JPH0590136U - Cartridge tank valve structure - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the valve structure is to minimize the amount of liquid remaining in the tank in the valve structure that prevents failure of liquid spillage caused by forgetting to put on the cap of the cartridge tank or mistakenly putting it on. To do. [Structure] In a cartridge tank 1 in which a cap 5 with a screw is screwed into a base 2 of a tank 1, a cylinder body 6 to be inserted into the tank 1 is fitted into the base body 2, and a valve seat 7 is inserted in the cylinder body 2.
And the on-off valve 8 are provided, and a valve structure is formed above and below the on-off valve 8 for passing and stopping the liquid in the tank 1. The abutting surface of the valve seat 7 that is in close contact with the on-off valve is formed by the inclined surface 7a, and a part of the valve seat 7 of the inclined surface 7a is located in the base 2, and
The liquid 9 in the tank 1 can also flow out to the lowermost part of the inclined surface 7a by opening the through hole 9 in the barrel 2 through which the liquid flows, and the liquid remaining in the tank 1 can be discharged. The amount is minimal

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a valve structure that does not spill contents even when the cap of a cartridge tank that uses a cap equipped with a valve inside falls off.

[0002]

[Prior Art]

 For the cartridge tank, remove the cap to replenish liquid fuel such as kerosene, tighten the cap and carry it, and reversely mount it on the saucer such as an oil combustor to open the valve equipped on the cap to supply liquid fuel. It is a thing.

At this time, if the cap is not tightly tightened, the cap will come off when the cartridge tank is reversed, and the liquid in the cartridge tank will flow out all at once. In order to prevent this trouble, an opening / closing valve that constitutes the second valve is attached to the mouth of the cartridge tank, and even if the cap comes off, the on-off valve attached to the mouth closes and the structure that stops the flow of liquid is actually opened. It is known as in Sho 55-171847.

The Applicant has provided a tubular body having an appropriate depth inside the mouthpiece so as to provide a structure in which the tip of the hose pump can be easily inserted, which is convenient for refueling even if there is an on-off valve. Japanese Patent Application Nos. 62-101064, 62-132835, etc. have been proposed for a valve structure having an opening / closing valve that is slidable in the cylinder.

[0005]

[Problems to be solved by the device]

 Among the above-mentioned prior arts, the applicant has already proposed a valve structure in which a tubular body is provided inside the mouthpiece and an opening / closing valve is slidable inside the tubular body. There is a problem that the liquid inevitably remains in the cartridge tank on the base side of the valve. For this reason, the cylinder with the on-off valve is made detachable, and the liquid is drained from the cartridge tank by removing the cylinder, but if the cylinder is removed, the cylinder must be attached. If you forget it, an accident will occur in case of accident, so removing the cylinder was not a preferable measure.

Further, if the liquid remains in the cartridge tank and the oil combustor goes through the off-season, the remaining liquid will be deteriorated, which may cause an unexpected trouble at the beginning of use in the next season. is there. Therefore, it is desirable to have a structure in which the liquid does not remain in the cartridge tank as much as possible.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention uses the mouthpiece and cap of the conventional cartridge tank as they are, and attaches a cylinder body with a devised shape of the on-off valve and valve seat to keep the liquid remaining in the cartridge tank as much as possible. It is a small amount.

That is, a cap 5 having a valve 3 and a valve holding cylinder 4 is detachably attached to a mouthpiece 2 of a cartridge tank 1, and a cylinder body 6 located in the cartridge tank 1 is attached to the mouthpiece 2. A valve seat 7 is formed on the inner wall of the valve 6, and an on-off valve 8 which is in close contact with the valve seat 7 facing the valve seat 7 is slidably accommodated in the tube 6 and is passed through the tube 6 inside the valve seat 7. When the mouth 9 is formed and the valve shaft 3a of the valve 3 and the opening / closing valve 8 face each other and the cartridge tank 1 is reversed and mounted on the tray 10, the opening / closing valve 8 is opened by the valve shaft 3a of the valve 3 that is pushed up. In the cartridge tank in which the valve seat 7 and the opening / closing valve 8 are pushed up and separated from each other, the valve seat 7 to which the opening / closing valve 8 closely contacts is formed by the inclined surface 7a, and a part of the valve seat 7 of the inclined surface 7a is in the base 2. And the through-hole 9 is also opened in the base 2. This is a tank valve structure.

Further, at least one through hole 9 of the tubular body 6 is constituted by a long hole along the moving direction of the on-off valve 8, and a plurality of protrusions 8b facing the through hole 9 at appropriate positions on the outer circumference of the on-off valve 8. With the provision, the protrusion 8b serves as a stopper to prevent the on-off valve 8 from rotating laterally, and the on-off valve 8 can be slid straight up and down in the cylindrical body 6.

