CN111495914A

CN111495914A - Fume hood for laboratory

Info

Publication number: CN111495914A
Application number: CN202010340086.8A
Authority: CN
Inventors: 郑树清
Original assignee: Guangzhou Boka Laboratory System Technology Co ltd
Current assignee: Guangzhou Boka Laboratory System Technology Co ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-08-07

Abstract

The invention discloses a fume chamber for a laboratory, and belongs to the field of laboratory tools. It includes the lower cabinet body and installs the last cabinet body on the lower cabinet body, the convulsions passageway has been seted up at the top of the last cabinet body, install the air exhauster in the convulsions passageway, go up cabinet body front side and open and be equipped with the window, still include the cover glass window, be equipped with vertical extension's guide rail on the lateral wall of window both sides, the both sides tip of cover glass window slides and locates in the guide rail, the cover glass window has upper limit position and lower limit position, the lower limit position distance of cover glass window interval between the top of the lower cabinet body is greater than 0 mm. Therefore, compared with the prior art, the invention can ensure sufficient operation space and reduce the potential safety hazard.

Description

Fume hood for laboratory

Technical Field

The invention relates to the field of laboratory tools, in particular to a fume hood for a laboratory.

Background

Typically, a counter-top fume hood is used for the purpose of cleaning the laboratory environment. Except for a microorganism laboratory, other laboratories which generate a large amount of harmful gases such as organic and inorganic preprocessing and the like need to use a fume hood, so the fume hood is used for ensuring the safety of laboratory personnel using organic solvents, dust, biological substances, biological dangerous substances and the like. The inside workspace that has of general fume chamber, there is the air exit at the top, has the operation panel in the workspace, bench installation experimental facilities, and the harmful gas that experimental facilities produced is discharged to the air exit.

The fume hood has to ensure enough operation space of operators and also ensure personal safety of the operators to avoid harmful gas suction, but the existing fume hood has too small operation space and does not have larger potential safety hazard, so a new technical scheme is necessary to be provided.

Disclosure of Invention

The invention provides a ventilating cabinet for a laboratory, which solves the problems that in the prior art, the operation space is too small and larger potential safety hazards do not exist.

In order to achieve the purpose, the technical scheme of the invention is realized as follows: the utility model provides a fume chamber is used in laboratory, includes the lower cabinet body and installs last cabinet body on the lower cabinet body, the convulsions passageway has been seted up at the top of the last cabinet body, install the air exhauster in the convulsions passageway, it opens and is equipped with the window to go up cabinet body front side, still includes the cover glass window, be equipped with the guide rail of vertical extension on the lateral wall of window both sides, the both sides tip of cover glass window slides and locates in the guide rail, the cover glass window has upper limit position and lower limit position, the lower limit position distance of cover glass window interval between the top of the lower cabinet body is greater than 0 mm.

Preferably, the distance between the lower limit position of the protective glass window and the top of the lower cabinet body is 20 mm-30 mm.

Preferably, the distance between the lower limit position of the protective glass window and the top of the lower cabinet body is 25 mm.

Preferably, the protective glass window comprises transparent glass and a window frame wrapping the peripheral end parts of the transparent glass, and the end parts of two sides of the window frame are in sliding connection with the guide rails.

Preferably, the bottom of the window frame is provided with a pushing handle.

Compared with the prior art, the invention has the following advantages: before the fume hood for the laboratory is used, the protective glass window is pushed to the top of the window to reach the upper limit position, then test operation can be carried out, the protective glass window is quickly pulled down to the lower limit position when chemical reaction is carried out, harmful gas generated by the reaction is extracted by the exhaust fan through the exhaust channel, and operators are prevented from sucking the harmful gas. Therefore, compared with the prior art, the invention can ensure sufficient operation space and reduce the potential safety hazard.

Drawings

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

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 1-lower cabinet body, 2-upper cabinet body, 3-air draft channel, 4-protective glass window, 5-guide rail, 41-transparent glass, 42-window frame, 43-pushing handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1, fig. 1 is a schematic structural diagram of the present invention.

