CN111855330A - Smoke and dust integration sampling device - Google Patents
Smoke and dust integration sampling device Download PDFInfo
- Publication number
- CN111855330A CN111855330A CN202010774732.1A CN202010774732A CN111855330A CN 111855330 A CN111855330 A CN 111855330A CN 202010774732 A CN202010774732 A CN 202010774732A CN 111855330 A CN111855330 A CN 111855330A
- Authority
- CN
- China
- Prior art keywords
- sampling
- box
- dust
- connection
- smoke
- 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.)
- Withdrawn
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
- G01N1/24—Suction devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of smoke dust sampling, and discloses a smoke dust integrated sampling device which comprises a flue and an electric telescopic rod main body, wherein the bottom surface of the electric telescopic rod main body is in contact with the ground, and the top surface of the output end of the electric telescopic rod main body is fixedly connected with the bottom surface of a fixed column. According to the smoke and dust integrated sampling device, the mouth head is narrow at the bottom and wide at the top, so that smoke and dust cannot be blocked after entering the mouth head, and sampling failure caused by dust blockage of the sampling mouth can be effectively avoided; the sampling device can automatically reach the flue sampling port by using the electric telescopic rod main body, manual lifting is not needed, labor force is reduced, and labor cost is saved; the heating box is used for heating the high-temperature clean air flow for the sampling pipe, so that the high-temperature sampling air flow containing moisture can not generate condensate water due to low temperature of the sampling pipe, the weight of the filtered smoke dust is changed, the sampling result is influenced, and the accuracy and the reliability of the sampling result are ensured.
Description
Technical Field
The invention relates to the technical field of smoke dust sampling, in particular to a smoke dust integrated sampling device.
Background
In the field of environmental monitoring, smoke and dust and flue gas sampling detection is required for fixed pollution sources such as a flue. In the sampling process, because flue site sampling platform's environmental condition is abominable, will be for a long time the manual operation smoke and dust sampling pipe remains motionless, the operation process is very painstaking, and when carrying out the smoke and dust sampling, because of the sampling rifle is longer, the inside high temperature moisture of smoke and dust condenses into the water droplet very easily, when a large amount of water droplets gather in the sampling rifle, part water droplet can carry impurity adhesion to smoke and dust sampling device and strain a section of thick bamboo, it strains a section of thick bamboo to pollute the sampling, and make and strain a section of thick bamboo and wet, lead to the heavy emergence of the smoke and dust sample of gathering in a section of thick bamboo to change, make the sampling result unusual, directly.
Disclosure of Invention
The invention aims to provide an integrated smoke dust sampling device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a smoke and dust integrated sampling device comprises a flue and an electric telescopic rod main body, wherein the bottom surface of the electric telescopic rod main body is in contact with the ground, the top surface of the output end of the electric telescopic rod main body is fixedly connected with the bottom surface of a fixed column, a sampling box and a heat exchange box are arranged on the left side and the right side of the fixed column, the right side surface of the sampling box is fixedly connected with the left side surface of the fixed column, a sampling gun rod is horizontally arranged on the left side of the sampling box, the sampling gun rod is internally and hollow, the right end surface of the sampling gun rod is fixedly connected with the right side surface of the sampling box, the left end of the sampling gun rod penetrates through the flue and extends into the flue, a sampling tube is horizontally arranged in the sampling gun rod, the left end of the sampling tube penetrates through the sampling gun rod and is connected with a sampling nozzle, the sampling box comprises a sampling box body, a supporting ring, a sampling gun rod, a heating box, a sampling gun rod, a heating box, a baffle plate, a heating pipe and a micro-pressure sensor, wherein the inner wall of the sampling box body is fixedly connected with the surface of the supporting ring, the side surface of the sampling box body is vertically provided with the filtering cylinder, the side surface of the filtering cylinder is contacted with the inner wall of the supporting ring, the top end of the sampling gun rod is provided with a connecting cover, the surface of the connecting cover is in threaded connection with the inner wall of the sampling box body, a sealing ring is arranged between the bottom surface of the connecting cover and the top surface of the filtering cylinder, the top surface of the connecting cover is in through connection with an air outlet pipe, the top surface of the sampling gun rod is fixedly connected with the bottom surface of the heating box body, the heating, the micro-pressure sensor left side is provided with the pitot tube, heat transfer case left surface and fixed column right flank fixed connection, the outlet duct other end is from last to running through heat transfer case top surface and heat transfer case right flank down and extending to the heat transfer case right side and being connected with the vacuum pump, vacuum pump left surface fixed mounting is in heat transfer case right flank, receives the trachea other end and heat transfer case top surface through connection.
