CN113138104A - Industrial waste gas sampling device suitable for multiple outlet duct - Google Patents
Industrial waste gas sampling device suitable for multiple outlet duct Download PDFInfo
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- CN113138104A CN113138104A CN202110398416.3A CN202110398416A CN113138104A CN 113138104 A CN113138104 A CN 113138104A CN 202110398416 A CN202110398416 A CN 202110398416A CN 113138104 A CN113138104 A CN 113138104A
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- waste gas
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- 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
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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- 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
-
- 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
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2214—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling by sorption
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- 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
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
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- 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
- G01N1/2247—Sampling from a flowing stream of gas
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- 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
- G01N1/2247—Sampling from a flowing stream of gas
- G01N2001/227—Sampling from a flowing stream of gas separating gas from solid, e.g. filter
Abstract
The invention discloses an industrial waste gas sampling device suitable for various outlet pipes, which comprises a collecting device, a gas pipe, a waste gas treatment device and a collecting box, wherein the collecting device is movably connected to the gas pipe, the other end of the gas pipe is communicated with the inside of the collecting box, the waste gas treatment device is arranged above the collecting box, the collecting device comprises a rubber airbag, sealing cloth, a supporting pipe, a telescopic rod, a base, a folding baffle, an inflating nozzle and a clockwork spring, one end of the supporting pipe is movably arranged on the base, the telescopic rod is movably connected to one side of the base, the other end of the telescopic rod is movably connected to the supporting pipe, one side of the supporting pipe, which is close to the base, is connected with the base through the folding baffle, the clockwork spring is arranged inside the supporting pipe, and the clockwork spring is fixedly connected with the sealing cloth. The invention can adjust the air outlets of different waste gases differently, has good sealing performance, reduces the leakage of the waste gases, is provided with a simple waste gas adsorption device, can purify the waste gas residue in the equipment and avoids the waste gas leakage from polluting the environment.
Description
Technical Field
The invention belongs to the technical field of waste gas collection, and particularly relates to an industrial waste gas sampling device suitable for various gas outlet pipes.
Background
Industrial waste gases are an important source of atmospheric pollutants. A large amount of industrial waste gas is discharged into the atmosphere, so that the quality of the atmospheric environment is inevitably reduced, serious harm is brought to the human health, and huge loss is caused to national economy. After harmful substances in industrial waste gas enter a human body through a respiratory tract and skin, temporary and permanent pathological changes can be caused to systems and organs such as breath, blood, liver and the like of the human body, and particularly benzopyrene polycyclic aromatic hydrocarbons can directly cause carcinogenesis of the human body to attract high attention of the human body. The existing industrial waste gas detection mainly has two modes, the first mode is to use a sampling bottle to sample and then take back a professional detection mechanism to carry out comprehensive detection on waste gas, and the second mode is to use a portable waste gas detector to carry out simple on-site detection; the traditional sampling bottle sampling method has the following problems in the use process: 1. because the waste gas outlets of different devices of different factories are various and have no uniform standard, no standard device is used for sealing and blocking the gas outlet pipe in the waste gas sampling process, and the waste gas is easy to leak and pollute the environment; 2. after the sampling of waste gas is accomplished, there is waste gas to remain in the sampling equipment, does not have just to shut down equipment through handling, leads to remaining waste gas to flow into and cause the pollution in the atmosphere or waste gas remains in the sampling equipment always, influences the sampling result next time.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides an industrial waste gas sampling device suitable for various gas outlet pipes, can be used for making different adjustments aiming at different waste gas outlets, has good sealing performance, reduces the leakage of waste gas, is provided with a simple waste gas adsorption device, can purify the waste gas residue in equipment, and avoids the waste gas leakage from polluting the environment.
