JPH024107A - Liquid transfer device - Google Patents

Abstract

PURPOSE:To make it possible to supply kerosene quickly without blowing off by installing a sponge-shaped liquid absorbing member in an interface between a cap main body and an adapter and forming two passages, say, so passage and return passage between two liquid containers. CONSTITUTION:An adapter 20 is fitted into and connected with a cap main body 23 of a second liquid container 22 during liquid transfer so as to form an oil supply pipeline which comprises a go passage 44 and a return passage 39 between a first liquid container 16 and the second liquid container 22. In addition, a sponge-shaped liquid absorbing member 38 is fitted into a connection interface between the cap main body 23 and the adapter 20. The liquid flows into the second liquid container 22 passing through the go passage 44. At the same time, the air present in the second liquid container 22 moves to the first liquid container 16, passing through the return passage 39, thereby eliminating any possible collision between the liquid and the air in the cap main body and sending the liquid to the second liquid container. When the adapter is removed from the cap main body after refuel, the sponge-shaped absorbing member 38 is expanded and restored to its original shape, absorbing the liquid around its vicinity without contaminating its surrounding parts.

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. 6, reference numeral 1 denotes a cartridge tank conventionally used in oil heaters, to which a cap body 2 is attached. An opening 3 is formed in the center of the cap body 2.

A valve body 4 for opening and closing the opening 3 is provided within the cap body 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 body 2 facing upward, remove the cap body 2 from the refueling port 6, and refuel using 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 body 2 is removed from the refueling port 6, which causes discomfort. Further, there was a problem that opening and closing the cap body 2 was troublesome.

Therefore, a device as shown in FIG. 7 has been proposed as a device that can replenish liquid such as kerosene into the cartridge tank 1 without removing the cap body 2 and without getting one's hands dirty. In Fig. 7, when refueling the cartridge tank 1, the discharge side vibrator 8 is held with the cap body 2 of the cartridge tank 1 facing upward.
While pushing down the valve body 4 against the compression spring 5 with the tip of the
Insert the discharge side vibrator 8 into the cap body 2 through the opening 3 of the cap body 2, cover the circumference of the cap body 2 with the holder 9, and fit the engagement recess 11 of the holder 9 into the annular convex portion 10 of the cap body 2. By engaging the holder 9, the holder 9 is held in the cap body 2. By operating the fuel pump 12 in this state, kerosene is sucked up from the kerosene tank (not shown) through the vibrator 13 as shown by the broken line arrow A in FIG. The air in the tank 1 is replenished to the outside through the opening 3 of the cap body 2 and the gas vent hole 15 of the holder 9 as shown by the dotted chain 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 arrow) and the air flow path (-dotted chain arrow) in the cap body 2 are is not partitioned, and the liquid kerosene and gaseous air collide with each other.As a result, it may not be possible to refuel quickly into the cartridge tank 1, or if you try to refuel quickly, there may still be a small amount of kerosene in the tank 1. Even when there is no gas in the tank, kerosene blows out along with the air through the opening 3 and the gas vent hole 15, resulting in the problem of dirty hands.

Further, since the diameter of the opening 3 is limited, this conventional configuration has a large flow path pressure loss, which also has the problem of not being able to quickly supply oil and requiring a long time to supply the oil.

The present invention solves such conventional problems, and it is possible to refuel without removing the cap body 2 from the cartridge tank 1, which eliminates the inconvenience, and also prevents hands from getting dirty with kerosene. Another 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, and a cap body provided on the second liquid storage container. and an adapter that can be detachably attached to the cap body and communicates with the liquid in the first liquid storage container, and the connection between the cap body and the adapter allows at least the first liquid storage container and the first liquid storage container to be connected to each other. Two channels, an outgoing channel and a return channel, are formed between the second liquid storage container and a sponge-like liquid-absorbing material is attached to at least one of the surfaces of the cap body and the adapter that face each other. It is equipped with a liquid transport device.

