CN216092888U - Laboratory is with cabinet of airing exhaust - Google Patents

Abstract

The utility model discloses an exhaust cabinet for a laboratory, aiming at the problem that collected harmful gas can enter an exhaust system, and the harmful gas is possibly leaked or crystallized and accumulated in the exhaust pipeline due to the streaming in the exhaust system, so as to cause other adverse effects on personnel, the utility model provides the following technical scheme that a cabinet body is provided with an exhaust port, a workbench, a water filtering component, a purifying pipeline component, an exhaust fan and an air collecting duct are arranged in the cabinet body, the structure is that the harmful gas or chemical gas generated inside the exhaust cabinet is purified and filtered by arranging a plurality of filtering devices in the cabinet body and then is exhausted to the exhaust system outside a laboratory, and the exhaust cabinet has the technical effects of limiting external gas from entering the laboratory, automatically cleaning and filtering the gas and neutralizing crystalline solids in the waste gas, has the advantages of improving the gas quality and purifying harmful gases.

Description

Laboratory is with cabinet of airing exhaust

Technical Field

The utility model relates to the field of laboratory exhaust systems, in particular to an exhaust cabinet for a laboratory.

Background

The fume hood mainly has an exhaust function, various harmful gases, odor, moisture and flammable, explosive and corrosive substances are generated in the experiment operation in a chemical laboratory, and the fume hood is used near a pollution source in order to protect the safety of a user and prevent the diffusion of the pollutants in the experiment to the laboratory.

At present, Chinese patent with application number 202022275823.9 discloses an exhaust cabinet of an electrothermal blowing drying box for a laboratory, which comprises a cabinet body, wherein the front side of the cabinet body is provided with an opening, and the opening is provided with two doors; a bottom plate of the cabinet body is provided with a plurality of air inlet holes; the top of the cabinet body is provided with an air exhaust round hole; the top of the air exhaust round hole is provided with an air exhaust cover; the exhaust hood is connected with an exhaust pipe, and an exhaust fan is arranged in the exhaust pipe or the exhaust pipe is connected with an exhaust system of a laboratory. The utility model is convenient to use, is convenient to extract heat, peculiar smell or harmful gas emitted by the sample heated by the electric heating blast box, avoids the peculiar smell, the harmful gas and the heat emitted in the sample heating process of the electric heating blast drying box from diffusing into a laboratory, and effectively ensures that indexes such as temperature, humidity, cleanliness and the like in the laboratory reach the standard.

Although the laboratory electric heating air blowing drying box exhaust cabinet can extract heat, harmful gas and the like generated by heating a sample, the collected harmful gas can enter an exhaust system, the possibility that the harmful gas leaks or crystals are accumulated in an exhaust pipeline due to the bypass flow in the exhaust system exists, and personnel can inhale the gas to generate discomfort or the harmful gas is accumulated to generate other adverse effects such as explosion and the like, so that the laboratory electric heating air blowing drying box exhaust cabinet has room for improvement.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the exhaust cabinet for the laboratory, which meets the technical effects of automatic cleaning and filtering, neutralizes crystallizable substances in waste gas and has the advantages of improving the gas quality and purifying harmful gas through the structure.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a laboratory is with cabinet of airing exhaust, includes the cabinet body, install two divisions of doors on the cabinet body, the gas vent has been seted up to the cabinet body, still install workstation, water filter component, purifying pipe subassembly, air exhauster and gas collection wind channel in the cabinet body, the gas collection wind channel is arranged around the workstation and with water filter component and air exhauster intercommunication, install the filter in the gas collection wind channel, water filter component and air exhauster are installed in the workstation below, hold chemical reagent in the water filter component, newly happy filter component installs the fiber filter screen, purifying pipe subassembly and water filter component and gas vent intercommunication.

