CN216082207U

CN216082207U - Gas sampling device

Info

Publication number: CN216082207U
Application number: CN202121932994.2U
Authority: CN
Inventors: 薛海英
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-03-18
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses a gas sampling device, comprising: a sampling bag; the valve component comprises a shell, a first one-way valve and a second one-way valve, wherein the first one-way valve and the second one-way valve are both connected to the shell, and the first one-way valve is communicated with the sampling bag; the inflator is held by hand, the shell is communicated, the inflator is held by hand, the first one-way valve is opened, and the second one-way valve is closed; the hand-pinch inflator is loosened, the first one-way valve is closed, the second one-way valve is opened, the arranged valve assembly is matched with the hand-pinch inflator, the hand-pinch inflator is used for inflating the sampling bag, and meanwhile, due to the limiting effect of the first one-way valve, gas in the sampling bag cannot escape, so that the gas in the sampling bag can be analyzed to obtain an accurate and applicable result; in addition, the valve member can remove at will, and the hand is held between the fingers the inflates in the bag of just once pressing once to sampling, and like this, operating personnel can hold sampling bag, valve member and the hand is held between the fingers the inflater and is removed, and the sample range is wide.

Description

Gas sampling device

Technical Field

The utility model relates to the technical field of sampling equipment, in particular to a gas sampling device.

Background

In the environment evaluation process, the air needs to be evaluated, the air needs to be sampled, and the sampling can be carried out by using a gas sampling device.

In the past, the plastic bag is adopted for air sampling as a gas sampling device, the air sample is taken by the manually operated plastic bag pocket, the mode of taking the air sample by the plastic bag pocket is small in sampling range, the sample gas is easy to escape, and the taken air sample is difficult to analyze out an accurate result.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a gas sampling device, which is not easy to escape sampled gas, so that the sampled gas can be analyzed to obtain an accurate result.

A gas sampling apparatus according to an embodiment of a first aspect of the utility model, comprises: a sampling bag; the valve component comprises a shell, a first one-way valve and a second one-way valve, the first one-way valve and the second one-way valve are both connected to the shell, and the first one-way valve is communicated with the sampling bag; the hand-pinch inflator is communicated with the shell, the first one-way valve is opened when the hand-pinch inflator is pressed, and the second one-way valve is closed; and when the hand-pinching inflator is released, the first one-way valve is closed, and the second one-way valve is opened.

The gas sampling device provided by the embodiment of the utility model has at least the following beneficial effects: the valve assembly is matched with the hand-pinch inflator, the hand-pinch inflator is used for inflating the sampling bag, and meanwhile gas in the sampling bag cannot escape due to the limiting effect of the first one-way valve, so that the gas in the sampling bag can be analyzed to obtain an accurate and applicable result; in addition, the valve component can move freely, and the hand-pinch inflator can charge air into the sampling bag once when being pressed once, so that an operator can hold the sampling bag, the valve component and the hand-pinch inflator to move, can sample in multiple places in a certain space, and the sampling range is wide.

According to some embodiments of the utility model, the sampling device further comprises a hose, the second one-way valve is communicated with the hose, and the hose can be arranged to extend to a spatial position which is difficult for an operator to go to, so that sampling is convenient.

According to some embodiments of the utility model, the gas sampling device further comprises a telescopic rod, wherein a clamping head is arranged on the telescopic rod, the clamping head is used for clamping the free end of the hose, when a specific gas sample is taken, a gas sample which is higher than the ground by a preset distance needs to be taken, and the telescopic rod can be used for extending the free end of the hose to a higher position.

According to some embodiments of the utility model, the sampling bag is provided with a containing bag, and the telescopic rod can be contained in the containing bag, so that the telescopic rod is convenient to store, and the whole gas sampling device is convenient to carry.

According to some embodiments of the utility model, the sampling bag is communicated with a pressure gauge, and the pressure gauge is used for indicating the air pressure in the sampling bag and preventing the first one-way valve from failing or the sampling bag from being broken due to overhigh air pressure in the sampling bag.

According to some embodiments of the utility model, the sampling bag is provided with an air faucet which is used for communicating with the first one-way valve, the air faucet is provided with a ball valve which is used for controlling the air faucet to be communicated or blocked, the valve component is convenient to disassemble and is separately stored and carried.

According to some embodiments of the present invention, the sampling bag is covered with a light shielding layer to prevent external light from affecting the sampled gas and control variables.

According to some embodiments of the utility model, the sampling bag is provided with a handle to facilitate carrying of the sampling bag.

According to some embodiments of the utility model, the hand-pinch air pump is made of plastic or rubber, and the negative pressure is conveniently and quickly produced by the elastic recovery of the hand-pinch air pump.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a gas sampling device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the air sampling device shown in FIG. 1 illustrating the flow of air when the pump is manually squeezed;

fig. 3 is a schematic view of the gas sampling assembly of fig. 1 showing the flow of gas when the pump is released by hand.