In order to achieve the purpose, the invention adopts the technical scheme that:
the industrial waste gas sampling device suitable for various gas outlet pipes comprises a collecting device, a gas conveying pipe, a waste gas treatment device and a collecting box, wherein the collecting device is movably connected to the gas conveying pipe, the other end of the gas conveying pipe is communicated with the inside of the collecting box, and the waste gas treatment device is arranged above the collecting box; the collecting device comprises a rubber air bag, sealing cloth, supporting tubes, telescopic rods, a base, a folding baffle, an inflating nozzle, a clockwork spring, wherein one end of each supporting tube is movably installed on the base, one side of the base is movably connected with the telescopic rods, the other end of each telescopic rod is movably connected onto the corresponding supporting tube, one side of each supporting tube, which is close to the base, is connected with the base through the corresponding folding baffle, waste gas leakage is prevented, the clockwork spring is arranged inside each supporting tube, the clockwork spring is fixedly connected with the sealing cloth, the rubber air bag is fixedly installed on the sealing cloth between the two supporting tubes, the inflating nozzle is arranged on one side of the rubber air bag, and the base is movably installed on a gas pipe.
The gas-supply pipe includes that flexible hose, rotating vane, dust detector, collecting box outside gas-supply pipe are equipped with one end flexible hose, and gas-supply pipe elbow department is equipped with rotating vane, and the gas-supply pipe end is equipped with dust detector.
The collecting box includes the access hole, the sample connection, the fly leaf, the air vent, telescopic cylinder, the sampling bottle, the piston, the limiting plate, the baffle, including a motor, an end cap, a controller, and a cover plate, the sealing washer, collecting box one side is equipped with the access hole, the inside baffle that is equipped with of collecting box, the baffle bottom is equipped with the fly leaf, fly leaf one side is equipped with tooth and is connected with motor output end gear engagement, the baffle opposite side is equipped with the limiting plate, be equipped with the sample connection on limiting plate opening part one side collecting box, movable mounting has the sampling bottle on the limiting plate, the sampling bottle is equipped with the same piston from top to bottom respectively, be equipped with two sets of sealing washers on the piston, be equipped with the through-hole between two sets of sealing washers, piston one side fixedly connected with telescopic cylinder, telescopic cylinder other end fixed mounting is on the collecting box inside wall, the sampling bottle top is equipped with exhaust treatment device.
Waste gas treatment device includes the air pump, the trachea, the rose box, the venthole, the UV fluorescent tube, the catalyst board, the fixed plate, the active carbon adsorption board, filter cloth, the sampling bottle top is located to the UV fluorescent tube, the UV fluorescent tube is equipped with the catalyst board all around, the fixed intercommunication UV light oxygen chamber of trachea, be equipped with the air pump on the trachea, air pump fixed mounting is in the collecting box top, the trachea other end intercommunication rose box, the rose box bottom is equipped with the fixed plate all around, fixed plate fixed mounting is on the collecting box, rose box inside is equipped with active carbon adsorption board and filter cloth, filter cloth is located and is close to trachea one side, venthole one side is located to the active carbon adsorption board, the venthole is located rose box one side.
Preferably, the rubber air bag is consistent with the sealing cloth in width, the rubber air bag is attached to the surface of the sealing cloth and moves along with the sealing cloth, the rubber air bag is unfolded simultaneously in the unfolding process of the sealing cloth, and after the supporting tube is in place, the rubber air bag is inflated through the inflating nozzle, so that gaps between the sealing cloth and the tube wall can be filled, and the airtightness is improved to prevent waste gas leakage.
Preferably, the base is provided with a plurality of handles, so that the base can be conveniently adjusted in a rotating mode.
Preferably, the activated carbon adsorption plate is of a fold line shape, so that the contact area of the activated carbon adsorption plate with waste gas can be increased, and the activated carbon adsorption plate is convenient for adsorption treatment.
