CN211437398U - Fume hood for laboratory - Google Patents

Abstract

The utility model discloses a fume chamber is used in laboratory relates to experimental facilities technical field. The utility model discloses a cabinet body, first glass board and second glass board, experimental cavity has been seted up on cabinet body surface, and an inner wall of experimental cavity is opened there is first ventilation chamber, and an inner wall of experimental cavity is opened there is the second ventilation chamber, and it has the intercommunication passageway to open between first ventilation chamber and the second ventilation chamber. The utility model discloses an air with the external world is discharged along first exhaust duct by first air-blower, form the wind curtain down to one side, discharge external air along the second exhaust duct through the second air-blower, form the wind curtain up to one side, two wind curtains mutually support and can block harmful gas outflow in the experiment chamber, and the gas gets into first ventilation chamber and second ventilation chamber more easily under the promotion of wind curtain air current and is discharged, and through be equipped with helical blade on the toper fan housing, make the air current that gets into in the toper fan housing become the vortex form, thereby make the gas in the experiment chamber get into in the toper fan housing more easily and discharged.

Description

Fume hood for laboratory

Technical Field

The utility model belongs to the technical field of experimental facilities, especially, relate to fume chamber for laboratory.

Background

In the process of chemical tests, many chemicals have strong volatility and are harmful to human bodies, and if experimenters are harmed by the chemicals for a long time, the experimenters can cause great damage to the human bodies. So higher in order to make the security of chemistry experiment, further protect experimenter's safety, often can protect the environment that the experimenter tested, produced the fume chamber from this, it uses the harmful gas who can be fine produces in the experimentation to discharge to reduce the injury that the experiment caused the human body, protect experimenter's safety.

The existing ventilation cabinet exhaust system for the laboratory is single in structure, the suction force to harmful gas in the cabinet body is small, the harmful gas generated in the cabinet body cannot be effectively exhausted, and the harmful gas in the cabinet body easily overflows the cabinet body, so that the body of an experimenter is injured; simultaneously, current laboratory is with fume chamber when using because operation panel and external intercommunication area are great for the harmful gas that the experiment produced flows more easily, and harmful gas directly is inhaled by the experimenter easily, thereby causes certain injury to the experimenter's health.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fume chamber is used in laboratory, form the air curtain down to one side through first air-blower and the cooperation of first exhaust duct, form the air curtain up to one side through the cooperation of second air-blower and second exhaust duct, two air curtains mutually support and can block harmful gas outflow in the laboratory cavity, and the air curtain promotes in the laboratory cavity gas and gets into first ventilation chamber and second ventilation chamber more easily and is discharged, thereby make the gas in the laboratory cavity get into in the toper fan housing more easily and be discharged, it is single with fume chamber exhaust system structure to have solved current laboratory, suction to harmful gas in the cabinet body is less, and can not effectively block the exhaust problem of harmful gas in the cabinet body.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a laboratory ventilation cabinet, including the cabinet body, first glass board and second glass board, experimental cavity has been seted up on cabinet body surface, an inner wall of experimental cavity is opened there is first ventilation chamber, an inner wall of experimental cavity is opened there is second ventilation chamber, it has the intercommunication passageway to open between first ventilation chamber and the second ventilation chamber, second ventilation chamber inner wall is fixed with the second baffle, cabinet body surface is opened there is a set of ventilation groove, two the ventilation groove all communicates with second ventilation chamber each other, the ventilation groove inner wall is fixed with first ventilation pipe, first ventilation pipe one end is fixed to communicate has the second ventilation pipe, first ventilation pipe inner wall is fixed with the flange, flange one surface is fixed with the motor, motor output shaft one end is fixed with the air discharge fan;

a second chute is formed in the inner wall of the experiment cavity, a first chute is formed in the other inner wall of the experiment cavity, a group of conical fan housings are fixed on the surface of the second baffle, the conical fan housings are located under the first ventilation pipe, helical blades are fixed on the inner wall of the conical fan housings, the first glass plate is in sliding fit with the inner wall of the second chute, the second glass plate is in sliding fit with the inner wall of the first chute, a first air box is fixed on the surface of the first glass plate, a first exhaust duct is fixedly penetrated on the surface of the first air box, a first air blower and a second air blower are sequentially fixed on the surface of the cabinet body from top to bottom, a first air pipe is fixed at one end of an air outlet of the first air blower, and the other end of the first air pipe sequentially penetrates through the surface of the cabinet body and the surface of the first air box and extends into the first;

a second air box is fixed on one surface of the second glass plate, a second air exhaust duct is fixed on one surface of the second air box in a penetrating mode, a second air pipe is fixed at one end of an air outlet of the second air blower, and the other end of the second air pipe penetrates through one surface of the cabinet body and one surface of the second air box in sequence and extends to the inside of the second air box.

