Installation of high-efficiency filters in dust-free workshops
Installation of high-efficiency filters in dust-free workshops
Before installing the high-efficiency filter in the dust-free workshop, the decoration and installation projects should be completed, and the dust-free workshop should be cleaned and scrubbed in an all-round way; After blowing, clean and wipe again. At this time, workers must...
Text label: Design and installation of dust-free pharmaceutical cleanroom, installation of high-efficiency filter
Installation of high efficiency filter in clean pharmaceutical cleanroom
Before installing the high-efficiency filter in the dust-free pharmaceutical cleanroom, the decoration and installation projects should be completed, and the dust-free workshop should be cleaned and scrubbed in an all-round way; After blowing, clean and wipe again. At this time, workers must wear clean work clothes and work shoes to install high-efficiency air filters. After the ground primer is completed, tear off the plastic film blocked on the high-efficiency air outlet, start the air purification system, blow it for 30 minutes, then shut down, and then tear off the protective film on the color steel plate. The first operation for 30 minutes is due to the Most of the dust can be blown out within the first half an hour, and part of it is attached to the indoor wall surface, and part of it enters the return air duct through the return air outlet, and finally enters the combined air-conditioning unit and is filtered by the primary and medium-efficiency filters. The dust-free workshop is circulated like this; if the blowing time is too long at this time, due to the disturbance of the indoor air flow, the dust that has adhered to the wall and the ground will be sucked into the return air duct. Although the return air outlet is equipped with a filter layer, its filtering ability It is limited, and the dust will inevitably pass through the filter layer of the return air and adhere to the return air duct before being captured by the primary and medium-efficiency filters in the air-conditioning unit, which increases the pollution in the return air system. Remove the coating on the color steel plate and remove it together with the attached dust.
When installing the high-efficiency filter, it is best to have a group of 6 people, 2 people are dedicated to unpacking and pasting the sealing strip, and the other 4 people are divided into two groups for installation, division of labor, cooperation, and mutual cooperation. The sticking of the sealing strip is a very important Work, poor cutting, inadvertent pasting and splicing will directly affect the installation quality of the filter; the cutting, splicing and pasting of the sealing strip should be supervised and inspected by a special person, and the installation can only be performed after passing the inspection; the frame of the high-efficiency filter is divided into wooden frame and Metal frame, in the biological clean room, the use of wood frame high-efficiency filters is limited, so most of the metal frame high-efficiency filters are used now. For high-efficiency filters with partitions, galvanized steel frame is stronger than aluminum alloy frame The frame of the high-efficiency filter is not easily deformed during the tightening process; for the metal-frame high-efficiency filter, the width of the sealing strip should be 20-25mm, the sealing strip is made of closed-cell sponge rubber sheet and neoprene rubber sheet, and the thickness of the sealing strip is 6-8mm. The splicing method at the corners should be trapezoidal or tongue-and-groove splicing, and should not be in the form of flat splicing. No matter what method is used for splicing, making a cutting die is a good way to improve the quality of splicing and speed up the installation. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for dust-free workshops and dust-free workshops.
The high-efficiency filter with the sealing strips passed the inspection should be placed flat on a clean and flat floor with the sealing strips facing upwards. If it needs to be stacked, a flat partition plate with a certain strength must be placed in the middle to prevent unevenness Under pressure, the sealing strip is deformed; before installing the high-efficiency filter, the high-efficiency air supply port and the inside of the pressure-reducing box should be wiped again to make it clean and dust-free. Install the high-efficiency filter into the air outlet, and apply glass glue for double insurance. The leakage mainly occurs at the joints of the four corners. The installation work should be stepped on the appropriate heights on both sides of the herringbone ladder, and the high-efficiency filter should be pushed in parallel. Into the air outlet; there are a total of 4 pressing accessories, two of which should be installed diagonally, and should not be tightened at first. After all four pressing parts are installed, adjust the filter with fingers and visual inspection to make the surrounding clearance Evenly, to ensure that the width of the sealing surface is uniform and improve the sealing performance; if the filter and its surroundings do not need to be tested, the high-efficiency filter diffuser that has been scrubbed can be installed. The diffuser plate should face the high-efficiency filter when installing the diffuser plate. The bolts should not be tightened too tightly. Wash with detergent water to remove oil and dust, and finally rinse with tap water, and then wipe off the remaining water with a dry cloth that does not remove fibers.
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