JP4431073B2 - Lubrication device - Google Patents

Description

  The present invention relates to a fueling device, and more particularly to a fueling device configured to insert a nozzle from a vertical direction into a fueling port of a kerosene container.

  At the gas station where kerosene is sold, a meter dedicated to kerosene is installed. The kerosene-only metering machine is configured, for example, by raising and lowering the fueling nozzle according to the height of the plastic container (kerosene container) and inserting the nozzle from the vertical direction into the fueling port provided at the top of the plastic container. Or an oil supply pipe extending downward from the side surface of the weighing machine is inserted into the oil supply port provided in the upper part of the plastic container from the vertical direction to supply oil.

  In this type of conventional kerosene weighing machine, when the preset amount of oil can be set by turning on the preset switch button corresponding to the capacity of the plastic container (for example, 18 liters or 20 liters), only the amount of the preset value set. Fill kerosene into a plastic container. Also, when refueling a plurality of plastic containers, if the preset switch button is turned on a plurality of times or the continuous preset button is turned on to set a plurality of refuelable amounts, a plurality of preset values set The plurality of plastic containers can be refueled by the number of times.

  Further, as a conventional oil supply device for kerosene, for example, an oil supply nozzle is supported so that it can be raised and lowered. When a plastic container is placed on a mounting table, the oil supply nozzle is lowered to supply oil to the oil supply port of the plastic container. There is one configured to start refueling by inserting a nozzle (see, for example, Patent Document 1).

Further, in the fueling device, the fueling nozzle is rotated from the horizontal state to the vertical state, the discharge pipe is inserted into the fueling port of the plastic container from the vertical direction, and then the fueling start switch is turned on to turn on the plastic container. You can refuel.
JP 11-91893 A

  However, in the above-described conventional oil supply device, the oil supply nozzle is rotatably supported so that the direction of the oil supply nozzle can be changed. For example, the oil supply nozzle has the discharge pipe in a direction other than the lower direction, that is, the oil supply If the oil supply start switch is turned on in a state where the nozzle is not inserted into the plastic container, there is a problem that kerosene is discharged from the oil supply nozzle.

  Then, an object of this invention is to provide the oil supply apparatus which solved the said subject.

  In order to solve the above problems, the present invention has the following means.

The invention according to claim 1 is a nozzle that is inserted vertically downward into the fuel filler opening of the kerosene container,
An air introduction conduit communicating with the tip of the nozzle;
An oil supply means for supplying oil to the nozzle by an oil supply start operation;
Negative pressure generating means for generating negative pressure by refueling the nozzle;
A refueling stop means for detecting a negative pressure by the negative pressure generating means and stopping refueling when air introduction from the air introduction line is closed;
In a fueling device having
Air when the direction extending the nozzle vertically downward direction to open the air inlet pipe, when directed in a direction other than vertically downward the nozzle to shut off the air inlet pipe An introduction pipe opening / closing mechanism is provided in the nozzle,
The air introduction pipe opening / closing mechanism is
A first opening / closing mechanism that shuts off the air introduction pipe line when the nozzle is directed horizontally;
A second opening / closing mechanism that shuts off the air introduction conduit when the nozzle is directed upward;
It is provided with.

According to the present invention, when the nozzle is in a vertically downward state , the air introduction pipe is opened, and when the nozzle is directed in a direction other than the vertical downward direction, the air introduction pipe is cut off. Since the road opening and closing mechanism is provided, the air introduction pipe line is opened with the nozzle inserted into the oil filler opening of the kerosene container, so that oil supply is possible and the nozzle is not inserted into the oil filler opening of the kerosene container. Even if the refueling start switch is turned on, the air introduction line is shut off, so that the automatic refueling stop mechanism is activated to automatically stop refueling and prevent kerosene from being discharged to the surroundings. it can.

  Further, according to the present invention, the first opening / closing mechanism that shuts off the air introduction conduit when the nozzle is directed in the horizontal direction and the second opening and shutting mechanism that shuts off the air introduction conduit when the nozzle is directed upward. Since the air introduction conduit is shut off even when the oil supply start switch is turned on with the nozzle directed horizontally and upward, the automatic oil supply stop mechanism is activated to supply oil. Is automatically stopped, and kerosene can be prevented from being discharged to the surroundings.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a front view showing an embodiment of a fueling device according to the present invention. FIG. 2 is a plan view of the fueling apparatus shown in FIG. FIG. 3 is a side longitudinal sectional view of the fueling device shown in FIG.