Furthermore, a first baffle is fixed on the inner wall of the first ventilation cavity, and ventilation slot holes are formed in one surface of the first baffle and one surface of the second baffle.

Furthermore, a first handle is fixed on one surface of the first glass plate, and a second handle is fixed on one surface of the second glass plate.

Furthermore, an operation panel is fixed on an inner wall of the experiment cavity, a storage cavity is formed in the cabinet body, a cabinet door is rotatably connected to the inner wall, opposite to the storage cavity, of the storage cavity through hinges, and a handle is fixed on the surface of the cabinet door.

Furthermore, a third air blower is fixed on one surface of the cabinet body, a third air box is fixed on the other surface of the first glass plate, a third exhaust duct penetrates through and is fixed on one surface of the third air box, a third air pipe is fixed at one end of an air outlet of the third air blower, the other end of the third air pipe penetrates through one surface of the third air box and extends into the third air box, and the first air pipe, the second air pipe and the third air pipe are hoses capable of being protected by link plates in a rolling mode.

Furthermore, the included angle between the plane of the first exhaust duct and the horizontal plane ranges from 60 degrees to 90 degrees, and the included angle between the plane of the second exhaust duct and the horizontal plane ranges from 0 degree to 30 degrees.

The utility model discloses following beneficial effect has:

1. the utility model discloses an air that first air-blower will be external discharges along first exhaust airway, form the wind curtain that inclines downwards, discharge external air along the second exhaust airway through the second air-blower, form the wind curtain that inclines upwards, two wind curtains mutually support and can block harmful gas outflow in the laboratory chamber, and the gas gets into first ventilation chamber and second ventilation chamber more easily under the promotion of wind curtain air current and is discharged, and through be equipped with helical blade on the toper fan housing, make the air current that gets into in the toper fan housing become the vortex form, thereby make the gas in the laboratory chamber get into in the toper fan housing more easily and discharged, experimenter's safety has further been protected, it is single to have solved current fume hood exhaust system structure, suction to harmful gas in the cabinet body is less, and can not effectively block the problem of harmful gas exhaust in the cabinet body.

2. The utility model discloses a set up first glass board and slide from top to bottom along the second spout, the second glass board slides from top to bottom along first spout, thereby can adjust the intercommunication area of laboratory cave and external world, can prevent the discharge of toxic gas in the laboratory cave to a certain extent, and be equipped with the third bellows on first glass board, make the cabinet body go up fixed third air-blower can discharge the outside air along the third exhaust airway on the third bellows, thereby form the air curtain, make the gas that flows in the laboratory cave blockked, thereby further protect experimenter's safety, it uses with the fume chamber in the laboratory to have solved current, operation panel is great with external intercommunication area, make the harmful gas that the experiment produced flow more easily, and the harmful gas is direct by the inspiratory problem of experimenter easily.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a fume hood for a laboratory according to the present invention;

FIG. 2 is a schematic structural view of the cabinet body, the first ventilation cavity, the second ventilation cavity and the communication channel;

FIG. 3 is a schematic structural view of a first ventilation duct, a second ventilation duct, a motor and an exhaust fan;

FIG. 4 is a schematic structural view of the conical fan housing, the helical blade and the second baffle;

FIG. 5 is a schematic view of the structures of a first blower, a third blower, a first glass sheet and a first windbox;

FIG. 6 is a schematic view showing the structure of a second blower, a second glass plate, a second bellows and a second handle;

in the drawings, the components represented by the respective reference numerals are listed below:

