CN217165726U - Efficient purification lower air exhaust type ventilation cabinet - Google Patents
Efficient purification lower air exhaust type ventilation cabinet Download PDFInfo
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- CN217165726U CN217165726U CN202220258225.7U CN202220258225U CN217165726U CN 217165726 U CN217165726 U CN 217165726U CN 202220258225 U CN202220258225 U CN 202220258225U CN 217165726 U CN217165726 U CN 217165726U
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Abstract
The utility model relates to a lower exhaust type fume chamber of high-efficient purification, it includes down the cabinet and the fixed last cabinet that sets up under on the cabinet, the cabinet top is equipped with the operation panel down, upward be equipped with the cabinet chamber that supplies the experiment operation in the cabinet, upward fixedly on the cabinet lateral wall be provided with negative-pressure tank, negative-pressure tank be equipped with the chamber of admitting air of cabinet chamber intercommunication, with the chamber intercommunication of admitting air and the circuitous passageway that sets up from bottom to top, the negative-pressure tank top is provided with exhaust duct, exhaust duct with circuitous passageway top intercommunication, exhaust duct is provided with the fan that is used for forming the negative pressure environment. This application has the effect that purification efficiency is high, protection fan.
Description
Technical Field
The application relates to the field of fume hoods, in particular to a lower exhaust type fume hood with high-efficiency purification.
Background
A fume hood, also called as fume hood, is a large-scale device in laboratories, especially chemical laboratories. In daily experiments, toxic and harmful gas and smoke can be generated, and certain harm is caused to the health of laboratory personnel. Fume chamber can the efficient discharge smog, gas, provides a safe operating space for the experimenter in the at utmost, reduces the emergence probability of experimental accident.
Chinese patent with grant publication number CN203664322U discloses a fume hood, which comprises a sealing box, a sealing box cover and a ventilation pipe, wherein the sealing box comprises three sealing walls and an operation wall, the operation wall comprises an upper fixing layer and a lower movable layer, the inner side of the upper fixing layer is provided with a track, the lower side of the lower movable layer is provided with a rubber layer, the middle part of the lower movable layer is provided with an operation hole, a sealing curtain is arranged above the operation hole, a reagent bottle holder is arranged on the sealing wall connected with the operation wall, the ventilation pipe is provided with an adsorption layer and a fan, and toxic gas in the fume hood is timely discharged through the fan.
In view of the above-mentioned related art, the inventor believes that the fume hood containing corrosive toxic gases may pollute the atmosphere and corrode the fan when the fume hood is used.
SUMMERY OF THE UTILITY MODEL
In order to promote the purification efficiency to corruption, toxic gas, this application provides the lower exhaust formula fume chamber of high-efficient purification.
The application provides a pair of high-efficient lower exhaust type fume chamber that purifies adopts following technical scheme:
the utility model provides a high-efficient lower exhaust type fume chamber that purifies, includes cabinet and the fixed last cabinet that sets up under on the cabinet down, the cabinet top is equipped with the operation panel down, be equipped with the cabinet chamber that supplies the experiment operation in the last cabinet, the fixed negative pressure case that is provided with on the lateral wall of last cabinet, be equipped with in the negative pressure case with the chamber of admitting air of cabinet chamber intercommunication, with the chamber intercommunication of admitting air and circuitous passageway that sets up from bottom to top, the negative pressure roof portion is provided with exhaust duct, exhaust duct with circuitous passageway top intercommunication, exhaust duct is provided with the fan that is used for forming the negative pressure environment.
Through adopting above-mentioned technical scheme, when the experimenter carries out the experiment operation, the poisonous and harmful gas of production gets into the air inlet chamber in the negative-pressure tank under the effect of the inside and outside pressure differential of cupboard chamber and negative-pressure tank, then remove along circuitous passageway from bottom to top, in transportation process, gas cools off gradually, corrosive substance wherein falls to the bottom of negative-pressure tank along with the condensate liquid drop, remaining gas is discharged through exhaust duct, reduce the probability that corrosive substance produced the harm to the fan, promote harmful gas's purification rate.