Effect of the present invention With the above-described configuration, the adapter is first attached to and connected to the cap body of the second liquid storage container during liquid transportation, so that the connection between the first liquid storage container and the second liquid storage container is improved. A fuel supply pipe is formed which consists of two flow paths, an outflow path and a return flow path. In addition, since the structure has a sponge-like liquid-absorbing material attached to at least one of the coupling facing surfaces between the cap body and the adapter, when the adapter is attached to the cap body and the coupling L is closed, the sponge-like liquid absorbing material on the coupling opposing surfaces The liquid-absorbing material is compressed and becomes thinner. Next, by operating the pump unit in this state,
Liquid is conveyed from the first liquid storage container to the second liquid storage container by the pump unit. At this time, the liquid flows into the second liquid storage container through the outgoing flow path, and at the same time, the air in the second liquid storage container flows through the return flow path into the first liquid storage container. Moving. L/
Therefore, the liquid can be smoothly transported to the second liquid storage container without the liquid and air colliding with each other within the cap body during refueling. In other words, the flow path resistance due to residual air is small, and refueling can be performed quickly and in a short time, and the liquid does not leak outward from the vicinity of the joint between the adapter and the gap body, making it possible to refuel without getting your hands dirty. Further, when the liquid level in the second liquid storage container reaches a certain level, the liquid conveyed to the second liquid storage container by the pump unit returns to the first liquid storage container through the return flow path. It is safe to avoid overflowing the liquid from the second liquid storage container. Furthermore, when removing the adapter from the cap body after refueling, a sponge-like liquid-absorbing material is attached to at least one of the opposing faces of the cap body and the adapter, so when the adapter is attached to the cap body and connected, The sponge-like liquid-absorbing material on the bonding opposing surface acts so that the compressed and thinned sponge-like liquid-absorbing material expands back to its original state and absorbs the liquid near the liquid-absorbing material. In other words, when removing the adapter from the cap body after refueling, the liquid-absorbing material has the effect of wiping off the joint between the adapter and the cap body, causing the second liquid storage container to fall upside down and the cap body to move downward. However, it has the unique effect of preventing even a drop of liquid from dripping and leaving the surrounding area uncontaminated.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In Figures 1, 2, 3, 4, and 5,
The first liquid storage container 16 is a polyester tank that stores kerosene, and a control unit 19 is disposed on the upper part of a pump unit 18 having a suction unit 17. It is connected with a hose 21.

The state shown in FIG. 1 is a state in which the adapter 20 is attached and connected to the cap body 23 of the cartridge tank, which is the second liquid storage container 22, and oil is being supplied. Further, 22' is an oil amount display section.

FIG. 2 shows the connecting portion between the adapter 20 of FIG. 1 and the cap body 23 of the cartridge tank, which is the second liquid storage container 22, and the structure of the vicinity thereof. 3 and 4 show the configurations of the adapter 20 side and the cap body 23 side, respectively, when the adapter 20 and the cap body 23 are not connected. Further, FIG. 5 shows the structure of the vicinity of the mounting portion of the liquid detection element 24. First, the adapter 20 has an adapter case 29, which has a hook part 27 for hooking the coupling mouthpiece 25 on the upper end of the cap body 23, and a handle part 28 for opening and closing the claw 27. The adapter outer valve element 30 that interlocks with the case 29 is fixed with screws 31, and the inner center lower end of the adapter outer valve element 80 is provided with a valve seat of the adapter inner valve element 32 and a center hole valve seat of the cap outer valve element 83. An adapter inner valve seat body 35, which also has the function of radially sealing the valve 34, is press-fitted and fixed. The center hole valve seat 34 has a structure in which rubber is molded on the outside of the cap outer valve body 33 formed of metal, but it may also be made of elastic resin. Further, an O-ring 36 is inserted and fixed to the adapter inner valve body 32, and a conical spring 37 is attached to bias the adapter inner valve body 32 in a direction to close the adapter inner valve seat body 35. Furthermore, the lower end of the adapter outer valve body 30 A liquid-absorbing material 38 made of donut ring-shaped open foam sponge is adhered to the portion. In this embodiment, an oil-resistant grade nitrile rubber foam material was used, but other oil-resistant grade polyester-type polyurethane foams may also be used. In addition, one method of attachment is not limited to adhesion, but also mechanical clamping. A shaft hole 40, which is a part of the return flow path 39, is formed in the shaft center of the adapter outer valve body 30, and a return hole 40 of the base coupling member 41 is formed.
2, an elongated hole 43 is formed in the side surface of the adapter outer valve body 30. Further, an O-ring 45 and an O-ring 46 are provided for sealing with the outgoing flow path 44 of the cap coupling member 41. Further, the O-ring 47 fitted to the outer surface of the lower part of the cap coupling member 41 is for radially sealing between the outflow passage 44 and the outside air when the adapter 20 and the cap body 23 are coupled. A compression spring 48 provided between the adapter case 29 and the base coupling member 41 biases the adapter outer valve body 30 in a direction to close the forward passage 44 of the adapter 20 . Further, an O-link '49 fitted to the lower side surface of the adapter outer valve body 30 is for closing the outflow passage 44 of the adapter 20. The return hole 42 and the outgoing hole 50 of the adapter 20 are made of a double tubular flexible hose 2.
1f: communicates with the first liquid storage container 16 via.

