CN218689585U

CN218689585U - Biological safety cabinet

Info

Publication number: CN218689585U
Application number: CN202222867411.3U
Authority: CN
Inventors: 孟坤; 李帅; 刘新成; 高才军; 王日成; 张可
Original assignee: Jinan Biobase Biotech Co ltd
Current assignee: Jinan Biobase Biotech Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-24
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a biosafety cabinet relates to biosafety operating means technical field. The utility model discloses an including the cabinet body, the internal first support frame that is provided with of cabinet, the air supply filter has been placed on the first support frame, and air supply filter top is provided with bellows, the soft dryer of bellows upper end fixedly connected with, soft dryer upper end fixedly connected with second support frame, the filter of airing exhaust has been placed on the second support frame, first support frame upper end is provided with vertical first lead screw, threaded connection has first nut on the first lead screw, first nut lower extreme fixedly connected with flange seat, the flange seat cover is located on the first lead screw, the bellows upper end is provided with the connecting strip, first lead screw passes the connecting strip just the connecting strip is located first nut with between the flange seat lower extreme. The utility model discloses a biosafety cabinet is convenient for change the filter.

Description

Biological safety cabinet

Technical Field

The utility model relates to a biological safety operating means technical field, concretely relates to biological safety cabinet.

Background

The biosafety cabinet is generally provided with an exhaust filter and an air supply filter, the exhaust filter is used for filtering air exhausted from the biosafety cabinet, the air supply filter is used for filtering air entering an operation area of the biosafety cabinet, and in order to keep high air filtering quality of the biosafety cabinet, the biosafety cabinet needs to regularly replace the exhaust filter and the air supply filter.

In the prior art, an air supply filter is placed between a support plate and an air box in a cabinet body and is clamped, the air box is fixedly connected with the support plate through a bolt, when the air supply filter is replaced, the bolt needs to be screwed out firstly, the air box still presses the air supply filter because the weight of the air box is heavy, the air supply filter cannot be directly pulled out from the lower surface of the air box, and the air box needs to be moved out firstly and put down and then moved out to supply the air supply filter; the soft air duct is arranged at the upper end of the air box, one end of the exhaust filter is clamped with the soft air duct, the other end of the exhaust filter is connected with the air outlet on the top plate of the cabinet body through a bolt, the exhaust filter directly falls to the upper end of the air box after the bolt is removed, therefore, an auxiliary tool for supporting the lower end of the exhaust filter is needed to be padded before the disassembly, then the bolt connected between the exhaust filter and the top plate of the cabinet body is screwed out, the exhaust filter and the soft air duct are separated, the exhaust filter can be taken out later, and the assembly and disassembly are very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a biosafety cabinet convenient to change filter.

In order to solve the technical problem, the utility model provides a technical scheme as follows:

the utility model provides a biological safety cabinet, the intelligent cabinet temperature adjusting device comprises a cabinet body, the internal first support frame that is provided with of cabinet, the air supply filter has been placed on the first support frame, and air supply filter top is provided with bellows, the soft dryer of bellows upper end fixedly connected with, soft dryer upper end fixedly connected with second support frame, the filter of airing exhaust has been placed on the second support frame, first support frame upper end is provided with vertical first lead screw, threaded connection has first nut on the first lead screw, first nut lower extreme fixedly connected with flange seat, the flange seat cover is located on the first lead screw, the bellows upper end is provided with the connecting strip, first lead screw passes the connecting strip just the connecting strip is located first nut with between the flange seat lower extreme, second support frame below is provided with the crossbeam, the cabinet body upper end is provided with vertical second lead screw downwards, threaded connection has the second nut on the second lead screw, the second lead screw passes the crossbeam just the second nut is located the crossbeam below.

Furthermore, the upper end of the cabinet body is downwards provided with a vertical extending plate, the extending plate is provided with a vertical strip hole, and the second support frame is provided with a limiting block matched with the strip hole.

Furthermore, a first opening is formed in the connecting strip, the first screw rod penetrates through the first opening, and the diameter of the first opening is larger than that of the part, located in the first opening, of the flange seat and smaller than the diameter of the lower end of the flange seat.

Further, the first opening hole is an L-shaped hole, and the first screw rod can move from one open end of the L-shaped hole to one closed end of the L-shaped hole in the horizontal direction.

