supply pipe and connect the other end side of the dual-use pipe to the corresponding second oil supply pipe. By driving the pump, the oil liquid in the corresponding oil storage tank can be easily refilled from the discharge port to the refueling target, and the refueling amount of the oil liquid at this time can be measured by the flow meter.

When replenishing any one of the oil liquids, one end of the suction pipe is connected to one of the plurality of oil tanks, and the other end of the suction pipe is connected to each of the plurality of oil tanks by the third switching valve. If the first and second switching valves are respectively switched in response to the switching connection to one of the first supplementary pipes, the first supplementary pipe is connected to the second supplementary pipe via the corresponding dual-purpose pipe.
It can be connected to a replenishing pipe, and by driving a pump provided in the middle of this combined pipe, oil liquid can be easily replenished from the external oil tank into the corresponding oil storage tank.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 7 by taking an oil exchanger as an example of an oil supply device.

In the figure, 1A, 1B and 1C represent oil storage tanks, and oil liquids A, B and C, which are different grades of oil, are stored in the oil storage tanks 1A, 1B and 1C, for example, as oil grades. The oil liquid A is of SH class, the oil liquid B is of SG class, and the oil liquid C is of SF class.

One end of 2A, 2B and 2C is an oil storage tank 1
First oil supply pipes connected to A, 1B, 1C, 3A, 3
Reference characters B and 3C denote first switching valves connected to the other ends of the oil supply pipes 2A, 2B and 2C, and the switching valves 3A, 3B and 3C are electromagnetic three-way switching valves, and two flow valves are provided. It has an inlet and an outlet. Then, the switching valve 3A,
One of the inlets of 3B and 3C is oil supply pipe 2A, 2B, 2C
While being connected to the other end side, the other inflow port is connected to replenishment pipes 14A, 14B and 14C described later, and the outflow port is connected to dual purpose pipes 4A, 4B and 4C described later.

Here, the changeover valves 3A, 3B, 3C are controlled to be changed over by a changeover signal from a control device 23, which will be described later. For example, the changeover valve 3A is either the oil supply pipe 2A on the inlet side or the supply pipe 14A. One of the dual-purpose pipes 4
Switch to A. Similarly, for the switching valve 3B (3C), either one of the oil supply pipe 2B (2C) and the replenishment pipe 14B (14C) on the inlet side is selectively switched to the dual-use pipe 4B (4C). Connecting.

One end side of 4A, 4B and 4C is connected to the first oil supply pipes 2A, 2B and 2C via the first switching valves 3A, 3B and 3C, and 5A, 5B and 5C are connected pipes 4A and 4C. 4B, 4C shows a second switching valve connected to the other end side, and the switching valves 5A, 5B, 5C are constituted by electromagnetic three-way switching valves and have one inflow port and two outflow ports. Have The changeover valves 5A, 5B, 5C are connected at their inflow ports to the other ends of the dual-purpose pipes 4A, 4B, 4C, and one of the outflow ports is connected to the oil supply pipes 6A, 6B, 6C, which will be described later, and the other. Is connected to replenishment pipes 15A, 15B, 15C described later.

Here, the switching valves 5A, 5B, 5C are switched and controlled by a switching signal from the control device 23. For example, the switching valve 5A has a dual pipe 4A on the inlet side, an oil supply pipe 6A on the outlet side, and a replenishment pipe. One of 15A is selectively switched and connected. Similarly, for the switching valve 5B (5C), the dual pipe 4B (4C) on the inlet side is replaced with the oil supply pipe 6B (6C) on the outlet side and the replenishment pipe 15B (15).
One of C) is selectively switched and connected.

One end side of 6A, 6B, and 6C is a dual-purpose pipe 4
The 2nd oil supply piping connected to A, 4B, 4C via the 2nd switching valve 5A, 5B, 5C is shown, and these oil supply piping 6A, 6
B and 6C are refueling nozzles 7 with the other end serving as a discharge port for oil liquid
It is connected to A, 7B, and 7C. The refueling nozzle 7A refills the engine (oil pan) of the vehicle as a refueling target with the oil liquid A (for example, SH-class oil) in the oil storage tank 1A, and the refueling nozzle 7B functions as another refueling target. The oil liquid B (for example, SG grade oil) in the oil storage tank 1B is supplied into the engine (oil pan) of the vehicle. Further, the refueling nozzle 7C refuels the engine (oil pan) of the vehicle as another refueling target with the oil liquid C (for example, SF class oil) in the oil storage tank 1C.

8A, 8B, 8C are oil storage tanks 1A, 1
An oil tank provided outside the oil exchanger for supplying oil liquids A, B, and C to B and 1C is shown.
B and 8C are made up of can bodies such as drums and cans filled with engine oil (or tanks of tank trucks that transport oil liquids A, B and C), and oil tanks 8A and 8B. , 8C store oil liquids A, B, and C, respectively.

Reference numeral 9 denotes one suction pipe commonly used for replenishing the oil liquids A, B and C from the oil tanks 8A, 8B and 8C into the oil storage tanks 1A, 1B and 1C, respectively. Is provided with an oil strainer 10 on one end side, for example, an oil tank 8
When the oil liquid A in A is replenished to the oil storage tank 1A, the oil strainer 10 sinks into the oil liquid A as shown by the phantom line in FIG. 1 in order to connect one end side of the suction pipe 9 to the oil tank 8A. To be pickled. Further, when the oil liquid B (C) in the oil tank 8B (8C) is replenished to the oil storage tank 1B (1C), the oil strainer 10 is connected to the oil tank 8B (8C) in order to connect one end side of the suction pipe 9 to the oil tank 8B (8C). It is submerged in the liquid B (C). And
The suction pipe 9 is provided with the switching valves 11 and 12 described later together with the replenishment pipe 1.
A suction part of 4A, 14B, 14C is comprised.

