CN114798660A

CN114798660A - Fume hood

Info

Publication number: CN114798660A
Application number: CN202210453157.4A
Authority: CN
Inventors: 许开华; 阚国锋; 唐洲; 白亮; 雷杰; 邵韦韦; 王文平
Original assignee: Fu'an Qingmei Energy Materials Co ltd
Current assignee: Fu'an Qingmei Energy Materials Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-07-29

Abstract

The invention relates to the field of chemical experiment devices, in particular to a fume hood which comprises a main body, an air draft cover arranged in the main body, a first pipeline connected with an air outlet of the air draft cover, an exhaust fan, a dust removal box, a dust collection filter bag, a second pipeline, a spray box, a spray head, a water delivery pipe, a third pipeline, an adsorption box and an exhaust pipe. By using the fume hood disclosed by the invention, the experimental waste gas is sucked away by the exhaust hood and does not return to the fume hood, so that the probability of contacting harmful gas by experimenters is reduced; the experimental waste gas is discharged into the air after being dedusted by the dedusting filter bag, sprayed by the spraying box for impurity removal and adsorbed by active carbon, so that the content of harmful substances in the experimental waste gas is greatly reduced, and the pollution to the outside air can be avoided; be provided with the dust removal case between fume hood inside and the outside air, spray a plurality of boxes of case and adsorption tank, each box can all play the effect of buffering, can effectively avoid the influence of interior outer difference in temperature to the experiment.

Description

Fume hood

Technical Field

The invention relates to the field of chemical experiment devices, in particular to a fume hood.

Background

The fume hood is widely applied to laboratories of various chemicals, medicines, foods and the like, and has the functions of reducing the contact of harmful gas or dust with experimenters and ensuring the safety and reliability of experiments.

In the prior art, the differences of fume hoods according to the principle of ventilation mainly include two types: the first type is a ductless ventilation type, after air is pumped by an exhaust fan at the front upper part in the cabinet, the air is firstly filtered and dedusted by foam plastic (the service life is about 6 months), and then filtered by active carbon (the service life is about 2 years), most chemical substances are adsorbed and recycled. The first type of fume hood has the advantages of no need of external connecting pipes, no pollution to the external environment, and the disadvantages of more possibility of contacting harmful gas for experimenters than the use of an air-extracting fume hood, and larger noise. The second type is a full ventilation type, and air is drawn away by an exhaust fan arranged at the front upper part in the cabinet and then is guided to other places through pipelines. The second kind of advantage is that can more effective harmful gas in the detached laboratory than the no pipe ventilation, and the noise is little, and it is convenient to maintain, and the shortcoming is that harmful gas directly discharges, pollutes the environment easily, and the ventilation pipe directly communicates outdoors in addition, probably hinders laboratory temperature balance under the different circumstances of indoor outer temperature.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a fume hood, which specifically comprises the following contents:

a fume hood comprises a main body, an air draft hood arranged in the main body, a first pipeline connected with an air outlet of the air draft hood, an exhaust fan, a dust removal box, a dust collection filter bag, a second pipeline, a spray box, a spray header, a water conveying pipe, a third pipeline, an adsorption box and an exhaust pipe, wherein the exhaust fan is arranged in the first pipeline and close to the air outlet of the air draft hood; the dust collection filter bag is arranged in the dust removal box; the dust removal box is provided with an air inlet and an air outlet, the air outlet of the first pipeline extends into the dust removal box from the air inlet of the dust removal box and is connected with the inlet of the dust removal filter bag, and the outer wall of the first pipeline is in seamless sealing connection with the edge of the air inlet of the dust removal box; the spray header is arranged in the spray box; the spraying box is provided with an air inlet, a water outlet, an air outlet and a water inlet, the air inlet of the spraying box is connected with the air outlet of the dust removal box through a second pipeline, the water outlet of the spraying box is arranged below the air inlet, a valve is arranged at the water outlet, the water inlet and the air outlet of the spraying box are arranged above the air inlet, the outside of the water inlet of the spraying box is connected with a water pipe, and the inside of the water inlet is connected with a spraying head; the adsorption box is provided with an air inlet and an air outlet, the air inlet of the adsorption box is connected with the air outlet of the spraying box through a third pipeline, the air outlet of the adsorption box is connected with the exhaust pipe, and the adsorption box is filled with adsorption substances.