Preferably, sampling pipe left end through connection has half shroud two, the outer fixed cover of half shroud is equipped with the connection lid, sampling mouth right-hand member through connection has half shroud one, the fixed cover in half shroud outside is equipped with the connecting seat, connecting seat surface and connection cover inner wall threaded connection, the sampling mouth left end is provided with the mouth head, the narrow wide setting of going up under the mouth head, connection cover bottom surface and dead lever top surface fixed connection, dead lever bottom surface and pitot tube top surface fixed connection.
Preferably, a check valve is arranged on the air inlet pipe.
Preferably, the other end of the heating pipe is in through connection with the top surface of the sampling gun rod, the bottom surface of the sampling gun rod is in through connection with an air return pipe, and the other end of the air return pipe is in through connection with the right side surface of the heat exchange box.
Preferably, the air outlet pipe is positioned in the heat exchange box and is spirally arranged.
Preferably, the sampling box is internally provided with a stop ring, the stop ring is narrow at the top and wide at the bottom, the surface of the stop ring is fixedly connected with the inner wall of the sampling box, and the stop ring is provided with four upper and lower parts.
Compared with the prior art, the invention has the beneficial effects that:
1. this smoke and dust integration sampling device through setting up the mouth head to narrow down wide, makes the smoke and dust get into the back and can not block up, can accomplish effectively to avoid the sampling mouth to lead to the sampling work failure because of the dust blocks up.
2. Make sampling device can reach the flue sample connection automatically through using the electric telescopic handle main part, need not artifical the lift, reduce the labour, practice thrift the cost of labor.
3. The heating box is used for heating the high-temperature clean air flow for the sampling pipe, so that the high-temperature sampling air flow containing moisture can not generate condensate water due to low temperature of the sampling pipe, the weight of the filtered smoke dust is changed, the sampling result is influenced, and the accuracy and the reliability of the sampling result are ensured.
4. Through being provided with heat exchange box with the mutual heat transfer of high temperature sampling air current and the clean air current of low temperature, improve the reflux temperature of clean air current, make heating network heating power reduce, increase the resource utilization degree, reach energy-conserving effect.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a sectional view of a sampling tube according to the present invention;
FIG. 3 is a cross-sectional view of a sampling gun barrel and a sampling cartridge of the present invention;
FIG. 4 is a cross-sectional view of a heat exchange box of the present invention;
FIG. 5 is an enlarged view of the area of FIG. 3A according to the present invention;
FIG. 6 is an enlarged view of the area of FIG. 3B according to the present invention.
In the figure: 1 flue, 2 electric telescopic rod main parts, 3 fixed columns, 4 heat exchange boxes, 5 sampling boxes, 6 sampling gun rods, 7 heating boxes, 8 micro-pressure sensors, 9 sampling nozzles, 10 sampling pipes, 11 nozzle heads, 12 half-round cover I, 13 half-round cover II, 14 connecting covers, 15 connecting seats, 16 fixing rods, 17 pitot tubes, 18 air inlet pipes, 19 heating nets, 20 partition plates, 21 air pumps, 22 heating pipes, 23 air receiving pipes, 24 air return pipes, 25 support rings, 26 filter cylinders, 27 connecting covers, 28 sealing rings, 29 blocking rings, 30 air outlet pipes and 31 vacuum pumps.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a smoke and dust integrated sampling device comprises a flue 1 and an electric telescopic rod main body 2, the bottom surface of the electric telescopic rod main body 2 is contacted with the ground, the sampling device can automatically reach a sampling port of the flue 1 by using the electric telescopic rod main body 2, manual lifting is not needed, labor force is reduced, labor cost is saved, the top surface of the output end of the electric telescopic rod main body 2 is fixedly connected with the bottom surface of a fixed column 3, a sampling box 5 and a heat exchange box 4 are arranged on the left side and the right side of the fixed column 3, the right side surface of the sampling box 5 is fixedly connected with the left side surface of the fixed column 3, a sampling gun rod 6 is horizontally arranged on the left side of the sampling box 5, the sampling gun rod 6 is hollow inside, the right end