CN221302899U

CN221302899U - Gas sampling device for volatile organic compound gas analysis

Info

Publication number: CN221302899U
Application number: CN202322502019.3U
Authority: CN
Inventors: 李雨燕; 林焕琛; 柯炜忠; 盘美
Original assignee: Guangdong Huanlian Testing Technology Co ltd
Current assignee: Guangdong Huanlian Testing Technology Co ltd
Priority date: 2023-09-14
Filing date: 2023-09-14
Publication date: 2024-07-09
Anticipated expiration: 2033-09-14

Abstract

The utility model discloses a gas sampling device for volatile organic compound gas analysis, which is applied to the technical field of sampling devices, and the utility model pumps air in a box body to vacuum through an air pipe by arranging an exhaust fan, so that a sampling bag pumps outside air into the bag through a flexible pipe, and the sampling bag is quickly connected with a connecting block through a mounting ring, thereby having the function of preventing gas leakage, effectively quickly disassembling and assembling the sampling bag through a vacuum self-suction mode, avoiding the problem that the sampling bag is difficult to replace in the existing gas sampling device, and greatly improving the practicability of the device; through setting up the clearance filtration that the gas that half arc cover cooperated first impurity filter screen, second impurity filter screen to the sample carried out unnecessary impurity, possess impurity filterable function, through the mode of filter screen interception, can carry out impurity filtration to the air of sample effectively, impurity content is too high in the gas of having avoided the sample leads to detecting analysis cost improvement, has improved the suitability of device greatly.

Description

Gas sampling device for volatile organic compound gas analysis

Technical Field

The utility model belongs to the technical field of gas sampling, and particularly relates to a gas sampling device for volatile organic compound gas analysis.

Background

The definition of volatile organic compounds in the environment-friendly sense refers to active volatile organic compounds, namely volatile organic compounds which can generate harm. In the research of such gases, it is first necessary to collect the gases and then to perform a detection test. A gas sampling apparatus is required for this process.

Currently, the bulletin number is: CN215339143U, which is a chinese utility model, discloses a gas sampling device, including a gas storage cylinder, a piston assembly, a gas inlet pipe and a gas outlet pipe, the gas storage cylinder is provided with a gas storage space, the piston assembly is slidingly disposed in the gas storage space, the gas inlet pipe and the gas outlet pipe are disposed at one end of the gas storage cylinder, the gas inlet pipe and the gas outlet pipe are both connected with the gas storage space, the gas outlet pipe is provided with a control valve, the gas inlet pipe is internally provided with a one-way valve which is introduced into the gas storage space from outside the gas storage cylinder, and one end of the piston assembly far away from the gas inlet pipe and the gas outlet pipe extends out of the gas storage cylinder. The utility model has the following effects: through setting up the check valve for the gas sample can only one-way lets in the gas storage space, and is difficult for the backward flow to discharge any more, thereby reaches the purpose that makes the gas sample be difficult for leaking in the gas storage space.

However, the above device still has certain defects, for example, when the existing device collects and stores the gas, the leakage condition is easy to occur, meanwhile, the collected gas is inconvenient to move after the collection is completed, the sampling device in the prior art cannot well meet the collection and sampling operation of the gas when in use, and a plurality of sampling devices need to be manually held for the collection operation, so that the inconvenience of operation is very high, the gas collected and sampled is extremely easy to mix with other gases, and impurities such as dust in the air are also mixed with the gas to be collected, so that errors occur in the detection of the gas, and the use of the sampling device is greatly limited. Based on the above problems, we provide a gas sampling apparatus for analysis of volatile organic compounds.