Specifically, the dust collection filter bag is a cloth bag.

Specifically, the water outlet of the spraying box is arranged at the bottom of the spraying box, the water inlet of the spraying box is arranged at the top of the spraying box, and the air outlet of the spraying box is arranged at the side upper part of the spraying box.

Specifically, the air inlet of the adsorption tank is arranged at the bottom or the side lower part of the adsorption tank, and the air outlet of the adsorption tank is arranged at the top or the side upper part of the adsorption tank.

Specifically, the adsorption substance in the adsorption box is an activated carbon adsorbent.

Specifically, the adsorption material in the adsorption box fills the whole internal cavity of the adsorption box.

The invention has the beneficial effects that:

(1) the experimental waste gas is sucked away by the exhaust hood and does not return to the fume hood, so that the probability of contacting harmful gas by experimenters is reduced;

(2) the experimental waste gas is discharged into the air after being dedusted by the dedusting filter bag, sprayed by the spraying box for impurity removal and adsorbed by active carbon, so that the content of harmful substances in the experimental waste gas is greatly reduced, and the pollution to the outside air can be avoided;

(3) be provided with the dust removal case between fume hood inside and the outside air, spray a plurality of boxes of case and adsorption tank, each box can all play the effect of buffering, and the fume hood inside air and external environment do not directly communicate with each other, have reduced the influence of ambient temperature to the fume hood inside temperature, can effectively avoid the influence of the interior outer difference in temperature to the experiment.

Drawings

Fig. 1 is a schematic view of a fume hood according to the present disclosure.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments shown below do not limit the inventive content described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

A fume hood comprises a main body 1, an air draft hood 2 arranged in the main body, a first pipeline 4 connected with an air outlet of the air draft hood 2, an exhaust fan 3, a dust removal box 5, a dust collection filter bag 6, a second pipeline 7, a spray box 16, a spray head 9, a water delivery pipe 8, a third pipeline 10, an adsorption box 11 and an exhaust pipe 13, wherein the exhaust fan 3 is arranged in the first pipeline 4 and close to the air outlet of the air draft hood 2; the dust collection filter bag 6 is arranged inside the dust removal box 5; an air inlet and an air outlet are formed in the dust removal box 5, the air outlet of the first pipeline 4 extends into the dust removal box 5 from the air inlet of the dust removal box 5 and is connected with the inlet of the dust removal filter bag 6, and the outer wall of the first pipeline 4 is in seamless sealing connection with the edge of the air inlet of the dust removal box 5; the spray header 9 is arranged in the spray box 16; an air inlet, a water outlet 15, an air outlet and a water inlet are formed in the spray box 16, the air inlet of the spray box 16 is connected with the air outlet of the dust removal box 5 through a second pipeline 7, the water outlet 15 of the spray box 16 is arranged below the air inlet, a valve 14 is arranged at the position of the water outlet 15, the water inlet and the air outlet of the spray box 16 are arranged above the air inlet, the outer portion of the water inlet of the spray box 16 is connected with a water delivery pipe 8, and the inner portion of the water inlet is connected with a spray header 9; an air inlet and an air outlet are arranged on the adsorption box 11, the air inlet of the adsorption box 11 is connected with the air outlet of the spray box 16 through a third pipeline 10, the air outlet of the adsorption box 11 is connected with an exhaust pipe 13, and adsorption substances are filled in the adsorption box 11.

In one embodiment of the present invention, the dust collecting filter bag 6 is a cloth bag.

