CN114871234B - Movable biological safety type air exhaust efficient filtering device - Google Patents
Movable biological safety type air exhaust efficient filtering device Download PDFInfo
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- CN114871234B CN114871234B CN202210563773.5A CN202210563773A CN114871234B CN 114871234 B CN114871234 B CN 114871234B CN 202210563773 A CN202210563773 A CN 202210563773A CN 114871234 B CN114871234 B CN 114871234B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
- B01D46/0045—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding by using vanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
- B01L1/02—Air-pressure chambers; Air-locks therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a movable biological safety type air exhaust high-efficiency filtering device, which is characterized by comprising the following components: mounting a cabinet body; the sliding guide wheels are at least provided with four groups and are correspondingly and rotatably arranged at four corners of the lower end surface of the mounting cabinet body; the operation cavity fixing frame is arranged in the middle of the upper end face of the installation cabinet body, the operation cavity is divided into two working cavity positions from top to bottom through a layered partition plate, and one of the working cavity positions on the lower layer is used for standardizing experiment operation; the air exhaust detection assembly is transversely erected in the working cavity position on the upper layer and is communicated with the neutralization filtering assembly; and the surging discharge assembly transversely penetrates and is fixed in the operation chamber, and one end of the surging discharge assembly is communicated with the neutralization filtering assembly through the air exhaust detection assembly.
Description
Technical Field
The invention belongs to the technical field of biosafety cabinet equipment, and particularly relates to a movable biosafety type efficient exhaust filtering device.
Background
Because pharmacy trade and laboratory require the particularity to the environment, need use biological safety purifier to ensure the surrounding environment, the biological safety cabinet not only can avoid the laboratory environment to cause the pollution to the experimental materials, can guarantee the healthy of laboratory person moreover (mainly used prevents that the laboratory person from inhaling the experimental materials after volatilizing), prevent to volatilize the back poisonous, harmful experimental materials and spread in the laboratory environment, consequently biological safety exhaust purification system wide application in bio-pharmaceuticals trade and biological safety laboratory. The existing biosafety cabinet is usually provided with an air draft device (such as an exhaust fan) above the cabinet body to discharge experimental waste gas, but the air draft device does not have the functions of purifying and filtering harmful gas and does not have the safety guarantee functions of efficient filtering, online detection, leakage detection and the like, so that toxic waste gas can still be remained in the exhaust gas of the biosafety cabinet, and the use risk is greatly improved. Therefore, the technical personnel in the field provide a movable biosafety type air exhaust high-efficiency filter device to solve the problems in the background technology.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a movable biological safety type high efficiency filter equipment that airs exhaust, includes:
mounting a cabinet body;
the sliding guide wheels are at least provided with four groups and are correspondingly and rotatably arranged at four corners of the lower end face of the mounting cabinet body;
the operation cavity fixing frame is arranged in the middle of the upper end face of the installation cabinet body, the operation cavity is divided into two working cavity positions from top to bottom through a layered partition plate, and one of the working cavity positions on the lower layer is used for standardizing experiment operation;
the neutralization filtering component is embedded and fixed in the other working cavity position on the upper layer, and absorbs and filters the experimental waste gas in the working cavity position on the lower layer;
the air exhaust detection component is transversely erected in the working cavity position on the upper layer and is communicated with the neutralization filtering component; and
the surging discharge assembly transversely penetrates through and is fixed in the operation chamber, and one end of the surging discharge assembly is communicated with the neutralization filtering assembly through the air exhaust detection assembly;
wherein, carry out vertical absorption to going up and carry out neutralization filtration treatment through neutralization filtering component with the experimental waste gas in the working chamber position of lower floor to make surging the discharge subassembly and in time will filtering the harmless gaseous external discharge after the neutralization, in surging the discharge subassembly exhaust, the detection subassembly of bleeding can carry out interval nature exhaust detection or long-term effectual real-time supervision, in order to realize the pertinence emission work to the harmful waste gas of different concentrations.
Further, preferably, the neutralization filter assembly includes:
the sealing box seat is vertically fixed in an upper working cavity position in the operation cavity;
the device comprises a sealed box seat, a plurality of flow guide fan blades, a plurality of sealing box seats and a plurality of sealing box bodies, wherein the sealed box seat is provided with a lower end discharge port;
the filter screen element is coaxially fixed in the sealed box seat, an inner conduit is also coaxially fixed in the filter screen element, and the filter screen element is communicated with the discharge port through the inner conduit;
the central guide pipe is vertically and relatively rotatably arranged on the sealed box base in a penetrating way, and one end of the central guide pipe extends into the inner guide pipe;
a drive gear seat for directionally and rotationally driving the central conduit;
one end of the air supply calandria is rotatably sleeved with the central conduit, and the other end of the air supply calandria is communicated with an external air storage pump part.
