JPH024111A - Liquid transfer device - Google Patents

Abstract

PURPOSE:To prevent oil from splashing on a liquid detector during oil supply operation by providing an opening on the side of a spring support of a spout at least from the upper side of a discharge port to a position beyond the lower side of the liquid detector when an adapter is mounted on the spout. CONSTITUTION:When an adapter 20 is mounted on a spout 23, a spring support 44 of the spout 23 provides an opening on its side at least from the upper side of a discharge port 38 to a position beyond the lower side of a liquid detector 32. Liquid flows through a discharge pipe 30 of the adapter 20 and is discharged from the discharge port 38 into No.2 liquid container 22 through the opening on the side of the spring support 44. At the same time, air in No.2 liquid container is discharged outside No.2 container through a gap between the opening of the spout 23 and the discharge pipe 30. Even when vigorously discharged, the liquid flows into No.2 liquid container 22 without overflowing outside the spout 23 as the liquid collides with the inner wall of the spring support 44 of the spout 23.

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, and an opening 3 is formed in the center of the cap 2 to which a cap 2 is attached.

A valve body 4 for opening and closing the opening 8 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 with the tip of the discharge side vibrator 8, and the discharge side vibrator 8 is moved to the mouthpiece 2. 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 protrusion 10 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. The air in the tank 1 is also 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 dash-dotted line arrow B. (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) in the cap 2 and the air flow! 8 (-dotted chain arrow) is not partitioned, and the liquid kerosene and the gaseous air collide with each other, so as a result, it is not possible to refuel quickly in the cartridge tank 1, or if you try to refuel quickly. Even when there is only a small amount of kerosene in the tank 1, the kerosene discharged from the notch 14 of the discharge vibrator 8 hits the inside of the mouthpiece 2, and the force of the collision causes the kerosene to flow into the opening 3 and the gas vent hole 15. The kerosene in the cartridge tank 1 will be blown out along with the air, and as a result, the area around the cartridge tank and hands will become dirty.In addition, while refueling, always silently check whether the kerosene in the cartridge tank 1 is full or not. This poses a problem in that the operation of the pump 12 must be stopped manually, which is cumbersome.

The present invention solves such conventional problems, and allows refueling without removing the cap from the cartridge tank, and automatically stops the refueling pump when the liquid level in the tank reaches a predetermined level, eliminating the inconvenience. It is an object of the present invention to provide a liquid conveyance device whose automatic stop function is reliable and tedious without malfunction.

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; further, the adapter has a discharge pipe section, and the adapter The discharge vibrator is provided with a discharge port opening on the side surface of the discharge vibrator, and the dispensing vibrator has a tip with a narrow outer shape for easy insertion, the liquid sensing element is provided below the discharge port, and the valve body is energized. The spring receiver of the cap, which receives a spring and guides the valve body, is configured to hold a liquid whose side surface is open from at least the upper side of the discharge port to the position below the liquid sensing element when the cap and the adapter are combined. It is equipped with a transport device.

Operation 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 transport, and the valve body of the cap is pushed open by the tip of the discharge vibrator of the adapter. Since the outer shape of the distal end of the ejection vibrator is narrowed, there is an effect that the ejection vibrator can be easily inserted into the mouthpiece. When the adapter is attached and coupled to the cap, the spring receiver of the cap has an open side surface at least from the upper side of the discharge port to the lower side of the liquid sensing element, and by operating the pump unit in this state, , the liquid is conveyed 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 into the second liquid storage container while crossing the opening on the side surface of the spring receiver. At the same time, the air within the second liquid storage container is released from the second liquid storage container through the gap between the opening of the mouthpiece and the discharge vibrator. In other words, during refueling, the opening range of the spring holder of the mouthpiece extends from at least the upper side of the ejection opening of the ejection vibrator to the lower side of the liquid sensing element, so even if the force of the ejected liquid is strong, The liquid collides with the inner wall of the spring receiver of the cap and flows into the second liquid storage container without overflowing to the outside of the cap.

