CN211954892U

CN211954892U - Sampling device of gas detector

Info

Publication number: CN211954892U
Application number: CN202020568715.8U
Authority: CN
Inventors: 崔国艺
Original assignee: Shenzhen Wosaite Technology Co ltd
Current assignee: Shenzhen Wosaite Technology Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-11-17
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses a sampling device of gas detection appearance, including main part, inlet manifold and sampling tube, outside one side intercommunication of main part has the inlet manifold, the inlet manifold shunts into the inlet branch pipe, the other end of inlet branch pipe is equipped with the inlet manifold, the inlet manifold comprises the reservoir, the vacuum pump is installed on the top of inlet manifold, the bottom intercommunication of vacuum pump has the exhaust tube, the middle part intercommunication of inlet manifold opposite side has communicating pipe, the communicating pipe other end is equipped with miniature air pump, the end intercommunication of giving vent to anger of miniature air pump has the sampling tube, the inside one end that is close to miniature air pump of sampling tube is equipped with the piston, piston one side is equipped with the spring, the top intercommunication at sampling tube middle part has the air duct. The utility model discloses avoid waiting to detect that gas and air mix lead to its concentration to descend, the sample of once taking a sample divides the cubic to detect, avoids detecting the contingency error to appear, guarantees the accuracy of gaseous testing result.

Description

Sampling device of gas detector

Technical Field

The utility model relates to a gaseous detection technology field especially relates to a sampling device of gas detector.

Background

The gas detector is a detection instrument frequently used in working and living of people, and can be used for measuring various gas concentrations according to the type of a gas sensor arranged in the gas detector. The gas detector needs to use a sampling device to sample gas, so as to facilitate detection.

The sampling device of the existing gas detector is easy to mix air in the sampling device, so that the concentration of gas to be detected is reduced, and the detection accuracy is influenced; the sampling device of the existing gas detector samples the sample once, and the sample once is detected, so that the error is easy to occur in the result of detection, and the detection result is accidental.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a sampling device of a gas detector.

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

a sampling device of a gas detector comprises a main body, an air inlet chamber and a sampling tube, wherein one side of the outer part of the main body is communicated with an air inlet main pipe, the air inlet main pipe extends into the main body, the air inlet main pipe is divided into air inlet branch pipes, the other ends of the air inlet branch pipes are provided with air inlet chambers, the air inlet chamber consists of an air storage chamber, the top end of the air inlet chamber is provided with a vacuum pump, the bottom end of the vacuum pump is communicated with an air exhaust pipe, the air suction pipe extends into the air inlet chamber, the middle part of the other side of the air inlet chamber is communicated with a communicating pipe, the other end of the communicating pipe is communicated with a micro air pump, the air outlet end of the micro air pump is communicated with a sampling pipe, a piston is connected to one end of the interior of the sampling tube close to the micro air pump in a sliding manner, a spring is welded on one side of the piston, the other end of the spring is welded with the other end of the inner part of the sampling tube, and the top of the middle part of the sampling tube is communicated with an air duct.

Preferably, the number of the air inlet branch pipes is three, the number of the air storage chambers is equal to that of the air inlet branch pipe boxes, and the air inlet branch pipes extend into the air storage chambers respectively.

Preferably, the air inlet main pipe is provided with a valve, the partition plate at the middle part of the air storage chamber is internally provided with a valve, and the air guide pipe and the sampling pipe are communicated and stored with a valve.

Preferably, the side of the exhaust tube is communicated with three exhaust branch tubes, and the three exhaust branch tubes are respectively positioned in the three air storage chambers.

Preferably, the top end of the vacuum pump is communicated with an exhaust pipe, and the other end of the exhaust pipe extends out of the main body.

Preferably, the other end of the gas guide pipe is communicated with a gas sensor, the other end of the gas sensor is communicated with a gas outlet pipe, and the other end of the gas outlet pipe extends out of the main body.

Preferably, the other side of the bottom of the sampling tube is communicated with a vent pipe, the other end of the vent pipe extends out of the main body, and a display screen is arranged in the middle of one side of the outer portion of the main body.

