CN111289308A - Coalbed methane sampling device for coalbed methane comprehensive exploration - Google Patents
Coalbed methane sampling device for coalbed methane comprehensive exploration Download PDFInfo
- Publication number
- CN111289308A CN111289308A CN202010144633.5A CN202010144633A CN111289308A CN 111289308 A CN111289308 A CN 111289308A CN 202010144633 A CN202010144633 A CN 202010144633A CN 111289308 A CN111289308 A CN 111289308A
- Authority
- CN
- China
- Prior art keywords
- coal bed
- gas
- fixed
- electric telescopic
- coalbed methane
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2294—Sampling soil gases or the like
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Soil Sciences (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of coal bed gas sampling, and discloses a coal bed gas sampling device for coal bed gas comprehensive exploration, which comprises: fixed safety cover, be equipped with a plurality of bleeder vents on the fixed safety cover, fixed safety cover internal fixation is equipped with air exhaust device, air exhaust device is including taking out the gas pitcher, be equipped with sealed lid on the upper end opening of gas pitcher, the lower extreme of taking out the gas pitcher is equipped with the admission nozzle, the admission nozzle is equipped with the admission valve, be equipped with the piston in the gas pitcher, the top and electric telescopic handle's the flexible end fixed connection of sealed lid and fixed safety cover are passed in proper order to the upper end of piston rod, electric telescopic handle's stiff end is fixed on the support, fixed safety cover passes through many head rods and support fixed connection, still include control system and portable power source, electric telescopic handle and admission valve respectively with control system electric signal connection, this kind of coal bed gas is coalbed gas sampling device for comprehensive investigation.
Description
Technical Field
The invention relates to the technical field of coal bed gas sampling, in particular to a coal bed gas sampling device for coal bed gas comprehensive exploration.
Background
The coal bed gas is hydrocarbon gas which is stored in a coal bed, takes methane as a main component, is adsorbed on the surface of coal matrix particles as a main component, is partially dissociated in coal pores or dissolved in coal bed water, is an associated mineral resource of coal, belongs to unconventional natural gas, and is a clean and high-quality energy and chemical raw material which is grown internationally in nearly twenty years. The calorific value is 2-5 times of that of general coal, the calorific value of 1 cubic meter of pure coal bed gas is equivalent to 1.13kg of gasoline and 1.21kg of standard coal, the calorific value of the coal bed gas is equivalent to natural gas, the coal bed gas can be mixed with the natural gas for transportation and use, the coal bed gas is clean after combustion, almost no waste gas is generated, the coal bed gas is superior industrial, chemical, power generation and resident life fuel, the coal bed gas has the effect of killing multiple birds, the clean energy is provided, and the commercial coal bed gas can generate huge economic benefits.
Before the coal bed gas is exploited, the coal bed gas needs to be sampled and analyzed, and the existing sampling device is basically used for storing the coal bed gas, cannot automatically extract and discharge the coal bed gas and is inconvenient to use.
Disclosure of Invention
The invention provides a coal bed gas sampling device for coal bed gas comprehensive exploration, which can automatically extract and discharge coal bed gas, is convenient for sampling and analyzing the coal bed gas and is convenient to use.
The invention provides a coal bed gas sampling device for coal bed gas comprehensive exploration, which comprises: fixed safety cover, be equipped with a plurality of bleeder vents on the fixed safety cover, fixed safety cover internal fixation is equipped with air exhaust device, air exhaust device is including taking out the gas pitcher, be equipped with sealed lid on the upper end opening of gas pitcher, the lower extreme of taking out the gas pitcher is equipped with the admission nozzle, be equipped with the admission valve on the admission nozzle, be equipped with the piston in the gas pitcher, be equipped with the piston rod on the piston, the top and the telescopic end fixed connection of electric telescopic handle of sealed lid and fixed safety cover are passed in proper order to the upper end of piston rod, electric telescopic handle's stiff end is fixed on the support, fixed safety cover passes through many head rods and support fixed connection, still include control system and portable power source, control system and portable power source are fixed to be set up on the.
