JPH09222100A - Fluid supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the remaining amount of a fluid in a canister or a filtering means and improve supplying efficiency so as to provide a compact and light- weight device by laying a supply tube communicated with a pressure air source in a canister and disposing the pressure air source and the filtering means separately from each other. SOLUTION: The downstream part of a supply tube 26 made of metal is disposed in a first liquid feeding tube 5 positioned in an upper end in a canister 3, this supply tube 26 is laid from the outside of the canister 3 and its outlet end is opened in the canister 3. A connection part for the first liquid feeding tube 5 is tightly welded and the upstream side end part of the supply tube 26 is connected to a pressure air source 27. The first liquid feeding tube 5 is protruded to the upper side of the canister 3, one end of a second liquid feeding tube 32 is connected to this protruded end part and the other end thereof is connected to a filter 33 used as a filtering means. Thus, compared with a supply method by a draw-up pump, the remaining amount of a fluid in the canister 3 or the filter 33 is reduced and supply efficiency is increased. Also, since the pressure air source 27 and the filter 33 are separated from each other, the device is made compact and miniaturized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid supply device which is small and lightweight, easy to handle, and capable of improving supply efficiency and ensuring safety in use.

[0002]

2. Description of the Related Art Generally, a helicopter is prepared for an emergency,
It is equipped with a fuel supply system. This fuel supply device is composed of an engine-driven pumping pump and an oil filter, and these are carried out to a refueling place at the time of fuel supply and installed, and a drum containing fuel is transported to the refueling place, The fuel was pumped up by the pump and refueled in a helicopter.

However, in this conventional fuel supply device, since the pumping pump and the oil filter are integrally formed, the weight becomes large and the handling such as transportation and storage is inconvenient, and the fuel is heated by the engine. It was dangerous because it could catch fire or catch fire. Further, in the method of supplying by a pump, when air enters the pumping section, it becomes impossible to refuel, and unpumped fuel remains at the bottom of the drum, or a large amount of fuel remains in the oil filter, There was a problem that supply efficiency was generally poor.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem, is compact and lightweight, is easy to handle, and is capable of improving supply efficiency and ensuring safety in use. The purpose is to provide.

[0005]

Therefore, the invention of claim 1 is provided with a container containing a fluid, a filtering means for filtering the fluid, and a liquid feed pipe communicating the container with the filtering means. In the fluid supply device, an air supply pipe communicating with a pressurized air source is provided inside the container, and the pressurized air source and the filtering means are separately arranged, and the fluid in the container is pushed out by air pressure, In addition to reducing the amount of fluid remaining in the filtration means and improving the supply efficiency of the fluid, the separation structure is intended to reduce the size and weight of this type of device and make it easier to handle. According to the invention of claim 2, the downstream portion of the air supply pipe is arranged inside and outside the upper end portion of the container in the liquid supply pipe so as to avoid the trouble of constructing the air supply pipe independently in the container and the complication of the structure. I have to. According to the third aspect of the present invention, the filtering means is detachably provided inside the liquid supply pipe, and the means is downsized and lightened to enhance the downsizing and the convenience of handling of this type of device. According to the invention of claim 4, the fluid is liquid fuel and the supply efficiency thereof is improved to prevent the fuel from being wasted. According to a fifth aspect of the present invention, the pressurized air source is an engine-driven air compressor, which prevents ignition and ignition of fuel due to heating of the engine, as in the conventional engine-driven pumping pump, and the engine and the filter. Are arranged apart from each other to prevent the accident from occurring and to ensure the safety in use of this type of device. According to a sixth aspect of the present invention, there is provided a fluid supply device provided with a container containing a fluid, a filtering means for filtering the fluid, and a liquid sending pipe communicating the container with the filtering means. A chucking device is attached to the liquid pipe, and the device is detachably attached to the rim portion of the liquid supply port of the container so that the liquid supply pipe can be easily fixed to the container via the chucking device. According to a seventh aspect of the present invention, a pair of detachable chuck claws are provided on the outer edge of the liquid supply port so as to be displaceable inward and outward on the outside of the liquid supply pipe, and one end of these chuck claws is rotatably connected. , One end of the support lever is rotatably connected to one chuck claw, the other chuck claw is provided with a cam engageable with the support lever, and a pair of chuck claws are supplied by turning the support lever. It engages with the rim of the mouth so that the feeding tube can be chucked by one-touch operation.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a description will be given of an illustrated embodiment in which the present invention is applied to a fuel supply device for a helicopter. In FIGS. 1 to 5, reference numeral 1 is a work floor surface which is an outdoor fueling area, and concrete is It is cast and formed on a flat surface,
A container 3 such as a drum can containing a helicopter fuel 2 as a supply fluid is installed on the floor surface 1.