  As shown in FIGS. 1 to 3, the fueling device 10 is a device that performs self-service fueling of kerosene, and includes a weighing machine 12 and first and second mounting tables 14 provided on both sides of the weighing machine 12. , 16, first and second oil supply nozzles 22, 24 supported by first and second nozzle support portions 18, 20 standing on the back surfaces of the first and second mounting tables 14, 16, 1. First and second oil supply hoses 26, 28 connected to the second oil supply nozzles 22, 24, respectively. The weighing machine 12 is configured to be capable of simultaneously supplying oil to each of the poly containers (kerosene containers) 46 mounted on the first and second mounting tables 14 and 16 installed on the left and right sides. The oil supply nozzles 22 and 24 are supported by the nozzle support portions 18 and 20 so as to be rotatable in the vertical direction at a height position above the plastic container 46.

  Further, inside the housing 12 a of the weighing machine 12, there are an oil supply line 13 connected to an underground tank (not shown), a pump 15 to which a downstream end of the oil supply line 13 is connected, and a pump 15. First and second flow meters 17 and 19 that measure the flow rate of the oil liquid (kerosene) discharged to each oil supply path, and first and second flow meters 17 and 19 that extend downward from the first and second flow meters 17 and 19, respectively. Second discharge pipes 21 and 23, first and second solenoid valves 25 and 27 connected to downstream ends of the first and second discharge pipes 21 and 23, and first and second First and second oil supply hoses 26 and 28 connected to the discharge ports of the electromagnetic valves 25 and 27 are attached.

  The first and second oil supply hoses 26 and 28 are accommodated in the housings 18a and 20a of the nozzle support portions 18 and 20 disposed on both sides of the weighing machine 12, respectively. Therefore, the rubber oil supply hoses 26 and 28 are not exposed to wind and rain, have improved weather resistance, and are prevented from being deteriorated due to secular change.

  Further, the weighing machine 12 has a display unit 29 projecting from the upper part of the housing 12a, and first and second indicators 30 and 32 for displaying preset values and the amount of oil supply on the back of the display unit 29, and a switch. It has the 1st, 2nd operation parts 34 and 36 for performing operation. Also, on the front surface of the display unit 29, first and second indicators 30 and 32 for displaying preset values, the amount of oil supply, and the like are provided in the same manner as the back surface.

  The first and second operation sections 34 and 36 have the same configuration, and each includes an 18-liter preset switch button 38, a 20-liter preset switch button 40, a fueling start switch button 42, and a fueling stop switch button 44. Is provided.

  Moreover, the 1st, 2nd mounting bases 14 and 16 are formed in the dimension which can mount the poly container 46 with three horizontal widths side by side so that it may mention later. Furthermore, the upper surfaces of the mounting tables 14 and 16 on which the polycontainer 46 is mounted are formed by punching plates provided with a large number of small holes 14a and 16a so that the oil liquid overflowing during the oil supply can be recovered. The oil supply nozzles 22 and 24 are slide mechanisms 48 provided in the first and second support portions 18 and 20 so as to be inserted into the oil supply ports of the respective poly containers 46 placed on the placement tables 14 and 16. Is supported so as to be slidable in the left-right direction (X direction).

  FIG. 4 is a view of the inside of the support portion 18 as seen from the back side. As shown in FIG. 4, the slide mechanism 48 has a pair of guide rails 48a and 48b arranged in parallel in the left-right direction (X direction), and slides a bracket 49 that supports the fuel supply nozzles 22 and 24 in the X direction. I support it as possible. Since the oil supply nozzles 22 and 24 can be easily moved in the left-right direction (X direction) by the slide mechanism 48, even when a plurality of poly containers 46 are placed side by side on the placement tables 14 and 16, it is efficient. Continuous oiling is possible.

  The bracket 49 is urged to a standby position close to the weighing machine 12 by the spring force of the coil spring 49a. For this reason, after the end of refueling, the refueling nozzles 22 and 24 automatically return to the standby position by the spring force of the coil spring 49a. After the refueling is completed, if the refueling nozzles 22 and 24 are separated from the plastic container 46, the refueling nozzles 22 and 24 automatically return to the standby position, so that the operator does not use nerves at the positions of the refueling nozzles 22 and 24. The setting operation before refueling can be performed quickly.