Next, the cap body 23 is screwed and fixed to the cap screw part 51 of the second liquid storage container 22 and sealed with a bum packing 52. Inside the cap body 23, there is provided a cap outer valve body 33 that presses and biases the coupling base 25 with a compression spring 53, and further a compression spring 54 is provided inside the cap outer valve body 33.
The valve body 55 is provided with a cap inner valve body 55 that is pressed and energized by the cap to seal.

That is, the compression springs 53 and 54 are biasing means that always bias the cap outer valve body 33 and the cap inner valve body 55 in a direction toward closing. In addition, the cap inner valve body case 56, which is sealed and fixed integrally with the cap outer valve body 33 by positive bonding, forms the inner flow passage 57 and the outer flow passage 58 of the cap outer valve body 33 into a reliably isolated flow passage. It is something to do. A throat 60 that enlarges the opening end 59 of the return passage 89 is attached to the lower part of the cap inner valve case 56 so that its position can be adjusted up and down to some extent.

Further, as shown in FIG. 5, an example of the configuration of the vicinity of the mounting portion of the liquid detection element 24 is a ridge portion 621/! which is inserted and fixed into the mouth hole portion 61 of the first liquid storage container 16. : Through the joint body 63 that connects the pump unit 18 and the double-tubular flexible hose 21, a forward flow of liquid is sent from the first liquid storage container 16 to the second liquid storage container 22 by the pump unit 18. A passage 44 and a return passage 39 for returning air from the second liquid storage container 22 to the first liquid storage container 16 are formed. Branch flow path 6 that branches this return flow path 39
4, and a liquid detection element 24 consisting of an optical sensor having a prism 66 near the exit of the other branch channel 65 formed to have a relatively larger flow resistance than this branch channel 64. is attached by penetrating the side wall of the joint body 63. Near the liquid detection element 24 provided penetrating through the flow path side wall, and outside the side wall and at the joint body case 67.
A control section 19 including a control circuit 68, an operation switch 69, and the like is configured. Further, the open joint portion 70 communicates with the return flow path 39 and is open to the atmosphere, so that the adapter 20 can be attached to the open joint portion 70 when not transporting liquid. That is, when installed, the O-ring 47 of the adapter 20 seals and closes the atmospheric opening hole, and the claw portion 27 is hooked on the hook portion 72 to temporarily and lightly fix the adapter.

In the above configuration, when refueling, the second liquid storage container 22 is installed with the cap body 23 facing upward as shown in FIGS. 1 and 2, and the adapter 20 is attached to the cap inner valve body 55 of the cap body 23. When the inner valve seat body 35 is opposed and pushed down, the adapter inner valve body 32 opens, and the cap inner valve body 55 is pushed down by the adapter inner valve seat body 35, opening and communicating with the return flow path 39 which is the inner flow path.

