CN221007488U - Compressed air quality comprehensive analysis device for respiratory protection - Google Patents
Compressed air quality comprehensive analysis device for respiratory protection Download PDFInfo
- Publication number
- CN221007488U CN221007488U CN202322566105.0U CN202322566105U CN221007488U CN 221007488 U CN221007488 U CN 221007488U CN 202322566105 U CN202322566105 U CN 202322566105U CN 221007488 U CN221007488 U CN 221007488U
- Authority
- CN
- China
- Prior art keywords
- compressed air
- cover plate
- explosion
- respiratory protection
- touch screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000241 respiratory effect Effects 0.000 title claims abstract description 22
- 238000004458 analytical method Methods 0.000 title claims abstract description 18
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000004880 explosion Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005085 air analysis Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- 238000001514 detection method Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 208000000059 Dyspnea Diseases 0.000 description 1
- 206010013975 Dyspnoeas Diseases 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013075 data extraction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000026058 directional locomotion Effects 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a compressed air quality comprehensive analysis device for respiratory protection, which belongs to the technical field of compressed air analysis instruments and comprises an explosion-proof box body, wherein an integrated power supply, an integrated sensor, a flowmeter, a pressure reducer and a gas slow flow device are fixedly arranged at the bottom of an inner cavity of the explosion-proof box body, the integrated sensor, the flowmeter, the pressure reducer and the gas slow flow device are electrically connected with the integrated power supply, a cover plate is fixedly arranged at an opening of the explosion-proof box body, an air inlet connecting end and an air outlet are arranged on the upper surface of the cover plate, the air inlet connecting end, the pressure reducer, the flowmeter and the integrated sensor are sequentially connected through an air duct, the integrated sensor, the gas slow flow device and the air outlet are sequentially connected through the air duct, a touch screen is embedded into the upper surface of the cover plate, and the touch screen is electrically connected with the integrated sensor and the integrated power supply.
Description
Technical Field
The utility model belongs to the technical field of compressed air analysis instruments, and particularly relates to a compressed air quality comprehensive analysis device for respiratory protection.
Background
The compressed air for respiratory protection is compressed air filled in a composite gas cylinder for a respirator and is used for firefighters, chemical safety operation personnel and rescue workers to breathe when working in a toxic and harmful gas environment so as to avoid personnel poisoning; however, due to the influence of factors such as the filtering performance of the air compressor and the air quality in the filling environment, the compressed air filled in the air bottle cannot meet the standard requirements of GB/T31975-2015 technical requirements for compressed air for respiratory protection, not only does the air bottle play a role in protection, but also serious consequences such as pneumoconiosis, dizziness, hypoxia and the like can be caused by dyspnea of a user. Furthermore, the quality detection and analysis of the filled compressed air for respiratory protection is an important support for the protection of users and the development of the national respiratory protection field.
At present, compressed air quality detection devices circulating in domestic markets are roughly divided into two types:
Firstly, on the basis of GB/T31975-2015 standard of compressed air technical requirement for respiratory protection, the measurement of oxygen content, carbon monoxide content and carbon dioxide content is completed by a paramagnetic analyzer and a non-spectroscopic infrared gas analyzer, the measurement of oil mist and particulate matters is completed by a filter membrane weighing method, and the measurement of dew point is completed by a dew point meter;
Secondly, based on European Union standards, detecting devices produced and developed by using Mei Saian, horniweil, delge and other foreign brands adopt a glass test tube ventilation test and artificial reading judgment mode; the carbon monoxide content, the carbon dioxide content, the oil mist content and the water content (side reaction dew point, which needs artificial conversion) can be measured simultaneously; the advantages are portability, the disadvantage is that the glass test tube can not carry out magnitude tracing, the accuracy is low, the European standard is slightly different from the national standard of our country, and the popularization in China is obviously unsuitable.
The two compressed air quality detection devices have no integration, are inconvenient for automatic data acquisition, generate test reports and machine test reports, and the domestic traditional test device has the problem that the device cannot be used due to power supply and outage of a power supply, so that the compressed air quality comprehensive analysis device for respiratory protection is provided to solve the technical problems.
