CN215879172U - Safe type biological safety cabinet switched systems - Google Patents
Safe type biological safety cabinet switched systems Download PDFInfo
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- CN215879172U CN215879172U CN202122260046.5U CN202122260046U CN215879172U CN 215879172 U CN215879172 U CN 215879172U CN 202122260046 U CN202122260046 U CN 202122260046U CN 215879172 U CN215879172 U CN 215879172U
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Abstract
The utility model discloses a safety type biosafety cabinet switching system, and relates to the technical field of laboratory ventilation equipment control. The utility model comprises a laboratory, a biological safety cabinet arranged in the laboratory and a purification type exhaust fan set, wherein a connecting pipe is connected between the biological safety cabinet and the purification type exhaust fan set, the connecting pipe is provided with an exhaust pipe connected with the laboratory, and one side of the biological safety cabinet is provided with a local controller. The utility model can reduce the investment budget of the biological safety cabinet and reduce the condition of indoor pressure fluctuation on one hand, and can discharge poisonous and harmful gas generated indoors to the outside of a laboratory through the connecting pipe after filtering on the other hand, and can measure the pressure of the connecting pipe in real time through the arranged air pipe pressure sensor, thereby monitoring the connecting pipe in real time and ensuring the pressure in the pipeline to be stable.
Description
Technical Field
The utility model belongs to the technical field of control of ventilation equipment in laboratories, and particularly relates to a switching system of a safe biological safety cabinet.
Background
The biological safety cabinet is a box-shaped air purification negative pressure safety device which can prevent aerosol from dissipating when some dangerous or unknown biological particles are contained in the experimental operation and treatment process. The protective screen is widely applied to scientific research, teaching, clinical examination and production in the fields of microbiology, biomedicine, genetic engineering, biological products and the like, and is the most basic safety protective equipment in the primary protective screen in the biological safety of laboratories.
In the prior art, a biological safety cabinet and an indoor environment air outlet are respectively provided with a fan. When the biological safety cabinet works, starting an exhaust fan corresponding to the biological safety cabinet, and closing the exhaust fan corresponding to the environmental exhaust outlet in a linkage manner; when the biological safety cabinet does not work, the exhaust fan corresponding to the biological safety cabinet is closed, and the exhaust fan corresponding to the environment exhaust outlet is opened in a chain mode.
However, the biosafety cabinet in the prior art needs to be provided with two sets of exhaust fans, so that the investment budget is increased, time difference exists in the starting and stopping processes of the exhaust fans, the indoor pressure fluctuates, and when any one of the exhaust fans fails, the system cannot normally operate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a switching system of a safe biological safety cabinet, which solves the technical problems that two sets of exhaust fans are required to be arranged in the biological safety cabinet in the prior art, the investment budget is increased, and the starting and stopping processes of the exhaust fans have time difference.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a safe biological safety cabinet switching system comprises a laboratory, a biological safety cabinet arranged in the laboratory and a purification type exhaust fan set, wherein a connecting pipe is connected between the biological safety cabinet and the purification type exhaust fan set, an exhaust pipe connected with the laboratory is arranged on the connecting pipe, and a local controller is arranged on one side of the biological safety cabinet;
the connecting pipe and the exhaust pipe are both provided with a pressure-independent air valve and a closed electric air valve, the connecting pipe is provided with an air pipe pressure sensor, one side of the air pipe pressure sensor is connected with an exhaust unit control box and an exhaust unit distribution box, and a laboratory is provided with a room pressure monitor matched with the exhaust unit control box.
Optionally, an indoor air outlet is formed in one side of the laboratory, and the indoor air outlet is connected with an air exhaust pipe.
Optionally, a frequency converter, an air switch and an alternating current contactor are arranged in the exhaust unit distribution box, and the exhaust unit distribution box is connected with the exhaust unit control box.
Alternatively, the pressure-independent air valve is mounted on the lower side of the closed electric air valve.
Optionally, one side of the room pressure monitor is connected with a signal line, and the other end of the signal line is connected with the exhaust unit control box.
Optionally, purification type exhaust fan unit, exhaust fan unit block terminal, exhaust fan unit control box, tuber pipe pressure sensor all install in the laboratory.
Optionally, the duct pressure sensor is located between the exhaust duct and the purification type exhaust unit.