  Instead of providing the coil spring 49a, for example, by providing the guide rails 48a and 48b with a predetermined angle with respect to the horizontal, the bracket 49 can be slid to the lower position and moved to the standby position.

  In addition, the oil supply hoses 26 and 28 connected to the oil supply nozzles 22 and 24 are curved so as to bend according to the stroke when the oil supply nozzles 22 and 24 slide along the guide rails 48a and 48b. It is attached. Accordingly, the oil supply hoses 26 and 28 are curved with a radius of curvature corresponding to the movement position of the oil supply nozzles 22 and 24, and are provided so as not to be a resistance to the sliding operation of the oil supply nozzles 22 and 24.

  Here, the structure of the oil supply nozzles 22 and 24 will be described. In addition, since the oil supply nozzle 22 and the oil supply nozzle 24 are the same structures, the structure of one oil supply nozzle 22 is demonstrated.

  FIG. 5 is a plan view for explaining the configuration of the fueling nozzle 22. As shown in FIG. 5, the fueling nozzle 22 is composed of a loading arm provided so as to be pivotable in the vertical direction, and is pivoted to the first arm 51 a connected to the fueling hose 26 and the first arm 51 a. A second arm 51b that is operatively coupled, a third arm 51c that is pivotally coupled to the second arm 51b, and a fourth arm portion that is pivotally coupled to the third arm 51c 51d. Further, a nozzle body 50A having a negative pressure generating portion and a discharge pipe portion 51e having a liquid level detecting portion are provided at the tip of the fourth arm portion 51d.

  Between each arm 51a-51d, the swivel coupling 53a-53c connected so that rotation to an up-down direction is possible is provided. The swivel joints 53a to 53c are configured such that the side surfaces of the end portions of the arms 51a to 51d are pivotably coupled, and therefore cannot be swung in the left-right direction (X direction).

In addition, each swivel joint 53a-53c, the stopper pin _53a 1 - 53c ₁ is provided, the side surface of the arm 51b~51d for restricting the rotation angle, the stopper pin _53a 1 - 53c ₁ Stopper pins 51b _{1 to} 51d ₁ are provided so as to protrude so as to come into contact with each other. Thus, the fueling nozzle 22 is prevented over-rotation between the arms 51a~51d by the stopper pin _53a 1 - 53c ₁ and the stopper pin _{51b 1 ~51d} 1 abuts is, the fueling nozzle 22 for example by mistake attendant Even when it is separated from the hand, it is possible to prevent the discharge pipe portion 51e at the tip from hanging down and colliding with the mounting tables 14 and 16.

  FIG. 6 is a side view showing a state where the fueling nozzle 22 is folded to the standby position. As shown in FIG. 6, the oil supply nozzle 22 has a discharge pipe portion in which the first arm 51 a is rotated rearward, and each of the arms 51 a to 51 d is folded above the support portion 18 in a U shape. 51e is held in a substantially horizontal state.

  In this standby state, the oil supply nozzle 22 is located above the support portion 18, so that when the discharge pipe portion 51 e is slid in the left and right direction (X direction), the discharge pipe portion 51 e is placed on the poly container 46 placed on the placement table 14. It can be moved so as not to collide. Further, the grip 51f fixed to the fourth arm portion 51d is attached so as to be positioned behind the fourth arm portion 51d, that is, in front of the clerk.

  In addition, in order to collect the oil liquid overflowing from the plastic container 46 during refueling, a space 14b for accommodating the recovery container 55 is provided in the mounting table 14, and a small hole 14a is provided above the recovery container 55. The taper part 14c for guiding the oil liquid collect | recovered via this to the collection | recovery container 55 is provided.

FIG. 7 is a side view showing a state in which the fueling nozzle 22 is pulled out to the fueling position. As shown in FIG. 7, when supplying kerosene to the poly container 46, the clerk grasps the grip 51 f of the oil supply nozzle 22 and rotates the first arm 51 a forward to dispose the discharge pipe portion 51 e to the poly container 46. After moving to the container 46 side, the container 46 is rotated in the drooping direction and inserted downward from the vertically upward direction into the fuel filler opening provided in the upper part of the plastic container 46. This makes it possible to supply the plastic container 46 with oil.

  Here, the configuration of the nozzle body 50A of the fueling nozzle 22 will be described. FIG. 8 is a longitudinal sectional view of the nozzle body 50A according to the first embodiment in a horizontal state. FIG. 9 is a vertical cross-sectional view of the nozzle body 50A in a vertical state.

