CN209977127U - Labyrinth impact type gas buffer - Google Patents

Abstract

The utility model provides a maze striking gas buffer, which comprises an outer shell, be connected with suction nozzle and play gas nozzle on the shell, the shell inner space is separated for 2-4 cushion chambers through the inner wall, through setting up the aperture intercommunication on the inner wall between the cushion chamber, and gas is discharged through going out the gas nozzle after each cushion chamber flows through the suction nozzle. The utility model discloses this labyrinth cushion chamber is flowed through to the air current, and through multiple lateral wall striking, space buffering and aperture current limiting effect, the volatility of import department's air current has been eliminated by a wide margin, the accurate control of the measurement accuracy of guarantee drill way flowmeter and gas circuit air flow.

Description

Labyrinth impact type gas buffer

Technical Field

The utility model belongs to ambient atmosphere and fixed pollution sources detection area especially relates to a labyrinth striking gas buffer.

Background

At present, an orifice flowmeter is commonly used in the fields of environmental monitoring and the like to measure gas flow, and the measurement principle of the orifice flowmeter is to measure flow according to the pressure difference of the front side and the rear side of an orifice. And then if the air pump is directly connected, the air flow at the interface of the air pump has strong fluctuation, so that the measurement of the orifice flowmeter is inaccurate. The utility model discloses an application number is 201820068398.6 utility model provides a particulate matter monitor gas circuit flow control system, include with the orifice flowmeter of particulate matter sensor gas outlet intercommunication in the particulate matter monitor, with the cushion flask and the scraper pump that the orifice flowmeter communicates in proper order, it is stable to make the air current in the gas circuit through the cushion flask, nevertheless because it only leans on the poor formation pressure differential of bore of air inlet and gas outlet to cushion, only buffering effect is limited, can't eliminate the air current fluctuation of orifice flowmeter department completely.

SUMMERY OF THE UTILITY MODEL

The utility model discloses buffer effect to current cushion flask is limited, can't avoid the technical problem of orifice flowmeter department gas fluctuation, provides a small and exquisite light maze striking gas buffer for the air current of orifice flowmeter department is stable.

In order to achieve the above object, the utility model discloses a technical scheme be:

a labyrinth impact type gas buffer comprises a shell, wherein a gas inlet nozzle and a gas outlet nozzle are connected to the shell, the space in the shell is divided into 2-4 buffer cavities through an inner wall, the buffer cavities are communicated through small holes formed in the inner wall, and gas flows through the buffer cavities through the gas inlet nozzle and then is discharged through the gas outlet nozzle.

Preferably, the housing includes a housing main body and a sealing cover.

Preferably, the sealing cover is a soft film.

Preferably, the air inlet nozzle and the air outlet nozzle extend into the buffer cavity.

Preferably, the number of the buffer cavities is three, the buffer cavities are respectively a first buffer cavity, a second buffer cavity and a third buffer cavity, the air inlet nozzle is inserted into the first buffer cavity, and the air outlet nozzle is inserted into the third buffer cavity.

Preferably, the air inlet nozzle and the air outlet nozzle are provided with annular bulges.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

the air flow flows through the labyrinth buffer cavity, and the fluctuation of the air flow at the inlet is greatly eliminated through multiple side wall impact, space buffer and small hole flow limiting effects, so that the metering accuracy of the orifice flowmeter and the accurate control of the air flow of the air path are ensured.

Drawings

FIG. 1 is a schematic view of an external structure of a buffer according to the present invention;

FIG. 2 is a schematic view of the internal structure of the buffer according to the present invention;

in the above figures: 1. a housing; 11. a housing main body; 12. a sealing cover; 13. an inner wall; 14. a small hole; 2. an air inlet nozzle; 3. an air outlet nozzle; 4. a first buffer chamber; 5. a second buffer chamber; 6. and a third buffer chamber.

Detailed Description

For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings and examples.

In the description of the present invention, it is noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the words upper and lower indicating orientation are based only on the orientation shown in the drawings and are not intended as limitations on the mounting position.

