JPH024120A - liquid conveyance device - Google Patents

Abstract

PURPOSE:To prevent the liquid from spilling outside from the connecting portion between an adapter and a spout, and to decrease wearing-out and deformation of a discharge pipe for extending the life-time by making the discharge pipe of the adapter of a metallic material, and providing a discharge port formed at a position on the discharge pipe lower than the lower end of the spout. CONSTITUTION:A discharge pipe 30 of an adapter 20 is made of a metallic material. The adapter 20 is connected to a spout 23 causing a valve body 43 to be pushed open by the end of the discharge pipe 30. At this state, a discharge port 38 formed on the discharge pipe 30 is located 30mm or more below the opening of the spout 23. Thereby, even if the liquid is vigorously discharged, the liquid does not spill out with air from the opening of the spout 23 because the liquid does not collide with the inner wall of the spout 23. A long life-time can be expected with less wear-out and deformation in detaching and attaching of the adapter 20 because the discharging pipe 30 is made of a metallic material.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a liquid transport device for transporting liquid from a first liquid storage container to a second liquid storage container.

BACKGROUND OF THE INVENTION In FIG. 5, reference numeral 1 denotes a cartridge tank conventionally used in oil heaters, to which a cap 2 is attached. An opening 3 is formed in the center of the base 2.

A valve body 4 for opening and closing the opening 3 is provided within the cap 2 and is biased in the "close" direction by a compression spring 5. When refueling this cartridge tank 1, it was common to install it on the floor 7 with the cap 2 facing upward, remove the cap 2 from the refueling port 6, and refuel with a pump (not shown) or the like.

However, in the above-described configuration, when refueling the cartridge tank 1, kerosene adheres to the material when the cap 2 is removed from the refueling port 6, causing discomfort. Another problem was that opening and closing the cap 2 was troublesome.

Therefore, a device as shown in FIG. 6 has been proposed as a device that can replenish liquid such as kerosene into the cartridge tank 1 without removing the cap 2 and without getting one's hands dirty. In FIG. 6, when refueling the cartridge tank 1, with the mouthpiece 2 of the cartridge tank 1 facing upward, the valve body 4 is pushed down against the compression spring 5 at the tip of the discharge side pipe 8, and the discharge side pipe 8 is moved between the mouthpieces 2 and 4. The holder 9 is inserted into the cap 2 through the opening 3 of the cap, the holder 9 is placed around the cap 2, and the annular convex portion 1o of the cap 2 is engaged with the engagement recess 11 of the holder 9. Hold it in cap 2. By operating the fuel pump 12 in this state, kerosene is sucked up from the kerosene tank (not shown) through the pipe 13 as shown by the broken line arrow A in FIG. 1, and the air in this tank 1 is discharged to the outside through the opening 3 of the cap 2 and the gas vent hole 15 of the holder 9, as shown by the dot-dash line arrow. (For example, Japanese Utility Model Application Publication No. 62-70238) Problems to be Solved by the Invention However, in the above configuration, the kerosene flow path (broken line arrow) and the air flow path (-dotted chain arrow) in the cap 2 are Since the structure is not partitioned and the liquid kerosene and the gaseous air collide with each other, as a result, it may not be possible to refuel the cartridge tank 1 quickly, or if you try to refuel quickly, there may still be a small amount of kerosene in the tank 1. Even when the kerosene is not filled, the kerosene discharged from the notch 14 of the discharge pipe 8 hits the inside of the mouthpiece 2, and the force of the collision causes kerosene to be blown out from the opening 3 and gas vent hole 15 together with air, resulting in The problem was that the area around the IJ soji tank and hands got dirty.

Furthermore, the opening 3 of the mouthpiece 2 is generally a pressed sheet metal part, and if the material of the discharge pipe 8 is resin, the surface of the discharge pipe 8 comes into contact with the opening 3 each time it is attached to or removed from the opening 3.
There were problems in terms of strength, such as wear and deformation.

The present invention solves such conventional problems, and it is possible to refuel without removing the cap 2 from the cartridge tank 1, which eliminates the inconvenience, and also prevents hands from getting dirty with kerosene. It is an object of the present invention to provide a liquid conveying device that can quickly supply oil in a short period of time and can be expected to extend the life of the adapter.

Means for Solving the Problems In order to solve the above problems, the liquid transport device of the present invention includes a pump unit for transporting the liquid in a first liquid storage container, and a valve body provided in the second liquid storage container. A base having
an adapter that can be detachably attached to the cap and that communicates with the liquid in the first liquid storage container through a conduit and has a liquid detection element; a discharge pipe of the adapter is formed of a metal material; When coupled with the adapter, the tip of the discharge pipe of the adapter pushes open the valve body, and at this time, the discharge port opened in the discharge pipe is provided at a position below the lower end of the mouthpiece. It is equipped with the following.