The lower extreme of gas suction tank still is equipped with the exhaust and chews, be equipped with first discharge valve on the exhaust is chewed, the lower extreme of blast pipe is chewed in the exhaust, still include the aspiration pump, the upper end of blast pipe passes fixed safety cover and support in proper order and is connected with the intake of aspiration pump, be equipped with second discharge valve on the outlet nozzle of aspiration pump, the outlet duct is chewed in the outlet of aspiration pump, the outlet duct can be dismantled with gaseous sample bag and be connected, portable power source is connected to first discharge valve, first discharge valve and control system signal connection, power is connected respectively to aspiration pump and second discharge valve, aspiration pump and second discharge valve respectively with control system signal connection.
The bracket is provided with a safety hanging buckle.
And the lifting device drives the support to move up and down.
The lifting device comprises a driving motor, a rotating shaft and a steel wire rope, an output shaft of the driving motor is fixedly connected with the rotating shaft through a coupler, one end of the steel wire rope is fixed on the rotating shaft, the other end of the steel wire rope is provided with a hanging ring, the hanging ring is detachably connected with the safety hanging buckle, and the driving motor is connected with a power supply.
The hoop is circumferentially arranged on the outer side face of the air pumping tank and fixedly connected with the inner side face of the fixed protective cover through at least two second connecting rods.
The upper end of the piston rod and the telescopic end of the electric telescopic rod are respectively fixedly provided with a flange, and the upper end of the piston rod is fixedly connected with the telescopic end of the electric telescopic rod through the flanges.
The electric telescopic rod, the air inlet valve, the first exhaust valve, the air extracting pump, the second exhaust valve, the mobile power supply and the control system are all explosion-proof devices.
Compared with the prior art, the invention has the beneficial effects that:
the control system controls the electric telescopic rod to extend and shorten, so that the piston rod drives the piston to move up and down, the control system controls the air inlet valve to open and close, extraction and discharge of gas are completed, coal bed gas at different depths in an exploration well can be sampled, the coal bed gas can be automatically extracted and discharged, sampling and analysis of the coal bed gas are facilitated, and the use is convenient.
Drawings
Fig. 1 is a schematic structural diagram of a coal bed gas sampling device for coal bed gas comprehensive exploration provided by the invention.
Description of reference numerals:
1-protective cover, 2-air vent, 3-air inlet, 4-air exhaust tank, 5-air inlet valve, 6-second connecting rod, 7-hoop, 8-first exhaust valve, 9-piston, 10-piston rod, 11-sealing cover, 12-sealing shaft sleeve, 13-flange, 14-first connecting rod, 15-electric telescopic rod, 16-exhaust pipe, 17-bracket and 18-safety hanging buckle.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to fig. 1, but it should be understood that the scope of the present invention is not limited by the embodiment.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing technical solutions of the present invention and simplifying the description, but do 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.
As shown in fig. 1, a coalbed methane sampling device for coalbed methane comprehensive exploration provided by an embodiment of the present invention includes: the safety protection device comprises a fixed protection cover 1, a plurality of air holes 2 are arranged on the fixed protection cover 1, an air extractor is fixedly arranged in the fixed protection cover 1 and comprises an air extracting tank 4, a sealing cover 11 is arranged on an upper end opening of the air extracting tank 4, an air inlet nozzle 3 is arranged at the lower end of the air extracting tank 4, an air inlet valve 5 is arranged on the air inlet nozzle 3, a piston 9 is arranged in the air extracting tank 4, a piston rod 10 is arranged on the piston 9, the upper end of the piston rod 10 sequentially penetrates through the sealing cover 11 and the top of the fixed protection cover 1 to be fixedly connected with a telescopic end of an electric telescopic rod 15, the fixed end of the electric telescopic rod 15 is fixed on a support 17, the fixed protection cover 1 is fixedly connected with the support 17 through a plurality of first connecting rods, the air inlet valve 5 and the control system are respectively connected with a mobile power supply, and the electric telescopic rod 15 and the air inlet valve 5 are respectively connected with the control system through electric signals.
