CN111888919B - Purification device for removing tail gas of laboratory fume hood - Google Patents
Purification device for removing tail gas of laboratory fume hood Download PDFInfo
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- CN111888919B CN111888919B CN202010671926.9A CN202010671926A CN111888919B CN 111888919 B CN111888919 B CN 111888919B CN 202010671926 A CN202010671926 A CN 202010671926A CN 111888919 B CN111888919 B CN 111888919B
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- treatment box
- air inlet
- inlet pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Analytical Chemistry (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses a purification device for removing tail gas of a laboratory fume hood, which comprises an air inlet pipe, an anti-backflow assembly arranged on the air inlet pipe, a treatment box connected with the air inlet pipe, an air outlet arranged at the top of the treatment box, and a liquid outlet arranged at the bottom of the treatment box; the anti-backflow component comprises a cover plate, a hinge for connecting the cover plate with the air inlet pipe and a supporting block arranged on the inner wall of the air inlet pipe; the air inlet pipe is connected with an air supply pipe arranged in the treatment box, and an air supply port is arranged on the air supply pipe; a rotating shaft is arranged in the air supply pipe, and a stirring blade penetrating through the air supply pipe is arranged on the rotating shaft. The backflow prevention assembly can prevent fog contained in the tail gas from dripping to the operation table from the ventilating duct when being condensed, and avoids the corrosion damage of the operation table and the influence on a processed sample; the stirring blade arranged in the treatment box can rotate along with the rotating shaft, so that tail gas can be fully contacted with the reagent solution in the treatment box, and the tail gas treatment effect is ensured.
Description
Technical Field
The invention belongs to the technical field of experimental equipment, and particularly relates to a purification device for removing tail gas of a laboratory fume hood.
Background
Laboratory experiments are typically performed in a fume hood. Because of different raw materials and various reaction types used in experiments, tail gas with complex components, such as acid gas and the like, is often generated in the experimental process, and if the tail gas is not treated or not treated properly, the tail gas not only can cause harm to the physical health of experimenters, but also can pollute the environment.
The fume hood that uses regularly can cool gradually and condense into the liquid drop at tail gas entering pipeline rear portion fog, then from the intraductal drippage of draught to the operation panel, not only can damage the operation panel, but also can pollute the sample of handling, influence experimental data.
Disclosure of Invention
The invention provides a purification device for removing tail gas of a laboratory fume hood, which is used for solving the problems of improper treatment of the tail gas of the laboratory fume hood and the like.
In order to solve the technical problems, the invention adopts the following technical scheme:
a purification device for removing tail gas of a laboratory fume hood comprises an air inlet pipe, an anti-backflow assembly arranged on the air inlet pipe, a treatment box connected with the air inlet pipe, an air outlet arranged at the top of the treatment box and provided with a first valve, and a liquid outlet arranged at the bottom of the treatment box; the anti-backflow assembly comprises a cover plate, a hinge and a supporting block, wherein the cover plate is connected with the air inlet pipe; a pore passage is arranged in the supporting block, a spring is arranged at the bottom of the pore passage, and a first electromagnet is arranged in the supporting block; a first magnetic material and a second magnetic material are arranged in the cover plate; a second electromagnet is arranged on the inner wall of the air inlet pipe on one side of the hinge; the air inlet pipe is connected with an air supply pipe arranged in the treatment box, and an air supply port is arranged on the air supply pipe; a rotating shaft is arranged in the air supply pipe, one end of the rotating shaft is fixed on the inner wall of the treatment box, the other end of the rotating shaft is connected with the output end of a motor through a belt, and the motor is fixed on the base; the rotating shaft is provided with a stirring blade penetrating through the air supply pipe; a controller is arranged outside the treatment box; and a third valve is arranged on the air inlet pipe. The anti-backflow component can prevent mist contained in the tail gas from dripping to the operating platform from the ventilating duct during condensation, and corrosion damage of the operating platform and influence on a processed sample are avoided.