According to the above-described structure, the adapter is first attached to and connected to the cap of the second liquid storage container during liquid transportation, and the valve body of the cap is pushed open by the tip of the discharge pipe of the adapter. At this time, the discharge port opened in the discharge pipe is located below the lower end of the mouthpiece. Next, by operating the pump unit in this state, the liquid is transported from the first liquid storage container to the second liquid storage container by the pump unit. At this time, the liquid passes through the discharge pipe of the adapter and is discharged from the discharge port to the second liquid storage container, and at the same time, the air in the second liquid storage container flows through the opening of the mouthpiece and the discharge pipe. The liquid is released from the second liquid storage container through the gap between the second liquid storage container and the second liquid storage container. In other words, during refueling, the discharge port opened in the discharge pipe is located below the lower end of the mouthpiece as described above, so even if the force of the liquid to be discharged is strong, the liquid collides with the inner wall of the mouthpiece. The liquid flows into the second liquid storage container without any liquid leakage. Therefore, the liquid does not collide with the inner wall of the cap and blow out air and liquid together from the opening of the cap due to the force as in the conventional case, and the liquid can be smoothly transported to the second liquid storage container. In other words, the flow path resistance due to residual air is small, and refueling can be performed quickly and in a short time.Moreover, the liquid does not leak outside from the vicinity of the joint between the adapter and the mouthpiece, making it possible to refuel without getting your hands dirty.

Furthermore, since the discharge pipe is made of metal material, it may wear out and
There is little deformation and a long life can be expected.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIG. 1, FIG. 2, FIG. 3, and FIG. 4, the first liquid storage container 16 is a polyester tank for storing kerosene, and a control section 19 is arranged above a pump unit 18 having a suction section 17. However, the adapter 20 and the pump unit 18 are connected with a hose 21, and the state shown in Fig. 1 is as follows.
The adapter 20 is attached to the cap 23 of the cartridge tank, which is the second liquid storage container 22, and is in the state of being refueled. Further, 24 is an oil amount display section.

FIG. 2 shows the connecting portion between the adapter 20 of FIG. 1 and the base 23 of the cartridge tank, which is the second liquid storage container 22, and the structure of the vicinity thereof. FIGS. 3 and 4 show the configurations of the adapter 20 side and the base 23 and second liquid storage container 22 sides, respectively, when the adapter 20 and the base 23 are not connected.

First, the adapter 2o has a hook 26 that is hooked onto the lower end 25 of the base so that it can be attached and detached from the base 23 with a single touch, and a handle 27 that opens and closes by grasping the claw 26. The figure has a substantially trapezoidal shape. Further, at the upper center of the approximately trapezoidal adapter 20, there is a hose connection part 28 for connecting the hose 21 that leads the liquid from the first liquid storage container 16, and at the lower center of the approximately trapezoidal adapter 20, there is a base. A discharge pipe 30 made of a metal material such as brass is inserted into the opening 29 of the first liquid storage container 23 and discharges the liquid transported from the first liquid storage container 16 into the second liquid storage container 22. ing. 30'
is a flange portion, which is formed by an O-ring 30' and a sealing structure with the adapter 20. Also, the discharge pipe 30
The vicinity of the tip 31 of the discharge pipe 30 is connected to the opening 2 of the mouthpiece 23.
It is tapered and narrow so that it can be easily inserted into the tube. Since the discharge pipe 30 has an elongated configuration, the outer shape of the distal end 31 of the discharge pipe can be further narrowed to make insertion much easier. Furthermore, a liquid detection element 32 is sealed and fixed in the radial direction near the inner lower part of the discharge pipe 30. This is to automatically stop the pump unit 18 by detecting the full amount when the liquid in the second liquid storage container 22 reaches an appropriate amount.
The distance from the discharge pipe tip 31 is approximately 10 mrn. The liquid detection element 32 is a light reflection type sensor consisting of a light emitting light receiving element 33 and a prism 34.
is installed facing downward. The notch hole 35 at the tip of the discharge pipe 31 is a hole for introducing liquid into the discharge pipe from below when liquid accumulates in the second liquid storage container 22, and the side chamber 36 of the prism 34 is a hole for introducing the liquid into the discharge pipe from below when the liquid accumulates in the second liquid storage container 22. This is a so-called air vent hole for discharging the air inside and ensuring that the liquid detection element 32 can detect when the liquid level in the second liquid storage container 22 rises. Liquid detection element 3
The second lead wire 37 is wired to the control section 19 through the inside of the discharge pipe 3o and the hose 21. Discharge pipe 3
A discharge port 38 opened on the side of the adapter 20 connects the adapter 20 to the base 2.
3, the liquid detection element 32 is provided below the discharge port 38.