Disclosure of utility model
Aiming at the problems that the compressed air quality detection device in the prior art does not have integration, is inconvenient for automatically collecting data, generating a test report and performing mechanical test report, and the domestic traditional test device has the problems that the power supply is required to supply power and the compressed air cannot be used in power failure, and the like, the utility model provides the compressed air quality comprehensive analysis device for respiratory protection. The specific technical scheme is as follows:
The compressed air quality comprehensive analysis device for respiratory protection comprises an explosion-proof box body, wherein an integrated power supply, an integrated sensor, a flowmeter, a pressure reducer and a gas slow flow device are fixedly arranged at the bottom of an inner cavity of the explosion-proof box body, and the integrated sensor, the flowmeter, the pressure reducer and the gas slow flow device are electrically connected with the integrated power supply;
The opening of the explosion-proof box body is fixedly provided with a cover plate, the upper surface of the cover plate is provided with an air inlet connecting end and an air outlet, the air inlet connecting end, the pressure reducer, the flowmeter and the integrated sensor are connected through an air duct in sequence, the integrated sensor, the air slow-flow device and the air outlet are connected through the air duct in sequence,
The upper surface of the cover plate is embedded with a touch screen, the touch screen is electrically connected with the integrated sensor and the integrated power supply, and the touch screen is in wireless connection with an external mobile phone APP;
The inner chamber bottom fixed mounting of explosion-proof box has convenient to detach's printer, the upper surface of apron is run through on the top of printer, and printer and touch-control screen, integrated power supply electric connection.
In the above technical scheme, the upper surface of the cover plate is provided with the USB interface, and the USB interface is electrically connected with the touch screen.
In the above technical scheme, the upper surface of apron is provided with the mouth that charges, electric connection between mouth and the integrated power supply charge.
In the above technical scheme, opening and slide way mouth have been seted up to the upper surface of apron, the inner chamber bottom fixed mounting of explosion-proof box has U type base, the left surface symmetry of U type base runs through and installs the slide bar, two fixed mounting has splint between the right surface of slide bar, fixed mounting has extrusion spring between the inside wall of the left surface of splint and U type base, the lower extreme centre gripping of printer is between splint and the inside wall of U type base, slidable mounting has the slider in the slide way mouth, fixed mounting has the stay cord between slider and the splint, the stay cord is the state of tightening.
In the above technical scheme, the slide way is all offered in the surface of splint and the left and right sides surface of U type base, and the left side the inner chamber upper wall of slide way and the lower surface of apron all fixed mounting have the leading wheel, the stay cord passes two the leading wheel.
In the above technical scheme, three slidable mounting has the board of lifting between the slide, set up flutedly in the U type base, fixed mounting has the jacking spring in the recess, the top of jacking spring and the lower surface fixed connection of lifting the board, the upper surface of lifting the board and the laminating of the lower surface of printer.
In the technical scheme, the elasticity of the jacking spring is smaller than that of the extrusion spring.
Compared with the prior art, the compressed air quality comprehensive analysis device for respiratory protection has the beneficial effects that:
1. According to the utility model, by arranging the integrated sensor, the storage battery, the touch screen, the printer and the charging port, various contents of compressed air can be checked by using the integrated sensor, data can be displayed on the touch screen for viewing, the detection data can be printed by using the printer to be convenient for making a detection report, and the storage battery can be charged and cruises by using the charging port, so that the whole analysis device can be powered by using the storage battery under the condition of no indoor current, the compressed air can be conveniently detected in a field-free state, the integration and the intellectualization are realized, and the comprehensive measurement of the quality of the compressed air for respiratory protection can be realized by adopting the automatic control of the touch screen of the industrial personal computer.
2. According to the utility model, the touch screen is connected with the external mobile phone APP in a wireless way, after the detected data signals are transmitted into the touch screen by the integrated sensor, the screen can display the test data of each index in real time, and the external mobile phone APP background can display the test data in real time, so that the background is convenient to monitor the quality of compressed air.
3. According to the utility model, the U-shaped base, the clamping plate, the extrusion spring, the pull rope, the sliding block, the jacking spring and the lifting plate are arranged, the sliding block can be utilized to drag the pull rope leftwards to move the clamping plate leftwards to release the fixation of the printer, then the printer can move upwards by means of the jacking spring and the lifting plate, and the top end of the printer can be moved out of the through hole, so that the printer can be disassembled for overhauling and maintenance or printing paper can be added.