Compared with the prior art, the invention has the beneficial effects that:
1) through the position of independent adjustment stay tube with the base, can make collection device be applicable to the waste gas outlet of different shapes, specifically as follows: if the air outlet pipe is circular or elliptical, the diameter of the opening at the tail end is reduced or expanded by independently controlling the supporting pipe through the telescopic rod; if the air outlet pipe is square or polygonal, the base can be rotated by the handle arranged on the base, so that part of the supporting pipe is positioned at the corner of the polygon, and the tightness is enhanced; at the in-process that the stay tube enlarges or reduces, sealed cloth accomplishes under clockwork spring's effect and stretches out and draws back, guarantees that sealed cloth between two sets of stay tubes is tight, and accessible charging connector aerifys the rubber gasbag on sealed cloth afterwards, fills the space, and the reinforcing seal to can guarantee the leakproofness, prevent that waste gas from leaking, cause environmental pollution.
2) Through setting up portable waste gas adsorption equipment, will remain the waste gas pump in equipment with the air pump and discharge after the absorption treatment, prevent that waste gas from remaining inside the equipment always, influencing the sample result next time.
3) The rubber air bag is attached to the surface of the sealing cloth and can move along with the sealing cloth, when the supporting tube is in place, the rubber air bag is inflated through the inflating nozzle, the gap between the tube walls of the sealing cloth can be filled, and the airtightness is improved to prevent waste gas leakage.
Drawings
FIG. 1 is a schematic structural diagram of an industrial waste gas sampling device suitable for various gas outlet pipes.
FIG. 2 is a schematic view of the top view of an industrial waste gas sampling device suitable for various gas outlet pipes.
FIG. 3 is a schematic diagram of the internal structure of an industrial waste gas sampling device suitable for various gas outlet pipes.
FIG. 4 is a schematic view of a sampling bottle configuration.
Fig. 5 is a schematic view of the structure of the collecting device.
Fig. 6 is a cross-sectional view taken at a-a of fig. 2.
Fig. 7 is a partial enlarged view of fig. 5 at B.
In the figure: 10. a collection device; 11. a gas delivery pipe; 12. an exhaust gas treatment device; 13. a collection box; 101. a rubber air bag; 102. sealing cloth; 103. supporting a tube; 104. a telescopic rod; 105. a base; 106. folding the baffle; 111. a flexible hose; 112. a rotating blade; 113. a dust detector; 121. an air pump; 122. an air tube; 123. a filter box; 124. an air outlet; 125. a UV lamp tube; 126. a catalyst plate; 127. a fixing plate; 131. an access hole; 132. a sampling port; 133. a movable plate; 134. a vent hole; 135. a telescopic cylinder; 136. sampling a bottle; 137. a piston; 138. a limiting plate; 139. a partition plate; 1011. an air charging nozzle; 1031. a clockwork spring; 1231. an activated carbon adsorption plate; 1232. a filter cloth; 1331. a motor; 1371. and (5) sealing rings.
Detailed Description
For the convenience of understanding of those skilled in the art, the technical solution of the present invention will be further described in detail with reference to fig. 1 to 7.
The industrial waste gas sampling device suitable for multiple air outlet pipes comprises a collecting device 10, an air conveying pipe 11, a waste gas treatment device 12 and a collecting box 13, wherein the collecting device 10 is movably connected to the air conveying pipe 11, the other end of the air conveying pipe 11 is communicated with the inside of the collecting box 13, the waste gas treatment device 12 is arranged above the collecting box 13, and waste gas is treated and then discharged; the collecting device 10 comprises a rubber air bag 101, sealing cloth 102, supporting tubes 103, an expansion link 104, a base 105, a folding baffle 106, an inflating nozzle 1011, a clockwork spring 1031, one end of the supporting tube 103 is movably mounted on the base 105, one side of the base 105 is movably connected with the expansion link 104, the other end of the expansion link 104 is movably connected on the supporting tube 103, the supporting tube 103 is close to one side of the base 105 and is connected with the base 105 through the folding baffle 106, waste gas leakage is prevented, the clockwork spring 1031 is arranged inside the supporting tube 103, the clockwork spring 1031 is fixedly connected with the sealing cloth 102, the rubber air bag 101 is fixedly mounted on the sealing cloth 102 between the two supporting tubes 103, the inflating nozzle 1011 is arranged on one side of the rubber air bag 101, and the base 105 is movably mounted on the air delivery pipe 11.