Reference numerals 11 and 12 denote third switching valves connected to the other end side of the suction pipe 9. The switching valves 11 and 12 are also electromagnetic three-way switching valves, each having one inlet and two inlets.
And an individual outlet. The switching valve 11 has an inflow port connected to the other end of the suction pipe 9, one of the outflow ports connected to the supply pipe 14A, and the other to the inflow port of the switching valve 12 via the branch pipe 13. It is connected. Further, one of the outlets of the switching valve 12 has one outlet
4B, and the other outlet is connected to the supply pipe 14C.

Here, the switching valves 11 and 12 are the control device 2
Switching control is performed by a switching signal from the oil tank 3 and, for example, the oil tank 8
When the oil liquid A in A is supplied to the oil storage tank 1A, the other end of the suction pipe 9 is switched and connected to the supply pipe 14A by the switching valve 11. Further, the oil liquid B (C) in the oil tank 8B (8C)
When replenishing the oil storage tank 1B (1C), the other end side of the suction pipe 9 is switched and connected to one end side of the branch pipe 13 by the switching valve 11, and the other end side of the branch pipe 13 is replenished by the switching valve 12. Either one of the pipes 14B and 14C is selectively switched and connected.

14A, 14B and 14C are oil storage tanks 1
A first replenishment pipe for replenishing the oil liquids A, B, C from the outside is shown in A, 1B, 1C, and the replenishment pipes 14A, 14 are shown.
The switching valves 11, 12 and the suction pipe 9 are provided on one end side of B, 14C.
Is selectively connected to any of the oil tanks 8A, 8B, and 8C via the like, and the suction pipe 9 and the switching valves 11 and 12 constitute an oil liquid suction portion. Also, the supply pipe 1
The other end side of 4A, 14B, 14C has the first switching valve 3A,
It is adapted to be connected to the dual-purpose pipes 4A, 4B, 4C via 3B, 3C.

Reference numerals 15A, 15B and 15C denote second replenishment pipes, and one end side of the replenishment pipes 15A, 15B and 15C is a dual-use pipe 4A via the second switching valves 5A, 5B and 5C.
4B, 4C, the other end side is the oil storage tank 1A, 1
B, 1C are connected to supply oil liquids A, B, C into the oil storage tanks 1A, 1B, 1C, respectively.

16A, 16B and 16C are dual-purpose pipes 4A,
Pumps provided in the middle of 4B and 4C are shown. Each of the pumps 16A, 16B and 16C has a motor (not shown) as a drive source, and is driven and stopped by a control signal from the control device 23. Then, the pumps 16A, 16
B and 16C respectively pump oil liquids A, B and C from one end to the other end of dual-purpose pipes 4A, 4B and 4C during refueling, replenishment or circulation described later. To supply.

Relief valves (not shown) are attached to the pumps 16A, 16B, and 16C, respectively, and the pump 16 can be used when the fuel nozzles 7A, 7B, and 7C are closed, for example.
When A, 16B and 16C are driven and an excess pressure exceeding the relief set pressure is generated, this relief valve opens to circulate the oil liquids A, B and C before and after the pumps 16A, 16B and 16C. Will continue to do.

Reference numerals 17A, 17B and 17C denote flow meters,
The flowmeters 17A, 17B, 17C are pumps 16A, 16
B, 16C and the second switching valves 5A, 5B, 5C are provided in the middle of the dual-purpose pipes 4A, 4B, 4C, respectively. The flowmeters 17A, 17B and 17C measure the flow rates of the oil liquids A, B and C which are pumped and supplied from one end side of the dual purpose pipes 4A, 4B and 4C to the other end side by the pumps 16A, 16B and 16C, respectively. It is measured as a refueling amount Qk described later.

18A, 18B and 18C are oil storage tanks 1
The remaining amount sensors of the oil liquids A, B, C provided in A, 1B, 1C are shown, and the remaining amount sensors 18A, 18B, 18C are
For example, it is constituted by a liquid level sensor or the like for detecting the liquid level of the oil liquids A, B, C, and detects the remaining amount of the oil liquids A, B, C stored in the oil storage tanks 1A, 1B, 1C, and the detection thereof. The signal is output to the control device 23.

Next, reference numeral 19 in FIG. 2 indicates a preset switch. The preset switch 19 is manually operated by an operator, and when the oil liquids A, B and C are supplied using the oil supply nozzles 7A, 7B and 7C. , The desired refueling amount is, for example, a designated refueling amount Qks such as "20 l (liter)"
Set as. Also, the supply pipes 14A, 14B, 14
The oil liquid A, 1B, 1C in the oil storage tanks 1A, 1B, 1C
When replenishing B and C, the desired replenishment amount is set with the preset switch 19, for example, "20 l (liter)".
Set as the specified supply amount Qhs of the above.

Further, the preset switch 19 is used in addition to the designated oil supply amount Qks and the designated replenishment amount Qhs when the operator performs the designation operation as described above.
The tank capacity Q of A, 1B and 1C can be set.

Reference numeral 20 denotes a keyboard which is manually operated by an operator. The keyboard 20 is used, for example, from the oil tank 8A to the oil storage tank 1A when the operator replenishes the oil liquid.
When replenishing the oil liquid A, the "oil liquid A: replenishment" key (not shown) provided on the keyboard 20 is pressed to perform the setting operation. When refueling the oil liquid, for example, when replenishing the oil liquid A from the oil storage tank 1A to the oil pan of the engine, the operator presses the "oil liquid A: refueling" key (not shown) provided on the keyboard 20. Press to perform the setting operation.