By adopting the technical scheme, the device is an exhaust cabinet applied to a laboratory, and therefore, the device needs to have certain capacity of storing and being suitable for experimental environment, a workbench is installed in a cabinet body, the gas collecting air channel arranged around the workbench is used for collecting chemical gas generated in the experiment, the collected chemical gas enters the water filtering component through the gas collecting air channel under the action of the exhaust fan, a filter is installed in the gas collecting air channel and can effectively filter a part of large-particle crystals to keep the exhaust fan clean, the water filtering component removes crystal grains in most gas through chemical reagents contained in the water filtering component and neutralizes the acidity and alkalinity of the gas, then the gas after treatment enters the purification pipeline component, the purification pipeline component filters water vapor and excessive acid and alkali components contained in the gas through the fiber filter screen, and enables the nearly dry gas to flow into an exhaust system outside the laboratory, water filtering component still has the effect of current-limiting in this device, makes during the gaseous exhaust cabinet that can not reverse inflow among the exhaust system, and this scheme makes it through water filtering component and purifying duct subassembly in order to satisfy self-cleaning, filterable technological effect through air exhauster and collection gas channel guide gas flow, but gaseous crystal body in the water filtering component meeting closes waste gas reaches improvement gas quality, purifies harmful gas's technical requirement.

Further, be provided with the test tube storage box on the workstation, the test tube storage box intercommunication the gas collection wind channel.

Adopt above-mentioned technical scheme, in the chemistry experiment, through setting up the experiment test tube that test tube storage box body stored a certain amount, open the test tube of inside storage a certain amount of chemical reagent when needs, the test tube that uses can produce a certain amount of gas when opening, thereby the test tube storage box makes the chemical gas who produces get into in the gas collection wind channel and protects it and volatilize when the test tube is opened, has the advantage of avoiding causing harmful effects.

Further, the water filtering component comprises a water filtering tank and a communicating pipeline, and the communicating pipeline penetrates through the water filtering tank and is communicated with the purifying pipeline component.

Adopt above-mentioned technical scheme, the gas that the gas collection tuber pipe gathered enters into water filtering ponds through the air exhauster, add chemical reagent in the water filtering ponds, make the gaseous chemical reaction that takes place through here, make gaseous acid-base nature and partial crystallizable granule filtered, the gas that filters the completion enters into the filter tube and carries out next step, water filtering ponds enable the air current in the exhaust system outside the laboratory can not get into by this exhaust hood and discharge into the laboratory, above-mentioned structure has the technological effect of harmful substance and crystal in the purification filtration gas.

Further, water filtering component still is provided with reagent and adds device and drain pipe, the setting of cabinet body is run through to reagent interpolation device, water filtering ponds installation drain pipe and with reagent adds the device intercommunication.

Adopt above-mentioned technical scheme, chemical reagent and the water in the water filter tank need be changed at intervals, chemical reagent mixes other gaseous molecules and can produce harmful gas consequently and the water filter tank is seal structure, change the liquid in the enclosed construction for the convenience, carry out chemical reagent's interpolation in the reagent interpolation device to the water filter tank through setting up the link up cabinet body, and change for making things convenient for the liquid in the water filter tank, water filter tank installation drain pipe, above-mentioned structure carries out the change of water to its inside under the condition of not opening the water filter tank, have the improvement and change efficiency, promote the advantage of security.

Further, the purifying pipeline component comprises a filtering pipeline and a filtering valve, the fiber filtering net is installed in the filtering pipeline, an atomizing device is arranged in the filtering valve, and the filtering valve is communicated with the air outlet and the filtering pipeline.

Adopt above-mentioned technical scheme, during gaseous process filter tube got into the filter valve, because of gaseous gas through water filtering ponds can contain a certain amount of chemical particles, the atomizing device that sets up among the filter tube has the granule among the filtering gases with the fiber filter net, can get into the gas that the part comes from the outside among the filter tube, the structure of filter valve can effectual hindrance this partial gas and still have the effect of adjusting the size of wind-force, above-mentioned scheme can effectively improve gaseous purifying effect, make the gas that probably has the pollution property discharge outside after being effectual clean.

Further, the filter pipe is provided in a spiral shape.

By adopting the technical scheme, the spiral structure can be provided with the maximum length in the same volume during pipeline laying, so that the contact area of the filtering pipeline is increased, and the filtering effect of the filtering pipeline is increased.