Further, preferably, the method further comprises:
the flow guide disc seat is fixedly sleeved at one end of the central guide pipe, which is far away from the gas supply exhaust pipe, and the circumferential outer diameter of the flow guide disc seat is equal to the inner diameter of the pipe wall of the inner guide pipe in size;
the plurality of flow dividing pipes are arranged in a circumferential array and vertically penetrate through the flow guide disc seat, and a plurality of air vents are formed in each flow dividing pipe;
the side blade plates are provided with a plurality of side blades which are circumferentially distributed on the outer pipe wall of the central guide pipe;
the filter screen comprises a plurality of groups of active carbon rings which are vertically arranged, and the active carbon rings are coaxially arranged on a filter screen element; and
and the exhaust end seat is used for communicating the sealing box seat with the air exhaust detection assembly.
Further, preferably, the bleed air detection module includes:
the outer mounting frame is transversely fixed in an upper working cavity in the operation cavity;
the cross section of the inner air storage part is of a circular structure, and the left side, the right side and the upper side of the inner air storage part are respectively and correspondingly provided with an opening;
the conveying pipe is vertically communicated with an opening positioned above the inner gas storage piece, and the other end of the conveying pipe is communicated with an external detection device;
the inner flow guide part is coaxially fixed in the inner gas storage part and communicated with the conveying pipe, one side of the inner flow guide part is provided with a gas inlet, and part of gas introduced into the inner gas storage part is discharged into the inner flow guide part by the gas inlet;
and one end of the three-way valve is communicated with the opening on the right side of the inner gas storage part, one end of the three-way valve is vertically communicated with an outer discharge pipe and is connected with the neutralizing and filtering component through the outer discharge pipe, and the other end of the three-way valve is fixedly connected with the surging and discharging component.
Further, preferably, the method further comprises: the plugging shaft piece can be coaxially arranged in the inner flow guide piece in a relatively rotating manner, and one end of the plugging shaft piece is in sealing fit with the inner wall of the inner flow guide piece;
the cross section of the blocking shaft piece is of a semicircular structure.
Further, preferably, the surge tank assembly includes:
the outer shaft sleeve transversely penetrates through and is fixed on the outer mounting frame;
the mounting shaft seats are symmetrically distributed in the outer mounting frame and are positioned on one side of the outer shaft sleeve, and telescopic guide rods are rotatably arranged on the mounting shaft seats;
the rotary disk piece can be arranged on the mounting shaft seat in a relatively rotating mode, and the telescopic end of the telescopic guide rod is hinged with the rotary disk piece;
the elastic bag wall is coaxially attached to the outer sleeve, a rolling shaft is rotatably arranged at one end of the telescopic guide rod, and the rolling shaft is abutted against and contacted with the elastic bag wall.
Further, preferably, the method further comprises:
the fixed guide cavity transversely penetrates through and is fixed on the operation cavity and communicated with the outer shaft sleeve;
the drainage piece is coaxially and relatively rotatably arranged in the fixed guide cavity;
a driving motor for rotationally driving the drainage member.