A liquid supply port 4 is provided at the upper end of the container 3, and a first liquid supply pipe 5 longer than the height of the container 3 is inserted into the port 4. A mouthpiece 6 into which a cap (not shown) can be screwed is projectingly provided at an opening edge portion of the liquid supply port 4, and a chucking device 7 is attached to the mouthpiece 6.

The chucking device 7 is provided with a pair of chuck claws 8 and 9 and a chucking inner 10 arranged inside them, and the chuck claws 8 and 9 are formed by dividing a substantially cylindrical ring in two. Further, arcuate engagement surfaces 8a and 9a are formed on the inner side of the upper end portions thereof, and these can be engaged with the peripheral surface of the first liquid supply pipe 5.

One ends of the chuck claws 8 and 9 are rotatably connected via a hinge 11, and the bracket 1 is attached to the outer peripheral surface thereof.
2 and the cam 13 are provided so as to be spaced apart from each other, and the bracket 12
One end of the support lever 15 is rotatably connected to the pin via a pin 14.

The support lever 15 includes chuck claws 8 and 9.
A groove 16 capable of receiving the cam 13 is formed therein, and a roller 17 as a locking portion is rotatably supported in the inner portion of the groove 16. There is. The cam 13 is provided on the peripheral surface of the chuck claw 9 on the tip side,
This is composed of a substantially mountain-shaped plate body, and an arc-shaped concave portion 13a is formed on one side of the base end portion thereof, and a roller 17 is disposed in the concave portion 13a so that the roller 17 can engage with the concave portion 13a.

In the figure, reference numeral 18 is a lever handle projecting from the other end of the support lever 15, and a grip portion 19 is provided at the tip thereof.

At the same position on the inner surface of the chuck claws 7 and 8,
Recessed portion 20 engageable with the peripheral surface of the chucking inner 10
Are formed, and upward and downward taper surfaces 21 and 22 are formed at the upper and lower ends thereof so that the upper taper surface 21 can be engaged with the peripheral surface of the chucking inner 10 and the lower taper surface 22 is formed into the mouthpiece 6. It can be engaged with the edge portion of the.

A through hole 23 into which the first liquid supply pipe 5 can be inserted is formed inside the chucking inner 10, and the inner 10 is welded to the first liquid supply pipe 5 directly above the container 3. A taper surface 24 that can be engaged with the taper surface 21 on the outer peripheral surface
Is formed. In addition, at the lower end of the inner 10
A thick seal packing 25 made of an elastic member such as rubber is adhered and adheres to the base 6 at the time of chucking to make the space between them liquid-tight.

The first liquid delivery pipe 5 located at the upper end of the container 3
Inside, a downstream portion of a metal air supply pipe 26 is piped, the pipe 26 is piped from the outside of the container 3, and a discharge end portion thereof is opened in the container 3 to the first liquid supply pipe 5. The joint is welded in an airtight manner, and the upstream end of the pipe 26 is connected to the pressurized air source 27.

The pressurized air source 27 is a drive source for the engine 2.
8 and an air compressor 29 driven by the engine 28, the engine 28 is provided with a starting recoil starter 30, and the compressor 2
A pressure gauge 31 is attached to 9, and the air supply pipe 26 is connected to the discharge port thereof.

The first liquid feed pipe 5 projects above the container 3, and one end of a second liquid feed pipe 32 made of metal is connected to the projecting end.
The other end is connected to a filter 33 which is a filtering means. The filter 33 is a transparent or translucent tubular body 34.
And a filter material 35 provided inside the main body 34, and one end of a metal supply pipe 36 is connected to the discharge port of the main body 34.
A liquid supply nozzle 37 is attached to the other end of 6, and the nozzle 37 is connected to a fuel supply port 38 of a helicopter which is a fuel supply side.
It can be inserted into. In the figure, 39 is a metering valve provided in the nozzle 37, 40 is a gantry on which the engine 28 and the pump 29 are installed, to which a carrying frame 41 is attached.

Although an engine-driven air compressor 29 is used as the pressurized air source 27, an electric compressor 29 may be used in place of the above-mentioned drive type if a power source can be secured at a fueling site. This is possible, and by doing so, it is possible to reduce the size and weight of this type of pump 29 and to facilitate the operation. Further, instead of the filter 33, it is downsized, or only the filter medium is used for the first or second filter.
If it is replaceably attached to the appropriate position in the liquid delivery pipes 5, 32, the large filter 33 can be omitted, and the structure can be simplified and the device can be made compact accordingly.

In the fluid supply device thus constructed, the air compressor 29 for supplying the compressed air and the filter 33 for inflowing and outflowing the fuel are separated from each other.
Compared with the one in which these are integrated, the size and weight of the device can be reduced and the handling can be facilitated, and the device is suitable for a helicopter equipped with these.