The gas pipe comprises a flexible hose 111, a rotating blade 112, a dust detector 113 and a collecting box 13, wherein the flexible hose 111 at one end is arranged on the gas pipe 11 outside the gas pipe and is used for adapting to different working environments, the rotating blade 112 is arranged at the elbow of the gas pipe 11 and is used for measuring the flow of waste gas, the dust detector 113 is arranged at the tail end of the gas pipe 11 and is a component in the prior art, the model of the dust detector is YR-FD100, and the dust detector is obtained through private customization or purchase.
The collecting box 13 comprises an access port 131, a sampling port 132, a movable plate 133, a vent hole 134, a telescopic cylinder 135, a sampling bottle 136, a piston 137, a limit plate 138, a partition plate 139, a motor 1331 and a sealing ring 1371, collecting box 13 one side is equipped with access hole 131, the inside baffle 139 that is equipped with of collecting box 13, baffle 139 bottom is equipped with fly leaf 133, fly leaf 133 one side is equipped with the tooth and is connected with motor 1331 output gear engagement, baffle 139 opposite side is equipped with limiting plate 138, be equipped with sample connection 132 on limiting plate 138 opening part one side collecting box 13, movable mounting has sample bottle 136 on the limiting plate 138, sample bottle 136 is equipped with same piston 137 from top to bottom respectively, be equipped with two sets of sealing washer 1371 on the piston 137, be equipped with the through-hole between two sets of sealing washer 1371, piston 137 one side fixedly connected with telescopic cylinder 135, telescopic cylinder 135 other end fixed mounting is on the collecting box 13 inside wall, sample bottle 136 top is equipped with exhaust treatment device 12.
The exhaust gas treatment device 12 includes an air pump 121, an air pipe 122, a filter box 123, an air outlet 124, a UV lamp 125, a catalyst plate 126, a fixing plate 127, an activated carbon adsorption plate 1231, a filter cloth 1232, the UV lamp 125 is arranged above a sampling bottle 136, the catalyst plate 126 is arranged around the UV lamp 125, the air pipe 122 is fixedly communicated with a UV photo-oxygen chamber, the air pump 121 is arranged on the air pipe 122, the air pump 121 is fixedly arranged above the collecting box 13, the other end of the air pipe 122 is communicated with the filter box 123, the fixing plate 127 is arranged around the bottom of the filter box 123, the fixing plate 127 is fixedly arranged on the collecting box 13, the activated carbon adsorption plate 1231 and the filter cloth 1232 are arranged inside the filter box 123, the filter cloth 1232 is arranged on one side close to the air pipe 122, the activated carbon adsorption plate 1231 is arranged on one side of the air outlet 124, and the air outlet 124 is arranged on one side of the filter box 123.
Further, the width of the rubber air bag 101 is consistent with that of the sealing cloth 102, the rubber air bag 101 is attached to the surface of the sealing cloth 102 and moves along with the sealing cloth 102, the rubber air bag 101 is unfolded along with the unfolding of the sealing cloth 102 in the unfolding process, and after the supporting pipe 103 is in place, the rubber air bag 101 is inflated through the inflating nozzle 1011, so that gaps between the sealing cloth and the pipe wall can be filled, and the airtightness is improved to prevent waste gas leakage.
The base 105 is provided with a plurality of handles, so that the base 105 can be adjusted in a rotating manner.
The activated carbon adsorption plate 1231 is in a zigzag shape, can increase the contact area with waste gas, and is convenient for adsorption treatment.