At this time, the sponge-like liquid absorbing material 38 is compressed from the state shown in FIG. 3 to the state shown in FIG. 2, and the adapter inner valve seat body 35 radially seals the center hole valve seat 34 of the cap outer valve body 38. . At the same time, the O-ring 47 fitted in the outer circumferential groove of the cap coupling member 41 on the adapter 20 side radially seals the inner surface of the hole of the coupling cap 25 on the cap body 23° side, and the adapter outer valve body 30 lowers. As well as moving to
The O-ring 49, which is a part of the adapter outer valve body 30, shifts downward from the inner wall surface of the cap coupling member 41 and opens, and the adapter outer valve body 30 pushes open the cap outer valve body 33, thereby opening the outer flow path. The outgoing flow path 44 is communicated. In this way, a coaxial double pipe line partitioned into the inside and outside from the adapter 20 to the inside of the cap body 23 is formed. In addition, the hook part 27 of the adapter 20 is attached to the hook part 26 of the cap body 23.
are engaged and the bonded state between the two is maintained.

Next, in this state, by turning on the operation switch 69 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 flows into the second liquid storage container 22 through the outgoing flow path 4411i, which is the outside of the double pipe, and at the same time, the air inside the second liquid storage container 22 flows through the double pipe The liquid flows back to the first liquid storage container 16 through a return passage 39 located inside the liquid storage container 16 . Therefore, there is an effect that the liquid can be smoothly transported to the second liquid storage container 22 without the liquid and air colliding with each other within the cap body 23 during refueling. In other words, there is less flow path resistance due to residual air,
Refueling can be done quickly and in a short time, and no liquid leaks outside from the vicinity of the joint between the adapter 20 and the cap body 23, and the refueling can be done without getting the hands dirty.

In addition, as shown in Fig. 2, when refueling, the -th liquid storage container 1
The kerosene conveyed from 6 by the pump unit 18 passes through the outer flow path of the double pipe line as shown by the solid line arrow, and at the same time, the air in the second liquid storage container 22 flows through the double pipe line. By passing through the inside of the container as shown by the dashed arrow and returning to the first liquid storage container, the liquid will pass through the wide channel on the outside and the gas will pass through the narrow channel on the inside. , it is ideal for ensuring low pressure loss from the point of view of pressure drop balance between liquid and gas flow paths. Also,
Since the atmosphere opening hole 71 communicating with the return flow path 39 is provided, even if there is a temperature difference between the first liquid storage container 16 and the second liquid storage container 22, expansion and contraction of the liquid and gas will occur. Even if air pressure imbalance occurs between the first liquid storage container 16 and the second liquid storage container 22, the atmosphere opening hole 71
Air enters or exits from the tank to automatically maintain the balance of air pressure, which has the unique effect of reducing resistance to liquid transport and allowing faster refueling in a shorter time.

Furthermore, when kerosene enters up to the opening [59] of the return flow path 39 on the second liquid storage container 22 side, the return flow path 39 shown by the broken line arrow on the inside of the double pipe, which had been an air flow path, also becomes a kerosene flow path. It becomes a road. At this time, the liquid returns from the second liquid storage container 22 to the return flow path 39 in FIG. 5, and the liquid flows into both the branch flow path 864 and the branch flow path 65 as indicated by broken line arrows. When the liquid comes into contact with the prism 66 of the liquid detection element 24, the liquid detection element 24 and the restrictor 19 work to automatically stop the operation of the pump unit 18. The installation position of the liquid detection element 24 is basically a return flow! 39 or near the exit of the return flow path 39, it can be automatically stopped at any place where the return liquid comes into contact with it. However, as in this embodiment, the return flow path 39 is branched, and the liquid detection element 24 is placed in the branch path 65 having a large flow path resistance or near its outlet.
By installing the pump unit 18, when liquid remains in the return flow path 89 before starting operation of the pump unit 18, the remaining liquid is diverted to the branch path 64. which has a lower flow resistance. t and returns to the first liquid storage container 16 without touching the liquid detection element 24. Therefore, the kerosene enters the opening end 59 of the return flow path 39 on the second liquid storage container 22 side and returns to the return flow path 39. Until the kerosene starts to return to the pump unit 1,
This has the effect of preventing the operation of No. 8 from being automatically stopped.