  As shown in FIG. 8, the nozzle main body 50 </ b> A includes a negative pressure generation unit 60 and a liquid level detection unit 70. One negative pressure generating portion 60 is provided in an oil supply path 61 that communicates the fourth arm portion 51d and the discharge pipe portion 51e, and includes a valve seat member 62 having a tapered valve seat 62a, and a valve seat member. The valve body 63 that closes the valve 62 from the discharge side, the coil spring 64 that urges the valve body 63 in the valve closing direction, and the guide member 65 that guides the moving direction of the valve body 63 in the opening and closing direction.

  When the supply of the oil liquid (kerosene) is started, the valve body 63 is opened by the discharge pressure of the oil liquid. As a result, the oil liquid passes through between the valve seat 62a of the valve seat member 62 and the tapered portion 63a of the valve body 63 and is sent to the discharge pipe portion 51e. At that time, a negative pressure is generated by the flow rate of the oil liquid passing between the valve seat of the valve seat member 62 and the tapered portion of the valve body 63.

  The valve seat member 62 has a passage 67 that communicates the valve seat 62a on the inner peripheral side and the annular passage 66 on the outer peripheral side.

  The other liquid level detection unit 70 communicates with a liquid level detection hole 71 provided at the outer periphery of the distal end of the discharge pipe portion 51 e, an air introduction pipe 72 communicated with the liquid level detection hole 71, and the air introduction pipe 72. The air introduction pipe opening / closing mechanism 75 is connected to the air introduction pipe opening / closing mechanism 75 and the other end is connected to the annular passage 66 through the inside of the guide member 65.

  Therefore, when a negative pressure is generated in the negative pressure generating unit 60, the air from the liquid level detection hole 71 passes through the air introduction pipe 72, the air introduction pipe opening / closing mechanism 75, the communication path 65a, the annular path 66, and the path 67. Through the valve seat 62a.

The air introduction pipe opening / closing mechanism 75 includes a bent pipe 76 bent in a U-shape, a spherical valve seat 77 formed in a constricted portion in the middle of the bent pipe 76, and the oil supply nozzles 22 and 23 in a horizontal direction. It has a closing ball 78 made of a metal ball that moves to a position for closing the valve seat 77 in the state. That is, the closing ball 78 rolls to a lower position due to gravity. Therefore, in order to insert the discharge pipe portion 51e into the oil filler port of the plastic container 46, when the oil supply nozzles 22 and 23 are oriented vertically downward so that the discharge pipe portion 51e extends in the hanging direction (Ya direction) ( In the state shown in FIG. 9, the closing ball 78 is separated from the valve seat 77 to open the air introduction pipe 72. At that time, the closing ball 78 is prevented from dropping by the ball restricting portion 79 laid across the end of the bending conduit 76 into which the air introduction conduit 72 is inserted, and the air introduction conduit 72 is not closed. ing.

Further, when the discharge pipe portion 51e is not inserted into the fuel filler port of the plastic container 46, that is, when the fuel nozzles 22 and 23 are directed in directions other than the vertically downward direction, the closing ball 78 closes the valve seat 77. The air introduction pipe line 72 is shut off.

  In the present embodiment, when the oil supply nozzles 22 and 23 are in a horizontal state (the state shown in FIG. 8), the bending pipe line 76 is arranged such that the valve seat 77 of the bending pipe line 76 is positioned below the air introduction pipe line 72. Is attached. Therefore, when the posture of the oil supply nozzles 22 and 23 is set so that the discharge pipe portion 51 e extends in the horizontal direction (X direction), the closing ball 78 closes the valve seat 77.

  Further, a negative pressure detection pipe line 90 is connected to the lower part of the nozzle body 50A. The negative pressure detection pipe line 90 communicates with an automatic refueling stop mechanism (not shown) that detects that the liquid level of the plastic container 46 has risen to the full tank position and stops refueling.

  When the liquid level detection hole 71 provided in the vicinity of the tip of the discharge pipe 51e is closed by the oil supplied to the plastic container 46, the automatic oil supply stop mechanism stops the air supply to the negative pressure generator 60. Therefore, the negative pressure generated by the negative pressure generating unit 60 is introduced via the negative pressure detection pipeline 90. Then, when the diaphragm provided in the automatic refueling mechanism is displaced by negative pressure, the displacement is detected by a sensor or a micro switch or the like, and when the detection signal is output, a control device (not shown) of the weighing machine 12 Stops the operation of the pump 15 or closes the solenoid valves 25 and 27 to stop the fuel supply. Thereby, the full tank refueling to the plastic container 46 is completed.

