CN212189147U

CN212189147U - Integral full negative pressure laboratory

Info

Publication number: CN212189147U
Application number: CN202020752995.8U
Authority: CN
Inventors: 崔静涛
Original assignee: Sichuan Chuanjing Clean Technology Holding Co ltd
Current assignee: Sichuan Chuanjing Clean Technology Holding Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-12-22
Anticipated expiration: 2030-05-09

Abstract

The utility model discloses an integral full negative pressure laboratory, an air supply valve is arranged at the air inlet of an air supply fan, an air supply high-efficiency filter is arranged at the air outlet of the air supply fan, an air exhaust valve is arranged at the air outlet of an air exhaust fan, and the air exhaust high-efficiency filter is arranged at the air inlet of the air exhaust fan; the wall of the middle lower part of the dressing room and the wall of the working room are respectively provided with an air inlet which is communicated and connected with the air outlet of the air supply high-efficiency filter, the top parts of the dressing room and the working room are respectively provided with an air outlet which is communicated and connected with the air inlet of the air exhaust high-efficiency filter, a pipeline between each air outlet and the air inlet of the air exhaust high-efficiency filter is respectively provided with a branch air exhaust valve, and the air supply fan, the air supply valve, the air exhaust fan, the air exhaust valve and the branch air exhaust valve are respectively and correspondingly connected. The utility model discloses an aspect can realize that the staff arrives each regional full negative pressure effect in the laboratory, and on the other hand can realize the gradient negative pressure effect of dressing room and studio in the laboratory.

Description

Integral full negative pressure laboratory

Technical Field

The utility model relates to a negative pressure laboratory that requires the cleanliness factor higher especially relates to an integral full negative pressure laboratory.

Background

The negative pressure laboratory, i.e. the laboratory with the air pressure in the indoor part or the front space being less than the atmospheric pressure, is favorable for keeping high cleanliness in the laboratory, is commonly used for pharmacy, microbiological research and scientific experiments, and the indoor negative pressure distribution condition is directly related to the cleanliness grade of the laboratory.

For example, the weighing room is a typical negative pressure laboratory, and is a special local purifying device for pharmaceutical, microbiological research, scientific experiment and other places, which provides a vertical one-way airflow, part of the clean air circulates in the working area, and part of the clean air is discharged to the nearby area, so that the working area generates local negative pressure, cross contamination is prevented, and the high-cleanliness environment of the working area is ensured. The central weighing chamber is a special working chamber specially used for sampling, weighing, analyzing and other industries, can control dust and dust in a working area not to be diffused out of the operating area, ensures that an operator does not suck operated objects, and is special purification equipment for controlling dust flying. The operating area of the central weighing chamber is maintained at negative pressure, 10% of the circulating air is discharged, and the air in the central weighing chamber is self-circulated by a three-stage filtering system (a high-efficiency filter removes all dust with more than or equal to 0.3 μm and more than 99.99% of particles). Carry out dust, reagent and weigh, partial shipment in the room is weighed to the center, can control dust, reagent excessive, raise, prevent the harm of dust, reagent to the absorption of human body, can also avoid the cross contamination of dust, reagent, protect external environment and indoor personnel's safety.

However, in the existing negative pressure laboratory such as a weighing room, except that the working area is negative pressure, other areas are positive pressure, and the contamination of harmful substances to products or the contamination to the environment can be caused by the entering and exiting of working personnel and the conveying of articles, so that the overall cleanliness in the laboratory is difficult to meet the high cleanliness requirement; in addition, current negative pressure laboratory generally adopts fixed building structure, can not remove, and its area is great, is unfavorable for the secondary to migrate in order to improve the practicality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an integral full negative pressure laboratory of full negative pressure in the laboratory just in order to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

