CN219495837U - Sampling and preserving device for gas detection - Google Patents

Abstract

The utility model relates to the field of gas detection equipment, and particularly discloses a sampling and storing device for gas detection, which comprises a sampling box and a sampling bag arranged in the sampling box, wherein the sealable sampling box comprises a box body and a box cover, a sealing ring is arranged at the position of the box cover, which is tightly pressed by the box body, an air hole is formed in the box cover, and an air valve is arranged at the air hole; an air inlet pipe connected with a sampling bag is arranged on the left side surface of the box body in a penetrating manner, an exhaust pipe is arranged on the right side surface of the sampling box in a penetrating manner, one end of the exhaust pipe is communicated with the box body, and the other end of the exhaust pipe is connected with an air suction cylinder; the box is provided with a pressure gauge, the outer surface of the box is detachably connected with an air cylinder clamp, an air suction clamp is tightly clamped on the air cylinder clamp, the air cylinder clamp is a C-shaped elastic clamp, the back surface of the elastic clamp is provided with a sucking disc, and the sucking disc is adsorbed on the surface of the box. Only 6 parts are needed, the needed parts are few, the structure is simple, the whole portable device is portable, the manufacturing cost is low, electricity is not needed, and the device is convenient to store.

Description

Sampling and preserving device for gas detection

Technical Field

The utility model relates to the field of gas detection equipment, in particular to a sampling and storing device for gas detection.

Background

A process of collecting a sample of atmospheric contaminants or a sample of contaminated air. The acquisition method is divided into two types: one is to make a large amount of air pass through a liquid absorbent or a solid absorbent to enrich contaminants with low concentration in the atmosphere, such as an air extraction method and a filter membrane method. The other is to collect the air containing the contaminants with a container (glass bottle, plastic bag, etc.). The former measures the average concentration of contaminants in the atmosphere over the sampling time; the latter is measured as the instantaneous concentration or as the average concentration over a short period of time. The manner of sampling will depend on the purpose of the sampling and the situation in which it is in the field. The sample should be representative. The sampling efficiency is high, the operation is simple and convenient, and the subsequent analysis and determination are convenient, so that reliable basic data of gas pollution can be obtained.

The current market gas sampling equipment, such as a JCH-2400 intelligent 24-hour constant temperature constant current automatic continuous sampler and a JH-2400 (3) intelligent four-way constant current atmospheric sampler, is characterized in that a sampling pump is used for pumping a sample, gas flows through an electronic flowmeter, flow signals are sent to a microprocessor for processing, instantaneous flow is obtained, the sampling volume is accumulated, and meanwhile, the sampling volume is converted into a standard sampling volume according to the acquired temperature and pressure before metering. And in the later stage, the concentration of the harmful gas can be calculated according to the collected content of the harmful gas and the standard condition volume. However, in the use process, the equipment is too large and heavy, the equipment is inconvenient to carry when going out, the parts are too many and complex, the manufacturing cost is very high, the equipment is inconvenient to simply sample in the field, electricity is needed, and the equipment is particularly inconvenient to use in the field and has high use cost.

The sampling and preserving device for gas detection, which is suitable for field sampling, has the advantages of simple structure, portability, low manufacturing cost, no need of electricity and convenient preservation.

Disclosure of Invention

In order to solve the problems, the utility model provides a sampling and preserving device for gas detection, which has the advantages of simple structure, portability, low manufacturing cost, no need of electricity and convenient preservation.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the sampling and preserving device for gas detection comprises a sampling box and a sampling bag arranged in the sampling box, wherein the sealable sampling box comprises a box body and a box cover, a sealing ring is arranged at the position of the box cover, which is tightly pressed by the box body, an air hole is formed in the box cover, and an air valve is arranged at the air hole;

an air inlet pipe connected with a sampling bag is arranged on the left side surface of the box body in a penetrating manner, an exhaust pipe is arranged on the right side surface of the sampling box in a penetrating manner, one end of the exhaust pipe is communicated with the box body, and the other end of the exhaust pipe is connected with an air exhaust cylinder;

the box is provided with a pressure gauge, the outer surface of the box is detachably connected with an air cylinder clamp, the air suction clamp is tightly clamped on the air cylinder clamp, the air cylinder clamp is a C-shaped elastic clamp, the back surface of the elastic clamp is provided with a sucking disc, and the sucking disc is adsorbed on the surface of the box.

When the sampling device is used, the air inlet pipe is placed into sampling gas, the air suction pipe is pulled, negative pressure is generated in the sampling box, the pressure gauge senses pressure change and displays the pressure change, the use safety is ensured, and the sampling gas is pumped into the sampling bag under the action of the negative pressure for collection; so as to quickly acquire whether the gas is extracted;

firstly, an air suction cylinder is adopted, so that electricity is not required; the whole only needs one sampling box, an air suction cylinder, an air inlet pipe, a pressure gauge, a sampling bag and an air suction pipe, and has 6 total parts, less required parts, simple structure, low manufacturing cost, light weight and portability; the gas sampling device is particularly suitable for simple gas sampling. The air suction cylinder can be clamped on the air cylinder clamp and then fixed on the sampling box, so that the arrangement and collection are more convenient; and the sampling bag after sampling is positioned in the sampling box, so that the storage is convenient.

