CN215389367U

CN215389367U - Closed biological clean safety cabinet of inner space

Info

Publication number: CN215389367U
Application number: CN202121433914.9U
Authority: CN
Inventors: 余俊祥; 胡凤苹; 陈浩荣
Original assignee: Shenzhen Mingke Technology Co ltd
Current assignee: Shenzhen Mingke Technology Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-01-04
Anticipated expiration: 2031-06-28

Abstract

The utility model discloses a biological cleaning safety cabinet with a closed inner space, which comprises a cabinet body, wherein one side of the outer side wall of the cabinet body is provided with an inward-concave extending part, the extending part is provided with an opening for a sample to pass in and out, the opening part is hinged with a transparent protection window, a hinged shaft of the transparent protection window is positioned at the top end of the opening, and a pair of limb jacks are symmetrically arranged on the transparent protection window. According to the utility model, the working chamber part is communicated with the outside by using the air inlet pipe, the protection window is provided with the limb insertion holes which are operated and used after two hands are inserted, the elastic connecting sleeves at the limb insertion hole parts are elastically wrapped on the outer side of the limb part protection suit of an operator to increase the sealing performance of the limb insertion hole parts, when the operation is stopped, the electric telescopic rods can be used for respectively driving the pressing plates and the sealing plates to press upwards to cut off the communication between the working chamber and the inside of the cabinet body, so that the gas in the cabinet body is prevented from escaping outwards from the working chamber part.

Description

Closed biological clean safety cabinet of inner space

Technical Field

The utility model relates to the technical field of biological safety cabinets, in particular to a biological clean safety cabinet with a closed inner space.

Background

A biological clean safety cabinet is an air purification device which provides local dustless and sterile working environment, can artificially control and discharge polluted air in a working area through a special filtering channel, avoids harm to people and the environment, is a safe biological clean safety cabinet which is special for microorganisms and is convenient for replacing a filter, can be widely applied to relevant industries such as biological laboratories, medical treatment and health, biological pharmacy and the like, and has good effects on improving process conditions, protecting the health of operators and improving the product quality and the yield.

The working principle of the biological safety cabinet is mainly that air in the cabinet is sucked outwards, so that the interior of the cabinet is kept in a negative pressure state, and workers are protected by vertical air flow; outside air gets into in the safety cabinet after high-efficient air cleaner filters to avoid handling the sample and polluted, the air in the cabinet also need discharge in the atmosphere after the HEPA filter filters again, in order to protect the environment.

At present, current biological safety cabinet is at the in-process of using, though can make the inside negative pressure state of workstation avoid gas leakage when taking out gas, but owing to need the staff to advance at the workstation man-made operation, when waving limbs or getting and put the sample, inevitably can cause a small amount of inside gaseous to leak easily, influence staff health and safety, and when biological safety cabinet stopped using, because cabinet internal portion negative pressure air no longer produces, the harmful substance of the internal portion of cabinet also causes easily to leak, for this reason, we provide a closed biological clean cabinet of inner space.