Disclosure of utility model

The utility model aims at a gas sampling device for volatile organic gas analysis, and has the advantages that the sampling bag is effectively and quickly assembled and disassembled, the problem that the sampling bag is difficult to replace in the conventional gas sampling device is avoided, and the practicability of the device is greatly improved.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides a gaseous sampling device for analysis of volatile organic compounds gas, includes the box, the both sides bolt on the positive upper portion of box inner chamber has the fixed block, the bottom bolt of fixed block has the spring area, the bottom bolt of spring area has the plug connector, the both sides bolt of the positive lower part of box inner chamber has the slot, and the inboard and the plug connector mutual joint of slot, the inboard centre gripping of spring area has the sample bag, the center bolt at box top has the air exhauster, the left side intercommunication of air exhauster has the trachea, and the left side intercommunication of tracheal other end and box top, the right side threaded connection of sample bag has the collar, the right side intercommunication of collar has the connecting pipe, the right side of connecting pipe passes the box bolt and has the flexible pipe, the other end intercommunication of flexible pipe has the handle, the bottom bolt of handle has an air cylinder, the bottom air entraining of guide is connected with filtering mechanism.

The technical scheme is adopted: the air in the box body is pumped to vacuum through the air pipe by the exhaust fan, so that the sampling bag pumps outside air into the bag through the flexible pipe and is quickly connected with the connecting block through the mounting ring, the air leakage prevention function is realized, the sampling bag can be effectively and quickly disassembled in a vacuum self-suction mode, the problem that the sampling bag is difficult to replace in the existing air sampling device is solved, and the practicability of the device is greatly improved; through setting up the clearance filtration that the gas that half arc cover cooperated first impurity filter screen, second impurity filter screen to the sample carried out unnecessary impurity, possess impurity filterable function, through the mode of filter screen interception, can carry out impurity filtration to the air of sample effectively, impurity content is too high in the gas of having avoided the sample leads to detecting analysis cost improvement, has improved the suitability of device greatly.

The utility model further provides that the filtering mechanism comprises a conical pipe, the top of the conical pipe is connected with the inner side of the air entraining cylinder through threads, the inner side of the conical pipe is bolted with the first impurity filter screen, the bottom of the conical pipe is bolted with the semi-arc-shaped cover, the surface of the semi-arc-shaped cover is provided with the air entraining groove, and the inner side of the air entraining groove is bolted with the second impurity filter screen.

The technical scheme is adopted: make conical tube and bleed air section of thick bamboo carry out quick connect through the spiral line, can dismantle simultaneously fast to carry out impurity filtration to the sample gas of drawing in through first impurity filter screen and second impurity filter screen.

The utility model is further arranged that the inner side of the handle is provided with a ventilation groove.

The technical scheme is adopted: allowing gas to enter the flexible tube through the vent slot.

The utility model is further arranged that the middle part of the surface of the handle is bolted with a gas stop valve.

The technical scheme is adopted: the air vent groove is conveniently blocked and sealed by a user through the air stop valve.

The utility model is further arranged that the right side of the upper part of the front surface of the box body is bolted with a sealing door.

The technical scheme is adopted: the box body is integrally sealed through the sealing door.

The utility model is further arranged that two sides of the lower part of the inner cavity of the box body are connected with the cabinet body in a sliding way.

The technical scheme is adopted: the user can conveniently place sundries or sampling bags to be replaced through the cabinet body.

The utility model is further arranged that the bottom of the inner cavity of the box body is bolted with a battery.

The technical scheme is adopted: the exhaust fan is provided with continuous power through a battery.

The utility model is further arranged that flexible braces are bolted to two sides of the back of the box body.

The technical scheme is adopted: the user of being convenient for carries the box on the back through flexible braces, is convenient for sampling device's removal, improves the portability of device.

In summary, the utility model has the following beneficial effects:

1. according to the utility model, the exhaust fan is arranged to pump air in the box body to vacuum through the air pipe, so that the sampling bag pumps outside air into the bag through the flexible pipe, and the sampling bag is quickly connected with the connecting block through the mounting ring, thereby having the function of preventing gas leakage, and the sampling bag can be effectively and quickly disassembled in a vacuum self-suction mode, so that the problem that the sampling bag is difficult to replace in the conventional gas sampling device is avoided, and the practicability of the device is greatly improved;

2. According to the utility model, the semi-arc-shaped cover is arranged to be matched with the first impurity filter screen and the second impurity filter screen to clean and filter redundant impurities of sampled gas, so that the device has the function of filtering impurities, and the sampled air can be effectively filtered through the interception mode of the filter screens, so that the detection and analysis cost is prevented from being increased due to the fact that the impurity content in the sampled gas is too high, and the applicability of the device is greatly improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a front elevational view of the overall structure of the present utility model;

FIG. 3 is a front cross-sectional view of the overall structure of the present utility model;

Fig. 4 is an enlarged view of the structure of fig. 3 a according to the present utility model.

