JPH06270997A - Oil supply unit - Google Patents

Abstract

PURPOSE:To suppress a sharp increase in the price of an oil supply unit and enhance the freedom of design by decreasing the number of oil supply nozzles through the cleaning of combined piping and oil supply nozzles, after feeding oil via. one tributary piping and combined piping, and feeding another type of oil through other tributary piping and combined piping. CONSTITUTION:By switching a supply oil type selector valve 20, this unit is designed to supply oil, for example, in a tank 3A of A system through an oil supply nozzle 25 via a combined piping 5. After oil is supplied, by switching a clean system selector valve 18 and oil cleaning selector valve 15A, the combined piping 5 and oil supply nozzle 25 are cleaned with compressed air from an air compressor 17. Then, by switching a supply oil type selector valve 20, this unit can supply oil, for example, in a tank 3B of B system through an oil supply nozzle 25 via a combined piping 5, enabling the supply of different types of oil as required. Thus, the oil supply nozzle 25 can be used to supply two types or more oil with one oil supply unit.

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, and more particularly to an oil supply device that handles a plurality of oil types.

[0002]

2. Description of the Related Art A refueling device includes a tank for storing oil liquid,
Mainly composed of a pipe connected to the tank, an oil supply nozzle provided on the opposite side to the tank connection side of the pipe, and a pump for discharging the oil liquid in the tank to the oil supply nozzle through the pipe, Conventionally, when it is possible to refuel a plurality of oil types (for example, high-octane oil, light oil, etc.), these tanks, pipes,
An oil supply nozzle and a pump are provided for each oil type.

[0003]

As described above, providing the tank, the pipe, the oil supply nozzle and the pump for each oil type causes a problem that the cost is increased and the price of the oil supply device is increased. In particular, the refueling nozzle is one of the high-priced parts, and if the refueling nozzle increases, the price of the refueling device will greatly increase. In addition, as the number of refueling nozzles increases, the degree of freedom in design also decreases.

Therefore, an object of the present invention is to reduce the number of refueling nozzles even when it is possible to refuel a plurality of oil types, so that a large increase in price can be suppressed and the degree of freedom in design is also increased. It is to provide a large refueling device.

[0005]

In order to achieve the above object, an oil supply apparatus of the present invention comprises a plurality of tanks each storing different kinds of oil liquids, and tributary pipes connected to the respective tanks. Joining pipes connected to each tributary pipe at the base end side and provided with an oil supply nozzle on the tip side, and oil liquids stored in the corresponding tanks respectively provided in the respective tributary pipes are sucked in and are passed through the joining pipes. Pump for discharging to the refueling nozzle, and a switching means that is provided at a connection position between the branch pipe and the merging pipe, and switches between communication and interruption between the merging pipe and each of the branch pipes, and at least the merging pipe and the And a cleaning means capable of cleaning the oil supply nozzle.

[0006]

According to the oil supply apparatus of the present invention, by switching the switching means, one of the tributary pipes and the merging pipe are made to communicate with each other, and the other tributary pipes and the merging pipes are cut off from each other. The pump provided in the tributary pipe discharges the oil liquid in the one tank connected to the one tributary pipe to the oil supply nozzle through the joining pipe. As a result, the oil liquid in the one tank is supplied to the object to be supplied. After this refueling, when refueling the oil liquid in the other tank connected to the other tributary pipe, after cleaning at least the merging pipe and the refueling nozzle by the cleaning means, by switching the switching means,
Another tank connected to the other tributary pipe by a pump provided in the other tributary pipe in a state where the other tributary pipe and the merging pipe are communicated with each other and the communication between the other tributary pipe and the merging pipe is blocked. The oil liquid inside is discharged to the oil supply nozzle through the confluent pipe. As a result, the oil liquid in the other tank is supplied to the oil supply target. In this way, even when it is possible to refuel a plurality of oil types, the refueling nozzle can be shared.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An oil supply device according to an embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 forms the outer shell of the fueling device,
A box installed on the above-ground part, reference numeral 2 is a control device for controlling the operation of the entire refueling device, and reference numeral 3A is buried underground A
A tank for storing a system oil type (for example, high-octane), reference numeral 3B is a B system oil type (for example, light oil) different from the tank 3A
Each shows a tank for storing the. In the following description, those related to A type oil supply, such as refueling, will be denoted with an A subscript, and those related to B system oil type lubrication, etc. will be denoted with a B suffix. To do.

