JPH024121A - liquid conveyance device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 cap 2, and the force of the collision causes the kerosene to blow out together with air through the opening 3 and gas vent hole 15, resulting in However, the problem was that the area around the cartridge tank and hands got dirty.

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

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, a valve body provided in the second liquid storage container, and a valve body provided in the second liquid storage container. A cap having a substantially cylindrical valve body case made of a porous material, and an adapter detachably attachable to the cap and communicating with the liquid in the first liquid storage container through a conduit and having a liquid detection element. The tip of the discharge pipe of the adapter pushes open the valve body due to the coupling between the base and the adapter, and at this time, the discharge port opened in the discharge pipe is provided at a position below the lower end of the base. It is equipped with a liquid transport device.

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. At this time, since it has a substantially cylindrical valve body case made of a porous material, the flow path resistance is extremely low and the liquid from the discharge port can flow into the second liquid container. Furthermore, during refueling, as mentioned above, the discharge port opened in the discharge pipe is located below the lower end of the mouthpiece, 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 problem. 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.

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 by a hose 21. The state shown in FIG. 1 is a state in which the adapter 20 is attached to the base 23 of the cartridge tank, which is the second liquid storage container 22, and is 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 20 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 is approximately H-shaped. In addition, a hose connection part 28 for connecting a hose 21 that leads the liquid from the first liquid storage container 16 is located at the upper center of the approximately H-shaped adapter 20, and is also located at the lower center of the approximately H-shaped adapter 20. A discharge pipe 30 that is inserted into the opening 29 of the cap 23 and discharges the liquid conveyed from the first liquid storage container 16 into the second liquid storage container 22 is integrally formed of resin. Also, the tip 31 of the discharge pipe 30
The vicinity is tapered to make it easier to insert the discharge pipe aO into the opening 29 of the mouthpiece 23. 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 between them is approximately 10 mm. The liquid detection element a2 includes a light emitting light receiving element 33 and a prism 34.
This is a light reflection type sensor consisting of a prism 34 placed downward. Further, the discharge pipe aO is molded from a resin material that transmits light.

The notch hole 35 at the tip 31 of the discharge pipe is a hole for guiding the liquid into the discharge pipe from below when the liquid accumulates in the second liquid storage container 22.
Reference numeral 6 designates a so-called air vent hole for discharging the air in the discharge pipe 30 and ensuring that the liquid detection element 32 can detect when the liquid level in the second liquid storage container 22 rises.

A lead wire 37 of the liquid detection element 32 is wired to the control unit 19 through the inside of the discharge pipe 30 and the hose 21. A discharge port 38 opened on the side surface of the discharge pipe 30 is provided at a position below the lower end portion 25 of the base when the adapter 2o is attached to the base 23, and the liquid detection element 32 is located at a position below this discharge port. It is provided on the lower side of 38.

Next, the cap 23 connects to the cap screw portion 39 of the second liquid storage container 22.
It is screwed onto and sealed with a rubber gasket 40.

Inside the cap 23, a compression spring 41 is installed in the opening 29 of one 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 substantially cylindrical 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 is connected to the valve body 4G.
It is a guide. The valve body case 44 is made of a porous material such as punched metal or wire mesh.

In the above configuration, when refueling, the second liquid storage container 22 is installed with the base 23 facing upward as shown in FIGS. 1 and 2, and the tip of the discharge pipe 30 of the adapter 20 is inserted into the opening 29 of the base 23. If you push down the valve body 43 while inserting it,
The hook of the adapter 2o, which is approximately H-shaped when viewed from the front, is engaged with the metal lower end 25 while the claw portion 26 expands outward, and the adapter 20 is locked. At this time, a gap is created between the inner diameter of the opening 29 of the cap 23 and the outer diameter of the discharge pipe 30, which is large enough to allow the air inside the second liquid storage container 22 to flow out of the container 22 with almost no resistance. have.

Next, in this state, by turning on the operation switch 46 and operating the pump unit 18, the liquid is transferred from the first liquid storage container 16 to the second liquid storage container 22 by the pump unit 1B. At this time, the liquid is in hose 2
1, passes through the discharge pipe 30 of the adapter 20, passes through the valve body 44 from the discharge port 38, and enters the second liquid storage 8Z.
The air in the second liquid storage container 22 flows into the second liquid storage container 22 between t7 and 1 as shown by the solid line arrow in FIG. The liquid is discharged into the second liquid storage container 22 as indicated by the dashed arrow in FIG. At this time, the discharge port 1j opened in the discharge pipe 30 is located at the lower end 75J of the mouthpiece 23, so that even if the force of the liquid to be discharged is strong, the liquid will not reach the inner wall of the mouthpiece 23. The liquid flows into the second liquid storage container 22 without colliding with the liquid. Therefore, unlike in the conventional case, the liquid does not hit the inner wall of the cap 2 and the air and liquid together spill out from the opening 3 of the cap 2 due to the momentum, and the liquid is smoothly transferred to the second liquid storage container 22. It has the effect of being able to be transported. In other words, since the liquid and air do not violently collide with each other in the mouthpiece 23 during refueling, there is less flow path resistance due to residual air, and refueling can be done quickly and in a short time. No liquid leaks to the outside and you can refuel without getting your hands dirty.