In one embodiment of the present invention, the water outlet of the shower box 16 is disposed at the bottom of the shower box 16, the water inlet of the shower box 16 is disposed at the top of the shower box 16, and the air outlet of the shower box 16 is disposed at the upper side of the shower box 16.

In an embodiment of the present invention, the air inlet of the adsorption box 11 is disposed at the bottom or lower side of the adsorption box 11, and the air outlet of the adsorption box 11 is disposed at the top or upper side of the adsorption box 11.

In one embodiment of the present invention, the adsorbent in the adsorption tank 11 is activated carbon adsorbent.

In one embodiment of the present invention, the adsorbent in the adsorption box 11 fills the whole internal cavity of the adsorption box 11.

By using the fume hood provided by the invention, the experimental waste gas is sucked away by the air draft cover 2 and does not return to the fume hood, so that the probability of contacting harmful gas by experimenters is reduced; the experimental waste gas is dedusted by the dedusting filter bag 6, sprayed by the spraying box 16 to remove impurities and adsorbed by active carbon and then is discharged into the air, so that the content of harmful substances in the experimental waste gas is greatly reduced, and the pollution to the outside air can be avoided; in addition, be provided with dust removal case 5, spray box 16 and a plurality of boxes of adsorption box 11 between the inside and the outside air of fume hood, each box can all play the effect of buffering, and the inside air of fume hood and external environment do not directly communicate with each other, have reduced the influence of ambient temperature to the inside temperature of fume hood, can effectively avoid the influence of the interior outer difference in temperature to the experiment.

In the description of the present application, it is to be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fume hood comprises a main body, a fume hood arranged in the main body, and a first pipeline connected with an air outlet of the fume hood, and is characterized by further comprising an exhaust fan, a dust removal box, a dust collection filter bag, a second pipeline, a spray box, a spray head, a water delivery pipe, a third pipeline, an adsorption box and an exhaust pipe, wherein the exhaust fan is arranged in the first pipeline and close to the air outlet of the fume hood; the dust collection filter bag is arranged in the dust removal box; the dust removal box is provided with an air inlet and an air outlet, the air outlet of the first pipeline extends into the dust removal box from the air inlet of the dust removal box and is connected with the inlet of the dust removal filter bag, and the outer wall of the first pipeline is in seamless sealing connection with the edge of the air inlet of the dust removal box; the spray header is arranged in the spray box; the spraying box is provided with an air inlet, an air outlet and a water inlet, the air inlet of the spraying box is connected with the air outlet of the dust removal box through a second pipeline, the water outlet of the spraying box is arranged below the air inlet, a valve is arranged at the water outlet, the water inlet and the air outlet of the spraying box are arranged above the air inlet, the outer part of the water inlet of the spraying box is connected with a water conveying pipe, and the inner part of the water inlet is connected with a spraying head; the adsorption box is provided with an air inlet and an air outlet, the air inlet of the adsorption box is connected with the air outlet of the spraying box through a third pipeline, the air outlet of the adsorption box is connected with the exhaust pipe, and the adsorption box is filled with adsorption substances.

2. A fume hood according to claim 1 wherein said dust collection filter bag is a cloth bag.

3. A fume hood according to claim 1 wherein the outlet of the spray box is located at the bottom of the spray box, the inlet of the spray box is located at the top of the spray box, and the outlet of the spray box is located at the upper side of the spray box.

4. The fume hood as claimed in claim 1, wherein the air inlet of the adsorption box is disposed at the bottom or lower side portion of the adsorption box, and the air outlet of the adsorption box is disposed at the top or upper side portion of the adsorption box.

5. A fume hood according to claim 1 wherein the adsorbent material in the adsorbent box is activated carbon adsorbent.

6. A fume hood according to any one of claims 1-5 wherein the adsorbent material in the adsorbent box fills the entire interior volume of the adsorbent box.