Example (b): as shown in fig. 1 and 2, a labyrinth impact type gas buffer comprises a shell 1, wherein a buffer cavity is formed in a space surrounded by the shell 1, the shell 1 is connected with an air inlet nozzle 2 and an air outlet nozzle 3, the air inlet nozzle 2 is connected with a pore plate flowmeter through a pipeline, the air outlet nozzle 3 is connected with an air pump through a pipeline, gas enters the buffer cavity through the air inlet nozzle 2, and is discharged through the air outlet nozzle 3 after collision buffering.

The space in the shell 1 is divided into 3 buffer cavities by an inner wall 13, namely a first buffer cavity 4, a second buffer cavity 5 and a third buffer cavity 6. In the embodiment, the first buffer cavity 4 and the second buffer cavity 5 are positioned in one row, the second buffer cavity 5 is positioned in the second row, and a small hole 14 is formed in an inner wall 13 between the first buffer cavity 4 and the second buffer cavity 5 and is communicated with the first buffer cavity 5 and the second buffer cavity 5; a small hole 14 is arranged on the inner wall 13 between the second buffer cavity 5 and the third buffer cavity 6 and is communicated with the second buffer cavity 6 and the third buffer cavity 6. The air inlet nozzle 2 is inserted into the first buffer cavity 4, and the air outlet nozzle 3 is inserted into the second buffer cavity 5. The three buffer cavities are arranged according to the above, so that the processing is convenient. The gas flow path is shown by a dotted line in fig. 2, after the gas flowing through the orifice plate flowmeter enters the first buffer chamber 4 from the gas inlet nozzle 22, the gas impacts the side wall of the first buffer chamber 4 due to the inertia effect of the gas flow, and the buffer is quickly released in the space; then enters the second buffer cavity 5 through a small hole 14 on an inner wall 13 between the first buffer cavity 4 and the second buffer cavity 5, the small hole 14 further reduces fluctuation of air flow and makes secondary impact with the side wall of the second buffer cavity 5 to buffer fluctuation; then enters the third buffer cavity 6 through a small hole 14 on the inner wall 13 between the second buffer cavity 5 and the third buffer cavity 6, and finally is discharged through an air outlet to enter the air pump. The airflow flows through the labyrinth buffer cavity, and the fluctuation of the airflow at the inlet is greatly eliminated through multiple side wall impact, space buffer and small hole 14 flow limiting effects, so that the metering accuracy of the orifice flowmeter and the accurate control of the airflow flow of the air circuit are ensured.

The air inlet nozzle 2 and the air outlet nozzle 3 are provided with annular bulges which can be firmly inserted into pipelines.

In order to facilitate the machining of the inner wall and the small hole 14 in the inner wall 13, the housing 1 is divided into two parts, a housing body 11 and a sealing cover 12. The sealing cover 12 may be made of a hard material the same as that of the housing 1, or may be a soft film (such as PVC, rubber, etc.), and a buffering effect may be further increased when the soft film is sampled.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (6)

1. A kind of maze of impact type gas buffer, characterized by: the air conditioner comprises a shell, wherein an air inlet nozzle and an air outlet nozzle are connected to the shell, the space in the shell is divided into 2-4 buffer cavities through an inner wall, the buffer cavities are communicated through small holes formed in the inner wall, and air flows through the buffer cavities through the air inlet nozzle and then is discharged through the air outlet nozzle.

2. The labyrinth impingement gas damper as recited in claim 1, wherein: the housing includes a housing body and a sealing cover.

3. The labyrinth impingement gas damper as recited in claim 2, wherein: the sealing cover is a soft film.

4. The labyrinth impingement gas damper as recited in claim 1, wherein: the air inlet nozzle and the air outlet nozzle extend into the buffer cavity.

5. The labyrinth impingement gas damper as recited in claim 1, wherein: the buffer chamber is three, is first buffer chamber, second buffer chamber and third buffer chamber respectively, and the suction nozzle inserts in first buffer chamber, goes out the mouth and inserts in the third buffer chamber.

6. The labyrinth impingement gas damper as recited in claim 1, wherein: and the air inlet nozzle and the air outlet nozzle are provided with annular bulges.

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