Gas sampler

Abstract

The utility model provides a gas sampler which comprises a shell, and a circuit board, a gas collection unit and a power supply are arranged in the shell; a control unit, a prompt unit, a debugging unit and a slide switch are arranged on the circuit board; the gas collection unit comprises a gas pump, a gas collection silica gel hose and a colorimetric bottle; a groove is formed in the right side of the top of the shell, the colorimetric bottle is installed in the groove, and a hollow spiral connector is arranged above the groove. The colorimetric bottle comprises a bottle body and a bottle cap, two air holes protruding upwards are formed in the bottle cap and comprise the first air hole and the second air hole, and a plastic pipe is connected into the first air hole and located in the bottle body; the end, located on the inner side of the shell, of the spiral connector is connected with the air pump through a hose. The end, located on the outer side of the shell, of the spiral connector is connected with the upper end of the second air hole through an air collection silica gel hose. The utility model relates to the field of formaldehyde detection, in particular to a gas sampler which is convenient to carry and can be used for collecting gas in a vehicle or in a scene without a power supply.

Description

Technical Field

[0001] The utility model relates to the field of formaldehyde detection, in particular to a gas sampler. Background Art

[0002] There are many devices for gas sampling in the existing market. Most of them need to be connected to a plug-in power supply during detection, and most of them are large in size. During detection, they also need to be connected to a flow meter to calibrate the gas flow. After adding reagents, they must be compared with the color standard by the naked eye. They are easily affected by the external environment, have large errors, are cumbersome to operate, and have limited application scenarios. Utility Model Content

[0003] In view of this, the utility model aims to propose a gas sampler to solve the problems that the gas sampler is large in size and needs to be connected to a plug power supply, is inconvenient to carry, and has limited operating scenarios.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A gas sampler comprises a shell, wherein a circuit board, a gas collecting unit and a power supply are arranged inside the shell;

[0006] The circuit board is provided with a control unit, a prompt unit, a debugging unit and a sliding switch;

[0007] The circuit board is connected to the power supply, and the gas collecting unit, the prompting unit, the adjusting unit, the sliding switch and the power supply are all connected to the control unit;

[0008] The gas collection unit comprises an air pump, a gas collection silicone hose and a colorimetric bottle;

[0009] A groove is provided on the right side of the top of the shell, the colorimetric bottle is installed in the groove, and a hollow spiral joint is provided above the groove;

[0010] The colorimetric bottle comprises a bottle body and a bottle cap, the bottle cap is provided with two upwardly protruding air holes, the air holes comprise a first air hole and a second air hole, a plastic tube is connected to the first air hole, and the plastic tube is located in the bottle body;

[0011] One end of the spiral joint located on the inner side of the shell is connected to the air pump through a hose, and one end of the spiral joint located on the outer side of the shell is connected to the upper end of the second air hole through the gas collecting silicone hose.

[0012] Further, the adjustment unit includes an adjustable potentiometer, and the adjustable potentiometer is mounted on the circuit board;

[0013] The prompt unit includes a buzzer and an LED light, wherein the buzzer is mounted on the circuit board, and the LED light is connected to the circuit board;

[0014] The shell is provided with a circular hole, and the LED lamp extends out of the circular hole.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The utility model is a gas sampler. The gas collection unit cooperates with the control unit to make the sampler easy and convenient to operate. The adjustable potentiometer in the adjustment unit greatly improves the sampling flow consistency of the sampler. The prompt unit is composed of a buzzer and an LED light. After the collection is completed, the buzzer sounds and the LED light flashes to prompt the end of sampling. Three No. 5 batteries are used as power sources, which is convenient to carry. Different from the gas samplers on the market, the gas sampler described in the utility model can be read with a matching portable water quality analyzer without the need for colorimetry with the naked eye. The utility model solves the technical problems that the gas sampler is large in size and needs to be connected to a plug-in power supply, which is inconvenient to carry, the operation scene is limited, and gas cannot be collected in a car or in a scene without power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0018] Figure 1 It is an overall schematic diagram of the gas sampler described in the embodiment of the utility model;

[0019] Figure 2 This is an internal schematic diagram of a gas sampler according to an embodiment of the utility model;

[0020] Figure 3 A schematic diagram of a colorimetric bottle of a gas sampler according to an embodiment of the utility model;

[0021] Description of reference numerals:

[0022] 1. Shell; 2. Circuit board; 3. Switch; 4. Air pump; 5. Threaded joint; 6. Colorimetric bottle; 7. Bottle cap; 8. First air hole; 9. Second air hole; 10. Power supply; 11. LED light. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0026] This embodiment relates to a gas sampler, such as Figure 1-3 As shown. It includes a housing 1, a circuit board 2, a gas collection unit and a power supply 10 are arranged inside the housing 1; a control unit, a prompt unit, a debugging unit and a sliding switch 3 are arranged on the circuit board 2; the circuit board 2 is connected to the power supply 10, and the gas collection unit, the prompt unit, the adjustment unit, the sliding switch 3 and the power supply 10 are all connected to the control unit; the gas collection unit includes an air pump 4, a gas collection silicone hose and a colorimetric bottle 6; a groove is arranged on the right side of the top of the housing 1, and the colorimetric bottle 6 is installed in the groove to prevent the colorimetric bottle 6 from tipping over and sucking back the absorption liquid.