Optionally, an air inlet box is fixedly arranged in the negative pressure box, and a plurality of air inlet holes communicated with the cabinet cavity are formed in the side wall of the air inlet box.
Through adopting above-mentioned technical scheme, harmful gas in the cupboard intracavity assembles in getting into the inlet box through the inlet port under the negative pressure effect, promotes harmful gas's purification rate.
Optionally, the air inlet holes are uniformly arranged at intervals along the vertical direction.
Through adopting above-mentioned technical scheme, a plurality of inlet ports make harmful gas in the in-process that rises is inhaled the inlet box gradually, reduce the scattered probability of harmful gas for the toxic gas in the cabinet intracavity is in time discharged.
Optionally, a plurality of louver boards are fixedly arranged on the air inlet.
Through adopting above-mentioned technical scheme, a plurality of shutter plates can play fine reposition of redundant personnel, water conservancy diversion effect, reduce the anti probability that overflows of harmful gas in the inlet box, further promote the purification efficiency to harmful gas.
Optionally, an air distribution cavity is formed between the bottom wall of the air inlet box and the inner side wall of the bottom of the negative pressure box, an exhaust cavity is formed between the two side walls of the air inlet box and the inner side wall of the negative pressure box, and the air distribution cavity and the exhaust cavity form the circuitous channel.
Through adopting above-mentioned technical scheme, harmful gas in the inlet box gets into and divides the gas intracavity to shunt, then gets into the exhaust intracavity of both sides respectively and moves from bottom to top for steam in the gas condenses as early as possible, adsorbs the corrosive substance of absorption and falls to negative pressure tank bottom simultaneously, promotes harmful gas's purification efficiency, and protects the fan.
Optionally, a gas collecting box is fixedly arranged above the gas inlet box, the bottom of the gas collecting box is communicated with the exhaust cavity, and the exhaust pipeline is communicated with the gas collecting box.
Through adopting above-mentioned technical scheme, the gas collection case is collected the harmful gas after the reposition of redundant personnel purifies and is assembled, then discharges through exhaust duct, guarantees the experimental security in the cabinet intracavity.
Optionally, a liquid collecting tank is arranged on the bottom wall of the negative pressure tank.
By adopting the technical scheme, the liquid collecting tank can collect corrosive liquid drops falling during condensation in time, and subsequent treatment is facilitated.
Optionally, the liquid collecting tank is of a ladder platform type, a waste liquid bottle is fixedly arranged at the bottom of the negative pressure box, and a conduit is communicated between the waste liquid bottle and the liquid collecting tank.
Through adopting above-mentioned technical scheme, the collecting tank of halfpace type can play the effect that the guide was assembled to the corrosive liquid drop of negative pressure tank bottom, then in time flows into the waste liquid bottle through the pipe and does further innocent treatment.
Optionally, an air inlet pipeline is fixedly arranged on the inner side wall, far away from the negative pressure box, of the upper cabinet, and a plurality of air supply outlets are formed in the air inlet pipeline.
Through adopting above-mentioned technical scheme, in time send fresh clean air into the cupboard intracavity through the admission line, guarantee the air circulation of cupboard intracavity, supplementary negative pressure box is in time discharged harmful gas, maintains the cupboard intracavity harmful gas and is in lower concentration, guarantees experimenter's personal safety.
Optionally, a filter box is fixedly arranged at the top of the upper cabinet, and the air inlet pipeline is communicated with the filter box.
Through adopting above-mentioned technical scheme, the rose box can carry out prefiltration with the air that gets into in the inlet channel, gets rid of impurity wherein to reach the standard of clean wind.
