JPH024116A - Liquid transfer device - Google Patents

Abstract

PURPOSE:To prevent discharging liquid from splashing over a liquid detecting element for avoiding mal-functioning by providing a light reflecting type sensor having a prism as the liquid detecting element, and installing the prism inside a discharge pipe. CONSTITUTION:An adapter 20 is provided with a discharge pipe section. The discharge pipe 30 is provided with discharge port 38 on its side and reduced in outside diameter at its end so as to be inserted easily. A liquid detecting element 32 is installed below the discharge port 38 and is comprised of a light reflection type sensor with a prism 34. The prism 34 is arranged inside the discharge pipe 34 so as to prevent its surface from being directly splashed by the liquid. During oil supply operation, the liquid can be radially discharged through the side of the discharge pipe 30 without splashing over the liquid detecting element 32 that is located below the discharge port 38. Therefore, such a mal-functioning can be prevented from occurring that a pump unit 18 is automatically stopped by mistake during oil supply operation when the liquid in No.2 container 22 does not reach the full level.

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 up, 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 pipe 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. 1, and the air in this tank is discharged to the outside from the opening 3 of the base 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) 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 inside, 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 blow out together with air through the opening 3 and gas vent hole 15, resulting in In addition, the area around the cartridge tank and hands will get dirty, and besides that, the operation of the refueling pump 12 must be manually stopped while refueling while silently checking with the refueling tank to see if the kerosene in the cartridge tank 1 has reached its full level. However, there was a problem in that it was unavoidable and cumbersome.

The present invention solves such conventional problems, and the present invention is capable of refueling without removing the cap from the cartridge tank, and when a predetermined tank liquid level is reached, the refueling pump automatically stops, thereby eliminating the trouble of liquid transportation. The purpose is to provide equipment.

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 a
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 is attached, and further, the adapter has a discharge vibrator, and the adapter The discharging vibrator is provided with a discharge port opening on a side surface thereof, the dispensing vibrator has a tip with a narrow outer shape for easy insertion, the liquid sensing element is provided below the discharge opening, and the liquid detecting element is A light reflection type sensor having a prism, the prism is installed inside the discharge pipe, and the liquid conveyance device is provided so that the liquid discharged from the discharge port does not directly flow on the surface of the prism. It is something.

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 transportation, and the valve body of the cap is pushed open by the tip of the discharge vibrator of the adapter. The discharge port opened in the discharge vibrator is located below the lower end of the mouthpiece. Note that since the tip of the discharge vibrator is formed with a narrow outer shape, it has the advantage of being easy to insert into the mouthpiece of the discharge vibrator. 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 into the second liquid storage container, and at the same time, the air in the second liquid storage container is transferred between the opening of the mouthpiece and the discharge vibrator. 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 vibrator is located below the lower end of the 011 nozzle as described above, so even if the force of the liquid to be discharged is strong, the liquid will hit the inner wall of the nozzle. It flows into the second liquid storage container without collision. 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 solves the troublesome problem of having to manually stop the operation of the pump while refueling while silently checking whether the tank has reached its full capacity. However, in addition to this, since the discharge port is opened on the side of the discharge pipe and the liquid detection element is provided below the discharge port, the liquid discharged during liquid conveyance is diagonally oblique to the discharge port. This works to prevent malfunctions such as the liquid being discharged downward and directly hitting the liquid detection element and causing the pump unit to stop because the liquid is mistakenly full even though it is not. Another important point is that since the liquid sensing element is configured to be below the discharge port of the discharge pipe, the liquid sensing element is installed after the liquid conveyance channel of the discharge pipe during liquid conveyance. This eliminates the need for flow rate pressure loss, that is, even if the discharge pipe is configured to be thin, the pressure loss is small and oil can be supplied quickly in a short period of time. Generally, refueling devices that automatically stop at full capacity using sensors that are already on the market have a chamber partitioned off by a partition wall in the discharge pipe, and a liquid detection element is installed in that chamber, and the discharge pipe has a large diameter. ing. In the case of this current commercially available product, in which the cartridge tank's cap is removed and the discharge pipe is inserted into the tank for refueling, the thickness of the discharge pipe is not so much of a problem. In the case of a system in which oil is supplied without removing the valve, an important condition is that the diameter of the discharge pipe can be made small due to the dimensional constraints of the opening of the mouthpiece.

Therefore, by configuring the liquid detection element to be located below the discharge port of the discharge pipe, the liquid detection element is installed after the liquid conveyance channel of the discharge pipe during liquid conveyance, resulting in a flow rate pressure drop. It is important that the discharge pipe can be made thinner without having to become thinner.

