CN212663587U - Gaseous high efficiency filter biological safety cabinet - Google Patents
Gaseous high efficiency filter biological safety cabinet Download PDFInfo
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- CN212663587U CN212663587U CN202020667976.5U CN202020667976U CN212663587U CN 212663587 U CN212663587 U CN 212663587U CN 202020667976 U CN202020667976 U CN 202020667976U CN 212663587 U CN212663587 U CN 212663587U
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Abstract
The utility model provides a gas high-efficiency filtering biological safety cabinet, which comprises a negative pressure operation chamber, a gas collection chamber arranged below the negative pressure operation chamber, filter chambers symmetrically arranged at two sides of the negative pressure operation chamber and a gas transmission chamber arranged above the negative pressure operation chamber; the utility model adopts the mode that the air pump and the air transmission fan are respectively arranged in the filter chamber and the air transmission chamber, the negative pressure in the filter chamber and the positive pressure in the air transmission chamber are enhanced, the air collection efficiency and the air transmission efficiency are ensured, and the problem that the gas fluidity in the negative pressure operation chamber is insufficient and the polluted gas is easy to leak due to the arrangement of the high-efficiency air filter is avoided; furthermore, the mode that filter chambers are symmetrically arranged on two sides of the negative pressure operation chamber is adopted, the stability of the negative pressure environment in the negative pressure operation chamber is guaranteed, meanwhile, the gas in the negative pressure operation chamber is drained towards two sides, and the problem that the gas is easy to leak from the middle when the gas stays in the middle due to overlong length is avoided.
Description
Technical Field
The utility model relates to a biological safety cabinet technical field especially relates to a gaseous high efficiency filter biological safety cabinet.
Background
When the laboratory materials that the laboratory staff has infection, toxicity, volatility are operated, need operate in the biological safety cabinet, and the biological safety cabinet not only can avoid the laboratory environment to cause the pollution to the laboratory materials, can guarantee the healthy of laboratory staff in addition (mainly used prevents that the laboratory staff from inhaling the laboratory materials after volatilizing), prevents to volatilize the back poisonous, harmful laboratory materials and spreads to the laboratory environment.
The existing biological safety cabinet comprises a cabinet body, wherein supporting legs are arranged at the bottom of the cabinet body, universal wheels are arranged at the bottoms of the supporting legs, and an air draft device (such as an air draft fan) is arranged above the cabinet body. The cabinet is internally provided with a negative pressure operation chamber with an opening at one side, an ultraviolet lamp is arranged in the negative pressure operation chamber, separation glass is arranged at the opening of the negative pressure operation chamber, and the separation glass is vertically connected with the opening of the negative pressure operation chamber in a sliding manner. The general operation of the laboratory worker using the biosafety cabinet is as follows:
(1) before the experiment, the laboratory technician pulls the barrier glass to the bottommost part, and turns on the ultraviolet lamp and the air draft device, the ultraviolet lamp carries out sterilization and disinfection on the cabinet body, and the air draft device extracts toxic and harmful volatile gas in the negative pressure operation room;
(2) during the experiment, keep updraft ventilator work, the experimenter promotes the vertical upwards slip of separation glass, only stretches into the experiment in the negative pressure control room with both hands.
When the laboratory technician is in the experiment, because the interior air current of negative pressure control chamber flows and depends on the updraft ventilator that is located cabinet body top, so the interior air current flow stability of negative pressure control chamber is poor, especially is close to the air current at negative pressure control chamber middle part, produces the excessive problem of air current from the middle part easily, and then produces the experiment easily and pollute.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gaseous high efficiency filtration biosafety cabinet that airflow flow stability is good to prior art's defect and not enough.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a gas high-efficiency filtering biological safety cabinet, which comprises a movable supporting leg and a cabinet body arranged on the movable supporting leg, wherein the cabinet body comprises a negative pressure operating chamber with an opening at one side, a gas collection chamber arranged below the negative pressure operating chamber, filter chambers symmetrically arranged at two sides of the negative pressure operating chamber and a gas transmission chamber arranged above the negative pressure operating chamber, the outer wall of the cabinet body is provided with a vent communicated with the outside, the negative pressure operating chamber is respectively communicated with the gas transmission chamber and the gas collection chamber, the gas collection chamber is communicated with the filter chambers, the filter chambers are respectively communicated with the vent and the gas transmission chamber, the gas collection chamber comprises a front side gas collection chamber and a rear side gas collection chamber which are mutually independent and communicated with two sides, the filter chambers are symmetrically arranged below the negative pressure operating chamber, an outer air exhaust high-efficiency air filter and an air suction pump positioned below the outer air exhaust high-efficiency air filter, the air inlet end of the air suction pump is respectively communicated with the front side air collection chamber and the rear side air collection chamber, the air outlet end of the air suction pump is opposite to the air inlet end of the outer air exhaust efficient air filter, the air transmission chamber is communicated with the negative pressure operation chamber through the inner air exhaust efficient air filter, an air transmission fan used for supplying air to the inner air exhaust efficient air filter is arranged in the air transmission chamber, the air transmission fan is connected with a motor installed on the outer wall of the top of the cabinet body, and the air transmission amount of the air transmission chamber to the negative pressure operation chamber is smaller than the air transmission amount of the negative pressure operation chamber to the air collection chamber.