surface of the sampling gun rod 6 is fixedly connected with the right side surface of the sampling box 5, the left end of the sampling gun rod 6 penetrates through the flue 1 and extends, the left end of the sampling tube 10 is connected with a second half-round cover 13 in a run-through manner, the outer part of the second half-round cover 13 is fixedly sleeved with a connecting cover 14, the right end of the sampling nozzle 9 is connected with a first half-round cover 12 in a run-through manner, the outer part of the first half-round cover 12 is fixedly sleeved with a connecting seat 15, the surface of the connecting seat 15 is in threaded connection with the inner wall of the connecting cover 14, the left end of the sampling nozzle 9 is provided with a nozzle head 11, the nozzle head 11 is arranged to be narrow at the bottom and wide at the top, the bottom surface of the connecting cover 14 is fixedly connected with the top surface of a fixed rod 16, the bottom surface of the fixed rod 16 is fixedly connected with the top surface of a pitot tube 17, the integrated smoke dust sampling device can prevent smoke from being blocked after entering, the right end of the sampling nozzle 9 can be effectively prevented from failing in sampling work due to dust blockage, the upper part of a stop ring 29 is narrow and the lower part thereof is wide, the surface of the stop ring 29 is fixedly connected with the inner wall of a sampling box 5, four stop rings 29 are arranged up and down, the inner wall of the sampling box 5 is fixedly connected with the surface of a supporting ring 25, a filtering cylinder 26 is vertically arranged in the sampling box 5, the side surface of the filtering cylinder 26 is contacted with the inner wall of the supporting ring 25, the top end of the sampling box 5 is provided with a connecting cover 27, the surface of the connecting cover 27 is in threaded connection with the inner wall of the sampling box 5, a sealing ring 28 is arranged between the bottom surface of the connecting cover 27 and the top surface of the filtering cylinder 26, the top surface of the connecting cover 27 is in through connection with an air outlet pipe 30, the top surface of a sampling gun rod 6 is fixedly connected with the bottom surface of a heating box 7, a heating net 19 and a baffle plate 20 are horizontally arranged in sequence from top to bottom in, 7 top surfaces of heating cabinet through connection have intake pipe 18 and receipts trachea 23, be provided with the check valve on the intake pipe 18, 7 left surface through connection of heating cabinet has heating pipe 22, the heating pipe 22 other end and 6 top surfaces through connection of sampling barral of a gun, 6 bottom surfaces through connection of sampling barral of a gun have muffler 24, the muffler 24 other end and 4 right sides of heat transfer box through connection, use heating cabinet 7 with high temperature clean air current for sampling pipe 10 heating, make the high temperature sampling air current that contains the moisture can not lead to producing the comdenstion water because of sampling pipe 10 low temperature, make and filter smoke and dust weight and change, influence the sampling result, the accuracy and the reliability of sampling result have been guaranteed, 6 bottom surfaces of sampling barral of a gun and 8 top surfaces fixed connection of minute pressure sensor, 8 left sides are provided with pitot tube 17, 4 left surfaces of heat transfer box and 3 right sides fixed connection of fixed column, the outlet duct 30 other end extends to 4 right sides of heat transfer box from last 4 top surfaces Vacuum pump 31, outlet duct 30 are located the inside spiral setting of heat transfer case 4, and vacuum pump 31 left surface fixed mounting is in the 4 right flank of heat transfer case, receive 23 other ends of trachea and 4 top surfaces through connections of heat transfer case, through being provided with heat transfer case 4 with the mutual heat transfer of high temperature sampling air current and the clean air current of low temperature, improve the reflux temperature of clean air current, make heating network 19 heating power reduce, increase the resource availability, reach energy-conserving effect.
The invention also provides a smoke and dust integrated sampling method, which comprises the following steps:
s1, replacing the new sampling nozzle 9 by rotating the connecting seat 15 and the connecting cover 14; replacement of a new filter cartridge 26 is achieved by rotating the coupling cap 27 and the cartridge 5.
S2, starting the electric telescopic rod main body 2, enabling the fixing column 3 to ascend, enabling the left end of the sampling gun rod 6 to extend into the flue 1, and enabling the nozzle 11 to be arranged in the direction facing the airflow.