Disclosure of Invention

The utility model aims to provide a biological cleaning safety cabinet with a closed inner space, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a biological cleaning safety cabinet with a closed inner space comprises a cabinet body, wherein one side of the outer side wall of the cabinet body is provided with an inward sunken extending part, an opening for a sample to pass in and out is arranged on the extending part, a transparent protection window is hinged at the opening part, a hinged shaft of the transparent protection window is positioned at the top end of the opening, a pair of limb jacks are symmetrically arranged on the transparent protection window, the inner part of the cabinet body below the extending part is horizontally welded with a workbench, two sides of the top part of the workbench are symmetrically provided with a pair of air inlet grids, a baffle is vertically welded at the end face position of the workbench far away from one end of the extending plate, the outer side walls at two sides of the baffle are welded with the inner side wall of the cabinet body, two ends of the baffle respectively extend to the upper end position and the lower end position of the inner part of the cabinet body, an air guide groove is formed between one side of the baffle far away from the workbench, and a vent plate is horizontally welded between the cabinet body above the extending part and the baffle, the ventilating plate is provided with through holes at equal intervals in a rectangular array shape, the top of the ventilating plate is provided with a filter, the ventilating plate and the interior of the cabinet body at the position under the workbench are symmetrically provided with a pair of supporting blocks, the tops of the supporting blocks are vertically and upwards provided with electric telescopic rods, a press plate is connected between the output ends of the electric telescopic rods at two sides under the ventilating plate, the press plate is evenly provided with plugging heads matched with the through holes at equal intervals, the press plate between two adjacent plugging heads is provided with air guide holes, a grid net is connected between the output ends of the electric telescopic rods at two sides under the workbench, a pair of sealing plates are symmetrically arranged at the top of the grid net at the position under the air inlet grids at two sides, a backflow cavity is formed in the interior of the cabinet body above the ventilating plate, and a working cavity is formed in the interior of the cabinet body between the ventilating plate and the workbench, and a pair of air inlet pipes used for supplementing external fresh air are symmetrically arranged on the cabinet body at the working cavity part, an air suction cavity is formed in the cabinet body below the workbench, the air suction cavity and the backflow cavity are respectively communicated with the upper end and the lower end of the air guide groove, a suction fan is installed at the bottom end position of the inner part of the air suction cavity, an air outlet of the suction fan extends to the bottom end position of the inner part of the air guide groove, and the top of the cabinet body is connected with an exhaust pipe.

Preferably, two the air-supply line is located the cabinet body of extension both sides respectively, the one end of air-supply line extends to cabinet body lateral wall position department and installs the dust screen, the air-supply line other end extends to the inside one side that is close to the baffle of working chamber, and inserts on the air-supply line and is equipped with new trend filtering component.

Preferably, a sealing plug is arranged on the transparent protection window outside the limb insertion hole, an elastic connecting sleeve is connected to the transparent protection window inside the limb insertion hole, and the elastic connecting sleeve is made of silica gel.

Preferably, an ultraviolet germicidal lamp is mounted on the inner side wall of the cabinet body at the backflow cavity part.

Preferably, supporting legs are mounted at four corners of the bottom of the cabinet body.

Preferably, the new trend filtering component supports the casing that uses including the outside, the top of air-supply line is equipped with and is used for inserting the slot that establishes the casing and use, the both sides of casing lateral wall all are equipped with the bleeder vent that is used for inside and air-supply line to be linked together, the inside both sides of casing all are equipped with the filter screen, and the inside packing of casing between the filter screen of both sides has the active carbon filter layer, and the top of casing is equipped with the handle.

Compared with the prior art, the utility model has the beneficial effects that: the utility model uses the air inlet pipe to communicate with the outside at the working chamber part, and the protective window is provided with the limb insertion hole which is used after the two hands are inserted, during the use process, the protective window is closed by the self-weight of the whole body, the operator can operate and use the sample placed on the worktable after inserting the two hands into the limb insertion hole, the elastic connecting sleeve at the limb insertion hole part is covered on the outer side of the protective clothing at the limb part of the operator to increase the sealing performance of the limb insertion hole part, thereby further improving the sealing performance of the working chamber in the use process, because the suction fan needs to suck a part of the outside fresh air into the working chamber to keep the air pressure balance and the air circulation, the arrangement of the air inlet pipe can replace the open arrangement of the conventional outside fresh air, the channel connecting the outside fresh air and the working chamber is increased, thereby the normal use of the biological safety cabinet is not influenced, the escape of the gas in the working cavity is avoided, when the cabinet is stopped, the electric telescopic rod can be used for driving the pressing plate and the sealing plate to be pressed upwards respectively to cut off the communication between the working cavity and the inside of the cabinet, so that the gas in the cabinet is prevented from escaping outwards from the working cavity.

Drawings

FIG. 1 is a side view of the internal structure of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is an enlarged schematic side view of the laminated board according to the present invention;

fig. 4 is a schematic top view of an inner structure of an air inlet duct according to the present invention.

