CN210584987U - Biological safety cabinet for microbial detection - Google Patents
Biological safety cabinet for microbial detection Download PDFInfo
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- CN210584987U CN210584987U CN201921514357.6U CN201921514357U CN210584987U CN 210584987 U CN210584987 U CN 210584987U CN 201921514357 U CN201921514357 U CN 201921514357U CN 210584987 U CN210584987 U CN 210584987U
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- safety cabinet
- cabinet body
- air
- air curtain
- transparent baffle
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Abstract
The utility model discloses a biological safety cabinet for microbiological detection, including the safety cabinet body, be provided with the operation chamber on the safety cabinet body, the front side in operation chamber is provided with transparent baffle, has the clearance between transparent baffle's downside and the operation chamber mesa, still be provided with the closure plate of liftable on the safety cabinet body, the last edge of closure plate seted up with transparent baffle matched with draw-in groove, it is provided with lift stop gear still to cooperate between closure plate and the safety cabinet body, and when unexpected power failure, the staff only need stir the board of dialling in the lift stop gear and can make the closure plate rise automatically and close the clearance, and easy operation, action are rapid, and poisonous harmful bacteria escapes and detect the risk that the sample received external pollution when can effectively reduce the power failure.
Description
Technical Field
The utility model relates to a biological safety cabinet technical field, concretely relates to biological safety cabinet is used in microbial detection.
Background
The biological safety cabinet is the most basic safety protection equipment in a biological laboratory, is also necessary equipment in the microbial detection process of drinks such as jujube juice, milk and the like, has the working principle that air in the cabinet is sucked outwards to ensure that the interior of the cabinet is kept in a negative pressure state, workers are protected by vertical airflow, outside air enters the safety cabinet after being filtered by a high-efficiency air filter (HEPA filter) so as to avoid the pollution of a processed sample, and similarly, the air in the cabinet is also filtered by the HEPA filter and then is discharged into the atmosphere so as to protect the environment;
the existing biological safety cabinet is provided with a transparent baffle to improve the sealing performance of an operation cavity, and meanwhile, a gap of 20cm is formed between the lower edge of the transparent baffle and the table top of the operation cavity to facilitate the hand action of workers, when the biological safety cabinet works normally, gas in the operation cavity cannot overflow under negative pressure suction, the safety of the workers and the pollution prevention of samples are guaranteed, but when an accidental power failure occurs, the negative pressure suction airflow stops immediately, the danger of toxic and harmful bacteria escaping is generated at the moment, the existing common solution is physical isolation, namely, a baffle is additionally arranged to seal the gap between the transparent baffle and the table top of the operation cavity, the existing baffle is more troublesome to install and seal the gap, the gap is not convenient for the workers to rapidly seal, and the risk that the toxic and harmful bacteria escape and the samples are polluted by the outside can be increased.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the background art, the utility model aims to provide a biosafety cabinet is used in microbial detection, it has effectively solved the problem existing among the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a biological safety cabinet for microbial detection comprises a safety cabinet body, wherein an operation cavity is arranged on the safety cabinet body, a transparent baffle is arranged on the front side of the operation cavity, a gap is reserved between the lower side of the transparent baffle and the table top of the operation cavity, a liftable sealing plate is further arranged on the safety cabinet body, a clamping groove matched with the transparent baffle is formed in the upper edge of the sealing plate, and a lifting limiting mechanism is further arranged between the sealing plate and the safety cabinet body in a matched mode;
the lifting limiting mechanism comprises two lifting rods and a handle, the two lifting rods are fixedly arranged on the sealing plate and the safety cabinet body respectively, the two lifting rods are close to the left side and the right side of the sealing plate respectively, a T-shaped hole matched with the lifting rods is formed in the safety cabinet body, a first reset spring is further sleeved on each lifting rod, two ends of each first reset spring are abutted against the lower edge of the sealing plate and the safety cabinet body respectively, a pin rod mounting hole communicated with the T-shaped hole is further formed in the safety cabinet body, a pin rod is arranged in each pin rod mounting hole in a sliding mode, and a pin hole matched with the pin rod is formed in each lifting rod; the safety cabinet is characterized in that the handle is slidably provided with a shifting lever, a pull wire is further arranged between the pin rod and the shifting lever, winding pulleys are further arranged at two ends of the handle, the pull wire is wound around the winding pulleys, two ends of the pull wire are fixedly connected with the pin rod and the shifting lever respectively, and a second reset spring is sleeved on the pull wire between the pin rod and the safety cabinet body.
Furthermore, a closed plate accommodating cavity matched with the closed plate and a vertical sliding groove are formed in the safety cabinet body, and the vertical sliding groove is communicated with the closed plate accommodating cavity.