Furthermore, the air inlet pipe comprises an inner pipe and an outer pipe connected with the inner pipe through a partition plate, a groove is formed among the inner pipe, the partition plate and the outer pipe, and a liquid discharge pipe is arranged on the groove; the connection part of the groove and the liquid discharge pipe is the lowest point of the groove, and the groove gradually rises from the lowest point to two sides. The arrangement of the groove is convenient for the condensed liquid drops of the fog in the tail gas to enter, the condensed liquid drops are prevented from entering the operation table, and the gradual rising design of the groove is convenient for the liquid drops to be discharged.
Further, the inner pipe is connected with the cover plate through a hinge; the cover plate is in a circular arc shape with a high middle part and a low edge; the projection area relation of the cover plate, the inner pipe and the outer pipe on the longitudinal axis is as follows: the S outer pipe is greater than the S baffle and the S inner pipe. The cover plate can cover the inner pipe by the area arrangement of the cover plate and is slightly larger than the inner pipe, so that condensed liquid drops can fall into the groove conveniently.
Furthermore, the stirring blade is a hollow body formed by surrounding a grid body, and the inside of the stirring blade is filled with particle fillers which are porous materials. The porous material is used as the filler, so that the contact area of the tail gas can be increased, and the subsequent treatment is facilitated.
Further, the air supply port comprises a shell and a first stop block arranged at an upper port of the shell, and the first stop block is annular; the shell is internally provided with a movable pull rod, the bottom of the pull rod is provided with a second stop block, and the top of the pull rod is provided with a top cover. The pull rod can move up and down, so that tail gas can flow out from the gas supply port when the pull rod moves downwards, and the pull rod covers the gas supply port when the pull rod moves upwards to prevent untreated tail gas from being discharged.
Furthermore, a hole is formed in the shell, and the area where the hole is formed is the area where the pull rod moves. The gas supply port is of a structure that the shell is connected with the movable pull rod, when the gas supply port faces upwards, the pull rod blocks the hole downwards to prevent tail gas from leaking out, when the gas supply port faces downwards gradually, the pull rod is downward under the action of gravity to take the tail gas out of the hole, and the tail gas is ensured to be fully contacted with the medicament solution.
Further, be provided with the adsorbed layer in the processing case, the inside packing of adsorbed layer has active carbon. The activated carbon can further adsorb the treated tail gas, so that the treatment effect is ensured.
Further, an air return pipe is arranged on an exhaust port between the treatment box and the first valve, a second valve is arranged on the air return pipe, and the air return pipe extends into the treatment box and is connected with the air supply pipe. The muffler has the function of performing treatment for 2 times or more when the tail gas has more pollutants, so that the treatment rate of harmful components is ensured.
The invention has the beneficial effects that: 1. the anti-backflow component can prevent the mist contained in the tail gas from dripping to the operating platform from the ventilating duct when condensing, so that the corrosion damage of the operating platform and the influence on a processed sample are avoided; 2. the stirring blade arranged in the treatment box can rotate along with the rotating shaft, so that the tail gas can be fully contacted with the medicament solution in the treatment box, and the harmful components in the tail gas are further reduced; 3. the air supply port is of a structure that the shell is connected with the movable pull rod, when the air supply port is upward, the hole is blocked by the pull rod downward, so that the tail gas is prevented from leaking out, when the air supply port gradually faces downward, the pull rod is downward under the action of gravity, the tail gas can be taken out of the hole, and the tail gas can be fully contacted with the medicament solution.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic structural view of the backflow prevention assembly.
FIG. 3 is a schematic view of the structure of the stirring blade.
Fig. 4 is a schematic view of the structure of the air supply port.
Reference numerals are as follows: 1-inlet pipe, 2-third valve, 3-treatment tank, 4-adsorption layer, 5-exhaust port, 6-first valve, 7-second valve, 8-return pipe, 9-air feed pipe, 10-rotation shaft, 11-stirring blade, 111-mesh body, 112-particle filler, 12-air feed port, 121-shell, 122-hole, 123-second stopper, 124-first stopper, 125-top cover, 126-pull rod, 13-controller, 14-motor, 15-base, 16-backflow prevention component, 160-cover plate, 161-second magnetic material, 162-first electromagnet, 163-first magnetic material, 164-second electromagnet, 165-hinge, 166-supporting block, 167-hole, 168-spring, 17-drain.
Detailed Description
In order to facilitate a better understanding of the invention, reference is made to the following examples, which are set forth to illustrate, but are not to be construed as the limit of the invention.
Examples
As can be seen from fig. 1, the present invention provides a purification device for removing laboratory fume hood tail gas, comprising an air inlet pipe 1, a backflow prevention assembly 16 disposed on the air inlet pipe 1, a treatment tank 3 connected to the air inlet pipe 1, an exhaust port 5 disposed at the top of the treatment tank 3 and provided with a first valve 6, and a liquid discharge port 17 disposed at the bottom of the treatment tank 3; the backflow prevention assembly 16 comprises a cover plate 160, a hinge 165 for connecting the cover plate 160 with the air inlet pipe 1, and a supporting block 166 arranged on the inner wall of the air inlet pipe 1; a duct 167 is arranged in the supporting block, a spring 168 is arranged at the bottom of the duct 167, and a first electromagnet 162 is arranged in the supporting block 166; a first magnetic material 163 and a second magnetic material 161 are arranged inside the cover plate 160; a second electromagnet 164 is arranged on the inner wall of the air inlet pipe 1 on one side of the hinge 165; the air inlet pipe 1 is connected with an air supply pipe 9 arranged in the treatment box 3, and an air supply port 12 is arranged on the air supply pipe 9; a rotating shaft 10 is arranged in the air feed pipe 9, one end of the rotating shaft 10 is fixed on the inner wall of the treatment box 3, the other end of the rotating shaft is connected with the output end of a motor 14 through a belt, and the motor 14 is fixed on a base 15; the rotating shaft 10 is provided with a stirring blade 10 which passes through the air feed pipe 9; a controller 13 is arranged outside the treatment box 3; the air inlet pipe 1 is provided with a third valve 2.
Be provided with adsorbed layer 4 in handling case 3, the inside packing of adsorbed layer 4 has active carbon.
An air return pipe 8 is arranged on the exhaust port 5 between the treatment box 3 and the first valve 6, a second valve 7 is arranged on the air return pipe 8, and the air return pipe 8 extends into the treatment box and is connected with an air feed pipe 9.
As can be seen from fig. 2, the air inlet pipe 1 includes an inner pipe 102 and an outer pipe 103 connected to the inner pipe 102 through a partition plate 101, a groove 104 is formed among the inner pipe 102, the partition plate 101 and the outer pipe 103, and a liquid discharge pipe 105 is disposed on the groove 104; the connection between the groove 104 and the drain pipe 105 is the lowest point of the groove 104, and the groove 104 gradually rises from the lowest point to two sides.
The inner tube 102 is connected to the cover plate 160 by a hinge 165; the cover plate 160 is in the shape of a circular arc with a high middle and a low edge; the projected area relation of the cover plate 160, the inner tube 102 and the outer tube 103 on the longitudinal axis is as follows: the S outer pipe is greater than the S baffle and the S inner pipe.
As shown in fig. 3, the stirring vane 11 is a hollow body surrounded by the mesh 111, and the inside of the stirring vane 11 is filled with the particulate filler 112, and the particulate filler 112 is a porous material.
As shown in fig. 4, the air inlet 12 includes a housing 121 and a first stopper 124 disposed at an upper end of the housing, and the first stopper 124 has a circular ring shape. A movable pull rod 126 is arranged in the housing 121, a second stopper 123 is arranged at the bottom of the pull rod 126, and a top cover 125 is arranged at the top of the pull rod 123.
The housing 121 is provided with a hole 122, and the area of the hole 122 is the movable area of the pull rod 126. The air supply port is of a structure that the shell is connected with the movable pull rod, when the air supply port is upward, the hole is blocked by the pull rod downward, so that the tail gas is prevented from leaking out, when the air supply port gradually faces downward, the pull rod is downward under the action of gravity, the tail gas can be taken out of the hole, and the tail gas can be fully contacted with the medicament solution.
The use principle is as follows: the cleaning device realizes cleaning of the mortar stirring box body through the spray heads arranged on the first water pipe and the second water pipe, and can increase the pressure of water in the water pipes by adding the pressurizing device on the water pipes when in actual use, thereby accelerating the cleaning efficiency and effect; the buffering that sets up at the discharge gate is protruding can slow down the outflow speed of mortar, prevents that outflow speed is too fast to lead to the mortar layering. The using method comprises the following steps: solid or powdery raw materials such as sand-stone cement and the like are added from the feeding bin, and water is added into the box body through the first water pipe and the second water pipe; after the raw materials and water are properly added, closing the water inlet, starting the motor, and then driving the stirring shaft to start stirring the raw materials; after the stirring is finished, a valve of the discharge port is opened to discharge the mortar from the discharge port, after the discharging is finished, the discharge port is closed, the electromagnetic valve is opened, water rushes out of the cleaning box body and the stirring blades from the spray head, the electromagnetic valve is closed after the cleaning is finished, the cleaned wastewater is discharged through the discharge port, and the wastewater can be further used for stirring the mortar or cleaning the box body after being clarified.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The purification device for removing the tail gas of the laboratory fume hood is characterized by comprising an air inlet pipe (1), an anti-backflow assembly (16) arranged on the air inlet pipe (1), a treatment box (3) connected with the air inlet pipe (1), an exhaust port (5) which is arranged at the top of the treatment box (3) and provided with a first valve (6), and a liquid discharge port (17) arranged at the bottom of the treatment box (3); the backflow prevention assembly (16) comprises a cover plate (160), a hinge (165) for connecting the cover plate (160) with the air inlet pipe (1), and a supporting block (166) arranged on the inner wall of the air inlet pipe (1); a duct (167) is arranged in the supporting block, a spring (168) is arranged at the bottom of the duct (167), and a first electromagnet (162) is arranged in the supporting block (166); a first magnetic material (163) and a second magnetic material (161) are arranged inside the cover plate (160); a second electromagnet (164) is arranged on the inner wall of the air inlet pipe (1) on one side of the hinge (165); the air inlet pipe (1) is connected with an air supply pipe (9) arranged in the treatment box (3), and an air supply opening (12) is formed in the air supply pipe (9); a rotating shaft (10) is arranged in the air feed pipe (9), one end of the rotating shaft (10) is fixed on the inner wall of the treatment box (3), the other end of the rotating shaft is connected with the output end of a motor (14) through a belt, and the motor (14) is fixed on a base (15); the rotating shaft (10) is provided with a stirring blade (11) which penetrates through the air supply pipe (9); a controller (13) is arranged outside the treatment box (3);
the air inlet pipe (1) comprises an inner pipe (102) and an outer pipe (103) connected with the inner pipe (102) through a partition plate (101), a groove (104) is formed among the inner pipe (102), the partition plate (101) and the outer pipe (103), and a liquid discharge pipe (105) is arranged on the groove (104); the joint of the groove (104) and the liquid discharge pipe (105) is the lowest point of the groove (104), and the groove (104) gradually rises from the lowest point to two sides;
the inner pipe (102) is connected with the cover plate (160) through a hinge (165); the cover plate (160) is in a circular arc shape with a high middle part and a low edge; the projection area relation of the cover plate (160), the inner pipe (102) and the outer pipe (103) on the longitudinal axis is as follows: sOuter tube>SCover plate>SAn inner tube;
the stirring blade (11) is a hollow body formed by surrounding a grid body (111), and the inside of the stirring blade (11) is filled with a particle filler (112);
the particulate filler (112) is a porous material;
the air supply port (12) comprises a shell (121) and a first stop block (124) arranged at an upper port of the shell, wherein the first stop block (124) is annular;
a movable pull rod (126) is arranged in the shell (121), a second stop block (123) is arranged at the bottom of the pull rod (126), and a top cover (125) is arranged at the top of the pull rod (126);
the shell (121) is provided with a hole (122), and the area where the hole (122) is arranged is the area where the pull rod (126) moves.
2. The purification device for removing laboratory fume hood tail gas according to claim 1, characterized in that an adsorption layer (4) is arranged in the treatment box (3), and the adsorption layer (4) is filled with activated carbon.
3. A cleaning device for removing laboratory fume hood tail gas according to any one of claims 1-2, characterized in that a gas return pipe (8) is arranged on the exhaust port (5) between the treatment box (3) and the first valve (6), a second valve (7) is arranged on the gas return pipe (8), and the gas return pipe (8) extends into the treatment box and is connected with the gas supply pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671926.9A CN111888919B (en) | 2020-07-14 | 2020-07-14 | Purification device for removing tail gas of laboratory fume hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671926.9A CN111888919B (en) | 2020-07-14 | 2020-07-14 | Purification device for removing tail gas of laboratory fume hood |
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| CN111888919A CN111888919A (en) | 2020-11-06 |
| CN111888919B true CN111888919B (en) | 2022-07-05 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19727038C1 (en) * | 1997-06-25 | 1999-02-04 | Metallgesellschaft Ag | Device for carrying out gas reactions, use of the device and method for operating the device |
| CN106430536A (en) * | 2016-11-12 | 2017-02-22 | 佘小玲 | Aerating apparatus |
| CN107199229A (en) * | 2017-06-19 | 2017-09-26 | 派尔实验装备有限公司 | A kind of vent cabinet with waste collecting device |
| CN108310923A (en) * | 2018-04-16 | 2018-07-24 | 安庆泽远化工有限公司 | A kind of desulfurizing industrial fume system |
| CN108654358A (en) * | 2018-07-18 | 2018-10-16 | 安徽万山红环保科技有限公司 | A kind of daily use chemicals workshop essence room exhaust air deodorization device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201239556Y (en) * | 2008-08-14 | 2009-05-20 | 中北大学 | Fin flow guiding regular packing for distillation operation of rotary packed bed |
| CN203700010U (en) * | 2014-01-07 | 2014-07-09 | 上海清浥环保科技有限公司 | Aerated stirring biochemical reactor |
| CN207347258U (en) * | 2017-08-16 | 2018-05-11 | 福瑞莱环保科技（深圳）股份有限公司 | A kind of combined biofilm reactor |
| CN108283227A (en) * | 2018-04-18 | 2018-07-17 | 贵州省凤冈县翠巅香生态茶业有限公司 | Thermostatic type tea frying device |
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2020
- 2020-07-14 CN CN202010671926.9A patent/CN111888919B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19727038C1 (en) * | 1997-06-25 | 1999-02-04 | Metallgesellschaft Ag | Device for carrying out gas reactions, use of the device and method for operating the device |
| CN106430536A (en) * | 2016-11-12 | 2017-02-22 | 佘小玲 | Aerating apparatus |
| CN107199229A (en) * | 2017-06-19 | 2017-09-26 | 派尔实验装备有限公司 | A kind of vent cabinet with waste collecting device |
| CN108310923A (en) * | 2018-04-16 | 2018-07-24 | 安庆泽远化工有限公司 | A kind of desulfurizing industrial fume system |
| CN108654358A (en) * | 2018-07-18 | 2018-10-16 | 安徽万山红环保科技有限公司 | A kind of daily use chemicals workshop essence room exhaust air deodorization device |
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| CN111888919A (en) | 2020-11-06 |
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