The tributary pipes 4A and 4B are communicatively connected to the tanks 3A and 3B, respectively, and the tributary pipes 4A and 4B are connected to the tanks 3A and 3B at opposite ends thereof. Are collectively connected to the merging pipe 5.

Pumps 6A and 6B are provided on the tributary pipes 4A and 4B, respectively. These pumps 6A,
The pump motor 7A, 7B, which is a part of the pump 6B, is driven by a drive signal output from the control device 2, so that the oil liquid in the tanks 3A, 3B of the same system is sucked and the It is designed to discharge to the merging pipe 5 side via the tributary pipes 4A and 4B of the oil pipe, and the discharged oil liquid is discharged from the connection position of each of the tributary pipes 4A and 4B to the pumps 6A and 6B to the merging pipe 5 side. Flowmeters 8A and 8B are provided to detect the flow rate of. The flowmeters 8A and 8B are provided with flow rate pulse transmitters 9A and 9B for outputting a pulse signal according to the flow rate of the discharged oil liquid to the control device 2. In addition, one end side of the relief pipes 10A and 10B is connected to each of the pumps 6A and 6B, and the relief pipes 10A and 10B are connected.
To the other end side of the return pipes 12A, 12B via air separators 11A, 11B for removing air mixed in the oil liquid.
Is connected to one end side of the return pipes 12A and 12B.
The other end side is a pump 6 of the same system of tributary pipes 4A, 4B.
It is connected between A and 6B and the tanks 3A and 3B.
These relief pipes 10A and 10B, the air separator 1
1A, 11B and return piping 12A, 12B,
The pumps 6A and 6B use the tank 3 of the same system to store the oil liquid discharged when the piping system on the discharge side of the same system is not open.
It is designed to be missed in A and 3B.

Between the flowmeters 8A and 8B of each of the tributary pipes 4A and 4B and the connection position to the merging pipe 5, one end of each of the tributary air pipes 14A and 14B is connected. At the position, refueling / cleaning switching valves 15A, 15
B is provided. In addition, each tributary air pipe 14A, 14
The other end side of B is collectively connected to one end side of the air pipe 16, and the other end side of the air pipe 16 is driven by a drive signal from the control device 2 to generate compressed air. Connected to the tributary air piping 14A,
A clean system switching valve 18 is provided at a connection position between 14B and the air pipe 16.

The lubrication / cleaning switching valves 15A and 15B are three-way solenoid valves, and in response to a switching signal from the control device 2, the branch pipes 4A and 4B are connected to the merging pipe 5 side and the flow meters 8A and 8B of the tributary pipes 4A and 4B are used. Side and the tributary air piping 14
Oil supply side position that does not communicate with A and 14B, and tributary piping 4
The merging pipe 5 side of A and 4B is not connected to the flowmeters 8A and 8B side of the tributary pipes 4A and 4B, and the tributary air pipe 14A,
14B is connected to the clean side position.

Further, the clean system switching valve 18 is also a three-way solenoid valve, and the air piping 16 is supplied by a switching signal from the control device 2.
Is communicated with the tributary air pipe 14A of the A system and is not communicated with the tributary air pipe 14B of the B system, and a position on the A system side,
The air pipe 16 can be switched to a position on the B system side, which is in communication with the tributary air pipe 14B of the B system and is not in communication with the tributary air pipe 14A of the A system. Here, the air compressor 17, the air pipe 16, the cleaning system switching valve 18, the tributary air pipes 14A and 14B and the oil supply cleaning switching valves 15A and 15B constitute the cleaning means 19.

The merging pipe 5 and the tributary pipes 4A, 4B
At the connection position with, the merging pipe 5 and each tributary pipe 4A, 4B
A supply oil type switching valve 20 is provided which constitutes switching means for switching between communication with and disconnection with. This supply oil type switching valve 2
Reference numeral 0 denotes a three-way solenoid valve, which, in response to a switching signal from the control device 2, connects the merging pipe 5 with the tributary pipe 4A of the A system and does not communicate with the tributary pipe 4B of the B system. 5 can be switched to a position on the B system side, which is in communication with the tributary pipe 4B of the B system and is not in communication with the tributary pipe 4A of the A system.