The utility model provides an industrial waste gas sampling device suitable for multiple outlet duct, the working process as follows: when the waste gas needs to be sampled and detected, the collecting device 10 is placed in a detected waste gas outlet pipe, if the waste gas outlet pipe is a circular or oval outlet pipe, the telescopic rod 104 is used for independently controlling the support pipe 103 to reduce or expand the opening diameter of the tail end, and if the waste gas outlet pipe is a square or polygonal outlet pipe, the base 105 can be rotated through a handle arranged on the base 105, so that part of the support pipe 103 is positioned at the corner of the polygon, and the tightness is enhanced; in the process of expanding or contracting the support tubes 103, the sealing cloth 102 is stretched under the action of the spring 1031 to ensure that the sealing cloth 102 between the two groups of support tubes 103 is tight, the rubber airbag 101 moves along with the sealing cloth 102, then the rubber airbag 101 attached to the sealing cloth 102 can be inflated through the inflating nozzle 1011 to fill a gap and enhance the tightness, after the installation is completed, the waste gas outlet pipe can be opened to enable waste gas to enter the collection box 13 through the gas pipe 11, the flow of the waste gas is measured through the rotary blades 112 in the gas pipe 11, the dust content in the waste gas is measured through the dust detector 113, and then the detected waste gas enters the other side of the partition 139 through the vent 134 formed between the partition 139 and the movable plate 133; the telescopic cylinder 135 drives the pistons 137 to move, so that the upper and lower pistons 137 are exposed out of the through holes, the exhaust gas moves from bottom to top to discharge the air in the sampling bottle 136, then the upper telescopic cylinder 135 moves to push the pistons 137 to close the upper through holes, the exhaust gas is stored in the sampling bottle 136, after reaching the standard, a part of the lower pistons are closed, at least one group of upper pistons of the sampling bottle 136 are opened to ensure that the exhaust gas can move to the upper part of the collection box 13 at the bottom of the collection box 13, then the motor 1331 is started to drive the movable plate 133 to move, the vent holes 134 at the bottom of the partition 139 are closed, the air pump 121 is started, the exhaust gas is irradiated by the UV lamp tube 125, then undergoes an oxidation reaction with the catalyst plate 126, then is pumped into the filter box 123 by the air pump 121 through the air pipe 122, the activated carbon adsorption plate 1231 is subjected to adsorption treatment after dust removal and filtration by the filter cloth 1232, and is finally discharged through the air outlet 124, the sampling port 132 is opened after the treatment of the exhaust gas, taking out the sampling bottle 136 from the limiting plate 138 to finish sampling the waste gas; the filter box 123 passes through the fixing plate 127 above the collecting box 13 and is fixed in position, and the filter box 123 can be taken down at any time after use so as to be convenient for transportation; in the use, regularly open access hole 131 and overhaul collecting box 13 inside, ensure that equipment can normally work.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.
Claims (7)
1. The industrial waste gas sampling device suitable for various gas outlet pipes comprises a collecting device, a gas conveying pipe, a waste gas treatment device and a collecting box, and is characterized in that the collecting device is movably connected to the gas conveying pipe, the other end of the gas conveying pipe is communicated with the inside of the collecting box, and the waste gas treatment device is arranged above the collecting box; the collecting device comprises a rubber air bag, sealing cloth, a supporting tube, a telescopic rod, a base, a folding baffle, an inflating nozzle and a clockwork spring, wherein one end of the supporting tube is movably installed on the base, one side of the base is movably connected with the telescopic rod, the other end of the telescopic rod is movably connected onto the supporting tube, one side of the supporting tube, which is close to the base, is connected with the base through the folding baffle, the clockwork spring is arranged inside the supporting tube, the clockwork spring is fixedly connected with the sealing cloth, the rubber air bag is fixedly installed on the sealing cloth between the two supporting tubes, the inflating nozzle is arranged on one side of the rubber air bag, and the base is movably installed on a gas pipe.
2. The industrial waste gas sampling device suitable for multiple air outlet pipes according to claim 1, wherein the air delivery pipe comprises a flexible hose, a rotating blade, a dust detector, the air delivery pipe outside the collecting box is provided with an end flexible hose, the elbow of the air delivery pipe is provided with a rotating blade, and the tail end of the air delivery pipe is provided with a dust detector.