Further, preferably, the positions of the drainage member close to the fixed guide cavity are both arc-shaped surfaces;
and a drainage cavity cover is also arranged on the fixed guide cavity.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, a plurality of groups of flow guide fan blades are arranged above the operating chamber to realize a flow guide effect and discharge experimental waste gas into a neutralizing and filtering assembly in a pair manner, meanwhile, a central conduit sends corresponding gas through a gas supply and discharge pipe to perform neutralizing treatment, the neutralized waste gas can be conveyed to an air extraction detection assembly from a filtering net piece, the air extraction detection assembly periodically conveys the experimental waste gas to a conveying pipe through the intermittent rotation effect of a plugging shaft piece on one hand, and an external detection device is used for detecting and analyzing the gas in the conveying pipe so as to perform periodic sampling detection aiming at the relatively low content concentration of toxic substances in the experimental waste gas; on the other hand, the exhaust detection assembly can continuously feed experimental waste gas through the conveying pipe for inspection under the local deflection action of the plugging shaft piece so as to realize the continuous monitoring of the waste gas with higher content concentration of toxic substances after the experiment; then the surge exhaust component can exhaust the safe and odorless gas in time.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic structural view of a single neutralization filter assembly of the present invention;
FIG. 3 is a schematic structural diagram of the single pump detection assembly of the present invention;
FIG. 4 is a schematic diagram of the surge exhaust assembly of the present invention;
in the figure: the device comprises a mounting cabinet body 1, a sliding guide wheel 2, an operation chamber 3, a neutralization filtering component 4, a sealed box seat 401, a guide fan blade 402, a filter screen component 403, a central guide pipe 404, a driving gear seat 405, an air supply discharge pipe 406, a guide disc seat 407, an exhaust end seat 408, an active carbon ring 409, a suction detection component 5, an external mounting frame 501, an internal air storage component 502, an internal guide component 503, a delivery pipe 504, a three-way valve 505, an external discharge pipe 506, a sealing shaft 507, a surge discharge component 6, an external shaft sleeve 601, a mounting shaft seat 602, a telescopic guide rod 603, a rotary disc component 604, an elastic bag wall 605, a rolling shaft 606, a fixed guide cavity 607, a driving motor 608 and a discharge cavity cover 609.
Detailed Description
Referring to fig. 1, in an embodiment of the present invention, a movable biosafety type efficient exhaust filtering device includes:
installing the cabinet body 1;
the sliding guide wheels 2 are at least provided with four groups and are correspondingly and rotatably arranged at four corners of the lower end face of the mounting cabinet body 1;
the operation cavity 3 is fixedly arranged in the middle of the upper end face of the installation cabinet body 1, the operation cavity 3 is vertically divided into two working cavity positions through a layered partition plate, and one of the working cavity positions on the lower layer is used for standardized experiment operation;
the neutralization filter component 4 is embedded and fixed in the other working cavity position on the upper layer, and the neutralization filter component 4 absorbs and filters the experimental waste gas in the working cavity position on the lower layer;
the air exhaust detection component 5 is transversely erected in the working cavity position on the upper layer and is communicated with the neutralization filtering component 4; and
the surging discharge assembly 6 transversely penetrates and is fixed in the operation chamber 3, and one end of the surging discharge assembly 6 is communicated with the neutralization filter assembly 4 through the air suction detection assembly 5;
wherein, carry out vertical absorption to going up and carry out neutralization filtration treatment through neutralization filtering component 4 with the experimental waste gas in the working chamber position of lower floor to make surging discharge assembly 6 in time will filter the harmless gaseous external discharge after the neutralization, in surging discharge assembly 6 exhausts, the detection subassembly 5 of bleeding can carry out interval nature exhaust detection or long-term effectual real-time supervision, in order to realize the pertinence emission work to the harmful waste gas of different concentration.
Referring to fig. 2, in the present embodiment, the neutralization filter assembly 4 includes:
a sealed box seat 401 vertically fixed in the upper working cavity position in the operation chamber 3;
at least two groups of guide vanes 402 are symmetrically arranged, and experimental waste gas is discharged upwards through the guide vanes 402 under the action of rotary drainage and is discharged into the sealed box base 401 through a lower end discharge port;
the filter screen 403 is coaxially fixed in the sealed box seat 401, and an inner conduit is also coaxially fixed in the filter screen 403 and communicated with the discharge port through the inner conduit;
a central conduit 404 vertically and relatively rotatably arranged on the sealed box seat 401 in a penetrating way, wherein one end of the central conduit 404 extends into the inner conduit;
a drive gear seat 405 for directionally rotationally driving the central conduit 404;
one end of the gas supply calandria 406 is rotatably sleeved with the central conduit 404, the other end of the gas supply calandria 406 is communicated with an external gas storage pump part (not shown in the figure), experimental waste gas is introduced into the inner conduit upwards through the guide fan blades, and meanwhile, neutralizing gas is injected into the gas supply calandria through the central conduit, so that the two gases are mutually flushed, the purification treatment of toxic waste gas is realized, and the toxic waste gas is filtered and discharged by the filter screen part.