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, when the liquid is transported and the liquid level in the second liquid storage container reaches the liquid detection element installed near the inner tip of the discharge pipe, the pump unit automatically stops operating, as in the conventional case. This eliminates the troublesome problem of having to manually stop the operation of the pump while visually checking whether the tank is at full capacity. However, not only that, but during refueling, as mentioned above, the opening range of the spring holder of the mouthpiece is at least from the upper side of the discharge port of the discharge pipe to the lower position of the liquid detection element. The liquid passes through the discharge pipe of the adapter and opens from the discharge port to the side surface of the spring receiver without splashing the liquid on the liquid detection element provided in the discharge pipe inserted into the spring receiver. The liquid is discharged into the second liquid storage container while crossing the area where the liquid is being transported, and the liquid discharged during liquid transportation directly hits the liquid detection element and stops the pump unit because the liquid is mistakenly full even though it is not. This function also prevents malfunctions such as The liquid sensing element is an optical sensor having a prism, and as described above, the opening range of the spring holder of the base is at least from the upper side of the discharge port of the discharge pipe to the lower side of the liquid sensing element. Due to the structure, when the liquid reaches full volume and should stop,
This also works to prevent malfunctions in which the pump unit does not automatically stop because the light from the liquid sensing element is reflected on the inner wall surface of the spring receiver of the cap and returns to the liquid sensing element.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIG. 1, FIG. 2, FIG. 8, 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, the base 28, and the second liquid storage container 22, respectively, when the adapter 20 and the base 23 are not connected. First, the adapter 20 is attached to and detached from the base 23 with a single touch.The hook that is hooked onto the lower end 25 of the base is a claw part 26, and the handle part 27 is opened and closed by grasping the claw 26.
The entire adapter 20 has a substantially H-shaped front sectional shape. 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 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 from resin. Also, the discharge pipe 30
The vicinity of the tip 31 is tapered to make it easier to insert the discharge pipe 30 into the opening 29 of the mouthpiece 23. In addition to having the tip 31 of the discharge pipe 30 tapered as shown in the drawings of the embodiment, the same effect of ease of insertion can be obtained even if the outer shape is narrowed into an R-chamfered shape or a C-chamfered shape. Furthermore, a liquid detection element 32 is fixedly installed near the inner lower part of the discharge pipe 30 in a radially sealed manner. This is to detect the full amount and automatically stop the pump unit 18 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 32 is the light emitting light receiving element 3
3 and a prism 34, with the prism 34 facing downward.
The liquid sensing element 32 is radially sealed and fixed inside the discharge vibrator 30 with the prism 34 facing downward so that the liquid discharged from the prism 34 does not directly contact the surface of the prism 34. This can prevent malfunctions such as liquid flowing onto the surface of the prism 34 and the pump unit 18 stopping even though the liquid has not reached full capacity during liquid transport. In this case, the prism 34 is not limited to the downward direction, but may be a liquid sensing element formed with a horizontal prism. When using a liquid sensing element with a horizontal prism, the distance between the discharge pipe tip 31 and the liquid sensing element 32! There is also the effect that the ejection vibrator can be made shorter by about 110 mm.

Furthermore, the notch hole 35 at the tip of the discharge pipe 31 is a hole for guiding the liquid into the discharge vibrator from below when liquid accumulates in the second liquid storage container 22, and the side hole 36 of the prism 34 is This is a so-called air vent hole for discharging the air inside the discharge vibrator 30 so that the liquid detection element 32 can reliably detect when the liquid level in the second liquid storage container 22 rises. The lead wire 37 of the liquid detection element 32 is connected to the control unit 19 through the inside of the discharge vibrator 30 and the boss 21.
It is wired to. A discharge port 38 opened on the side surface of the discharge vibrator 30 is provided at a position below the lower end portion 25 of the base when the adapter 20 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 the cap.
The valve body 43 is equipped with a zero leak valve 42 which is pressed and biased by the pressure force, and when the adapter 20 is not connected to the base 23, the opening 29 is sealed and closed. That is, compression spring 41
is a biasing means that always biases the valve body 43 in a direction in which it tends to close. Further, a spring receiver 44 crimped and fixed to the inside of the cap 23 and to the outside of the valve body 43 guides the valve body 43. A wide open window 45 is formed on the side surface of the spring receiver 44.

The opening range of the opening window 45 is such that when the adapter 20 is connected to the base 23, the opening range extends from at least the upper side of the discharge port 38 to the lower side of the liquid sensing element 32.

