CN216911366U

CN216911366U - Automatic cleaning device for air sampling pipeline

Info

Publication number: CN216911366U
Application number: CN202220682751.6U
Authority: CN
Inventors: 李志强; 王杰; 王哲; 刘坤泰
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-07-08
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses an automatic cleaning device for an air sampling pipeline, which comprises a main through pipe consisting of a first body and a second body, wherein the upper end of the main through pipe is provided with a first air outlet, one side of the first body is a plane and is provided with a round hole, the second body is detachably arranged on the plane side of the first body, the cross section of the second body is in an arc shape, so that a cavity can be formed after the second body is connected with the first body, a back flushing pipe is fixedly arranged on an opening on the side wall of the second body, one end of the back flushing pipe, which is close to the first body, is a second air outlet and is connected with a turnover cover through a torsional spring assembly, and the other end of the back flushing pipe is an air inlet; the outer diameter of the turnover cover is the same as the inner diameter of the main through pipe, and the inner diameter of the round hole is larger than the outer diameter of the turnover cover, so that the turnover cover can turn over for 90 degrees towards the first body under the action of airflow flowing in from the air inlet and blocks the main through pipe to prevent the airflow from entering the lower part of the main through pipe. The utility model simplifies the cleaning process of the fire fighting pipeline and effectively prevents instruments connected with the pipeline from being damaged by cleaning airflow.

Description

Automatic cleaning device for air sampling pipeline

Technical Field

The utility model relates to a cleaning device of an air sampling smoke alarm system, in particular to an automatic cleaning device for an air sampling pipeline.

Background

The air sampling smoke alarm system is a smoke detection alarm system which actively pumps an air sample into a laser detection system through a sampling pipeline by an air pump to carry out high-sensitivity detection and is analyzed and judged by a microcomputer so as to early judge whether a potential fire exists. Because the air sampling smoke detection system has the advantages of high sensitivity, wide sensitivity range, flexible installation mode and simple and convenient maintenance, and can be applied to special spaces which cannot be effectively protected by other traditional smoke detection systems, the air sampling smoke detection system is more and more widely applied to the field of smoke detection.

However, under long-term use, dust is easily accumulated in the sampling pipe of the air sampling smoke alarm system, and even the sampling hole is blocked, so that the sampling pipe needs to be cleaned in a back blowing mode to ensure the detection accuracy of the air sampling smoke alarm system.

Disclosure of Invention

The utility model aims to provide an automatic cleaning device for an air sampling pipeline, which simplifies the cleaning process of the sampling pipeline and can effectively prevent an instrument connected with the sampling pipeline from being damaged by cleaning airflow.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an automatic cleaning device for an air sampling pipeline comprises a main through pipe consisting of a first body and a second body, wherein the upper end of the main through pipe is provided with a first air outlet, one side of the first body is a plane and is provided with a round hole, the second body is detachably arranged on one side of the plane of the first body, the cross section of the second body is arc-shaped, so that a cavity can be formed after the second body is connected with the first body, a back-blowing pipe perpendicular to the second body is fixedly arranged on an opening of the side wall of the second body, one end, close to the first body, of the back-blowing pipe is provided with a second air outlet and is connected with a circular turnover cover through a torsion spring assembly, and the other end of the back-blowing pipe is an air inlet;

the outer diameter of the turnover cover is the same as the inner diameter of the main through pipe, the inner diameter of the round hole formed in the side face of the first body is larger than the outer diameter of the turnover cover, so that the turnover cover can turn over for 90 degrees towards the first body under the action of high-pressure airflow flowing in from the air inlet, turn over into the main through pipe through the round hole and block the main through pipe to prevent the airflow from entering the lower part of the main through pipe.

Furthermore, the torsion spring assembly comprises a torsion spring shaft fixedly connected with the second body and a torsion spring sleeved on the torsion spring shaft;

upset lid bottom fixedly connected with connecting block, the connecting block seted up with torsional spring axle assorted hole make it rotate with torsional spring axle to be connected, the both ends of torsional spring joint respectively the second body with on the connecting block.

Furthermore, two side edges of the first body are fixedly provided with slide lock rails;

and the two sides of the second body are fixedly provided with sliding lock heads so that the second body is movably connected with the first body.

Furthermore, an air inlet of the blowback pipe is provided with an internal thread used for being connected with the high-pressure air pipe joint.

Further, the internal diameter of the blowback pipe gradually increases from the air inlet to the air outlet, the internal diameter of the air outlet is 25mm, and the internal diameter of the air inlet 101 is 10 mm.

Further, the inner diameter of the main through pipe is 25 mm.

Further, a sealing gasket is arranged on the turnover cover.