Here, the "oil liquid A:
When "replenishment" is set, the control device 23 outputs a replenishment switching signal corresponding to the oil liquid A (liquid type) at this time to the first switching valve 3A, the second switching valve 5A, and the third switching valve 11. Then, the switching valves 3A, 5A, 11 are switching-controlled in the replenishment switching procedure based on the switching number "2-1" shown in FIG.
Then, in this case, the suction pipe 9 is switch-connected to the first supply pipe 14A through the switching valve 11, and the supply pipe 14A is connected.
Is connected to the dual-purpose pipe 4A via the switching valve 3A, and the dual-purpose pipe 4A is connected to the second supply pipe 15A via the switching valve 5A, whereby the oil tank 8A is communicated with the oil storage tank 1A. .

When "oil liquid B: replenishment"("oil liquid C: replenishment") is set by the keyboard 20,
The control device 23 sends a replenishment switching signal corresponding to the oil liquid B (oil liquid C) at this time to the first switching valve 3B (3C) and the second switching valve 5B.
(5C) and the third switching valves 11 and 12, and the switching valves 3B and 5B (3C and 5C) and the switching valves 11 and 12 have switching numbers "2-2"("2-3") shown in FIG. ), The switching control is performed in the replenishment switching procedure. Then, in this case, the suction pipe 9 is switch-connected to the first supply pipe 14B (14C) via the switching valves 11 and 12, and the supply pipe 14B is connected.
(14C) is a dual-purpose pipe 4B via the switching valve 3B (3C).
(4C) is switched and connected, and the dual-purpose pipe 4B (4
C) is the second supply pipe 15B via the switching valve 5B (5C).
(15C) is switched and connected, whereby the oil tank 8B (8C
C) is selectively communicated with the oil storage tank 1B (1C).

On the other hand, when "oil liquid A: refueling" is set by the keyboard 20, the control device 23 first responds to the oil liquid A (liquid type) at this time as in the program shown in FIG. An internal circulation switching signal is output to the switching valves 3A and 5A, and the switching valves 3A and 5A have switching numbers "3-" shown in FIG.
Switching control is performed by the internal circulation switching procedure based on "1". Then, in this case, the first oil supply pipe 2A is switch-connected to the dual-use pipe 4A via the switching valve 3A, and the dual-use pipe 4A is switch-connected to the second supply pipe 15A via the switching valve 5A. By driving the pump 16A, the oil liquid A in the oil storage tank 1A is again returned to the oil storage tank 1A via the dual-purpose pipe 4A and the like.
It becomes possible to circulate inside.

Next, the control device 23 outputs a refueling switching signal according to the oil liquid A to the switching valves 3A and 5A, and the switching valves 3A and 5A.
5A is switching-controlled in the refueling switching procedure based on the switching number "1-1" shown in FIG. And in this case, the first
The oil supply pipe 2A is switch-connected to the dual-use pipe 4A via the first switching valve 3A and the dual-use pipe 4A is connected to the second switching valve 5A.
It is switched and connected to the second oil supply pipe 6A via A.

When "oil liquid B: refueling"("oil liquid C: refueling") is set by the keyboard 20,
First, the control device 23 sends an internal circulation switching signal corresponding to the oil liquid B (oil liquid C) at this time to the switching valves 3B, 5B (3C, 5C).
And the switching valves 3B, 5B (3C, 5C) are switched and controlled by the internal circulation switching procedure based on the switching number "3-2"("3-3") shown in FIG. Then, in this case, the first oil supply pipe 2B (2C) is switch-connected to the dual-use pipe 4B (4C) via the switching valve 3B (3C), and
The dual-use pipe 4B (4C) is switch-connected to the second supply pipes 15A, 15B (15C) via the switching valve 5B (5C), and the oil storage tank 1 is driven by driving the pump 16B (16C).
The oil liquid B (C) in B (1C) can be internally circulated again to the oil storage tank 1B (1C) via the dual-use pipe 4B (4C) or the like.

Next, the control device 23 controls the oil liquid B at this time.
The oil supply switching signal corresponding to (oil liquid C) is supplied to the switching valves 3B and 5B.
(3C, 5C) to output the changeover valves 3B, 5B (3C, 5C).
5C) is the switching number "2-2"("2-3") shown in FIG.
Switching control is performed in a refueling switching procedure based on. In this case, the oil supply pipe 2B (2C) is connected to the switching valve 3B (3C
The dual-purpose pipe 4B (4C) is switched and connected via C), and the dual-purpose pipe 4B (4C) is switched and connected to the oil supply pipe 6B (6C) through the switching valve 5B (5C).

Reference numeral 21 denotes an emergency stop switch. The emergency stop switch 21 is used when, for example, the oil liquid in the oil tank 8A, 8B or 8C is exhausted while the oil liquid A, B or C is being replenished, or when the oil liquid A, When an accident occurs while refueling (replenishing) B and C, it is manually operated by an operator,
The pump 16A, 16B or 16C is brought to an emergency stop.

Reference numerals 22A, 22B and 22C denote nozzle switches attached to the oil supply nozzles 7A, 7B and 7C, respectively. The nozzle switches 22A, 22B and 22C are respectively provided with the oil supply nozzles 7A, 7B and 7C (not shown). ) Is detected and the detection signal at this time is output to the control device 23.

Further, reference numeral 23 denotes a control device constituted by a microcomputer or the like. The control device 23 has a preset switch 19, a keyboard 20,
Emergency stop switch 21, nozzle switches 22A, 22
B, 22C and flowmeters 17A, 17B, 17C, etc., and output side pumps 16A, 16B, 16C, first
Switching valves 3A, 3B, 3C, second switching valves 5A, 5B, 5
C, the third switching valves 11 and 12, the display 24 and the like are connected, and the display 24 displays the oil supply amount of the oil liquids A, B and C and the like. Then, the control device 23 has the memory circuit shown in FIG.
The program etc. shown in FIG. 4 are stored, and refueling control processing and replenishment control processing etc. are performed.