[0010]

The cylinder body 6 of the present invention having the above-mentioned configuration is fitted in the tip opening of the mouthpiece 2, and the cartridge tank 1 is set up with the mouthpiece 2 facing upward and the cap 5 is removed. When the tip pipe of the hose pump is inserted inward from the end opening, the opening / closing valve 8 is lowered to the inner part of the cylinder body 6, and the liquid injected from the hose pump passes through the through port 9 and the cartridge tank 1 It is poured into the inside.

On the other hand, if the cap 5 is attached to the base 2 after the liquid is injected, the valve 3 of the cap 5 is closed, so that the cartridge tank 1 can be sealed. Therefore, even if the cartridge tank 1 is reversed, the valve 3 remains closed, the open / close valve 8 remains in close contact with the inclined surface 7a of the valve seat 7, and the cartridge tank 1 is mounted on the tray 10 in the reversed state. When worn, the valve 3 is pushed open.

When the valve 3 is opened, the on-off valve 8 is also separated from the valve seat 7 by the valve shaft 3a and opens, so that the liquid in the cartridge tank 1 enters the cylinder 6 from the through hole 9 and is further opened. The required amount from the valve 3 to the tray 10 side is replenished.

At this time, if the cap 5 is removed while the cartridge tank 1 is reversed, the on-off valve 8 is in close contact with the valve seat 7, so that the liquid flow path to the tip opening of the base 2 is closed. The liquid in the cartridge tank 1 does not flow out even if the cap 5 is removed.

[0014]

【Example】

 The structure of the cartridge tank used in the oil combustor will be described below with reference to 1 a tank of the cartridge tank, 2 a cap with a screw provided on one side of the cartridge tank 1, and 5 a cap 2. It is a cap with a screw to be screwed, and a valve holding cylinder 4 is extended inside the cap 5 toward the inside of the cap 2, a valve 3 is attached to the valve holding cylinder 4, and the valve 3 is pushed open. Thus, the inside and outside of the cap 5 are communicated with each other.

Reference numeral 3a denotes a valve shaft projecting from the valve 3 in the valve holding cylinder 4, 3b denotes a valve spring, the valve 3 is pushed by the valve spring 3b, and the valve holding cylinder 4 guides the vertical movement. Reference numeral 6 denotes a cylindrical body having a diameter slightly smaller than that of the tip end opening of the mouthpiece 2 of the cartridge tank 1 and a long length, which is made of an oil-resistant plastic material, and the flange 6a at the tip of the cylinder body 6 has a mouthpiece. Stick tightly to the tip opening of 2. Reference numeral 7 denotes a valve seat provided on the inner wall of the cylindrical body 6 near the base 2, and may be integrated with the cylindrical body 6 or may be a separate body. The valve seat 7 is provided horizontally in the conventional example shown in FIG. 3, but in the present invention, it is a valve seat having an inclined surface 7a, and a part of the valve seat 7 of the inclined surface 7a is located inside the base 2.

Reference numeral 8 denotes an opening / closing valve that slides up and down in the cylindrical body 6, and the opening of the opening / closing valve 8 in the direction of the mouthpiece 2 is the inclined surface 8a of the valve shaft 3a. A plurality of rows 9 are provided in the cylindrical body 6 inward of the valve seat 7, and the openings 9 are also opened in the base 2 in the vicinity of the inclined surface 7a of the valve seat 7. It is preferable that the passage 9 has a width that allows the tip of the hose pump to be inserted, and at least one of the passages 9 is a long hole along the moving direction of the on-off valve 8. 8b is a protrusion provided from a proper position of the on-off valve 8 toward the passage 9, and one protrusion having a size that fits the lateral width of the passage 9 is provided, or two or more are provided depending on the width of the passage 9. The opening / closing valve 8 is provided so as to prevent the opening / closing valve 8 from rotating laterally, and the opening / closing valve 8 and the valve seat 7 always come into contact with and separate from each other at the same position.

Reference numeral 11 is a spring provided between the stopper 6 b provided at the upper end of the tubular body 6 and the opening / closing valve 8, 12 is a weight provided inside the opening / closing valve 8, and the opening / closing valve 8 is a pressing force of the spring 11. When the cartridge tank 1 is set up for liquid supply and the mouthpiece 2 is directed upwards, the force of the weight 12 compresses the spring 11 so that the on-off valve 8 is opened and closed. Separates from the valve seat 7. Therefore, when the liquid is injected by a hose pump or the like, the liquid smoothly flows into the tank 1.

