无码久久精品一区二区三区,久久精品一本到东京热,偷拍视频一区二区三区,免费一区二区三区在线,亚洲七久久之综合七久久,在线观看亚洲日韩国产

JZR-PSF sandblasting room is a high-tech product, which has opened up a brand-new idea for users in the selection of sandblasting rooms. Jinjiu Zhuoer is the first professional equipment factory to promote mobile, disassemblable and environmentally friendly combined sandblasting rooms. The JZR-PSF sandblasting room can handle multiple tasks such as environmentally friendly dust-free and pollution-free sandblasting, sand suction and site cleaning, automatic sorting and filtering of abrasive materials, and abrasive material recycling. It integrates sandblasting machines, dust collectors, sand suction machines, automatic feeding machines, sand and dust separators, and automatic circulation and recovery sandblasting machines. With the advantages of multi-functionality, multi-purpose, low power consumption and low-carbon environmental protection, it can meet the requirements of various industries and operations, and is the latest solution for environmentally friendly sandblasting. When designing or planning a sandblasting room, it is essential to take into account all aspects of factors. Only in this way can we design a sandblasting room that not only meets the usage requirements but also complies with relevant regulations. 1. Production program In coating, the production program is usually expressed by the cleaning area, such as m2/ year, m2/ day or m2/ shift. The size of the production program will directly determine the number of nozzles used and the consumption of compressed air. Considering the needs of development and the variability of the actual sandblasting workload, the determination of the production program for design should preferably leave sufficient leeway and be linked to the company's development goals. 2. Workpiece characteristics The characteristics of the workpiece mainly include the length, width, height of the workpiece and the maximum mass of the workpiece. The size of the cleaning room is determined by the size of the workpieces, and based on this, the required ventilation volume of the ventilation and dust removal system is calculated, the specifications and quantities of fans and dust collectors are selected, and the diameters of ventilation ducts are calculated, etc. The quality of the workpiece is the main basis for choosing the workpiece conveying method and the size of the conveying device. 3. The original state of the workpiece surface The original state of the workpiece surface determines the difficulty level of sandblasting cleaning. Surfaces covered with dense oxide scale or severely rusted are more difficult to clean, while those with mild rust are easier to clean and the work efficiency will be much higher. The original state of the workpiece surface and the cleaning grade requirements are one of the main factors affecting the cleaning efficiency. 4. Requirements for cleaning levels The higher the cleaning level requirement is, the lower the cleaning efficiency is bound to be. The cleaning efficiency varies under different conditions. The actual cleaning efficiency is influenced by many other factors, such as the type, particle size and shape of the abrasive, the hardness of the workpiece material, the spray Angle and distance, and the experience of the sandblasting worker. 5. Work shifts per day This is one of the main factors in determining the number of sandblasting machines or nozzles. The number of nozzles, in turn, determines the size of the compressed air capacity and the scale of the project investment. Therefore, some companies or enterprises have chosen to increase the number of working shifts every day in order to cover the cost of purchasing air compressors. When determining the daily work shifts, the equipment configuration and production efficiency of the previous and subsequent processes must not be ignored. The workpieces that have been cleaned must be coated with primer in the shortest possible time. In addition, the environment where the sandblasting is located, national and local environmental protection requirements, the size and number of existing air compressors, the thickness of the workpieces, and the physical and chemical properties of the objects to be cleaned are also factors that should be taken into consideration when planning and designing a sandblasting room. The ventilation system of the sandblasting room cleaning chamber should ensure that there is always air flowing through each opening of the cleaning chamber during operation. Baffles should be installed at both the air inlet and the opening to minimize the flight of abrasive and dust particles to the adjacent working area under the combined effect of the air inlet airflow and the baffles during sandblasting. Dust will not overflow from the air inlet or the opening. The air volume used for ventilation should be sufficient to make the dusty air in the cleaning room disappear quickly after the sandblasting operation is completed. The door of the cleaning room can only be opened after the sandblasting operation stops. The operation of the ventilation system can only be stopped after the dusty air in the room has been eliminated. The air discharged from the sandblasting cleaning device must be purified by the dust removal device before being discharged into the atmosphere. The dust accumulated in the dust removal device should be easy to remove and must not cause pollution to other working areas. The air inlet is generally located at the front end of the top of the cleaning room. It can also be set at the front end of both sides of the cleaning room, on the door, or on both sides of the door. The wind speed in each section of the ventilation system should be correctly selected. If the wind speed in the pipeline is too low, the material will accumulate in the pipeline due to the lack of sufficient energy, causing blockage. The blockage of the horizontal pipeline is very likely caused by the wind speed being too low. Excessively high wind speed inside the pipeline not only increases system resistance and energy consumption but also accelerates the wear of equipment. If the air velocity at the air inlet of the sandblasting room in the ventilation system is too low, it will cause the dust inside the sandblasting room to overflow. If the air velocity at the suction port is too high, abrasive materials will be sucked into the ventilation duct or even the dust collector. This not only increases the unreasonable consumption of abrasive materials but also shortens the service life of the dust collector. Both the air intake and air intake of the sandblasting room should be equipped with baffles to prevent dust from overflowing or abrasive materials from being sucked into the ventilation system. Installing some air volume regulating valves on the ventilation ducts can adjust the air volume as needed, so that the wind speed within the system reaches a reasonable level. The dusty air in the ventilation system all flows within the ventilation ducts. When designing the ventilation ducts, in addition to correctly selecting the air velocity within each duct, some structural designs should also be carefully handled to minimize the resistance within the ventilation ducts as much as possible. When it comes to the air volume of sandblasting rooms, one often comes into contact with some imperial units, such as cfm and fpm. Today, let's specifically talk about these units. Fpm is a unit of wind speed, feet per minute. Its full English name is :feet per minute One foot =0.3048 meters 1 FPM = 0.3048 m/min = 0.00508 m/s Cfm is a unit of flow, cubic feet per minute. Its full English name is :cubic feet per minute 1cfm=28.316846592 L/min=0.028cmm cmm is a commonly used medium flow unit, cubic meters per minute. 1cfm is approximately 1.7m 3 /h