CN215412315U - Positive and negative compaction laboratory conversion equipment - Google Patents
Positive and negative compaction laboratory conversion equipment Download PDFInfo
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- CN215412315U CN215412315U CN202121635152.0U CN202121635152U CN215412315U CN 215412315 U CN215412315 U CN 215412315U CN 202121635152 U CN202121635152 U CN 202121635152U CN 215412315 U CN215412315 U CN 215412315U
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Abstract
The utility model discloses a positive and negative compaction laboratory conversion device, and relates to the technical field of laboratory ventilation equipment. The utility model comprises a positive and negative pressure laboratory and a control cabinet positioned on the first side of the positive and negative pressure laboratory, wherein the second side of the positive and negative compaction laboratory is connected with an air return pipe, one end of the air return pipe is provided with a purification unit connected with the control cabinet, and the first side of the purification unit is provided with a fresh air pipe. According to the utility model, the pressure difference sensor for detecting the indoor and outdoor pressure difference of the laboratory is arranged on one side of the positive and negative compaction laboratory, so that the measurement result is conveniently fed back to the first regulating valve so as to control the first regulating valve to regulate the air quantity in the air supply pipe, the arrangement of the exhaust fan provides power for filtering indoor dirty air through the exhaust high-efficiency filter box, and the arrangement of the purification unit realizes cold and heat treatment and filtration treatment of the air, thereby reducing impurities in the air.
Description
Technical Field
The utility model belongs to the technical field of laboratory ventilation equipment, and particularly relates to a positive and negative compaction laboratory conversion device.
Background
A positive and negative pressure laboratory conversion device is a device for converting air in a positive and negative pressure laboratory, a ventilator is a machine which increases the air pressure and discharges air by means of input mechanical energy, and the ventilator is a driven fluid machine.
The return air pipe and the exhaust pipe of the existing positive and negative pressure laboratory are shared, so that pipeline cross contamination is easily caused, the requirements of the return air inlet and the exhaust outlet of the positive and negative compaction laboratory on the air filtration grade are inconsistent, filters of different grades need to be selected, the resistance of the return air inlet and the resistance of the exhaust outlet are different, and the system is difficult to reach balance in the positive pressure and negative pressure conversion process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a positive and negative compaction laboratory conversion device, which solves the technical problem that an air return pipe and an exhaust pipe of the existing positive and negative pressure laboratory are shared.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a positive and negative pressure laboratory conversion device comprises a positive and negative pressure laboratory and a control cabinet positioned on the first side of the positive and negative pressure laboratory, wherein the second side of the positive and negative pressure laboratory is connected with a return air pipe, one end of the return air pipe is provided with a purification unit connected with the control cabinet, and the first side of the purification unit is provided with a fresh air pipe;
the second side of the purification unit is provided with a silencer, one side of the silencer is provided with a first regulating valve, one end of the first regulating valve is provided with an air supply pipe communicated with the positive and negative compaction laboratory, one side of the first regulating valve is provided with a differential pressure sensor, the third side of the positive and negative compaction laboratory is connected with an exhaust pipe, and one end of the exhaust pipe is provided with an exhaust fan.
Optionally, the second side of the positive and negative compaction laboratory is provided with an air return opening matched with one end of an air return pipe, a first electric sealing valve is arranged inside the air return pipe, one end of the air return pipe is provided with a check valve, and one end of the check valve is provided with a second regulating valve matched with the purification unit.
Optionally, an air outlet matched with one end of an exhaust pipe is formed in the third side of the positive and negative compaction laboratory, a second electric sealing valve and a filter box located on one side of the second electric sealing valve are arranged in the exhaust pipe, and an umbrella-shaped hood is arranged on one side of the exhaust fan.
Optionally, one end of the fresh air pipe is provided with a third regulating valve, one end of the third regulating valve is provided with a third electric closing valve, and one end of the third electric closing valve is provided with a shutter air port.
Optionally, the second side of the purification unit is provided with a flexible connection pipe connected with the silencer, and one end of the silencer is provided with a generator matched with the first regulating valve.
Optionally, the blast pipe comprises: install the first pipeline in first governing valve one end, the one end of first pipeline is connected with the second pipeline, and the lateral wall of second pipeline is connected with three third pipeline, and positive and negative compaction laboratory's first side is seted up with third pipeline complex supply-air outlet.
The embodiment of the utility model has the following beneficial effects:
according to the embodiment of the utility model, the pressure difference sensor for detecting the pressure difference between the inside and the outside of the laboratory is arranged on one side of the positive and negative compaction laboratory, so that the measurement result is conveniently fed back to the first regulating valve so as to control the first regulating valve to regulate the air quantity in the air supply pipe, the arrangement of the exhaust fan provides power for filtering indoor dirty air through the exhaust high-efficiency filter box, and the arrangement of the purification unit realizes cold and heat treatment and filtration treatment on the air, thereby reducing impurities in the air.