The merging pipe 5 is connected to the internal pipe portion 21 on the side connected to the supply oil type switching valve 20, and is connected to the opposite side of the internal pipe portion 21 to the supply oil type switching valve 20 and also has a box body. The oil supply hose 22 is led to the outside from the main unit 1, and an oil supply valve 23, which is an electromagnetic valve, is provided at a connection position between the internal piping portion 21 and the oil supply hose 22. The refueling valve 23 is switched between an open position in which the internal piping portion 21 and the refueling hose 22 are communicated with each other and a closed position in which the communication between the internal piping portion 21 and the refueling hose 22 is blocked, in response to a switching signal from the control device 2. It is designed to be used.

The tip of the oil supply hose 22 is connected to an oil supply nozzle 25, the tip of which can be inserted into an oil supply port (not shown) to be supplied, and a pressure above a predetermined value is applied to the oil supply nozzle 25. Then, an automatic valve (not shown) that opens is provided. Further, the refueling nozzle 25 is turned on by an operator when the refueling target is actually refueled, and is turned off once it is turned on.
A nozzle switch 26 that outputs an ON signal to the control device 2 until it is turned on is provided. Furthermore, the refueling nozzle 25
A liquid level sensor (not shown) for detecting the oil liquid level in the object to be refueled and automatically turning off the nozzle switch 26 is provided on the front end side of the oil supply.

Here, on the outer side of the box body 1, there is provided an accommodating portion 27 capable of accommodating the refueling nozzle 25 with the refueling tip side facing down. In the storage portion 27, the refueling nozzle 25 is kept in the OFF state in a stored state, and the refueling nozzle 25 is stored in the storage portion 27.
The nozzle detection switch 28 that is turned on when it is removed from the control device 2 and outputs an ON signal to the control device 2, and the fueling nozzle that is stored by projecting the rod 29 into the storage portion 27 when the lock signal is output from the control device 2. When the lock signal from the control device 2 is released, the rod 29 is retracted from the inside of the housing 27 and the refueling nozzle 25 stored in the housing 27 is removed from the housing 27. A nozzle lock mechanism 30 that enables the nozzle lock mechanism is provided.

In addition, the lower end side of the storage section 27 has a substantially pyramidal shape with the apex side located on the lower side, and the lower end side communicates with the upper end side of the recovery pipe 32. This recovery pipe 32
The lower end side is connected to the air separators 11A and 11B, and the tanks 3A and 3B are connected via the air separators 11A and 11B and the return pipes 12A and 12B.
Branch recovery pipes 33A and 33B connected to the recovery recovery pipe 32 and the branch recovery pipes 33A and 33B, respectively.
A recovered oil type switching valve 34 is provided at a connection position with B.

The recovered oil type switching valve 34 is a three-way solenoid valve, and in response to a switching signal from the control device 2, the recovery pipe 32.
To the A-system branch recovery pipe 33A and the B-system branch recovery pipe 33B not to communicate with the A-system side position,
The recovery pipe 32 can be switched to a position on the B system side, which is in communication with the branch recovery pipe 33B of the B system and is not in communication with the branch recovery pipe 33A of the A system. In addition,
An air separator 1 is provided in each of the branch recovery pipes 33A and 33B.
For example, a float type check valve (not shown) is provided to prevent the oil liquid from overflowing from the 1A and 11B sides to the recovered oil type switching valve 34 side.

Then, on the outer surface of the box body 1, the A system oil type setting key 36A which is turned on by the operator when selecting the A system oil type, and the work when selecting the B system oil type. An oil type setting section 37 having a B system oil type setting key 36B that is turned on by a person is provided, and these oil type setting keys 36A and 36B output an ON signal to the control device 2 when turned on. It is supposed to do.

Further, on the outer surface of the box body 1, there is provided a lubrication amount indicator 38 for displaying the lubrication amount according to the output from the control device 2. Here, the control device 2 uses the pumps 6A, 6A.
The amount of oil supply according to the pulse signal output from the flow rate pulse transmitters 9A and 9B according to the flow rate of the oil liquid discharged by B is subjected to a predetermined process, and then the amount of oil supply display 38 is displayed.
In addition, a reset signal is output to the refueling amount display 38 to reset the displayed refueling amount to zero.

