文章来源： 作者：罗茨机电 发布时间：2022-08-30 浏览次数：498
Pneumatic conveying is also known as pneumatic conveying system or wind speed transportation equipment. Especially when it is used for internal transportation in the factory, the whole process of transportation and production can be combined, which is conducive to simplifying the whole process of processing technology. Today, I will give you a brief introduction to the key machinery and equipment of the pneumatic conveying system.
The pneumatic conveying equipment uses air brake pneumatic conveying. Its basic concept is to transmit the kinetic energy (negative pressure energy and mechanical energy) of air compression to the raw materials to be transported according to the working pressure transmitter (warehouse pump), so as to get rid of all kinds of friction resistance and transmit the raw materials to the other end. The mechanical automation and automation technology with very good anti pollution effect are very easy to ease labor efficiency and save human capital. During the whole process of transportation, the actual operation of various processing processes such as mixing, crushing, selection, drying and cooling can be carried out at the same time.
Feeders and feeders
The feeder and feeder are the machines and equipment that mix raw materials and gases and feed them into the feed pipe. They are the throat of the feeder. Whether the structure of the feeder is effective or not will immediately endanger the transport capacity, reliability and energy consumption of all the feeders. Therefore, how to properly design the scheme and select the effective feeder according to the different working conditions of the machinery and equipment is the key step to improve the actual effect of feeding.
Feed pipe and elbow
The feed pipe is a pipeline for transporting raw materials and gas compounds, which is generally connected between the feed feeder and the ash discharge valve. The annular cross-section of the feeding pipe can make the cyclone evenly distributed on all cross-sections. At the same time, the friction resistance is lower than that of other pipelines, so the production, manufacturing and installation are relatively convenient.
The transportation pipeline is generally composed of several parts. In order to better reduce the damage of friction resistance, the inside of the transportation pipeline must be smooth and clean without steps. Therefore, the whole process of connection at the junction of each pipeline is very important. In order to facilitate installation, the transmission pipeline can be divided into several pipe sections according to the total number of buildings. The length of each pipe is the same as the height width ratio of the building. During installation, each pipe section shall be fixed at the upper end and the angle iron flange support point shall be on the wooden floor of the top layer. After all the conveying pipes are vertically calibrated, they shall be fixed to the wooden floor.
The connection of the feeding pipeline shall be close without steam leakage, and the inside shall be smooth and smooth, and shall be centered as far as possible to avoid displacement. The damage of the feeding pipeline or the damage of the pipeline to the raw materials is generally considered to be a relatively prominent problem in the air transportation. In fact, the key lies in the horizontal or skew pipeline, as well as the bend and deformation pipeline. Vertical feeding pipe, less damage.
Since the damage is caused by the constant friction or impact between raw materials and walls, the larger the particle size distribution of raw materials, the higher the strength and the faster the speed, the greater the kinetic energy of friction and impact, and the more serious the damage. The damage velocity is positively correlated with the transport cyclone velocity. In addition, the higher the concentration, the more frequent the friction or impact, and the more serious the damage. The way to reduce damage is to effectively design the transmission pipeline, and try to avoid bends, leveling sections and skew sections; Keep the transmission pipeline free from deformation, align the joints, and try to avoid steps and displacement inside the pipeline. When necessary, the metal composite material can be set off at the easy grinding position.
Ash discharge valve and air shutter
Ash discharge valve
The ash discharge valve is a machine for extracting raw materials from the cyclone. Its provisions are:
First, the separation is more efficient. For plastic raw materials, wheat, rice and other fine-grained materials, it is very easy to guarantee, but for powdery raw materials, it is difficult to completely separate them.
2、 The characteristics shall be stable. In other words, when there is a slight change in the transportation standard (such as the change of exhaust air volume or concentration value), there must be a stable separation capacity.
3、 Simple structure and compact volume. The easily damaged position can be disassembled and replaced, and the inspection and maintenance are convenient. In addition, the fully transparent mirror can be arranged in the pipeline to facilitate observation and practical operation.
Fourth, the ash discharge valve for the separated particulate matter shall have the function of common air. In other words, it is possible not only to unload the particulate matter, but also to extract the dust and light residues therein. Depending on the main purpose, the ash discharge valve can be divided into powder raw material ash discharge valve and granular raw material ash discharge valve. The dust remover is generally used for discharging powdery raw materials.
Wind closing device
The closed cooling fan is also known as star discharger, star discharger, air shutter, rotary feeder and rotary valve. Generally, the structure of the closed cooling fan is composed of a motor rotor centrifugal impeller with several leaves, a casing, a hydraulic seal, a reducer and a motor. The import and export trade flange is square or annular The closed cooling fan is generally installed at the lower side of the ash material of the dust removal equipment. In order to ensure that the joint is tight and airless, the upper end should always maintain (store) raw materials with a certain height width ratio.
Star discharger (also known as stiffness wheel feeder, star type lower feeder, fan off, rotary feeder, rotary valve, etc.) It is widely used in chemical plants, pharmaceutical industry, grain, decorative building materials, metallurgical industry, electric power engineering and other fields. As a bin dumping equipment of various dust remover equipment, it takes advantage of the force of raw materials and the mandatory effect of the organization in the work of the vibrating feeder to unload the raw materials in the bin and feed them to the next equipment continuously and evenly. It can also be used as the feeding equipment for various CNC grinding machines, drying equipment, warehouses and other machinery and equipment, and is suitable for dry powder and small particle raw materials.
The pneumatic conveying equipment adds the raw materials to the gas cyclone with a certain rate to generate floating compounds, which are transmitted to the arrival station according to the pipeline, and then the raw materials are extracted from the cyclone. The pneumatic conveying equipment is mainly used to transport powder, particles and a small piece of raw materials with a dry length of 20-30mm, and sometimes it is also transported into articles. For different raw materials, different wind forces shall be selected to ensure that the raw materials move in the pipeline and do not block the pipeline. It is also necessary to transport raw materials as much as possible, which is both economical and effective.
The above is a detailed introduction of the pneumatic conveying equipment manufacturers. I hope it will help you. If you have any questions, please contact us. We will provide you with services with a professional attitude http://www.sdyqtc.com