CN212855806U

CN212855806U - Biological safety cabinet ventilation structure

Info

Publication number: CN212855806U
Application number: CN202021500809.8U
Authority: CN
Inventors: 刘洪波
Original assignee: Tianjin Kerandes Technology Co ltd
Current assignee: Tianjin Kerandes Technology Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-04-02
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a biosafety cabinet ventilation structure, including the cabinet body, seted up the draft chamber on the top inner wall of the cabinet body, and install the board that looses through the bolt on the cabinet body is close to the top inner wall in draft chamber, install the second filter screen through the bolt on the inner wall directly over the board that looses is close to the cabinet body, install the fan through the bolt on the cabinet body is close to one side inner wall in draft chamber, and the center department of the inner wall of one side in draft chamber installs the guide plate through the bolt. The utility model discloses install the fan through the bolt on the lateral wall in ventilation chamber, the ventilation chamber lateral wall is close to the fan direction of airing exhaust and installs the guide plate to it is inhomogeneous to avoid the air current to form the downdraft that the swirl leads to the working chamber at the lateral wall in ventilation chamber, and the inside air in working chamber enters into respectively to the inside in circulation wind channel and backward flow wind channel through the ventilation grid, and the inside air in backward flow wind channel can play certain cooling effect to the fan, makes the air form good circulation in the inside of the cabinet body.

Description

Biological safety cabinet ventilation structure

Technical Field

The utility model relates to a biological safety cabinet technical field especially relates to a biological safety cabinet ventilation structure.

Background

The biosafety cabinet is designed for protecting the operator, the laboratory environment and the experimental materials from being exposed to infectious aerosols and splashes which may be generated in the operation process when operating infectious experimental materials such as primary cultures, strains of bacteria and viruses and diagnostic specimens.

Among the prior art, the downthehole air current that the work chamber was caused to the inside vortex that forms easily of biological safety cabinet draft chamber is inhomogeneous, can't form benign circulation, removes inconveniently, and the practicality is relatively poor. Therefore, it is desirable to design a ventilation structure of a biosafety cabinet to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a ventilation structure of a biological safety cabinet.

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

the utility model provides a biosafety cabinet ventilation structure, includes the cabinet body, the ventilation chamber has been seted up on the top inner wall of the cabinet body, and installs the board that looses through the bolt on the cabinet body is close to the top inner wall in ventilation chamber, the cabinet body is close to and looses and installs the second filter screen through the bolt on the inner wall directly over the board, install the fan through the bolt on the one side inner wall that the cabinet body is close to the ventilation chamber, and the center department of ventilation chamber one side inner wall installs the guide plate through the bolt, ventilation grid has all been seted up to the both sides of cabinet body bottom inner wall, and the cabinet body has been close to the both sides of ventilation grid and has been seted up circulation wind channel and backward flow wind.

Furthermore, the center department of cabinet body top outer wall sets up the chamber of airing exhaust that is linked together with the ventilation chamber, and installs first filter screen through the bolt on the inside wall in the chamber of airing exhaust.

Further, the ventilating funnel is installed through the bolt in the axle center department of cabinet body top outer wall, and the welding has the support frame on the inside wall of ventilating funnel, the air discharge fan is installed through the bolt in the axle center department of support frame.

Furthermore, the ventilating duct is communicated with the air exhaust cavity, and the outer wall of the top of the ventilating duct is in threaded connection with a filter screen cover.

Further, install through the bolt on the bottom outer wall of the cabinet body and hold the box, and hold the box and be U type structure.

Further, hold the both sides of box bottom outer wall and all install the support through the bolt, and the universal wheel is all installed through the bolt in the both ends of support bottom outer wall.

The utility model has the advantages that:

1. through the fan that sets up, install the fan through the bolt on the lateral wall in ventilation chamber, the ventilation chamber lateral wall is close to the fan direction of airing exhaust and installs the guide plate to it is inhomogeneous to avoid the air current to form the downwash that the swirl leads to the working chamber at the lateral wall in ventilation chamber.

2. Through the flow dispersing plate, the flow dispersing plate and the second filter screen are matched for use, so that air entering the working chamber in the cabinet body is cleaner, and the air is distributed more uniformly when entering the inside of the working chamber.

