JP2020159409A - Liquid supply pipe - Google Patents

Abstract

To provide a liquid supply pipe that allows liquid supply work to be performed without machining a side surface of a container and without removing a lid.SOLUTION: A liquid supply pipe 2 is intended to supply liquid to a container 1. A pipe part 20 attached so as to penetrate a lid of the container 1, and a hose 21 for supplying the liquid are detachably connected by a male coupler 23 and a female coupler 22. By using the liquid supply pipe 2 according to the present invention, liquid supply work can be performed without machining a side surface of the container 1 and without removing the lid.SELECTED DRAWING: Figure 1

Description

The present invention relates to a liquid feeding pipe.

For example, a strongly acidic liquid such as aqua regia is used to recover precious metals from electrical appliances and semiconductor products. In a recycling factory that collects such precious metals, strongly acidic liquids are sent from the main tank to a container such as a polydrum and stored. Further, when a strongly acidic liquid is sent from the main tank to the container, for example, a U-shaped nozzle is provided at the tip of the hose, hooked on the edge of the container, and the liquid is sent by operating the pump. Conventionally, for example, the liquid supply device of Patent Document 1 is known as a means used for such liquid feeding.

Japanese Unexamined Patent Publication No. 2001-132681

When sending liquid, the ON / OFF operation is on the pump side, so in order to work alone, there must be a container such as a poly drum that sends liquid within reach, a switch with one hand and a switch with the other. I was doing the liquid feeding work by holding the tip of the nozzle with one hand. However, it is necessary to open the lid of the container and press the nozzle for work, and there is a risk that the nozzle that is being pressed may be bounced off when it comes off the hand. In addition, when checking the height of the liquid level in the container, it was necessary to completely stop the liquid feeding and then remove the lid and look into it.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a liquid feeding pipe capable of performing liquid feeding work without processing the side surface of the container and without removing the lid.

In order to solve the above problems, the present inventor first processed the side surface of the container and attached the pipe to the side surface by union (screw). As a result, the risk of liquid intake could be eliminated. However, when installing pipes in a union, the work is troublesome and the packing used for installation may be dropped. In addition, it was troublesome to remove the lid of the container to check the liquid level during the work. The present invention has been obtained through such trial and error.

That is, according to the present invention, a liquid feeding pipe for feeding liquid to a container, in which a piping portion attached through the lid of the container and a hose to feed liquid are formed by a male coupler and a female coupler. A liquid feeding pipe is provided, which is characterized by being removably connected.

In this liquid feeding pipe, the piping portion may have a horizontal portion arranged above the lid of the container and an upper and lower portions connected to the horizontal portion and penetrating the lid of the container. Further, a part of the lid of the container may be transparent. Further, a part of the lid of the container may be opened and closed.

By using the liquid feeding pipe of the present invention, it becomes possible to carry out the liquid feeding work without processing the side surface of the container and without removing the lid.

It is explanatory drawing of the liquid feeding pipe which concerns on embodiment of this invention, and shows the state which the pipe part and the hose are separated. It is explanatory drawing of the liquid feeding pipe which concerns on embodiment of this invention, and shows the state which connected the pipe part and the hose. It is an enlarged cross-sectional view for demonstrating the male coupler and the female coupler, and shows the state which the piping part and the hose are separated. It is an enlarged cross-sectional view for demonstrating the male coupler and the female coupler, and shows the state which connected the piping part and the hose.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present specification and the drawings, elements having substantially the same functional configuration are designated by the same reference numerals to omit duplicate description.

1 and 2 are explanatory views of a liquid feeding pipe according to an embodiment of the present invention, FIG. 1 shows a state in which the pipe portion 20 and the hose 21 are separated, and FIG. 2 shows a state in which the pipe portion 20 is separated. And the hose 21 are connected to each other.

The container 1 is, for example, a polydrum and can store a strongly acidic liquid such as aqua regia. A part of the lid of the container 1 is formed by a transparent window 10. The window 10 is made of a transparent plate made of vinyl chloride having a thickness of about 10 mm. The inside of the container 1 can be seen from the outside through the window 10. Further, on the side of the lid of the container 1, an opening / closing cover 11 is provided so that a part of the lid can be opened / closed. By opening the opening / closing cover 11, the inside of the container 1 can be directly visually observed.

The liquid feeding pipe 2 according to the embodiment of the present invention includes a piping portion 20 attached so as to penetrate the lid of the container 1 and a hose 21 for sending a liquid such as a strongly acidic liquid from a main tank (not shown). ing. A female coupler 22 is attached to the tip of the piping portion 20, and a male coupler 23 is attached to the tip of the hose 21. The tip of the hose 21 is detachably connected to the tip of the piping portion 20 by the female coupler 22 and the male coupler 23.

The piping portion 20 has a horizontal portion 20a arranged above the lid of the container 1 and an upper and lower portions 20b connected to the horizontal portion 20a and penetrating the lid of the container 1. A female coupler 22 is attached to the tip of the horizontal portion 20a of the piping portion 20. The upper and lower portions 20b penetrate the lid of the container 1 in the vertical direction, and the lower ends of the upper and lower portions 20b are open above the inside of the container 1. The piping portion 20 is made of, for example, an L-shaped elbow pipe made of vinyl chloride.

A pump 25 is attached to the hose 21, and a liquid such as a strongly acidic liquid stored in a main tank (not shown) is sent into the hose 21 by the operation of the pump 25.

3 and 4 are enlarged cross-sectional views for explaining the male coupler 23 and the female coupler 22, FIG. 3 shows a state in which the piping portion 20 and the hose 21 are separated, and FIG. 4 is a piping portion 20. And the hose 21 are connected to each other.

The male coupler 23 has a cylindrical insertion portion 30, and a recess 31 for inserting the cam portion 37 is provided on the outer peripheral surface of the insertion portion 30. The female coupler 22 has a receiving portion 35 that receives the insertion portion 30 of the male coupler 23, and the cam portion 37 of the cam lever 36 is free to project from the receiving portion 35.

The cam lever 36 is rotatable about the shaft 38, and as shown in FIG. 3, when the cam lever 36 is rotated about the shaft 38 so as to open outward from the piping portion 20, the cam portion 37 accepts the cam lever 36. It is in a state of being retracted outward from the portion 35. On the other hand, as shown in FIG. 4, when the cam lever 36 is rotated around the shaft 38 so as to be close to the outer surface of the piping portion 20, the cam portion 37 is in a state of protruding into the receiving portion 35.

As shown in FIG. 3, in a state where the cam lever 36 is rotated so as to open outward from the piping portion 20 and the cam portion 37 is retracted outward from the receiving portion 35, the insertion portion 30 of the male coupler 23 is inserted into the female. It can be inserted into the receiving portion 35 of the coupler 22, and the inserting portion 30 of the male coupler 23 can be removed from the receiving portion 35 of the female coupler 22. On the other hand, as shown in FIG. 4, with the insertion portion 30 of the male coupler 23 inserted into the receiving portion 35 of the female coupler 22, the cam lever 36 is rotated so as to approach the outer surface of the piping portion 20, and the cam portion When the 37 is projected into the receiving portion 35, the cam portion 37 enters the recess 31 provided on the outer peripheral surface of the inserting portion 30 of the male coupler 23, whereby the male coupler 23 inserted into the receiving portion 35 of the female coupler 22 The insertion portion 30 of is fixed. In this way, the tip of the hose 21 is connected to the tip of the piping portion 20.

A packing (O-ring) 40 is arranged at the innermost part of the receiving portion 35 of the female coupler 22, and as shown in FIG. 4, when the tip of the piping portion 20 and the tip of the hose 21 are connected, the male is The tip surface of the insertion portion 30 of the coupler 23 is in close contact with the packing 40, whereby the tip of the piping portion 20 and the tip of the hose 21 are connected in a watertight state.

A plurality of cam levers 36 are attached to the female coupler 22. Therefore, the insertion portion 30 of the male coupler 23 inserted into the receiving portion 35 of the female coupler 22 can be firmly fixed by the plurality of cam portions 37.

In the liquid feeding pipe 2 according to the embodiment of the present invention configured as described above, the tip of the pipe portion 20 and the tip of the hose 21 are easily watertightened by the female coupler 22 and the male coupler 23. You can connect with. Then, by operating the pump 25 in a state where the tip of the piping section 20 and the tip of the hose 21 are connected, a liquid such as a strongly acidic liquid stored in a main tank (not shown) is removed from the hose 21 and the piping section 20. The liquid can be sent to the container 1 via. As described above, by using the liquid feeding pipe 2 of the present invention, the liquid feeding work can be performed without processing the side surface of the container 1 and without removing the lid of the container 1.