Further, on the outer surface of the box body 1, when the operator turns on the A-system oil type setting key 36A, a light-up signal from the control device 2 which receives the output and outputs the A-system oil type. A system oil type indicator 40 that indicates that the type setting key 36A is selected, for example, by lighting a lamp
When the operator turns on the A-system oil type setting key 36B and the B-system oil type setting key 36B, a B-system oil type indicator 40B indicating that the B-system oil type setting key 36B is selected is also provided. There is.

Next, the control contents relating to the present invention of the control device 2 of the oil supply device having the above-mentioned configuration will be described step by step with reference to the flow charts of FIGS. 2 and 3. First, the fueling valve 23 is set to the closed position as an initial setting when the fueling device is started up.

[Step S1] A system oil type setting key 36
Whether the ON signal is output from A, that is, the operator selects the oil type of system A (for example, high octave)
It is determined whether or not the system oil type setting key 36A is turned on. If the ON signal is output from the A system oil type setting key 36A, the process proceeds to step S2, and if not, the process proceeds to step S26. [Step S2] A lighting signal is output to the A-system oil type indicator 40A to light the A-system oil type indicator 40A. Then, the process proceeds to step S3.

[Step S3] A switching signal is output to the supply oil type switching valve 20 to set it to the A system side position, that is, the position where the branch pipe 4A of the A system and the merging pipe 5 communicate with each other. Then, the process proceeds to step S4. [Step S4] A switching signal is output to the refueling / cleaning switching valve 15A of the A system, and the switching signal is output to the refueling side position, that is, the tributary pipe 4
The position where the A merging pipe 5 side and the tributary pipe 4A flow meter 8A side are communicated. Then, the process proceeds to step S5.

[Step S5] A switching signal is output to the recovered oil type switching valve 34 to bring it to a position on the A system side, that is, a position where the recovery pipe 32 communicates with the branch recovery pipe 33A of the A system. Then, the process proceeds to step S6. [Step S6] It is determined whether or not an ON signal is output from the nozzle detection switch 28, that is, whether or not the refueling nozzle 25 has been removed from the storage portion 27 by the operator. Then, if the ON signal is output from the nozzle detection switch 28, the process proceeds to step S7, and if not, the determination in step S6 is repeated.

[Step S7] A-system pump motor 7
A drive signal is output to A and this is started. Then, the process proceeds to step S8. [Step S8] A reset signal is output to the oil supply amount display 38 to reset the amount of oil displayed on the oil supply amount display 38 to zero. Then, the process proceeds to step S9.

[Step S9] It is determined whether or not an ON signal is output from the nozzle switch 26, that is, whether or not an operator has turned on the nozzle switch 26 in order to refuel an object to be refueled. Then, it is turned on from the nozzle switch 26.
When the signal is output, it progresses to step S11, and when that is not right, it progresses to step S10. [Step S10] The nozzle detection switch 28 is turned off.
It is determined whether or not the signal is output (the output of the ON signal is stopped), that is, whether or not the refueling nozzle 25 is returned to the storage portion 27 by the operator. When the OFF signal is output from the nozzle detection switch 28, the process proceeds to step S18 and the pump motor 7 of the A system is
Stop A, and if not, return to step S9.

[Step S11] The refueling amount measuring process is started. Then, the process proceeds to step S12. Here, in this refueling amount measurement processing, the refueling amount is calculated by measuring the flow rate pulse output from the selected flow rate pulse transmitter 9A on the A system side, and the refueling amount is displayed based on this calculation result. Is output to the fuel amount indicator 38. At the beginning of refueling, the predetermined flow rate pulse is canceled and the refueling amount is not calculated. The predetermined flow rate pulse amount corresponds to the amount of oil that is not actually refueled, and is a pulse amount corresponding to the flow rate required to fill the flow path between the refueling nozzle 25 and the refueling cleaning switching valve 15A. [Step S12] A switching signal is output to the refueling valve 23,
This is opened. As a result, the tank 3 is
The A-system oil liquid sucked from A reaches the oil supply nozzle 25 via the tributary pipe 4A and the merging pipe 5, and the oil supply nozzle 25
The automatic valve (not shown) provided in the above is opened by hydraulic pressure, and the fuel flows out toward the refueling target. Then, the process proceeds to step S13.