As described above, since the air introduction pipe opening / closing mechanism 75 is provided in the nozzle body 50A, when the refueling nozzles 22 and 23 are oriented vertically downward (the state shown in FIG. 9), the closing ball 78 is The air introduction pipe 72 is opened away from the valve seat 77. Therefore, when the oil supply nozzles 22 and 23 are in the vertically downward state, the automatic oil supply stop mechanism does not operate, and the plastic container 46 can be supplied with oil. However, when the oil supply nozzles 22 and 23 are directed in a direction other than the vertically downward direction (for example, the state shown in FIG. 8), that is, when the oil supply nozzles 22 and 23 are not inserted into the oil supply port of the plastic container 46, for example, Even if the start switch button 42 is turned on, the air introduction pipe line 72 is shut off, so that the automatic refueling stop mechanism described above is activated to automatically stop the refueling and discharge kerosene to the surroundings. Can be prevented.

  FIG. 10 is a longitudinal sectional view of the nozzle body 50B of the second embodiment in a horizontal state. FIG. 11 is a longitudinal sectional view of the nozzle body 50B in a suspended state. FIG. 12 is a longitudinal sectional view of the nozzle body 50B in a vertical state. 10 to 12, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 10, the air introduction line opening / closing mechanism 80 of the nozzle body 50 </ b> B is a first opening / closing line that blocks the air introduction line 72 when the oil supply nozzles 22, 23 are oriented in the horizontal direction (X direction). The mechanism 82 and the 2nd opening-and-closing mechanism 84 which interrupts | blocks the air introduction pipeline 72 when the oil supply nozzles 22 and 23 are faced upward are provided.

  As in the first embodiment, the first opening / closing mechanism 82 includes a bent conduit 76 bent into a U shape, and a spherical valve seat 77 formed in a constricted portion in the middle of the bent conduit 76. When the oil supply nozzles 22 and 23 are in a horizontal state (the state shown in FIG. 10), they have a closing ball 78 made of a metal ball that moves to a position for closing the valve seat 77.

  The second opening / closing mechanism 84 is formed on the upstream side of the communication conduit 85 and a linear communication conduit 85 extending in the axial direction so as to communicate between the guide member 65 and the bending conduit 76. A spherical valve seat 87, and a closing ball 88 made of a metal ball that moves to a position for closing the valve seat 87 when the oil supply nozzles 22, 23 are directed upward (as shown in FIG. 12).

That is, since the closing balls 78 and 88 roll to a low position due to gravity, the discharge pipe portion 51e extends in the hanging direction (Ya direction) in order to insert the discharge pipe portion 51e into the oil filler opening of the plastic container 46. When the oil supply nozzles 22 and 23 are oriented vertically downward (as shown in FIG. 11), the closing balls 78 and 88 are separated from the valve seats 77 and 87 to open the air introduction pipe 72. Therefore, when the oil supply nozzles 22 and 23 are directed in the hanging direction (Ya direction), the automatic oil supply stop mechanism does not operate, and the plastic container 46 can be supplied with oil.

  At that time, the closing ball 78 of the first opening / closing mechanism 82 is prevented from dropping by the ball restricting portion 79 placed horizontally at the end of the bending conduit 76 into which the air introduction conduit 72 is inserted, and the air introduction conduit 72 is not closed. Further, the closing ball 88 of the second opening / closing mechanism 84 is prevented from falling by the ball restricting portion 89 that is horizontally mounted on the end portion of the communication conduit 85 into which the bending conduit 76 is inserted. It is designed not to close.

  In addition, when the oil supply nozzles 22 and 23 are oriented in a horizontal direction so that the discharge pipe portion 51e extends in the horizontal direction (X direction) (the state shown in FIG. 10), the closing ball 78 causes the valve seat 77 to move. The air introduction conduit 72 is shut off by closing. Therefore, in the horizontal state in which the discharge pipe portion 51e is not inserted into the oil filler opening of the plastic container 46, the above-described automatic oil supply stop mechanism is operated to automatically stop the oil supply and prevent the kerosene from being discharged to the surroundings. Can do.