[0027] A hollow spiral joint is provided above the groove; the colorimetric bottle 6 includes a bottle body and a bottle cap 7, the bottle cap 7 is provided with two upwardly protruding air holes, the air holes include a first air hole 8 and a second air hole 9, a plastic tube is connected to the first air hole 8, and the plastic tube is located in the bottle body; one end of the spiral joint located on the inner side of the shell 1 is connected to the air pump 4 through a hose, and the end of the spiral joint located on the outer side of the shell 1 is connected to the upper end of the second air hole 9 through a gas collecting silicone hose.

[0028] It can be understood that the control unit can be a single chip microcomputer or other devices that can achieve the same purpose.

[0029] Specifically, the power source 10 in this embodiment uses three No. 5 batteries, which makes the device more flexible and convenient. Users can easily replace batteries without worrying about the problem of insufficient power. In addition, the use of No. 5 batteries also reduces the burden on the environment.

[0030] The adjustment unit includes an adjustable potentiometer, which is installed on the circuit board 2. The adjustable potentiometer is provided to greatly improve the sampling flow consistency of the sampler; the prompt unit includes a buzzer and an LED light 11, the buzzer is installed on the circuit board 2, and the LED light 11 is connected to the circuit board 2; a round hole is provided on the shell 1, and the LED light 11 extends from the round hole. After the collection is completed, the buzzer sounds and the LED light 11 flashes to indicate the end of sampling.

[0031] The gas sampler described in the utility model can be used with a matching portable water quality analyzer to read the data without the need for naked eye color comparison. The utility model solves the technical problems that the gas sampler is large in size and needs to be connected to a plug-in power supply 10. It is inconvenient to carry, has limited operating scenarios, and cannot collect gas in a car or in a scenario without power 10.

[0032] When the gas sampler described in this embodiment is in use, the absorption liquid is sucked by a syringe and injected into the measuring bottle. The control unit controls the gas collection unit to collect gas. The formaldehyde in the collected gas will be absorbed by the absorption liquid. When the reagent is dropped into the water, the formaldehyde will react with the reagent, so that the water sample will show different colors. The result can be detected using a matching portable water quality analyzer. This judgment method is more accurate and objective than the naked eye, can effectively reduce human errors, has high accuracy, and is simpler and more convenient.

[0033] The gas sampler using the above implementation scheme solves the problems in the prior art that it is large in size, needs to be connected to a flow meter to calibrate the collected flow rate during detection, needs to be compared with a color standard by the naked eye after adding reagents, is easily affected by the external environment, has large errors, is cumbersome to operate, and has limited application scenarios. The above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A gas sampler, comprising a housing (1), characterized in that: A circuit board (2), a gas collecting unit and a power source (10) are provided inside the housing (1); The circuit board (2) is provided with a control unit, a prompting unit, an adjustment unit and a sliding switch (3); The circuit board (2) is connected to the power supply (10), and the gas collection unit, the prompt unit, the adjustment unit, the slide switch (3) and the power supply (10) are all connected to the control unit; The gas collection unit comprises an air pump (4), a gas collection silicone hose and a colorimetric bottle (6); The housing (1) is provided with a groove on the right side of the top, the colorimetric bottle (6) is installed in the groove, and a hollow spiral joint is provided above the groove; The colorimetric bottle (6) comprises a bottle body and a bottle cap (7), the bottle cap (7) is provided with two upwardly protruding air holes, the air holes comprising a first air hole (8) and a second air hole (9), the first air hole (8) is connected to a plastic tube, and the plastic tube is located in the bottle body; One end of the spiral joint located on the inner side of the shell (1) is connected to the air pump (4) via a hose, and one end of the spiral joint located on the outer side of the shell (1) is connected to the upper end of the second air hole (9) via the air collecting silicone hose.

2. The gas sampler according to claim 1, characterized in that: The adjustment unit comprises an adjustable potentiometer, and the adjustable potentiometer is mounted on the circuit board (2); The prompt unit comprises a buzzer and an LED light (11), wherein the buzzer is mounted on the circuit board (2), and the LED light (11) is connected to the circuit board (2); The housing (1) is provided with a circular hole, and the LED lamp (11) protrudes from the circular hole.

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