Furthermore, the shape of connecting strip is the U-shaped, bellows upper end is provided with the U-shaped limiting plate, the both sides of the relative parallel of connecting strip insert in the U-shaped limiting plate and with U-shaped limiting plate telescopic connection, through the connecting strip is relative the U-shaped limiting plate carries out concertina movement and makes first lead screw is followed in the horizontal direction the opening one end in L shape hole is inserted the L shape is downthehole.

Furthermore, a second opening is formed in the cross beam, the second screw rod penetrates through the second opening, and the diameter of the second opening is larger than that of the second screw rod and smaller than that of the second nut.

Further, the cabinet body upper end is provided with the cavity downwards, cavity one side is provided with the opening, the cavity lower extreme is provided with U-shaped hole, second lead screw upper end is provided with the locating piece, second lead screw upper portion can be followed the opening part is followed U-shaped hole inserts in the cavity, just the locating piece can block in the upper portion in U-shaped hole.

Furthermore, a pressure sensor is arranged on the first support frame and at the upper end of the cabinet body respectively, a controller is connected to the pressure sensor, and an alarm is connected to the controller.

Compared with the prior art, the utility model discloses following beneficial effect has:

the biological safety cabinet of the utility model is characterized in that the first lead screw, the first nut and the flange seat are arranged on the first support frame, the connecting strip is arranged on the bellows, the flange seat is sleeved on the first lead screw, the upper end of the flange seat is fixedly connected with the lower end of the first nut, the connecting strip is positioned between the first nut and the lower end of the flange seat, and the lower end of the flange seat plays a role in limiting the connecting strip; the first nut is screwed upwards to drive the connecting strip and the air box to rise, when the first nut rises for a certain distance, the air box is just not attached to the air supply filter any longer, the first nut is not screwed any longer, the air box cannot descend due to the action of the flange seat, and then the air supply filter is taken out; the crossbeam plays a role in limiting the exhaust filter by arranging the crossbeam, the second screw rod and the second nut, the exhaust filter is arranged at the upper end of the second support frame, the second support frame is arranged at the upper end of the crossbeam, the crossbeam is arranged at the upper end of the second nut, the exhaust filter, the second support frame and the crossbeam descend under the action of self gravity by screwing the second nut downwards, when the exhaust filter descends until the exhaust filter is just not attached to the upper end of the cabinet body, the second nut is not screwed continuously, the crossbeam and the second support frame descend under the limitation of the second nut, and then the exhaust filter is directly taken out; through setting up soft dryer for there is great mobile space between bellows and the second support frame, not only can realize bellows and the ventilation of the filter of airing exhaust, moreover when lifting up bellows or descending the second support frame, can not cause the influence to other spare parts in the cabinet body. Above-mentioned structure can make things convenient for regular replacement air supply filter and air exhaust filter.

Drawings

FIG. 1 is an overall sectional view of the biosafety cabinet of the present invention;

FIG. 2 is a schematic view of a part of the structure of the air supply filter of the biosafety cabinet of the present invention;

FIG. 3 is a schematic structural view of a flange seat portion of the biosafety cabinet of the present invention;

FIG. 4 is a schematic view of a portion of the connecting strip of the biosafety cabinet of the present invention;

FIG. 5 is a schematic diagram of the cavity structure of the biosafety cabinet of the present invention;

FIG. 6 is a schematic view of the structure of the bio-safety cabinet according to the present invention in a compressed state of the air exhaust filter;

FIG. 7 is a schematic structural view of the taking-out process of the air exhausting filter of the biosafety cabinet of the present invention;

in the figure: the air-blowing type air-blowing filter cabinet comprises a cabinet body 1, an air box 2, a soft air duct 3, a cross beam 4, a second support frame 5, an air exhaust filter 6, a cavity 7, an extension plate 8, a U-shaped limiting plate 9, a connecting strip 10, a first lead screw 11, an air supply filter 12, a first support frame 13, a first nut 14, a flange seat 15, a hole 16L, a hole 17U, a positioning block 18, a second lead screw 19, a second nut 20, a limiting block 21 and a long strip hole 22.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The utility model provides a biological safety cabinet, as shown in fig. 1 to 7, including the cabinet body 1, be provided with first support frame 13 in the cabinet body 1, air supply filter 12 has been placed on first support frame 13, air supply filter 12 top is provided with