  When the oil supply nozzles 22 and 23 are oriented in the vertical direction (Yb direction) so as to extend the discharge pipe portion 51e upward (the state shown in FIG. 12), the closing ball 88 causes the valve seat 87 to move. The air introduction conduit 72 is shut off by closing. Therefore, in the vertical state in which the discharge pipe portion 51e is not inserted into the oil filler opening of the plastic container 46, the above-described automatic oil supply stop mechanism is operated to automatically stop the oil supply and prevent the kerosene from being discharged to the surroundings. Can do.

  Thus, since the air introduction pipe line opening / closing mechanism 80 having the first and second opening / closing mechanisms 82 and 84 is provided in the nozzle body 50B, the fuel supply nozzles 22 and 23 are directed in the hanging direction (Ya direction). In this case (the state shown in FIG. 11), the closing balls 78 and 88 are separated from the valve seats 77 and 87, and the air introduction pipe 72 is opened to allow refueling.

However, when the oil supply nozzles 22 and 23 are oriented in directions other than the vertically downward direction (for example, the horizontal state shown in FIG. 10 and the vertical state shown in FIG. 12), that is, the oil supply nozzles 22 and 23 are connected to the oil supply port of the plastic container 46. If the refueling start switch button 42 is turned on, any of the closing balls 78 and 88 closes the valve seats 77 and 87 and shuts off the air introduction conduit 72. Therefore, it is possible to prevent the oil supply from being automatically discharged and the kerosene to be discharged to the surroundings by operating the automatic oil supply stop mechanism described above.

It is a front view which shows one Example of the fueling apparatus which becomes this invention. It is a top view of the oil supply apparatus shown in FIG. It is a side surface longitudinal cross-sectional view of the oil supply apparatus shown in FIG. It is the figure which looked at the inside of the support part 18 from the back side. FIG. 4 is a plan view for explaining the configuration of an oil supply nozzle 22. It is a side view which shows the state by which the oil supply nozzle 22 was folded by the standby position. It is a side view which shows the state by which the oil supply nozzle 22 was pulled out to the oil supply position. It is a longitudinal cross-sectional view of 50 A of nozzle bodies of Example 1 made into the horizontal state. It is a longitudinal cross-sectional view of the nozzle body 50A in a vertical state. It is a longitudinal cross-sectional view of the nozzle main body 50B of Example 2 made into the horizontal state. It is a longitudinal cross-sectional view of the nozzle body 50B in a suspended state. It is a longitudinal cross-sectional view of the nozzle body 50B in a vertical state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Oil supply device 12 Weighing machine 14, 16 Mounting stand 15 Pump 18, 20 Support part 22, 24 Oil supply nozzle 25, 27 Solenoid valve 42 Oil supply start switch button 44 Oil supply stop switch button 46 Poly container 48 Slide mechanism 51a-51d Arm 50A, 50B Nozzle body 60 Negative pressure generating part 62 Valve seat member 63 Valve body 65 Guide member 70 Liquid level detecting part 71 Liquid level detecting hole 72 Air introducing line 75 Air introducing line opening / closing mechanism 76 Bending lines 77, 87 Valve seat 78 , 88 Closing balls 79, 89 Ball restricting portion 80 Air introduction line opening / closing mechanism 82 First opening / closing mechanism 84 Second opening / closing mechanism 85 Communication line 90 Negative pressure detection line

Claims (1)

A nozzle that is inserted vertically downward into the fuel filler opening of the kerosene container;
An air introduction conduit communicating with the tip of the nozzle;
An oil supply means for supplying oil to the nozzle by an oil supply start operation;
Negative pressure generating means for generating negative pressure by refueling the nozzle;
A refueling stop means for detecting a negative pressure by the negative pressure generating means and stopping refueling when air introduction from the air introduction line is closed;
In a fueling device having
Air when the direction extending the nozzle vertically downward direction to open the air inlet pipe, when directed in a direction other than vertically downward the nozzle to shut off the air inlet pipe An introduction pipe opening / closing mechanism is provided in the nozzle,
The air introduction pipe opening / closing mechanism is
A first opening / closing mechanism that shuts off the air introduction pipe line when the nozzle is directed horizontally;
A second opening / closing mechanism that shuts off the air introduction conduit when the nozzle is directed upward;
Fueling apparatus characterized by comprising a.

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