Drawings
Fig. 1 is a schematic diagram of a front view structure of the present utility model.
Fig. 2 is a schematic diagram of an explosive structure according to the present utility model.
Fig. 3 is a schematic top view of the present utility model.
Fig. 4 is a schematic cross-sectional structure of the present utility model.
Fig. 5 is a diagram showing the connection relation of the electrical components of the present utility model.
In fig. 1-5, wherein: the anti-explosion box comprises a 1-explosion-proof box body, a 11-integrated power supply, a 12-integrated sensor 12, a 13-flowmeter, a 14-pressure reducer, a 15-gas slow flow device, a 16-printer, a 2-cover plate, a 21-touch screen, a 22-through port, a 23-gas inlet connecting end, a 24-gas outlet, a 25-slide port, a 26-charging port, a 27-USB interface, a 28-power switch, a 3-U-shaped base, a 31-slide bar, a 32-clamping plate, a 33-extrusion spring, a 34-pull rope, a 35-guide wheel, a 36-slide block, a 37-slide rail, a 371-lifting plate, a 38-groove and 381-lifting spring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides a technical solution:
The utility model provides a compressed air quality comprehensive analysis device for respiratory protection, including explosion-proof box 1, explosion-proof box 1's inner chamber bottom fixed mounting has integrated power 11, integrated sensor 12, flowmeter 13, pressure reducer 14, gaseous slow flow device 15 all with integrated power 11 electric connection, explosion-proof box 1's opening part fixed mounting has apron 2, the upper surface of apron 2 installs air inlet link 23 and gas outlet 24, air inlet link 23, pressure reducer 14, flowmeter 13 and integrated sensor 12 are connected through the air duct in proper order between, integrated sensor 12, gaseous slow flow device 15 and gas outlet 24 are connected through the air duct in proper order between, touch screen 21 is installed in the upper surface embedding of apron 2 (touch screen 21 is the industrial computer touch screen), electric connection between touch screen 21 and integrated sensor 12 and integrated power 11; the touch screen 21 is in wireless connection with an external mobile phone APP, the printer 16 which is convenient to detach is fixedly arranged at the bottom of the inner cavity of the explosion-proof box body 1, the top end of the printer 16 penetrates through the upper surface of the cover plate 2, the printer 16 is electrically connected with the touch screen 21 and the integrated power supply 11, the USB interface 27 is arranged on the upper surface of the cover plate 2, the USB interface 27 is electrically connected with the touch screen 21, and external computer equipment can be preprogrammed by connecting the USB interface 27 with the touch screen 21, so that the whole device can automatically control other electronic elements in the device by utilizing the touch screen 21;
When the air conditioner is used, the compressed air bottle is connected with the air inlet connecting end 23 through the air pipe, then the valve of the compressed air bottle is opened, as shown in fig. 5, compressed air enters from the air inlet connecting end 23 and is decompressed through the pressure reducer 14, is metered through the flowmeter 13, then enters into the integrated sensor 12 for integrated detection, detected content data are transmitted to the touch screen 21 for display, the data can be printed out through the printer 16, the touch screen 21 can be connected with external computer equipment through the USB interface for data extraction, the data can be checked after the external mobile phone APP is used, and the detected compressed air is finally discharged from the air outlet 24 through the air slow flow device 15.
It should be noted that, as shown in fig. 3, a charging port 26 is disposed on the upper surface of the cover plate 2, the charging port 26 is electrically connected with the integrated power supply 11, and the integrated power supply 11 can be charged by an external charger connected with the integrated power supply 11 through the charging port 26, and the integrated power supply 11 can continuously operate for several hours after charging, so that the device can also normally operate in some fields without power supply.
In addition, as shown in fig. 2 and 4, the upper surface of the cover plate 2 is provided with the through hole 22 and the slide way hole 25, the bottom of the inner cavity of the explosion-proof box body 1 is fixedly provided with the U-shaped base 3, the left surface of the U-shaped base 3 is symmetrically and penetratingly provided with the slide bars 31, the clamping plate 32 is fixedly arranged between the right surfaces of the two slide bars 31, the slide bars 31 play a role of directional movement on the clamping plate 32, the extrusion spring 33 is fixedly arranged between the left surface of the clamping plate 32 and the inner side wall of the U-shaped base 3, the extrusion spring 33 presses the clamping plate 32, so that the lower end of the printer 16 is clamped between the clamping plate 32 and the inner side wall of the U-shaped base 3, the slide way hole 25 is internally provided with the slide block 36, the pull rope 34 is fixedly arranged between the slide block 36 and the clamping plate 32, the pull rope is in a tight state, the left side pushing the slide block 36 can drive the clamping plate 32 to move leftwards by using the pull rope 34 to release the clamping of the clamping plate 16, and the whole arrangement can be convenient for the printer 16 to be quickly fixed or released.