Further, in the memory circuit of the control device 23, the refueling switching procedure shown in FIG.
-1 ”,“ 1-2 ”or“ 1-3 ”and the refueling switching procedure shown in FIG.
Replenishment procedure map 26 set as "1", "2-2" or "2-3" and the internal circulation switching procedure "3-" shown in FIG.
The circulation procedure map 27 set as "1", "3-2", or "3-3" is stored. Here, the refueling procedure map 25 is "1-1", "1-2" or "1-3" according to the type of the oil liquid (oil liquid A, B or C) to be refueled.
By setting the above, the oil supply switching signal corresponding to this is output from the control device 23, and the first switching valves 3A, 3
B, 3C and the second switching valves 5A, 5B, 5C are controlled to be switched to the refueling side, respectively.

On the other hand, the replenishment procedure map 26 is "2-1" according to the type of the replenished oil liquid (oil liquid A, B or C),
By setting "2-2" or "2-3", a supply switching signal corresponding to this is output from the control device 23, and the switching valves 3A, 3B, 3C and the switching valves 5A, 5 are output.
B and 5C are controlled to be switched to the replenishment side, respectively, and the changeover valves 11 and 12 connect the suction pipe 9 to the replenishment pipes 14A and 14
Switching control is performed to either B or 14C. Further, the circulation procedure map 27 is "3-1", "3-2" or "3-3" depending on the type of oil liquid to be supplied (oil liquid A, B or C).
By setting the above setting, the internal circulation switching signal corresponding to this is output from the control device 23, and the switching valves 3A, 3
B, 3C and switching valves 5A, 5B, 5C are controlled to be switched to the internal circulation side, respectively.

Further, in the storage circuit of the control device 23, the replenishable amount Q0 (oil storage tank 1A, 1A, 1B, 1C) when the oil liquids A, B, C are replenished in the storage area 23A. 1B and 1C tank capacity Q to oil liquid A,
(Obtained by subtracting the remaining amounts of B and C) and the like are stored updatable.

The oil exchanger according to the present embodiment has the above-mentioned structure. Next, the replenishment control process, the internal circulation control process and the oil supply control process by the control device 23 will be described with reference to FIGS. 3 and 4.

That is, in the replenishment control process shown in FIG. 3, first, in step 1, the operator selects "oil liquid A: replenishment" from the keyboard 20 to replenish the oil liquid A from the oil tank 8A to the oil storage tank 1A. In order to connect one end side of the suction pipe 9 to the oil tank 8A, the oil strainer 10 is immersed in the oil liquid A as shown by the phantom line in FIG. And
In step 2, the switching number "2" in the supply switching procedure shown in FIG.
-1 "based on the replenishment switching signal, the third switching valve 11 switches and connects the other end side of the suction pipe 9 to the first replenishment pipe 14A, and the replenishment pipe 14A is also connected to the first replenishment valve 3A by the dual pipe 4A. And connect the dual-purpose pipe 4A to the second
The second supply pipe 15A is switched and connected through the switching valve 5A, and the oil tank 8A is communicated with the oil storage tank 1A through the suction pipe 9, the switching valve 11, the switching valve 3A, the pump 16A, the flow meter 17A and the switching valve 5A. .

Next, in step 3, the pump 16A is driven so that the oil liquid A in the oil tank 8A is pressure-fed into the oil storage tank 1A through the replenishment pipes 14A, 15A and the like, and the inside of the oil storage tank 1A is driven. Replenishment of the oil liquid A to the Then, in step 4, the replenishable amount Q0 of the oil liquid A stored in the oil storage tank 1A is measured by the remaining amount sensor 18
Read from A.

Next, at step 5, is the oil liquid A stored in the oil storage tank 1A based on the replenishable amount Q0 of the oil liquid A read from the remaining amount sensor 18A, for example, "full tank" state? It is determined whether or not, that is, whether or not the replenishment amount at this time becomes a value corresponding to the replenishable amount Q0, and "YES"
When it is determined that the oil liquid A is being replenished in the oil storage tank 1A until the oil tank A becomes “full”, the process proceeds to step 6 and the suction pipe 9 is put together with the oil strainer 10 in the oil tank 8A.
Pull out from the Then, in step 7, it is determined whether or not a predetermined time has elapsed. When it is determined to be "YES", the process proceeds to step 8 to stop the pump 16A and terminate the processing operation.

In this case, in steps 6 and 7, the pump 16A is driven for a predetermined time (for example, about 5 to 10 seconds) while the suction pipe 9 is pulled out together with the oil strainer 10 from the oil tank 8A. By continuing the operation, air (outside air) is sucked into at least the suction pipe 9 and the switching valve 11, and the oil liquid A from the oil tank 8A is prevented from remaining in the suction pipe 9, the oil strainer 10 and the switching valve 11. To do so.

It should be noted that the "full tank" state in step 5 is assumed to be the case where the replenishment amount becomes the value corresponding to the replenishable amount Q0, but at the time of replenishment, the preset switch 19 sets the designated replenishment amount Qhs. At times, the "full" state is a case where the supply amount becomes a value corresponding to the specified supply amount Qhs.

When it is determined to be "NO" in step 5, the process proceeds to step 9 and the emergency stop switch 21
It is determined whether or not has been operated, and when it is determined to be "NO", the process returns to step 3 and the subsequent processes are repeated.
Then, when it is determined “YES” in step 9,
For example, when the operator manually operates the emergency stop switch 21 due to the reason that the remaining amount in the oil tank 8A is exhausted during the replenishment of the oil liquid A, the process proceeds to step 8 and the pump 16A is emergency stopped, and the processing is performed. Try to finish the operation.