Compared with the prior art, the utility model has the following technical effects:

when the pipeline needs to be cleaned, the high-pressure airflow entering the blowback pipe from the high-pressure air pipe pushes the turnover cover to turn over towards the round hole of the first body, and when the turnover cover is turned over for 90 degrees, the turnover cover can be completely positioned inside the main through pipe and positioned at a horizontal position, so that an internal passage of the main through pipe can be sealed, the high-pressure airflow entering the main through pipe can only move upwards, and therefore the high-pressure airflow is prevented from damaging instruments connected below the main through pipe. After the cleaning work is finished, the turnover cover automatically returns to the second body of the main through pipe under the action of the torsion spring assembly and seals the second air outlet at one end of the back flushing pipe, and the effect of sealing the back flushing pipe is achieved. Therefore, the cleaning process of the air sampling pipeline is greatly simplified, instruments connected with the main through pipe can be effectively prevented from being damaged by cleaning air flow, and the air sampling pipeline cleaning device is simple in structure and high in practicability.

Drawings

FIG. 1: the utility model has the overall structure schematic diagram;

FIG. 2: the first explosion diagram of the utility model;

FIG. 3: the second explosion diagram of the utility model;

FIG. 4: the structure schematic diagram of the first body of the main through pipe is shown;

FIG. 5: the structure schematic diagram of the second body of the main through pipe is shown;

FIG. 6: the utility model discloses a structural schematic diagram of a torsion spring assembly;

FIG. 7: the structure of the turnover cover is schematic;

in the figure: 1. a blowback pipe; 101. an air inlet; 102. a sliding lock head; 2. a torsion spring assembly; 201. a torsion spring shaft; 202. a torsion spring; 3. turning over the cover; 4. a main through pipe; 41. a first body; 42. a second body; 401. a first air outlet; 402. the track is slidably locked.

Detailed Description

The following examples are given to further illustrate the present invention in detail, but are not intended to limit the present invention.

As shown in fig. 1-7, an automatic cleaning device for an air sampling pipeline comprises a main through pipe 4 composed of a first body 41 and a second body 42, wherein the main through pipe 4 is internally a cylindrical cavity with an inner diameter of 25mm, the upper end of the main through pipe 4 is a first air outlet 401, one side of the first body 41 is a plane and is provided with a circular hole;

two side edges of the plane side of the first body 41 are fixedly provided with sliding lock rails 402, and two side edges of the second body 42 are fixedly provided with sliding lock heads 102, so that the second body 42 is movably connected with the first body 41, and the disassembly and maintenance are convenient; the second body 42 has a circular arc cross section so that a cavity can be formed after the second body is connected with the first body 41;

second body 42 lateral wall trompil fixed mounting has the blowback pipe 1 of vertically with it, the blowback pipe 1 is close to the one end of first body 41 and is connected with circular shape upset lid 3 for the second gas outlet and through torsional spring subassembly 2, the other end of blowback pipe 1 is air inlet 101, the external diameter of upset lid 3 is the same with main siphunculus 4's internal diameter, the internal diameter of the round hole of seting up to first body 41 side is greater than the external diameter of upset lid 3, the high-pressure draught who gets into from blowback pipe 1 can promote upset lid 3, make it overturn 90 and pass through towards first body 41 the round hole gets into in main siphunculus 4 and the inside cavity passageway of shutoff main siphunculus 4, avoids the air current to get into main siphunculus 4 lower part and breaks the instrument of connecting at its lower extreme.

And an internal thread with the depth of 5mm for connecting the internal thread with the high-pressure air pipe joint is arranged at the air inlet 101 of the back flushing pipe 1.

The internal diameter of blowback pipe 1 is from air inlet 101 to second gas outlet grow gradually, and the internal diameter of second gas outlet is 25mm, and the internal diameter of air inlet 101 is 10mm, guarantees that high-speed air current can evenly act on flip-flop lid 3 when the blowback begins.

As shown in fig. 5-7, the torsion spring assembly 2 includes a torsion spring shaft 201 fixedly connected to the second body 42, and a torsion spring 202 sleeved on the torsion spring shaft 201; the bottom of the turning cover 3 is fixedly connected with a connecting block, the connecting block is provided with a hole matched with the torsion spring shaft 201, the torsion spring shaft 201 is rotatably connected in the hole, and two ends of the torsion spring 202 are respectively clamped on the second body 42 and the connecting block; so that the flip cover 3 can be flipped 90 ° toward the first body 41 of the main through pipe 4 under the action of the high-pressure air flow, whereas if there is no high-pressure air flow, it is flipped 90 ° toward the second body 42 under the action of the restoring force of the torsion spring 202 and blocks the blowback pipe 1.