1-cabinet, 2-experimental chamber, 3-first ventilation chamber, 4-second ventilation chamber, 5-communicating channel, 6-first baffle, 7-second baffle, 8-first chute, 9-second chute, 10-ventilation groove, 11-first ventilation pipe, 12-second ventilation pipe, 13-flange, 14-motor, 15-exhaust fan, 16-conical fan housing, 17-helical blade, 18-first glass plate, 19-first air box, 20-first exhaust duct, 21-first blower, 22-first air pipe, 23-second glass plate, 24-second air box, 25-second exhaust duct, 26-second blower, 27-second air pipe, 28-first handle, 29-second handle, 30-a third air box, 31-a third exhaust duct, 32-a third blower, 33-a third air pipe, 34-an operating plate, 35-a storage cavity, 36-a cabinet door and 37-a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, the utility model relates to a laboratory fume hood, which comprises a cabinet body 1, a first glass plate 18 and a second glass plate 23, wherein a laboratory cavity 2 is arranged on one surface of the cabinet body 1, the laboratory cavity 2 is used as a laboratory place, a first ventilation cavity 3 is arranged on one inner wall of the laboratory cavity 2, a second ventilation cavity 4 is arranged on one inner wall of the laboratory cavity 2, a communicating channel 5 is arranged between the first ventilation cavity 3 and the second ventilation cavity 4, a second baffle 7 is fixed on the inner wall of the second ventilation cavity 4, a group of ventilation slots 10 are arranged on one surface of the cabinet body 1, the two ventilation slots 10 are communicated with the second ventilation cavity 4, a first ventilation pipe 11 is fixed on the inner wall of the ventilation slot 10, one end of the first ventilation pipe 11 is fixedly communicated with a second ventilation pipe 12, a flange 13 is fixed on the inner wall of the first ventilation pipe 11, a motor 14 is fixed on one surface of the flange 13, an output shaft of the motor 14, the motor 14 drives the exhaust fan 15 to rotate, so that the exhaust fan 15 sucks air in the first ventilation cavity 3, air in the second ventilation cavity 4 communicated with the first ventilation cavity 3 through the communicating channel 5 is also sucked by the exhaust fan 15, toxic gas generated in an experiment in the experiment cavity 2 and air in the experiment cavity 2 enter the first ventilation cavity 3 and the second ventilation cavity 4, and are finally discharged into the waste gas treatment device along the first ventilation pipe 11 and the second ventilation pipe 12 for treatment, so that a user is safer during experiment operation, and the health of experimenters is protected;

a second chute 9 is formed in one inner wall of the experiment cavity 2, a first chute 8 is formed in the other inner wall of the experiment cavity 2, a group of conical fan housings 16 is fixed on one surface of the second baffle 7, the conical fan housings 16 are positioned under the first ventilation pipe 11, helical blades 17 are fixed on the inner walls of the conical fan housings 16, and the helical blades 17 are matched with the conical fan housings 16, so that gas entering the conical fan housings 16 generates vortex, thereby increasing the suction force of the conical fan housings 16 on the air in the experiment cavity 2 and facilitating the timely discharge of the gas in the experiment cavity 2, the first glass plate 18 is in sliding fit with the inner wall of the second chute 9, the second glass plate 23 is in sliding fit with the inner wall of the first chute 8, a damping pad is arranged at the joint of the first glass plate 18 and the second chute 9, a damping pad is also arranged at the joint of the second glass plate 23 and the first chute 8, so that the first glass plate 18 and the second glass plate 23 can stop at specified positions under the artificial push and, a first air box 19 is fixed on one surface of the first glass plate 18, a first exhaust duct 20 is fixedly penetrated on one surface of the first air box 19, a first air blower 21 and a second air blower 26 are sequentially fixed on one surface of the cabinet body 1 from top to bottom, a first air pipe 22 is fixed at one end of an air outlet of the first air blower 21, the other end of the first air pipe 22 sequentially penetrates through the surface of the cabinet body 1 and the surface of the first air box 19 and extends into the first air box 19, and the first air blower 21 sends outside air into the experimental cavity 2 along the first exhaust duct 20, so that an air curtain can be formed on one hand, toxic gas in the experimental cavity 2 is blocked from being exhausted, and meanwhile, toxic gas in the experimental cavity 2 can be extruded into the first ventilation cavity 3, so that the toxic gas can be exhausted;

a second glass plate 23 fixed surface has second bellows 24, 24 one surfaces of second bellows run through and are fixed with second exhaust airway 25, 26 air outlets one end of second air-blower is fixed with second tuber pipe 27, the second tuber pipe 27 other end runs through 1 surface of the cabinet body and 24 one surface of second bellows in proper order and extends to inside second bellows 24, second air-blower 26 sends external wind into experimental chamber 2 along second exhaust airway 25, on the one hand can form the air curtain, block the discharge of toxic gas in experimental chamber 2, also can extrude first ventilation chamber 3 with the toxic gas in experimental chamber 2 simultaneously, the discharge of the toxic gas of being convenient for, first air-blower 21 and second air-blower 26's cooperation is used, the spill over of toxic gas in the reduction experimental chamber 2 that can be very big, thereby guarantee experimenter's safety.