bellows

2, 2 upper ends fixedly connected with soft dryer 3 of bellows, 3 upper ends fixedly connected with second support frame 5 of soft dryer, air exhaust filter 6 has been placed on second support frame 5, first support frame 13 upper end is provided with vertical first lead screw 11, threaded connection has first nut 14 on the

first lead screw

11, 14 lower extreme fixedly connected with flange frame 15 of first nut, 15 covers of flange frame are located on

first lead screw

11, 2 upper ends of bellows are provided with connecting strip 10, first lead screw 11 passes connecting strip 10 and connecting strip 10 is located between first nut 14 and the 15 lower extremes of flange frame, 5 below is provided with

crossbeam

4, 1 upper end of the cabinet body is provided with vertical second lead screw 19 downwards, threaded connection has second nut 20 on the second lead screw 19, second lead screw 19 passes crossbeam 4 and second nut 20 is located crossbeam 4 below.

The biological safety cabinet of the utility model is characterized in that the first lead screw 11, the first nut 14, the flange seat 15 and the connecting strip 10 are arranged on the air box 2 on the first support frame 13, the flange seat 15 is sleeved on the first lead screw 11, the upper end of the flange seat 15 is fixedly connected with the lower end of the first nut 14, the connecting strip 10 is positioned between the first nut 14 and the lower end of the flange seat 15, and the lower end of the flange seat 15 plays a role in limiting the connecting strip 10; the connecting strip 10 and the air box 2 can be driven to rise by screwing the first nut 14 upwards, when the first nut 14 rises for a certain distance, the rising distance can be less than 1cm, so that the first nut 14 is not screwed when the air box 2 is just not attached to the air supply filter 12, the air box 2 cannot fall due to the action of the flange seat 15, and then the air supply filter 12 is taken out; by arranging the cross beam 4, the second screw rod 19 and the second nut 20, the cross beam 4 plays a role in limiting the exhaust filter 6, the exhaust filter 6 is arranged at the upper end of the second support frame 5, the second support frame 5 is arranged at the upper end of the cross beam 4, the cross beam 4 is arranged at the upper end of the second nut 20, the descending distance can be less than 1cm by screwing the second nut 20 downwards, the exhaust filter 6, the second support frame 5 and the cross beam 4 descend under the action of self gravity, when the exhaust filter 6 descends to just not be attached to the upper end of the cabinet body 1, the second nut 20 is not screwed continuously, the cross beam 4 and the second support frame 5 descend under the limitation of the second nut 20, and then the exhaust filter 6 is directly taken out; through setting up soft dryer 3 for there has been great mobile space between bellows 2 and the second support frame 5, not only can realize

bellows

2 and 6 ventilation of the filter 6 of airing exhaust, moreover when lifting up bellows 2 or descending second support frame 5, can not cause the influence to other spare parts in the cabinet body 1. The structure can facilitate the regular replacement of the air supply filter 12 and the air exhaust filter 6.

The utility model discloses an in the embodiment, 1 upper end of the cabinet body is provided with vertical extension board 8 downwards, is provided with vertical rectangular hole 22 on the extension board 8, be provided with on the second support frame 5 with rectangular hole 22 complex stopper 21. When the second nut 20 is screwed downwards, the second support frame 5 also descends, so the limiting block 21 on the second support frame 5 also moves downwards in the strip hole 22, preferably, when the limiting block 21 is located at the lower end in the strip hole 22, the downward screwing of the second bolt is stopped, at this time, the second support frame 5 is not only limited indirectly by the second nut 20 through the cross beam 4, but also the second support frame 5 is limited directly by the strip hole 22 on the extension plate 8, which is equivalent to the second support frame 5 being limited by two limiting functions, if the second bolt slides, the second support frame 5 can also be limited by the strip hole 22 on the extension plate 8, so that the fault tolerance rate is improved, and when the second bolt slides, the cross beam 4, the second support frame 5 and the exhaust filter 6 directly fall onto the air box 2 to affect the air box 2.

The utility model discloses an in the embodiment, seted up first trompil on the connecting strip 10, first lead screw 11 passes first trompil, and the diameter of first trompil is greater than the diameter that lies in the inside part of first trompil in the flange seat 15 and is less than flange seat 15 lower extreme diameter. One part of the flange seat 15 is positioned in the first opening, the other part of the flange seat 15 is positioned below the first opening, and the diameter of one part of the flange seat 15 positioned in the first opening is smaller than that of the first opening, because the first nuts 14 are screwed upwards one by one when the air supply filter 12 is replaced, after the first nuts 14 are screwed upwards, no matter how long the distance is, the connecting strip 10 is inclined, so a certain inclined space needs to be reserved in the first opening for one part of the flange seat 15 positioned in the first opening; the diameter of the lower end of the flange seat 15 is larger than that of the first opening hole, so that the lower end of the flange seat 15 can limit the connecting strip 10.