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 view of a positive-negative pressure laboratory conversion apparatus according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
the device comprises a positive-negative pressure laboratory 1, a return air inlet 2, an exhaust outlet 3, a return air pipe 4, an exhaust pipe 5, a first electric closing valve 6, a second electric closing valve 7, a filter box 8, an exhaust fan 9, an umbrella-shaped hood 10, a differential pressure sensor 11, a check valve 12, a second regulating valve 13, a purification unit 14, a control cabinet 15, a first signal line 16, a second signal line 17, a fresh air pipe 18, a third regulating valve 19, a third electric closing valve 20, a louver air inlet 21, a flexible connecting pipe 22, a silencer 23, a generator 24, a first regulating valve 25, an air supply outlet 26, a sterilizing lamp 27 and an air supply pipe 28.
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 the present embodiment, a positive and negative compaction laboratory switching device is provided, including: the device comprises a positive and negative pressure laboratory 1 and a control cabinet 15 positioned on the first side of the positive and negative pressure laboratory 1, wherein the second side of the positive and negative pressure laboratory 1 is connected with a return air pipe 4, one end of the return air pipe 4 is provided with a purification unit 14 connected with the control cabinet 15, and the first side of the purification unit 14 is provided with a fresh air pipe 18;
the second side of the purification unit 14 is provided with a silencer 23, one side of the silencer 23 is provided with a first regulating valve 25, one end of the first regulating valve 25 is provided with an air supply pipe 28 communicated with the positive and negative pressure laboratory 1, one side of the first regulating valve 25 is provided with a differential pressure sensor 11, the third side of the positive and negative pressure laboratory 1 is connected with an exhaust pipe 5, and one end of the exhaust pipe 5 is provided with an exhaust fan 9.
When needs are discharged laboratory toxic gas, at first place positive negative pressure laboratory 1 in the laboratory, start exhaust fan 9, purification unit 14 inhales fresh air in the air blast pipe 28 through fresh air pipe 18, air in the blast pipe 28 is sent into in the positive negative pressure laboratory 1 and is diluted with toxic gas, exhaust fan 9 passes through exhaust pipe 5 to exhaust into umbrella type hood 10 and the air of entering after diluting toxic gas, and then dilute and discharge laboratory toxic gas.
Install the differential pressure sensor 11 that is used for detecting the interior outer differential pressure of laboratory through the one side at positive and negative compaction laboratory 1, convenient and fast give first governing valve 25 with the measuring result feedback, so that control first governing valve 25 adjusts the air quantity in the blast pipe 28, the setting of exhaust fan 9, can provide power through 8 filters of the high efficiency filter case of airing exhaust for indoor dirty air, the setting of cleaning unit 14, realized carrying out cold and hot processing, filtration treatment to the air, and then reduced the impurity in the air.
Referring to fig. 1, a second side of a positive-negative pressure laboratory 1 of the present embodiment is provided with an air return opening 2 matched with one end of an air return pipe 4 for sucking indoor air, an air return opening of the positive-negative pressure laboratory is generally provided with a middle-effect plate filter for conveying indoor air, the air return pipe 4 is internally provided with a first electric sealing valve 6 for blocking airflow, the opening state of the electric sealing valve arranged on the air return pipe 4 is determined by indoor positive-negative pressure properties, and when the laboratory is in a positive pressure state, the electric sealing valve is opened; when the laboratory is in a negative pressure state, the electric sealing valve is in a closed state, the check valve 12 is arranged at one end of the air return pipe 4, when the purification system stops operating, outdoor air is prevented from directly entering a laboratory area through the air return pipe without being processed, the check valve 12 is arranged at one end of the check valve 13, the second adjusting valve 13 is matched with the purification unit 14, and a first signal line 16 is connected between the control cabinet 15 and the purification unit 14.
Referring to fig. 1, in the present embodiment, an air outlet 3 matched with one end of an air exhaust pipe 5 is formed on a third side of a positive-negative pressure laboratory 1, and is used for sucking dirty indoor air, performing final filtration on the air processed by a purification unit to ensure the cleanliness requirement of the indoor, and is used for sucking dirty indoor air, a high efficiency plate filter is generally arranged at the air outlet of the negative pressure laboratory, a second electric closing valve 7 and a filter box 8 located on one side of the second electric closing valve 7 are installed inside the air exhaust pipe 5, an umbrella-type hood 10 is installed on one side of an air exhauster 9, and is used for conveying dirty indoor air and exhausting the filtered exhaust air to the outdoor, a third regulating valve 19 is installed at one end of a fresh air pipe 18, and is used for conveying fresh air to provide two air flows, when the laboratory is in a positive pressure environment, the two-state regulating valve is in a low air flow operation, when a laboratory is in a negative pressure environment, the two-state air quantity regulating valve is in high-grade air quantity operation, one end of the third regulating valve 19 is provided with a third electric closing valve 20 for blocking air flow, the third electric closing valve 20 arranged on the fresh air pipe 18 is in interlocking start and stop with the purification unit 14, the purification unit 14 is opened, the third electric closing valve 20 is opened, the purification unit 14 is closed, the third electric closing valve 20 is closed, one end of the third electric closing valve 20 is provided with a louver air opening 21, and the louver air opening 21 is arranged on an outer wall and used for extracting outdoor clean air and preventing rainwater from permeating into the laboratory.