When the operator selects "oil liquid B: replenishment" with the keyboard 20 in step 1, the switching number "2-" in the replenishment procedure map 26 shown in FIG. 6 is selected.
Based on the replenishment switching procedure according to "2", the other end side of the suction pipe 9 is switch-connected to one end side of the branch pipe 13 via the third switching valve 11, and the other end side of the branch pipe 13 is the switch valve 12.
Is connected to the first supply pipe 14B via the switch, the first supply pipe 14B is connected to the dual-use pipe 4B via the first switch valve 3B, and the dual-use pipe 4B connects the second switch valve 5B. Is switched and connected to the second supply pipe 15B via
As a result, the oil tank 8B has a suction pipe 9 and switching valves 11, 12, 3
B, the pump 16B, the flow meter 17B and the switching valve 5B communicate with the oil storage tank 1B.

When "oil C: replenishment" is selected, the other end side of the suction pipe 9 is the third switching valve 1 based on the replenishment switching procedure according to the switching number "2-3" on the replenishment procedure map 26.
1 is connected to one end side of the branch pipe 13 via the switching valve 12, and the other end side of the branch pipe 13 is connected to the first side via the switching valve 12.
The first supply pipe 14C is switch-connected to the supply pipe 14C, the first supply pipe 14C is connected to the dual-use pipe 4C via the first switching valve 3C, and the dual-use pipe 4C is connected to the second supply valve 5C via the second supply valve 5C. The oil tank 8C is connected to the oil storage tank 1C via the suction pipe 9, the switching valve 3C, the pump 16C, the flow meter 17C, and the switching valve 5C. Also in this case, the remaining amount sensor 18
B and 18C detect the remaining amount of the oil liquids B and C stored in the oil storage tanks 1B and 1C, and based on this, the replenishable amount Q0
Is calculated.

Next, in the refueling control process (internal circulation control process) shown in FIG. 4, first, when the operator selects "oil liquid A: refueling" with the keyboard 20 in step 11, the process proceeds to step 12. Based on the internal circulation switching signal by the switching number "3-1" in the internal circulation switching procedure shown in FIG. 7, the first oil supply pipe 2A is switched and connected to the dual-use pipe 4A via the first switching valve 3A, and the dual-use pipe 4A is also used. The pipe 4A is switched and connected to the second replenishment pipe 15A through the second switching valve 5A, and the oil storage tank 1A is connected between the refueling pipe 2A and the replenishment pipe 15A through the switching valve 3A, the pump 16A, the flow meter 17A and the switching valve 5A. To communicate with.

Next, in step 13, the pump 16A is driven, and the process proceeds to step 14 for a predetermined time (for example, 5 to 10).
It is determined whether or not (approx. Seconds) has elapsed, the pump 16A is continuously driven until it is determined to be "YES", and the pump 16A is stopped in step 15. As a result, the oil storage tank 1A
The oil liquid A therein is internally circulated again into the oil storage tank 1A through the oil supply pipe 2A, the dual-use pipe 4A, the replenishment pipe 15A, etc., and the dual-use pipe 4A is processed by the processing in steps 6 to 8 of FIG. 3 during the replenishment control, for example. And the air that has entered the supply pipe 15A is discharged to the outside from the dual-use pipe 4A and the like through the oil storage tank 1A by the internal circulation of the oil liquid A at this time. During this period, the measurement of the amount of oil supplied by the flow meter 17A is suspended.

Next, at step 16, the first oil supply pipe 2A is switched and connected to the dual-use pipe 4A via the first switching valve 3A based on the oil supply switching signal by the switching number "1-1" of the oil supply switching procedure. The combined pipe 4A is connected to the second switching valve 5A.
The oil storage tank 1A is connected to the oil supply nozzle 7A via the switching valve 3A, the pump 16A, the flow meter 17A and the switching valve 5A.

Next, at step 17, for example, when the oil supply nozzle 7A is removed from the nozzle hook, the pump 16A is driven based on the detection signal from the nozzle switch 22A, whereby the oil liquid A in the oil storage tank 1A is driven. (Eg S
(H-class oil) is supplied from the oil supply nozzle 7A through the oil supply pipes 2A, 6A and the like into the engine (oil pan) of the vehicle which is the object of oil supply. And step 18
Then, the refueling amount Qk at this time is measured by the flow meter 17A, and the refueling amount is displayed on the display 24.

Next, in step 19, it is determined whether or not the amount of oil supply Qk at this time has reached the specified amount of oil supply Qks set by the preset switch 19 or the like (or based on the detection signal from the nozzle switch 22A, the oil supply nozzle). 7A is hung on the nozzle to determine whether or not the specified amount has been reached, and when the result is "NO", the flow meter 12
Since the refueling amount Qk measured in A has not reached the refueling specified amount Qks, the process returns to the step 17 and the subsequent processes are repeated.

When it is judged "YES" in step 19, the refueling amount Qk measured by the flow meter 12A is the refueling amount corresponding to the refueling specified amount Qks.
In order to stop the refueling of the oil liquid A from the refueling nozzle 7A,
Moving to step 20, the pump 16A is stopped and the processing operation is ended.

When the operator selects "oil liquid B: refueling" with the keyboard 20 in the step 11, the internal number by the switching number "3-2" of the circulation procedure map 27 shown in FIG. Based on the circulation switching procedure,
The first oil supply pipe 2B is also used as the dual pipe 4 via the first switching valve 3B.
In addition to being switched and connected to B, the combined pipe 4B is also switched and connected to the second replenishment pipe 15B via the second switching valve 5B, and the oil storage tank 1B is connected to the switching valve 3B, the pump 16B, and the flow meter 17.
B and replenishment pipe 1 via B and switching valve 5B
Connect between 5B.

When refueling the oil liquid B in step 16, the first refueling pipe 2B is set to the first refueling piping 2B based on the refueling switching procedure according to the switching number "1-2" in the refueling procedure map 25 shown in FIG. The dual-purpose pipe 4B is switched and connected via the switching valve 3B, and the dual-purpose pipe 4B is switched and connected to the second oil supply pipe 6B through the second switching valve 5B, so that the oil storage tank 1B.
Is communicated with the oil supply nozzle 7B through the switching valve 3B, the pump 16B, the flow meter 17B and the switching valve 5B.