The embodiment of the utility model has the following beneficial effects:
according to one embodiment of the utility model, the purification type exhaust fan set is arranged, so that on one hand, the investment budget of the biological safety cabinet can be reduced, and meanwhile, the condition of indoor pressure fluctuation is reduced, on the other hand, toxic and harmful gas generated indoors can be filtered and exhausted to the outside of a laboratory through the connecting pipe, the pressure of the connecting pipe can be measured in real time through the arranged air pipe pressure sensor, so that the connecting pipe is monitored in real time, the pressure in the pipeline is ensured to be stable, the connecting pipe can be closed and the exhaust pipe can be opened through the arranged two airtight type electric air valves when a user does not use the biological safety cabinet, and the pressure of the laboratory exhaust pipe and the biological safety cabinet connecting pipe can be balanced through the arranged two pressure independent type air valves, so that the exhausted air volume is more stable, and the condition of causing the pressure in the laboratory to fluctuate is reduced.
Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a biosafety cabinet switching system according to an embodiment of the utility model.
Wherein the figures include the following reference numerals:
the device comprises a purification type exhaust fan unit 1, an exhaust fan unit control box 2, an air pipe pressure sensor 3, an exhaust fan unit distribution box 4, a closed type electric air valve 5, a pressure-independent type air valve 6, an on-site controller 7, a room pressure monitor 8, a signal line 9, a laboratory 10, a biological safety cabinet 11, a connecting pipe 12, an exhaust pipe 13 and an indoor air outlet 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses.
To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the utility model have been omitted.
Referring to fig. 1, in this embodiment, a switching system for a safety biosafety cabinet is provided, including: the device comprises a laboratory 10, a biological safety cabinet 11 and a purification type exhaust fan set 1 which are arranged in the laboratory 10, wherein a connecting pipe 12 is connected between the biological safety cabinet 11 and the purification type exhaust fan set 1, an exhaust pipe 13 connected with the laboratory 10 is arranged on the connecting pipe 12, and an on-site controller 7 is arranged on one side of the biological safety cabinet 11;
the connecting pipe 12 and the exhaust pipe 13 are both provided with a pressure-independent air valve 6 and a closed electric air valve 5, the connecting pipe 12 is provided with an air pipe pressure sensor 3, one side of the air pipe pressure sensor 3 is connected with an exhaust unit control box 2 and an exhaust unit distribution box 4, and the laboratory 10 is provided with a room pressure monitor 8 matched with the exhaust unit control box 2.
The purification type exhaust fan unit 1 is provided with a physical filter or a chemical filter therein, and is used for filtering toxic and harmful gases generated indoors and then exhausting the filtered gases outdoors.
The application of one aspect of the embodiment is as follows: when the user needs to exhaust, through controlling exhaust unit control box 2, control two pressure irrelevant type blast gates 6 and two airtight electronic blast gates 5 and open and close to make toxic gas take out through connecting pipe 12 or exhaust pipe 13 on the purification type exhaust unit 1, and outside discharging laboratory 10, can accomplish and exhaust. It should be noted that all the electric devices referred to in this application may be powered by a storage battery or an external power source.
Through a purification type exhaust fan group 1 that sets up, on the one hand can reduce the investment budget of biological safety cabinet, reduce the condition of indoor pressure fluctuation simultaneously, on the other hand can pass through connecting pipe 12, arrange the poisonous and harmful gas of indoor production outside laboratory 10 after filtering, through the tuber pipe pressure sensor 3 that sets up, can real-time measurement connecting pipe 12's pressure, thereby monitor connecting pipe 12 in real time, guarantee the pressure stability in the pipeline, through two airtight type electronic blast gate 5 that set up, can be when the user does not use biological safety cabinet 11, close connecting pipe 12, open exhaust pipe 13, through two irrelevant type blast gate 6 of pressure that set up, can balance laboratory exhaust pipe 13 and biological safety cabinet connecting pipe 12's pressure, thereby make the amount of wind of discharge more stable, reduce and cause the condition that laboratory internal pressure appears undulant.
An indoor air outlet 14 is formed at one side of the laboratory 10 in this embodiment, and the indoor air outlet 14 is connected to the air exhaust pipe 13. Through the connecting pipe 12 and the exhaust pipe 13, the air can be exhausted from the laboratory 10 and the biological safety cabinet 11, so that the exhausted air volume is more stable, and the condition that the pressure in the laboratory 10 fluctuates is reduced.
The exhaust fan set block terminal 4 of this embodiment is built-in to be equipped with converter, air switch and ac contactor, and exhaust fan set block terminal 4 is connected with exhaust fan set control box 2. The frequency converter can change the rotating speed of the purification type exhaust fan set 1 according to the pressure in the connecting pipe 12 measured by the air pipe pressure sensor 3, and the pressure in the connecting pipe 12 is kept stable.