Next, the cap 23 connects to the cap screw portion 39 of the second liquid storage container 22.
It is screwed into place and sealed with a rubber gasket 4o.

Inside the cap 23, a compression spring 41 is installed in the opening 29 of the cap.
The opening 29 is sealed and closed when the adapter 20 is not connected to the base 23. That is, the compression spring 41 is a biasing means that always biases the valve body 43 in a direction toward closing. Further, a valve body case 44 which is caulked and fixed to the inside of the cap 23 and to the outside of the valve body 43 guides the valve body 43. The side surface of the valve body case 44 has a large open window 45 formed therein. The opening range of the opening window 45 is such that when the adapter 20 is coupled to the base 23, it opens at least from the discharge pipe tip 31 to a position above the discharge port 38.

In the above configuration, when refueling, the second liquid storage container 22 is installed with the base 23 facing - as shown in FIGS. 1 and 2, and the tip of the discharge pipe 3o of the adapter 20 is inserted into the opening 29 of the base 23. When the valve body 43 is pushed down while inserting the valve body 43, the catch of the adapter 20, which is approximately H-shaped when viewed from the front, engages the lower end 25 of the mouthpiece while the claw portion 26 expands to the 4 sides, and the adapter 20 is engaged. Ru. At this time, there is a gap between the inner diameter of the first part 29 and the outer diameter of the discharge pipe 3o.
There is a gap large enough for the air in the second liquid storage container 22 to flow out of the container 22 with almost no resistance.

Next, in this state, turn on the operation switch 46 and pump unit 7.
) 18, liquid is transported 5 from the first liquid storage container 16 to the second liquid storage container 22 by the pump unit 18. At this time, the liquid flows from the port 21 through the discharge pipe 30 of the adapter 20 and from the discharge port 38 into the second liquid storage container 22 as shown by the solid line arrow in FIG. The air inside the opening 29 and the discharge pipe co.
The liquid is released from the gap between the liquid container 22 and the second liquid storage container 22 as shown by the broken line arrow in FIG. At this time, the discharge pipe 30
3 B is located at a position below the lower end 25 of the cap 23. Even if the force of the discharged liquid is strong, the liquid collides with the inner wall of the Ll metal 23. However, the liquid flows into the second liquid storage container 22 without the liquid flowing into the second liquid container 22.
Air and liquid are forced into the opening Y-1 part 3 of the cap 2 by hitting the inner wall of the cap 2, and the liquid is smoothly transferred to the second liquid storage container 22 without boiling over.
It has the effect of being able to be transported every time. In other words, since the liquid and air do not violently collide with each other in the 11-karat gold 23 during refueling, there is less flow path resistance caused by residual air, and refueling can be done quickly and in a short time. No liquid leaks outside from the vicinity of the joint, and you can refuel without getting your hands dirty.

In addition, as a result of a prototype experiment, the liquid hits the inner wall of the cap 23 and the force of the liquid hits the inner wall of the cap 23.
It was confirmed that the opening [Part 1 29] has the effect of preventing air and liquid from boiling over together.
child.

Yes (at -2, the liquid is transported to the second liquid storage container 22, and before the liquid level reaches the height of the prism 34 of the liquid detection element 32, the infrared rays emitted from the light emitting element of the light emitting/receiving element 33 pass through the prism. 1, 34, and the light receiving element of the light emitting/receiving element 33 receives the reflected light and sends it as an electric signal to the control unit 19 via the lead wire 37. When the height of the prism 34 of the element 32 is reached, the prism 34 is immersed in the liquid, the light is diffused from the surface of the prism 34, and the amount of reflected light received by the light-emitting/receiving element 33 decreases. Therefore, when the second go liquid storage container 22 reaches full capacity, the liquid detection element 32 and the control section 19 work to automatically stop the operation of the pump unit 18. - can be 13 still as in this example
13F: IC', -IL- on the side of the discharge pipe 30
Two discharges [11138 (I11, that discharge! J'+
Since the liquid detection element 32 is installed below I-', 13B, the inner diameter of the discharge pipe 1', that is, the liquid conveyance path, is not narrowed by the liquid detection element 32, and therefore the diameter of the discharge pipe 30 is The necessary flow path area can be secured without making it thicker.