Preferably, a middle partition plate is arranged between the front side air collection chamber and the rear side air collection chamber.
Preferably, the air inlet ends of the front air collecting chamber and the rear air collecting chamber are provided with air inlet plates for blocking operating tools from falling in, and a plurality of air inlet holes or a plurality of elongated openings which are arranged in parallel are uniformly distributed on the air inlet plates.
Preferably, the air inlet plate is detachably arranged at the air inlet ends of the front side air collecting chamber and the rear side air collecting chamber.
Preferably, the ventilation opening is formed in the outer wall of the top of the cabinet body, the ventilation opening and the air outlet end of the filtering chamber are arranged oppositely, and a gas flow distributing opening communicated with the gas transmission chamber is formed in the side wall of the air outlet end of the filtering chamber.
Preferably, still including being used for providing the gaseous slowly-releasing wind subassembly of continuous slowly-releasing, slowly-releasing wind subassembly sets up on the external wall of cabinet, and be located the middle part of front side collection chamber, slowly-releasing wind subassembly is including demountable installation casing on the external wall of cabinet and installation miniature fan in the casing, be provided with the air intake on the bottom of casing, be provided with a plurality of slowly-releasing air outlets on the top surface of casing, miniature fan's air inlet end and air-out end are just right respectively the air intake with slowly-releasing air outlet, miniature fan's air-out end with be provided with between the slowly-releasing air outlet and be used for cutting off the filter pulp of casing inner chamber, the slowly-releasing air outlet is minor diameter current-limiting gas.
Preferably, ultraviolet lamps for sterilization are symmetrically arranged on the inner side wall of the negative pressure operation chamber.
Preferably, the operation port of the negative pressure operation chamber is provided with vertically liftable separation glass, and the cabinet body is provided with a vertical guide groove for accommodating the separation glass.
The utility model discloses following beneficial effect has been gained for prior art:
1. the gas high-efficiency filtering biosafety cabinet provided by the utility model adopts the mode that the air suction pump and the gas transmission fan are respectively arranged in the filtering chamber and the gas transmission chamber, so as to enhance the negative pressure in the filtering chamber and the positive pressure in the gas transmission chamber, ensure the gas collection efficiency and the gas transmission efficiency, and avoid the problem that the gas mobility in the negative pressure operation chamber is insufficient and the polluted gas is easy to leak due to the arrangement of the high-efficiency air filter; furthermore, the mode that filter chambers are symmetrically arranged on two sides of the negative pressure operation chamber is adopted, the stability of the negative pressure environment in the negative pressure operation chamber is guaranteed, meanwhile, the gas in the negative pressure operation chamber is drained towards two sides, and the problem that the gas is easy to leak from the middle when the gas stays in the middle due to overlong length is avoided.