The utility model has the advantages that:

1. the utility model discloses earlier all take the inside air of gas receiver out through the vacuum pump, make the interior vacuum that forms of gas receiver, the rethread pressure is strong to be used for waiting to detect gaseous to take out to the gas receiver, the miniature air pump of rethread waits to detect gaseous in with the gas receiver and lets in the sampling tube, gaseous promotion piston moves right, arrange the air in the sampling tube to the external world through the breather pipe, it gets into gas sensitive sensor through the air duct and detects to wait to detect gaseous, all do not contain the air in the whole sampling process, avoid waiting to detect gaseous and air mixing and lead to its concentration decline, guarantee the accuracy of gaseous testing result.

2. The utility model discloses to wait that it lets in three reservoir respectively inside to detect gas, detect through the gas of the reservoir inside at miniature air pump extraction middle part earlier, extract the gas of the reservoir inside of top and bottom in proper order again and detect, the sample of once taking a sample divides the cubic to detect, avoids detecting the appearance accidental error, guarantees the accuracy of gaseous testing result.

Drawings

Fig. 1 is a schematic structural diagram of a sampling device of a gas detector according to the present invention;

fig. 2 is an external schematic view of a sampling device of a gas detector according to the present invention;

fig. 3 is a schematic side view of an air inlet chamber of a sampling device of a gas detector according to the present invention.

In the figure: 1. an air intake chamber; 2. an intake branch pipe; 3. an intake manifold; 4. an air storage chamber; 5. a main body; 6. an exhaust pipe; 7. a vacuum pump; 8. an air exhaust pipe; 9. a valve; 10. a communicating pipe; 11. a micro air pump; 12. a gas sensor; 13. an air duct; 14. a piston; 15. a sampling tube; 16. a spring; 17. a breather tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a sampling device of a gas detector comprises a main body 5, an air inlet chamber 1 and a sampling tube 15, wherein one side of the outside of the main body 5 is communicated with an air inlet manifold 3, the air inlet manifold 3 extends into the main body 5, the air inlet manifold 3 is divided into air inlet branch tubes 2, the other ends of the air inlet branch tubes 2 are provided with the air inlet chamber 1, the air inlet chamber 1 is composed of air storage chambers 4, the top end of the air inlet chamber 1 is provided with a vacuum pump 7, the bottom end of the vacuum pump 7 is communicated with an air exhaust tube 8, the air exhaust tube 8 extends into the air inlet chamber 1, the vacuum pump 7 is started to uniformly exhaust air in the air storage chamber 4 through the air exhaust tube 8, so that vacuum is formed in the air storage chamber 4, the middle part of the other side of the air inlet chamber 1 is communicated with a communicating tube 10, the other end of the communicating tube 10 is communicated with, the miniature air pump 11 extracts the gas that waits to detect in the gas receiver 4 at middle part and lets in sampling tube 15, and gas promotes piston 14 and moves right, and piston 14 one side welding has spring 16, and spring 16 can make piston 14 recover the normal position, and the other end of spring 16 and the inside other end welding of sampling tube 15, and the top intercommunication in sampling tube 15 middle part has air duct 13.

In the utility model, three air inlet branch pipes 2 are arranged, the number of the air storage chambers 4 and the box bodies of the air inlet branch pipes 2 are arranged, the air inlet branch pipes 2 respectively extend into the air storage chambers 4, the valves 9 are arranged on the air inlet header pipes 3, the valves 9 are arranged in the partition plates at the middle parts of the air storage chambers 4, the air duct 13 is communicated with the sampling pipe 15 and is provided with the valves 9, the side surface of the air exhaust pipe 8 is communicated with the air exhaust branch pipes, the three air exhaust branch pipes are respectively arranged in the three air storage chambers 4, the top end of the vacuum pump 7 is communicated with the exhaust pipe 6, the other end of the exhaust pipe 6 extends out of the main body 5, the other end of the air duct 13 is communicated with the air-sensitive sensor 12, the other end of the air-sensitive sensor 12 is communicated with the air outlet pipe, the other end of the air outlet pipe extends out, the middle part of the external side of the main body 5 is provided with a display screen, and the display screen displays a detection result.

