First, the concept of purification

Purification engineering refers to the elimination of particles, harmful air, bacteria and other pollutants in the air within a certain range of air, and the indoor temperature, cleanliness, indoor pressure, airflow speed in airflow distribution, noise and vibration and lighting, static control in a certain range of demand, such a process is called purification engineering.

Purification engineering classification: purification workshop, dust-free room, dust-free workshop, clean room, purification room, asepsis room, hospital operating room, purification decoration project; Engaged in the production of air shower room, transfer window, automatic hand washing dryer, fan filter unit FFU, ultra-clean table, clean shed stainless steel tables and chairs, shelves, etc. Clean technology usually includes: air purification technology, air conditioning technology, purification technology, gas purification technology, etc.

Two, clean room suitable industry

No matter what industry is more and more strict about the quality of products and the cleanliness of the environment, purification engineering will also go deep into all walks of life, which is the development trend.

At present, the purification engineering industry involves the following: microelectronics, daily cosmetics, printing and packaging, optics and optoelectronics, chemistry, biological pharmaceutical, medical equipment, clean operating room, aerospace, coating coating, cultural relics warehouse, electronic industry, etc.

Specific Classification Brief introduction

Three, how to divide the construction grade of clean room?

Iv. GMP cleanliness grade standard

New VERSION OF GMP cleanliness grade A, B, C, D "Drug Production Quality Management Practice (2010 Revision)" (new VERSION of GMP) since March 1, 2011, the following mainly introduces the new version of GMP cleanliness grade of A, B, C, D four levels.

The standards of air suspended particles at all levels in clean areas are as follows:

Five, clean room air suspended particle standards

Six, clean room microbial monitoring dynamic standards

Ps: Comparison between 1998 edition and 2010 EDITION of GMP clean room air suspended particles standard at all levels

Seven, clean room construction and installation materials

1. Polystyrene EPS foam sandwich board

Polystyrene EPS foam sandwich board is made of color steel plate as the surface, closed cell self-extinguishing polystyrene foam as the core material, through the automatic continuous molding machine after the color steel plate pressing with high strength adhesive bonding and become a new type of efficient composite building materials. It is mainly used for roofing and wall of public buildings, industrial clean workshop, electronic, medicine, food clean workshop, combined cold storage, building layer, booth and so on. Scope of application: workshop, office partition wall, external wall maintenance of steel structure room, decorative building materials, mobile room office building, etc.

2 rock wool sandwich color steel plate

Rock wool sandwich color steel plate is made of natural rock, blast furnace iron slag and so on through high temperature melting into wire, and then after curing molding. It has A fire resistance of 600 degrees and A fire resistance rating.

Its core material can not be burned rock wool, such as anti-corrosion, anti-rust engineering, the surface material can be switched to stainless steel plate.

3. Mechanism board sandwich board

The machine board is made by machinery, forming in one time. The middle is filled with rock wool, polyurethane, foam and other materials. The two sides are connected by male and female mouth. It is widely used in non-load-bearing inner wall, roof, ceiling of industrial clean workshop and load-bearing wall panel of single-layer composite house. It is mainly used in purification partition and ceiling of electronic, semiconductor, pharmaceutical, biological, food and other clean workshops.

4. Manual tongue-and-mouth rock wool board

Both sides of handmade rock wool board can use color coated board, galvanized, stainless steel and other purification specific materials. Core material can be made of inorganic material (glass magnesium board, gypsum board), rock wool, aluminum silicate cotton, glass magnesium cotton, pearl cotton, boiling plate. Galvanized sheet cold - drawn frame or steel frame is used around. The product has high strength, impact resistance, shock resistance, shock resistance and easy installation. Widely used in high-tech electronics, medicine, chemical food and other industries of purification room enclosure, ceiling, industrial workshop, purification room, fire prevention workshop, warehouse, cold storage, air conditioner wall panel.

5. Paper honeycomb sandwich board

Paper honeycomb clean sandwich composite board is a new type of high-tech building materials, is the traditional rock wool, EPS, PU and other traditional sandwich composite board replacement products.

Product performance: thickness 0.2mm-1.0mm; Core material thickness 50mm-250mm; Effective height 1000mm, 1200mm.

Scope of application: workshop, office pavilion wall, steel structure room exterior wall enclosure, decorative building materials, mobile room office building, etc.

6 glass magnesium plate color steel plate

Glass magnesium plate color steel plate is made of magnesium oxide, magnesium chloride and water ternary system, by configuration and adding modifier and made of stable performance of magnesium cementite material, with alkaline glass fiber net as reinforcement material, with light material as filling composite new non-combustible decorative material. Made of special production technology, with fire prevention, waterproof, tasteless, non-toxic, not frozen, not rot, not crack, invariable, non-combustible, high strength light weight, convenient construction, long service life and other characteristics, in the country's similar products have compound special performance.

Viii. Related equipment

Air purifiers are widely used in air-conditioned rooms, such as offices, civil homes, hospital wards and other places that need to purify air, such as laboratories and computer rooms. It is beneficial to improve indoor air quality.

Nine, purification engineering commonly used equipment

1. Stainless steel transfer window

Stainless steel transfer window is a kind of auxiliary equipment of clean workshop, mainly used for the transfer of small items between clean area and clean area, clean area and non-clean area, in order to reduce the number of clean room doors, to reduce the pollution of clean room clean area to a minimum.

2. Head fan

FFU is a kind of terminal air supply device with its own power and filter function; The fan draws in the air from the top and filters it through HEPA. After filtration, the clean air is evenly sent out from the air outlet surface. To provide clean air and particulate filtration control for a clean environment, the fan filter unit can be modular connected. To meet the needs of different enterprises and research institutes for different clean environment.

3. Medium filter

Medium effect filter frame has aluminum frame and galvanized frame and other forms, filter materials are non-woven, glass fiber and so on. Filter diameter 1-Sμm, filter efficiency 60%-95% (colorimetric method). Medium effect filter has strong versatility, easy installation, large dust capacity, large air volume and small resistance. Medium effect filter is mainly used in central air conditioning and centralized air supply system. It can be used in the air conditioning series of primary filtration, to ensure the next level of the system filter and the system itself. In places where the requirements for air cleanliness are not strict, the air treated by the medium effect filter re-enters the room. The commonly used efficiency is F5, F6, F7, F8, 55%, 65%, 85%, 95%.