Referring to fig. 1, the second side of the purification unit 14 of this embodiment is provided with a flexible connection pipe 22 connected to a silencer 23, one end of the silencer 23 is provided with a generator 24 matched with a first adjusting valve 25, the amount of air fed into the room is adjusted according to the indoor and outdoor pressure difference, when the positive and negative pressure laboratory is switched and no one is operating in the laboratory, the air duct type ozone generator 24 is turned on, the silencer 23 is used for eliminating the noise generated by the purification unit and ensuring low noise in the room, and the air supply pipe 28 includes: install the first pipeline in first governing valve 25 one end, be connected with second signal line 17 between first governing valve 25 and the differential pressure sensor 11, the one end of first pipeline is connected with the second pipeline, and the lateral wall of second pipeline is connected with three third pipeline, and positive negative pressure laboratory 1's first side seted up with third pipeline complex supply-air outlet 26 for air after handling the cleaning unit is sent into indoorly.
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 (6)
1. A positive and negative compaction laboratory transition apparatus comprising: the device comprises a positive and negative pressure laboratory (1) and a control cabinet (15) positioned on the first side of the positive and negative pressure laboratory (1), and is characterized in that the second side of the positive and negative pressure laboratory (1) is connected with an air return pipe (4), one end of the air return pipe (4) is provided with a purification unit (14) connected with the control cabinet (15), and the first side of the purification unit (14) is provided with a fresh air pipe (18);
silencer (23) have been installed to purification unit (14) second side, and first governing valve (25) have been installed to silencer (23) one side, and blast pipe (28) that are linked together with positive negative compaction laboratory (1) have been installed to first governing valve (25) one end, and differential pressure sensor (11) have been installed to one side of first governing valve (25), and positive negative compaction laboratory (1) third side is connected with exhaust pipe (5), and exhaust fan (9) have been installed to exhaust pipe (5) one end.
2. The positive-negative compaction laboratory switching device according to claim 1, wherein the second side of the positive-negative compaction laboratory (1) is provided with an air return opening (2) matched with one end of the air return pipe (4), the interior of the air return pipe (4) is provided with a first electric closing valve (6), one end of the air return pipe (4) is provided with a check valve (12), and one end of the check valve (12) is provided with a second regulating valve (13) matched with the purifying unit (14).
3. The positive-negative compaction laboratory conversion device according to claim 1, wherein the third side of the positive-negative compaction laboratory (1) is provided with an exhaust outlet (3) matched with one end of an exhaust pipe (5), the exhaust pipe (5) is internally provided with a second electric sealing valve (7), a filter box (8) is positioned at one side of the second electric sealing valve (7), and one side of an exhaust fan (9) is provided with an umbrella-shaped hood (10).
4. The positive-negative compaction laboratory changeover device according to claim 1, wherein one end of the fresh air pipe (18) is provided with a third regulating valve (19), one end of the third regulating valve (19) is provided with a third electric closing valve (20), and one end of the third electric closing valve (20) is provided with a louver opening (21).
5. A positive-negative pressure laboratory changeover device according to claim 1, characterized in that the second side of the cleaning unit (14) is provided with a flexible connection pipe (22) connected to a silencer (23), one end of the silencer (23) being provided with a generator (24) cooperating with the first regulating valve (25).
6. A positive-negative compaction laboratory changeover device according to claim 1, wherein the blast duct (28) comprises: install the first pipeline in first governing valve (25) one end, the one end of first pipeline is connected with the second pipeline, and the lateral wall of second pipeline is connected with three third pipeline, and positive and negative compaction laboratory (1) first side seted up with third pipeline complex supply-air outlet (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121635152.0U CN215412315U (en) | 2021-07-19 | 2021-07-19 | Positive and negative compaction laboratory conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121635152.0U CN215412315U (en) | 2021-07-19 | 2021-07-19 | Positive and negative compaction laboratory conversion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215412315U true CN215412315U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121635152.0U Active CN215412315U (en) | 2021-07-19 | 2021-07-19 | Positive and negative compaction laboratory conversion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215412315U (en) |
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2021
- 2021-07-19 CN CN202121635152.0U patent/CN215412315U/en active Active
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