Sampling device for gas analyzer

Abstract

The utility model discloses a sampling device for a gas analyzer, and belongs to the technical field of sampling of gas analyzers. The sampling tube is provided with an air valve, one end of the air valve is provided with a sealing assembly, the sealing assembly comprises a first threaded ring, a threaded cylinder and a threaded sleeve, the first threaded ring is in threaded fit with an air inlet of the air valve, the first threaded ring is in threaded fit with the air valve, and the threaded sleeve is in threaded fit with the threaded cylinder. The sampling pipe is arranged on the gas analyzer, the gas valve is installed on the sampling pipe, one end of the gas valve is in threaded fit with the sealing assembly, external gas is sampled and collected through the gas valve, the filter screen filters air entering the gas valve, and dust and winged insects are prevented from entering the gas valve; a brush can clean the filter screen, so that the filter screen is prevented from being blocked by dust after being used for a long time, and the use of the filter screen is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas analyzer sampling technical field, concretely is a kind of sampling device for gas analyzer. BACKGROUND

[0002] Sampling device is a kind of equipment or tool for obtaining representative sample from certain process, system or environment, and the main function of sampling device is to take a certain amount of sample from the object to be monitored or analyzed for subsequent analysis, testing or research use, and these samples should be representative and can truly reflect the characteristics of the object to be monitored or analyzed, gas analyzer is the flow analyzer of measuring gas composition, commonly used there are thermal conductivity gas analyzer, electrochemical gas analyzer and infrared absorption analyzer etc., mainly utilize gas sensor to detect the gas type existing in environment, gas sensor is the sensor for detecting the composition and content of gas, when gas analyzer analyzes external air environment, personnel needs to sample external air, so as to analyze well.

[0003] The existing sampling device cannot effectively filter external gas when collecting external gas for a long time, and the air inlet of the sampling device is prone to adhere dust and small insects during collection, which is not conducive to gas sampling. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of sampling device for gas analyzer, gas valve is sampled to collect external gas, air entering gas valve is filtered by filter screen, avoid dust and fly into the inside of gas valve.

[0005] The utility model is implemented by the following technical solutions:

[0006] The utility model discloses a kind of sampling device for gas analyzer, including sampling pipe, gas valve is set on sampling pipe, gas valve one end is set to seal component, and seal component includes first screw ring, threaded cylinder and threaded sleeve, first screw ring is screwed on the air inlet of gas valve, first screw ring is screwed on gas valve, threaded sleeve is screwed on threaded cylinder, two limit rings are installed on the opposite side wall of threaded cylinder and threaded sleeve, bearing is installed in the inside of two limit rings, connecting ring is installed in the inner ring of bearing, spring is set on connecting ring, filter screen is installed in the inside of first screw ring, circular plate is set in the inside of threaded sleeve, brush is installed on the side wall of circular plate, and brush acts on filter screen.

[0007] Further, it further includes gas analyzer, and sampling pipe is set on gas analyzer.

[0008] Further, second screw ring is installed in the inside of first screw ring, second screw ring is attached on filter screen, and the inner wall of one end of second screw ring is inclined.

[0009] Further, the connecting ring is arranged on the circular plate in an L shape.

[0010] Further, the circular plate is a T-shaped plate.

[0011] The utility model has the following beneficial effects:

[0012] The utility model discloses a sampling pipe is provided on the gas analyzer, installs the gas valve on the sampling pipe, and the one end of gas valve is screwed with the sealing assembly, and the external gas is collected through the gas valve, and the air of gas valve is filtered through the filter screen, avoids the dust and the flying insect to enter to the inside of gas valve, and the brush is arranged on the threaded sleeve of the sealing assembly of one end of gas valve, and the brush can clean the filter screen, avoids the dust blockage of filter screen after long -time use, guarantees the use of filter screen.

[0013] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of gas analyzer;

[0015] Figure 2 It is a structural schematic diagram of gas valve and sealing assembly;

[0016] Figure 3 It is a structural schematic diagram of gas valve and sealing assembly;

[0017] Figure 4 It is a structural schematic diagram of first threaded ring, threaded cylinder and threaded sleeve;

[0018] Figure 5 It is a structural schematic diagram of first threaded ring, threaded cylinder and threaded sleeve.

