CN219623432U - Laboratory leak-proof ventilating duct - Google Patents

Abstract

The utility model discloses a laboratory anti-leakage ventilating duct which comprises an outer pipe body internally provided with an inner pipe body, wherein a preset interval is kept between the inner pipe body and the outer pipe body to form a clamping cavity, and the inner wall of the outer pipe body is provided with a spiral coiled hemp rope ring. The laboratory leakage-proof ventilating duct provided by the utility model has a simple structure, the design adopts a double-layer pipe design, the space between the inner pipe body and the outer pipe body is kept, the cold resistance is increased by adding a hemp rope ring on the inner wall of the outer pipe body, and the influence of external low temperature on the inner pipe body is reduced.

Description

Laboratory leak-proof ventilating duct

Technical Field

The utility model relates to the technical field of air pipe production, in particular to a laboratory leakage-proof ventilating duct.

Background

Laboratory exhaust systems are a very important component, and some chemical laboratories are prone to the risk of inducing gas mixing bursts if the gases cannot be exhausted in time during the course of the experiment.

The exhaust system is divided into an indoor component and an outdoor component, and the outdoor component is responsible for carrying out centralized transportation on the gas pumped and exhausted by the indoor component for treatment so as to avoid the atmospheric pollution and other pollution problems caused by direct exhaust.

In the prior art, an outdoor component adopts a single-layer pipe, the material of the single-layer pipe is an aluminum alloy pipe body or an iron pipe body, and paint is respectively smeared inside and outside the pipe body for corrosion prevention. However, the pipeline is always kept outside, and the metal itself is deformed by a certain coefficient due to the variation difference of the air temperature under the action of the outside environment, so that the sealing performance of the pipeline is influenced for a long time.

Disclosure of Invention

The utility model aims to provide a laboratory leakage-proof ventilating duct, which is used for solving the problems.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a laboratory leak protection air pipe, includes the outer body that embeds interior body, interior body with keep the predetermined interval between the outer body in order to form the clamp chamber, outer body inner wall is provided with spiral wound's hemp rope ring.

Preferably, the hemp rope loops are two layers.

Preferably, the hemp rope ring has a cross section of 3cm.

Preferably, the outer tube body includes a plurality of main body tubes and a telescopic ring portion for connecting each two of the main body tubes.

Preferably, the outer tube body comprises a telescopic ring part;

the inner pipe body comprises a steel ring, and an elastic connecting piece is arranged between the steel ring and the telescopic ring part.

Preferably, the inner tube body further comprises a plurality of corrugated tube bodies, and each two corrugated tube bodies are connected through one steel ring.

Preferably, the telescopic length of the corrugated pipe body is 2mm-5mm.

Preferably, the elastic connecting piece is in an arch structure, and two supporting legs of the arch structure are arranged on the side walls of the two opposite sides of the inner side groove of the telescopic ring part.

Preferably, the corrugated pipe body is a plastic corrugated pipe body.

In the technical scheme, the laboratory leakage-proof ventilating duct provided by the utility model has the following beneficial effects: the double-layer pipe design is adopted, the space between the inner pipe body and the outer pipe body is kept, the cold resistance is improved by adding the hemp rope ring on the inner wall of the outer pipe body, and the influence of external low temperature on the inner pipe body is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of an embodiment of the present utility model;

fig. 3 is an enlarged schematic view of a detail structure provided in an embodiment of the present utility model.

Reference numerals illustrate:

1. an inner tube body; 11. a bellows body; 12. a steel ring; 2. an outer tube body; 21. a main body tube; 22. a telescopic ring part; 3. clamping a cavity; 5. an elastic connection member; 8. a hemp rope ring.

Description of the embodiments

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, a laboratory leakage-proof ventilation duct comprises an outer tube body 2 with an inner tube body 1 inside, wherein a predetermined distance is kept between the inner tube body 1 and the outer tube body 2 to form a clamping cavity 3, and a hemp rope ring 8 spirally wound is arranged on the inner wall of the outer tube body 2.

Further, the rope loop 8 has two layers.

Furthermore, the hemp rope ring 8 has a cross section of 3cm.

The outer tube body 2 in the above embodiment includes a plurality of main body tubes 21 and a telescopic ring portion 22 for connecting each two main body tubes 21. And the inner pipe body 1 comprises a steel ring 12, and an elastic connecting piece 5 is arranged between the steel ring 12 and a telescopic ring part 22.

Wherein: the inner pipe body 1 further comprises a plurality of corrugated pipe bodies 11, and each two corrugated pipe bodies 11 are connected through a steel ring 12. As can be seen from fig. 2, when the outer tube 2 is cooled or heated, the main tube 21 stretches and pulls or pushes the expansion ring 22 to deform. At the same time, the bellows body 11 expands and contracts due to the cooling or heating of the inner tube body 1. So that both remain flexible.

It should be noted that the bellows body 11 has a telescopic length of 2mm to 5mm, and the telescopic ring portion 22 has a telescopic length of 2mm to 5mm in synchronization. The default 25 degrees celsius state is in control.

Further, as can be seen in fig. 3, the elastic connection member 5 is in an arch structure, and two legs of the arch structure are disposed on the side walls of the inner side of the expansion ring 22 opposite to the groove. Therefore, the inner pipe body 1 and the outer pipe body 2 are elastically connected, and the inner pipe body 1 has certain buffering performance, so that the pipeline is prevented from being damaged by vibration caused by earthquake or external cause.

In the above embodiment, the double-layer tube design is adopted, the space between the inner tube body 1 and the outer tube body 2 is kept, the cold resistance is increased by adding the hemp rope ring 8 on the inner wall of the outer tube body 2, and the influence of the external low temperature on the inner tube body 1 is reduced.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims (9)

1. The utility model provides a laboratory leak protection air pipe, its characterized in that includes outer body (2) that embeds interior body (1), interior body (1) with keep predetermined interval in order to form clamp chamber (3) between outer body (2), outer body (2) inner wall is provided with spiral winding's twine ring (8).

2. A laboratory leak-proof ventilation duct according to claim 1, characterized in that the twine loops (8) are in total in two layers.

3. A laboratory leak-proof ventilation duct according to claim 1, characterized in that the hemp rope loop (8) has a cross section of 3cm.

4. A laboratory leak-proof ventilation duct according to claim 1, characterized in that the outer tubular body (2) comprises a plurality of main tubes (21) and a telescopic ring portion (22) for connecting each two of the main tubes (21).

5. A laboratory leak-proof ventilation duct according to claim 1, characterized in that the outer tubular body (2) comprises a telescopic ring portion (22);

the inner pipe body (1) comprises a steel ring (12), and an elastic connecting piece (5) is arranged between the steel ring (12) and the telescopic ring part (22).

6. A laboratory leak-proof ventilation duct according to claim 5, characterized in that the inner tubular body (1) further comprises a plurality of corrugated tubular bodies (11), each two corrugated tubular bodies (11) being connected by one of the steel rings (12).

7. A laboratory leak-proof ventilation duct according to claim 6, characterized in that the bellows body (11) has a telescopic length of 2mm-5mm.

8. Laboratory leakage-proof ventilation duct according to claim 5, characterized in that the elastic connection (5) is embodied as an arch, and in that both legs of the arch are arranged on the side walls of the telescopic ring (22) on opposite sides of the inner recess.

9. A laboratory leak-proof ventilation duct according to claim 6, characterized in that the bellows body (11) is a plastic bellows body.