CN218725820U

CN218725820U - Gas collection device

Info

Publication number: CN218725820U
Application number: CN202222956221.9U
Authority: CN
Inventors: 朱仁成; 张博文; 孙文欣; 谢沛远; 张容硕; 陈宏飞; 魏阳冰; 付亚男
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-03-24
Anticipated expiration: 2032-11-07

Abstract

The utility model relates to a gas collecting device. The device includes sampling box and sampling pipe, and the sampling box includes box and box door, is equipped with air inlet and gas outlet on the sampling box, and air inlet department is equipped with the intake pipe, and the intake pipe both ends are equipped with first magnetic joint and second magnetic joint respectively. Be provided with the sampling bag in the box, the inlet end of sampling bag is equipped with magnetism and inhales the interface, and magnetism is inhaled the interface and is included the third magnetic joint. One end of the sampling pipe is provided with a fourth magnetic joint, the other end of the sampling pipe is provided with a fifth magnetic joint, and the fifth magnetic joint is adsorbed with a metal sealing cap. The collecting device also comprises a vacuum pump communicated with the air outlet. The sampling bag and the air inlet pipe and the sampling pipe are connected in an adsorption mode through the magnetic suction convenient to detach, the environment with high random sampling performance can be coped, other auxiliary equipment is not needed, the gas collection device and the sampling bag are completely capable of working independently, the gas collection device and the sampling bag are convenient to detach and store, and the whole machine is convenient to move and carry.

Description

Gas collection device

Technical Field

The utility model relates to a gaseous sample collection technical field, concretely relates to gaseous collection system.

Background

Industrialization and urbanization promote the rapid growth of social economy, but also bring about serious environmental pollution problems. To sense the emission characteristics of the contaminated gas, it is often necessary to sample and analyze the contamination. The existing gas collection device often adopts a vacuum sampling box, the vacuum sampling box comprises a sampling pump and a sampling box, a collecting bottle is arranged in the sampling box, and gas is collected into the collecting bottle in the sampling box through the air pressure difference. But the sampling pipe of being connected between sampling pump and the sampling box is longer, and the receiving flask is bulky, inconvenient accomodating when changing the sampling point and carrying.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gas collecting device to solve the portable problem of existence among the prior art not.

In order to achieve the above object, the utility model discloses a gas collecting device adopts following technical scheme: a gas collection device comprises a sampling box and a sampling pipe, wherein the sampling box comprises a box body and a box body door, an air inlet and an air outlet are formed in the sampling box, an air inlet pipe is arranged at the air inlet, a first magnetic joint is arranged at one end, located in the box body, of the air inlet pipe, and a second magnetic joint is arranged at the other end, located outside the box body, of the air inlet pipe; a sampling bag is arranged in the box body, a magnetic suction interface is arranged at the air inlet end of the sampling bag, and the magnetic suction interface comprises a third magnetic joint which is used for being adsorbed with the first magnetic joint to communicate the air inlet pipe with the sampling bag; a fourth magnetic joint is arranged at one end of the sampling pipe and is used for being adsorbed with the second magnetic joint to communicate the sampling pipe with the air inlet pipe, a fifth magnetic joint is arranged at the other end of the sampling pipe, and a metal sealing cap is adsorbed on the fifth magnetic joint; the collecting device also comprises a vacuum pump communicated with the air outlet.

The utility model discloses a vacuum pump, including box, vacuum pump, cavity, air inlet and upper and lower cavity, be provided with the plywood in the box in order to cut apart into upper chamber and cavity down with the box from top to bottom, air inlet and last cavity intercommunication, sampling bag places on last cavity, and gas outlet and cavity intercommunication down, vacuum pump set up in cavity down, are provided with the intercommunication mouth on the plywood in order to communicate upper and lower cavity, the inlet end and the intercommunication mouth intercommunication of vacuum pump, the vacuum pump is given vent to anger the end and is communicate with the gas outlet.

And a power supply is arranged in the lower cavity.

The box body is provided with a barometer for detecting the air pressure of the cavity where the sampling bag is located.

And a flowmeter or a timer is arranged on the box body.

The box body door is arranged at the upper end of the box body, and a handle is arranged on the box body door.