2. The utility model provides an adopt on cabinet body outer wall and be located the middle part position of front side collection chamber and set up the mode of slowly-releasing wind subassembly among the gaseous high efficiency filtration biosafety cabinet for operating personnel's the in-person area (be the middle part position of negative pressure control chamber promptly) is applyed by the slowly-releasing breeze after the current-limiting, provides make-up gas promptly, avoids because operating personnel's health blocks that external wind gets into the problem that leads to the polluted air to move towards the human body easily in the negative pressure control chamber, has reduced the risk.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view (I) of the overall structure of the gas high-efficiency filtering biosafety cabinet of the present invention;
FIG. 2 is a schematic view (II) of the overall structure of the gas high-efficiency filtering biosafety cabinet of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a cross-sectional view of FIGS. 1 and 2;
FIG. 5 is the slow release wind assembly of FIGS. 1 and 2;
the air conditioner comprises a movable supporting leg 1, a cabinet body 2, a barrier glass 3, a negative pressure operation chamber 4, a filter chamber 5, an air transmission chamber 6, a vent 7, an air collection chamber on the front side 8, an air collection chamber on the rear side 9, an air exhaust efficient air filter outside 10, an air suction pump 11, an air exhaust efficient air filter inside 12, an air transmission fan 13, a motor 14, a middle partition plate 15, an air inlet plate 16, a gas shunting port 17, a slow release air component 18, a shell 19, a micro fan 20, an air inlet 21, a slow release air outlet 22 and filter cotton 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
An object of the utility model is to provide a gaseous high efficiency filtration biosafety cabinet that airflow flow stability is good to prior art's defect and not enough.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-4, the utility model provides a gas high-efficiency filtering biosafety cabinet, which comprises a movable supporting leg 1 and a cabinet body 2 arranged on the movable supporting leg 1, wherein the cabinet body 2 comprises a negative pressure operation chamber 4 with an opening at one side, a gas collection chamber arranged below the negative pressure operation chamber 4, filter chambers 5 symmetrically arranged at two sides of the negative pressure operation chamber 4 and a gas transmission chamber 6 arranged above the negative pressure operation chamber 4, a vent 7 communicated with the outside is arranged on the outer wall of the cabinet body 2, the negative pressure operation chamber 4 is respectively communicated with the gas transmission chamber 6 and the gas collection chamber, the gas collection chamber is communicated with the filter chamber 5, the filter chamber 5 is respectively communicated with the vent 7 and the gas transmission chamber 6, the gas collection chamber comprises a front side gas collection chamber 8 and a rear side gas collection chamber 9 which are mutually independently communicated with the filter chambers 5 at two sides and symmetrically arranged below the negative pressure operation chamber 4, an external air exhaust high-, the air inlet end of the air suction pump 11 is respectively communicated with the front side air collection chamber 8 and the rear side air collection chamber 9, the air outlet end of the air suction pump 11 is arranged opposite to the air inlet end of the outer air exhaust efficient air filter 10, the air transmission chamber 6 is communicated with the negative pressure operation chamber 4 through the inner air exhaust efficient air filter 12, an air transmission fan 13 used for supplying air to the inner air exhaust efficient air filter 12 is arranged in the air transmission chamber 6, the air transmission fan 13 is connected with a motor 14 installed on the outer wall of the top of the cabinet body 2, and the air transmission amount of the air transmission chamber 6 to the negative pressure operation chamber 4 is smaller than the air transmission amount of the negative pressure operation chamber 4 to the air collection chamber.
The outer air exhaust efficient air filter 10, the air suction pump 11, the inner air exhaust efficient air filter 12 and the air delivery fan 13 are all devices in the prior art, and proper power can be selected according to the size of the biological safety cabinet, preferably, the working power of the outer air exhaust efficient air filter 10 is greater than that of the inner air exhaust efficient air filter 12; the working process is as follows: firstly, closing a negative pressure operation chamber 4, and disinfecting the interior of the negative pressure operation chamber 4, wherein the closing of the negative pressure operation chamber 4 can be opened and closed by adopting the following separation glass 3, and also can be opened and closed by adopting other door plates with openings for closing the negative pressure operation chamber 4, and the disinfection work can place an external ultraviolet device in the negative pressure operation chamber 4 or disinfect and disinfect by using an ultraviolet lamp placed in the negative pressure operation chamber 4 as follows; secondly, after sterilization and disinfection are completed or during the process, an outer air exhaust efficient air filter 10, an air suction pump 11, an inner air exhaust efficient air filter 12 and an air transmission fan 13 are opened, circulating air flow is formed in the negative pressure operation chamber 4, so that pollution gas generated in the experimental process can not be leaked out, wherein the air suction pump 11 sucks air to be purified in the negative pressure operation chamber 4 into the filter chambers 5 at two sides through an air collection chamber, the outer air exhaust efficient air filter 10 purifies the air to be purified and then exhausts the air to be purified out of the cabinet body 2 through an air vent 7, outside air and/or purified air is sucked into the air transmission chamber 6 through the air transmission fan 13, and clean air is supplied into the negative pressure operation chamber 4 after secondary purification is completed through the inner air exhaust efficient air filter 12; to sum up, the utility model adopts the mode of respectively arranging the air pump and the air transmission fan 13 in the filtering chamber 5 and the air transmission chamber 6, enhances the negative pressure in the filtering chamber 5 and the positive pressure in the air transmission chamber 6, ensures the air collection efficiency and the air transmission efficiency, and avoids the problem that the gas mobility in the negative pressure operation chamber 4 is insufficient and the polluted gas is easy to leak only by arranging a high-efficiency air filter; furthermore, the mode that the filter chambers 5 are symmetrically arranged on two sides of the negative pressure operation chamber 4 is adopted, so that the negative pressure environment in the negative pressure operation chamber 4 is stable, and meanwhile, the gas in the negative pressure operation chamber 4 is drained towards two sides, so that the problem that the gas is easy to leak from the middle when the gas stays in the middle for too long time and a large amount of gas is generated is solved.