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 vibrator 30 of the adapter 20 is inserted into the opening 29 of the base 23. If you push down the valve body 48 while inserting it,
The hook portion of the adapter 20, which has a substantially 1-1 cross-sectional shape, is engaged with the lower end portion 25 of the base while the claw portion 26 expands outward, thereby locking the adapter 20 therein. At this time, the opening 2 of the cap 23
There is a gap between the inner diameter of the second liquid storage container 9 and the outer diameter of the discharge vibrator 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.

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 18. At this time, the liquid is in hose 2
1, through the discharge vibrator 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 liquid is discharged from the gap between the opening 29 and the discharge vibrator 30 to the outside of the second liquid storage container 22 as indicated by the broken line arrow in FIG. At this time, the spring receiver 44 of the base 23
A large opening window 45 is formed on the side surface of the
When the adapter 20 is connected to the base 23, the opening range of the opening window 45 is at least from the upper side of the discharge port 88 to the lower side of the liquid detection element 32, so that the force of the discharged liquid is increased. Even if the liquid is strong,
The liquid flows into the second liquid storage container 22 without colliding with the inner wall of the spring receiver 44 of No. 3. 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 outside from the vicinity of the joint, allowing you to refuel without getting your hands dirty.

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. The light receiving element of the light emitting and receiving element 33 receives the reflected light and sends it as an electrical signal to the control unit 19 via the lead wire 37. When the height of 34 is reached, the prism 34 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. act. 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. This action eliminates the hassle of refueling and manually stopping the operation of the pump while silently checking whether the refueling tank is full or not, which is the case with conventional pumps. In this case as well, it has been confirmed that the prism 34 can be successfully automatically stopped not only in the downward direction but also in any of the liquid detection elements in which the prism is formed in the horizontal direction. Therefore, the prism 34 can be used either downward or sideways.

Further, by providing a discharge port 38 that opens on the side surface of the discharge vibrator 30 and installing a liquid detection element 32 below the discharge port 38, the inner diameter of the discharge vibrator 30, that is, the liquid conveyance path, is narrowed by the liquid detection element 32. Therefore, the necessary flow path area can be secured without increasing the diameter of the discharge vibrator 30. Therefore, the adapter 20, which is thin, smart, and lightweight, has the unique effect of being able to transport liquid in a short time and being easy to handle and operate. Furthermore, a discharge port 38 opened on the side surface of the discharge vibrator 30 is provided,
By installing the liquid detection element 32 below the discharge port 38, the liquid discharged from the discharge port 38 is discharged diagonally downward from the side surface of the discharge vibrator 30 as shown by the solid arrow in FIG. .

That is, the liquid discharged at the time of refueling does not splash onto the liquid detection element 32 below the discharge port 38, and the liquid flows through the discharge vibrator 3.
It can be ejected on the side radiation of 0. 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 a light reflection type sensor having a prism 34 according to this embodiment.
This was also confirmed in the prototype of this example, which was adhesively fixed downward to the inside of the discharge vibrator 30 for radial sealing.

However, in addition to this, the liquid detection element 32 is composed of an optical sensor having a prism 34, and during refueling, as described above, the opening range of the spring receiver 44 of the mouthpiece 23 is 1, and at least the discharge opening 38 of the discharge vibrator 30 is Due to the above configuration from the upper side to the lower side of the liquid detection element 32, during refueling,
The liquid passes through the discharge pipe 30 of the adapter 20 and reaches the discharge port without the liquid being applied to the liquid detection element 32 provided in the discharge vibrator 30 inserted into the spring receiver 44 of the cap 23. The liquid is discharged from 38 into the second liquid storage container 22 while crossing the opening on the side surface of the spring receiver 44, and during the liquid conveyance, the liquid that can be completely discharged directly hits the liquid sensing element 32 and is not full. This has the effect of preventing malfunctions such as stopping the pump unit 18 by mistake when the amount is full. In this case as well, it was confirmed that any of the liquid detection elements in which the prism 34 was formed not only in a downward direction but also in a sideways direction did not malfunction. Therefore, the prism 34 can be used either downward or sideways.