As shown in fig. 1 and 2, a first baffle 6 is fixed on the inner wall of the first ventilation cavity 3, and ventilation slot holes are formed in one surface of the first baffle 6 and one surface of the second baffle 7 and used for communicating the first ventilation cavity 3 and the second ventilation cavity 4 with the experimental cavity 2, so that air in the experimental cavity 2 can enter the first ventilation cavity 3 and the second ventilation cavity 4 conveniently.

As shown in fig. 5 and 6, a first handle 28 is attached to one surface of the first glass piece 18 and a second handle 29 is attached to one surface of the second glass piece 23, the first handle 28 making the first glass piece 18 more convenient to use and the second handle 29 making the second glass piece 23 more convenient to use.

Wherein as shown in fig. 1 and fig. 2, an inner wall of the experiment cavity 2 is fixed with an operation panel 34, the cabinet body 1 is provided with a storage cavity 35, a relative inner wall of the storage cavity 35 is rotatably connected with a cabinet door 36 through a hinge, a surface of the cabinet door 36 is fixed with a handle 37, and the storage cavity 35 is used for storing experiment articles.

As shown in fig. 1 and 5, a third blower 32 is fixed on one surface of the cabinet body 1, a third air box 30 is fixed on the other surface of the first glass plate 18, a third exhaust duct 31 penetrates and is fixed on one surface of the third air box 30, a third air pipe 33 is fixed at one end of an air outlet of the third blower 32, the other end of the third air pipe 33 penetrates and is fixed on one surface of the third air box 30 and extends into the third air box 30, the third blower 32 sprays outside air along the third exhaust duct 31, so that an air curtain is generated between an experimenter and the cabinet body 1, further, the harm of toxic gas in the experimental cavity 2 to the experimenter is prevented, and the first air pipe 22, the second air pipe 27 and the third air pipe 33 are hoses capable of being protected by rolling chain plates, so that the first air pipe 22, the second air pipe 27 and the third air pipe 33 are not easy to wind in the moving process, and are safer.

As shown in fig. 5 and 6, the angle between the plane of the first exhaust duct 20 and the horizontal plane is 75 °, the angle between the plane of the second exhaust duct 25 and the horizontal plane is 15 °, and the arrangement mode enables the air curtain formed by the first exhaust duct 20 and the second exhaust duct 25 to form an air curtain to block the toxic gas and to push the toxic gas in the experimental chamber 2 to be exhausted by the exhaust fan 15.

One specific application of this embodiment is: in the initial state, the first glass plate 18 and the second glass plate 23 are in the closed state, so that the inside of the experiment chamber 2 is in the closed state, the experimenter pushes the first glass plate 18 and the second glass plate 23 to separate through the first handle 28 and the second handle 29, so that the gap between the first glass plate 18 and the second glass plate 23 is just convenient for the experimenter to perform experiment operation and does not obstruct the experimenter performing the experiment, the experimenter places corresponding chemicals and equipment required for the experiment on the operation board 34 inside the experiment chamber 2, then turns on the lamp inside the cabinet 1, and energizes the motor 14, the first blower 21, the second blower 26 and the third blower 32 on the cabinet 1, so that the experimenter starts to work, the experimenter performs experiment operation by using the corresponding chemicals and equipment, and in the process, the chemicals in the experiment are volatilized, the air flows out of the experiment cavity 2 along the first exhaust duct 20 by the first air blower 21, so that an air curtain obliquely downward is formed inside the experiment cavity 2, and the air flows out of the experiment cavity 2 along the gap between the first glass plate 18 and the second glass plate 23 by the second air blower 26, so that the safety of experimenters is protected, and because the air curtain is inclined, the air curtain blows the air in the experiment cavity 2 into the first ventilation cavity 3 and the second ventilation cavity 4, and the motor 14 drives the exhaust fan 15 to rotate, so that the air in the first ventilation cavity 3 and the second ventilation cavity 4 is exhausted, and enters the exhaust gas treatment mechanism along the second ventilation pipe 12 for treatment, a set of conical air hoods 16 is arranged inside the first ventilation cavity 3, and the spiral blade 17 is fixed on the inner wall of the conical fan housing 16, so that the air entering the conical fan housing 16 from the experimental cavity 2 can form a vortex-shaped air flow under the action of the exhaust fan 15 and the spiral blade 17, so that the conical fan housing 16 can better pull the air in the experimental cavity 2 to be discharged along the conical fan housing 16, further reducing the diffusion of harmful gas in the experimental cavity 2, protecting the safety of the experimenter, and finally, the third air blower 32 can discharge the outside air along the third exhaust duct 31 to form a vertically downward air curtain, thereby preventing the harmful gas floating in the experimental cavity 2 from being sucked by the experimenter, so that the experimenter can utilize the ventilation cabinet to carry out the laboratory, the safety is higher, and the influence on the health of the experimenter is smaller, after the experiment is finished, the first glass plate 18 and the second glass plate 23 are closed again, and the motor 14, the first air blower 21, the second air blower 26 and the third air blower 32 are controlled to continue to work for a certain time and stop working, thereby ensuring that the harmful gas in the experimental cavity 2 is exhausted as much as possible and protecting the safety of the laboratory environment.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. Fume chamber is used in laboratory, including the cabinet body (1), its characterized in that: the glass cabinet is characterized by further comprising a first glass plate (18) and a second glass plate (23), an experiment cavity (2) is formed in one surface of the cabinet body (1), a first ventilation cavity (3) is formed in one inner wall of the experiment cavity (2), a second ventilation cavity (4) is formed in one inner wall of the experiment cavity (2), a communication channel (5) is formed between the first ventilation cavity (3) and the second ventilation cavity (4), a second baffle (7) is fixed on the inner wall of the second ventilation cavity (4), a group of ventilation grooves (10) are formed in one surface of the cabinet body (1), the two ventilation grooves (10) are communicated with the second ventilation cavity (4), a first ventilation pipe (11) is fixed on the inner wall of each ventilation groove (10), a second ventilation pipe (12) is fixed on one end of the first ventilation pipe (11), a flange (13) is fixed on the inner wall of the first ventilation pipe (11), and a motor (14) is fixed on the surface of the flange (13), an exhaust fan (15) is fixed at one end of an output shaft of the motor (14);