In order to facilitate the sliding block 36 to move by using the pull rope 34 and the clamping plate 32, a slideway 37 is arranged on the outer surface of the clamping plate 32 and the left and right surfaces of the U-shaped base 3 in a penetrating way, guide wheels 35 are fixedly arranged on the upper wall of the inner cavity of the left slideway 37 and the lower surface of the cover plate 2, and after the pull rope 34 passes through the two guide wheels 35, the moving direction of the pull rope 34 can be changed by using the two guide wheels 35, so that the sliding block 36 is pushed to move in a more labor-saving way.
In addition, in order to facilitate the removal of the printer 16 from the fixing, the top end of the printer 16 can protrude from the through hole 22 for removal, as shown in fig. 4, a lifting plate 371 is slidably mounted between the three slide ways 37, a groove 38 is formed in the u-shaped base 3, a lifting spring 381 is fixedly mounted in the groove 38, the elastic force of the lifting spring 381 is smaller than that of the pressing spring 33, the top end of the lifting spring 381 is fixedly connected with the lower surface of the lifting plate 371, the upper surface of the lifting plate 371 is attached to the lower surface of the printer 16, and after the printer 16 is in contact and fixing, the lifting spring 381 naturally stretches to drive the lifting plate 371 to move upwards, so that the top end of the printer 16 is lifted out of the through hole 22 for removal.
Claims (7)
1. The compressed air quality comprehensive analysis device for respiratory protection comprises an explosion-proof box body (1), and is characterized in that an integrated power supply (11), an integrated sensor (12), a flowmeter (13), a pressure reducer (14) and a gas slow flow device (15) are fixedly arranged at the bottom of an inner cavity of the explosion-proof box body (1), and the integrated sensor (12), the flowmeter (13), the pressure reducer (14) and the gas slow flow device (15) are electrically connected with the integrated power supply (11);
The opening part of the explosion-proof box body (1) is fixedly provided with a cover plate (2), the upper surface of the cover plate (2) is provided with an air inlet connecting end (23) and an air outlet (24), the air inlet connecting end (23), the pressure reducer (14), the flowmeter (13) and the integrated sensor (12) are connected through an air duct in sequence, the integrated sensor (12), the air slow flow device (15) and the air outlet (24) are connected through the air duct in sequence,
The upper surface of the cover plate (2) is embedded with a touch screen (21), the touch screen (21) is electrically connected with the integrated sensor (12) and the integrated power supply (11), and the touch screen (21) is in wireless connection with an external mobile phone APP;
The printer (16) convenient to detach is fixedly installed at the bottom of the inner cavity of the explosion-proof box body (1), the top end of the printer (16) penetrates through the upper surface of the cover plate (2), and the printer (16) is electrically connected with the touch screen (21) and the integrated power supply (11).
2. The compressed air quality comprehensive analysis device for respiratory protection according to claim 1, wherein a USB interface (27) is mounted on the upper surface of the cover plate (2), and the USB interface (27) is electrically connected with the touch screen (21).
3. The compressed air quality comprehensive analysis device for respiratory protection according to claim 1, wherein a charging port (26) is arranged on the upper surface of the cover plate (2), and the charging port (26) is electrically connected with the integrated power supply (11).
4. The comprehensive analysis device for the quality of compressed air for respiratory protection according to claim 1, wherein the upper surface of the cover plate (2) is provided with a through hole (22) and a slideway hole (25);
The anti-explosion box comprises an anti-explosion box body (1), wherein a U-shaped base (3) is fixedly arranged at the bottom of an inner cavity of the anti-explosion box body (1), sliding rods (31) are symmetrically arranged on the left surface of the U-shaped base (3) in a penetrating mode, clamping plates (32) are fixedly arranged between the right surfaces of the sliding rods (31), an extrusion spring (33) is fixedly arranged between the left surface of each clamping plate (32) and the inner side wall of the U-shaped base (3), the lower end of a printer (16) is clamped between the clamping plates (32) and the inner side wall of the U-shaped base (3), sliding blocks (36) are arranged in sliding grooves (25), and pull ropes (34) are fixedly arranged between the sliding blocks (36) and the clamping plates (32) and are in a tightening state.