Since it is not necessary to remove the lid of the container 1, there is no need to worry about the operator being exposed to liquid due to bounce. Further, since the inside of the container 1 can be seen from the outside through the window 10 formed on the lid of the container 1, it is not necessary to remove the lid to check the height of the liquid level in the container 1. It is also possible to directly visually check the inside of the container 1 by opening the opening / closing cover 11 provided on the side of the lid of the container 1.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the technical idea described in the claims, and of course, the technical scope of the present invention also includes them. It is understood that it belongs to.

For example, the female coupler 22 and the male coupler 23 that connect the piping portion 20 and the hose 21 are not limited to the structure shown in the figure, and may have other forms that can be detachably connected.

Hereinafter, an embodiment of the present invention will be described.
(Example 1)
As shown in FIG. 1, a hose 21 (made of PVC with an inner diameter of φ25 mm) of 5 m was prepared and connected to a main tank (omitted in the figure) via a motor pump (pump) 25. The pumped liquid was supplied to a polydrum (container) 1 having a capacity of 200 L. As the motor pump 25, a chemical handy pump manufactured by Meito Kakoki Co., Ltd. was used, and pumping was performed at 48 L / min with a drive power supply of AC100 V.
For the connection from the hose 21 to the polydrum 1, a piping portion 20 (water faucet elbow) penetrated through the lid of the polydrum is used, and the piping portion 20 and the hose 21 are female couplers 22 and male couplers 23 and leak as shown in FIG. Connected so as not to. A part of the upper surface of the lid of the polydrum was formed of a transparent vinyl chloride plate (10t), and a part of the lid was provided with a window 10 that could be opened and closed by the transparent vinyl chloride plate (5t).

The operation of driving the motor pump 25 to pump up the solution in the main tank and sending 200 L to the poly drum 1 was performed on a total of five poly drums. A piping portion 20 is provided in advance on the lid of each polydrum so that the polydrum can be replaced simply by replacing the hose 21.
The time required for the liquid feeding operation of 1000 L was 1400 seconds in total, and 280 seconds were required for each polydrum.
In the first embodiment, since the couplers are connected so as to be detachable, the workability at the time of replacing the poly drum is good, so that the work can be performed safely and smoothly.

(Comparative Example 1)
The U-shaped discharge pipe attached to the hose 21 from the main tank was hooked on the polydrum, and the solution from the main tank was sent to a total of five polydrums in the same manner as in Example 1.
The time required for the liquid feeding operation of 1000 L was 2000 seconds in total, and 400 seconds was required for each polydrum.
In Comparative Example 1, it was necessary to hold the U-shaped discharge pipe by hand, and the work was performed by opening the lid of the polydrum, so that liquid splashing occurred.

(Comparative Example 2)
A pipe was unioned (screwed) on the side surface of the polydrum 1 to attach a hose 21, and the solution from the main tank was sent to a total of five polydrums in the same manner as in Example 1.
The time required for the liquid feeding work of 1000 L was 2500 seconds in total, and it took 500 seconds for each polydrum.
In Comparative Example 2, the work of attaching the hose 21 to the next polydrum by a union was troublesome and time-consuming. In addition, liquid leakage from the union part also occurred. Furthermore, it took time to check the liquid level because the lid had to be removed.

The present invention can be used for feeding liquids.

1 Container 2 Liquid supply piping 10 Window 11 Opening / closing cover 20 Piping part 20a Horizontal part 20b Upper and lower part 21 Hose 22 Female coupler 23 Male coupler 25 Pump 30 Insertion part 31 Recession 35 Receiving part 36 Cam lever 37 Cam part 38 Shaft 40 Packing

Claims (4)

It is a liquid feeding pipe for sending liquid to a container.
A liquid feeding pipe characterized in that a piping portion attached through the lid of a container and a hose for liquid feeding are detachably connected by a male coupler and a female coupler. The feed according to claim 1, wherein the piping portion has a horizontal portion arranged above the lid of the container and an upper and lower portions connected to the horizontal portion and penetrating the lid of the container. Liquid piping. The liquid feeding pipe according to claim 1 or 2, wherein a part of the lid of the container is transparent. The liquid feeding pipe according to any one of claims 1 to 3, wherein a part of the lid of the container can be opened and closed.

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