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, the base 23, 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 when the liquid in the second liquid storage container 22 reaches an appropriate amount and automatically stop the pump unit 18. 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 is not fully filled 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 a liquid sensing element having a horizontal prism is used, there is also the effect that the distance between the ejection vibrator tip 31 and the liquid sensing element 32 is about 1.0 mm, which allows the ejection vibrator to be made shorter.

Furthermore, the cutout hole 35 at the tip 31 of the discharge vibrator is a hole for guiding the liquid into the discharge vibrator from below when the liquid accumulates in the second liquid storage container 22, and the anti-icing 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 reed 37 of the liquid detection element 32 passes through the discharge vibrator 30 and the hose 21 to the control unit 19.
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 is screwed onto the -1 thread 39 of the second liquid storage container 22 and sealed with a comb packing 40. Inside the cap 23 is a valve body 43 equipped with an O-ring 42 that is biased by a compression spring 41 to the opening 29 of the cap.
The opening 29 is sealed and closed when the adapter 20 is not connected with the base 231. That is, the compression spring 41 is a biasing means that always biases the valve body 43 in a direction toward closing. 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, it is opened at least from the discharge vibrator tip 31 to the north side of the discharge port 38.

In the above configuration, when refueling, the second liquid storage container 22 is installed with the mouthpiece 23 facing toward the top as shown in FIGS. When the valve body 43 is pushed down while inserting the tip of the vibrator 30, the catch of the adapter 20, which has a substantially H-shaped cross section, engages the lower end 25 of the 11-karat gold while the claw portion 26 expands outward, and the adapter 20 is locked. be done. At this time 1-j Fri 23
Opening 29 (7) Between the inner diameter and the outer diameter of the discharge vibrator 30, the air inside the second liquid storage container 22 flows into the container 22.
It has a gap large enough to allow outflow L/with almost no resistance.

Next, in this state, by turning on the operation switch 4G 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 flows into the second liquid storage container 22 from the discharge port 38 through the discharge vibrator 30 of the adapter 20 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 discharge port 38 opened in the one-stop dispensing vibrator 30 is located at a position below the lower end 25 of the cap 23, so even if the force of the liquid to be discharged is strong, the liquid will not flow into the cap, 233. without colliding with the inner wall of
It acts to flow into the second liquid storage container 22.

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. This has the effect of being able to be transported to the storage container 22. 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. You can refuel without getting your hands dirty without any liquid leaking out.

Further, as a result of a prototype experiment, by providing the discharge port 38 at a position approximately 30 mm or more below the opening 29 of the cap, the liquid hits the inner wall of the cap 23, and the force causes air and liquid to flow through the opening 29 of the cap 23. We were able to confirm that it has the effect of eliminating the occurrence of boiling over all at the same time.

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 and 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.The change in the signal level is used to detect the full level of the liquid. do. 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 addition, the discharge port 38 that opens on the side surface of the discharge vibrator 30 is provided, and the liquid sensing element is placed below the discharge port 38 without being narrowed. Road area can be secured. 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, the discharge vibrator 30 is provided with a discharge port 88 opened on the side surface thereof, and a liquid detection element 32 is provided below the discharge port 38.
2, the liquid discharged from the discharge port 38 is discharged diagonally downward from the side surface of the discharge vibrator 30 as indicated by the solid line 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.

Furthermore, after stopping the refueling, the handle 27 of the approximately H-shaped adapter 20
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. Since 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, the adapter 20 can be attached by simply pushing it in lightly and simply grasping the handle part 27 lightly. You can leave with .

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) 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 and 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 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. DESCRIPTION OF SYMBOLS 16... First liquid storage container, 18... Pump unit, 20... Adapter, 22... Second liquid storage container, 23... Mouthpiece, 30... Discharge vibrator, 32...
...liquid detection element, 34...prism, 38...discharge port, 43...valve body. Name of agent: Patent attorney Toshio Nakao, 16-year-old
-First body storage g/a-Bosovunits L 2θ-゛Adapter 22...-Second obscene collection J internal name'1 z3---mouth/Fold Fig. 3 2/1 Fig. 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 liquid detection element is provided, and the liquid detection element is a light reflection type sensor having a prism, and the prism is installed inside the discharge pipe so that the liquid discharged from the discharge port does not directly flow on the surface of the prism. The liquid conveying device is provided in a liquid conveying device, wherein the discharge pipe is formed with a narrowed outer shape at a tip for easy insertion.