CN215339135U - Portable constant-current gas sampling instrument - Google Patents
Portable constant-current gas sampling instrument Download PDFInfo
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- CN215339135U CN215339135U CN202121566430.1U CN202121566430U CN215339135U CN 215339135 U CN215339135 U CN 215339135U CN 202121566430 U CN202121566430 U CN 202121566430U CN 215339135 U CN215339135 U CN 215339135U
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Abstract
The utility model relates to the technical field of gas detection auxiliary devices, in particular to a portable constant-current gas sampling instrument which can display gas flow in real time, carry out PID (proportion integration differentiation) regulation within a certain load range and keep the flow constant; the device comprises a device shell consisting of a front shell and a rear shell, wherein a diaphragm pump is arranged in the device shell, the input end of the diaphragm pump is communicated with a dustproof filter through an adapter plate, and the output end of the diaphragm pump is communicated with a buffer through a silicone tube; the dust filter comprises a front cover, a porous filter membrane, a first sealing ring and a bottom plate, the front cover is connected with the bottom plate through screws, the porous filter membrane is installed between the front cover and the bottom plate, the first sealing ring is installed between the front cover and the bottom plate, and one end of an adapter plate is fixed on the bottom plate.
Description
Technical Field
The utility model relates to the technical field of gas detection auxiliary devices, in particular to a portable constant-current gas sampling instrument.
Background
At present, the pollution of atmosphere and indoor air is serious, the analysis of pollutant components is an important means for preventing and treating pollutants, and the accurate collection of gas samples is the premise of pollutant component analysis. The constant-flow gas flow sampling instrument which is convenient to use and stable in flow is a foundation for ensuring accurate and quantitative collection of samples.
At present, gas sampling instruments commonly used at home and abroad generally have defects in load resistance, flow stability, portability, usability and intellectualization.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a portable constant-current gas sampling instrument which can display the gas flow in real time, perform PID (proportion integration differentiation) regulation within a certain load range and keep the flow constant.
The utility model relates to a portable constant-current gas sampling instrument, which comprises an equipment shell consisting of a front shell and a rear shell, wherein a diaphragm pump is arranged in the equipment shell, the input end of the diaphragm pump is communicated with a dustproof filter through an adapter plate, and the output end of the diaphragm pump is communicated with a buffer through a silicone tube;
the dustproof filter comprises a front cover, a porous filter membrane, a first sealing ring and a bottom plate, wherein the front cover is connected with the bottom plate through screws, the porous filter membrane is arranged between the front cover and the bottom plate, the first sealing ring is arranged between the front cover and the bottom plate, and one end of an adapter plate is fixed on the bottom plate;
the buffer comprises an upper cover, a buffer film, a second sealing ring, a flow-limiting nozzle, a main body and an air outlet nozzle, the silicone tube is communicated with the upper cover, the upper cover is connected with the main body through a screw, the buffer film is installed between the upper cover and the main body, the flow-limiting nozzle is installed at the output end of the main body, and the air outlet nozzle is installed at the output end of the flow-limiting nozzle through the second sealing ring in a sealing manner.
Furthermore, a clamping groove is formed in the front shell, the bottom plate is clamped at the clamping groove, and the buffer is installed on the front shell through a self-tapping screw.
Further, set up the control screen on the preceding shell, the control screen is connected with the controller, and the side of controller sets up the mouth that charges.
Furthermore, a battery is arranged in the rear shell, and a back clip is arranged on the outer side of the rear shell.
Further, the output end of the air outlet nozzle extends out of the shell of the equipment.
Further, the buffer film is made of flexible materials.
Further, a tripod connecting nut is arranged at the bottom of the front shell.
Compared with the prior art, the utility model has the beneficial effects that: the device can display the gas flow in real time, carry out PID adjustment in a certain load range and keep the flow constant.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a bottom view of the present invention;
FIG. 4 is a right side top perspective view of the present invention;
in the drawings, the reference numbers: 1. a diaphragm pump; 2. a front cover; 3. a porous filtration membrane; 4. a first seal ring; 5. a base plate; 6. an adapter plate; 7. a front housing; 8. a control screen; 9. back clamping; 10. a rear housing; 11. a battery; 12. an upper cover; 13. a buffer film; 14. a second seal ring; 15. a flow-restricting nozzle; 16. a main body; 17. a controller; 18. the mounting position of the absorption bottle; 19. an air outlet nozzle; 20. a charging port; 21. the tripod is connected with a nut.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
As shown in fig. 1 to 4, the portable constant-flow gas sampling instrument of the present invention includes an equipment housing composed of a front housing 7 and a rear housing 10, a diaphragm pump 1 is installed inside the equipment housing, an input end of the diaphragm pump 1 is communicated with a dust filter through an adapter plate 6, and an output end of the diaphragm pump 1 is communicated with a buffer through a silicone tube;
the dustproof filter comprises a front cover 2, a porous filter membrane 3, a first sealing ring 4 and a bottom plate 5, wherein the front cover 2 is connected with the bottom plate 5 through screws, the porous filter membrane 3 is arranged between the front cover 2 and the bottom plate 5, the first sealing ring 4 is arranged between the front cover 2 and the bottom plate 5, and one end of an adapter plate 6 is fixed on the bottom plate 5;
the buffer comprises an upper cover 12, a buffer membrane 13, a second sealing ring 14, a flow-limiting nozzle 15, a main body 16 and an air outlet nozzle 19, a silicone tube is communicated with the upper cover 12, the upper cover 12 and the main body 16 are connected through screws, the buffer membrane 13 is installed between the upper cover 12 and the main body 16, the flow-limiting nozzle 15 is installed at the output end of the main body 16, and the air outlet nozzle 19 is installed at the output end of the flow-limiting nozzle 15 through the second sealing ring 14 in a sealing mode.