The pressure-independent air valve 6 of the present embodiment is installed below the closed type electromotive air valve 5. Set up two irrelevant type blast gates 6 of pressure, install respectively on 11 tops of biological safety cabinet and exhaust pipe 13, play invariable both purposes of volume of airing exhaust, avoid both because the reason of product characteristic separately, cause the amount of wind to mismatch, set up two airtight electronic blast gates 5, install respectively on biological safety cabinet top and exhaust pipe 13, play both purposes of switching. When the biological safety cabinet 11 is not used, the closed type electric air valve 5 arranged at the top of the biological safety cabinet is closed, and the closed type electric air valve on the exhaust pipe 13 is opened; on the contrary, the closed electric air valve 5 arranged on the top of the biological safety cabinet 11 is opened, and the closed electric air valve 5 on the environment exhaust pipe 13 is closed.
A signal line 9 is connected to one side of the room pressure monitor 8 of the present embodiment, and the other end of the signal line 9 is connected to the exhaust unit control box 2. The intelligent monitoring system is installed in a room, pressure fluctuation in the room is monitored in real time, when abnormality occurs, an alarm is given in time, maintenance personnel are reminded to carry out maintenance and inspection, and the signal line 9 is used for transmitting sensing information and control information.
The purification type exhaust fan unit 1, exhaust fan unit block terminal 4, exhaust fan unit control box 2 of this embodiment, tuber pipe pressure sensor 3 all install in the laboratory 10 outside.
The duct pressure sensor 3 of the present embodiment is located between the exhaust duct 13 and the purge type exhaust fan unit 1.
The above embodiments may be combined with each other.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Claims (7)
1. The utility model provides a biological safety cabinet switched systems of safe type which characterized in that includes: the device comprises a laboratory (10), a biological safety cabinet (11) and a purification type exhaust fan set (1) which are arranged in the laboratory (10), wherein a connecting pipe (12) is connected between the biological safety cabinet (11) and the purification type exhaust fan set (1), an exhaust pipe (13) connected with the laboratory (10) is arranged on the connecting pipe (12), and an on-site controller (7) is arranged on one side of the biological safety cabinet (11);
the pressure-independent air valve (6) and the closed electric air valve (5) are arranged on the connecting pipe (12) and the exhaust pipe (13), the air pipe pressure sensor (3) is arranged on the connecting pipe (12), the exhaust unit control box (2) and the exhaust unit distribution box (4) are connected to one side of the air pipe pressure sensor (3), and the room pressure monitor (8) matched with the exhaust unit control box (2) is arranged on the laboratory (10).
2. The switching system of safe biosafety cabinets according to claim 1, wherein an indoor air outlet (14) is formed at one side of the laboratory (10), and the indoor air outlet (14) is connected with the air exhaust pipe (13).
3. The switching system of safe biosafety cabinet according to claim 1, wherein a frequency converter, an air switch and an ac contactor are installed in the exhaust unit distribution box (4), and the exhaust unit distribution box (4) is connected with the exhaust unit control box (2).
4. A safety biosafety cabinet switching system according to claim 1 wherein the pressure independent air valve (6) is mounted on the underside of the enclosed electric air valve (5).
5. A safety biosafety cabinet switching system according to claim 1, wherein a signal line (9) is connected to one side of the room pressure monitor (8), and the other end of the signal line (9) is connected to the exhaust fan unit control box (2).
6. The switching system of safe biosafety cabinet according to claim 1, wherein the purification type exhaust unit (1), the exhaust unit distribution box (4), the exhaust unit control box (2), and the air pipe pressure sensor (3) are installed outside the laboratory (10).
7. The switching system of safe biosafety cabinet according to claim 1, wherein the duct pressure sensor (3) is located between the exhaust duct (13) and the clean type exhaust unit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122260046.5U CN215879172U (en) | 2021-09-17 | 2021-09-17 | Safe type biological safety cabinet switched systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122260046.5U CN215879172U (en) | 2021-09-17 | 2021-09-17 | Safe type biological safety cabinet switched systems |
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| Publication Number | Publication Date |
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| CN215879172U true CN215879172U (en) | 2022-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122260046.5U Active CN215879172U (en) | 2021-09-17 | 2021-09-17 | Safe type biological safety cabinet switched systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116020581A (en) * | 2022-12-28 | 2023-04-28 | 中国人民解放军军事科学院军事医学研究院 | Automatic adjusting component of three-level biological safety cabinet and three-level biological safety cabinet |
-
2021
- 2021-09-17 CN CN202122260046.5U patent/CN215879172U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116020581A (en) * | 2022-12-28 | 2023-04-28 | 中国人民解放军军事科学院军事医学研究院 | Automatic adjusting component of three-level biological safety cabinet and three-level biological safety cabinet |
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