Also, the first liquid storage container 16 and the second liquid storage container 22
By configuring the two flow paths, the outgoing flow path 44 and the return flow path 39, between the adapter 20 and the flexible double pipe 21,
In addition to being easy to attach and detach to and from the cap body 23 of the second liquid storage container 22 by freely moving it left, right, up and down, the adapter 20 can be detached from the cap body 23 after the pump unit 18 has stopped operating. Open joint part 7
0, by placing the adapter 20 in a slightly higher position, the liquid remaining in the flexible double tube 21 returns to the first liquid storage container 16 due to the drop, and then returns to the pump unit 18. This can prevent the pump unit 18 from malfunctioning at the start of operation and stopping before the second liquid storage container 22 is full.

Furthermore, when the liquid in the second liquid storage container 22 reaches the full level, it is detected that the liquid continuously acts on the liquid detection element 24 provided in the return flow path 39, and the full capacity is automatically stopped. By controlling the control circuit 68, the liquid remaining in the return flow path 39 during liquid transport returns to the first liquid storage container 16 together with the air in the second liquid storage container 22, and at that time, the return flow Even if the liquid remaining in the path 39 touches the liquid detection element 24, the pump unit 18 will not automatically stop unless the liquid acts on the liquid detection element 24 continuously. In other words, the pump unit 18 automatically completes and stops only when the liquid continuously returns to the return channel 39, such as when the second liquid storage container 22 is full. If the liquid remaining in the return channel 39 returns to the first liquid storage container 1-6 together with the air in the second liquid storage container 22, the liquid may flow intermittently or only for a short period of about 1 second. Since the liquid sensing element 24 is not touched, the control circuit 68 can be easily achieved by incorporating a delay circuit of 2 seconds or more, for example. Since the delay circuit can be a so-called CR timer circuit consisting of a resistor and a capacitor, it can be achieved at a very low cost.

Further, the configuration of the embodiment of the present invention is such that even if the automatic stop function fails, the return flow path 3 on the second liquid storage container 22 side
When the kerosene reaches the opening end 59 of 9, the kerosene will circulate between the first liquid storage container 16 and the second liquid storage container 22, and the second liquid storage container 22 will become full. A unique effect is obtained in that kerosene can be prevented from overflowing to the outside of the second liquid storage container 22.

In the case of the conventional configuration shown in FIG. 7, once the cartridge tank 1 is full, if the pump 12 continues to operate any longer, kerosene cannot be prevented from overflowing to the outside of the cartridge tank 1. Even if the pump 1 is detected to be full,
Even if a function to automatically stop the operation of 2 is added,
If the automatic stop function fails, kerosene cannot be prevented from overflowing to the outside of the cartridge tank 1.

However, in the case of the embodiment of the present invention, even if the full-volume automatic stop function fails, kerosene will not overflow outside the second liquid storage container 20.

Also, as can be seen from the above explanation, the cap body 23
By having the lower opening end 59 of the second liquid storage container 22 near the desired full depth position, the operation of the pump unit 18 is automatically stopped when the amount of oil supplied reaches the opening end 59. The level of the lubricating liquid in the second liquid storage container 22 does not rise above the opening end 59 and is kept constant. Therefore, by locating the open end 59 near the desired full depth position, the full depth can be ensured.

If the throat having an open end 59 at the bottom of the cap inner valve body case 56 is slidably adjusted in the depth direction using an O-ring seal or the like, the position of the open end 59 can be changed more or less arbitrarily, and the full depth can be adjusted. can be set arbitrarily.