Furthermore, a buffer material layer is fixedly arranged on the bottom surface of the inner side of the clamping groove.
Furthermore, the material of the buffer material layer is rubber.
Further, the first return spring and the second return spring are both compression springs.
Furthermore, the two ends of the driving lever are respectively and fixedly provided with a sliding block, and the handle is provided with a sliding groove matched with the sliding block.
Further, still be provided with passive air curtain mechanism on the safety cabinet body, passive air curtain mechanism is including seting up in the operation intracavity and being on a parallel with transparency's air curtain pipe mounting groove, the built-in air curtain pipe that is equipped with of air curtain pipe mounting groove, air curtain union coupling have air feeder and air curtain pipe to go up to be provided with the air-out gap along length direction, and the length in air-out gap equals transparency's length.
Furthermore, the air supply device comprises an air bag box fixedly arranged at two sides of the safety cabinet body, an inflation and deflation air bag is placed in the air bag box, the inflation and deflation air bag is connected with the air curtain pipe through a communicating pipe, and a normally closed electromagnetic valve electrically connected with a power supply of the safety cabinet body is arranged on the communicating pipe.
Furthermore, the inflation and deflation air bag is connected with an inflation and deflation nozzle extending to the outer side of the air bag box.
Further, the airbag box is transparent.
The utility model discloses following beneficial technological effect has: the utility model discloses in applied the closure plate of liftable and the lift stop gear of cooperation setting between closure plate and safety cabinet body, when the unexpected power failure, the staff only need stir and dial the board and can make the closure plate rise automatically and the closure gap under first reset spring's drive, easy operation, action rapidly, poisonous and harmful fungus effusion and detection sample receive external pollution's risk when can effectively reducing the power failure.
Drawings
Fig. 1 is a front view of an embodiment of the present invention;
fig. 2 is a schematic structural view of a lifting limiting mechanism according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic view of the overall structure of a closing plate according to an embodiment of the present invention;
fig. 5 is a schematic structural view of the handle in a top view according to an embodiment of the present invention;
fig. 6 is a schematic structural view of the passive air curtain mechanism in the top view of the embodiment of the present invention;
fig. 7 is a schematic view of an electrical connection relationship of a normally closed solenoid valve according to an embodiment of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-7, the biosafety cabinet for microbial detection according to the embodiment includes a safety cabinet body 1, an operation cavity is provided on the safety cabinet body 1, a transparent baffle 2 is provided at the front side of the operation cavity, a gap is provided between the lower edge of the transparent baffle 2 and the table top of the operation cavity, a liftable sealing plate 3 is further provided on the safety cabinet body 1, a clamping groove 4 matched with the transparent baffle 2 is provided on the upper edge of the sealing plate 3, and a lifting limiting mechanism is further provided between the sealing plate 3 and the safety cabinet body 1 in a matching manner;
the lifting limiting mechanism comprises two lifting rods 5 and a handle 6 which are fixedly arranged on the sealing plate 3 and the safety cabinet body 1 respectively, the two lifting rods 5 are close to the left side and the right side of the sealing plate 3 respectively, a T-shaped hole 7 matched with the lifting rod 5 is formed in the safety cabinet body 1, a first reset spring 8 is further sleeved on the lifting rod 5, the first reset spring 8 is located in the thick part of the T-shaped hole 7, two ends of the first reset spring 8 are respectively abutted against the lower edge of the sealing plate 3 and the safety cabinet body 1, the first reset spring 8 can be a 304 stainless steel pressure spring with the wire diameter of 0.5mm, the outer diameter of 10mm and the length of 305mm, a pin rod mounting hole 9 communicated with the T-shaped hole 7 is further formed in the safety cabinet body 1, the pin rod mounting hole 9 is horizontal, a pin rod 10 is slidably arranged in the pin rod mounting hole 9, and a pin hole 11 matched with the pin rod 10 is formed in the; the handle 6 is provided with a shifting lever 12 in a sliding manner, a stay wire 13 is further arranged between the pin rod 10 and the shifting lever 12, the stay wire 13 is a nylon wire, winding pulleys 14 are further arranged at two ends of the handle 6, the stay wire 13 winds the winding pulleys 14, two ends of the stay wire 13 are respectively tied on the pin rod 10 and the shifting lever 12, a second reset spring 15 is sleeved on the stay wire 13 between the pin rod 10 and the safety cabinet body 1, and the second reset spring 15 can be made of 304 stainless steel pressure springs with the wire diameter of 0.3mm, the outer diameter of 6mm and the length of 40 mm.