an inner wall of the experiment cavity (2) is provided with a second chute (9), another inner wall of the experiment cavity (2) is provided with a first chute (8), a surface of the second baffle plate (7) is provided with a group of conical fan housing (16), the conical fan housing (16) is positioned under the first ventilation pipe (11), the inner wall of the conical fan housing (16) is provided with a helical blade (17), the first glass plate (18) is in sliding fit with the inner wall of the second chute (9), the second glass plate (23) is in sliding fit with the inner wall of the first chute (8), the surface of the first glass plate (18) is provided with a first air box (19), the surface of the first air box (19) is fixed with a first ventilation pipe (20) in a penetrating manner, the surface of the cabinet body (1) is fixed with a first air blower (21) and a second air blower (26) in a downward manner, one end of the first air blower (21) is fixed with a first air pipe (22) from the top, the other end of the first air pipe (22) penetrates through one surface of the cabinet body (1) and one surface of the first air box (19) in sequence and extends into the first air box (19);

second glass board (23) a fixed surface has second bellows (24), second bellows (24) a surface runs through and is fixed with second exhaust airway (25), second air-blower (26) air outlet one end is fixed with second tuber pipe (27), the second tuber pipe (27) other end runs through in proper order that cabinet body (1) a surface and second bellows (24) a surface just extend to inside second bellows (24).

2. Fume chamber for laboratories according to claim 1, characterized in that said first ventilation chamber (3) has a first baffle (6) fixed to its inner wall, said first baffle (6) and said second baffle (7) having a surface provided with ventilation slots.

3. Laboratory fume hood according to claim 1, characterized in that a first handle (28) is fixed to one surface of the first glass pane (18) and a second handle (29) is fixed to one surface of the second glass pane (23).

4. The laboratory fume hood according to claim 1, wherein an operation panel (34) is fixed on an inner wall of the experimental cavity (2), the cabinet body (1) is provided with a storage cavity (35), a cabinet door (36) is rotatably connected to an opposite inner wall of the storage cavity (35) through a hinge, and a handle (37) is fixed on one surface of the cabinet door (36).

5. The laboratory fume hood according to claim 1, wherein a third air blower (32) is fixed on one surface of the cabinet body (1), a third air box (30) is fixed on the other surface of the first glass plate (18), a third exhaust duct (31) penetrates through and is fixed on one surface of the third air box (30), a third air pipe (33) is fixed at one end of an air outlet of the third air blower (32), the other end of the third air pipe (33) penetrates through one surface of the third air box (30) and extends into the third air box (30), and the first air pipe (22), the second air pipe (27) and the third air pipe (33) are hoses capable of being protected by rollable chain plates.

6. The laboratory fume hood according to claim 1, wherein the first air exhaust duct (20) is located in a plane having an angle of 60 ° to 90 ° with the horizontal plane, and the second air exhaust duct (25) is located in a plane having an angle of 0 ° to 30 ° with the horizontal plane.

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