In order to avoid the problem that the induced draft of the air pump 11 leads to the air current unstability in the both sides filter chamber 5 simultaneously, the utility model discloses the centre of well front side collection chamber 8 and rear side collection chamber 9 all is provided with intermediate bottom 15 for both sides air pump 11 corresponds the front side collection chamber 8 and the rear side collection chamber 9 of the same volume respectively.
In order to guarantee efficiency of admitting air and place the foreign matter and fall into the gas collecting chamber, the utility model discloses the inlet end department of well front side gas collecting chamber 8 and rear side gas collecting chamber 9 is provided with and is used for blockking the inlet plate 16 that operating means fell into, and the last equipartition of inlet plate 16 has arranged a plurality of inlet ports or a plurality of parallel arrangement's rectangular shape opening.
In order to clean the air collecting chamber, the air inlet plate 16 of the utility model is detachably arranged at the air inlet ends of the front air collecting chamber 8 and the rear air collecting chamber 9.
In order to improve the effective utilization ratio of the air after the high-efficient air cleaner 10 of outer exhaust air filters, the utility model discloses well vent 7 sets up on the top outer wall of the cabinet body 2, and vent 7 and filter chamber 5 give vent to anger the end mutual disposition, offers the gas diffluence pass 17 that is linked together with gas transmission chamber 6 on the lateral wall of the end of giving vent to anger of filter chamber 5.
As shown in fig. 5, the utility model discloses in still including the slowly-releasing wind subassembly 18 that is used for providing continuous slowly-releasing gas, slowly-releasing wind subassembly 18 sets up on cabinet body 2 outer wall, and be located the middle part of front side collection chamber 8, slowly-releasing wind subassembly 18 includes demountable installation casing 19 on cabinet body 2 outer wall and installs the micro-fan 20 in casing 19, be provided with air intake 21 on casing 19's the bottom, be provided with a plurality of slowly-releasing air outlets 22 on casing 19's the top surface, micro-fan 20's air inlet end and air-out end are just respectively to air intake 21 gentle release wind gap 22, be provided with the filter pulp 23 that is used for cutting off casing 19 inner chamber between micro-fan 20's air-out end and the slowly-releasing air outlet. Wherein, micro fan 20, filter pulp 23 are current part, when operating personnel carried out the experiment, start micro fan 20, the slowly-releasing air of upwards releasing, to sum up, adopt on the outer wall of the cabinet body 2 and be located the mode that the middle part position of the front side plenum chamber 8 set up slowly-releasing wind subassembly 18, make operating personnel's the in-person area (be the middle part position of negative pressure control chamber 4) exerted by the slowly-releasing breeze after the current-limiting, provide make-up gas promptly, avoid because operating personnel's health blocks that external wind leads to the problem that the contaminated air flows towards the human body easily in getting into negative pressure control chamber 4, the risk has been reduced.
The utility model discloses the symmetry is provided with the ultraviolet lamp that is used for disinfecting on the inside lateral wall of well negative pressure control chamber 4.