Further, as described above, since the opening range of the spring receiver 44 of the cap 23, that is, the opening window 45 extends at least from the upper side of the discharge port 38 of the discharge vibrator 30 to the lower side of the liquid detection element 32, the liquid is The pump unit 18 does not automatically stop because the light from the liquid detection element 32 is reflected on the inner wall surface of the spring receiver 44 of the cap 23 and returns to the liquid detection element 32 when it reaches full capacity and should stop. It also has the effect of preventing malfunctions. In this case as well, it has been confirmed that the prism 34 can be successfully automatically stopped not only in the downward direction but also in any of the liquid detection elements in which the prism is formed in the horizontal direction. Therefore, the prism 34 can be used either downward or sideways.

In addition, in this embodiment, as a result of attaching a wire mesh or a resin mesh to the opening range of the spring receiver 44 of the base 23, that is, the opening window 45,
It was also confirmed that none of the above effects were impaired. For this reason, the wire mesh or resin mesh can be regarded as an opening.

Furthermore, after stopping the refueling, the handle 27 of the approximately H-shaped adapter 2Q
By simply pinching the adapter 20 lightly, the claws 26 of the nine hooks of the adapter 20 expand, allowing the adapter 20 to be easily removed from the base 23, resulting in good operability and easy attachment and detachment. In this way, the adapter 20 and the base 23 are connected by engaging the lower end 25 of the base and the claw part 26 of the adapter, so that the adapter 20 can be attached by simply pushing it in lightly and lightly grasping the handle part 27. You can leave with just that.

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 vibrator 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 a desired liquid level.

(3) The opening range of the spring holder of the cap is at least from the upper side of the discharge port of the discharge vibrator to the lower position of the liquid detection element, so that the liquid does not come into contact with the liquid detection element during refueling. acts so that it is discharged into the second liquid storage container while crossing the opening in the side surface of the spring receiver, and the liquid discharged during liquid transportation directly hits the liquid detection element and becomes full. This has the unique effect of preventing malfunctions such as stopping the pump unit by mistake when it is full.

(4) Since the opening range of the spring holder of the cap is at least from the upper side of the ejection port of the ejection vibrator to the lower position of the liquid detection element, the liquid can be detected when the liquid reaches full level and should be stopped. This has the unique effect of preventing malfunctions such as the pump unit not automatically stopping due to light from the element being reflected on the inner wall surface of the spring holder of the cap and returning to the liquid sensing element.

(5) By providing a discharge port opening on the side surface of the discharge vibrator and installing a liquid detection element below the discharge port, the inner diameter of the discharge vibrator, that is, the liquid conveyance path, is not narrowed by the liquid detection element. Therefore, the necessary flow path area can be secured without increasing the diameter of the discharge vibrator. Therefore, it has the unique effect of being able to transport liquid in a short time with a thin, smart, and lightweight adapter, as well as being easy to handle and operate.

[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 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 front view of the conventional liquid transfer device. FIG. DESCRIPTION OF SYMBOLS 16... First liquid storage container, 18... Pump unit, 20... Adapter, 22... Second liquid storage container, 23... Mouthpiece, 30... Discharge pipe, 32...
...Liquid detection element, 38...Discharge port, 41...Spring, 43...Valve body, 44...Spring receiver. Name of agent Patent attorney Toshio Nakao Haka 18 Fig. 16-Daiichi no 5 & Zai U-ku, Notoli family lδ-Dainfu 1 Connie-7 to 20--Agedek 22-s 2 no Nakama Kurumaizumi Vessel 4-Kou Qin Diagram Diagram Diagram Diagram Diagram

Claims (1)

[Claims] a pump unit for transporting the liquid in the first liquid storage container; a cap provided on the second liquid storage container and having a valve body; an adapter having a liquid detection element that communicates with the liquid through a conduit, the adapter further having a discharge pipe section, a discharge port opening on a side surface of the discharge pipe, and a A spring receiver of the cap, which is provided with a liquid detection element and receives a spring that biases the valve body and guides the valve body, detects the liquid from at least the upper side of the discharge port when the cap and the adapter are combined. A liquid conveyance device in which the side surface is opened to a position below the element, and the discharge pipe is formed with a narrow outer shape at the tip to facilitate insertion.