Preferably, a sealing gasket is arranged on the turnover cover 3.

The working principle of the utility model is as follows:

the second body 42 is installed on the first body 41 through the slide lock track 402 and the slide lock head 101, then the lower end of the main through pipe 4 is connected with the analysis instrument, the upper end is connected with the air sampling pipe, and the air inlet 101 of the blowback pipe 1 is connected with the high-pressure air pump. When the air sampling smoke alarm system works normally, the turnover cover 3 keeps the initial position at the second air outlet of the blowback pipe 1 under the action of the torsion spring 202, and the effect of sealing the blowback pipe 1 is achieved; when the air sampling smoke alarm system needs to perform dust cleaning operation on the interior of an air sampling pipe and a sampling hole, high-pressure airflow generated by a high-pressure air pump enters from a blowback pipe 1 and contacts with an overturning cover 3, the overturning cover 3 is overturned by 90 degrees by the thrust generated by the airflow against the acting force of a torsion spring 202, the high-pressure airflow enters a main through pipe 4 from a circular hole formed in a first body 41 and closes a passage in the direction of the main through pipe 4, so that the high-pressure airflow enters the air sampling pipe from a first air outlet 401 above the main through pipe 4, the cleaning of the interior of the sampling pipe and the sampling hole is completed, and meanwhile, the high-pressure airflow is prevented from damaging an analysis instrument connected with the lower port of the main through pipe 4; after the ash removal operation is completed, the high-pressure air pump stops working, the external force of the airflow on the torsion spring 202 is removed, and the torsion spring 202 returns to the initial state from the torsion state to drive the turnover cover 3 to return to the air outlet of the back flushing pipe 1 and close the back flushing pipe 1. The automatic dust cleaning operation of the air sampling smoke alarm system is realized by repeating the steps.

Claims

1. The automatic cleaning device for the air sampling pipeline is characterized by comprising a main through pipe (4) composed of a first body (41) and a second body (42), wherein the upper end of the main through pipe (4) is provided with a first air outlet (401), one side of the first body (41) is a plane and is provided with a round hole, the second body (42) is detachably installed on one side of the plane of the first body (41), the cross section of the second body (42) is arc-shaped, so that a cavity can be formed after the second body is connected with the first body (41), a back flushing pipe (1) perpendicular to the second body (42) is fixedly installed on the hole in the side wall of the second body (42), one end, close to the first body (41), of the back flushing pipe (1) is provided with a second air outlet and is connected with a round turning cover (3) through a torsion spring assembly (2), and the other end of the back flushing pipe (1) is provided with an air inlet (101);

the outer diameter of the turnover cover (3) is the same as the inner diameter of the main through pipe (4), the inner diameter of a round hole formed in the side surface of the first body (41) is larger than the outer diameter of the turnover cover (3), so that the turnover cover (3) can turn over for 90 degrees towards the first body (41) under the action of high-pressure airflow flowing in from the air inlet (101) and turn over into the main through pipe (4) through the round hole and block the main through pipe (4) to prevent the airflow from entering the lower part of the main through pipe (4).

2. The automatic cleaning device for the air sampling pipeline as claimed in claim 1, wherein the torsion spring assembly (2) comprises a torsion spring shaft (201) fixedly connected with the second body (42) and a torsion spring (202) sleeved on the torsion spring shaft (201);

the bottom of the turnover cover (3) is fixedly connected with a connecting block, a hole matched with the torsion spring shaft (201) is formed in the connecting block, so that the connecting block is rotatably connected with the torsion spring shaft (201), and two ends of the torsion spring (202) are respectively clamped on the second body (42) and the connecting block.

3. The automatic cleaning device for the air sampling pipeline according to claim 1, wherein a slide lock rail (402) is fixedly mounted on both lateral edges of the first body (41);

sliding lock heads (102) are fixedly arranged on two side edges of the second body (42) so that the second body (42) is in sliding connection with the first body (41).

4. The automatic cleaning device for the air sampling pipeline according to any one of claims 1 to 3, characterized in that an internal thread for connecting with a high-pressure air pipe joint is arranged at the air inlet (101) of the blowback pipe (1).

5. The automatic cleaning device for the air sampling pipeline according to any one of claims 1 to 3, wherein the inner diameter of the blowback pipe (1) is gradually increased from the air inlet (101) to the second air outlet, the inner diameter of the second air outlet is 25mm, and the inner diameter of the air inlet (101) is 10 mm.

6. An automatic cleaning device for an air sampling pipe according to any one of claims 1 to 3, wherein the inner diameter of the main through pipe (4) is 25 mm.

7. An automatic cleaning device for air sampling pipes according to any of claims 1 to 3, characterized in that the flip cover (3) is provided with a sealing gasket.