Reference numerals: 1. a case; 2. a fixed block; 3. a spring strap; 4. a plug-in component; 5. a slot; 6. a sampling bag; 7. an exhaust fan; 8. an air pipe; 9. a mounting ring; 10. a connecting pipe; 11. a flexible tube; 12. a handle; 13. an air introducing cylinder; 14. a filtering mechanism; 15. a vent groove; 16. an air stop valve; 17. sealing the door; 18. a cabinet body; 19. a battery supply; 20. a flexible harness; 141. a conical tube; 142. a first impurity filtering screen; 143. a semi-arc shaped cover; 144. a bleed air tank; 145. and a second impurity filtering net.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Example 1:

Referring to fig. 1, 2 and 3, a gas sampling device for analysis of volatile organic compound gas comprises a box body 1, wherein fixing blocks 2 are bolted to two sides of the upper portion of the front surface of the inner cavity of the box body 1, a spring belt 3 is bolted to the bottom of each fixing block 2, a plug connector 4 is bolted to the bottom of each spring belt 3, a slot 5 is bolted to two sides of the lower portion of the front surface of the inner cavity of the box body 1, the inner side of each slot 5 is clamped with the plug connector 4, a sampling bag 6 is clamped to the inner side of each spring belt 3, and an exhaust fan 7 is bolted to the center of the top of the box body 1.

Referring to fig. 2 and 3, the filtering mechanism 14 includes a conical tube 141, and the top of the conical tube 141 is in threaded connection with the inner side of the air entraining cylinder 13, a first impurity filtering screen 142 is bolted to the inner side of the conical tube 141, a semi-arc-shaped cover 143 is bolted to the bottom of the conical tube 141, an air entraining groove 144 is formed in the surface of the semi-arc-shaped cover 143, and a second impurity filtering screen 145 is bolted to the inner side of the air entraining groove 144, so that the conical tube 141 and the air entraining cylinder 13 are quickly connected through spiral threads, and meanwhile, the first impurity filtering screen 142 and the second impurity filtering screen 145 can quickly detach and filter the pumped sampling gas.

Referring to fig. 2 and 3, the inside of the handle 12 is provided with a vent slot 15, so that gas can enter the flexible tube 11 through the vent slot 15.

Referring to fig. 2 and 3, a gas stop valve 16 is bolted to the middle of the surface of the handle 12, so that a user can block and close the ventilation slot 15 through the gas stop valve 16.

Referring to fig. 1 and 2, a sealing door 17 is bolted to the right side of the upper front portion of the case 1, and the case 1 is integrally sealed by the sealing door 17.

The use process is briefly described: during the use of the device, firstly, the plug-in connector 4 is taken out of the slot 5, the spring band 3 is loose from fixation, then the sampling bag 6 is placed on the inner side of the spring band 3, the spring band 3 is fixed in the slot 5 again, then the right side of the sampling bag 6 is fixed with the mounting ring 9 in a threaded manner, the exhaust fan 7 is started, the exhaust fan 7 can suck air in the box body 1 through the air pipe 8 until the air is nearly in vacuum, then a user can hold the handle 12 and perform air collection on a region needing to be sampled, after the completion, the spring band 3 is opened, and the sampling bag 6 is taken down through the mounting ring 9.