Further, since the engine 28 is used to drive the air compressor 29, even if the engine 28 is heated, it does not directly ignite or ignite the fuel, and due to the above-mentioned separation structure, the engine 28 is to be described later.
Since the filter 33 and the filter 33 can be installed separately from each other, the ignition and ignition of the fuel can be prevented, and the safety in use can be ensured.

Next, when supplying fuel to the helicopter using the above apparatus, land the helicopter on the fueling point,
While the fuel supply is on standby, the container 3 containing the fuel 2 is transported to the refueling place by an automobile or the like, and is installed on the work floor 1. And the engine 2 installed in the helicopter
8, the air compressor 29, the filter 33, the chucking device 7 integrated with the first liquid supply pipe 5, the air supply pipe 26, the second liquid supply pipe 32, the liquid supply pipe 36, etc. are carried out of the machine, and the air compressor 29 The filter 33 and the filter 33 are separately installed at appropriate positions on the work floor surface 1, and these are connected by respective pipes.

That is, the upstream end of the air supply pipe 26 is connected to the discharge portion of the air compressor 29, the downstream end of the second liquid feeding pipe 32 is connected to the inlet of the filter 33, and the filter is connected. The upstream end of the liquid supply pipe 36 is connected to the discharge port 33, and the downstream liquid supply nozzle 37 is inserted into the oil supply port 38. Before and after the above work, the cap (not shown) of the container 3 is removed, the first liquid delivery pipe 5 is inserted into the liquid supply port 4, and the chucking device 7 attached to the pipe 5 is positioned on the mouthpiece 6. .

This situation is as shown in FIG. 4, in which the lever handle 18 is pivotally displaced outward, that is, the cam 13 and the roller 1
7 disengages, and the engaging surfaces 8a of the chuck claws 8 and 9,
9a are separated as shown in FIG. Further, the chucking device 7 releases the chuck operation, the upper ends of the chuck claws 8 and 9 are locked to the upper end of the chucking inner 10, and the taper surface 22 in the lower end contacts the outer peripheral surface of the base 6. doing.

When the fuel 2 is supplied under such a condition, the lever handle 18 is rotated to the first liquid feeding pipe 5 side with the pin 14 as a fulcrum, and the roller 17 is moved to the concave portion 13 of the cam 13.
a. By doing so, the tips of the chuck claws 9 are pulled toward the chuck claws 8 side, the tips are closely engaged, and the chuck claws 8 and 9 move inward so that the engaging surfaces 8a and 9a are It comes into close contact with the first liquid delivery pipe 5.

Then, the moving amount of the chuck claws 8 and 9 inside,
The tapered surface 21 is the tapered surface 2 of the chucking inner 10.
4, the chuck claws 8 and 9 move directly above the inner member 10. Further, the taper surface 22 moves below the rim portion of the mouthpiece 6, the chuck claws 8 and 9 are strongly hooked to the mouthpiece 6, and at that time, the seal packing 25 is pressed and contracted to be closely attached to the mouthpiece 6. The liquid-tightness of the part is formed.

As described above, according to the present invention, the lever handle 18 is provided.
The first liquid supply pipe 5 can be easily fixed to the container 3 by a one-touch operation according to, and the complicated screwing work of the cap as in the past is not required.

Thereafter, the metering valve 39 is opened, the recoil starter 30 is driven to start the engine 28, and the air compressor 29 is driven to supply compressed air to the air supply pipe 2.
Send to 6. In this way, compressed air is discharged from the upper end of the container 3, the pressure in the container 3 rises, and the fuel 2 is pushed out to the first liquid delivery pipe 5, which rises in the pipe 5 2 Move to the liquid delivery pipe 32. Then, the fuel 2 is guided to the filter 33 through the second liquid supply pipe 32, and after foreign substances in the oil are removed and cleaned by the filter 33, the fuel 2 is guided to the air supply pipe 36 and injected into the oil supply port 38.

When the fuel 2 is supplied in this manner, the liquid level in the container 3 gradually descends and reaches the bottom of the container 3. In the present invention, however, compressed air is sent into the container 3 to push out the fuel 2. The above liquid level fluctuates and the first
Even if air temporarily enters the lower end portion of the liquid supply pipe 5, the supply action is not hindered and the supply is not impossible unlike the conventional suction pump system. Therefore, even a small amount of the fuel 2 staying at the bottom of the container 3 can be supplied, and the remaining amount of the part can be reduced.

When the fuel 2 in the container 3 is substantially supplied, the compressed air flows from the first liquid feeding pipe 5 to the second liquid feeding pipe 3.
After passing through 2, the fuel 2 flows into the filter 33, and the fuel 2 in the filter 33 is pushed out to the liquid supply pipe 36. Therefore, unlike the conventional suction pump system, there is no problem that a large amount of fuel remains in the filter, and the remaining amount of the fuel 2 in the filter 33 is significantly reduced.
As a result, the supply efficiency of the fuel 2 is improved in combination with the above.