Furthermore, the bent connection part of the gas collection air channel is arc-shaped.

By adopting the technical scheme, in long-time use, crystals generated by gas can be accumulated at the bending position of the gas collection air channel and are difficult to process, and the bending connection part is set to be arc-shaped, so that formed crystals are difficult to remain at the bending position under the action of large air volume, and the effect of keeping the gas collection air channel clean is achieved.

Further, a dust cover is mounted on the exhaust port.

By adopting the technical scheme, the exhaust port is communicated with the external exhaust system, dust and small insects are difficult to avoid appearing in the exhaust system due to the fact that the pipeline of the exhaust system is large in size and communicated with the whole building, and the exhaust port is provided with the dust cover for blocking the purpose in order to prevent the objects from entering the air duct of the exhaust cabinet.

In conclusion, the utility model has the following beneficial effects:

1. the exhaust cabinet is provided with the gas collection air pipe for absorbing chemical gas generated inside, the gas collection air pipe is connected with the exhaust fan, the exhaust fan sends the gas into the water filter tank through the gas collection air pipe, the gas filtered by the water filter component structure enters the purification pipeline component for secondary filtration and is finally discharged into an external exhaust system, the technical effects of automatically cleaning and filtering the gas and neutralizing the crystallizable bodies in the waste gas can be met, and the exhaust cabinet has the advantages of improving the gas quality and purifying harmful gas;

2. because the water filtering tank needs to be changed periodically and chemical reagents in the water filtering tank need to be added for a certain time, the cabinet body is provided with the reagent adding device and the drain pipe in a penetrating way so as to change the liquid in the water filtering tank under the condition that an operator does not contact the water filtering tank, and the water filtering tank has the advantages of improving the working efficiency and improving the purification effect;

3. set up filter tube into the helical shape, the bending position in gas collection wind channel sets up to arc and installs the dust cover at the gas vent, all has the effect that promotes gas purification ability, makes each parts life promote.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic structural view of the integrated piping of the present embodiment;

fig. 3 is a structural sectional view of a part of the duct of the present embodiment.

In the figure: 1. a cabinet body; 11. an exhaust port; 12. a test tube storage box; 13. double doors are opened; 14. a work table; 15. a test tube rack; 2. a gas collection duct; 21. a filter; 22. a metal filter screen; 3. an exhaust fan; 31. a fixed block; 32. a motor fan; 4. a water filtration assembly; 41. a communicating pipe; 42. a reagent adding device; 43. a drain pipe; 44. a water filtration tank; 5. a purge line assembly; 51. a filtration pipeline; 52. a filter valve; 53. an atomizing device; 54. a fiber filter screen; 6. a dust cover.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

The utility model provides an exhaust cabinet is used in laboratory, is one kind through set up multiple filter equipment in exhaust cabinet, purifies, filters the harmful gas or the chemical gas that the inside of exhaust cabinet produced, discharges again in the exhaust system outside the laboratory to have the exhaust cabinet that restriction external gas got into the laboratory, reach and carry out self-cleaning, filtration to gas, but the technical effect of the crystalline solid in the well combination waste gas has the advantage that improves gas quality, purifies harmful gas.