3. Through the circulation wind channel and the backward flow wind channel that set up, the inside air of working chamber gets into respectively to the inside in circulation wind channel and backward flow wind channel through the ventilation grid, and the inside air in backward flow wind channel can play certain cooling effect to the fan for the air forms good circulation in the inside of the cabinet body, novel structure, reasonable in design, and the practicality is strong.

4. Through the air discharge fan who sets up, the air discharge cabinet body of air discharge chamber inside can be ventilated to the air discharge fan to guarantee the clean degree of cabinet body internal portion air cycle, prevent that the product from by unpurified air pollution.

Drawings

Fig. 1 is a schematic structural view of a ventilation structure of a biosafety cabinet provided by the present invention;

fig. 2 is a schematic view of a cabinet body structure of a ventilation structure of the biosafety cabinet provided by the present invention;

fig. 3 is a schematic view of a sectional structure of a biological safety cabinet ventilating structure according to the present invention;

fig. 4 is a schematic view of a ventilator structure of a ventilation structure of a biosafety cabinet according to the present invention.

In the figure: the air conditioner comprises an accommodating box 1, a support 2, universal wheels 3, a cabinet 4, a ventilating funnel 5, a filter screen cover 6, a support 7, an exhaust fan 8, a ventilating cavity 9, a guide plate 10, a fan 11, a ventilating grille 12, an exhaust cavity 13, a first filter screen 14, a second filter screen 15, a flow dispersing plate 16, a circulating air duct 17 and a return air duct 18.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a ventilation structure of a biosafety cabinet comprises a cabinet body 4, a ventilation cavity 9 is formed on the inner wall of the top of the cabinet body 4, a flow dispersing plate 16 is installed on the inner wall of the top of the cabinet body 4 close to the ventilation cavity 9 through a bolt, a second filter screen 15 is installed on the inner wall of the cabinet body 4 close to the position right above the flow dispersing plate 16 through a bolt, a fan 11 is installed on the inner wall of one side of the cabinet body 4 close to the ventilation cavity 9 through a bolt, the model of the fan 11 is CZR-550, a flow guide plate 10 is installed at the center of the inner wall of one side of the ventilation cavity 9 through a bolt, ventilation grilles 12 are respectively installed on two sides of the inner wall of the bottom of the cabinet body 4, a circulation air duct 17 and a backflow air duct 18 are respectively installed on two sides of the cabinet body 4 close to the ventilation grilles 12, the, the side wall of the ventilation cavity 9 is close to the air exhaust direction of the fan 11 and is provided with a guide plate 10, so as to avoid uneven descending air flow of the working cavity caused by vortex formed by air flow on the side wall of the ventilation cavity 9, the air flow dispersing plate 16 and the second filter screen 15 are matched for use, so that the air entering the working cavity in the cabinet body 4 is cleaner, meanwhile, the air is distributed more uniformly when entering the inside of the working cavity, the air inside the working cavity enters the circulating air duct 17 and the backflow air duct 18 through the ventilation grating 12 respectively, and the air inside the backflow air duct 18 can play a certain cooling role for the fan 11, so that the air forms good circulation in the cabinet body 4.

Further, the chamber 13 of airing exhaust that is linked together with ventilation chamber 9 is seted up in the center department of the 4 top outer walls of cabinet body, and installs first filter screen 14 through the bolt on the inside wall in chamber 13 of airing exhaust, and first filter screen 14 can carry out effectual filtration to the inside air in ventilation chamber 9, prevents that harmful gas from appearing in the untreated exhaust condition.

Further, the ventilator 5 is installed through the bolt in the axle center department of the cabinet body 4 top outer wall, and the welding has support frame 7 on the inside wall of ventilator 5, and the air discharge fan 8 is installed through the bolt in the axle center department of support frame 7, and the model of air discharge fan 8 is BS-40, and air discharge fan 8 can be with the inside air escape cabinet body 4 in draft chamber 9 to the clean degree of the internal air circulation of cabinet body 4 has been guaranteed, prevents that the product from being by unpurified air pollution.