[0019] In the drawing: 1, gas analyzer;2, sampling pipe;3, gas valve;4, sealing assembly;5, first threaded ring;501, filter screen;502, second threaded ring;6, threaded cylinder;7, threaded sleeve;701, circular plate;702, brush;8, limiting ring;9, bearing;10, connecting ring;11, spring. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figures 1-5The utility model provides a technical scheme: a sampling device for gas analyzer, including sampling pipe 2, still include gas analyzer 1, sampling pipe 2 sets up on gas analyzer 1, is provided with gas valve 3 on sampling pipe 2, is used for gas to enter the inside of gas analyzer 1 through gas valve 3, makes gas analyzer 1 carry out analysis operation to gas.

[0022] Gas valve 3 one end sets up sealing assembly 4, the installation of sealing assembly 4 can block the air inlet of gas valve 3 and protect, sealing assembly 4 includes first threaded ring 5, threaded cylinder 6 and threaded sleeve 7, second threaded ring 502 is installed in first threaded ring 5, second threaded ring 502 is attached on filter screen 501, the inner wall of one end of second threaded ring 502 is inclined, first threaded ring 5 is screwed on the air inlet of gas valve 3, first threaded ring 5 is screwed on gas valve 3, filter screen 501 is used to filter the air entering gas valve 3, to avoid dust and flying insects entering the inside of gas valve 3.

[0023] Threaded sleeve 7 is screwed on threaded cylinder 6, two limit rings 8 are installed on the opposite side walls of threaded cylinder 6 and threaded sleeve 7, bearings 9 are installed in the two limit rings 8, connecting ring 10 is installed in the inner ring of bearing 9, spring 11 is arranged on connecting ring 10, filter screen 501 is installed in first threaded ring 5, circular plate 701 is arranged in threaded sleeve 7, circular plate 701 is T-shaped plate, connecting ring 10 is L-shaped and arranged on circular plate 701, brush 702 is installed on the side wall of circular plate 701, brush 702 acts on filter screen 501, rotating threaded sleeve 7 makes threaded cylinder 6 and threaded sleeve 7 separate, to ensure that gas valve 3 can sample and collect external gas through first threaded ring 5, when rotating threaded sleeve 7, brush 702 can clean filter screen 501, to avoid filter screen 501 being blocked by dust after long time use, to ensure the use of filter screen 501.

[0024] When the sampling device is used to collect the gas of gas analyzer, rotate threaded sleeve 7, spring 11 between threaded sleeve 7 and threaded cylinder 6 rotates through the bearings 9 in the limit rings 8 and the connecting ring 10, so that threaded sleeve 7 and threaded cylinder 6 are separated, so that the external gas can enter the inside of gas valve 3 through first threaded ring 5, to ensure the collection of gas in the inside of gas valve 3, and the gas in the inside of gas valve 3 is analyzed by gas analyzer 1.

[0025] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A sampling device for a gas analyzer, comprising a sampling tube (2), characterized in that: A gas valve (3) is provided on the sampling tube (2). A sealing assembly (4) is provided at one end of the gas valve (3). The sealing assembly (4) includes a first threaded ring (5), a threaded cylinder (6), and a threaded sleeve (7). The first threaded ring (5) is threadedly fitted at the air inlet of the gas valve (3). The threaded sleeve (7) is threadedly fitted on the threaded cylinder (6). The threaded cylinder (6) and the threaded sleeve (7) are opposite to each other. Two limiting rings (8) are installed on the side wall. Bearings (9) are installed inside the two limiting rings (8). A connecting ring (10) is installed on the inner ring of the bearing (9). A spring (11) is provided on the connecting ring (10). A filter screen (501) is installed inside the first threaded ring (5). A circular plate (701) is provided inside the threaded sleeve (7). A brush (702) is installed on the side wall of the circular plate (701). The brush (702) acts on the filter screen (501).

2. The sampling device for a gas analyzer according to claim 1, characterized in that, It also includes a gas analyzer (1), and the sampling tube (2) is mounted on the gas analyzer (1).

3. A sampling device for a gas analyzer according to claim 1, characterized in that, A second threaded ring (502) is installed inside the first threaded ring (5). The second threaded ring (502) is attached to the filter screen (501). The inner wall of one end of the second threaded ring (502) is inclined.

4. A sampling device for a gas analyzer according to claim 1, characterized in that, The connecting ring (10) is L-shaped and mounted on the circular plate (701).

5. A sampling device for a gas analyzer according to claim 1, characterized in that, The circular plate (701) is a T-shaped plate.

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