If the operator selects "oil C: oil supply" with the keyboard 20 in step 11,
At step 12, the first oil supply pipe 2C is switched and connected to the dual-use pipe 4C via the first switching valve 3C based on the internal circulation switching procedure by the switching number "3-3" of the circulation procedure map 27 shown in FIG. , The dual-use pipe 4C is the second switching valve 5C.
The oil storage tank 1C is connected to the second refueling pipe 15C via the switching valve 3C, the pump 16C, the flow meter 17C and the switching valve 5C so as to communicate with the second refueling pipe 15C.

When refueling the oil liquid C in step 16, the first refueling pipe 2C is switched to the first refueling line based on the refueling switching procedure by the switching number "1-3" in the refueling procedure map 25 shown in FIG. The dual-purpose pipe 4C is switch-connected via the valve 3C, the dual-purpose pipe 4C is switch-connected via the second switching valve 5C to the second oil supply pipe 6C, and the oil storage tank 1C is connected to the switching valve 3C, the pump 16C, and the flow rate. It communicates with the oil supply nozzle 7C via the total 17C and the switching valve 5C.

Thus, according to this embodiment, the first switching valve 3
A, 3B, 3C are used to connect one end side of the dual-purpose pipes 4A, 4B, 4C to the first oil supply pipes 2A, 2B, 2C and the first replenishment pipe 14
A, 14B and 14C are selectively switched and connected,
The second switching valves 5A, 5B, 5C allow the dual-purpose pipes 4A, 4
The other end of B, 4C is selectively switched and connected to the second oil supply pipes 6A, 6B, 6C and the second replenishment pipes 15A, 15B, 15C, and the suction pipe 9 is connected when replenishing the oil liquids A, B, C. By the third switching valves 11 and 12, the first supply pipes 14A, 14B and 14
Since it is configured to selectively switch connection to any of C,
The case where the oil liquids A, B, C in the oil storage tanks 1A, 1B, 1C are supplied from the oil supply nozzles 7A, 7B, 7C and the oil tank 8A,
The oil liquids A, B, C in 8B, 8C are stored in the oil storage tanks 1A, 1
In case of replenishing into B and 1C, dual-purpose piping 4A,
4B and 4C can be utilized, and the total number of pipes can be surely reduced.

Further, pumps 16A, 16B, 16C and a flow meter 17 are provided in the middle of the dual-use pipes 4A, 4B, 4C, respectively.
Since A, 17B, and 17C are provided, the oil liquids A, B, and
Pumps 16A, 16B, 16C for refueling and refueling C
When the oil liquids A, B, and C are supplied, the amount of oil supply Qk at this time can be reliably measured by the flowmeters 17A, 17B, and 17C.

Further, when the oil liquid A, B or C in the oil tank 8A, 8B or 8C is replenished in the oil storage tank 1A, 1B or 1C, the single suction pipe 9 is also used in each case. Therefore, the number of suction pipes 9 extending from the oil exchanger to the outside can be reduced to one and the appearance can be improved.

Furthermore, for example, when replenishing the oil liquid A, the oil strainer 10 is connected to the oil tank 8A by connecting one end of the suction pipe 9 to the oil liquid A as shown by a phantom line in FIG.
After submerging the oil liquid A, the suction pipe 9 together with the oil strainer 10 is pulled out from the oil tank 8A so that the pump 16A is driven for a predetermined time of, for example, 5 to 10 seconds. Continuing, since air (outside air) is sucked into at least the suction pipe 9 and the switching valve 11, the suction pipe 9, the oil strainer 10, and the switching valve 1
It is possible to prevent the oil liquid A from the oil tank 8A from adhering and remaining inside the oil tank 1, and when the oil liquid B (C) is replenished after that, the oil liquid A in the suction pipe 9 and the switching valve 11 becomes oily. It is possible to reliably prevent the liquid B (C) from being mixed.

The air at this time is, for example, the dual-purpose pipe 4
Even if it enters A and the replenishment pipe 15A, prior to refueling the oil liquid A from the refueling nozzle 7A, the oil liquid A in the oil storage tank 1A is passed through the refueling pipe 2A, the dual-use pipe 4A, the replenishment pipe 15A, and the like. Since the oil is circulated again into the oil storage tank 1A, for example, the dual-purpose pipe 4A
Also, the air that has entered the supply pipe 15A can be reliably discharged to the outside by the internal circulation of the oil liquid A at this time, and at the time of the actual oil supply, the oil supply amount Qk of the oil liquid A (B, C) is measured by the flowmeter 17A (17B , 17C) for accurate measurement.

Therefore, in this embodiment, the oil storage tank 1A
When air (A, B, C) is replenished in (1B, 1C), even if air remains in the dual-use pipe 4A (4B, 4C), etc. The internal circulation control process is performed prior to refueling, and the oil liquid A in the oil storage tank 1A is
(B, C) are oil supply pipes 2A (2B, 2C), dual-use pipe 4
Since the internal circulation is again made into the oil storage tank 1A via A (4B, 4C) and the like, the dual-use pipe 4A (4B,
The air remaining in 4C) can be reliably discharged to the outside before refueling, and the measurement error due to the inclusion of air in the refueling amount Qk of the oil liquid A (B, C) measured by the flowmeter 17A (17B, 17C) during refueling. Can be reliably prevented.

Also, the same pump 16A (16B, 16C) can be used for both refueling and replenishment of the oil liquid A (B, C), reducing the number of parts and improving workability and maintenance during assembly. In addition to greatly improving the property, even when the oil liquids A (B, C) are alternately replenished or refueled, these oil liquids A (B, C) are sure to mix with each other. Therefore, various effects such as the prevention of air leakage, the appropriate countermeasure against air intrusion into the pipe, and the enhancement of reliability can be achieved.