The utility model discloses operation mouth department of well negative pressure control chamber 4 is provided with separation glass 3 that can vertical lift, is provided with the vertical guide way that is used for holding separation glass 3 on the cabinet body 2.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The utility model provides a gaseous high efficiency filter biological safety cabinet which characterized in that: the portable air distribution cabinet comprises movable support legs and a cabinet body arranged on the movable support legs, wherein the cabinet body comprises a negative pressure operation chamber with an opening on one side, an air collection chamber arranged below the negative pressure operation chamber, filter chambers symmetrically arranged on two sides of the negative pressure operation chamber and an air transmission chamber arranged above the negative pressure operation chamber, a vent communicated with the outside is arranged on the outer wall of the cabinet body, the negative pressure operation chamber is respectively communicated with the air transmission chamber and the air collection chamber, the air collection chamber is communicated with the filter chambers, the filter chambers are respectively communicated with the vent and the air transmission chamber, the air collection chamber comprises a front air collection chamber and a rear air collection chamber which are mutually independent and communicated with the filter chambers on two sides and are symmetrically arranged below the negative pressure operation chamber, and an outer air exhaust efficient air filter and an air suction pump positioned below the outer air efficient air filter are arranged in, the air inlet end of the air suction pump is respectively communicated with the front side air collection chamber and the rear side air collection chamber, the air outlet end of the air suction pump is opposite to the air inlet end of the outer air exhaust efficient air filter, the air transmission chamber is communicated with the negative pressure operation chamber through the inner air exhaust efficient air filter, an air transmission fan used for supplying air to the inner air exhaust efficient air filter is arranged in the air transmission chamber, the air transmission fan is connected with a motor installed on the outer wall of the top of the cabinet body, and the air transmission amount of the air transmission chamber to the negative pressure operation chamber is smaller than the air transmission amount of the negative pressure operation chamber to the air collection chamber.
2. The gas high-efficiency filtration biosafety cabinet according to claim 1, wherein: and the middle of the front side gas collection chamber and the middle of the rear side gas collection chamber are both provided with a middle clapboard.
3. The gas high-efficiency filtering biosafety cabinet according to claim 2, characterized in that: and air inlet plates for blocking operating tools from falling are arranged at the air inlet ends of the front air collecting chamber and the rear air collecting chamber, and a plurality of air inlet holes or a plurality of elongated openings which are arranged in parallel are uniformly distributed on the air inlet plates.
4. The gas high-efficiency filtering biosafety cabinet according to claim 3, characterized in that: the air inlet plate is detachably arranged at the air inlet ends of the front side air collection chamber and the rear side air collection chamber.
5. The gas high-efficiency filtering biological safety cabinet according to claim 1 or 4, characterized in that: the ventilation opening is arranged on the outer wall of the top of the cabinet body, the ventilation opening and the air outlet end of the filtering chamber are arranged oppositely, and a gas flow distributing opening communicated with the gas transmission chamber is formed in the side wall of the air outlet end of the filtering chamber.
6. The gas high-efficiency filtering biological safety cabinet according to claim 1 or 4, characterized in that: still including being used for providing the gaseous slowly-releasing wind subassembly of continuous slowly-releasing, slowly-releasing wind subassembly sets up on the external wall of cabinet, and be located the middle part of front side collection chamber, slowly-releasing wind subassembly is including demountable installation casing on the external wall of cabinet and installation micro-fan in the casing, be provided with the air intake on the bottom of casing, be provided with a plurality of slowly-releasing air outlets on the top surface of casing, micro-fan's air inlet end and air-out end are just right respectively the air intake with slowly-releasing air outlet, micro-fan's air-out end with be provided with between the slowly-releasing air outlet and be used for cutting off the filter pulp of casing inner chamber, slowly-releasing air outlet is minor diameter current.
7. The gas high-efficiency filtration biosafety cabinet according to claim 1, wherein: and ultraviolet lamps for sterilization are symmetrically arranged on the inner side wall of the negative pressure operation chamber.
8. The gas high-efficiency filtering biological safety cabinet according to claim 1 or 7, characterized in that: the negative pressure operation room is characterized in that the operation port of the negative pressure operation room is provided with vertically liftable separation glass, and the cabinet body is provided with a vertical guide groove for accommodating the separation glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020667976.5U CN212663587U (en) | 2020-04-28 | 2020-04-28 | Gaseous high efficiency filter biological safety cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020667976.5U CN212663587U (en) | 2020-04-28 | 2020-04-28 | Gaseous high efficiency filter biological safety cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN212663587U true CN212663587U (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020667976.5U Active CN212663587U (en) | 2020-04-28 | 2020-04-28 | Gaseous high efficiency filter biological safety cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212663587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113786679A (en) * | 2021-09-23 | 2021-12-14 | 上海飞域实验室设备有限公司 | Novel cover is weighed to net gas balance of negative pressure |
-
2020
- 2020-04-28 CN CN202020667976.5U patent/CN212663587U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113786679A (en) * | 2021-09-23 | 2021-12-14 | 上海飞域实验室设备有限公司 | Novel cover is weighed to net gas balance of negative pressure |
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