The use method and the working principle are as follows:
the initial state is as follows: the control system controls the air inlet valve 5 to be opened, the control system controls the electric telescopic rod 15 to extend, so that the piston 9 is positioned at the bottom in the air pumping tank 4, gas in the air pumping tank 4 is discharged, no gas exists in the air pumping tank 4, the control system controls the air inlet valve 5 to be closed, the whole device is placed in a surveying well, after the specified depth is reached, the control system starts the air inlet valve 5 to be opened, then the electric telescopic rod 15 is started to contract, under the action of negative pressure, coal bed gas enters the fixed protective cover 1 from the air holes 2, then enters the air pumping tank 4 through the air inlet nozzle 3 and the air inlet valve 5, after the set time is reached, the control system controls the air inlet valve 5 to be closed, then the control system controls the electric telescopic rod 15 to stop contracting, the device is taken out of the surveying well, is in sealed connection with the gas collecting bag through, then control system control electric telescopic handle 15 extension, electric telescopic handle 15 drives piston rod 10 and drives piston 9 and extrudes the gas in bleeding jar 4, extrudees into the gas collection bag with the gas, accomplishes the sample to coal bed gas.
The fixed protective cover 1 prevents the device from colliding with the well wall in the process of entering an exploration well to cause damage to the gas pumping tank 4 or the gas inlet nozzle 3. The air holes 2 are provided with filter screens to prevent fine particles from entering the air inlet nozzle 3 through the air holes 2.
Be equipped with sealed axle sleeve 12 between piston rod 10 and the sealed lid 11, sealed lid 11 is connected through screw thread and sealing washer and the upper end opening thread sealing of jar 4 of bleeding, avoids the edge gas leakage of piston, avoids coal bed gas to spill over between axle sleeve and sealed lid 11 to and sealed lid 11 and the jar 4 of bleeding.
The control system controls the electric telescopic rod 15 to stretch and retract, so that the piston 9 is driven to move up and down, the gas is extracted and discharged, and the coal bed gas is conveniently analyzed.
In order to promote the efficiency of coal bed gas sample, the lower extreme of gas suction tank 4 still is equipped with the exhaust and chews, be equipped with first discharge valve 8 on the exhaust is chewed, the lower extreme of connecting blast pipe 16 is chewed in the exhaust, still include the aspiration pump, the upper end of blast pipe 16 passes fixed safety cover 1 and support 17 in proper order and chews with the admitting air of aspiration pump and be connected, be equipped with second discharge valve on the giving vent to anger of aspiration pump, the outlet duct is chewed in the giving vent to anger of aspiration pump, the outlet duct can be dismantled with gaseous sample bag and be connected, portable power source is connected to first discharge valve 8, first discharge valve 8 and control system signal connection, power is connected respectively to aspiration pump and second discharge valve, aspiration.
The suction pump is located on the ground and uses an existing suction pump, which is not shown in the drawings.
Different from the above embodiment, to a degree of depth sample completion back, need not take out the device from the reconnaissance well, open first exhaust valve 8 through control system, make electric telescopic handle 15 begin to extend again, electric telescopic handle 15 drives piston 9 through piston rod 10 and extrudees the gas of pumping in the gas pitcher 4, electric telescopic handle 15 stops the extension when piston 9 reaches the bottom in the gas pitcher 4, coal bed gas is chewed from the exhaust and is passed through first exhaust valve 8 and blast pipe 16, under the effect of air suction pump, take out the gas in gas pitcher 4 and the blast pipe 16 and take out corresponding gas collection bag, then rise the device to next appointed degree of depth, the coal bed gas sample of the appointed degree of depth is extracted again.