Since the main body 34 of the filter 33 is transparent or translucent, the degree of contamination of the filter medium 35 can be visually recognized from the outside and the replacement can be appropriately performed. Further, in the embodiment, the fluid is applied to the liquid fuel, but the present invention is not limited to this, and may be applied to water, a chemical solution, a drinking solution, or the like.

[0030]

As described above, according to the first aspect of the present invention, the air supply pipe communicating with the pressurized air source is provided in the container, and the fluid in the container is pushed out by the air pressure and supplied. Compared with the method of supplying by the pumping pump of No. 3, it is possible to reduce the residual of the fluid in the container and the filtering means and improve the supply efficiency. Further, since the pressurized air source and the filtering means are separately arranged, the apparatus of this kind can be made compact and lightweight and the handling thereof can be facilitated, and there is an effect suitable for mounting on a helicopter which is strict with these regulations. According to the invention of claim 2, the downstream portion of the air supply pipe is arranged inside and outside the upper end portion of the container in the liquid delivery pipe. The complexity of the structure can be avoided. According to the third aspect of the present invention, since the filtering means is detachably provided inside the liquid supply pipe, the means is small and lightweight, and the size and weight of this type of device and convenience of handling can be improved. According to the invention of claim 4, since the fluid is liquid fuel,
Fuel costs can be reduced by improving the supply efficiency. According to the invention of claim 5, since the pressurized air source is the engine-driven air compressor, it is possible to prevent ignition and ignition of fuel due to heating of the engine, as in the conventional engine-driven pumping pump, and By disposing the filter away from the filter, the occurrence of the accident can be prevented and the safety in use of this type of device can be ensured. In the invention of claim 6, the chucking device is attached to the liquid supply pipe located outside the container, and the device is detachably attached to the rim portion of the liquid supply port of the container. The liquid feeding pipe can be easily fixed to the container, and the conventional complicated screwing operation can be eliminated. According to a seventh aspect of the present invention, a pair of detachable chuck claws are provided on the outer edge of the liquid supply port so as to be displaceable inward and outward on the outside of the liquid supply pipe, and one end of these chuck claws is rotatably connected. Since one end of the support lever is rotatably connected to one chuck claw, and the other chuck claw is provided with a cam that can be engaged with the support lever, a pair of chuck claws are fed by rotating the support lever. The liquid feed pipe can be chucked by one-touch operation by engaging with the edge portion of the liquid port.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, showing a fluid supply state.

FIG. 2 is a plan view showing an example of a chucking device applied to the present invention, showing a chucking state thereof.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, showing a slightly enlarged view.

FIG. 4 is a cross-sectional view taken along the line BB of FIG. 2, showing a slightly enlarged view.

5 is a cross-sectional view taken along the line BB of FIG. 2, showing the chucking release state slightly enlarged.

[Explanation of symbols]

 2 Fluid (fuel) 3 Container 5,32 Liquid supply pipe (first and second liquid supply pipe) 7 Chucking device 8,9 Chuck claw 13 Cam 15 Support lever 27 Pressurized air source (air compressor) 33 Filtration means ( (Filter)

Claims (7)

[Claims] 1. A fluid supply device comprising a container containing a fluid, a filtering means for filtering the fluid, and a liquid feed pipe communicating the container and the filtering means, and an air supply pipe communicating with a pressurized air source. A fluid supply device in which the pressurized air source and the filtering means are separately arranged. 2. The fluid supply apparatus according to claim 1, wherein the downstream portion of the air supply pipe is arranged inside and outside the upper end portion of the container and inside the liquid supply pipe. 3. The fluid supply device according to claim 1, wherein a filtration means is detachably provided inside the liquid supply pipe. 4. The fluid supply device according to claim 1, wherein the fluid is liquid fuel. 5. The fluid supply device according to claim 4, wherein the pressurized air source is an engine-driven air compressor. 6. A fluid supply device provided with a container containing a fluid, a filtering means for filtering the fluid, and a liquid delivery pipe communicating the container with the filtering means, wherein the liquid delivery pipe is located outside the container. A fluid supply device in which a chucking device is attached to the container and the device can be attached to and detached from the rim of the liquid supply port of the container. 7. A pair of detachable chuck claws are provided on the outer edge of the liquid supply port so as to be displaceable inward and outward on the outside of the liquid feed pipe, and one end of these chuck claws is rotatably connected to one another. 7. The fluid supply device according to claim 6, wherein an end portion of the support lever is rotatably connected to the chuck claw, and a cam engageable with the support lever is provided on the other chuck claw.