[Step S13] Whether or not the OFF signal is output from the nozzle switch 26 (the output of the ON signal is stopped), that is, in order to stop refueling of the refueling target, an operator or not shown. A signal from the liquid level sensor determines whether or not the nozzle switch 26 has been turned off. If the OFF signal is output from the nozzle switch 26, the process proceeds to step S14. If not, the determination in step S13 is repeated until the OFF signal is output to open the fuel supply valve 23. Maintain and continue refueling. [Step S14] Since the OFF signal is output from the nozzle switch 26, a switching signal is output to the oil supply valve 23 to close it. As a result, the hydraulic pressure of the oil liquid in the oil supply nozzle 25 is lowered and the automatic valve (not shown) is closed to stop the oil liquid from being discharged. Then, the process proceeds to step S15.

[Step S15] Nozzle detection switch 2
It is determined whether the OFF signal is output from 8 (the output of the ON signal is stopped), that is, whether the refueling nozzle 25 is returned to the storage unit 27 by the operator. If the OFF signal is output from the nozzle detection switch 28, the process proceeds to step S17, and if not, the process proceeds to step S16. [Step S16] Whether or not an ON signal has been output from the nozzle switch 26, that is, the operator needs to refuel the refueling target in order to adjust the amount of refueling, etc.
It is determined whether or not is turned on. Then, if the ON signal is output from the nozzle switch 26, the process returns to step S12 to reopen the oil supply valve 23, and if not, the process returns to step S15.

[Step S17] Since the refueling nozzle 25 is returned to the storage section 27, it is determined that the refueling work for the refueling target by the worker is completed, and the refueling amount measurement process is stopped. As a result, the refueling amount display 38 displays the final refueling amount. Then, the process proceeds to step S18. [Step S18] The output of the drive signal to the pump motor 7A of the A system is stopped and stopped. Then, the process proceeds to step S19.

[Step S19] Nozzle lock mechanism 30
A lock signal is output to the rod lock mechanism 30, and the rod 29 of the nozzle lock mechanism 30 is projected into the storage portion 27 to make it impossible to remove the stored fuel filler nozzle 25 from the storage portion 27. That is, the refueling nozzle 25 is prevented from being accidentally detached from the storage portion 27 during the cleaning process executed in the following steps. Then, the process proceeds to step S20. [Step S20] A switching signal is output to the clean system switching valve 18 and the signal is sent to the A system side position, that is, the air pipe 16 is set to A.
The position is set to communicate with the tributary air piping 14A of the system. Then, the process proceeds to step S21.

[Step S21] A switching signal is output to the oil-cleaning switching valve 15A of the A system, and the switching signal is output to the cleaning side position, that is, the merging pipe 5 side of the tributary pipe 4A and the tributary air pipe 14A.
Set to the position to communicate with. Then, the process proceeds to step S22. [Step S22] A switching signal is output to the refueling valve 23,
This is opened. As a result, the air compressor 17
And the refueling nozzle 25 are the tributary air piping 14A of the A system,
Confluence pipe 5 side of A branch tributary pipe 4A and confluence pipe 5
Will be communicated through. Then, the process proceeds to step S23.

[Step S23] Air Compressor 17
Output a drive signal to the air compressor 1 for a predetermined time.
Compressed air is generated by 7. Then, the generated compressed air reaches the refueling nozzle 25 through the merging pipe 5 side of the A system tributary air pipe 14A, the A system tributary pipe 4A, and the merging pipe 5, and is provided in the refueling nozzle 25. The automatic valve (not shown) is opened by air pressure, and the fuel is discharged from the oil supply nozzle 25. As a result, the passage A of the compressed air, that is, the A-system oil liquid remaining in the merging pipe 5 side of the A-system tributary pipe 4A, the merging pipe 5 and the refueling nozzle 25 is discharged from the refueling nozzle 25. , Recovery pipe 32
Further, it reaches the air separator 11A through the A system branch recovery pipe 33A, is deaerated, and is returned from the return pipe 12A to the A system tank 3A. Therefore, the system A oil liquid is discharged from the passage of the compressed air to clean the inside of the passage. Then, the process proceeds to step S24.