The working principle is as follows: firstly starting a vacuum pump 7 to pump air in the air storage chamber 4 through an air pumping pipe 8 to form vacuum in the air storage chamber 4, placing the other end of an air inlet main pipe 3 at a position where the air needs to be sampled, opening a valve 9 on the air inlet main pipe 3, pumping the gas to be detected to the air storage chamber 4 through the pressure effect, closing the valve 9 on the air inlet main pipe 3, then starting a micro air pump 11 to pump the gas to be detected in the air storage chamber 4 at the middle part and introducing the gas to a sampling pipe 15, pushing a piston 14 to move rightwards by the gas, exhausting the air in the sampling pipe 15 to the outside through a vent pipe 17, opening the valve 9 between the sampling pipe 15 and a gas guide pipe 13, introducing the gas to be detected to a gas-sensitive sensor 12 through the gas guide pipe 13 for detection, exhausting the gas after detection from a gas outlet pipe, then opening the valve 9 in a middle partition plate of the air storage, the sample of once taking a sample divides the cubic to detect, avoids detecting the accidental error that appears, and whole sampling in-process does not all contain the air, avoids waiting to detect gas and air mixing and leads to its concentration to descend, guarantees the accuracy of gas detection result.

Having shown and described the basic principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof, and it is therefore intended that the embodiments be considered as exemplary and not limiting in any way, since the scope of the invention is defined by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein and are therefore not to be embraced therein by any reference numerals in the claims.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A sampling device of a gas detector comprises a main body (5), an air inlet chamber (1) and a sampling tube (15), and is characterized in that one side of the outside of the main body (5) is communicated with an air inlet main pipe (3), the air inlet main pipe (3) extends into the main body (5), the air inlet main pipe (3) is divided into air inlet branch pipes (2), the other end of each air inlet branch pipe (2) is provided with the air inlet chamber (1), the air inlet chamber (1) is composed of an air storage chamber (4), the top end of the air inlet chamber (1) is provided with a vacuum pump (7), the bottom end of the vacuum pump (7) is communicated with an air pumping tube (8), the air pumping tube (8) extends into the air inlet chamber (1), the middle part of the other side of the air inlet chamber (1) is communicated with a communicating pipe (10), the other end of the communicating pipe (10) is provided with a miniature air pump (11), and the air outlet end of the, the inside one end that is close to miniature air pump (11) of sampling tube (15) is equipped with piston (14), piston (14) one side is equipped with spring (16), the other end and the inside other end of sampling tube (15) of spring (16) are connected, the top intercommunication at sampling tube (15) middle part has air duct (13).

2. The sampling device of a gas detector according to claim 1, characterized in that the number of the inlet branch pipes (2) is three, the number of the air storage chambers (4) and the number of the inlet branch pipes (2) are equal, and the inlet branch pipes (2) respectively extend into the air storage chambers (4).

3. The sampling device of a gas detector according to claim 2, wherein the air inlet manifold (3) is provided with a valve (9), the valve (9) is arranged inside the partition plate in the middle of the air storage chamber (4), and the air guide tube (13) and the sampling tube (15) are communicated and provided with the valve (9).

4. The sampling device of a gas detector according to claim 3, wherein the side of the air suction pipe (8) is connected with three air suction branch pipes, and the three air suction branch pipes are respectively located inside the three air storage chambers (4).

5. The sampling device of a gas detector according to claim 4, wherein the top end of the vacuum pump (7) is connected to an exhaust pipe (6), and the other end of the exhaust pipe (6) extends out of the main body (5).

6. A sampling device of a gas detector according to claim 5, wherein the other end of the gas guide tube (13) is communicated with a gas sensor (12), the other end of the gas sensor (12) is communicated with a gas outlet tube, and the other end of the gas outlet tube extends out of the main body (5).

7. The sampling device of claim 6, wherein the other side of the bottom of the sampling tube (15) is connected with a vent pipe (17), the other end of the vent pipe (17) extends out of the main body (5), and a display screen is mounted in the middle of one side of the outer part of the main body (5).