S3, opening a one-way valve on the air inlet pipe 18, simultaneously starting the heating net 19 and the air pump 21, enabling the heated clean air flow to be subjected to heating treatment on the sampling pipe 10, enabling the heating temperature of the heating net 19 to be not lower than 180 ℃, starting the vacuum pump 31 to enable the sampling nozzle 9 to start air inlet after keeping heating operation for two minutes, enabling the air exhaust flow of the vacuum pump 31 to be not less than 50L/min and the negative pressure to be not less than-35 kpa, enabling the smoke air flow containing moisture to pass through the sampling pipe 10 with high temperature, then filtering through the filter cylinder 26 in the sampling box 5, enabling the contained dust to be retained in the sampling box 5 through the filter cylinder 26 and the blocking ring 29, and enabling the residual high-temperature air to flow into the heat exchange box 4 through the.
S4, enabling the high-temperature clean air flow heated by the heating net 19 to flow into the sampling gun rod 6 through the heating pipe 22, enabling the cooled low-temperature clean air flow to enter the heat exchange box 4 through the air return pipe 24 to exchange heat with the high-temperature air flow in the air outlet pipe 30, and enabling the cooled low-temperature clean air flow to flow back to the heating box 7 through the air return pipe 23 for recycling.
And S5, after the test is finished, collecting the data of the smoke and the micro-pressure sensor 8 in the sampling box 5 and the accumulated gas production of the vacuum pump 31, and obtaining the average smoke concentration during the test.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a smoke and dust integration sampling device, includes flue (1) and electric telescopic handle main part (2), its characterized in that: electric telescopic handle main part (2) bottom surface and ground contact, electric telescopic handle main part (2) output top surface and fixed column (3) bottom surface fixed connection, the fixed column (3) left and right sides is provided with sampling box (5) and heat transfer case (4), sampling box (5) right flank and fixed column (3) left surface fixed connection, sampling box (5) left side level is provided with sampling gun rod (6), the inside cavity setting of sampling gun rod (6), sampling gun rod (6) right-hand member face and sampling box (5) right flank fixed connection, sampling gun rod (6) left end runs through inside flue (1) extends to flue (1), the inside level of sampling gun rod (6) is provided with sampling tube (10), sampling tube (10) left end runs through sampling gun rod (6) and is connected with sampling nozzle (9), sampling tube (10) right-hand member runs through sampling gun rod (6) and sampling box (5) left surface and sampling box (5) The internal through connection, the top opening of the sampling box (5) is arranged, the inner wall of the sampling box (5) is fixedly connected with the surface of the supporting ring (25), the inside of the sampling box (5) is vertically provided with a filter cylinder (26), the side surface of the filter cylinder (26) is contacted with the inner wall of the supporting ring (25), the top end of the sampling box (5) is provided with a connecting cover (27), the surface of the connecting cover (27) is in threaded connection with the inner wall of the sampling box (5), a sealing ring (28) is arranged between the bottom surface of the connecting cover (27) and the top surface of the filter cylinder (26), the top surface of the connecting cover (27) is in through connection with an air outlet pipe (30), the top surface of the sampling gun rod (6) is fixedly connected with the bottom surface of the heating box (7), the heating net (19) and the partition board (20) are sequentially and horizontally arranged inside the heating box (7) from top to bottom, the side surface of, the bottom surface of the interior of the heating box (7) is fixedly connected with the bottom surface of an air pump (21), the air suction end of the air pump (21) is communicated with the top surface of the partition plate (20), the top surface of the heating box (7) is communicated with an air inlet pipe (18) and an air collection pipe (23), the left side surface of the heating box (7) is communicated with a heating pipe (22), the bottom surface of the sampling gun rod (6) is fixedly connected with the top surface of the micro-pressure sensor (8), the left side of the micro-pressure sensor (8) is provided with a pitot tube (17), the left side surface of the heat exchange box (4) is fixedly connected with the right side surface of the fixed column (3), the other end of the air outlet pipe (30) penetrates through the top surface of the heat exchange box (4) and the right side surface of the heat exchange box (4) from top to bottom to extend to the right side, the other end of the air collecting pipe (23) is communicated with the top surface of the heat exchange box (4).
2. The integrated smoke and dust sampling device according to claim 1, wherein: sampling pipe (10) left end through connection has half shroud two (13), the fixed cover of half shroud two (13) outside is equipped with connects lid (14), sampling mouth (9) right-hand member through connection has half shroud one (12), the fixed cover of half shroud one (12) outside is equipped with connecting seat (15), connecting seat (15) surface and connection lid (14) inner wall threaded connection, sampling mouth (9) left end is provided with mouth head (11), the narrow wide setting of going up under mouth head (11), connect lid (14) bottom surface and dead lever (16) top surface fixed connection, dead lever (16) bottom surface and pitot tube (17) top surface fixed connection.