Furthermore, compared to resin materials, it is possible to have a thin wall configuration from the viewpoint of mechanical strength, and the flow path area can be easily determined (v).As a result, the fluid conveyance ability is improved, and the adapter 20 is thin, smart, and compact. It also has the unique effect of being able to transport the liquid in a short time, and is also easy to handle. Liquid detection element 3
2, the liquid (wood) discharged from the discharge L 138 is discharged diagonally downward from the side of the discharge pipe 30 as shown by the solid arrow in FIG. When the liquid is discharged, the liquid is detected by the liquid detection element 32 below the discharge port 38.
The liquid can be discharged onto the side surface of the discharge pipe 30 without causing the liquid to scatter. Therefore, there is an effect that it is possible to prevent the operation of the pump unit 18 from being erroneously automatically stopped even though the second liquid storage container 22 has not yet been filled with liquid during refueling. This is the prism 34 of this embodiment.
This was also confirmed in a prototype product in which the prism 34 was adhesively fixed downward to the inside of the discharge pipe 30 so as to seal it in the radial direction.

Furthermore, when the liquid level of the second liquid storage container 22 reaches a predetermined full level, the pump unit 18 automatically stops as described above, which is very convenient for use. Just by lightly pinching the handle 27 of the adapter 20, the hook part 26 of the adapter 20 expands, and the adapter 20 can be easily removed from the base 23, resulting in good operability and easy attachment and detachment. In this way, the adapter 20
and the cap 23, the lower end portion 25 of the cap and the claw portion 26 of the adapter.
By having a structure that connects by meshing with the
The handle part 27 can be attached by simply pushing the adapter 20 lightly.
It can be released by simply grasping it lightly.

In this manner, the unique effect of being able to attach and detach the adapter 20 in a very simple and reliable manner can be obtained.

Effects of the Invention As described above, the liquid transport device of the present invention provides the following effects.

(1) The adapter can be detachably attached to the cap of the second liquid storage container, and there is no need to touch the cap directly, so there is an effect that refueling can be done without getting the hands dirty.

(2) In addition to the configuration in which the adapter can be detachably attached to the cap of the second liquid storage container, the tip of the discharge pipe of the adapter pushes open the valve body of the cap, and the adapter has a liquid detection element. There is an effect that refueling can be performed without the trouble of removing the cap, and that the pump unit can be automatically stopped when the second liquid storage container reaches the desired liquid level.

(3) The discharge port in the discharge pipe is located below the bottom end of the nozzle, so even if the liquid is discharged with strong force, it will collide with the inner wall of the nozzle and cause the nozzle to open together with the air inside the container. It has the unique effect of being able to refuel quickly during transport without spilling out of the tank.

(4) Since the discharge pipe is made of a metal material, there is less wear and tear and deformation when the adapter is attached and detached, and a longer life can be expected. Furthermore, compared to resin materials, it is possible to have a thinner structure, making it easier to secure a flow path area. Therefore, the ability to transport liquid can be improved.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view of the overall structure of a liquid conveyance device according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of the main part of the same liquid conveyance device in a state where an adapter and a base are combined, and FIG. (Figure 4 is a front cross-sectional view of the adapter side of the conveying device, Figure 4 is a front cross-sectional view of the mouthpiece side of the liquid conveying device, and Figure 5 is a conventional car)
FIG. 6 is a partial cross-sectional view of an IJ nozzle tank, and FIG. 6 is a partial cross-sectional view of a conventional liquid conveying device. 18... Pump unit, 20... Adapter, 22... Second liquid storage container, 23...
...Cap, 25...Lower end of cap, 30...
...Discharge pipe, 32...Liquid detection element,
38... Discharge port, 43... Valve body. Name of agent: Patent attorney Toshio Nakao and one other person 1st funeral map / 8--1 wood unit 23- 0th small broom map, M-ai: Exit (3--→ call 1 tree number) Figure diagram

Claims (3)

[Claims] (1) A pump unit that transports the liquid in the first liquid storage container, a cap that is provided on the second liquid storage container and has a valve body, and a cap that can be detachably attached to the cap and that stores the first liquid. an adapter that communicates with the liquid in the container through a conduit and has a liquid detection element; the discharge pipe of the adapter is made of a metal material; and the tip of the discharge pipe of the adapter is connected to the valve by coupling the mouthpiece to the adapter. A liquid conveying device in which a body is pushed open, and a discharge port opened in the discharge pipe is provided at a position below a lower end of the mouthpiece. (2) The liquid transport device according to claim 1, wherein the discharge port is provided at a position 30 mm or more below the opening of the mouthpiece. (3) The liquid conveyance device according to claim 1, wherein the tip of the discharge pipe is formed with a narrow outer shape to facilitate insertion.