JP3029382U - Liquid extraction pipe - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide liquid take-out pipes 1 and 11 that can take out all liquids quickly. SOLUTION: A confluent pipe 3 including a main pipe 8 and a branch pipe 9, a valve 4 connected to one end of the main pipe 8, a thick pipe 6 communicating with the main pipe 8 through the valve 4, and a communication with the branch pipe 9. And a thin tube 7 to
The inner diameter of the thin tube 7 is smaller than the inner diameter of the thick tube 6, and the tip 71 of the thin tube 7 is projected in the axial direction more than the tip of the thick tube 6.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention belongs to a liquid extraction pipe. This liquid take-out pipe can be suitably used for quickly transferring the liquid contained in the container or accumulated in one place without leaving it in another container or another place.

[0002]

[Prior art]

 In a chemical plant, when a raw material is liquid, it is often stored in a large container such as a drum or a tank and taken out as needed. As a method of taking out, it may be possible to pump up in a small container such as a bucket and transport it to another place such as a reaction tower or a reaction tank or another container, but the transportation amount per unit time is limited. Well, spills and drops on the way will contaminate the transportation route.

Therefore, generally, a means for connecting a storage container as a transfer source and a transfer destination with a tube such as a hose or a pipe and continuously sucking or pushing out with a vacuum pump or a compressor is used.

[0004]

[Problems to be solved by the device]

 However, if the inner diameter of a conduit such as a hose or a pipe is small, the pumping speed becomes slow. However, if the inner diameter of the pipe is increased, the pumping speed (pumping amount per unit time) will be faster, but the suction pressure will be weaker, so the entire amount cannot be pumped out and A small amount of liquid remains in the bottom corner. Depending on the nature of the liquid, prescribed treatment may be required before disposal, such as dichloroethylene, which is certified as a carcinogenic chemical substance, or a surfactant that foams when washed with water. In addition, some of them, such as amide esters, are expensive and are not suitable for disposal. Therefore, an object of the present invention is to provide a liquid take-out pipe that can take out the entire amount of liquid quickly.

[0005]

[Means for Solving the Problems]

 In order to achieve the object, the liquid take-out pipe of the present invention comprises a confluent pipe consisting of a main pipe and a branch pipe, a valve connected to one end of the main pipe, and a thick pipe communicating with the main pipe through the valve. A thin tube communicating with the branch pipe is provided, and the inner diameter of the thin tube is smaller than the inner diameter of the thick tube.

According to the present invention, when there is a large amount of liquid to be taken out, the valve is opened to connect the thick pipe and the main pipe of the confluent pipe, and the inside of the pipe and the storage container are mainly through the thick pipe and the main pipe. Most of the liquid can be quickly taken out by the pressure difference with the liquid inside. The pressure source may be a vacuum pump installed on the transfer destination side or a compressor installed on the transfer source side. In the former case, the liquid is pumped in, and in the latter case, it is pushed out to pump the liquid. Then, when the remaining amount becomes too large to be taken out by the thick pipe, the valve is closed and only the thin pipe is connected to the main pipe through the branch pipe of the confluence pipe. Then, the cross-sectional area of the functioning pipe is narrowed without changing the output of the pressure source, and the pumping force is increased. Therefore, the residual liquid is taken out through the thin pipe, the branch pipe, and the main pipe in order. It is obvious that the present invention can be applied not only to movables such as containers but also to real estate such as pools and reservoirs.

[0007]

[Embodiment of device]

 The thick tube and the thin tube have a double tube structure in which a part including the tip of the thin tube is provided inside the thick tube, and the remaining part of the thin tube liquid-tightly penetrates the tube wall near the rear end of the thick tube. I like being there. The reason is that if the opening area of the liquid take-out port of the transfer source such as the storage container is large enough to accommodate the thick tube, the thick tube and the thin tube can be inserted at the same time. However, after closing the flow path from the thick pipe to the main pipe with a valve, it is necessary to take out the residual liquid with the thin pipe, so that the remaining part of the thin pipe penetrates the pipe wall near the rear end of the thick pipe liquid tightly. He circumvented the valve.

The double pipe is preferably an eccentric double pipe. Since the tip side of the thin tube cannot be inscribed in the storage container because it is inside the thick tube, a concentric double tube cannot bring the thin tube closer to the inner wall of the storage container than the radial length of the thick tube. By eccentricity, the thin tube can be brought closer to the inner wall of the storage container and the residual liquid near the inner wall can be easily taken out.

It is more preferable that the tip of the thin tube is projected in the axial direction more than the tip of the thick tube. By doing so, it is possible to prevent pressure leakage by immersing only the tip of the thin tube in the residual liquid when the residual liquid becomes small.

The thin pipe and the branch pipe may be separated from each other and connected by a pipe joint or the like. However, the branch pipe is made much longer than the main pipe, and the extension of the branch pipe also serves as the thin pipe. Is also good. When the thin tube and the branch tube are separate bodies, for example, if a second valve is provided between them, backflow can be prevented.

[0011]

【Example】

 -Embodiment 1- A first embodiment of the liquid extraction pipe of the present invention will be described with reference to the drawings. 1 is an axial sectional view showing a liquid take-out pipe of a first embodiment, and FIG. 2 is a radial sectional view taken along the line XY of FIG. The liquid take-out pipe 1 includes an eccentric double pipe 2, a confluent pipe 3, a first valve 4 and a second valve 5, and is attached to the tip of the hose H.