Furthermore, the valve body case uses a porous material, so that i(1
: Second 1p body! There is no need to provide a special opening for introduction into the storage container, and cutting costs can be reduced.

Further, as a result of a prototype experiment, it was found that by providing the discharge port 38 at a position approximately 30rnrn or more below the opening 29 of the cap, the liquid hits the inner wall of the cap 23 with its force]
It was confirmed that air and liquid do not boil over at the same time through the opening 29 of No. 3.71J.

The liquid is then 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, infrared light emitted from the light emitting element of the light emitting/receiving element 33 hits the prism 34. I'm against it! l! returned by tt L,
The light receiving element of the light emitting light receiving element 33 receives the reflected light (7) and sends it as an electrical signal to the control unit 19 via the lead wire 37.The signal level and the height of the prism 34 of the liquid level bJjj body detection element 32 When the prism t134 reaches the liquid level, the prism t134 is immersed in the liquid, 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.The change in signal level acts to detect the full level of the liquid. Therefore, when the second liquid storage container 22 reaches full capacity, the liquid detection element 32 and the control section 19 function to automatically stop the operation of the pump unit 18. Furthermore, as in this embodiment, the discharge pipe 30 is provided with a discharge D 38 that opens on the side surface, and the liquid detection element 32 is installed below the discharge port 38, so that the inner diameter of the discharge pipe 30, that is, the liquid conveyance path is The flow path area is not narrowed by the detection element 32, and therefore the necessary flow area can be secured without increasing the diameter of the discharge pipe 30. Therefore, the thin, smart, and lightweight adapter 20 can transport liquid in a short time, and is easy to handle and operate.
It also has the unique effect of being easy to clean.

Furthermore, by providing a discharge port 3 opened on the side surface of the discharge pipe 30 and installing a liquid detection element 32 below the discharge port 38, the liquid discharged from the discharge port 38 can be detected by the solid line in FIG. The liquid is discharged diagonally downward from the side surface of the discharge pipe 30 as shown by the arrow. That is, the liquid discharged during refueling can be sprayed onto the liquid detection element 32 on the F side of the discharge port 38, and can be discharged radially on the side surface of the discharge pipe 3o.

death,? This has the effect of preventing the operation of the pump unit 18 from being erroneously automatically stopped even though the liquid has not yet reached the temperature in the second liquid storage container 22 during refueling. This was also confirmed in the prototype of this embodiment, which is a light reflection type sensor having a prism 34, in which the prism 34 is adhesively fixed downward to the inside of the discharge pipe 3o for radial sealing.

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 2 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 adapter 20 can be attached by simply pushing it in lightly, and can be removed by simply grasping the handle part 20 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. This has the advantage that refueling can be done 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 hit the inner wall of the nozzle and open the nozzle 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 valve body case uses a porous material, there is no need to provide a special opening for introducing the liquid into the second storage container, and processing costs can be reduced.

[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. FIG. 4 is a front sectional view of the adapter side of the transfer device, FIG. 4 is a front sectional view of the mouthpiece side of the liquid transfer device, FIG. 5 is a partial sectional view of a conventional cartridge tank, and FIG. 6 is a portion of a conventional liquid transfer device. FIG. 18... Pump unit, 20... Adapter, 22... Second liquid storage container, 23.
...cap, 25...bottom end of cap, 30.
...Discharge pipe, 32...Liquid detection element, 38...Discharge port, 43...Valve body, 44...
...Valve body case. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure/8--- TX" shift unit 26 --- Agupta 2z - Second dredging collection v1 Si Tai z3 - Base diagram Z / 箪1 ■ Diagram funeral diagram

Claims (3)

[Claims] (1) A pump unit that transports the liquid in the first liquid storage container, a cap that is provided in the second liquid storage container and has a substantially cylindrical valve body case made of a valve body and a porous material, and an adapter that is removably attachable and communicates with the liquid in the first liquid storage container through a conduit and has a liquid detection element, and when the cap and the adapter are connected, the tip of the discharge pipe of the adapter is connected to the liquid in the first liquid storage container. A liquid conveyance device in which a valve 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.