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Ferguson Conveying Machinery (Changzhou) Co., Ltd.
9469 400-810-0069 ext. 9469
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管家婆期期准免费资料精选> Products> Pneumatic Conveying Equipment> Pneumatic Conveying System
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Pneumatic conveying system
Picture of pneumatic conveying system
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Product introduction

Pneumatic conveying, also known as air flow conveying, is a method of conveying powder and granular solid materials in a pipeline using air flow as a carrier medium under certain conditions. The system is mainly composed of sending equipment, transmission pipeline, material-gas separation equipment, gas source and purification equipment, and electrical instruments. The flow state of the material in the pipeline is very complicated. It varies significantly with the speed of the air flow, the amount of material contained in the air flow, and the material properties of the material itself. According to the material transportation status in the pipeline, the entire pneumatic conveying system can be divided into the following two categories:
a. The dilute phase pneumatic conveying air velocity is relatively high, the material is evenly distributed in the vertical pipe, and it is flying in the horizontal conveying, and the porosity is very large. The material is conveyed mainly by the energy held by the higher velocity airflow.
b. The dense-phase pneumatic conveying materials are no longer evenly distributed in the pipeline, but in a dense state, but the pipeline is not blocked by the materials. Therefore, it is still delivered by the energy held by the airflow. Devices designed for this type of flow include high-pressure pressure feeding and fluidized conveying.
The conveying mechanism and application practice of pneumatic conveying show that it has a series of advantages: low carbon, environmental protection, high conveying efficiency, flexible equipment structure, convenient maintenance and management, easy automation and environmental protection. Especially when it is used for internal conveyance in the factory floor, the conveying process can be combined with the production process, which helps to simplify the equipment of the process. To this end, labor productivity can be greatly improved, costs can be reduced, and space can be reduced.
In summary, pneumatic conveying has the following characteristics:
1) The transmission pipeline can be flexibly arranged, so that the process configuration of the factory equipment is reasonable;
2) Realize bulk material transportation, high efficiency, reduce packaging, loading and unloading transportation costs;
3) The system is airtight, with less dust flying and good environmental sanitation conditions;
4) Fewer moving parts, convenient maintenance and easy to realize automation;
5) It can prevent the material from being damp, stained or mixed with other sundries, and can guarantee the quality of the conveyed material;
6) A variety of process operations can be realized during the conveying process, such as mixing, crushing, classifying, drying, cooling,
Measurement, dust removal, etc .;
7) Long distance operation can be carried out from a few points to one point or from a few points to a few points;
8) For materials with unstable chemical properties, inert gas can be used for transportation.
Although to a certain extent, the power consumption may be slightly larger compared to other conveying forms. Due to the high wind speed of the conveying, local pipe wear and small crushing of the conveyed material may occur. However, the above-mentioned shortcomings can be significantly improved by using a suitable conveying method such as a low conveying wind speed and a high mixing ratio conveying method.

1.1 Dilute phase transportation (low-pressure system)
Dilute phase transportation is the use of gas pressure below 1kg / c㎡, using positive pressure (pressure feed type) or negative pressure (suction type) or a combination of positive and negative pressure to push or pull the animal material at a relatively high speed Through the entire conveying line, this conveying method is called a low-pressure high-speed system, which has a high gas-to-material ratio.
There is an acceleration of about 10m / s2 at the beginning of the system and a high speed of about 1300m / min at the end, so the air velocity is high. The pressure at the beginning of the conveying pipeline is generally lower than 1kg / c㎡, while the end is basically close to the atmospheric pressure. The power for dilute phase transportation is generally air or nitrogen, and the power is generally provided by a centrifugal fan or a roots vacuum pump. During the dilute phase, the material is suspended in the pipeline, and the transportation distance can reach hundreds of meters.
The characteristic of dilute phase negative pressure conveying is that the material can be conveyed from one point or multiple points in bulk to a higher point.
The characteristic of dilute phase positive pressure conveying is that material can be conveyed from a low point to multiple points.
Positive pressure and negative pressure can also be combined to meet special requirements, and it is more suitable for multi-point feeding and multi-point discharging conveying methods to meet complex production process requirements.

Negative pressure dilute phase multi-point reclaiming single point unloading

Positive pressure dilute phase single point reclaiming and multiple point unloading

1.2 Dense phase conveying (high pressure system)
Dense phase conveying is also known as sending tank or warehouse pump conveying. This conveying method uses gas pressure higher than 1kg / c㎡ and uses positive pressure to push the material through the conveying pipeline, so it is often called high pressure-low speed system. The system has a high material-to-gas ratio. The initial speed of this system is about 2m / min, and the starting speed is about 20m / s higher at the end (except for the full-load conveying method). The pressure of the conveying pipeline is generally 2-3kg / c㎥. It is almost zero. This system uses an air compressor as the power source, and its remarkable feature is that the conveying speed is low, and the impact on material quality is small.
At present, the use of high-pressure dense phase system has been very extensive, and different conveying methods can be selected for different conveying materials, in order to maximize its use performance and efficiency, and reflect its economy.
There are two ways to send the tank: the positive pressure honey phase of the tank (storage pump), and the combination of the tanks at full load. Each kind of material of the user has certain specificity and pertinence. Our different conveying systems also have different operating performance and use characteristics. According to different requirements, we provide the best operation that meets the user's production process and material requirements. The scheme and integrated system ensure that the user's materials can meet the best transportation requirements and improve production efficiency.

Send tank positive pressure dense phase conveying

Delivery tank combination full load mode


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