Offer on the safety cabinet body 1 and hold chamber and vertical chute 16 with the closing plate 3 matched with closing plate, vertical chute 16 holds the chamber with the closing plate and is linked together, the last edge of vertical chute 16 is higher than the lower edge of transparent baffle 2, the material of closing plate 3 is plastics, it has buffer material layer 17 to bond on the inboard bottom surface of draw-in groove 4, buffer material layer 17's material is rubber, buffer material layer 17 can alleviate the collision between closing plate 3 and the transparent baffle 2, avoid transparent baffle 2 and closing plate 3's damage.
Both ends of the driving lever 12 are respectively fixedly bonded with a sliding block 18, a sliding groove 19 matched with the sliding block 18 is formed in the handle 6, the handle 6 is close to the left side or the right side of the safety cabinet body 1 and is fixed on the safety cabinet body 1 through screws, and the handle 6 is prevented from being located in the middle of the safety cabinet body 1 and further influencing the daily operation of workers.
Still be provided with passive air curtain mechanism on the safety cabinet body 1, passive air curtain mechanism is including seting up in the operation intracavity and being on a parallel with transparent baffle 2's air curtain pipe mounting groove 20, the built-in air curtain pipe 21 that is equipped with of air curtain pipe mounting groove 20, air curtain pipe 21 is connected with and is provided with air-out gap 22 along length direction on air feeder and the air curtain pipe 21, air-out gap 22 is located the arc top department of air curtain pipe 21 outer peripheral face, the length of air-out gap 22 equals transparent baffle 2's length, the width of air-out gap 22 is not more than 3mm, guarantee air curtain pipe 21 normal air-out everywhere, air curtain pipe mounting groove 20 and air curtain pipe 21 all are located transparent baffle 2's rear.
The air supply device comprises air bag boxes 23 fixedly arranged on two sides of the safety cabinet body 1, air bags 24 for inflation and deflation are placed in the air bag boxes 23, the air bags 24 for inflation and deflation are connected with the air curtain pipe 21 through a communication pipe 25, a normally closed electromagnetic valve 26 electrically connected with a power supply of the safety cabinet body 1 is arranged on the communication pipe 25, when the safety cabinet body 1 normally works, the normally closed electromagnetic valve 26 is powered on and is in a state of closing the communication pipe 25, after the safety cabinet body 1 is powered off, electric equipment such as a fan and the like on the safety cabinet body 1 is powered off, the normally closed electromagnetic valve 26 is powered off, the communication pipe 25 is switched on, pressure air stored in the air bags 24 for inflation and deflation enters the air curtain pipe 21 through the communication pipe 25 and is upwards sprayed out, a gas barrier is formed between the transparent baffle plate 2; fill to be connected with on the gassing gasbag 24 and extend to the gassing mouth 27 in the gasbag case 23 outside, thereby the replenishment of gaseous in the gassing gasbag 24 is filled in realization to the small-size air compressor of accessible, trachea etc. connection gassing mouth 27, and gasbag case 23 is transparent in addition, makes things convenient for people to observe the inflation state who fills gassing gasbag 24, and gasbag case 23 can adopt the ya keli material to make.
The working principle of the embodiment is as follows: when the safety cabinet body 1 is normally operated, the closing plate 3 is kept in the closing plate accommodating cavity, after the safety cabinet body 1 is powered off, the air curtain pipe 21 firstly sprays vertical upward air flow, an air curtain is formed between the transparent baffle plate 2 and the operating cavity table board, then a worker starts to react, two hands move out of the operating cavity, one hand holds the handle 6, four fingers except thumbs hook the deflector rod 12, the deflector rod 12 drives the pin rod 10 to be separated from the pin hole 11 on the lifting rod 5 through the pull wire 13, the closing plate 3 is rapidly bounced upwards along the vertical chute 16 under the action of the first return spring 8 until the lower edge of the transparent baffle plate 2 is completely clamped into the clamping groove 4 on the closing plate 3, at the moment, the physical sealing of the gap between the transparent baffle plate 2 and the operating cavity table board is finished, the escape of toxic and harmful bacteria contained in a sample in the operating cavity and the pollution of the sample in the operating cavity by external air, compared with the prior art, the sealing process is very simple and rapid, and the handle 6 and the shifting lever 12 are used for triggering, so that the mistaken touch in the daily activity process can be effectively prevented;
when the safety cabinet body 1 is restarted after a call is received, firstly, a power supply of the safety cabinet body 1 is switched on to enable the safety cabinet body 1 to generate safe airflow for maintaining normal operation, then the upper edge of the closing plate 3 is held to press down the closing plate 3, the lifting rod 5 descends, when the pin hole 11 in the lifting rod 5 is aligned with the pin rod 10, the pin rod 10 is automatically clamped into the pin hole 11 under the action of the second reset spring 15, the lifting rod 5 and the closing plate 3 are limited, and at the moment, the safety cabinet body 1 can be normally operated and operations such as microorganism detection and the like can be executed in the operation cavity.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. A biological safety cabinet for microbial detection comprises a safety cabinet body, wherein an operation cavity is arranged on the safety cabinet body, a transparent baffle is arranged on the front side of the operation cavity, and a gap is reserved between the lower side of the transparent baffle and the table top of the operation cavity;