Note that, in the above embodiment, among the programs shown in FIG. 3 and FIG. 4, the processing from step 1 to step 9 shows a concrete example of the replenishment control means which is a constituent of the present invention, and step 12 ~ The process of step 15 shows a specific example of the circulation control means, and step 16 ~
The processing over step 20 shows a specific example of the refueling control means.

In the above embodiment, the oil supply pipes 6A, 6
Refueling nozzles 7A, 7B, 7 are provided on the tip side of B, 6C, respectively.
Although it has been described that the C is provided, instead of this, for example, as in the modification shown in FIG. 8, the oil supply nozzle as a discharge port having the check valves 31A, 31B, 31C on the tip side of the oil supply pipes 6A, 6B, 6C. 32 may be provided. And in this case, the oil supply pipes 6A, 6B, 6C
Oil liquids A, B, C such as engine oil supplied via any of the above can be supplied from a single oil supply nozzle 32.

Furthermore, in the above-mentioned embodiment, an oil exchanger was taken as an example of the oil supply device, but the present invention is not limited to this, and for example a vehicle oil supply for supplying an oil liquid such as gasoline to a vehicle fuel tank or the like. It may be applied to a lorry vehicle used for refueling work of a weighing machine or kerosene.

Furthermore, the present invention can also be applied to a large-scale oil supply device installed in a petroleum stockpiling base or the like. In this case, from a large oil storage tank provided in the petroleum stockpiling base via an oil supply pipe or the like. When shipping an oil liquid such as gasoline or replenishing the oil liquid in the oil storage tank from a tanker or the like, the pump can also be used, and the total number of parts can be greatly reduced.

On the other hand, in the above embodiment, the dual-purpose pipes 4A, 4
Although the flowmeters 17A, 17B and 17C have been described as being provided in the middle of B and 4C, instead of this, for example, the flowmeters may be provided in the middle of the second oil supply pipes 6A, 6B and 6C as shown by phantom lines in FIG. 41A, 41B, 41C may be provided, and these flowmeters 41A, 41B, 41C may be the same as the flowmeters 17A, 17B, 17C.

In the above embodiment, three types of oil liquid A are used.
Although the case of supplying or replenishing (B, C) has been described as an example, the present invention is not limited to this, and for example, one type of oil liquid,
It can also be applied to the case of supplying or replenishing two types of oil liquids or four or more types of oil liquids.

Further, in the above-mentioned embodiment, the internal recirculation control process is performed in steps 11 to 15 based on the program shown in FIG. 4, and then the refueling control process is performed in steps 16 to 20. Alternatively, the internal circulation control process of steps 11 to 15 may be performed after step 8 shown in FIG. 3, and the internal circulation control process may be performed at the end of the supply control process. Then, in this case, only the processing from step 16 to step 20 is performed in the refueling control processing shown in FIG.
The internal circulation control process from step 11 to step 15 can be omitted.

Furthermore, "F = 1" is set in the storage area 23A composed of the RAM of the control device 23 when the oil replenishment control process is completed, and "F =" when the internal circulation control process is completed. A replenishment completion flag F, which is stored so as to be updatable as "0", may be provided. Then, in this case, the pump 16A (16
B, 16C), the replenishment completion flag F is set to “F = 1”, and in step 11 shown in FIG. 4, “oil liquid A:
After setting "refueling"("oil liquid B: refueling" or "oil liquid C: refueling"), it is determined whether or not the replenishment completion flag F is "F = 1", and when "YES" is determined. When the process after step 12 is performed and it is determined to be "NO" and the replenishment completion flag F is "F = 0", the process proceeds to step 16 and the subsequent processes are performed, and the internal circulation control process ends at step 15. If so, the supply completion flag F may be stored as "F = 0" before proceeding to step 16. As a result, the internal circulation control process is automatically performed prior to refueling only at the time of refueling after replenishment of the oil liquid, and at the time of refueling other than this, the internal circulation is not performed immediately and the step 16 is immediately performed.
Subsequent refueling control processing can be performed.

In the above embodiment, the oil storage tank 1A,
Remaining amount sensors 18A, 18B, 18C provided in 1B, 1C
Has been described as being configured by a liquid level sensor or the like that detects the liquid level of the oil liquids A, B, and C, but instead of this, for example, a float switch or the like may be used.

[0092]

As described in detail above, according to the invention of claim 1, the first and second switching valves are switched so that the first oil supply pipe is connected to the second oil supply pipe via the dual-use pipe. Control and
In order to connect the first replenishment pipe to the second replenishment pipe via the combined pipe, the refueling control means for driving and controlling the pump to replenish the oil liquid in the oil storage tank from the discharge port, Replenishment control means for reversing and controlling the switching valve and drivingly controlling the pump to replenish the oil liquid from the oil tank into the oil storage tank;
The first and second switching valves are switch-controlled so that the first oil supply pipe is connected to the second replenishment pipe via the dual-use pipe, and the pump is drive-controlled to remove the oil liquid in the oil storage tank. Since the first oil supply pipe, the dual-use pipe, and the circulation control means for circulating the second supply pipe are provided, the dual-use pipe is used when the oil liquid in the oil tank is replenished into the oil storage tank by the replenishment control means. Even if air remains inside, before the oil supply control means supplies the oil liquid in the oil storage tank thereafter, the circulation control means supplies the oil liquid in the oil storage tank to the first oil supply pipe, the dual-purpose pipe, and the second supply. By circulating the oil in the pipe, it is possible to eliminate the situation where air remains in the dual-purpose pipe when oil is supplied from the discharge port, and the flow meter can accurately measure the amount of oil supplied. Can improve the reliability as a lubricator That.