[Step S24] A switching signal is output to the oil supply valve 23 to close it. Then, the process proceeds to step S25. [Step S25] The output of the lock signal to the nozzle lock mechanism 30 is stopped, and the rod 2 of the nozzle lock mechanism 30 is stopped.
9 is retracted from the storage portion 27 so that the stored refueling nozzle 25 can be removed from the storage portion 27. This enables the next refueling.

[Step S26] If it is determined in the above step S1 that the ON signal is not output from the A system oil type setting key 36A, this step S26
In, whether or not an ON signal is output from the B system oil type setting key 36B, that is, the operator selects the B system oil type (for example, light oil), and the B system oil type setting key 36B is selected.
It is determined whether or not is turned on. When the ON signal is output from the B system oil type setting key 36B,
If not, go to step S27.
Return to 1.

[Step S27] In order to supply the oil type of the B system, the same processing as the above-described steps S2 to S25 is performed for the B system. The flow will be briefly described. After the B system oil type indicator 40B is turned on, the supply oil type switching valve 20 is set to the B system side position, and the B system oil supply / cleaning switching valve 15B is set to the oil supply side position, The recovered oil type switching valve 34 is set to the B system side position. Then, in this state, when the ON signal is output from the nozzle detection switch 28, the pump motor 7B of the B system is started and the oil supply amount display 38 is reset to zero. Further, when the ON signal is output from the nozzle switch 26, the refueling amount measurement process is started, and the refueling valve 23 is opened to discharge the B system oil type to the refueling target. When refueling is completed and an OFF signal is output from the nozzle switch 26, the refueling valve 23 is closed. Then, when the refueling nozzle 25 is returned to the storage unit 27 and the OFF signal is output from the nozzle detection switch 28, the refueling amount measurement process is stopped,
The pump motor 7B of the B system is stopped. After that, the refueling nozzle 25 housed by the nozzle lock mechanism 30 is made impossible to remove from the housing portion 27, the clean system switching valve 18 is set to the B system side position, and the B system refueling / cleaning switching valve 15B is cleaned. It is set to the side position and the refueling valve 23 is opened. Then, compressed air is generated by the air compressor 17, and the oil liquid of the B system that remains in the passage of the compressed air, that is, in the merge pipe 5 side of the branch pipe 4B of the B system, the merge pipe 5, and the oil supply nozzle 25. Refueling nozzle 2
Discharge from 5. As a result, the B-system oil liquid remaining in the compressed air passage passes through the recovery pipe 32 and the B-system branch recovery pipe 33B, and the air separator 11
After being deaerated in B, it is returned from the return pipe 12B to the tank 3B of the B system.

As described above, according to the oil supply system of the present embodiment, by switching the supply oil type switching valve 20 which is the switching means, for example, the oil liquid in the tank 3A of the A system is joined to the merging pipe 5 or the like. Through the refueling nozzle 25 to refuel the refueling target, and after refueling, the clean system switching valve 18 and the refueling / cleaning switching valve 15A are switched to clean the merging pipe 5 and the refueling nozzle 25 with compressed air from the air compressor 17. After that, the supply oil type switching valve 20 is switched to supply the oil liquid in the tank 3B of the B system (of course, the A system may be continuous) from the refueling nozzle 25 to the refueling target via the merging pipe 5 and the like. The above process can be appropriately repeated. As described above, even when a plurality of oil types can be refueled by one refueling device, one refueling nozzle 25 can be shared. As a result, it is possible to suppress a significant increase in price and increase the degree of freedom in design.

Further, since the supply oil type switching valve 20 for connecting the merging pipe 5 and the tributary pipes 4A and 4B is provided inside the box body 1, the refueling hose 22 of the merging pipe 5 can be shared by one. become. As a result, there is no restriction on the design due to the increase in the number of refueling hoses 22, and it is possible to prevent a refueling operator from tripping over the refueling hoses 22.