The utility model has the advantages that: when the box body door is closed, the box body door is in sealing fit with the box body, air in the box body is pumped and exhausted through the vacuum pump, so that vacuum is formed in the box body, the sampling bag in the box body automatically sucks an external gas sample to be sampled under the negative pressure environment, and the purpose of effective sampling is achieved. The magnetism that all inhales through convenient dismantlement between sampling bag and the intake pipe and between intake pipe and the sampling pipe is connected, can deal with the stronger environment of random sampling nature, does not need other auxiliary assembly just can independent work completely, and the gas acquisition device and the sampling bag convenient to detach of this structure are accomodate moreover, and this makes the complete machine be convenient for remove and carry to the cost of complete machine is lower.

Drawings

Fig. 1 is a schematic structural view of an embodiment of a gas collection device of the present invention;

FIG. 2 is a schematic structural diagram of a magnetic interface arranged at the air inlet end of the sampling bag in FIG. 1;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a schematic view of the sampling tube of FIG. 1;

fig. 5 is a left side view of fig. 4.

Detailed Description

The utility model discloses an embodiment of a gas collecting device, as shown in fig. 1-5, including sampling box 1 and sampling pipe 13, sampling box includes box 17 and box door 3, and in this embodiment, the box door sets up to exist with the form of box lid in the upper end of box, links together through buckle structure between box door and the box. Be provided with the sealing washer between box door and the box, the two sealed cooperation makes the inside seal chamber that becomes of sampling box after the box door closure. Be provided with air inlet and gas outlet on the sampling box, air inlet department is provided with intake pipe 7, and the one end that the intake pipe is located the box is provided with first magnetic joint 23, and the other end that the intake pipe is located the box outside is provided with second magnetic joint 20. Be provided with sampling bag 2 in the box, the inlet end of sampling bag is provided with magnetism and inhales interface 15, and magnetism is inhaled the interface and is included third magnetic joint 22, and third magnetic joint's effect is used for adsorbing in order to communicate intake pipe and sampling bag with first magnetic joint. One end of sampling pipe is provided with fourth magnetic joint 19, and fourth magnetic joint's effect is used for adsorbing in order to feed through sampling pipe and intake pipe with second magnetic joint, and the other end of sampling pipe is provided with fifth magnetic joint 18, and fifth magnetic joint adsorbs has metal seal cap 14 for the shutoff sampling pipe. In this embodiment, the sampling bag selects unified standard sampling bag. The first to fifth magnetic joint structures are the same, and as shown in fig. 2-5, they all exist in the structure of magnetic rings, and after the two magnetic rings are adsorbed together, the corresponding two pipe bodies are connected and communicated.

When dismantling or changing the sampling pipe, can directly take off the sampling pipe or with the fourth magnetic joint of sampling pipe aim at the second magnetic joint of intake pipe adsorb together can, dismantle or change the sampling bag and break off or adsorb together through corresponding magnetic joint equally. Between sampling at every turn, can use the sealed cap actuation of metal to connect the fifth magnetism, prevent that the interior gas of sampling bag from overflowing, the sampling bag is under negative pressure environment to from the outside air of waiting to adopt of sampling pipe automatic suction, avoided treating and adopt the gas formation secondary pollution, whole sampling device portable and removal in addition, complete machine cost is lower, is fit for the sampling needs of various gases.

The collecting device also comprises a vacuum pump 5 communicated with the air outlet. The vacuum pump discharges the air in the box body to form vacuum, so that the sampling bag can automatically suck a gas sample to be collected from the outside through the sampling pipe in the negative pressure environment. Specifically, in this embodiment, a laminate 21 is disposed in the box body to divide the box body into an upper cavity and a lower cavity from top to bottom, the air inlet is communicated with the upper cavity, and the sampling bag is placed on the upper cavity. The gas outlet is communicated with the lower cavity, the vacuum pump is arranged in the lower cavity, the laminate is provided with a communication port for communicating the upper cavity with the lower cavity, the gas inlet end of the vacuum pump is communicated with the communication port, and the gas outlet end of the vacuum pump is communicated with the gas outlet. Be provided with power 6 in the cavity down, the power is rechargeable battery in this embodiment, and the power sets up in the box inside together with the vacuum pump also be in the cavity down, portable. The outer side wall of the box body is provided with a power switch 11, and the vacuum pump is turned on or turned off through the power switch. The box body is provided with a barometer for detecting the air pressure of the cavity where the sampling bag is located.