Further, according to the invention described in claim 2, each first oil storage tank connected to a plurality of oil storage tanks for storing different oil liquids.
Connect the oil supply pipe to each dual-use pipe via each first switching valve,
The second oil supply pipes connected to the discharge ports of the respective oil liquids are connected to the dual function pipes through the second switching valves, and the oil tanks of the respective oil tanks are replenished from the outside with the oil liquids, respectively. A suction pipe connected to any of the plurality of first replenishing pipes is switched and connected to one of the plurality of first replenishing pipes via the third switching valve, and each of the first replenishing pipes is connected to each of the dual use pipes via each of the first switching valves. The second replenishment pipe connected to each of the oil storage tanks is connected to each of the combined pipes through each of the second switching valves, a pump is provided in the middle of the combined pipe, and each of the first switching valves includes One end side of each dual-use pipe is selectively switched and connected to each of the first oil supply pipes and each of the first supply pipes, and the other end of each dual-use pipe is connected to each of the second oil supply pipes by the second switching valve. Since it is configured to selectively switch connection to each of the second replenishment pipes, a pump is provided between the oil supply pipe and the replenishment pipe. It can also be used as a pump, and the number of parts such as pumps can be reduced to greatly improve workability and maintainability during assembly.Moreover, even when replenishing or refueling multiple types of oil liquids, these oil liquids are mixed. It is possible to reliably prevent the occurrence of damage and to improve reliability, and other various effects.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an oil exchanger according to an embodiment of the present invention.

FIG. 2 is a control block diagram of the oil exchanger shown in FIG.

FIG. 3 is a flowchart showing a supply control process by a control device.

FIG. 4 is a flowchart showing an internal circulation control process and an oil supply control process by a control device.

FIG. 5 is an explanatory diagram of a refueling procedure map stored in a storage area of the control device.

FIG. 6 is an explanatory diagram of a supply procedure map stored in a storage area of the control device.

FIG. 7 is an explanatory diagram of a circulation procedure map stored in a storage area of the control device.

FIG. 8 is a partial configuration diagram showing an oil supply nozzle and the like of an oil exchanger according to a modification.

[Explanation of symbols]

1A, 1B, 1C Oil storage tank 2A, 2B, 2C 1st oil supply pipe 3A, 3B, 3C 1st switching valve 4A, 4B, 4C dual use pipe 5A, 5B, 5C 2nd switching valve 6A, 6B, 6C 2nd oil supply pipe 7A, 7B, 7C, 32 Oil supply nozzle (discharge port) 8A, 8B, 8C Oil tank 9 Suction pipe (suction part) 11, 12 Third switching valve 14A, 14B, 14C First replenishment pipe 15A, 15B, 15C Second replenishment Piping 16A, 16B, 16C Pump 17A, 17B, 17C, 41A, 41B, 41C Flowmeter 23 Controller A (B, C) Oil liquid

Claims (2)

[Claims] 1. A first oil supply pipe having one end connected to an oil storage tank for storing oil liquid and the other end connected to a first switching valve, and one end connected to the first oil supply pipe through the first switching valve. And a second oil supply pipe whose other end is connected to the second switching valve, and one end is connected to the other pipe via the second switching valve, and the other end is connected to the oil liquid discharge port. , One end serves as a suction portion connected to an external oil tank, the other end serves as a first supply pipe connected to the dual-use pipe via the first switching valve, and one end serves as a dual-use pipe via the second switching valve. A second replenishment pipe connected to the oil storage tank, the other end of which is connected to the oil storage tank; a pump provided in the middle of the combined pipe; a flow meter for measuring the flow rate of the oil liquid supplied from the discharge port; The first oil supply pipe is connected to the second oil supply pipe through the dual-purpose pipe, Switching control of the first and second switching valves,
So as to connect the first replenishment pipe to the second replenishment pipe via the dual-use pipe, and a refueling control means for driving and controlling the pump to replenish the oil liquid in the oil storage tank from the discharge port.
Replenishment control means for switching control of the first and second switching valves and driving control of the pump to replenish the oil liquid from the oil tank into the oil storage tank, and the first oil supply pipe as the second supply pipe. The first and second switching valves are switch-controlled so as to be connected via a dual-purpose pipe, and the pump is drive-controlled to supply the oil liquid in the oil storage tank to the first oil-supply pipe, the dual-use pipe, and the second replenishment. An oil supply device comprising a circulation control means for circulating the oil in a pipe. 2. A plurality of first oil supply pipes, one end side of which is connected to a plurality of oil storage tanks respectively storing oil liquids, and the other end side of which is connected to a plurality of first switching valves, respectively, and one end side of each of the first oil supply pipes. A plurality of dual-purpose pipes connected to each of the dual-purpose switching pipes and having the other end side connected to the multiple second switching valves respectively, and one end side connected to each of the dual-use pipes via each second switching valve, A plurality of second oil supply pipes each having the other end connected to the oil liquid discharge port, and one of the plurality of oil tanks having one end selected to supply the oil liquid from the outside into each of the oil storage tanks. Fluidly connected, and the other end side is connected to the third switching valve with an oil liquid suction pipe, one end side is connected to the suction pipe through at least the third switching valve, and the other end side is connected to each of the dual-purpose pipes. A plurality of first replenishment pipes connected via one switching valve and one end side of each of the above A plurality of second replenishment pipes connected to the dual-use pipes via the second switching valves and having the other end side connected to the respective oil storage tanks; a plurality of pumps respectively provided in the middle of the dual-use pipes; A plurality of flow meters for measuring the flow rate of the oil liquid supplied from each discharge port, and the one end side of each dual-purpose pipe is connected to each of the first flow valves by the first switching valve.
The oil supply pipe and each of the first supplementary pipes are selectively connected by switching, and the other end of each dual-use pipe is connected to each of the second by the second switching valve.
An oil supply device configured to selectively switch connection between an oil supply pipe and each second supply pipe, and connect the other end side of the suction pipe to any one of the first supply pipes by the third switching valve.