In summary, the present application includes at least one of the following beneficial technical effects:
1. harmful gas in the cabinet cavity is subjected to shunting, condensation and adsorption treatment through the negative pressure box, so that corrosive substances are separated from other harmful gas, the purification efficiency of the harmful gas is improved, and meanwhile, a fan is well protected;
2. corrosive substances in the harmful gas are separated in time through the shunting and buffering condensation effects of the air distribution cavity and the exhaust cavity, so that the purification efficiency of the ventilation cabinet is further improved;
3. the generated corrosive liquid is collected through the liquid collecting tank and the waste liquid bottle, so that subsequent treatment is facilitated.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a negative pressure tank according to an embodiment of the present application.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
Description of reference numerals: 1. loading the cabinet; 11. a window; 12. a back plate; 13. a side plate; 14. an air intake duct; 15. a filter box; 2. a lower cabinet; 21. an operation table; 3. a negative pressure tank; 31. an air intake box; 32. an air inlet; 33. a louver board; 34. a liquid collecting tank; 35. a liquid discharge hole; 4. a gas collection tank; 5. a circuitous channel; 51. a gas distribution cavity; 52. an exhaust chamber; 6. an exhaust duct; 7. a fan; 8. a collection cabinet; 9. a waste liquid bottle; 91. a conduit.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses lower exhaust formula fume chamber of high-efficient purification can be used to laboratory daily test, and the efficient discharges away poisonous smog, gas, guarantees experimenter's personal safety.
Referring to fig. 1 and 2, the efficient purification lower exhaust type ventilation cabinet comprises an upper cabinet 1, a lower cabinet 2 and a negative pressure box 3, wherein the upper cabinet 1 is fixed at the top of the lower cabinet 2, and an operating platform 21 is arranged at the top of the lower cabinet 2 for experimenters to perform test work. The upper cabinet 1 comprises a window 11 arranged at the front part, a back plate 12 fixed at the back part and side plates 13 fixed at the two sides of the operating platform 21, and the space among the window 11, the back plate 12 and the two side plates 13 is a cabinet cavity for providing an operating space for an experiment. The negative pressure box 3 is internally provided with an air inlet cavity and a circuitous channel 5 communicated with the air inlet cavity, the top of the negative pressure box 3 is communicated with a fan 7, and a negative pressure environment is formed in the negative pressure box 3 through the fan 7. The chamber of admitting air communicates with the cupboard chamber to in inhaling the chamber of admitting air with the poisonous and harmful gas of cupboard intracavity, circuitous passageway 5 sets up from bottom to top, and the bottom of circuitous passageway 5 communicates with the bottom in chamber of admitting air, so that harmful gas can circulate from bottom to top, and purification efficiency is higher.
Referring to fig. 1 and 2, the negative pressure tank 3 has a rectangular tank structure, and one side of the negative pressure tank 3 in the width direction is hermetically fixed to the back plate 12. An air inlet box 31 is fixedly arranged in the negative pressure box 3, the air inlet box 31 is of a rectangular box structure, and an air inlet cavity is formed inside the air inlet box 31. The side wall of the air inlet box 31 facing the direction of the back plate 12 is provided with a plurality of air inlet holes 32, the air inlet holes 32 are rectangular strip holes, the air inlet holes 32 are horizontally arranged, and the air inlet holes 32 are uniformly arranged along the vertical direction at intervals. Suitably, the back plate 12 is also provided with an opening having the same size as the air inlet 32, so that the harmful gas can enter the air inlet box 31 through the air inlet 32. In addition, be fixed with a plurality of louvres 33 on the inlet port 32, a plurality of louvres 33 all set up with the interval along the width direction of inlet port 32 to, the quantity of inlet port 32 of this embodiment can be set for according to the user's demand, in order to reach better purification exhaust effect.