an integral type full negative pressure laboratory comprises a dressing room and a working room, wherein a working area is arranged in the working room, the integral type full negative pressure laboratory also comprises an air supply fan, an air supply valve, an air supply high-efficiency filter, an air exhaust fan, an air exhaust valve, an air exhaust high-efficiency filter and a controller, the air supply valve is installed at an air inlet of the air supply fan, the air supply high-efficiency filter is installed at an air outlet of the air supply fan, the air exhaust valve is installed at an air outlet of the air exhaust fan, and the air exhaust high-efficiency filter is installed at an air inlet of the air exhaust fan; the wall of the middle lower part of the dressing room and the wall of the working room are respectively provided with an air inlet which is communicated and connected with the air outlet of the air supply high-efficiency filter, the top of the dressing room and the top of the working room are respectively provided with an air outlet which is communicated and connected with the air inlet of the air exhaust high-efficiency filter, a branch air exhaust valve is respectively arranged on a pipeline between each air outlet and the air inlet of the air exhaust high-efficiency filter, and the control input end of the air supply fan, the control input end of the air supply valve, the control input end of the air exhaust fan, the control input end of the air exhaust valve and the control input end of the branch air exhaust valve are respectively and correspondingly connected with the control.

Preferably, in order to achieve a better cleaning effect, the changing room comprises a first changing room and a second changing room, the first changing room and the second changing room share one air inlet or are respectively provided with the air inlets, the first changing room and the second changing room are respectively provided with the air outlets, and the three air outlets are respectively provided with the branch exhaust valves and are connected with the air inlet of the exhaust high-efficiency filter through the same exhaust pipe.

Further, in order to achieve a better sterilization and cleaning effect, the dressing room and the working room are connected with an external VHP device through a VHP air inlet pipe, a VHP air inlet valve is installed on the VHP air inlet pipe, and the control input end of the VHP air inlet valve is correspondingly connected with the control output end of the controller. VHP, i.e., gasified hydrogen peroxide, also called gasified hydrogen peroxide, is commonly used for sterilization.

Further, in order to realize better clean effect and be convenient for transmit the medicine, workspace top in the studio is equipped with negative pressure laminar flow hood, install medicine cabinet and pass-through box in the studio.

The beneficial effects of the utility model reside in that:

the utility model is provided with an air inlet and an air outlet respectively in the dressing room and the working room in the laboratory, and each air outlet is provided with a branch air outlet valve, by respectively controlling the air supply fan, the air supply valve, the air exhaust fan, the air exhaust valve and the branch air exhaust valves, on one hand, the full negative pressure effect of each region where a worker in a laboratory arrives can be realized, the overall cleanliness in the laboratory is improved, on the other hand, the gradient negative pressure effect of a dressing room and a working room in the laboratory can be realized by controlling the air supply flow, the air exhaust flow and the opening amount of each branch air exhaust valve, for example, the negative pressure of a first dressing room is controlled to be-5 Pa, the negative pressure of a second dressing room is controlled to be-10 Pa, and the negative pressure of the working room is controlled to be-15 Pa, thereby further improving the cleanliness in the working chamber and better preventing the diffusion of viruses or harmful substances; in addition, the integral full negative pressure laboratory is integrated in a box body, so that the integral full negative pressure laboratory is convenient to integrally move, and the practicability is improved; VHP is introduced to further sterilize and disinfect the room, so that the cleaning effect is improved; through setting up negative pressure laminar flow cover and pass-through box, further improve the cleanliness factor of workspace to avoid article to cause the pollution in transportation process.

Drawings

Fig. 1 is a schematic structural view of the integrated total negative pressure laboratory, showing a part of the internal structure;