In the figure: 1. a through hole; 2. a reflux cavity; 3. pressing the plywood; 4. an exhaust duct; 5. a filter; 6. a wind guide hole; 7. an elastic connecting sleeve; 8. a fresh air filtering component; 9. an air inlet pipe; 10. a wind guide groove; 11. a sealing plate; 12. a support block; 13. a baffle plate; 14. a suction fan; 15. a cabinet body; 16. supporting legs; 17. a suction chamber; 18. a grid net; 19. an air inlet grille; 20. a work table; 21. a working chamber; 22. a transparent protective window; 23. a limb insertion hole; 24. an extension portion; 25. a gas permeable plate; 26. an ultraviolet germicidal lamp; 27. a dust screen; 28. a plugging head; 29. an electric telescopic rod; 30. air holes are formed; 31. an activated carbon filter layer; 32. a housing; 33. and (4) a filter screen.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: a biological cleaning safety cabinet with a closed inner space comprises a cabinet body 15, supporting legs 16 are mounted at four corners of the bottom of the cabinet body 15, an inward-recessed extension portion 24 is arranged at one side of the outer side wall of the cabinet body 15, an opening for enabling a sample to pass in and out is arranged on the extension portion 24, a transparent protection window 22 is hinged at the opening portion and used for taking and placing the sample, the opening at the position of the recessed portion 24 is influenced by the recessed portion 24 with a certain depth, therefore, even if a small amount of gas leaks out when the opening is opened in the using process, the gas can be limited by the recessed portion 24 to diffuse after leaking out a certain area and is sucked into the cabinet body 15 again, the possibility of gas leakage in the cabinet body 15 is reduced, a hinged shaft of the transparent protection window 22 is located at the top end of the opening, a pair of limb insertion holes 23 are symmetrically arranged on the transparent protection window 22, a sealing plug is arranged on the transparent protection window 22 outside the limb insertion holes 23, an elastic connecting sleeve 7 is connected on a transparent protection window 22 on the inner side of the limb insertion hole 23, the elastic connecting sleeve 7 is made of silica gel, the elastic connecting sleeve 7 wraps the arm part of the human body to improve the sealing performance, a sealing plug can block the limb insertion hole 23 when the use is stopped, a workbench 20 is horizontally welded in the cabinet body 15 below the extension part 24, a pair of air inlet grids 19 are symmetrically arranged on two sides of the top of the workbench 20, a baffle 13 is vertically welded at the end face position of the workbench 20 far away from one end of the extension plate 24, the outer side walls on two sides of the baffle 13 are welded with the inner side wall of the cabinet body 15, two ends of the baffle 13 respectively extend to the upper end position and the lower end position in the cabinet body 15, an air guide groove 10 is formed between one side of the baffle 13 far away from the workbench 20 and the cabinet body 15, a ventilation plate 25 is horizontally welded between the cabinet body 15 above the extension part 24 and the baffle 13, through holes 1 are arranged on the ventilation plate 25 in a rectangular array shape at equal intervals, the filter 5 is arranged on the top of the ventilation plate 25, the filter 5 is an HEPA filter, a pair of supporting blocks 12 are symmetrically arranged inside the cabinet body 15 at the position under the ventilation plate 25 and the workbench 20, electric telescopic rods 29 are vertically and upwards arranged on the tops of the supporting blocks 12, a compression plate 3 is connected between the output ends of the electric telescopic rods 29 at two sides under the ventilation plate 25, plugging heads 28 matched with the through holes 1 are uniformly arranged on the compression plate 3 at equal intervals, air guide holes 6 are arranged on the compression plate 3 between two adjacent plugging heads 28, a grid net 18 is connected between the output ends of the electric telescopic rods 29 at two sides under the workbench 20, a pair of sealing plates 11 are symmetrically arranged on the tops of the grid nets 18 at the position under the air inlet grids 19 at two sides, a backflow cavity 2 is formed inside the cabinet body 15 above the ventilation plate 25, and an ultraviolet germicidal lamp 26 is arranged on the inner side wall of the cabinet body 15 at the backflow cavity 2, a working chamber 21 is formed inside the cabinet body 15 between the ventilation plate 25 and the workbench 20, a pair of air inlet pipes 9 for supplying outside fresh air are symmetrically arranged on the cabinet body 15 at the position of the working chamber 21, the two air inlet pipes 9 are respectively positioned on the cabinet bodies 15 at the two sides of the extension part 24, one end of each air inlet pipe 9 extends to the position of the outer side wall of the cabinet body 15 and is provided with a dustproof net 27, the other end of each air inlet pipe 9 extends to one side of the inside of the working chamber 21 close to the baffle 13, a fresh air filtering component 8 is inserted on each air inlet pipe 9, each fresh air filtering component 8 comprises a shell 32 supported and used at the outer side, a slot for inserting the shell 32 is arranged at the top of each air inlet pipe 9, air holes 30 for communicating the inside with the air inlet pipes 9 are arranged at the two sides of the outer side wall of the shell 32, filter screens 33 are arranged at the two sides of the inside of the shell 32, and activated carbon filter layers 31 are filled in the shell 32 between the filter screens 33 at the two sides, the top of the casing 32 is provided with a handle, the fresh air filtering component 8 is a replaceable component, and is fixed after being inserted into a slot on the air inlet pipe 9, the new fresh air filtering component 8 is taken out and reinstalled during replacement, an air suction cavity 17 is formed inside the cabinet body 15 below the workbench 20, the air suction cavity 17 and the backflow cavity 2 are respectively communicated with the upper end and the lower end of the air guide groove 10, the bottom end position inside the air suction cavity 17 is provided with an air suction fan 14, an air outlet of the air suction fan 14 extends to the bottom end position inside the air guide groove 10, the top of the cabinet body 15 is connected with an exhaust pipe 4, it needs to be explained that an operation panel for controlling the on-off use of electrical appliances is further installed on the outer side wall of the cabinet body 15, and a user can control the on-off use of the electrical appliances inside the cabinet body 15 through the operation panel.