Further, the funnel 5 is linked together with between the chamber 13 of airing exhaust, and threaded connection has filter screen cover 6 on the top outer wall of funnel 5, and filter screen cover 6 can effectually prevent that the dust from entering into the inside to ventilation chamber 9 through funnel 5.

Further, install through the bolt on the bottom outer wall of the cabinet body 4 and hold box 1, and hold box 1 and be U type structure, hold the setting of box 1 for the biosafety cabinet stores up and receives, and the convenience is accomodate the instrument and is placed.

Further, hold the both sides of box 1 bottom outer wall and all install support 2 through the bolt, and the universal wheel 3 is all installed through the bolt in the both ends of 2 bottom outer walls of support, and universal wheel 3 makes the biosafety cabinet remove convenient and fast more, and then the practicality when having promoted daily use.

The working principle is as follows: when the ventilation structure of the biosafety cabinet is used, the fan 11 disperses air into ascending air and descending air under the action of the guide plate 10 when working, the exhaust fan 8 can exhaust the air in the ventilation cavity 9 out of the cabinet body 4, thereby ensuring the cleanness of the air circulation in the cabinet body 4 and preventing the product from being polluted by unpurified air, the descending air passes through the second filter screen 15 to be filtered and enters the working chamber through the flow dispersing plate 16, the air entering the working chamber in the cabinet body 4 is cleaner by the matching use of the flow dispersing plate 16 and the second filter screen 15, meanwhile, the air is distributed more evenly when entering the interior of the working chamber, the air in the working chamber enters the circulating air duct 17 and the return air duct 18 through the ventilation grids 12 respectively, and the air in the return air duct 18 can cool the fan 11 to a certain extent, so that the air forms a good circulation in the cabinet 4.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A ventilation structure of a biological safety cabinet comprises a cabinet body (4), and is characterized in that a ventilation cavity (9) is arranged on the inner wall of the top of the cabinet body (4), and the inner wall of the top part of the cabinet body (4) close to the ventilation cavity (9) is provided with a flow dispersing plate (16) through a bolt, a second filter screen (15) is arranged on the inner wall of the cabinet body (4) close to the right upper part of the flow dispersing plate (16) through bolts, a fan (11) is arranged on the inner wall of one side of the cabinet body (4) close to the ventilation cavity (9) through a bolt, a guide plate (10) is arranged at the center of the inner wall of one side of the ventilation cavity (9) through a bolt, both sides of the inner wall of the bottom of the cabinet body (4) are provided with ventilation grids (12), and both sides of the cabinet body (4) close to the ventilation grating (12) are respectively provided with a circulating air duct (17) and a return air duct (18), the other end of the circulating air duct (17) far away from the ventilation grating (12) is communicated with the ventilation cavity (9).

2. The ventilation structure of the biosafety cabinet according to claim 1, wherein an exhaust cavity (13) communicated with the ventilation cavity (9) is formed in the center of the outer wall of the top of the cabinet body (4), and a first filter screen (14) is installed on the inner side wall of the exhaust cavity (13) through a bolt.

3. The ventilation structure of the biosafety cabinet according to claim 1, wherein a ventilator (5) is installed at the axis of the outer wall of the top of the cabinet body (4) through a bolt, a support frame (7) is welded on the inner side wall of the ventilator (5), and an exhaust fan (8) is installed at the axis of the support frame (7) through a bolt.

4. The ventilation structure of the biosafety cabinet as claimed in claim 3, wherein the ventilation funnel (5) is communicated with the exhaust cavity (13), and the top outer wall of the ventilation funnel (5) is connected with the filter screen cover (6) in a threaded manner.

5. The ventilation structure of the biosafety cabinet according to claim 1, wherein the accommodating box (1) is installed on the outer wall of the bottom of the cabinet body (4) through bolts, and the accommodating box (1) is in a U-shaped structure.

6. The ventilation structure of the biosafety cabinet according to claim 5, wherein the brackets (2) are installed on both sides of the outer wall of the bottom of the accommodating box (1) through bolts, and the universal wheels (3) are installed on both ends of the outer wall of the bottom of the brackets (2) through bolts.