fig. 2 is a schematic top view of the whole negative pressure laboratory, which shows a part of the internal structure, the laboratory door and the transfer window door.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2, the whole negative pressure laboratory of the present invention includes a first dressing room 16, a second dressing room 18, a working room 19, an air supply blower 7, an air supply valve 6, an air supply high efficiency filter 8, an air exhaust blower 2, an air exhaust valve 1, an air exhaust high efficiency filter 3, a VHP air inlet pipe 5, a VHP air inlet valve 4 and a controller (not shown in the figure), a working area is provided in the working room 19, a negative pressure laminar flow hood 22 is provided above the working area, a medicine cabinet (located beside the transmission window 21, not marked in the figure) and the transmission window 21 are further provided in the working room 19, the air supply valve 6 is installed at an air inlet of the air supply blower 7, the air supply high efficiency filter 8 is installed at an air outlet of the air supply blower 7, the air exhaust valve 1 is installed at an air outlet of the air exhaust blower 2, and the air exhaust; the middle and lower walls of the first changing room 16, the second changing room 18 and the working room 19 are respectively provided with an air inlet 11 communicated and connected with the air outlet of the air supply high-efficiency filter 8, wherein the first changing room 16 and the second changing room 18 share one air inlet 11 (the air inlet 11 can also be respectively arranged), the tops of the first changing room 16, the second changing room 18 and the working room 19 are respectively provided with an air outlet 14 communicated and connected with the air inlet of the air exhaust high-efficiency filter 3, a branch air exhaust valve 15 is respectively arranged on the pipeline between each air outlet 14 and the air inlet of the air exhaust high-efficiency filter 3 and close to the corresponding air outlet 14, the three air outlets 14 are connected with the air inlet of the high-efficiency filter 3 through the same air exhaust pipe 17, the insides of the first changing room 16, the second changing room 18 and the working room 19 are also connected with an external VHP device (not shown in the figure) through a VHP air inlet pipe 5, the VHP air inlet pipe 5 is provided with a VHP air inlet valve 4, and the control input end of the air supply fan 7, the control input end of the air supply valve 6, the control input end of the air exhaust fan 2, the control input end of the air exhaust valve 1, the control input ends of the three branch air exhaust valves 15 and the control input end of the VHP air inlet valve 4 are respectively and correspondingly connected with the control output end of the controller.

Fig. 1 also shows a vertical sandwich channel 9 and a transverse air inlet 10 arranged between the air outlet of the air supply high-efficiency filter 8 and each air inlet 11, and fig. 2 also shows a laboratory door 12, a machine room 13 and a transfer window door 20, which are adaptive conventional structures.

As shown in fig. 1 and fig. 2, when the device is applied, the gradient negative pressure effect of the first changing room 16, the second changing room 18 and the working room 19 in the laboratory is realized by controlling the air supply flow, the air exhaust flow and the opening amount of each branch air exhaust valve 15, for example, the negative pressure of the first changing room 16 is controlled to be-5 Pa, the negative pressure of the second changing room 18 is controlled to be-10 Pa, and the negative pressure of the working room 19 is controlled to be-15 Pa, the control mode can be realized automatically by a controller, or can be realized manually by installing a control switch (the signal output end of the control switch is connected with the signal input end of the controller) in each room; the staff firstly enters the first dressing room 16, enters the second dressing room 18 after finishing the first dressing change, enters the working room 19 after finishing the second dressing change, and after the work such as weighing the medicines in the working area, the medicines are conveyed out of the laboratory through the conveying window 21, the whole process is finished under the full negative pressure state, the cleanliness of the working area is obviously improved, and the pollution of the articles in the conveying process is avoided.

In order to further improve the purification effect, the following scheme can be also preferred:

the core components of the air supply high-efficiency filter 8 and the air exhaust high-efficiency filter 3 are HEPA filters, special fireproof materials are adopted as frames, the frames are divided into grid shapes, high-efficiency folding filter materials are filled in the frames, and the filtering efficiency can reach 99.99% -100%. The pre-filtering cover or the pre-filter of the air inlet enables air to enter the HEPA filter after being pre-filtered and purified, and the service life of the HEPA filter can be prolonged. The air filtering system comprising an air supply fan 7, an air supply valve 6, an air supply high-efficiency filter 8, an air exhaust fan 2, an air exhaust valve 1 and an air exhaust high-efficiency filter 3 is a system which ensures the most important performance of the equipment, and the most important function is to continuously enable clean air to enter a working chamber, so that the flow velocity of air flow (horizontal air flow) in a working area is not less than 0.3m/s, ensure that the cleanliness in the working area reaches ten thousand levels, and simultaneously enable the discharged air flow to be purified through the high-efficiency filter, thereby preventing the environment from being polluted; the exhaust flow velocity is not less than 0.5m/s, so that the whole operation area reaches a negative pressure state, and the personal health is ensured.

