JP2959611B2 - Valve structure of cartridge tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve structure of a cartridge tank which can open and close a valve provided in a base portion by a refueling joint attached to a tip of a refueling hose and can refuel without removing a refueling cap.

[0002]

2. Description of the Related Art After oil is supplied to a cartridge tank, if the oiling cap is not properly attached, the oiling cap is detached when the oil tank is mounted on an oil combustor or the like, causing a problem that a large amount of oil flows out at once. For this reason, there is known a structure in which a valve is pushed open by a fueling joint attached to a tip of a fueling hose without removing a fueling cap to refuel the tank. (See No. 47-42023)

In this structure, oil is supplied from a valve portion pushed and opened by a refueling joint, and the air in the tank is evacuated through the same valve portion. In addition, the valve structure is complicated and the flow path resistance is large, and the oil supply time is prolonged.If the flow rate increases, oil spray will be generated and the air passage will be closed with an oil film, causing a problem that oil supply will stop halfway. .

For this reason, the applicant has filed Japanese Patent Application No. 62-10656.
In the application of No. 2, an air valve is formed on the outer periphery, and an open / close valve is formed on the inner side, so that the refueling passage and the passage through which the air escapes are independent. A proposal has been made to prevent oil from passing through the inner passage so that oil droplets at the time of oil supply adhere to the passage to the air valve and form an oil film.

[0005]

The above structure is significant in that the oil passage and the air passage are made independent to increase the reliability of lubrication. However, the structure proposed as an embodiment has a cylindrical air passage. A valve seat is formed inside the valve. As a result, when the air valve and the on-off valve are pushed and opened by the refueling joint, a structure is required that pushes the on-off valve farther than the moving distance of the air valve. The shape of the part was complicated, and the pressing member of the on-off valve narrowed the oil passage. Therefore, there is no problem of flow resistance when a large-diameter base is attached to the cartridge tank, but the existing cartridge tank is used as it is, the outer cylinder of the valve unit is attached to the oil supply cap, and the oil supply cap is connected. When the outer cylinder is attached to the base, the refueling passage becomes narrow, and there is a problem of speeding up refueling.

[0006]

According to the present invention, an outer cylinder 3 is mounted on a base 2 of a cartridge tank 1, and an on-off valve 4 is provided in the outer cylinder 3.
And a tubular air valve 5 provided outside the on-off valve 4. The on-off valve 4 and the air valve 5 are provided with an on-off valve spring 6 and an air valve spring 7 between the outer cylinder 3. In a valve structure of a cartridge tank that closes circuit 5 and simultaneously opens and closes the on-off valve 4 and the air valve 5 by the oil supply joint 8 attached to the end of the oil supply hose, the tank 1 of the outer cylinder 3
An air hole 9 is provided on the inlet side, and the air valve 5 that slides along the inner surface of the outer cylinder 3 opens the air hole 9 and the air valve 5 and the on-off valve 4
Partition wall tube 10 with the inside of tank 1 fixed to outer tube 3 between
The valve seat 11 of the on-off valve 4 is formed inside the partition tube 10, and the end 5 a of the air valve 5 is opened and closed through an insertion gap formed between the partition tube 10 and the outer tube 3. 4 base 4a
The oil supply joint 8 presses the cylindrical air valve 5 while fitting the outer periphery of the partition tube 10, and the air valve 5
End 5a presses the on-off valve 4 via the base 4a, separates the valve seat 11 inside the partition wall tube 10 and the on-off valve 4, and supplies oil from the refueling joint 8 into the tank 1.

[0007]

With the above construction, the valve seat 11 of the on-off valve 4 does not move integrally with the outer cylinder 3 and the on-off valve 4 is pushed and opened together by the end 5a of the air valve 5. There is no member for opening and closing the on-off valve 4 in the flow path, and the lubrication is performed smoothly.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 1 is a cartridge tank, 2 is a base of the tank 1 and 3 is an outer cylinder mounted on the base 2.
Is fixed to a refueling cap 12 which is attached to and detached from the base 2,
By attaching the refueling cap 12 to the base 2,
The base 2 and the outer cylinder 3 are integrated.

Reference numeral 4 denotes an opening / closing valve provided at the center of the outer cylinder 3, 5 denotes a cylindrical air valve which slides in contact with the inner wall of the outer cylinder 3, and 10 denotes a position between the opening / closing valve 4 and the cylindrical air valve 5. A bulkhead cylinder located at
The partition tube 10 and the outer tube 3 form a gap through which the cylindrical air valve 5 is inserted. Further, a protrusion 10a is formed at an end of the partition tube 10 on the inner side of the tank 1, and the protrusion 10a is
Of the outer cylinder 3 by fitting into the mounting holes of the outer cylinder 3
Fixed to.

Reference numeral 5a denotes an end of the air valve 5 extending a plurality of portions inwardly of the tank 1 while avoiding the projection 10a of the partition tube 10, and 4a denotes a cylindrical portion formed on the inside of the tank 1 of the on-off valve 4. A base 11 is a valve seat formed inside the partition tube 10. The cylindrical base 4a of the on-off valve 4 slides along the inner surface of the outer cylinder 3, and the on-off valve 4 comes into contact with and separates from the valve seat 11. I do. The end 5a of the air valve 5 is in contact with the base 4a of the on-off valve 4, and when the air valve 5 slides, the on-off valve 4 can move through the end 5a and the base 4a.