3. The integrated smoke and dust sampling device according to claim 1, wherein: the air inlet pipe (18) is provided with a one-way valve.
4. The integrated smoke and dust sampling device according to claim 1, wherein: the heating pipe (22) other end and sampling barral of a gun (6) top surface through connection, sampling barral of a gun (6) bottom surface through connection has muffler (24), muffler (24) other end and heat transfer case (4) right flank through connection.
5. The integrated smoke and dust sampling device according to claim 1, wherein: the air outlet pipe (30) is positioned in the heat exchange box (4) and is spirally arranged.
6. The integrated smoke and dust sampling device according to claim 1, wherein: sampling box (5) inside is provided with stop ring (29), narrow width down on stop ring (29), stop ring (29) surface and sampling box (5) inner wall fixed connection, stop ring (29) have four and set up from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010774732.1A CN111855330A (en) | 2020-08-04 | 2020-08-04 | Smoke and dust integration sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010774732.1A CN111855330A (en) | 2020-08-04 | 2020-08-04 | Smoke and dust integration sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111855330A true CN111855330A (en) | 2020-10-30 |
Family
ID=72953314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010774732.1A Withdrawn CN111855330A (en) | 2020-08-04 | 2020-08-04 | Smoke and dust integration sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111855330A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432826A (en) * | 2020-12-03 | 2021-03-02 | 华能秦煤瑞金发电有限责任公司 | Power plant flue gas sulfur dioxide monitoring devices |
| CN117109996A (en) * | 2023-10-25 | 2023-11-24 | 成都蓝湖科技有限公司 | Analysis sampling system of sulfur analysis ratio instrument |
-
2020
- 2020-08-04 CN CN202010774732.1A patent/CN111855330A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432826A (en) * | 2020-12-03 | 2021-03-02 | 华能秦煤瑞金发电有限责任公司 | Power plant flue gas sulfur dioxide monitoring devices |
| CN117109996A (en) * | 2023-10-25 | 2023-11-24 | 成都蓝湖科技有限公司 | Analysis sampling system of sulfur analysis ratio instrument |
| CN117109996B (en) * | 2023-10-25 | 2024-01-02 | 成都蓝湖科技有限公司 | Analysis sampling system of sulfur analysis ratio instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111896335A (en) | Integrated smoke dust sampling method | |
| CN111855330A (en) | Smoke and dust integration sampling device | |
| CN106725188A (en) | Cleaning machine | |
| CN207862319U (en) | A kind of fruit wine distiller | |
| CN212757846U (en) | Oil smoke dust pelletizing system of forming machine | |
| CN215805178U (en) | Vacuum pump air inlet filter equipment | |
| CN112642493A (en) | Gas direct-fired horizontal impregnation drying production line | |
| CN216894643U (en) | Light gas inlet heating synergistic device | |
| CN207856588U (en) | The filter of high temperature tar gas condensing trapping oil removing | |
| CN208565001U (en) | Sliding valve vacuum pump | |
| CN211885460U (en) | Urea preparation lime set cooler | |
| CN210136036U (en) | Detection device for horizontal steam turbine condenser | |
| CN209279705U (en) | A kind of condenser vacuum raising device for power plant | |
| CN208998343U (en) | A kind of Separated self-control adjusting boiler smoke condenser | |
| CN221630441U (en) | Wood vinegar collecting equipment of liquefier | |
| CN206675488U (en) | Cleaning machine | |
| CN206027315U (en) | Simple and easy type condensation purifies smoke treatment device | |
| CN219209490U (en) | Waste gas zero release purification drying device | |
| CN214715466U (en) | Gas condensing device for sodium hyaluronate production | |
| CN214949452U (en) | Industrial dehumidifier | |
| CN205913984U (en) | Cold water oil separating of doing of multi -functional environmental protection filters and collects integrative clearing machine | |
| CN221425435U (en) | Cooler capable of recovering waste heat | |
| CN220818092U (en) | Circulation water saving device | |
| CN214310411U (en) | Energy-saving and environment-friendly detector for air humidity of building plant area | |
| CN214972674U (en) | Petrochemical exhaust treatment device |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201030 |