The eccentric double tube 2 is composed of a thick tube 6 and a thin tube 7 fixed in an eccentric position so as to be inscribed in the thick tube 6. The inner diameter of the thin tube 7 is designed to be ¼ of the inner diameter of the thick tube 6. The tip 71 of the thin tube 7 projects slightly in the axial direction from the tip of the thick tube 6, and the non-tip portion 72 of the thin tube 7 liquid-tightly seals the tube wall near the rear end of the thick tube 7. Penetrates into.

The merging pipe 3 is composed of a main pipe 8 having the same diameter as the thick pipe 6, and a branch pipe 9 having the same diameter as the thin pipe 7 and merging to the side surface of the main pipe 8. The main pipe 8 is connected to the thick pipe 6 via the first valve 4, and the branch pipe 9 is connected to the thin pipe 7 via the second valve 5.

Although not shown, the other end of the hose H communicates with the reaction tank. The procedure for transferring the liquid raw material from the drum, for example, to the reaction tank using the liquid take-out pipe 1 is as follows.

First, the tip of the eccentric double tube 2 is immersed in the liquid in the drum can. When the liquid is volatile or toxic, the area of the liquid outlet of the drum can is usually small to protect the operator, but since it is a double pipe, only the thick pipe 6 can be inserted. If the size is secured, the thick tube 6 and the thin tube 7 can be inserted at the same time. Then, a vacuum pump (not shown) is driven to reduce the pressure inside the reaction tank. The first valve 4 and the second valve 5 are opened to connect the thick pipe 6 to the main pipe 8 and the thin pipe 7 to the branch pipe 9, respectively. As a result, each tube of the eccentric double tube 2 communicates with the reaction tank through the hose H, so that each tube is in a depressurized state as well as the reaction tank, and due to the pressure difference between the liquid inside the tube and the liquid inside the drum, It is transferred to the reaction tank through the hose H. Since the thick pipe 6 and the main pipe 8 communicate with each other, most of the liquid is transferred in a short time.

Then, when the amount of liquid remaining in the drum can becomes small and suction is not possible, the first valve 4 is closed and only the thin tube 7 is connected to the reaction tank via the branch pipe 9 and the main pipe 8. If this is done, the cross-sectional area of the functioning pipe will be narrowed, and the pumping force will increase again without changing the output of the vacuum pump, and the residual liquid will be transferred.

At this time, even if the residual liquid collects in the bottom corner of the drum can, the thin tube 7 is inscribed in the thick tube 6 and the tip thereof protrudes beyond that of the thick tube 6, so the tip of the thin tube 7 The residual liquid can be completely sucked by abutting on the bottom corner of the drum. When the removal is completed, the driving of the vacuum pump is stopped. By closing the second valve 5, it is possible to prevent backflow after the vacuum pump is stopped even if liquid remains in the tube.

Second Embodiment A second embodiment of the liquid extraction pipe of the present invention will be described with reference to the drawings. FIG. 3 is an axial sectional view showing a liquid take-out pipe of the second embodiment. The liquid take-out pipe 11 includes the confluent pipe 3, the first valve 4, and the second valve 5, and is the same as the first embodiment in that it is attached to the tip of the hose H. However, the tip side of the thin tube 7 is provided inside the large tube 6 in the first embodiment, whereas in the present example, the entire thin tube 7 is provided parallel to the outer side of the thick tube 6 and fixed by the fixing band 61. It is different in that it is done.

As described above, in this example, since the thin tube 7 is outside the thick tube 6, the thin tube 7 can be inscribed in a storage container such as a drum can or a tank, and the residual liquid near the inner wall of the storage container can be easily removed. Can be taken out.

[0020]

[Effect of device]

 As described above, the liquid take-out pipe of the present invention can quickly and completely transfer the liquid from the transfer source to the transfer destination. Therefore, regardless of the property of the liquid, the time and effort of the disposal process can be reduced. Further, when the liquid is the raw material for the chemical reaction, the cost can be reduced.

[Brief description of drawings]

FIG. 1 is an axial sectional view showing a liquid extraction pipe of a first embodiment.

FIG. 2 is a sectional view taken along line XY of FIG.

FIG. 3 is an axial cross-sectional view showing a liquid extraction pipe of a second embodiment.

[Explanation of symbols]

 1,11 Liquid removal pipe 2 Eccentric double pipe 3 Confluence pipe 4 First valve 5 Second valve 6 Thick pipe 7 Thin pipe 8 Main pipe 9 Branch pipe H Hose

Claims (6)

[Scope of utility model registration request] 1. A confluence pipe comprising a main pipe and a branch pipe, a valve connected to one end of the main pipe, a thick pipe communicating with the main pipe via the valve, and a thin pipe communicating with the branch pipe, A liquid take-out pipe having an inner diameter smaller than that of a thick pipe. 2. The thick tube and the thin tube are partially provided inside the thick tube including the tip of the thin tube, and the remaining part of the thin tube is a double tube that penetrates the tube wall of the thick tube in a liquid-tight manner. The liquid extraction pipe according to claim 1. 3. The liquid extraction pipe according to claim 2, wherein the double pipe is an eccentric double pipe. 4. The liquid take-out pipe according to claim 1, wherein the tip of the thin tube projects more axially than the tip of the thick tube. 5. The liquid take-out pipe according to claim 1, wherein the thin pipe and the branch pipe are continuous and integrated. 6. The liquid take-out pipe according to claim 1, further comprising a second valve provided between the thin tube and the branch tube.