The transfer cabin 21 is internally provided with an independent fan system and a filter system, and after the transfer of articles is finished, a self-cleaning process can be automatically started (the fan sucks the air in the cabin body into a high-efficiency filter, the transfer cabin 21 is combined by ultraviolet disinfection and ozone disinfection to carry out double protection on the transferred articles, meanwhile, the transfer cabin doors 20 at two sides of the transfer cabin 21 are interlocked and protected and cannot be opened simultaneously, the reduction of the air flow in the cabin to be contacted with the outside is ensured, the stability of the operation air flow in a test area is ensured, and the cleanliness is ensured at the same time, the dangerous particles contained in the air are efficiently adsorbed, and the filtered and adsorbed air is re-discharged into the transfer cabin body through filter paper); on the other hand, the blow-spray sterilization effect is realized in the transfer process, so that the articles entering the clean area are ensured to be clean, and the cross contamination caused by the articles is prevented and reduced. The blowing and showering time can be set according to actual needs, and the optimized blowing and showering sterilization and energy-saving effects are realized. Blowing and spraying: in the transfer cabin 21, the FFU fan filtering unit is arranged at the upper part. After the power is on, the air is filtered by the high-efficiency filter under the action of the pressure of the fan, and the air after passing through the high-efficiency filter reaches 100 grade (the American Federal 209E standard). Then evenly sent out to the working space. Because the FFU fan filter unit continuously works, 100-grade clean air is continuously sent out, so that the working space forms positive pressure (namely the air pressure in the working space is greater than that outside the working area), and meanwhile, unclean air in a working area is discharged. Due to the positive pressure environment, air outside the working area cannot enter the working area, so that the working area reaches 100-level space all the time. Electromagnetic interlocking: the magnetic locks with feedback signals are adopted for interlocking, so that the two side doors cannot be in an open state at the same time. Thereby guarantee the transmission of the smallclothes article between clean district and clean district, non-clean district and the clean district to reduce the number of times of opening a door of toilet, furthest's reduction clean district's pollution satisfies the toilet requirement. Sealing: the rubber sealing strips (silicon rubber) are embedded and installed around the door frame, so that good sealing performance is guaranteed.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.

Claims

1. An integral type full negative pressure laboratory comprises a dressing room and a working room, wherein a working area is arranged in the working room, the integral type full negative pressure laboratory also comprises an air supply fan, an air supply valve, an air supply high-efficiency filter, an air exhaust fan, an air exhaust valve, an air exhaust high-efficiency filter and a controller, the air supply valve is installed at an air inlet of the air supply fan, the air supply high-efficiency filter is installed at an air outlet of the air supply fan, the air exhaust valve is installed at an air outlet of the air exhaust fan, and the air exhaust high-efficiency filter is installed at an air inlet of the air exhaust fan; the method is characterized in that: the wall of the middle lower part of the dressing room and the wall of the working room are respectively provided with an air inlet which is communicated and connected with the air outlet of the air supply high-efficiency filter, the top of the dressing room and the top of the working room are respectively provided with an air outlet which is communicated and connected with the air inlet of the air exhaust high-efficiency filter, a branch air exhaust valve is respectively arranged on a pipeline between each air outlet and the air inlet of the air exhaust high-efficiency filter, and the control input end of the air supply fan, the control input end of the air supply valve, the control input end of the air exhaust fan, the control input end of the air exhaust valve and the control input end of the branch air exhaust valve are respectively and correspondingly connected with the control.

2. The integrated full negative pressure laboratory of claim 1, wherein: the changing room comprises a first changing room and a second changing room, the first changing room and the second changing room share one air inlet or are respectively arranged on the air inlets, the first changing room and the second changing room are respectively provided with the air outlets, and the three air outlets are respectively provided with the branch air exhaust valves and are connected with the air inlets of the air exhaust high-efficiency filters through the same exhaust pipe.

3. The integrated total negative pressure laboratory according to claim 1 or 2, characterized in that: the dressing room and the working room are also connected with external VHP equipment through a VHP air inlet pipe, the VHP air inlet pipe is provided with a VHP air inlet valve, and the control input end of the VHP air inlet valve is correspondingly connected with the control output end of the controller.

4. The integrated total negative pressure laboratory according to claim 1 or 2, characterized in that: the negative pressure laminar flow hood is arranged above a working area in the working chamber, and the medicine cabinet and the delivery window are installed in the working chamber.