Example 2:

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, a gas sampling device for analyzing volatile organic compound gas, which comprises an exhaust fan 7, wherein the left side of the exhaust fan 7 is communicated with a gas pipe 8, the other end of the gas pipe 8 is communicated with the left side of the top of a box body 1, a right side thread of a sampling bag 6 is connected with a mounting ring 9, the right side of the mounting ring 9 is communicated with a connecting pipe 10, the right side of the connecting pipe 10 penetrates through the box body 1 and is bolted with a flexible pipe 11, the other end of the flexible pipe 11 is communicated with a handle 12, the bottom of the handle 12 is bolted with a gas guiding cylinder 13, and the bottom of the gas guiding cylinder 13 is bolted with a filtering mechanism 14.

Referring to fig. 1, 2 and 3, two sides of the lower portion of the inner cavity of the case 1 are slidably connected with a cabinet 18, so that a user can conveniently place sundries or sampling bags 6 to be replaced through the cabinet 18.

Referring to fig. 3, a power supply 19 is bolted to the bottom of the interior of the housing 1, and continuous power is supplied to the suction fan 7 by the power supply 19.

Referring to fig. 1, flexible braces 20 are bolted to both sides of the back of the case 1, so that a user can carry the case 1 on his back through the flexible braces 20, and the movement of the sampling device is facilitated, thereby improving the portability of the device.

The use process is briefly described: during the use of the device, air is pumped into the flexible pipe 11 due to the negative pressure in the box body 1, in the process, the air firstly passes through the filtering mechanism 14, and then enters the flexible pipe 11 again after being subjected to double-layer filtering of the filtering mechanism 14, and when the collection is required to be stopped, a user can close the air stop valve 16.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims

1. The utility model provides a volatile organic compounds gas analysis is with gas sampling device, includes box (1), its characterized in that: the utility model discloses a filter cartridge, including box (1), spring band (3), box (1), sample bag (6) are held to the inboard of spring band (3), the both sides bolt on the positive upper portion of box (1), the bottom bolt of fixed block (2) has spring band (3), the bottom bolt of spring band (3) has plug connector (4), the both sides bolt of the positive lower part of box (1) has slot (5), and the inboard of slot (5) and plug connector (4) each other joint, sample bag (6) are held to the inboard clamp of spring band (3), the center bolt at box (1) top has air exhauster (7), the left side intercommunication of air exhauster (7) has trachea (8), and the left side intercommunication at the other end at air duct (8) and box (1) top, the right side threaded connection of sample bag (6) has collar (9), the right side intercommunication of collar (9) has connecting pipe (10), the right side of connecting pipe (10) is passed box (1) bolt and is had flexible pipe (11), the other end intercommunication of flexible pipe (11) has handle (12), the bottom of air entrainment (13) bolt mechanism (13).

2. The gas sampling apparatus for analysis of volatile organic compound gas according to claim 1, wherein: the filtering mechanism (14) comprises a conical tube (141), the top of the conical tube (141) is in threaded connection with the inner side of the air entraining cylinder (13), a first impurity filter screen (142) is bolted to the inner side of the conical tube (141), a semi-arc-shaped cover (143) is bolted to the bottom of the conical tube (141), an air entraining groove (144) is formed in the surface of the semi-arc-shaped cover (143), and a second impurity filter screen (145) is bolted to the inner side of the air entraining groove (144).

3. The gas sampling apparatus for analysis of volatile organic compound gas according to claim 1, wherein: an air vent groove (15) is formed in the inner side of the handle (12).

4. The gas sampling apparatus for analysis of volatile organic compound gas according to claim 1, wherein: the middle part of the surface of the handle (12) is bolted with a gas-stop valve (16).

5. The gas sampling apparatus for analysis of volatile organic compound gas according to claim 1, wherein: the right side of the front upper part of the box body (1) is bolted with a sealing door (17).

6. The gas sampling apparatus for analysis of volatile organic compound gas according to claim 1, wherein: two sides of the lower part of the inner cavity of the box body (1) are connected with a cabinet body (18) in a sliding manner.

7. The gas sampling apparatus for analysis of volatile organic compound gas according to claim 1, wherein: the bottom of the inner cavity of the box body (1) is bolted with a power supply (19).

8. The gas sampling apparatus for analysis of volatile organic compound gas according to claim 1, wherein: two sides of the back of the box body (1) are bolted with flexible braces (20).