The air compressor 17 may be separately provided outside the box body 1 instead of being provided inside the box body 1. In this case, the air compressor 17 is a clean system via a tube or the like. It will be connected to the switching valve 18. Further, the branch recovery pipes 33A and 33B can be directly connected to the tanks 3A and 3B of the same system without the air separators 11A and 11B. Further, it is possible to provide the four kinds of solenoid valves without using the clean system switching valve 18 and to share the supplied oil type switching valve 20 and the two oil supply cleaning switching valves 15A and 15B. In this case, the air pipe 1 is provided at the connection position of the merging pipe 5 and the tributary pipes 4A and 4B.
6 is connected without division, and a four-way solenoid valve is provided at this connection position. This four-way solenoid valve connects the merging pipe 5 and the tributary pipe 4A of the A system, the position of communicating the merging pipe 5 and the tributary pipe 4B of the B system, and the merging pipe 5 and the air pipe 16 to each other. It is only necessary to be able to switch to the position where it is operated.

Further, instead of opening and closing the oil supply valve 23 by operating the nozzle switch 26, the oil supply valve 23 is not provided and the pumps 6A, 6 of the corresponding system are operated by operating the nozzle switch 26.
B may be started and stopped. in addition,
Configurations other than the tanks 3A and 3B of the above embodiment are further added, and the added tributary pipes respectively correspond to the corresponding tanks 3.
By communicating with A and 3B, it is possible to provide a plurality of oil supply nozzles capable of supplying oil liquids of different oil types,
Also in this case, the number of refueling nozzles and refueling hoses can be reduced. That is, for example, in one lubricator, all combinations of A and B oil liquids (A-
In order to be able to refuel with A, AB, B-A, BB), the conventional one needs four refueling nozzles and four refueling hoses. In this case, the refueling nozzles are required. Two, two refueling hoses will be needed. Then, by providing a plurality of sets of a refueling hose and a refueling nozzle capable of coping with a plurality of oil types in this way, a refueling target (for example, a vehicle)
It is possible to significantly reduce the constraint on the stop position of.

Further, in the above description, the example in which two oil types can be supplied is described, but it is also possible to correspond to three or more types of oil. In this case, for example, simply in accordance with the increase in the number of oil types, the number of tributary pipes, recovery tributary pipes, and fuel / purification switching valves and the ports of the supply oil type switching valve, the clean system switching valve, and the recovery oil type switching valve The number and the number of switching positions, the number of pumps and flow meters, and the like may be increased.

[0044]

As described in detail above, according to the oil supply apparatus of the present invention, by switching the switching means, one branch pipe and the joining pipe are made to communicate with each other, and the other branch pipe and the joining pipe are connected. With the communication cut off, the pump provided in the one tributary pipe discharges the oil liquid in the one tank connected to the one tributary pipe to the refueling nozzle via the merging pipe, and the oil in the one tank is discharged. When the liquid is supplied to the object to be refueled, and after this refueling, the oil liquid in the other tank connected to the other tributary pipe is refilled, at least the merging pipe and the refueling nozzle are cleaned by the cleaning means, and then the switching means By switching the other tributary pipes and the merging pipes, the other tributary pipes and the merging pipes are cut off, and the other tributary pipes are connected to the other tributary pipes by a pump provided in the other tributary pipes. Other to connect Via the collecting pipe the oil solution in the tank was discharged to the oil supply nozzle, fueling the hydraulic fluid in the other tank refueling subject. In this way, even when it is possible to refuel a plurality of oil types, the refueling nozzle can be shared. Therefore, by reducing the number of refueling nozzles, a large increase in price can be suppressed, and the degree of freedom in design can be increased.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing a first-stage portion of the control contents of the control device for the fuel supply device according to the embodiment of the present invention.

FIG. 3 is a flowchart showing a latter part of the control content of the control device for the fuel supply device according to the embodiment of the present invention.

[Explanation of symbols]

 3A, 3B tanks 4A, 4B tributary pipes 5 merge pipes 6A, 6B pumps 19 cleaning means 20 oil supply oil type switching valve (switching means) 25 oil supply nozzles

Claims (1)

[Claims] 1. A plurality of tanks for respectively storing different kinds of oil liquids, tributary pipes respectively connected to the respective tanks, a base end side of each tributary pipe, and an oil supply nozzle on the tip side. And a pump that sucks the oil liquid stored in the corresponding tank provided in each of the tributary pipes and discharges the oil liquid to the refueling nozzle through the merging pipe, the tributary pipe and the merging pipe Is provided at the connection position of
A refueling device comprising: a switching unit that switches communication / disconnection between the merging pipe and each of the tributary pipes; and a cleaning unit that can clean at least the merging pipe and the refueling nozzle.