Referring to fig. 1 and 2, a distance is provided between the peripheral side wall of the air inlet box 31 and the inner side wall of the negative pressure box 3, two air exhaust cavities 52 are enclosed between the side wall of the air inlet box 31 in the width direction and the two inner side walls of the negative pressure box 3 in the width direction, an air distribution cavity 51 is enclosed between the bottom side wall of the air inlet box 31 and the inner side wall of the bottom of the negative pressure box 3, and the two air exhaust cavities 52 and the air distribution cavity 51 form a circuitous channel 5. The side wall of the bottom of the air inlet box 31 is provided with an opening communicated with the air distribution cavity 51, harmful gas in the air inlet box 31 firstly flows in the air inlet cavity, then flows into the air outlet cavities 52 on two sides after being distributed by the air distribution cavity 51, the harmful gas moves from bottom to top, corrosive substances such as acidity and alkalinity fall down along with condensation and adsorption of water vapor in the rising process, and the rest gas continuously rises under the action of negative pressure to reduce the corrosive effect of the corrosive substances in the harmful gas on fan blades 7.
Referring to fig. 1 and 2, a gas collecting box 4 is fixedly arranged above the gas inlet box 31, the top of the gas collecting box 4 is communicated with an exhaust pipeline 6, a fan 7 is arranged on the exhaust pipeline 6, and the free end of the exhaust pipeline 6 is communicated with the outside. The bottom side wall of the gas collection box 4 is communicated with the two exhaust cavities 52, and relatively clean gas is gathered in the gas collection box 4 and then exhausted to the outside through the exhaust pipeline 6.
Referring to fig. 2 and 3, the bottom of the negative pressure tank 3 is provided with a step-shaped bottom wall, the bottom wall of the step-shaped bottom wall forms a liquid collecting tank 34, and corrosive liquid condensed from harmful gas is collected in the liquid collecting tank 34. In addition, a collection cabinet 8 is fixed at the bottom of the negative pressure box 3, a waste liquid bottle 9 is arranged in the collection cabinet 8, a liquid discharge hole 35 is formed in the bottom wall of the liquid collection tank 34, a guide pipe 91 is communicated between the liquid discharge hole 35 and the bottle opening so as to guide corrosive liquid in the liquid collection tank 34 into the waste liquid bottle 9 for collection, and subsequent treatment is facilitated.
Referring to fig. 1, for further promoting purification efficiency, two curb plates 13 are close to the equal welded fastening of one end of window 11 and are had inlet duct 14, and a plurality of supply-air outlets have been seted up on inlet duct 14's the lateral wall towards the cupboard chamber to the vertical setting of inlet duct 14, and external fresh air sends into the cupboard intracavity through inlet duct 14 for the air flow speed in the cupboard chamber promotes the air quality. In addition, a filter box 15 is fixed on the top wall of the upper cabinet 1, the air inlet end of the air inlet pipeline 14 is communicated with the filter box 15, filter equipment such as activated carbon and filter cotton is arranged in the filter box 15, and outside air is filtered by the filter box 15 before entering the air inlet channel 14 to remove dust, particle impurities and the like, so that clean air is prepared for workers to perform dust-free experiments.
The implementation principle of the lower exhaust type fume chamber of this application embodiment that a high-efficient purification does: when using, send fresh air into the cupboard intracavity through supply air duct, the poisonous and harmful gas that produces in the experimentation gets into the inlet box 31 through inlet port 32 in, then shunt in flowing into gas distribution chamber 51, the gradual condensation in getting into exhaust chamber 52 after that, the material that contains corrosivity collects in the collecting tank 34 along with the condensate drippage, the gaseous exhaust duct 6 that passes through in the entering gas collection case 4 of remaining comparatively clean discharges, reduce corrosive substance and to the damage effect of fan 7, improve the purification efficiency of fume chamber.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a high-efficient lower exhaust formula fume chamber that purifies, includes cabinet (2) and fixed last cabinet (1) that sets up under on cabinet (2), cabinet (2) top is equipped with operation panel (21) down, be equipped with the cabinet chamber that supplies experiment operation in going up cabinet (1), its characterized in that: go up fixed negative pressure tank (3) that is provided with on cabinet (1) lateral wall, be equipped with in negative pressure tank (3) with the chamber of admitting air of cupboard chamber intercommunication, with the chamber intercommunication of admitting air and circuitous passageway (5) that set up from bottom to top, negative pressure tank (3) top is provided with exhaust duct (6), exhaust duct (6) with circuitous passageway (5) top intercommunication, exhaust duct (6) are provided with fan (7) that are used for forming negative pressure environment.