Referring to fig. 1 and 2, the present invention provides an embodiment, which includes a cabinet 1, the cabinet 1 is a metal frame structure, the interior of the box body is provided with a larger space for accommodating objects, one side of the box body is provided with an opening, the opening is provided with two sets of double doors 13, the double doors 13 are arranged in an upper group and a lower group, a worktable 14 is arranged on the cabinet body 1 in the middle of the two groups of double doors 13, the double doors 13 above the worktable 14 are used for opening the area of the worktable 14, the double doors 13 below are used for opening the area of the pipeline below, the uppermost part of the cabinet body 1 is provided with an exhaust port 11, a water filtering component 4, a purifying pipeline component 5, an exhaust fan 3 and a gas collecting air channel 2 are arranged in the cabinet body 1, wherein the water filtering component 4 and the exhaust fan 3 are arranged below the workbench 14, the gas collection duct 2 is communicated with the water filtering component 4 and the exhaust fan 3, and the purification pipeline component 5 is communicated with the water filtering component 4 and the exhaust port 11; wherein the gas collection air channel 2 and the purification pipeline component 5 are communicated with the cabinet body 1, the gas collection air channel 2 is arranged around the workbench 14 and at the top of the workbench 14 area of the cabinet body 1, the gas collection air channel 2 arranged around the workbench 14 cleans the gas and dust on the workbench 14 under the action of the exhaust fan 3, the gas collection air channel 2 at the top collects the chemical gas flowing upwards due to volatilization, a filter 21 is arranged in the gas collection air channel 2, the filter 21 is positioned below the workbench 14 and communicated with the exhaust fan 3, a metal filter screen 22 is arranged in the filter 21, macromolecular particles in the collected gas can be adsorbed on the metal filter screen 22 through the filter 21, so that the macromolecular particles cannot be accumulated in the exhaust fan 3 to cause the fault of the exhaust fan 3, the exhaust fan 3 pumps the gas to the water filtration component 4, chemical reagents are contained in the water filtration component 4, the crystal particles in the gas are filtered by water, the pH value of the gas is adjusted by chemical reagents, a part of possibly existing microorganisms are killed, the clearly finished gas enters the purification pipeline assembly 5, a fiber filter screen 54 is installed in the purification pipeline assembly 5, and the gas passes through the fiber filter screen 54 to enable water molecules contained in the gas and other components mixed in the water molecules to be collected and purified.

Refer to fig. 1, fig. 2, it is test tube storage box 12 to be provided with on the work platform, test tube storage box 12 is close to gas collection wind channel 2 and communicates with gas collection wind channel 2, test tube storage box 12 is square structure, it has seted up the opening towards two 13 directions of opening, be provided with test-tube rack 15 in the test tube storage box 12 and deposit the test tube, test tube storage box 12 sets up in test-tube rack 15's top with the intercommunication department in gas collection wind channel 2, can be effectual collect the chemical gas that flows because of not sealing in the test tube, have and deposit the reagent test tube, improve the advantage of security.

Referring to fig. 2 and 3, the filtering assembly includes two communicating pipes 41, which are respectively communicated with the exhaust fan 3 and the purifying pipe assembly 5, the water filtering tank 44 is a square structure, the interior of which is a cavity, the cavity is filled with liquid, two barrels of pipes penetrate into the cavity of the water filtering tank 44 from the top, the communicating pipe 41 communicated with the exhaust fan 3 is immersed in the liquid in the water filtering tank 44, so that the gas passing through the communicating pipe can be in contact with the liquid containing chemical reagents, and the effects of filtering crystal particles and performing neutralization reaction are achieved, the communicating pipe 41 communicated with the purifying pipe assembly 5 penetrates from the top of the water filtering tank 44 and extends into one end of the cavity, the extending part is not in contact with the liquid, and the structure enables the gas filtered by the water to flow into the purifying pipe assembly 5;

the water filtering assembly 4 is further provided with a reagent adding device 42 and a water discharging pipe 43, wherein the reagent adding device 42 penetrates through the cabinet body 1 and is communicated with the water filtering tank 44, the reagent adding device 42 is of a cylindrical structure outside the cabinet body 1, in order to facilitate an experimenter to inject a reagent into the water filtering tank 44, the reagent adding device 42 is immersed under the liquid level of the water filtering tank 44 in the water filtering tank 44 to form a communicating device structure, so that a backflow phenomenon cannot occur, the water discharging pipe 43 penetrates through the cabinet body 1, the water discharging pipe 43 is in contact with the bottom surface of the cavity in the structure of the water filtering tank 44 to discharge all liquid, the reagent adding device 42 is communicated with the water discharging pipe 43, and an operator flushes the inside of the water filtering tank 44 through the reagent adding device 42 under the condition that the water filtering tank 44 is not opened.