The bracket 17 is provided with a safety hanging buckle 18, the safety hanging buckle 18 is convenient for connecting the bracket 17, and the bracket 17 is lifted.
And the lifting device drives the bracket 17 to move up and down.
The lifting device comprises a driving motor, a rotating shaft and a steel wire rope, an output shaft of the driving motor is fixedly connected with the rotating shaft through a coupler, one end of the steel wire rope is fixed on the rotating shaft, the steel wire rope is wound on the rotating shaft, a hanging ring is arranged at the other end of the steel wire rope, the hanging ring is detachably connected with the safety hanging buckle 18, and the driving motor is connected with a power supply.
The hoop 7 is circumferentially arranged on the outer side face of the air pumping tank 4, the hoop 7 is fixedly connected with the inner side face of the fixed protective cover 1 through at least two second connecting rods 6, and the air pumping tank 4 is ensured to be vertically stably connected with the fixed protective cover 1 through the hoop 7 and the at least two second connecting rods 6.
The upper end of the piston rod 10 and the telescopic end of the electric telescopic rod 15 are respectively and fixedly provided with a flange 13, and the upper end of the piston rod 10 is fixedly connected with the telescopic end of the electric telescopic rod 15 through the flange 13.
The electric telescopic rod 15, the air inlet valve 5, the first exhaust valve 8, the air extracting pump, the second exhaust valve, the mobile power supply and the control system are all anti-explosion devices, and the anti-explosion devices can avoid gas explosion.
According to the invention, the control system is used for controlling the extension and the shortening of the electric telescopic rod, the electric telescopic rod drives the piston to move up and down through the piston rod, and meanwhile, the control system is used for controlling the opening and closing of the air inlet valve, so that the extraction and the discharge of gas are completed, the coal bed gas at different depths in an exploration well can be sampled, the coal bed gas can be automatically extracted and discharged, the sampling analysis of the coal bed gas is convenient, and the use is convenient.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (8)
1. The utility model provides a coalbed methane sampling device for coalbed methane comprehensive investigation which characterized in that includes: the safety protection device comprises a fixed protection cover (1), a plurality of air holes (2) are formed in the fixed protection cover (1), an air extracting device is fixedly arranged in the fixed protection cover (1), the air extracting device comprises an air extracting tank (4), a sealing cover (11) is arranged on an upper end opening of the air extracting tank (4), an air inlet nozzle (3) is arranged at the lower end of the air extracting tank (4), an air inlet valve (5) is arranged on the air inlet nozzle (3), a piston (9) is arranged in the air extracting tank (4), a piston rod (10) is arranged on the piston (9), the upper end of the piston rod (10) sequentially penetrates through the sealing cover (11) and the top of the fixed protection cover (1) to be fixedly connected with the telescopic end of an electric telescopic rod (15), the fixed end of the electric telescopic rod (15) is fixed on a support (17), the fixed protection cover (1, control system and portable power source are fixed to be set up on support (17), and portable power source is connected respectively to electric telescopic handle (15), admission valve (5), and electric telescopic handle (15) and admission valve (5) are connected with the control system signal of telecommunication respectively.
2. The coal bed gas sampling device for coal bed gas comprehensive exploration according to claim 1, wherein an exhaust nozzle is further arranged at the lower end of the gas pumping tank (4), a first exhaust valve (8) is arranged on the exhaust nozzle, the exhaust nozzle is connected with the lower end of the exhaust pipe (16), the device further comprises a gas pumping pump, the upper end of the exhaust pipe (16) sequentially penetrates through the fixed protective cover (1) and the support (17) to be connected with an inlet nozzle of the gas pumping pump, a second exhaust valve is arranged on the outlet nozzle of the gas pumping pump, the outlet nozzle of the gas pumping pump is connected with the outlet pipe, the outlet pipe is detachably connected with the gas sample bag, the first exhaust valve (8) is connected with a mobile power supply, the first exhaust valve (8) is in signal connection with a control system, the gas pumping pump and the second exhaust valve are respectively connected with a power supply, and the.