The box is provided with a flow meter 9 or a timer. The flow meter is used for indicating the flow of the inlet air, and when the flow of the inlet air is reduced from low to high and then from high to near zero, the gas in the sampling bag is full. The timer definitely sets the sampling time according to the size of the sampling bag and the flow of the vacuum pump, the sampling is stopped when the sampling time is up, and the sampling tube can be sucked by a metal sealing cap to keep temporary sealing when the sampling is stopped or stopped. In this embodiment, the flow meter 9 is disposed on the casing. The sampling box can be a plastic box, such as PVC plastic. The box body door is provided with a handle 10, which is convenient for carrying. The power supply is preferably a 6-12V rechargeable battery, which is charged once to ensure that the vacuum pump continues to work for more than 2 hours, and comprises a charging port and an indicator light. The vacuum pump can be a 6-12V micro air pump with the air pumping flow of 1-10L/min.

The utility model discloses a working process does: before the sampling, open the box door at box top, will sample bag magnetism and inhale in the intake pipe, cover the box door, ensure to open switch after sealed, start the vacuum pump, the inside certain vacuum that gradually forms of sampling box, the outside air begins to be gathered to the sampling bag this moment. If a timer is installed, a sampling time of 1-5 minutes can be set depending on the size of the sampling bag and the flow setting of the vacuum pump. If the gas flowmeter is installed, when the flowmeter indicates that the flow of the inlet gas is close to zero from small to large and finally from large to small, the sampling bag is full, and the power supply can be manually cut off; at the moment, the sampling bag which has already been completely sampled can be taken out to replace a new sampling bag for next sampling operation.

Can see by above embodiment, the utility model discloses simple structure, it is convenient to dismantle, and is with low costs, does not need any auxiliary facilities just can complete autonomous working, and the sampling result is reliable, convenient removal and operation.

In other embodiments of the utility model, a timer is selected to replace the flowmeter and is arranged on the box body; the power supply can also adopt commercial power alternating current, and the power supply is replaced by a power plug; the box body door can also be arranged on the side surface of the box body; the box cover and the box body can also be connected by a hinge; the sampling box can also be made of other materials, such as other plastic materials, metal materials or rubber materials.

Claims

1. The utility model provides a gas collection system, includes sampling box and sampling pipe, its characterized in that: the sampling box comprises a box body and a box body door, an air inlet and an air outlet are formed in the sampling box, an air inlet pipe is arranged at the air inlet, a first magnetic joint is arranged at one end, located in the box body, of the air inlet pipe, and a second magnetic joint is arranged at the other end, located outside the box body, of the air inlet pipe; a sampling bag is arranged in the box body, a magnetic suction interface is arranged at the air inlet end of the sampling bag, and the magnetic suction interface comprises a third magnetic joint and is used for being adsorbed with the first magnetic joint to communicate the air inlet pipe with the sampling bag; a fourth magnetic joint is arranged at one end of the sampling pipe and is used for being adsorbed with the second magnetic joint to communicate the sampling pipe with the air inlet pipe, a fifth magnetic joint is arranged at the other end of the sampling pipe, and a metal sealing cap is adsorbed on the fifth magnetic joint; the collecting device also comprises a vacuum pump communicated with the air outlet.

2. The gas collection device of claim 1, wherein: the vacuum pump is characterized in that a laminate is arranged in the box body to divide the box body into an upper cavity and a lower cavity from top to bottom, an air inlet is communicated with the upper cavity, a sampling bag is placed on the upper cavity, an air outlet is communicated with the lower cavity, the vacuum pump is arranged in the lower cavity, a communicating port is formed in the laminate to communicate the upper cavity with the lower cavity, an air inlet end of the vacuum pump is communicated with the communicating port, and an air outlet end of the vacuum pump is communicated with the air outlet.

3. The gas collection device of claim 2, wherein: and a power supply is arranged in the lower cavity.

4. The gas collection device of claim 1, wherein: the box body is provided with a barometer for detecting the air pressure of the cavity where the sampling bag is located.

5. The gas collection device of claim 1, wherein: and a flowmeter or a timer is arranged on the box body.

6. The gas collection device of claim 1, wherein: the box body door is arranged at the upper end of the box body, and a handle is arranged on the box body door.