A sampling bag 100, a handle 110, a containing bag 120, a pressure gauge 130, an air tap 140 and a ball valve 141;

valve assembly 200, housing 210, first check valve 220, second check valve 230;

the inflator 300 and the hose 400 are pinched by hands;

the telescopic rod 500 and the clamping head 510.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 3, a gas sampling device includes: a sampling bag 100; the valve assembly 200 comprises a shell 210, a first one-way valve 220 and a second one-way valve 230, wherein the first one-way valve 220 and the second one-way valve 230 are both connected to the shell 210, and the first one-way valve 220 is communicated with the sampling bag 100; when the inflator 300 is pinched by hand, the shell 210 is communicated, and the inflator 300 is pinched by hand, the first one-way valve 220 is opened, and the second one-way valve 230 is closed; when the pump 300 is released, the first check valve 220 is closed and the second check valve 230 is opened. The valve assembly 200 is matched with the hand-pinch inflator 300, the hand-pinch inflator 300 is used for inflating the sampling bag 100, and meanwhile, due to the limiting effect of the first one-way valve 220, gas in the sampling bag 100 cannot escape, so that the gas in the sampling bag 100 can be analyzed to obtain an accurate and applicable result; in addition, valve assembly 200 can move at will, and the hand is held the inflates once to the sample bag of pressing inflator 300 once, and like this, operating personnel can hold sample bag 100, valve assembly 200 and the hand is held the inflator 300 and is removed, can take a sample in many places in certain extent space, and the sample range is wide.

In some embodiments, a hose 400 is further included, the second check valve 230 communicates with the hose 400, and the hose 400 can be extended to a spatial position difficult for an operator to reach, so as to facilitate sampling, and it is understood that the hose 400 is a rubber hose.

In some embodiments, the telescopic rod 500 is further included, a clamping head 510 is disposed on the telescopic rod 500, the clamping head 510 is used for clamping the free end of the hose 400, and for sampling a specific gas, a gas sample at a predetermined distance above the ground is required to be sampled, and the telescopic rod 500 can be used to extend the free end of the hose 400 to a higher position. It will be appreciated that the gripping head 510 may be a clip or a receptacle having a bore diameter smaller than the outer diameter of the hose 400. It will be appreciated that the free end of hose 400 is the end of hose 400 to which it is not connected.

In some embodiments, the sampling bag 100 is provided with a containing bag 120, and the telescopic rod 500 can be contained in the containing bag 120, so that the telescopic rod 500 is convenient to store, and the whole gas sampling device is convenient to carry.

In some embodiments, the sampling bag 100 is connected to a pressure gauge 130, and the pressure gauge 130 is used to indicate the air pressure in the sampling bag 100, so as to prevent the first one-way valve 220 from failing or the sampling bag 100 from rupturing due to too high air pressure in the sampling bag 100.

In some embodiments, the sampling bag 100 is provided with a nozzle 140, the nozzle 140 is used for communicating with the first one-way valve 220, a ball valve 141 is provided on the nozzle, and the ball valve 141 is used for controlling the nozzle 140 to be connected or blocked, so that the valve assembly 200 can be conveniently detached and can be stored and carried separately. It will be appreciated that the ball valve 141 may be replaced by a cap with which to screw on the air spout 140. The ball valve 141 may also be replaced with a third check valve.

In some embodiments, the sampling bag 100 is covered with a light shielding layer to prevent external light from affecting the sampling gas, and the variables are controlled, so that it can be understood that, for the gas obtained by sampling, if the gas is illuminated to the lower part, some gas is inevitably denatured, which may result in inaccurate measurement results, and therefore, the light shielding layer is required to cover the sampling bag 100.

In some embodiments, a handle 110 is provided on the sampling bag 100 to facilitate carrying the sampling bag 100.

In some embodiments, the hand-squeezed air pump 300 is made of plastic or rubber, and the negative pressure is conveniently and quickly generated by the elastic recovery of the hand-squeezed air pump 300.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A gas sampling device, comprising:

a sampling bag;

the valve component comprises a shell, a first one-way valve and a second one-way valve, the first one-way valve and the second one-way valve are both connected to the shell, and the first one-way valve is communicated with the sampling bag;

the hand-pinch inflator is communicated with the shell, the first one-way valve is opened when the hand-pinch inflator is pressed, and the second one-way valve is closed; and when the hand-pinching inflator is released, the first one-way valve is closed, and the second one-way valve is opened.

2. A gas sampling assembly as defined in claim 1 wherein: still include the hose, second check valve intercommunication the hose.

3. A gas sampling assembly as defined in claim 2 wherein: the hose clamp is characterized by further comprising a telescopic rod, wherein a clamping head is arranged on the telescopic rod and used for clamping the free end of the hose.

4. A gas sampling assembly as claimed in claim 3, wherein: the sampling bag is provided with a containing bag, and the telescopic rod can be contained in the containing bag.

5. A gas sampling assembly as defined in claim 1 wherein: the sampling bag is communicated with a pressure gauge, and the pressure gauge is used for indicating the air pressure in the sampling bag.

6. A gas sampling assembly as defined in claim 1 wherein: the sampling bag is provided with an air faucet which is used for being communicated with the first one-way valve, the air faucet is provided with a ball valve, and the ball valve is used for controlling the air faucet to be communicated or blocked.

7. A gas sampling assembly as defined in claim 1 wherein: the sampling bag is coated with a light shielding layer.

8. A gas sampling apparatus as claimed in any of claims 1 to 7, wherein: the sampling bag is provided with a handle.

9. A gas sampling assembly as defined in claim 1 wherein: the hand-pinching inflator is made of plastic or rubber.