3. The coalbed methane sampling device for coalbed methane comprehensive exploration according to claim 1, characterized in that a safety hanging buckle (18) is arranged on the bracket (17).
4. The coalbed methane sampling device for coalbed methane comprehensive exploration according to claim 3, further comprising a lifting device for driving the bracket (17) to move up and down.
5. The coalbed methane sampling device for coalbed methane comprehensive exploration according to claim 4, wherein the lifting device comprises a driving motor, a rotating shaft and a steel wire rope, an output shaft of the driving motor is fixedly connected with the rotating shaft through a coupler, one end of the steel wire rope is fixed on the rotating shaft, the steel wire rope is wound on the rotating shaft, the other end of the steel wire rope is provided with a hanging ring, the hanging ring is detachably connected with the safety hanging buckle (18), and the driving motor is connected with a power supply.
6. The coal bed gas sampling device for the comprehensive exploration of the coal bed gas as claimed in claim 1, wherein an anchor ear (7) is circumferentially arranged on the outer side surface of the gas pumping tank (4), and the anchor ear (7) is fixedly connected with the inner side surface of the fixed protective cover (1) through at least two second connecting rods (6).
7. The coal bed gas sampling device for the comprehensive exploration of the coal bed gas as claimed in claim 1, wherein a flange (13) is fixedly arranged at the upper end of the piston rod (10) and the telescopic end of the electric telescopic rod (15) respectively, and the upper end of the piston rod (10) is fixedly connected with the telescopic end of the electric telescopic rod (15) through the flange (13).
8. The coalbed methane sampling device for coalbed methane comprehensive exploration according to claim 2, wherein the electric telescopic rod (15), the air inlet valve (5), the first exhaust valve (8), the air suction pump, the second exhaust valve, the mobile power supply and the control system are all explosion-proof devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010144633.5A CN111289308B (en) | 2020-03-04 | 2020-03-04 | Coalbed methane sampling device for coalbed methane comprehensive exploration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010144633.5A CN111289308B (en) | 2020-03-04 | 2020-03-04 | Coalbed methane sampling device for coalbed methane comprehensive exploration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111289308A true CN111289308A (en) | 2020-06-16 |
| CN111289308B CN111289308B (en) | 2021-05-07 |
Family
ID=71031126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010144633.5A Active CN111289308B (en) | 2020-03-04 | 2020-03-04 | Coalbed methane sampling device for coalbed methane comprehensive exploration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111289308B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624573A (en) * | 2021-08-25 | 2021-11-09 | 新疆大学 | Deep coal bed gas exploitation sampling device |
| CN117309496A (en) * | 2023-10-28 | 2023-12-29 | 河海大学 | River sediment sampling monitoring equipment |
| CN117367897A (en) * | 2023-10-18 | 2024-01-09 | 南通仁隆科研仪器有限公司 | Self-sealing type coalbed methane sampling device |
| CN117517013A (en) * | 2024-01-04 | 2024-02-06 | 德州市德城区冠宏机电设备有限公司 | Building survey and drawing foundation sample collection system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103041A (en) * | 2011-01-10 | 2011-06-22 | 河南理工大学 | On-site sealed sampling device for coal bed gas |
| CN208076237U (en) * | 2018-03-15 | 2018-11-09 | 天津市环境保护科学研究院 | A kind of underground intelligent gas sampling robot |
| CN110286003A (en) * | 2019-06-27 | 2019-09-27 | 中煤科工集团重庆研究院有限公司 | A kind of coal seam group joint mash gas extraction gas mixed sourced proportion quantitatively determines method |