As a preferred embodiment, further comprising:
the flow guide disc seat 407 is fixedly sleeved at one end of the central guide pipe 404 far away from the air supply discharge pipe 406, and the circumferential outer diameter of the flow guide disc seat 407 is equal to the inner diameter of the pipe wall of the inner guide pipe;
a plurality of flow dividing pipes are arranged in a circumferential array and vertically penetrate through the flow guide disc seat 407, and a plurality of air vents are formed in each flow dividing pipe; when the experimental waste gas is conveyed upwards through the shunt pipe, neutralizing gas can enter the shunt pipe through the air vent to be converged with the experimental waste gas, so that the neutralizing work coverage is ensured;
a plurality of side blades circumferentially distributed on the outer pipe wall of the central conduit 404; for assisting in directing the air stream upwards
A plurality of groups of activated carbon rings 409 are vertically arranged, and the activated carbon rings 409 are coaxially arranged on the filter screen member 403 and can effectively absorb and purify gas through the activated carbon rings; and
and the exhaust end seat 408 is used for communicating the sealed box seat 401 with the air suction detection assembly 5.
Referring to fig. 3, in the present embodiment, the pumping detection assembly 5 includes:
an outer mounting frame 501 transversely fixed in an upper working chamber position in the operation chamber 3;
the cross section of the inner air storage piece 502 is of a circular structure, and the left side, the right side and the upper side of the inner air storage piece are respectively and correspondingly provided with an opening;
a delivery pipe 504 vertically communicated with an opening positioned above the inner air storage piece 502, and the other end of the delivery pipe 504 is communicated with an external detection device (not shown in the figure);
the inner flow guide part 503 is coaxially fixed in the inner gas storage part 502 and is communicated with the conveying pipe 504, one side of the inner flow guide part 503 is provided with a gas inlet, and the gas inlet discharges part of gas introduced into the inner gas storage part 502 into the inner flow guide part 503;
one end of the three-way valve 505 is communicated with the right opening of the inner air storage member 502, one end of the three-way valve 505 is vertically communicated with an outer discharge pipe 506, the outer discharge pipe 506 is connected with the neutralization filter assembly 4, and the other end of the three-way valve 505 is fixedly connected with the surging discharge assembly 6.
In this embodiment, the method further includes: the plugging shaft part 507, the plugging shaft part 507 can be relatively rotatably and coaxially arranged in the inner flow guide part 503, and one end of the plugging shaft part 507 is in sealing fit with the inner wall of the inner flow guide part 503;
the cross section of the blocking shaft 507 is of a semicircular structure, the concentration of waste gas generated in the experiment is relatively high before and after the experiment is completed, the inner diversion piece can enable the exhaust end seat to be communicated with the conveying pipe under the action of local deflection, the conveying gas is monitored in real time by an external detection device, and the synchronous surging discharge assembly is in a slow discharge state; after a period of exhaust work, the experimental waste gas has relatively low apparent concentration and is in a safe discharge threshold range, the conveying pipe is controlled to convey the experimental waste gas quantitatively by the intermittent deflection of the plugging shaft piece, the experimental waste gas is detected, and the synchronous surging discharge assembly is in a surging high-flow discharge state.
Referring to fig. 4, in the present embodiment, the surge exhaust assembly 6 includes:
the outer shaft sleeve 601 transversely penetrates through and is fixed on the outer mounting rack 501;
the mounting shaft seats 602 are symmetrically distributed in the outer mounting rack 501 and located on one side of the outer shaft sleeve 601, and telescopic guide rods 603 are rotatably arranged on the mounting shaft seats 602;
the rotating disk 604 is arranged on the mounting shaft seat 601 in a relatively rotatable manner, and the telescopic end of the telescopic guide rod 603 is hinged with the rotating disk 604;
the elastic bag wall 605 is coaxially attached and arranged in the outer shaft sleeve 601, one end of the telescopic guide rod 603 is rotatably provided with a roller 606, the roller 606 is abutted against and contacted with the elastic bag wall 605, and the roller can continuously extrude and exhaust the elastic bag wall through the rotation driving of the rotary disc piece, so that the experimental waste gas discharged into the elastic bag wall can present a surge state, and a high drainage effect is achieved; meanwhile, the elastic capsule wall can be clamped and controlled by the fixed point of the rolling shaft, so that the flow can be adjusted.
As a preferred embodiment, the method further comprises the following steps:
a fixed guide cavity 607 transversely fixed on the operation chamber 3 in a penetrating manner and communicated with the outer shaft sleeve 601;
the drainage piece is coaxially and relatively rotatably arranged in the fixed guide cavity 607;
a drive motor 608 for rotationally driving the drain.