The working principle is as follows: when the portable vacuum cleaner needs to be used, an external power supply supplies power to electric appliances inside the cabinet body 15, the electric telescopic rod 29 is contracted to drive the pressing plate 3 and the grating net 18 to descend, the backflow cavity 2 is sequentially communicated with the working cavity 21 and the air suction cavity 17, the suction fan 14 and the ultraviolet germicidal lamp 26 are started, a sample to be detected is placed on the upper surface of the workbench 20 through an opening of the extending part 24 after the transparent protective window 22 is opened in a turnover mode, then the transparent protective window 22 is closed, an operator can operate on the workbench 20 after inserting two hands into the limb jacks 23 on two sides respectively, the suction fan 14 works to enable the interiors of the air suction cavity 17 and the working cavity 21 to form a negative pressure environment in the operation process, in the negative pressure environment, part of exhaust gas at the backflow cavity 2 is filtered by the filter 5 and then enters the working cavity 21 again, and mainly the air inlet pipe 9 sucks outside fresh air to enter the interior of the working cavity 21 for balancing air pressure use, external new trend utilizes new trend filtering component 8 to filter the impurity in the air at the inside in-process of air-supply line 9 that flows through, promotes the air quality, reduces the filter pressure of filter 5 and uses, and electric telescopic handle 29 extends after using, utilizes the closing head 28 on the compressed particleboard 3 and the closing plate 11 on the grid net 18 to compress tightly ventilative board 25 and air-inlet grid 19 and seal, makes backward flow chamber 2, wind-guiding groove 10 and the chamber 17 internal seal that induced drafts reset the operation.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A biological clean safety cabinet with a closed inner space is characterized in that: comprises a cabinet body (15), one side of the outer side wall of the cabinet body (15) is provided with an inward sunken extension part (24), the extension part (24) is provided with an opening for the sample to pass in and out, the opening part is hinged with a transparent protection window (22), the hinged shaft of the transparent protection window (22) is positioned at the position of the top end of the opening, the transparent protection window (22) is symmetrically provided with a pair of limb jacks (23), the cabinet body (15) below the extension part (24) is horizontally welded with a workbench (20), the two sides of the top of the workbench (20) are symmetrically provided with a pair of air inlet grilles (19), the end face position of one end of the workbench (20) far away from the extension part (24) is vertically welded with a baffle (13), the outer side walls of the two sides of the baffle (13) are all welded with the inner side wall of the cabinet body (15), and the two ends of the baffle (13) respectively extend to the position of the upper end and the lower end position of the inside of the cabinet body (15), an air guide groove (10) is formed between one side, far away from the workbench (20), of the baffle plate (13) and the cabinet body (15), a ventilating plate (25) is horizontally welded between the cabinet body (15) above the extending portion (24) and the baffle plate (13), through holes (1) are arranged on the ventilating plate (25) in a rectangular array shape at equal intervals, a filter (5) is installed at the top of the ventilating plate (25), a pair of supporting blocks (12) are symmetrically arranged inside the cabinet body (15) at the position under the workbench (20) and the ventilating plate (25), electric telescopic rods (29) are vertically and upwards installed at the tops of the supporting blocks (12), a pressing plate (3) is connected between the output ends of the electric telescopic rods (29) at two sides under the ventilating plate (25), and blocking heads (28) matched with the through holes (1) are uniformly arranged on the pressing plate (3) at equal intervals, air guide holes (6) are formed in the laminated board (3) between every two adjacent plugging heads (28), a grid net (18) is connected between the output ends of electric telescopic rods (29) on two sides below the workbench (20), a pair of sealing plates (11) is symmetrically arranged at the tops of the grid nets (18) at positions right below air inlet grids (19) on two sides, a backflow cavity (2) is formed inside the cabinet body (15) above the ventilating plate (25), a working cavity (21) is formed inside the cabinet body (15) between the ventilating plate (25) and the workbench (20), a pair of air inlet pipes (9) used for supplying external fresh air are symmetrically arranged on the cabinet body (15) at the position of the working cavity (21), an air suction cavity (17) is formed inside the cabinet body (15) below the workbench (20), and the air suction cavity (17) and the backflow cavity (2) are respectively communicated with the upper end and the lower end of the air guide groove (10), the air conditioner is characterized in that a suction fan (14) is installed at the bottom end position inside the air suction cavity (17), an air outlet of the suction fan (14) extends to the bottom end position inside the air guide groove (10), and the top of the cabinet body (15) is connected with an exhaust pipe (4).