The invention provides a ventilating hood for a laboratory, which comprises a lower cabinet body 1 and an upper cabinet body 2 arranged on the lower cabinet body 1, wherein an air draft channel 3 is formed in the top of the upper cabinet body 2, an exhaust fan (not shown in the figure) is arranged in the air draft channel 3, a window is formed in the front side of the upper cabinet body 2, an operation space of an operator is formed in the window, the operation space is communicated with the air draft channel 3, and a safety signboard, an emergency stop button, a waterproof socket and the like are further arranged on the lower cabinet body 1. The side wall of the upper cabinet body 1 close to the window is also provided with a control panel, a safety warning board, a waterproof socket and the like. An inner lining plate is also arranged in the operation space and is made of ceramic fiber plates.

As shown in fig. 1, the cabinet further comprises a protective glass window 4, the side walls of the two sides of the window are provided with guide rails 5 extending vertically, the end parts of the two sides of the protective glass window 4 are arranged in the guide rails 5 in a sliding manner, the protective glass window 4 has an upper limit position and a lower limit position, and the distance between the lower limit position of the protective glass window 4 and the top of the lower cabinet body 1 is greater than 0 mm. That is, the cover glass window 4 cannot completely close the window, and if the window is completely closed, harmful gas is continuously pumped out during air pumping, no new air enters and is supplemented, the pressure in the operating space is reduced, and when the pressure is lower than a certain pressure value, the cover glass window 4 can burst.

Before using, push away the top of cover glass window earlier in order to reach the upper limit position to the window, then just can carry out test operation, wait that chemical reaction pulls down the cover glass window to the lower limit position rapidly, and the harmful gas that the reaction produced is taken out by exhaust fan by convulsions passageway, avoids operating personnel to inhale harmful gas.

The distance between the lower limit position of the protective glass window 4 and the top of the lower cabinet body 1 can be 10mm, 20mm or 30mm, and in the embodiment, the distance between the lower limit position of the protective glass window 4 and the top of the lower cabinet body 1 is 20 mm-30 mm. Specifically, the lower limit position of the cover glass window 4 is 25mm away from the top of the lower cabinet 1.

As shown in fig. 1, there are various options for the structure of the cover glass window 1, in this embodiment, the cover glass window 1 includes a transparent glass 41 and a window frame 42 wrapping the peripheral end of the transparent glass 41, and both ends of the window frame 42 are slidably connected to the guide rails 5. The transparent glass 41 allows easy observation of the change in the reaction. The bottom of the window frame 42 is provided with a push handle 43. The cover glass 1 can be easily and manually controlled to ascend or descend by pushing the handle 43.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a fume chamber is used in laboratory, includes the lower cabinet body and installs last cabinet body on the lower cabinet body, the convulsions passageway has been seted up at the top of the last cabinet body, install the air exhauster in the convulsions passageway, it opens and is equipped with the window to go up cabinet body front side, its characterized in that still includes the protective glass window, be equipped with vertical extension's guide rail on the lateral wall of window both sides, the both sides tip of protective glass window slides and locates in the guide rail, the protective glass window has upper limit position and lower limit position, the lower limit position distance of protective glass window interval between the top of the lower cabinet body is greater than 0 mm.

2. A laboratory fume hood according to claim 1, wherein: the lower limit position of the protective glass window is 20 mm-30 mm away from the top of the lower cabinet body.

3. A laboratory fume hood according to claim 2, wherein: the distance between the lower limit position of the protective glass window and the top of the lower cabinet body is 25 mm.

4. A laboratory fume hood according to claim 1, wherein: the protective glass window comprises transparent glass and a window frame wrapping the peripheral end parts of the transparent glass, and the end parts of two sides of the window frame are connected with the guide rails in a sliding mode.

5. A laboratory fume hood according to claim 4, wherein: the bottom of the window frame is provided with a pushing handle.