Further, when the tank 1 is reversed and the cap 2 is lowered, the opening / closing valve 8 is pressed against the valve seat 7 by the extension force of the spring 11 and the gravity of the weight 12 to close the valve, and the cap 5 is removed. , Liquid does not spill.

Reference numeral 10 is a saucer of an oil combustor, and 10a is a push-up pin provided in the saucer 10. When the tank 1 is reversed and the mouthpiece 2 is placed on the saucer 10 downward, the pin 10a pushes up the valve 3. The valve shaft 3a pushes up the open / close valve 8 and pulls it away from the valve seat 7, so that the liquid in the tank 1 flows out into the tray 10.

[0020]

[Effect of the device]

 The present invention has the above-described structure and operation. Even if the cap 5 comes off from the mouthpiece 2 of the cartridge tank 1 due to forgetting to tighten it, the liquid in the cartridge tank 1 does not flow out and prevents spillage. The first purpose of doing so is to maintain it as before.

Although a hose pump is normally used to inject liquid into the cartridge tank 1 of this type, in order to prevent the liquid from splattering at the time of injecting liquid, the on-off valve 8 is provided with the tubular body 6 when the tank 1 is set up. It is better to go deep inside, and the tubular body 6 is required to have a certain length, and since the valve 3 of the cap 5 is placed in the base 2, the on-off valve 8 is formed in the long tubular body 6 in the tank 1. To be done. Since the tank 1 is used by reversing it and mounting it on the tray 10, it is necessary to drain all the liquid in the tank 1 in order to accommodate the use in the off season in the conventional configuration. It is impossible because it is within 1.

In the present invention, the contact surface between the valve seat 7 and the opening / closing valve 8 is the inclined surface 7a, and a part of the valve seat 7 of the inclined surface 7a is located in the mouthpiece 2 and the through hole 9 is also in the mouthpiece 2. As shown in FIG. 1, the lowermost part of the inclined surface 7a of the valve seat 7 is close to the open end of the mouthpiece 2. Therefore, the residual liquid has the minimum amount as shown by the diagonal line in FIG. It can be reduced to about one tenth of the residual liquid (Fig. 3), and there is almost no concern about deterioration due to residual liquid.

Further, if a protrusion 8b is provided at a proper position on the outer periphery of the on-off valve 8 toward the passage 9, the protrusion 8b comes into close contact with the inner side surface of the passage 9 and stops the lateral rotation of the on-off valve 8. The on-off valve 8 and the inclined surface 7a of the valve seat 7 are not always displaced, so that the valve seat 7 and the open valve 8 are firmly brought into close contact with each other to maintain liquid tightness.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a state in which a cartridge tank having the valve structure of the present invention is mounted on a tray.

FIG. 2 is a sectional view of an essential part of a cartridge tank having the valve structure of the present invention.

FIG. 3 is a cross-sectional view of essential parts in a state in which a cartridge tank having a valve structure of a conventional example is mounted on a tray.

[Explanation of symbols]

 1 Tank 2 Base 3 Valve 3a Valve Shaft 4 Valve Holding Tube 5 Cap 6 Cylindrical Body 7 Valve Seat 7a Sloping Surface 8 Opening / Closing Valve 8b Projection 9 Through Port 10 Saucepan

Claims (2)

[Scope of utility model registration request] 1. A cap 5 having a valve 3 and a valve holding cylinder 4 is detachably attached to a mouthpiece 2 of a cartridge tank 1, and a cylinder body 6 located in the cartridge tank 1 is attached to the mouthpiece 2. The valve seat 7 is formed on the inner wall of 6,
Further, the on-off valve 8 which is in close contact with the valve seat 7 and is in close contact with the valve body 7 is slidably accommodated in the tubular body 6, and the through hole 9 is formed in the tubular body 6 inside the valve seat 7, and the valve shaft of the valve 3 is formed. 3a and the on-off valve 8 face each other,
When the cartridge tank 1 is reversed and mounted on the tray 10, the valve shaft 3a of the valve 3 that is pushed up pushes up the open / close valve 8, and the valve seat 7 and the open / close valve 8 are separated from each other. The valve seat 7 to the inclined surface 7
A valve structure of a cartridge tank in which a part of the valve seat 7 of the inclined surface 7a is located in the mouthpiece 2 and the through hole 9 is also opened in the mouthpiece 2. 2. At least one through hole 9 of the cylindrical body 6 is constituted by a long hole along the moving direction of the on-off valve 8, and a plurality of protrusions 8b facing the through hole 9 at appropriate positions on the outer periphery of the on-off valve 8. And the protrusion 8
2. The valve structure for a cartridge tank according to claim 1, wherein b is for stopping the lateral rotation of the opening / closing valve 8.