Negative pressure dilute phase pneumatic conveying system
Pneumatic conveying is a technology integrated system that uses air (or gas) flow as the conveying power to transport dispersed solid materials in pipelines. Mainly including dilute phase medium and low pressure pneumatic conveying systems, dilute phase medium and low pressure vacuum suction pneumatic conveying systems, dilute phase inert gas circulation pneumatic conveying systems, high-pressure feeder pressure conveying pneumatic conveying systems, dense phase high-pressure pneumatic conveying systems, power plant positive pressure conveying fly ash systems, desulfurization engineering systems, power plant negative pressure ash removal systems, mobile pneumatic conveying systems, etc.
Working principle of negative pressure dilute phase pneumatic conveying
Using a Roots vacuum pump (negative pressure fan) installed at the end of the conveying system to extract air from the system, a negative pressure airflow below atmospheric pressure is formed in the conveying pipe. The material enters the pipeline together with the atmosphere from the starting suction nozzle. As the airflow is transported to the end separator, the material particles are separated from the airflow by gravity or centrifugal force. After dust removal, the gas is pumped into the atmosphere through a centrifugal fan or Roots vacuum pump (negative pressure fan).
| Item |
Conveying Mode |
Transfer Volume(t/h) |
Transfer Pressure(kPa) |
Pipe diamter(mm) |
Height(m) |
Distance(m) |
| Parameter |
Negative Pressure Dilute Phase |
0.1-150 |
29.4-196 |
50-300 |
5-35 |
10-150 |
Characteristics and advantages of negative pressure dilute phase pneumatic conveying system
This system is a pneumatic conveying system that uses a Roots vacuum pump as the air source and continuously sucks and delivers materials. The system has the ability to centrally transport materials from several locations to a large area; The characteristics of low conveying pressure, reliable conveying, and simple equipment. Due to the pressure inside the system being lower than atmospheric pressure, the transported material will not escape from the system; Due to the suction nozzle, it can prevent dust from flying at the material collection point, resulting in high production efficiency.
1. The flexible configuration of conveying pipelines makes the production process of the factory more reasonable.
2. The conveying system is completely sealed, with less dust flying, which can meet environmental protection requirements.
3. Few moving parts, convenient maintenance and easy automation.
4. The high efficiency of bulk material transportation reduces packaging and loading and unloading transportation costs.
5. It can avoid moisture, dirt, and other impurities from being transported, ensuring the quality of transportation.
6. Multiple process operations can be achieved simultaneously during the conveying process.
7. Materials concentrated by counting points can be sent to one location or sent from one location to dispersed counting points, and remote operation can be achieved.
8. For materials with unstable chemical substances, inert gas transportation can be used.
Real case of negative pressure dilute phase pneumatic conveying
Company Introduction
Shandong Yinchi Environmental Protection Equipment Co., Ltd. has established a good reputation in the field of pneumatic conveying, solving problems such as pneumatic conveying, powder conveying, fly ash conveying, workshop dust removal, desulfurization and denitrification for many customers. Received high praise and trust from a wide range of customers. And gradually becoming a supplier of pneumatic conveying systems for many customers, providing different types of pneumatic conveying system services for multiple industries such as chemical, power, steel, cement, environmental protection, etc., as part of the Wuhan Hangzhou High Speed Railway and Beijing Kowloon High Speed Railway sections, including the Huanghuang High Speed Railway, which is one of the "China Water 14th Bureau", "China Railway 11th Bureau", and "Eight Verticals and Eight Horizontals"... More projects
Support engineering - High quality pneumatic conveying engineering
The advanced level of construction technology not only depends on construction management and innovation, but also pays more attention to the overall and durability of the project. In order to ensure the quality of the project and maintain environmental protection, a unique set of pneumatic conveying experience has been formed through continuous adjustment and research and development to ensure the quality of the project
Including: 6 quality management mechanisms, 4 technical guarantees, and 6 after-sales support measures
By managing on-site construction, conducting on-site surveys, designing and developing products and equipment, we ensure the quality of materials and construction from various sources
On site investigation mechanism
A professional pneumatic conveying engineer will survey the site environment and usage conditions, including altitude, altitude, atmospheric temperature, relative humidity, atmospheric oxygen content, temperature and humidity, air pressure, wind direction, wind speed, rainfall, earthquake intensity, and altitude, without leaving any slight differences
Joint design mechanism among multiple design engineers
Each project received by Yinchi Environmental Protection is jointly designed and developed by Yinzhu Environmental Protection and pneumatic conveying engineers to ensure the overall stable operation of the system, accurate and error free progress acceptance, and zero rework.
Standardization mechanism for design drawings
A professional and unified mapping system; Standard design requirements; A concise and clear presentation of the design plan, allowing customers to clearly understand the design results.
Pre-construction disclosure mechanism
Before the engineering disclosure, the designer, engineering supervisor, and project manager shall review and approve the engineering plan in advance, ensuring that the maximum consideration is given during the disclosure and meeting the comprehensive rationality of the disclosure.
Main equipment research and development mechanism
Customer cases onsite
Audited Supplier 
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