Reference numeral 9 denotes an air hole provided on the inlet side of the outer cylinder 3, which opens and closes when the air valve 5 slides along the outer cylinder 3.
Reference numeral 6 denotes an on-off valve spring located between the base 4b of the on-off valve 4 and the end of the outer cylinder 3, and 7 denotes an air valve located between the partition cylinder 10 integrated with the outer cylinder 3 and the air valve 5. The on-off valve 4 pressed by the on-off valve spring 6 abuts on the valve seat 11,
The air valve 5 pushed by the air valve spring 6 has an air hole 9.
It moves further to the inlet side to close each flow path.

Numeral 13 denotes a tip of a refueling hose, 8 denotes a refueling joint attached to the tip 13 of the refueling hose, and an inner diameter of the tip of the refueling joint 8 is set to be larger than an outer diameter of the partition tube 10. When the partition pipe 10 is fitted with the partition pipe 10, the tip of the oil supply joint 8 presses the air valve 5 to open the air hole 9, and at the same time, the end 5a of the air valve 5
Is pressed to separate it from the valve seat 11. Therefore, the oil sent from the tip 13 of the oil supply hose passes through the gap between the valve seat 11 and the on-off valve 4 through the inside of the partition tube 10 and from the outlet 3a of the outer tube 3 or the through hole 4b of the base 4a to the tank 1 Supplied within. Further, the air in the tank 1 flows out from the air hole 9 through the gap between the outer cylinder 3 and the oil supply joint 8.

If the locking projection 10b is provided between the partition wall cylinder 10 and the refueling joint 8, both parts can be held in a fitted state, and the operator can refuel the refueling joint 8 when refueling. There is no need to continue pressing against the partition tube 10.

FIG. 2 shows the cartridge tank 1 on which the valve structure according to the present invention is mounted, after which the tank 1 is turned over and looked into the receiving tray 14, and both valves 4 and 5 are opened and closed by valve springs 6 respectively. And the air valve spring 7 keeps the circuit closed. FIG. 3 shows a state in which the tank 1 is mounted on the pan 14. The protrusion 15 of the pan 14 contacts the on-off valve 4 to compress the on-off valve spring 6, and the on-off valve 4 moves away from the valve seat 11. The oil in 1 flows out to the tray 14.

[0015]

As described above, according to the present invention, the partition tube 10 integrated with the outer cylinder 3 is provided between the on-off valve 4 and the air valve 5, and the valve seat 11 is formed in the partition tube 10. The distance between the open / close valve 4 and the air valve 5 that moves to open is substantially the same, and the lubricating joint 8 operates the air valve 5 directly only to open / close the open / close valve 4.
Was able to open. This eliminates the need for the conventional lubricating joint 8 to open and close the on-off valve 4 and eliminates any obstruction to the oil flow path. Can be captured.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part during refueling a cartridge tank having a valve structure according to the present invention.

FIG. 2 is a cross-sectional view of a main part in which a cartridge tank having a valve structure according to the present invention has been rolled and viewed from a tray.

FIG. 3 is a sectional view of a main part in which a cartridge tank having a valve structure according to the present invention is mounted on a tray.

FIG. 4 is a sectional view of a main part showing a state where the cartridge tank is mounted on an oil combustor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cartridge tank 2 Base 3 Outer cylinder 4 On-off valve 4a Base of on-off valve 5 Air valve 5a End of air valve 6 On-off valve spring 7 Air valve spring 8 Oil supply joint 9 Air hole 10 Partition tube 11 Valve seat

Claims (1)

(57) [Claims] An outer cylinder is attached to a base of a cartridge tank.
And an on-off valve 4 is provided inside the outer cylinder 3 and a cylindrical air valve 5 is provided outside the on-off valve 4. The on-off valve 4 and the air valve 5 are disposed between the outer cylinder 3 and an on-off valve spring 6. And an air valve spring 7 to close both valves 4 and 5, and an on-off valve 4 and an air valve 5 by an oil supply joint 8 attached to the end of an oil supply hose.
In the valve structure of the cartridge tank, which simultaneously opens and supplies oil, an air hole 9 is provided on the tank 1 inlet side of the outer cylinder 3, and the air valve 5 that slides along the inner surface of the outer cylinder 3 opens the air hole 9. A partition pipe 10 having the inside of the tank 1 fixed to the outer cylinder 3 is provided between the air valve 5 and the on-off valve 4, and a valve seat 11 of the on-off valve 4 is formed inside the partition pipe 10, and The end 5a of the air valve 5 is brought into contact with the base 4a of the on-off valve 4 through an insertion gap formed between the partition tube 10 and the outer tube 3, and
Presses the cylindrical air valve 5 while fitting on the outer periphery of the partition tube 10, and the end 5 a of the air valve 5 presses the opening / closing valve 4 via the base 4 a, and the valve seat inside the partition tube 10. 11 and on-off valve 4
And a valve structure of a cartridge tank for supplying oil flowing in the oil supply joint 8 into the tank 1 by separating the oil supply tank 8 from the oil supply joint 8.