3. The industrial waste gas sampling device suitable for the plurality of gas outlet pipes according to claim 1, the collecting box comprises an access hole, a sampling port, a movable plate, an air vent, a telescopic cylinder, a sampling bottle, a piston, a limiting plate, a partition plate, a motor, a sealing ring, wherein the access hole is formed in one side of the collecting box, the partition plate is arranged in the collecting box, the movable plate is arranged at the bottom of the partition plate, teeth are arranged on one side of the movable plate and connected with a gear of the output end of the motor in a meshed mode, the limiting plate is arranged on the other side of the partition plate, the sampling port is arranged on the collecting box on one side of the opening of the limiting plate, the sampling bottle is movably mounted on the limiting plate, the same piston is arranged on the sampling bottle vertically, two groups of sealing rings are arranged on the piston, a through hole is formed between the two groups of sealing rings, the telescopic cylinder is fixedly connected to one side of the piston, the other end of the telescopic cylinder is fixedly mounted on the inner side wall of the collecting box, and a waste gas treatment device is arranged above the sampling bottle.
4. The industrial waste gas sampling device suitable for various gas outlet pipes according to claim 1, wherein the waste gas treatment device comprises an air pump, an air pipe, a filter box, a gas outlet, a UV lamp tube, a catalyst plate, a fixed plate, an active carbon adsorption plate and filter cloth, the UV lamp tube is arranged above the sampling bottle, the catalyst plate is arranged around the UV lamp tube, the air pipe is fixedly communicated with a UV light oxygen chamber, the air pump is arranged on the air pipe, the air pump is fixedly arranged above the collecting box, the other end of the air pipe is communicated with the filter box, the fixed plate is arranged around the bottom of the filter box, the fixed plate is fixedly arranged on the collecting box, the active carbon adsorption plate and the filter cloth are arranged inside the filter box, the filter cloth is arranged on one side close to the air pipe, the active carbon adsorption plate is arranged on one side of the gas outlet, and the gas outlet is arranged on one side of the filter box.
5. The industrial waste gas sampling device suitable for various gas outlet pipes as claimed in claim 1, wherein the rubber air bag is as wide as the sealing cloth, the rubber air bag is attached to the surface of the sealing cloth and moves along with the sealing cloth, the rubber air bag is unfolded along with the sealing cloth during the unfolding process of the sealing cloth, and when the supporting pipe is in place, the rubber air bag is inflated through the inflating nozzle, so that the gap between the sealing cloth and the pipe wall can be filled.
6. The industrial waste gas sampling device suitable for the plurality of gas outlet pipes as claimed in claim 1, wherein the base is provided with a plurality of handles.
7. The industrial waste gas sampling device suitable for various gas outlet pipes according to claim 4, wherein the activated carbon adsorption plate is in a zigzag shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110398416.3A CN113138104B (en) | 2021-04-11 | 2021-04-11 | Industrial waste gas sampling device suitable for multiple outlet duct |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110398416.3A CN113138104B (en) | 2021-04-11 | 2021-04-11 | Industrial waste gas sampling device suitable for multiple outlet duct |
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| CN113138104A true CN113138104A (en) | 2021-07-20 |
| CN113138104B CN113138104B (en) | 2022-09-20 |
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Cited By (1)
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| CN115072721A (en) * | 2022-06-15 | 2022-09-20 | 安徽东旭大别山农业科技有限公司 | Improved oil tea activated carbon preparation equipment and preparation method thereof |
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|---|---|---|---|---|
| CN115072721A (en) * | 2022-06-15 | 2022-09-20 | 安徽东旭大别山农业科技有限公司 | Improved oil tea activated carbon preparation equipment and preparation method thereof |
| CN115072721B (en) * | 2022-06-15 | 2023-09-05 | 安徽东旭大别山农业科技有限公司 | Improved camellia oleifera active carbon preparation equipment and preparation method thereof |
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