Referring to fig. 2 and 3, the purge duct assembly 5 includes a filter duct 51 and a filter valve 52, wherein a fiber filter 54 is installed in the filter duct 51, the filter valve 52 communicates with the exhaust port 11 and the filter duct 51 and with the water filter assembly 4, in particular with the communication duct 41 therein, the filter valve 52 has a function of limiting the flow rate of the gas and is internally installed with an atomizing device 53, the gas passes through the chemical molecules mixed with the gas, the gas filters a large amount of the chemical molecules under the function of the atomizing device 53, and passes through the filter duct 51, the fiber filter 54 in the filter duct 51 filters out the water molecules and other components co-melted with the water molecules in the gas and finally discharges the gas to the exhaust system outside the laboratory through the exhaust port 11, and the above scheme has the technical effect of improving the filtering capability;

filter pipe 51 sets up to helical shape, and helical structure can be the biggest in the same space the area of contact of pipeline to processing is simple, is provided with a large amount of fiber filter net 54 in the filter pipe 51, through the area of contact who increases filter pipe 51, effectual promotion filter effect.

Referring to fig. 2, the bent connection of the air collection duct 2 is arc-shaped, and because the air collection duct 2 is a square tube, the bent part of the air collection duct is easy to accumulate a certain amount of chemical crystals after being used for a period of time, chemical crystal molecules are unstable and can explode under the condition of vibration, and in order to prevent the generation of the situation, the bent connection is arc-shaped, so that the chemical crystals can be effectively prevented from accumulating, and the air exhaust cabinet has the advantage of improving the safety of the air exhaust cabinet.

Referring to fig. 1, a dust cover 6 is installed on the exhaust port 11, the exhaust port 11 is communicated with an external exhaust system, dust and small insects are inevitably generated in the exhaust system due to the large size of the pipeline and the communication with the whole building, and in order to prevent the objects from entering the air duct of the exhaust cabinet, the dust cover 6 for blocking purposes is installed on the exhaust port 11.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims (8)

1. The utility model provides an exhaust cabinet is used in laboratory, includes the cabinet body (1), install two divisions of doors (13) on the cabinet body (1), gas vent (11), its characterized in that have been seted up in the cabinet body (1): still install workstation (14), water filter component (4), purification pipeline subassembly (5), air exhauster (3) and gas collection wind channel (2) in the cabinet body (1), install in workstation (14) below water filter component (4) and air exhauster (3), chemical reagent has been held in water filter component (4), gas collection wind channel (2) are arranged around workstation (14) and communicate with water filter component (4) and air exhauster (3), install filter (21) in gas collection wind channel (2), fiber filter screen (54) are installed in purification pipeline subassembly (5), purification pipeline subassembly (5) and water filter component (4) and gas vent (11) intercommunication.

2. An exhaust cabinet for laboratory use according to claim 1, wherein: the test tube storage box (12) is arranged on the workbench (14), and the test tube storage box (12) is communicated with the gas collection air channel (2).

3. An exhaust cabinet for laboratory use according to claim 1, wherein: the water filtering assembly (4) comprises a water filtering pool (44) and a communication pipeline (41), and the communication pipeline (41) penetrates through the water filtering pool (44) and is communicated with the purification pipeline assembly (5).

4. An exhaust cabinet for laboratory use according to claim 3, wherein: the water filtering assembly (4) is further provided with a reagent adding device (42) and a water discharging pipe (43), the reagent adding device (42) penetrates through the cabinet body (1) to be arranged, and the water filtering tank (44) is provided with the water discharging pipe (43) and is communicated with the reagent adding device (42).

5. An exhaust cabinet for laboratory use according to claim 1, wherein: purify pipeline set spare (5) and include filtering duct (51) and filter valve (52), fibre filter screen (54) are installed in filtering duct (51), be provided with atomizing device (53) in filter valve (52), the filter valve intercommunication gas vent (11) and filtering duct (51).

6. An exhaust cabinet for laboratory use according to claim 5, wherein: the filter duct (51) is provided in a spiral shape.

7. A laboratory fume hood according to any of claims 1 to 6, characterized in that: the bent connection part of the gas collection air channel (2) is arc-shaped.

8. A laboratory fume hood according to any of claims 1 to 6, characterized in that: and a dust cover (6) is arranged on the exhaust port (11).

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