In this embodiment, the positions of the drainage member close to the fixed guide cavity 607 are both arc-shaped surfaces; the extrusion drainage effect is achieved to a certain extent, and gas backflow is prevented;
the fixed guide cavity 607 is also provided with a drainage cavity cover 609.
Specifically, in the biological safety type exhaust filtration, experimental waste gas in an operation chamber is introduced into a sealed box seat through a guide fan blade, neutralizing gas is fed in by a central guide pipe through an air supply exhaust pipe for neutralization treatment, the neutralizing gas is discharged upwards under the rotary guide of a side blade plate, the neutralizing gas is filtered through a filter screen piece, and meanwhile, an active carbon ring can carry out gas absorption and purification; defining the content concentration of toxic substances in the filtered experimental waste gas according to the end time before and after the experiment, thereby determining that the air extraction detection assembly carries out intermittent exhaust detection or long-term effective real-time monitoring on the experimental waste gas; the experimental waste gas which is not qualified can be sent into the neutralizing filter assembly again through the outer discharge pipe; and the gas qualified in the inspection is efficiently discharged by the surging discharge assembly.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (5)
1. The utility model provides a high-efficient filter equipment airs exhaust of movable biological safety type which characterized in that includes:
a cabinet body (1) is installed;
the four groups of sliding guide wheels (2) are arranged at least, and are correspondingly and rotatably arranged at the four corners of the lower end face of the mounting cabinet body (1);
the operation chamber (3) is fixedly arranged in the middle of the upper end face of the installation cabinet body (1), the operation chamber (3) is vertically divided into two working chamber positions through a layered partition plate, and one of the working chamber positions on the lower layer is used for standardized experiment operation;
the neutralizing filter assembly (4) is embedded and fixed in the other working cavity position on the upper layer, and the neutralizing filter assembly (4) absorbs and filters experimental waste gas in the working cavity position on the lower layer;
the air exhaust detection component (5) is transversely erected in the working cavity position on the upper layer and is communicated with the neutralization filtering component (4); and
the surging discharge assembly (6) transversely penetrates and is fixed in the operation chamber (3), and one end of the surging discharge assembly (6) is communicated with the neutralization filtering assembly (4) through the air suction detection assembly (5);
the experimental waste gas in the lower working cavity is vertically absorbed upwards through the neutralizing and filtering component (4) and is neutralized and filtered, so that the surging discharging component (6) can timely discharge the neutralized harmless gas outwards, and in the exhaust of the surging discharging component (6), the air exhaust detecting component (5) can perform interval exhaust detection or long-term effective real-time monitoring to realize the targeted discharge work of harmful waste gas with different concentrations;
the bleed air detection assembly (5) comprises:
the outer mounting frame (501) is transversely fixed in an upper working cavity position in the operation cavity (3);
the cross section of the inner air storage piece (502) is of a circular structure, and the left side, the right side and the upper side of the inner air storage piece are respectively and correspondingly provided with an opening;
the conveying pipe (504) is vertically communicated with an opening positioned above the inner air storage piece (502), and the other end of the conveying pipe (504) is communicated with an external detection device;
the inner flow guide part (503) is coaxially fixed in the inner gas storage part (502) and is communicated with the conveying pipe (504), one side of the inner flow guide part (503) is provided with a gas inlet, and part of gas introduced into the inner gas storage part (502) is discharged into the inner flow guide part (503) by the gas inlet;
one end of the three-way valve (505) is communicated with an opening on the right side of the inner air storage part (502), one end of the three-way valve (505) is vertically communicated with an outer discharge pipe (506) and is connected with the neutralizing and filtering component (4) through the outer discharge pipe (506), and the other end of the three-way valve (505) is fixedly connected with the surging discharge component (6);
further comprising: the plugging shaft piece (507), the plugging shaft piece (507) can be relatively and coaxially arranged in the inner flow guide piece (503) in a rotating way, and one end of the plugging shaft piece (507) is in sealing fit with the inner wall of the inner flow guide piece (503);
the cross section of the blocking shaft piece (507) is of a semicircular structure;
the surge exhaust assembly (6) comprises:
the outer shaft sleeve (601) transversely penetrates through and is fixed on the outer mounting rack (501);
the mounting shaft seats (602) are symmetrically distributed in the outer mounting frame (501) and are positioned on one side of the outer shaft sleeve (601), and telescopic guide rods (603) are rotatably arranged on the mounting shaft seats (602);
the rotary disk piece (604) is arranged on the mounting shaft seat (602) in a relatively rotating mode, and the telescopic end of the telescopic guide rod (603) is hinged with the rotary disk piece (604);
the elastic bag wall (605) is coaxially arranged in the outer shaft sleeve (601) in a fitting manner, one end of the telescopic guide rod (603) is rotatably provided with a rolling shaft (606), and the rolling shaft (606) is abutted against and contacted with the elastic bag wall (605).