In an embodiment of the present invention, the first opening is an L-shaped hole 16, and the first lead screw 11 can move from one end of the opening of the L-shaped hole 16 to one end of the closed opening of the L-shaped hole 16 in the horizontal direction. Through the fact that the first opening is set to be L-shaped, the first lead screw 11 can be inserted into the connecting bar 10 from one end of the opening of the L-shaped hole 16, and the first lead screw 11 is moved continuously along the direction perpendicular to the one end of the opening of the L-shaped hole 16 until the first lead screw 11 is moved to one end of the L-shaped hole 16, compared with a mode that the air box 2 is lifted to a higher height, then the first opening on the connecting bar 10 is aligned with the first lead screw 11, and then the air box 2 is vertically placed downwards, the mode of the embodiment can place the first lead screw 11 into the connecting bar 10 without lifting the air box 2 to the higher height, and is labor-saving.

The utility model discloses an in the embodiment, the shape of connecting strip 10 is the U-shaped, and 2 upper ends of bellows are provided with U-shaped limiting plate 9, and the relative parallel both sides of connecting strip 10 insert in U-shaped limiting plate 9 and with U-shaped limiting plate 9 telescopic connection, carry out concertina movement through the relative U-shaped limiting plate 9 of connecting strip 10 and make first lead screw 11 insert L shape hole 16 from the opening one end in L shape hole 16 at the horizontal direction. Specifically, after the air box 2 is placed at the upper end of the air supply filter 12, the position of the air box 2 is adjusted forward and backward to enable the opening of the L-shaped hole 16 to be aligned with the first screw rod 11, then the connecting strip 10 is stretched out from the U-shaped limiting plate 9 to form a part, the first screw rod 11 enters the corner of the L-shaped hole 16, the position of the air box 2 is adjusted forward and backward again to enable the first screw rod 11 to move to the sealed end of the L-shaped connecting hole from the corner of the L-shaped connecting hole, and therefore connection between the connecting strip 10 and the first screw rod 11 is achieved.

In an embodiment of the present invention, the beam 4 has a second opening, the second lead screw 19 passes through the second opening, and the diameter of the second opening is larger than the diameter of the second lead screw 19 and smaller than the diameter of the second nut 20. The diameter of the second opening is larger than that of the second screw rod 19, because the second nuts 20 are screwed downwards one by one when the exhaust filter 6 is replaced, and therefore, after the first nut 20 is screwed upwards, the cross beam 4 is inclined no matter how long the screwing distance is, so that a certain inclined space needs to be left for the second screw rod 19 in the second opening; the diameter of the second nut 20 is larger than that of the second opening hole, so that the second nut 20 can limit the cross beam 4.

The utility model discloses an in the embodiment, 1 upper end of the cabinet body is provided with cavity 7 downwards, and cavity 7 one side is provided with the opening, and cavity 7 lower extreme is provided with

U-shaped hole

17, and 19 upper ends of second lead screw are provided with locating

piece

18, and 19 upper portions of second lead screw can follow the opening part and insert cavity 7 along U-shaped hole 17 in, and locating piece 18 can block on the upper portion in U-shaped hole 17. The upper end of the second screw rod 19 is provided with a positioning block 18, the positioning block 18 can be inserted into the cavity 7, and the surface area of the positioning plate is larger than that of the U-shaped hole 17, so that the positioning block 18 can be clamped at the upper part of the U-shaped hole 17, and the positioning block 18 cannot fall down from the U-shaped hole 17; specifically, in consideration of stability, the second screw rod 19 is arranged around the exhaust filter 6, so that the exhaust filter 6 cannot be directly horizontally drawn out when being taken out, and because the second screw rod 19 blocks the horizontal drawing, the exhaust filter 6 cannot be taken out after being tilted, which is inconvenient, but by arranging the cavity 7, the U-shaped hole 17 and the positioning block 18, when the exhaust filter 6 is replaced, the second nut 20 is screwed down, and after being loosened, the corresponding second screw rod 19 can obliquely move in the cross beam 4, and the tilt angle of the second screw rod 19 is adjusted, so that the positioning block 18 at the upper end of the second screw rod 19 moves towards the opening direction of the cavity 7 until leaving the cavity 7, the second nut 20 is continuously screwed down, the second nut 20 can drive the second screw rod 19 to move downwards until not blocking the exhaust filter 6, because of the positioning block 18, when the positioning block 18 contacts the cross beam 4, the screw rod cannot continuously move downwards, and therefore, the screw rod also plays a role of limiting, and when at least a plurality of second screw rods 19 on one plane are adjusted to the horizontal drawing the exhaust filter 6 out, and the exhaust filter 6 can not be directly blocked.