Further, the utility model also comprises a brace, and two ends of the brace are detachably arranged on the box body. When the portable belt is carried, the suspenders only need to be obliquely spanned on the body, so that the portable belt is more convenient to carry.

In summary, the utility model has the following beneficial effects: only 6 parts are needed, the needed parts are few, the structure is simple, the whole portable device is portable, the manufacturing cost is low, electricity is not needed, and the device is convenient to store.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

the sampling box 1, the box body 11 and the box cover 12; a sampling bag 2; a pneumatic chuck 3, an elastic clamp 31 and a sucker 32; an intake pipe 4; an exhaust pipe 5; a suction cylinder 6; a harness 7; a pressure gauge 8.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, a sampling and preserving device for gas detection comprises a sampling box 1 and a sampling bag 2, wherein the sampling box 1 is of a sealable structure, the sampling box 1 comprises a box body 11 and a box cover 12, the opening of the box body 11 faces upwards, the rear side of the box cover 12 is hinged with the rear side of the opening of the box body 11, and the front side of the box cover 12 is clamped with the front side of the opening of the box body 11. The sealing ring is arranged at the position where the box cover 12 is tightly pressed on the box body 11, so that the sealing effect during closing is ensured.

The sampling bag 2 is arranged in the sampling box 1, the air inlet pipe 4 is arranged on the left end side face of the box body 11 in a penetrating mode, one end of the air inlet pipe 4 is connected with the sampling bag 2, and the other end of the air inlet pipe 4 can be placed in sampling gas to extract gas. The sampling bag 2 is a plastic bag with a sealable opening, and the sampling bag can be made of the existing product, for example, a connector is arranged on the box body 2, and the connector can be connected with the air inlet pipe 4. The case cover 12 is provided with an air hole, and an air valve 13 is arranged at the air hole.

The right-hand member side of sampling box 1 wears to be equipped with exhaust tube 5, and exhaust tube 5 one end intercommunication box 11, the exhaust tube 5 other end is connected to the gas pump 6, and then the accessible gas pump 6 is taken out the air in the box 11, makes in the box 11 be in the negative pressure state. The box 11 is provided with a pressure gauge 8, so that the negative pressure state in the box can be monitored.

For convenient carrying, the outer surface of the box 11 is detachably connected with an inflator clamp 3, and the air suction tube 6 is clamped on the inflator clamp 3. Specifically, the inflator clip 3 is a C-shaped elastic clip 31, and a suction cup 32 is disposed on the back surface of the elastic clip 31, and the suction cup 32 is adsorbed on the surface of the case 11, so that the air suction tube 6 can be fixed on the case 11.

The utility model also comprises a brace 7, the two ends of the brace 7 are detachably arranged on the box 7, and the detachable connection mode can be in snap connection, plug connection and the like. Valves are preferably arranged on both the air inlet pipe and the air outlet pipe.

When the sampling device is used, the box cover 12 is opened, the sampling bag 2 is placed in the box body 11, then one end of the air inlet pipe 4 is connected with the sampling bag 2, the box cover 12 is closed, the other end of the air inlet pipe 4 is placed in gas to be sampled, the air in the box body 11 is pulled out by the air suction pipe 6, the negative pressure value in the box body 11 is displayed in real time by the pressure gauge 8, under the action of the negative pressure, the sampling bag 2 pumps the sampling gas into the sampling bag 2 from the air inlet pipe 4, gas sampling is achieved, then the air valve 13 is opened, the pressure intensity inside and outside the box body is balanced, then the box cover 12 is opened, the opening of the sampling bag 2 is sealed, and the sampling operation is completed. The sampled gas can be detected by other detection equipment, and the other detection equipment is no longer within the protection scope of the application.

The air suction tube 6 can be clamped on the air cylinder clamp 3, and the whole device can be carried by carrying the back strap 7, so that the device is convenient to carry. The sampling gas can be collected by a plurality of sampling bags, and then the sampling bags for collecting the sampling gas are uniformly stored in the sampling box 1, so that the portable sampling box is convenient to carry.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (2)

1. A sample save set that gaseous detection used, its characterized in that:

the sampling box comprises a sealable sampling box (1) and a sampling bag (2) arranged in the sampling box (1), wherein the sampling box (1) comprises a box body (11) and a box cover (12), a sealing ring is arranged at the position, pressed by the box cover (12), of the box body (11), an air hole is formed in the box cover (12), and an air valve (13) is arranged at the air hole;

an air inlet pipe (4) connected with the sampling bag (2) is arranged on the left side surface of the box body (11) in a penetrating manner, an air exhaust pipe (5) is arranged on the right side surface of the sampling box (1) in a penetrating manner, one end of the air exhaust pipe (5) is communicated with the box body (11), and the other end of the air exhaust pipe (5) is connected with an air exhaust cylinder (6);

be equipped with manometer (8) on box (11), box (11) surface detachable connection inflator clip (3), pump down an section of thick bamboo (6) clamp on inflator clip (3), inflator clip (3) are elastic clip (31) of C shape, and the back of elastic clip (31) is equipped with sucking disc (32), and this sucking disc (32) adsorb in the surface of box (11).

2. The sampling and storing device for gas detection according to claim 1, wherein: the utility model also comprises a brace (7), and two ends of the brace (7) are detachably arranged on the box body (11).