2. The efficient cleaned lower vented fumehood of claim 1 wherein: an air inlet box (31) is fixedly arranged in the negative pressure box (3), and a plurality of air inlet holes (32) communicated with the cabinet cavity are formed in the side wall of the air inlet box (31).
3. The efficient cleaned lower vented fumehood of claim 2 wherein: the air inlets (32) are uniformly arranged at intervals along the vertical direction.
4. The efficient cleaned lower vented fumehood of claim 3 wherein: a plurality of louver boards (33) are fixedly arranged on the air inlet hole (32).
5. The efficient cleaned lower vented fumehood of claim 2 wherein: an air distribution cavity (51) is formed between the bottom wall of the air inlet box (31) and the inner side wall of the bottom of the negative pressure box (3), exhaust cavities (52) are formed between the two side walls of the air inlet box (31) and the inner side wall of the negative pressure box (3) respectively, and the air distribution cavity (51) and the exhaust cavities (52) form the circuitous channel (5).
6. The efficient cleaned lower vented fumehood of claim 5 wherein: a gas collecting box (4) is fixedly arranged above the gas inlet box (31), the bottom of the gas collecting box (4) is communicated with the exhaust cavity (52), and the exhaust pipeline (6) is communicated with the gas collecting box (4).
7. The efficient cleaned lower vented fumehood of claim 1 wherein: and a liquid collecting tank (34) is arranged on the bottom wall of the negative pressure tank (3).
8. The efficient cleaned lower vented fumehood of claim 7 wherein: the liquid collecting groove (34) is in a ladder platform shape, a waste liquid bottle (9) is fixedly arranged at the bottom of the negative pressure box (3), and a guide pipe (91) is communicated between the waste liquid bottle (9) and the liquid collecting groove (34).
9. The efficient cleaned lower vented fumehood of claim 1 wherein: an air inlet pipeline (14) is fixedly arranged on the inner side wall, far away from the negative pressure box (3), of the upper cabinet (1), and a plurality of air supply outlets are formed in the air inlet pipeline (14).
10. The efficient cleaned lower vented fumehood of claim 9, wherein: go up cabinet (1) top fixed be provided with rose box (15), admission line (14) with rose box (15) intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220258225.7U CN217165726U (en) | 2022-02-08 | 2022-02-08 | Efficient purification lower air exhaust type ventilation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220258225.7U CN217165726U (en) | 2022-02-08 | 2022-02-08 | Efficient purification lower air exhaust type ventilation cabinet |
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| CN217165726U true CN217165726U (en) | 2022-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220258225.7U Active CN217165726U (en) | 2022-02-08 | 2022-02-08 | Efficient purification lower air exhaust type ventilation cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445686A (en) * | 2022-09-01 | 2022-12-09 | 青岛康禾园绿色食品有限公司 | Meat nutrient composition check out test set |
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2022
- 2022-02-08 CN CN202220258225.7U patent/CN217165726U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445686A (en) * | 2022-09-01 | 2022-12-09 | 青岛康禾园绿色食品有限公司 | Meat nutrient composition check out test set |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 1701, 17th Floor, Logistics Business Zone C, Zhengzhou International Inland Port Auto Port Park, Northwest Angle of the 18th Street and Jingbei 1st Road, Zhengzhou Area (Economic Development Zone), Henan Pilot Free Trade Zone, Zhengzhou City, 450000, Henan Province Patentee after: Henan Puleisi Purification Engineering Co.,Ltd. Address before: 450000 room 205, floor 20, building 1, No. 49, Jinshui East Road, Zhengzhou area (Zhengdong), Henan pilot Free Trade Zone, Zhengzhou City, Henan Province Patentee before: Henan pules purification Engineering Co.,Ltd. |
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| CP03 | Change of name, title or address |