The utility model discloses an in the embodiment, all be provided with pressure sensor on the first support frame 13 and the cabinet body 1 upper end, the last controller that is connected with of pressure sensor is connected with the alarm on the controller. Through setting up pressure sensor, controller and alarm, pressure sensor is used for detecting first support frame 13 and air supply filter 12, the pressure between the filter 6 of airing exhaust of cabinet 1 upper end, can select a controller to connect an alarm and two pressure sensor for use, when pressure sensor detects that the pressure between first support frame 13 and air supply filter 12 and/or between the filter 6 of airing exhaust of cabinet 1 upper end does not reach a definite value, show that air supply filter 12 and/or air exhaust filter 6 are not compressed tightly this moment, and send the turn-on signal for the alarm through the controller, then the alarm begins to report to the police, play the warning effect.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a biosafety cabinet, its characterized in that, includes the cabinet body, the internal first support frame that is provided with of cabinet, the air supply filter has been placed on the first support frame, and air supply filter top is provided with bellows, bellows upper end fixedly connected with soft dryer, soft dryer upper end fixedly connected with second support frame, the filter of airing exhaust has been placed on the second support frame, first support frame upper end is provided with vertical first lead screw, threaded connection has first nut on the first lead screw, first nut lower extreme fixedly connected with flange seat, the flange seat cover is located on the first lead screw, the bellows upper end is provided with the connecting strip, first lead screw passes the connecting strip just the connecting strip is located first nut with between the flange seat lower extreme, second support frame below is provided with the crossbeam, the cabinet body upper end is provided with vertical second lead screw downwards, threaded connection has the second nut on the second lead screw, the second lead screw passes the crossbeam just the second nut is located the crossbeam below.

2. The biosafety cabinet according to claim 1, wherein a vertical extension plate is arranged at the upper end of the cabinet body downwards, a vertical long hole is arranged on the extension plate, and a limit block matched with the long hole is arranged on the second support frame.

3. The biosafety cabinet according to claim 1, wherein a first opening is formed in the connecting strip, the first lead screw penetrates through the first opening, and the diameter of the first opening is larger than the diameter of a portion, located in the first opening, of the flange seat and smaller than the diameter of the lower end of the flange seat.

4. A biosafety cabinet according to claim 3, wherein the first opening is an L-shaped hole, and the first lead screw is movable in a horizontal direction from an open end of the L-shaped hole to a closed end of the L-shaped hole.

5. The biosafety cabinet according to claim 4, wherein the connecting bar is U-shaped, a U-shaped limiting plate is disposed at the upper end of the bellows, two opposite parallel sides of the connecting bar are inserted into the U-shaped limiting plate and are telescopically connected with the U-shaped limiting plate, and the connecting bar is telescopically moved relative to the U-shaped limiting plate to enable the first screw rod to be horizontally inserted into the L-shaped hole from one end of the opening of the L-shaped hole.

6. The biosafety cabinet according to claim 1, wherein a second opening is formed in the cross beam, the second lead screw penetrates through the second opening, and the diameter of the second opening is larger than that of the second lead screw and smaller than that of the second nut.

7. The biosafety cabinet according to claim 4, wherein a cavity is arranged at the upper end of the cabinet body in a downward direction, an opening is arranged on one side of the cavity, a U-shaped hole is formed in the lower end of the cavity, a positioning block is arranged at the upper end of the second screw rod, the upper portion of the second screw rod can be inserted into the cavity from the opening along the U-shaped hole, and the positioning block can be clamped on the upper portion of the U-shaped hole.

8. The biosafety cabinet according to claim 1, wherein a pressure sensor is arranged on each of the first support frame and the upper end of the cabinet body, a controller is connected to the pressure sensor, and an alarm is connected to the controller.