2. The movable biosafety type air exhaust high-efficiency filtering device according to claim 1, characterized in that: the neutralizing filter assembly (4) comprises:
the sealed box seat (401) is vertically fixed in an upper working cavity position in the operation chamber (3);
the device comprises at least two groups of flow guide fan blades (402), wherein the flow guide fan blades (402) are symmetrically arranged, and experimental waste gas is discharged upwards through the rotation flow guide effect and is discharged into the sealed box base (401) through a lower end discharge port on the sealed box base;
the filter screen element (403) is coaxially fixed in the sealed box seat (401), and an inner conduit is also coaxially fixed in the filter screen element (403) and communicated with the discharge port through the inner conduit;
the central guide pipe (404) is vertically and relatively rotatably arranged on the sealed box seat (401) in a penetrating way, and one end of the central guide pipe (404) extends into the inner guide pipe;
a drive gear mount (405) for directionally rotationally driving the central conduit (404);
and one end of the air supply calandria (406) is rotatably sleeved with the central conduit (404), and the other end of the air supply calandria (406) is communicated with an external air storage pump part.
3. The movable biosafety type air exhaust high-efficiency filtering device according to claim 2, characterized in that: further comprising:
the flow guide disc seat (407) is fixedly sleeved at one end, far away from the air supply discharge pipe (406), of the central guide pipe (404), and the circumferential outer diameter of the flow guide disc seat (407) is equal to the inner diameter of the pipe wall of the inner guide pipe in size;
a plurality of flow dividing pipes are arranged in a circumferential array and vertically penetrate through the flow guide disc seat (407), and a plurality of air vents are formed in each flow dividing pipe;
a plurality of side blades circumferentially distributed on the outer pipe wall of the central conduit (404);
the activated carbon rings (409) are vertically arranged in multiple groups, and the activated carbon rings (409) are coaxially arranged on the filter screen element (403); and
and the exhaust end seat (408) is used for communicating the sealed box seat (401) with the air exhaust detection assembly (5).
4. The movable biosafety type air exhaust high-efficiency filtering device according to claim 1, characterized in that: further comprising:
the fixed guide cavity (607) transversely penetrates through and is fixed on the operation chamber (3) and communicated with the outer shaft sleeve (601);
the drainage piece is coaxially and relatively rotatably arranged in the fixed guide cavity (607);
a drive motor (608) rotationally driving the drain.
5. The movable biosafety type air exhaust high-efficiency filtering device according to claim 4, characterized in that: the positions close to the drainage piece and the fixed guide cavity (607) are both provided with arc surfaces; and a drainage cavity cover (609) is also arranged on the fixed guide cavity (607).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210563773.5A CN114871234B (en) | 2022-05-23 | 2022-05-23 | Movable biological safety type air exhaust efficient filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210563773.5A CN114871234B (en) | 2022-05-23 | 2022-05-23 | Movable biological safety type air exhaust efficient filtering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114871234A CN114871234A (en) | 2022-08-09 |
| CN114871234B true CN114871234B (en) | 2023-04-07 |
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| CN202210563773.5A Active CN114871234B (en) | 2022-05-23 | 2022-05-23 | Movable biological safety type air exhaust efficient filtering device |
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| CN209901911U (en) * | 2019-03-21 | 2020-01-07 | 青岛普莱斯特实验室设备有限公司 | Safe energy-saving fume hood for laboratory |
| CN212525363U (en) * | 2020-04-26 | 2021-02-12 | 湖南普信工程技术有限公司 | A environment-friendly fume chamber for laboratory |
| CN213288071U (en) * | 2020-07-29 | 2021-05-28 | 上海鑫玺实业有限公司 | Fume hood for laboratory convenient for flexibly dividing internal space |
| CN113856349A (en) * | 2021-11-16 | 2021-12-31 | 华北电力大学（保定） | Air port type biological air exhaust efficient filtering device |
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