2. The biological cleaning safety cabinet with a closed inner space as claimed in claim 1, wherein: two air-supply line (9) are located the cabinet body (15) of extension (24) both sides respectively, the one end of air-supply line (9) extends to cabinet body (15) lateral wall position department and installs dust screen (27), air-supply line (9) other end extends to the inside one side that is close to baffle (13) of working chamber (21), and inserts on air-supply line (9) and is equipped with new trend filtering component (8).

3. The biological cleaning safety cabinet with a closed inner space as claimed in claim 1, wherein: the sealing plug is arranged on the transparent protection window (22) on the outer side of the limb insertion hole (23), the elastic connection sleeve (7) is connected to the transparent protection window (22) on the inner side of the limb insertion hole (23), and the elastic connection sleeve (7) is made of silica gel.

4. The biological cleaning safety cabinet with a closed inner space as claimed in claim 1, wherein: an ultraviolet germicidal lamp (26) is arranged on the inner side wall of the cabinet body (15) at the position of the backflow cavity (2).

5. The biological cleaning safety cabinet with a closed inner space as claimed in claim 1, wherein: supporting legs (16) are mounted at four corners of the bottom of the cabinet body (15).

6. The biological cleaning safety cabinet with a closed inner space as claimed in claim 2, wherein: fresh air filter component (8) support casing (32) that use including the outside, the top of air-supply line (9) is equipped with and is used for inserting the slot of establishing casing (32) and using, the both sides of casing (32) lateral wall all are equipped with bleeder vent (30) that are used for inside and air-supply line (9) to be linked together, the inside both sides of casing (32) all are equipped with filter screen (33), and the inside packing of casing (32) between filter screen (33) of both sides has active carbon filter layer (31), and the top of casing (32) is equipped with the handle.