Further, since the liquid detection element 24 is an optical sensor having a prism 66, it can be mounted anywhere as long as it can come into contact with even a drop of the returning liquid, and there is a degree of freedom in mounting it. Also, the return flow path 39
The liquid sensing element 24 and the control circuit 68 are integrated because the prism part passes through the side wall of the return flow path 39 and the control circuit 68 and the control part 19 such as the operation switch 69 are provided at a close position outside the side wall of the return flow path 39. You can also create a simple configuration.

In addition, the adapter 20 and the cap body 23 are hooked on the part 2.
6 and the claw portion 27, the adapter case 29 can be attached by simply pushing it in lightly, and can be removed by simply grasping the handle portion 28 lightly. In this way, the adapter 20 can be operated easily and reliably.
This has the unique effect of being able to be attached and detached.

In addition, when removing the adapter 20 from the cap body 23 after refueling, since a sponge-like liquid absorbing material 38 is attached to the surface of the adapter 20 facing the connection with the cap body 23, the cap body 20 is compressed when the hair adapter 20 is attached and connected. The sponge-like liquid-absorbing material 38 on the opposing surface of the joint, which has become thin due to the deformation, restores and expands to its original state and acts to absorb the liquid in the vicinity of the liquid-absorbing material 38. In other words, when removing the adapter 20 from the cap body 23 after refueling,
The liquid-absorbing material 38 has the effect of wiping the joint between the adapter 2o and the cap body 23, and even if the second liquid storage container 22 is turned upside down and the cap body 23 is turned downward, not a single drop of liquid will come out. It has the unique effect of preventing drips and preventing the surrounding area from getting dirty. In this embodiment, a sponge-like liquid-absorbing material 38 is attached to the surface of the adapter 20 facing the connection with the cap body 23. A similar effect can be obtained even if the configuration is equipped with 38.

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

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

(2) By press-coupling the cap body of the second liquid storage container and the adapter, two flow paths, an outgoing flow path and a return flow path, partitioned from the first liquid storage container to the inside of the second liquid storage container are created. With this structure, the liquid transport path and the residual air discharge path in the second liquid storage container can be reliably separated, resulting in a unique effect of having little flow path resistance and allowing for quick transport and refueling in a short time. be.

(3) Since the structure has a sponge-like liquid-absorbing material attached to at least one of the facing surfaces of the cap body and the adapter, when the adapter is removed from the cap body after refueling, the liquid-absorbing material will cover the adapter and the cap body. It has the effect of wiping the joint with the second liquid storage container, and even if the second liquid storage container is turned upside down and the cap body is turned downward, not a single drop of liquid will drip, and the surrounding area will not be contaminated. It has a unique effect.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view of the entire 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 liquid conveyance device in a state where the adapter and the cap body are combined, and FIG. 3 is the same. 4 is a front sectional view showing the liquid transport device in a closed state on the adapter side, FIG. 4 is a front sectional view showing the cap body side of the liquid transport device in a closed state, and FIG. 5 is a diagram showing the attachment of the liquid detection element of the liquid transport device. FIG. 6 is a partial sectional view of a conventional cartridge tank, and FIG. 7 is a partial sectional view of a conventional liquid conveying device. 18... Pump unit, 20... Adapter, 22
...Second liquid storage container, 23...Cap body,
38...Liquid absorbing material, 39...Return flow path, 44...Outbound flow path. Name of agent: Patent attorney Higashino *Takashi Baka 1 person 18-
Ponguni Shito No. 2 Diagram Diagram Diagram Diagram Diagram Diagram Funeral Diagram

Claims (1)

[Claims] a pump unit that transports the liquid in the first liquid storage container; a cap body provided on the second liquid storage container;
an adapter that can be detachably attached to the cap body and communicates with the liquid in the first liquid storage container;
The cap body and the adapter are combined to form at least two flow paths, an outgoing flow path and a return flow path, between the first liquid storage container and the second liquid storage container, and the cap body and the adapter are connected to each other. A liquid conveyance device comprising a sponge-like liquid absorbent material attached to at least one of the bonding opposing surfaces.