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热门关键字：食品净化车间 医药洁净车间 低温车间 洁净室 无尘洁净室
Cleanroom design of material purification
The material purification of clean room design is mainly for the clean treatment of raw materials, semi-finished products, tools and equipment during their transportation and transmission. The entrance and exit of materials and personnel should be set separately.
After the materials are cleaned in the clean preparation room, how should they continue to be transported? Mainly depends on the requirements of the product production process, which directly affects the location of the clean preparation room selection. Materials should generally go through the airlock room into the clean room (area), the airlock room is often adjacent to the clean room (area) or in the clean area, so its indoor air pressure should be maintained with the clean production area between a reasonable pressure difference. Make clean air flow from the clean production area to the preparation room.
If the workshop production flow is strong or in order to prevent different levels of clean room (area) between each other or cross-contamination or production process requirements to prevent unnecessary cross-contamination, materials in the clean room in accordance with the provisions of the process flow through the transfer window or other devices in order to pass.
In order to adapt to the products, intermediate products in the process of material transfer between different situations, the use of different types of transfer windows. Generally two flat door box-type transfer window, often two doors into a mechanical interlock switch, that is, a door in the closed state, the other door to open; also some simplified for non-interlocking, relying on the use of their own management; in the pharmaceutical production plant using the box set up inside the UV lamp for the transmission of sterilization; in the case of frequent switching or open for a long time, some also in the box body The air curtain with high efficiency filter is set.
Sterilization equipment is often used in aseptic clean rooms to pass materials, most of this equipment is electric or steam heating, one end of the equipment from the sterile area to open the door, input materials after a period of heating sterilization and then open the other end of the door from the sterile room to take out the materials.
In addition, the flow of work, some need to open holes in the clean Zai partition wall, in order to constantly through the wall output products, so the hole that becomes a weak link of indoor purification. The general treatment method is to increase the indoor positive pressure, or set up the air curtain device above the hole when the river; when transporting small items, such as the sterile room of the dispensing vials, you can also ensure that the indoor positive pressure in the case of the conveyor belt are located on both sides of the hole, the hole set up ultraviolet light.
In a word, the design of the zone of material purification should be organically combined with the process flow, the arrangement of purification air conditioning system and the material transfer characteristics. At the same time, the route should be simple and clear; avoid round trip, too many twists and turns and cross; space as open and smooth as possible, and should be considered together with safety entrances and exits and visiting routes.
After Yuwell set up a working group to prevent the epidemic in mid-January, many workshops of the company, such as injection molding, electronics, general assembly and sterilization filling, have never stopped working to ensure the supply of materials during the epidemic.
Refrigeration program should be based on the cooling requirements (cooling consumption, cooling mode, chilled water temperature, etc.), the construction area of the water source (water temperature, water quality, water quantity, etc.) and power supply, heat source preparation party and technical and economic comparison. Both require better economic indicators, but also to consider the local possibilities. The selection of refrigeration devices is the central link in the process of determining the refrigeration program, the main types of refrigeration devices are as follows.
Using hot water or steam passed through the air heater, the process of heating air and other moisture can be realized. Air heaters are usually used for primary and secondary heating of air conditioning systems, which can provide a larger supply of heat and are more economical. The use of electric heaters is to let the current through the resistance wire heat to heat the air. Electric heaters have the advantages of uniform heating, stable heat, high efficiency, compact structure and easy control. Therefore, it is widely used in air conditioning units and small air conditioning systems. In the large air conditioning system and purification air conditioning system with high requirements for constant temperature precision, electric heaters are also often used on the air supply branch to control local heating, which is the so-called third heating or called fine heating. However, the use of electric heaters to consume more electrical energy, so it is not appropriate to use in places with large heating requirements.
Common air-conditioning supply modes can be divided into centralized and local. In addition, the purification system needs coarse efficiency, medium efficiency and high efficiency filters. Combined with the dual requirements of air conditioning and purification, the purification air conditioning system can be divided into centralized purification air conditioning system and decentralized purification air conditioning system.
The purification treatment method that creates the same clean environment in the whole room by centralized purification air conditioning system is called whole room purification. This is one of the earliest developed methods in clean technology and is still used today. This method is suitable for the place where the process equipment is tall, the number is large and the room requires the same cleanliness. However, this method has large investment, complicated operation and management, and long construction period.
The purification workshop has high requirements for the environment, what kind of laying material is used for the floor of the purification workshop? The purification workshop is generally using PVC flooring, some benefits of using PVC flooring. Purification workshop PVC flooring has a variety of colors, and the color can be determined according to the overall situation of the workshop. You can choose the right color according to the needs of each workshop.