the lifting limiting mechanism comprises two lifting rods and a handle, the two lifting rods are fixedly arranged on the sealing plate and the safety cabinet body respectively, the two lifting rods are close to the left side and the right side of the sealing plate respectively, a T-shaped hole matched with the lifting rods is formed in the safety cabinet body, a first reset spring is further sleeved on each lifting rod, two ends of each first reset spring are abutted against the lower edge of the sealing plate and the safety cabinet body respectively, a pin rod mounting hole communicated with the T-shaped hole is further formed in the safety cabinet body, a pin rod is arranged in each pin rod mounting hole in a sliding mode, and a pin hole matched with the pin rod is formed in each lifting rod; the safety cabinet is characterized in that the handle is slidably provided with a shifting lever, a pull wire is further arranged between the pin rod and the shifting lever, winding pulleys are further arranged at two ends of the handle, the pull wire is wound around the winding pulleys, two ends of the pull wire are fixedly connected with the pin rod and the shifting lever respectively, and a second reset spring is sleeved on the pull wire between the pin rod and the safety cabinet body.
2. The biological safety cabinet for detecting microorganisms according to claim 1, wherein the safety cabinet body is provided with a closing plate accommodating cavity matched with the closing plate and a vertical sliding groove, and the vertical sliding groove is communicated with the closing plate accommodating cavity.
3. The biosafety cabinet for detecting microorganisms according to claim 1, wherein a buffer material layer is fixedly arranged on the inner bottom surface of the clamping groove.
4. The biosafety cabinet for detecting microorganisms according to claim 3, wherein the material of the buffer material layer is rubber.
5. The biosafety cabinet for detecting microorganisms of claim 1, wherein the first return spring and the second return spring are compression springs.
6. The biosafety cabinet for detecting microorganisms according to claim 1, wherein sliding blocks are fixedly arranged at two ends of the deflector rod respectively, and a sliding groove matched with the sliding blocks is formed in the handle.
7. The biological safety cabinet for detecting microorganisms according to claim 1, wherein the safety cabinet body is further provided with a passive air curtain mechanism, the passive air curtain mechanism comprises an air curtain pipe installation groove which is opened in the operation cavity and is parallel to the transparent baffle, an air curtain pipe is arranged in the air curtain pipe installation groove, the air curtain pipe is connected with an air supply device, an air outlet gap is arranged on the air curtain pipe along the length direction, and the length of the air outlet gap is equal to the length of the transparent baffle.
8. The biological safety cabinet for detecting microorganisms according to claim 7, wherein the air supply device comprises an air bag box fixedly arranged at two sides of the safety cabinet body, an inflation/deflation air bag is arranged in the air bag box, the inflation/deflation air bag is connected with the air curtain pipe through a communicating pipe, and a normally closed electromagnetic valve electrically connected with a power supply of the safety cabinet body is arranged on the communicating pipe.
9. The biosafety cabinet for detecting microorganisms according to claim 8, wherein the inflation/deflation air bag is connected with an inflation/deflation nozzle extending to the outside of the air bag box.
10. The biosafety cabinet for detecting microorganisms of claim 8, wherein the airbag box is transparent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921514357.6U CN210584987U (en) | 2019-09-12 | 2019-09-12 | Biological safety cabinet for microbial detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921514357.6U CN210584987U (en) | 2019-09-12 | 2019-09-12 | Biological safety cabinet for microbial detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210584987U true CN210584987U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921514357.6U Active CN210584987U (en) | 2019-09-12 | 2019-09-12 | Biological safety cabinet for microbial detection |
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| Country | Link |
|---|---|
| CN (1) | CN210584987U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588575A (en) * | 2021-07-27 | 2021-11-02 | 刘芳 | Biological detector of biological safety cabinet |
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2019
- 2019-09-12 CN CN201921514357.6U patent/CN210584987U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588575A (en) * | 2021-07-27 | 2021-11-02 | 刘芳 | Biological detector of biological safety cabinet |
| CN113588575B (en) * | 2021-07-27 | 2024-02-27 | 湖南江丰现代实验室有限公司 | Biological safety cabinet biological detector |
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