| CN209977704U (en) * | 2019-06-19 | 2020-01-21 | 广州钱柜软件科技有限公司 | Natural gas pipeline with natural gas sampling device |
| CN210051610U (en) * | 2019-05-05 | 2020-02-11 | 成都聚地石油天然气有限责任公司 | Natural gas sampling detection device |
-
2020
- 2020-03-04 CN CN202010144633.5A patent/CN111289308B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103041A (en) * | 2011-01-10 | 2011-06-22 | 河南理工大学 | On-site sealed sampling device for coal bed gas |
| CN208076237U (en) * | 2018-03-15 | 2018-11-09 | 天津市环境保护科学研究院 | A kind of underground intelligent gas sampling robot |
| CN210051610U (en) * | 2019-05-05 | 2020-02-11 | 成都聚地石油天然气有限责任公司 | Natural gas sampling detection device |
| CN209977704U (en) * | 2019-06-19 | 2020-01-21 | 广州钱柜软件科技有限公司 | Natural gas pipeline with natural gas sampling device |
| CN110286003A (en) * | 2019-06-27 | 2019-09-27 | 中煤科工集团重庆研究院有限公司 | A kind of coal seam group joint mash gas extraction gas mixed sourced proportion quantitatively determines method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624573A (en) * | 2021-08-25 | 2021-11-09 | 新疆大学 | Deep coal bed gas exploitation sampling device |
| CN117367897A (en) * | 2023-10-18 | 2024-01-09 | 南通仁隆科研仪器有限公司 | Self-sealing type coalbed methane sampling device |
| CN117309496A (en) * | 2023-10-28 | 2023-12-29 | 河海大学 | River sediment sampling monitoring equipment |
| CN117309496B (en) * | 2023-10-28 | 2024-03-01 | 河海大学 | River sediment sampling monitoring equipment |
| CN117517013A (en) * | 2024-01-04 | 2024-02-06 | 德州市德城区冠宏机电设备有限公司 | Building survey and drawing foundation sample collection system |
| CN117517013B (en) * | 2024-01-04 | 2024-03-26 | 德州市德城区冠宏机电设备有限公司 | Building survey and drawing foundation sample collection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111289308B (en) | 2021-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111289308B (en) | Coalbed methane sampling device for coalbed methane comprehensive exploration | |
| CN208372574U (en) | Pulp concentration device | |
| CN110080756A (en) | A kind of dedicated well-flushing sampling pump of Techniques of Underground Water Environment Monitoring Well and well-flushing sampling method | |
| CN204275659U (en) | A kind of geologic prospect vacuum water filter | |
| CN210857072U (en) | Leaf cleans processor | |
| CN208805378U (en) | Portable soil detection device | |
| CN218115381U (en) | Safflower seed oil extraction equipment | |
| CN204051163U (en) | A kind of sewage filter device | |
| CN216320053U (en) | High-efficiency high-concentration oxygen generator | |
| CN210953550U (en) | Sampling device for natural gas | |
| CN212228521U (en) | Gas environment acquisition device for remote mobile experiment vehicle | |
| CN207243447U (en) | A kind of vacuum drawing liquid frock | |
| CN201739188U (en) | Machine for pumping and discharging biogas sewage and residue | |
| CN217462225U (en) | Ventilation device for preventing coal mine gas from exceeding limit | |
| CN220976780U (en) | Pig raising septic tank fermentation equipment | |
| CN219495786U (en) | Sampling device for water quality detection | |
| CN215169839U (en) | Mining cinder drill way collection device | |
| CN217103545U (en) | Test equipment for sludge material dehydration performance | |
| CN214115535U (en) | Extraction element for genetic engineering | |
| CN108956200A (en) | Portable soil detection device | |
| CN215312283U (en) | Energy-efficient type alcohols recovery plant | |
| CN201851411U (en) | Air pressure type solvent pumping device | |
| CN203621032U (en) | Security flusher for a fine-diameter pipeline used in laboratories | |
| CN209132029U (en) | A kind of simple deep-well water sample acquisition device | |
| CN218953430U (en) | Diesel generator convenient to clearance oil tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |