CN111854391B - Tail gas treatment device for drying mechanical parts - Google Patents
Tail gas treatment device for drying mechanical parts Download PDFInfo
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- CN111854391B CN111854391B CN202010777780.6A CN202010777780A CN111854391B CN 111854391 B CN111854391 B CN 111854391B CN 202010777780 A CN202010777780 A CN 202010777780A CN 111854391 B CN111854391 B CN 111854391B
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- oven
- tail gas
- sliding
- gas treatment
- exhaust
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
- F26B23/06—Heating arrangements using electric heating resistance heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
Abstract
The invention discloses a tail gas treatment device for drying mechanical parts, which comprises a material conveying rack and an oven, wherein supporting legs are arranged below two ends of the material conveying rack, a roller way is arranged on the material conveying rack, the oven is arranged in the middle of the material conveying rack, the material conveying rack penetrates through the middle of the oven, and material ports are formed in two side walls of the oven and above the roller way; and a heating plate is arranged in the oven and below the roller way, and the middle part of the heating plate is formed by arranging a plurality of heating pipes in the horizontal direction. According to the exhaust hood, after exhaust gas is generated in the oven, the exhaust pump is used for pumping the exhaust gas, the exhaust gas in the oven is sucked into the exhaust gas treatment assembly through the exhaust hood, the screw is driven through the motor, the sliding seat and the exhaust hood fixed at the bottom of the sliding seat are controlled to reciprocate along the axial direction of the sliding shaft under the screw connection relationship between the screw and the sliding seat, the exhaust hood is prevented from pumping the exhaust gas at one position, and the exhaust effect on the exhaust gas is effectively improved.
Description
Technical Field
The invention relates to the field of machining equipment, in particular to a tail gas treatment device for drying mechanical parts.
Background
In the current industrial production workshop, a lot of parts need to have the paint spraying process, some parts are dried naturally after spraying paint, and some parts need to be dried after spraying paint, get into stoving case or stoving assembly line after the paint spraying process, because the heating can produce waste gas such as benzene series thing and esters and become. The active carbon adsorption method is a common waste gas treatment method, and organic gas molecules are adsorbed to the surface of the waste gas by utilizing porous active carbon, diatomite, anthracite and the like, so that the waste gas is purified, the purification rate is high (the adsorption of the active carbon can reach more than 95 percent), the method is practical and comprehensive, the operation is simple, and the investment is low.
In the drying process of a drying box in the traditional drying equipment, the sealing performance of the drying box needs to be ensured, and the harmful tail gas after drying is prevented from overflowing and leaking to cause the pollution of a workshop; in traditional drying box, because the fixed setting of extraction opening, can not effectual harmful waste gas with drying box inside discharges fast.
Disclosure of Invention
The invention aims to provide a tail gas treatment device for drying mechanical parts, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the tail gas treatment device for drying the mechanical parts comprises a material conveying rack and an oven, wherein supporting legs are arranged below two ends of the material conveying rack, a roller way is arranged on the material conveying rack, the oven is arranged in the middle of the material conveying rack, the material conveying rack penetrates through the middle of the oven, and material ports are formed in two side walls of the oven and above the roller way; a heating plate is arranged in the oven and below the roller way, and the middle part of the heating plate is formed by arranging a plurality of heating pipes in a horizontal direction; the bottom of oven is provided with the intake pipe, and the branch is taken over in the branch and is had many takeoffs in the intake pipe, and the bottom that the takeover runs through the oven runs through to the inside of oven, and the upper end of takeover is provided with the blowing cover, and the one end of intake pipe is connected with the fan.
Preferably, a baffle is arranged on the outer side close to the material opening, and the two sides of the baffle are slidably clamped in a sliding rail fixed on the outer side of the oven.
Preferably, the outer wall of the upper end of the baffle is integrally formed with a limiting seat, a limiting pin rod is inserted along the outer end of the limiting seat, and a limiting hole corresponding to the limiting pin rod is formed above the side wall of the oven.
Preferably, the inside of spacing seat is the bullet chamber, and the part that spacing pin pole is located the bullet chamber is equipped with the snap ring, and is connected with reset spring between snap ring and the bullet chamber.
Preferably, a sliding shaft is connected between the upper portions of the inner walls of the two sides of the oven, a sliding seat is connected to the sliding shaft in a sliding manner, an exhaust hood is fixedly connected to the bottom of the sliding seat, an exhaust pipe is connected to the upper end of the exhaust hood, the exhaust pipe penetrates out of the middle portion of the top wall of the oven, the upper end of the exhaust pipe is connected with an air exhaust interface of an air exhaust pump, and an exhaust joint of the air exhaust pump is connected with a tail gas treatment assembly.
Preferably, a screw rod parallel to the sliding shaft is rotatably connected between the two side walls of the oven, and the screw rod is in threaded connection with the sliding seat.
Preferably, one end of the screw is connected with an output shaft of the motor, and the motor is fixed on the outer side wall of the oven through a bolt.
Preferably, the tail gas treatment assembly comprises an outer barrel connected with the air pump, an inner core barrel is arranged inside the outer barrel in a matched and sleeved mode, the other end port of the outer barrel is connected with a barrel cover through threads, and a pipe joint is arranged on the barrel cover.
Preferably, the partition blade formed by spirally coiling is welded on the inner wall of the inner core cylinder, and a channel between the inner cavity of the inner core cylinder and the partition blade is filled with activated carbon filler.
Preferably, an observation window is formed in one side of the oven, a sliding window is arranged at an outer port close to the observation window, the sliding window is in sliding connection with a pair of sliding window rails which are fixed on the outer side wall of the oven and horizontally arranged, and a handle is arranged at one end of the sliding window.
The invention has the technical effects and advantages that:
1. according to the invention, the limit pin rod arranged at the upper end of the baffle is pulled, so that the limit pin rod is separated from the limit hole formed in the outer wall of the oven, the baffle can be lowered to seal the material port, the sealing effect in the oven is ensured, and the tail gas is prevented from overflowing during drying;
2. according to the exhaust hood, after exhaust gas is generated in the oven, the exhaust pump is used for pumping the exhaust gas, the exhaust gas in the oven is sucked into the exhaust gas treatment assembly through the exhaust hood, the screw is driven through the motor, and the sliding seat and the exhaust hood fixed at the bottom of the sliding seat are controlled to reciprocate along the axial direction of the sliding shaft under the screw connection relationship between the screw and the sliding seat, so that the exhaust hood is prevented from pumping the exhaust gas at one position, and the exhaust effect on the exhaust gas is effectively improved;
3. according to the invention, after the exhaust gas enters the exhaust gas treatment assembly, the inner core cylinder is divided into the spiral channels by the partition blades, and the channels between the inner cavity of the inner core cylinder and the partition blades are filled with the activated carbon filler, so that the time of the exhaust gas flowing through the inner core cylinder is prolonged, and the adsorption effect of the activated carbon filler on harmful substances in the exhaust gas is effectively improved.
Drawings
Fig. 1 is a partial cross-sectional view of a three-dimensional structure of the present invention.
Fig. 2 is a front cross-sectional view of the structure of the present invention.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is an enlarged view at B in fig. 2.
Fig. 5 is a schematic perspective view of the present invention.
In the figure: 1. a material conveying rack; 2. a roller bed; 3. an oven; 301. a material port; 4. a baffle plate; 5. a slide rail; 6. a limiting seat; 601. a limit pin rod; 602. a snap ring; 603. a return spring; 7. heating plates; 701. heating a tube; 8. an air inlet pipe; 801. a connection pipe is connected; 802. a blowing hood; 9. a fan; 10. a slide shaft; 11. a slide base; 12. an exhaust hood; 13. an exhaust pipe; 14. an air pump; 15. a tail gas treatment component; 16. a screw; 17. a motor; 18. an outer cylinder; 181. a cylinder cover; 182. a pipe joint; 19. an inner core barrel; 20. separating leaves; 21. an activated carbon filler; 22. an observation window; 23. a sliding window; 24. a sliding window track; 25. and (4) carrying out handle.
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.
The invention provides a tail gas treatment device for drying mechanical parts, which comprises a material conveying rack 1 and an oven 3, wherein support legs are arranged below two ends of the material conveying rack 1 for supporting, a roller way 2 is arranged on the material conveying rack 1, the oven 3 is arranged in the middle of the material conveying rack 1, the material conveying rack 1 penetrates through the middle of the oven 3, material ports 301 are formed in two side walls of the oven 3 and above the roller way 2 and used for conveying in and out of processed parts, a heating plate 7 is arranged in the oven 3 and below the roller way 2, the middle of the heating plate 7 is formed by arranging a plurality of heating pipes 701 in the horizontal direction, and the heating plate 7 heats the heating pipes 701 through connecting a power supply so as to heat and dry the mechanical parts conveyed on the roller way 2.
As shown in fig. 2, the bottom of oven 3 is provided with intake pipe 8, the branch has many takeover 801 on the intake pipe 8, and the bottom that takeover 801 runs through oven 3 runs through to the inside of oven 3, the one end of intake pipe 8 is connected with fan 9, supply air to intake pipe 8 through fan 9, make gaseous upwards blow along a plurality of takeover 801, upwards blow the heat that hot plate 7 produced, effectively improve drying efficiency, the upper end of takeover 801 is provided with blows cover 802, can increase the scope of blowing, guarantee that the heat evenly upwards leads and send.
Referring to fig. 1 and 2, a baffle 4 is disposed closely to the outer side of the material opening 301, the baffle 4 is used for shielding the material opening 301, two sides of the baffle 4 are slidably clamped in a slide rail 5 fixed on the outer side of the oven 3, when drying, the baffle 4 is slid down to seal the material opening 301, when feeding or discharging, the baffle 4 is slid up to open the material opening 301, as shown in fig. 1, 2 and 3, a limiting seat 6 is integrally formed on the outer wall of the upper end of the baffle 4, a limiting pin 601 is inserted along the outer end of the limiting seat 6, a limiting hole corresponding to the limiting pin 601 is disposed above the side wall of the oven 3, when the baffle 4 is pulled up, the inner end of the limiting pin 601 is inserted into the limiting hole to fix the baffle 4, wherein the inner part of the limiting seat 6 is an elastic cavity, a snap ring 602 is disposed on the part of the limiting pin 601 located in the elastic cavity, and a reset spring 603 is connected between the snap ring 602 and the elastic cavity, only need pull to spacing pin 601, can make spacing pin 601 break away from with spacing hole, it is also comparatively convenient when spacing pin 601 inserts.
As shown in fig. 2, a sliding shaft 10 is connected between the upper portions of the inner walls of the two sides of the oven 3, a sliding seat 11 is connected to the sliding shaft 10 in a sliding manner, a bottom fixedly connected with exhaust hood 12 of the sliding seat 11, an exhaust pipe 13 is connected to the upper end of the exhaust hood 12, the exhaust pipe 13 penetrates through the middle portion of the top wall of the oven 3, an air suction interface of an air suction pump 14 is connected to the upper end of the exhaust pipe 13, an exhaust joint of the air suction pump 14 is connected with a tail gas treatment assembly 15, air suction work is performed through the air suction pump 14, and tail gas inside the oven 3 is sucked into the tail gas treatment assembly 15 through the exhaust hood 12.
As shown in fig. 2, a screw 16 parallel to the sliding shaft 10 is rotatably connected between two side walls of the oven 3, the screw 16 is screwed with the sliding seat 11, one end of the screw 16 is connected with an output shaft of the motor 17, the motor 17 is fixed on the outer side wall of the oven 3 through a bolt, the screw 16 is driven by the motor 17, and the sliding seat 11 and the exhaust hood 12 fixed at the bottom of the sliding seat 11 are controlled to reciprocate along the axial direction of the sliding shaft 10 under the screwing relationship of the screw 16 and the sliding seat 11, so that the exhaust hood 12 is prevented from extracting tail gas at only one position, and the exhaust effect on the tail gas is effectively improved.
Referring to fig. 1, 2 and 4, the tail gas treatment assembly 15 includes an outer cylinder 18 connected with the air pump 14, the outer cylinder 18 is internally fitted and sleeved with an inner core cylinder 19, the inner wall of the inner core cylinder 19 is welded with a separation blade 20 formed by spirally winding, the inner core cylinder 19 is internally separated into spiral channels by the separation blade 20, the channels between the inner cavity of the inner core cylinder 19 and the separation blade 20 are filled with activated carbon fillers 21, such arrangement improves the time of tail gas flow passing through the inner core cylinder 19, effectively improves the adsorption effect of the activated carbon fillers 21 on harmful substances in the tail gas, the other port of the outer cylinder 18 is connected with a cylinder cover 181 through threads, the inner core cylinder 19 is conveniently detached and replaced, the cylinder cover 181 is provided with a pipe joint 182, the pipe joint 182 is used for connecting an exhaust pipe, and the treated tail gas is led out.
As shown in fig. 5, an observation window 22 is opened at one side of the oven 3, a sliding window 23 is arranged at an outer port close to the observation window 22, the sliding window 23 is slidably connected with a pair of sliding window rails 24 which are fixed on an outer side wall of the oven 3 and horizontally arranged, a handle 25 is arranged at one end of the sliding window 23, when mechanical parts of the oven 3 need to be adjusted, the sliding window 23 can be shifted through the handle 25 to open the observation window 22, during a drying process, the sliding window 23 needs to seal the observation window 22, and the internal condition of the oven 3 can be observed along the observation window 22.
The working principle of the invention is as follows:
when the material conveying device is used, mechanical parts are conveyed to the inside of the oven 3 through the roller way 2 on the material conveying rack 1, the limiting pin rod 601 arranged at the upper end of the baffle 4 is pulled at the moment, and the limiting pin rod 601 is separated from the limiting hole formed in the outer wall of the oven 3, so that the baffle 4 can be lowered to seal the material opening 301, the sealing effect in the oven 3 is ensured, and the tail gas is prevented from overflowing during drying;
then, the heating plate 7 at the bottom of the inner cavity of the oven 3 is connected with a power supply, so that the heating pipe 701 generates heat, and meanwhile, the fan 9 is controlled to supply air to the air inlet pipe 8, so that the air is blown upwards along the plurality of branched pipes 801, the heat generated by the heating plate 7 is blown upwards, and the drying efficiency is effectively improved;
after waste gas is generated in the oven 3, the waste gas in the oven 3 is sucked into the tail gas treatment component 15 through the exhaust hood 12, meanwhile, the screw 16 is driven through the motor 17, and under the screw connection relationship between the screw 16 and the sliding seat 11, the sliding seat 11 and the exhaust hood 12 fixed at the bottom of the sliding seat 11 are controlled to reciprocate along the axial direction of the sliding shaft 10, so that the exhaust hood 12 is prevented from extracting the tail gas at one position, and the exhaust effect of the tail gas is effectively improved;
when waste gas enters the tail gas treatment assembly 15, the inner core cylinder 19 is separated into a spiral channel by the partition blade 20, and the channel between the inner cavity of the inner core cylinder 19 and the partition blade 20 is filled with the activated carbon filler 21, so that the time of tail gas flowing through the inner core cylinder 19 is prolonged, and the adsorption effect of the activated carbon filler 21 on harmful substances in the tail gas is effectively improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a tail gas processing apparatus of machine part stoving usefulness, includes fortune material frame (1) and oven (3), its characterized in that: supporting legs are arranged below two ends of the material conveying rack (1), a roller way (2) is arranged on the material conveying rack (1), an oven (3) is arranged in the middle of the material conveying rack (1), the material conveying rack (1) penetrates through the middle of the oven (3), and material openings (301) are formed in two side walls of the oven (3) and above the roller way (2); a heating plate (7) is arranged in the oven (3) and below the roller way (2), and the middle part of the heating plate (7) is formed by arranging a plurality of heating pipes (701) in a horizontal direction; an air inlet pipe (8) is arranged at the bottom of the oven (3), a plurality of branch pipes (801) are branched from the air inlet pipe (8), the branch pipes (801) penetrate through the bottom of the oven (3) to the inside of the oven (3), an air blowing cover (802) is arranged at the upper ends of the branch pipes (801), and one end of the air inlet pipe (8) is connected with a fan (9); a sliding shaft (10) is connected between the upper parts of the inner walls of the two sides of the oven (3), a sliding seat (11) is connected on the sliding shaft (10) in a sliding manner, an exhaust hood (12) is fixedly connected to the bottom of the sliding seat (11), an exhaust pipe (13) is connected to the upper end of the exhaust hood (12), the exhaust pipe (13) penetrates out along the middle part of the top wall of the oven (3), the upper end of the exhaust pipe (13) is connected with an air extraction interface of an air extraction pump (14), and an exhaust joint of the air extraction pump (14) is connected with a tail gas treatment assembly (15); the tail gas treatment assembly (15) comprises an outer barrel (18) connected and communicated with the air pump (14), an inner core barrel (19) is fittingly sleeved inside the outer barrel (18), the other end of the outer barrel (18) is connected with a barrel cover (181) through threads, and a pipe joint (182) is arranged on the barrel cover (181); the inner wall of the inner core cylinder (19) is welded with a separation blade (20) formed by spirally coiling, and a channel between the inner cavity of the inner core cylinder (19) and the separation blade (20) is filled with activated carbon filler (21).
2. The tail gas treatment device for drying the mechanical parts according to claim 1, which is characterized in that: and a baffle (4) is arranged on the outer side close to the material opening (301), and two sides of the baffle (4) are slidably clamped in a sliding rail (5) fixed on the outer side of the oven (3).
3. The tail gas treatment device for drying the mechanical parts according to claim 2, characterized in that: the upper end outer wall of the baffle (4) is integrally formed with a limiting seat (6), a limiting pin rod (601) is inserted along the outer end of the limiting seat (6), and a limiting hole corresponding to the limiting pin rod (601) is formed above the side wall of the oven (3).
4. The tail gas treatment device for drying the mechanical parts according to claim 3, characterized in that: the inside of spacing seat (6) is the bullet chamber, and the part that spacing pin pole (601) are located the bullet chamber is equipped with snap ring (602), and is connected with reset spring (603) between snap ring (602) and the bullet chamber.
5. The tail gas treatment device for drying the mechanical parts according to claim 1, which is characterized in that: a screw rod (16) parallel to the sliding shaft (10) is rotatably connected between the two side walls of the oven (3), and the screw rod (16) is in threaded connection with the sliding seat (11).
6. The tail gas treatment device for drying the mechanical parts according to claim 5, characterized in that: one end of the screw rod (16) is connected with an output shaft of the motor (17), and the motor (17) is fixed on the outer side wall of the oven (3) through a bolt.
7. The tail gas treatment device for drying the mechanical parts according to claim 1, which is characterized in that: an observation window (22) is formed in one side of the oven (3), a sliding window (23) is arranged at an outer port close to the observation window (22), the sliding window (23) is connected with a pair of sliding window rails (24) which are fixed on the outer side wall of the oven (3) and horizontally arranged in a sliding mode, and a handle (25) is arranged at one end of the sliding window (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010777780.6A CN111854391B (en) | 2020-08-05 | 2020-08-05 | Tail gas treatment device for drying mechanical parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010777780.6A CN111854391B (en) | 2020-08-05 | 2020-08-05 | Tail gas treatment device for drying mechanical parts |
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| Publication Number | Publication Date |
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| CN111854391A CN111854391A (en) | 2020-10-30 |
| CN111854391B true CN111854391B (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010777780.6A Active CN111854391B (en) | 2020-08-05 | 2020-08-05 | Tail gas treatment device for drying mechanical parts |
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| CN113639542B (en) * | 2021-08-03 | 2023-03-10 | 广东大合为智能装备有限公司 | Energy-efficient rail mounted lithium cell oven |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205676649U (en) * | 2016-06-08 | 2016-11-09 | 石狮市祥华集团有限公司 | Dryer exhaust gas processing device |
| CN207138239U (en) * | 2017-12-26 | 2018-03-27 | 合肥星河模具有限公司 | A kind of machine tooling mechanical fitting drying unit |
| CN208520159U (en) * | 2018-05-21 | 2019-02-19 | 泰山石膏(福建)有限公司 | Drying device is used in a kind of processing of Thistle board |
| CN208771154U (en) * | 2018-09-10 | 2019-04-23 | 江西尚绿科技有限公司 | A kind of Activated Carbon Production tail gas treatment device |
| CN211134906U (en) * | 2019-10-14 | 2020-07-31 | 湖北创美实验室设备有限公司 | Multifunctional atom absorption cover |
-
2020
- 2020-08-05 CN CN202010777780.6A patent/CN111854391B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205676649U (en) * | 2016-06-08 | 2016-11-09 | 石狮市祥华集团有限公司 | Dryer exhaust gas processing device |
| CN207138239U (en) * | 2017-12-26 | 2018-03-27 | 合肥星河模具有限公司 | A kind of machine tooling mechanical fitting drying unit |
| CN208520159U (en) * | 2018-05-21 | 2019-02-19 | 泰山石膏(福建)有限公司 | Drying device is used in a kind of processing of Thistle board |
| CN208771154U (en) * | 2018-09-10 | 2019-04-23 | 江西尚绿科技有限公司 | A kind of Activated Carbon Production tail gas treatment device |
| CN211134906U (en) * | 2019-10-14 | 2020-07-31 | 湖北创美实验室设备有限公司 | Multifunctional atom absorption cover |
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