Overview of low pressure continuous delivery pump The low-pressure continuous delivery pump
is a combination of the principle of pneumatic pressure and the technology of jet flow and fluidization, which fully absorbs the theory of modern two-phase flow of pneumatic conveying. After many years of operation and practice, it is aimed at a large number of medium and near-term powder powder conveying processes. It is a special equipment developed for the requirements of continuous transportation. It is used with other pneumatic conveying equipment in ash removal systems, cement, metallurgy, chemical industry, docks and other systems in thermal power plants. Powdered material transportation in construction site and urban commercial concrete mixing building (station) system, collected ash under ash hopper of thermal power plant, and powdered material transportation and transfer process in metallurgy, chemical industry, building materials, wharf and other industries .
Working principle of low pressure continuous delivery pump
The low-pressure continuous conveying pump consists of two parts: a uniform feeder and a feeder. The feeder completes the balanced feeding and has an air lock function, which presses the material from the normal pressure into the low positive pressure system; the feeder uses a uniquely designed nozzle to uniformly mix the material and the conveying gas, and feed the material to In the conveying pipe, the pneumatic pressure difference is used to make the material along the pipeline to the receiving destination. The overall structure is simple, and only the feeder is a rotating part, so the operation is extremely reliable.
1. Simple structure and reliable operation
Continuous pump consists of two parts: uniform feeder and feeder. The feeder completes the balanced feeding and has an air lock function, which presses the material from the normal pressure into the low positive pressure system; the feeder uses a uniquely designed nozzle to uniformly mix the material and the conveying gas, and feed the material to In the conveying pipe, the pneumatic pressure difference is used to make the material along the pipeline to the receiving destination. The overall structure is simple, and only the feeder is a rotating part, so the operation is extremely reliable.
Because the powder is continuously conveyed, the air lock on the continuous conveying pump is uniformly fed, and its concentration is basically constant, which shows that the conveying is more stable, and there is basically no tube blocking phenomenon itself.
Since the equipment has only feeders and supporting parts with only air inlet valves, the body control only needs to be “started” and “stopped”. It does not require manual inspection, only inspection, and operation and maintenance are still simple and reliable.
The low-pressure continuous conveying pump uses low-pressure conveying and rotary feeding, so its range of use is limited. It can only be used normally and safely under the following conditions, and it should achieve the desired effect.
1. Conveying distance ≯ 300m (equivalent distance).
2. Material bulk density: 2.0t / m 3 (powder).
3. There are no more than 4 cascade pumps (that is, a total of 4 ash conveying pipes).
4. The material's high instantaneous temperature is ≯ 250 ℃.
5. For the concrete mixing building (station) powder conveying system, if the air compressor is used as the power source, the conveying distance is ≥ 300m. The relevant parameter configuration in the "Technical Parameters" table needs to be changed accordingly. It will be based on the site conditions and system. Process requirements are determined separately.
The low-pressure continuous pump is selected as the core equipment to form a pneumatic conveying system. First of all, the user should provide: the system's required conveying volume, conveying distance, or physical and chemical parameters of the material, high temperature and normal working temperature; if it is under the boiler dust collector, the dust collector dust should be provided. Basic parameters such as bucket layout and ash distribution. Then our company's technical staff first determine the basic transportation plan, such as the required air volume, how to group, the continuous pump model, the configuration of the intake and transmission pipelines, the configuration of the top of the warehouse dust collector, and finally determined by the user review.