Liquid drainage device

Abstract

The liquid drainage device comprises a drainage outer tube and a movable inner tube, an end cover is arranged at one end of the drainage outer tube, a plurality of exhaust holes are formed in the end cover, a center hole is formed in the end cover, and a liquid inlet connector is arranged at the other end of the drainage outer tube. The movable inner tube is inserted into the drainage outer tube from a center hole of the end cover, the outer diameter of the movable inner tube is equal to the diameter of the center hole, and a piston round shell is fixed to the end of the movable inner tube; in conclusion, the drainage device mainly comprises the liquid inlet one-way valve, the liquid outlet one-way valve, the drainage outer tube and the movable inner tube, liquid can be drained out by repeatedly drawing and pulling the movable inner tube, and the drainage device is simple in overall structure, high in working efficiency, low in manufacturing cost, capable of sucking various kinds of liquid and good in using effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid drainage, and in particular relates to a liquid drainer. Background Art

[0002] At present, the suction and transfer of liquids on the market mainly adopt electric suction pumps, hose suction and drainage, etc. Electric suction pumps need electricity as power, are restricted by the environment, and have high cost. Hose suction and drainage often need to guide the liquid in a narrow way to achieve the purpose of suction, which is harmful to human health, such as suction of oil in oil tanks, suction during pesticide preparation, etc. Utility Model Content

[0003] The utility model aims to provide a liquid drainer to solve the technical problem that the existing liquid suction structure cannot meet the market demand.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The liquid drainer comprises a drainage outer tube and a movable inner tube, one end of the drainage outer tube is provided with an end cap, the end cap is provided with a plurality of exhaust holes, the end cap has a central hole, and the other end of the drainage outer tube is provided with a liquid inlet joint;

[0006] The movable inner tube is inserted into the drainage outer tube from the center hole of the end cover, the outer diameter of the movable inner tube is equal to the diameter of the center hole, a piston round shell is fixed at the end of the movable inner tube, the piston round shell has an open inner cavity, the inner cavity of the piston round shell is connected with the inner cavity of the movable inner tube, and a plurality of sealing rings are arranged on the outer wall of the piston round shell, which are used to seal the gap between the outer wall of the piston round shell and the inner wall of the drainage outer tube;

[0007] One end of the movable inner tube passes outward from the center hole of the end cover, the end of the movable inner tube is connected to a liquid outlet joint, and a liquid outlet one-way valve is arranged in the end of the movable inner tube, and a liquid inlet one-way valve is arranged in the end of the drainage outer tube connected to the liquid inlet joint.

[0008] Furthermore, the end cap is connected to the end of the drainage outer tube by means of threads.

[0009] Furthermore, the liquid inlet connector is connected to the end of the drainage outer tube through threads, and the liquid outlet connector is connected to the end of the movable inner tube through threads.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model mainly includes a liquid inlet one-way valve, a liquid outlet one-way valve, a drainage outer tube and a movable inner tube. The liquid can be drained out by repeatedly pulling and pulling the movable inner tube. The overall structure is simple, the working efficiency is high, the production cost is low, various liquids can be sucked, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is an axonometric view of the liquid drainer;

[0013] Figure 2 An exploded view of a liquid drain;

[0014] Figure 3 It is a front view of the liquid drain;

[0015] Figure 4 for Figure 3 Cross-sectional view at AA in the middle. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The present invention is further described in detail below in conjunction with the embodiments.

[0018] like Figure 1-4 As shown, a specific embodiment of a liquid drainer provided by the utility model:

[0019] The liquid drainer comprises a drainage outer tube 1 and a movable inner tube 2, wherein an end cap 3 is threadedly mounted on one end of the drainage outer tube 1, a plurality of exhaust holes 4 are arranged on the end cap 3, the end cap 3 has a central hole, and a liquid inlet connector 6 is threadedly mounted on the other end of the drainage outer tube 1;

[0020] The movable inner tube 2 is inserted into the drainage outer tube 1 from the center hole of the end cover 3. The outer diameter of the movable inner tube 2 is equal to the diameter of the center hole. A piston round shell 7 is fixed to the end of the movable inner tube 2. The piston round shell 7 has an open inner cavity. The inner cavity of the piston round shell 7 is connected to the inner cavity of the movable inner tube 2. The outer wall of the piston round shell 7 is provided with a plurality of sealing rings 8. The sealing rings 8 are used to seal the gap between the outer wall of the piston round shell 7 and the inner wall of the drainage outer tube 1.

[0021] One end of the movable inner tube 2 protrudes outward from the center hole of the end cover 3, and a liquid outlet joint 9 is threadedly installed on the end of the movable inner tube 2, and a liquid outlet one-way valve 10 is arranged in the end of the movable inner tube 2, and a liquid inlet one-way valve 11 is arranged in the end of the drainage outer tube 1 connected to the liquid inlet joint 6.

[0022] The working principle of the liquid drainage device of this embodiment for liquid suction is as follows: the liquid inlet joint 6 is connected to the liquid inlet pipe, and the liquid outlet joint 9 is connected to the liquid outlet pipe. The liquid inlet pipe and the liquid outlet pipe can be various types of pipes, such as four-inch, six-inch or one-inch pipes, and then the liquid inlet pipe is inserted into the container containing liquid, the drainage outer tube 1 is held tightly with one hand, and the end of the movable inner tube 2 is held tightly with the other hand, and then the movable inner tube 2 is pulled outward, and the gas in the drainage outer tube 1 is discharged outward from the exhaust hole 4, so that a negative pressure is generated in the drainage outer tube 1. Under the action of the negative pressure, the liquid can flow into the drainage outer tube 1 along the liquid inlet pipe through the liquid inlet check valve 11, and then the movable inner tube 2 is pushed inward to reset it. Under the squeezing of the movable inner tube 2, the liquid flows out through the liquid outlet check valve 10 and the liquid outlet pipe. After repeatedly pulling and pulling the movable inner tube 2, the liquid can be continuously extracted.

[0023] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid drain, characterized in that: It comprises a drainage outer tube and a movable inner tube, one end of the drainage outer tube is provided with an end cover, a plurality of exhaust holes are provided on the end cover, the end cover has a central hole, and the other end of the drainage outer tube is provided with a liquid inlet joint; The movable inner tube is inserted into the drainage outer tube from the center hole of the end cover, the outer diameter of the movable inner tube is equal to the diameter of the center hole, a piston round shell is fixed at the end of the movable inner tube, the piston round shell has an open inner cavity, the inner cavity of the piston round shell is connected with the inner cavity of the movable inner tube, and a plurality of sealing rings are arranged on the outer wall of the piston round shell, which are used to seal the gap between the outer wall of the piston round shell and the inner wall of the drainage outer tube; One end of the movable inner tube passes outward from the center hole of the end cover, the end of the movable inner tube is connected to a liquid outlet joint, and a liquid outlet one-way valve is arranged in the end of the movable inner tube, and a liquid inlet one-way valve is arranged in the end of the drainage outer tube connected to the liquid inlet joint.

2. The liquid drain device according to claim 1, characterized in that: The end cap is connected to the end of the drainage outer tube through threads.

3. The liquid drain device according to claim 1, characterized in that: The liquid inlet joint is connected to the end of the drainage outer tube through threads, and the liquid outlet joint is connected to the end of the movable inner tube through threads.

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