In this embodiment, go out the other end and the flow measurement sensor intercommunication of gas nozzle 19, diaphragm pump 1 during operation, gaseous along dust filter, keysets 6, diaphragm pump 1, silicone tube, buffer flow, and porous filter membrane 3 can the separation various particulate matter impurity, and buffer film 13 can be fine restraines the air current undulant, is convenient for carry out the flow measurement.
As a preferable scheme of the above embodiment, a clamping groove is formed in the front housing 7, the bottom plate 5 is clamped at the clamping groove, and the bumper is mounted on the front housing 7 through a self-tapping screw.
In this embodiment, the installation of dust filter and buffer is more convenient, swift.
As a preferable scheme of the above embodiment, the front case 7 is provided with the control panel 8, the control panel 8 is connected with the controller 17, and the side of the controller 17 is provided with the charging port 20.
In this embodiment, the gas flow is displayed by the control panel 8 and PID-regulated by the controller 17 within a certain load range, keeping the flow constant.
As a preferable scheme of the above embodiment, the battery 11 is installed inside the rear case 10, and the back clip 9 is installed outside.
In the present embodiment, the battery 11 supplies power for normal operation of the apparatus as a whole.
As a preferable solution of the above embodiment, the output end of the air outlet nozzle 19 extends to the outside of the casing of the device.
In this embodiment, the output end of the air outlet nozzle 19 extends out of the device housing, so that the air outlet nozzle 19 is more convenient to replace.
As a preferable aspect of the above embodiment, the buffer film 13 is made of a flexible material.
In this embodiment, the buffer film 13 is made of a flexible material, so that the fluctuation of the airflow can be well suppressed, and the flow measurement can be conveniently performed.
As a preferable solution of the above embodiment, a tripod coupling nut 21 is provided at the bottom of the front case 7.
In this embodiment, through the tripod coupling nut 21 that sets up, make this device can install on the tripod fast, more be convenient for use.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A portable constant-current gas sampling instrument is characterized by comprising an equipment shell consisting of a front shell (7) and a rear shell (10), wherein a diaphragm pump (1) is arranged in the equipment shell, the input end of the diaphragm pump (1) is communicated with a dustproof filter through an adapter plate (6), and the output end of the diaphragm pump (1) is communicated with a buffer through a silicone tube;
the dustproof filter comprises a front cover (2), a porous filter membrane (3), a first sealing ring (4) and a bottom plate (5), the front cover (2) is connected with the bottom plate (5) through screws, the porous filter membrane (3) is installed between the front cover (2) and the bottom plate (5), the first sealing ring (4) is installed between the front cover (2) and the bottom plate (5), and one end of an adapter plate (6) is fixed on the bottom plate (5);
the buffer comprises an upper cover (12), a buffer membrane (13), a second sealing ring (14), a flow-limiting nozzle (15), a main body (16) and an air outlet nozzle (19), a silicone tube is communicated with the upper cover (12), the upper cover (12) is connected with the main body (16) through a screw, the buffer membrane (13) is installed between the upper cover (12) and the main body (16), the flow-limiting nozzle (15) is installed at the output end of the main body (16), and the air outlet nozzle (19) is installed at the output end of the flow-limiting nozzle (15) through the second sealing ring (14) in a sealing mode.
2. The portable constant-current gas sampling instrument according to claim 1, wherein a clamping groove is formed in the front shell (7), the bottom plate (5) is clamped in the clamping groove, and the buffer is mounted on the front shell (7) through a self-tapping screw.
3. The portable constant-current gas sampling instrument according to claim 2, wherein a control screen (8) is arranged on the front shell (7), the control screen (8) is connected with a controller (17), and a charging port (20) is arranged on the side of the controller (17).
4. A portable constant-current gas sampler as claimed in claim 3, wherein the back shell (10) has a battery (11) mounted therein and a back clip (9) mounted thereon.
5. The portable constant-current gas sampling instrument according to claim 4, wherein the output end of the gas outlet nozzle (19) extends out of the device shell.
6. A portable constant-current gas sampler according to claim 5 wherein the buffer membrane (13) is made of a flexible material.
7. A portable constant-current gas sampler as claimed in claim 6 wherein a tripod coupling nut (21) is provided at the bottom of the front housing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121566430.1U CN215339135U (en) | 2021-07-09 | 2021-07-09 | Portable constant-current gas sampling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121566430.1U CN215339135U (en) | 2021-07-09 | 2021-07-09 | Portable constant-current gas sampling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215339135U true CN215339135U (en) | 2021-12-28 |
Family
ID=79566262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121566430.1U Active CN215339135U (en) | 2021-07-09 | 2021-07-09 | Portable constant-current gas sampling instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215339135U (en) |
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2021
- 2021-07-09 CN CN202121566430.1U patent/CN215339135U/en active Active
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