5. The comprehensive analysis device for the quality of compressed air for respiratory protection according to claim 4, wherein a slide way (37) is arranged on the outer surface of the clamping plate (32) and the left and right surfaces of the U-shaped base (3) in a penetrating manner, guide wheels (35) are fixedly arranged on the upper wall of an inner cavity of the slide way (37) on the left side and the lower surface of the cover plate (2), and the pull ropes (34) penetrate through the two guide wheels (35).
6. The comprehensive analysis device for the quality of compressed air for respiratory protection according to claim 5, wherein a lifting plate (371) is slidably installed between the three slide ways (37), a groove (38) is formed in the U-shaped base (3), a lifting spring (381) is fixedly installed in the groove (38), the top end of the lifting spring (381) is fixedly connected with the lower surface of the lifting plate (371), and the upper surface of the lifting plate (371) is attached to the lower surface of the printer (16).
7. The compressed air quality analysis apparatus for respiratory protection according to claim 6, wherein the elastic force of the lift spring (381) is smaller than the elastic force of the pressing spring (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322566105.0U CN221007488U (en) | 2023-09-21 | 2023-09-21 | Compressed air quality comprehensive analysis device for respiratory protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322566105.0U CN221007488U (en) | 2023-09-21 | 2023-09-21 | Compressed air quality comprehensive analysis device for respiratory protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221007488U true CN221007488U (en) | 2024-05-24 |
Family
ID=91088002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322566105.0U Active CN221007488U (en) | 2023-09-21 | 2023-09-21 | Compressed air quality comprehensive analysis device for respiratory protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221007488U (en) |
-
2023
- 2023-09-21 CN CN202322566105.0U patent/CN221007488U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN221007488U (en) | Compressed air quality comprehensive analysis device for respiratory protection | |
| CN207649856U (en) | A kind of fuel cell bipolar plate tightness detection device | |
| CN106516925A (en) | Elevator balance coefficient detector | |
| CN209784287U (en) | Device for measuring carbon monoxide generation rate in closed space under coal normal temperature condition | |
| CN206348251U (en) | A kind of device for detecting lead accumulator with AGM dividing plates pressurization rate of liquid aspiration | |
| CN201051027Y (en) | Tube penetration and pull measurement device | |
| CN205642935U (en) | Atmosphere dust sampler | |
| CN210181032U (en) | Shale desorption gas real-time monitoring device | |
| CN205245984U (en) | Lift gauge automatic checkout device | |
| CN216817572U (en) | Calibrating device for gas alarm | |
| CN203370209U (en) | Portable positive-pressure-type oxygen respirator detector | |
| CN214224552U (en) | Automatic measuring device for mechanical strength test of power transformer | |
| CN201819760U (en) | Hand-held locomotive pantograph contact pressure detector | |
| CN209525368U (en) | A kind of soft package lithium battery inner walkway machine | |
| CN113008541A (en) | Automatic measuring device and method for mechanical strength test of power transformer | |
| CN209559711U (en) | Dust concentration measuring device and dust concentration measuring kit | |
| CN207610951U (en) | A kind of interactive mode Atmospheric particulates sampling processing device | |
| CN211784524U (en) | Multifunctional smoke dust sampling pipe | |
| CN213778962U (en) | Semi-automatic equipment for testing thickness size of head of soft package battery | |
| CN215893881U (en) | Device for testing furnace pressure and oxygen content of atmosphere furnace by using high-nickel anode material | |
| CN220854051U (en) | Device for detecting waterproof performance of instrument | |
| CN208488529U (en) | A kind of lead storage battery automatic measurement voltage device | |
| CN216593956U (en) | Air pressure measuring device and mining air pressure tester adopting same | |
| CN213875615U (en) | Gas sampling detection device for environment detection | |
| CN215492497U (en) | A circulation testing arrangement for evaluating industry gas cleaning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |