First, the material seal pump introduction:
The material seal pump uses the air jet effect to make the air drive the ash particles to send the ash to the ash warehouse. The material seal pump mainly consists of four parts: nozzle, cylindrical pump body, nozzle adjustment device, bottom vaporization device, and the material seal pump works. The energy of the time comes from two parts: one is the kinetic energy of the fan, and the other is the potential energy of the material column. LFB-1 series material-sealed pump is a new type of low-pressure pneumatic conveying equipment developed by our factory in cooperation with the Building Materials Institute based on the introduction of foreign advanced technology and the various problems existing in different types of pneumatic conveying equipment in China. The conveyance of all kinds of powdery materials for grey cement uniform and inverted storage is highly efficient and low consumption. It is completely closed and pollution-free. There is almost no maintenance. Roots blower compressed air can be selected.
Second: the advantages of material seal pump
1. Equipment investment is small. One material-sealed pump can replace two warehouse pumps, reducing equipment investment.
2. The gas pressure of the material seal pump is 0.04Mpa-0.1Mpa, which reduces the gas supply pressure, saves air consumption, and reduces the motor power.
3. Reduced maintenance costs. After the system is installed, commissioned and put into operation once, it basically needs no operation, and there is almost no maintenance. The maintenance workers only need to check regularly.
4. Low pressure conveying, the equipment has good sealing performance, reliable operation, no pipe blocking phenomenon, and perfect environment
Since the equipment was put on the market, it has been proved by many uses that the pump has a smaller volume and lower air pressure (0.2--1 atm.). It can be equipped with a fan), easy to arrange, no dust, and meet the requirements of environmental protection. It is widely used in electric power, building materials, chemical industry and other fields. It is an ideal equipment for lifting and conveying powdery materials such as cement, raw materials and fly ash within an equivalent distance of 680m and a height of 50m. The main feature of this sealed pump is its long service life. Reliable operation, almost no maintenance and wear parts.
Three: working principle
The material seal pump uses the air jet effect to make the air drive the ash particles to send the ash to the ash warehouse. The material seal pump mainly consists of four parts: nozzle, cylindrical pump body, nozzle adjustment device, bottom vaporization device, and the material seal pump works. The energy of the time comes from two parts: one is the kinetic energy of the fan, and the other is the potential energy of the material column. The material column is high, the potential energy is large, the pressure is large, and the conveying capacity is correspondingly large, otherwise it is small.
The material seal pump maintains a certain material level during normal operation. When the amount of material under electrical dust collection increases in a short time and the material seal pump is still working normally, the material level height naturally rises. As the material level increases, the material pressure increases. The increase of large potential energy will increase the corresponding amount until the system automatically balances. When the amount of material under electric dust collection is reduced in a short time and the material sealing pump is still working normally, the material level height will naturally decrease. As the material level height decreases, the material reduction potential energy decreases. The corresponding delivery volume is small until the system automatically balances.
Four: Operating conditions
1: The necessary condition for the normal operation of the material seal pump is that there must be a certain material seal height. The pressure of the silo material level must be greater than the positive pressure when the material seal pump is working. The positive and negative pressures are separated by the material level pressure. Press to send the material away, so a certain level of material height is necessary.
2: The dust collector must be installed on the receiving warehouse. The exhaust air volume of the dust collector must be greater than the inlet air volume of the ash conveying fan. Otherwise, when the inlet air volume is greater than the exhaust air volume, the pressure in the receiving warehouse is forced to increase, resulting in system pressure Equilibrium, the pipeline resistance is large, and the inlet air blows back from the material sealing pump to the part above the silo, so that the material sealing pump cannot work normally.
Five: Selection principles and applicable conditions
1. Selection principle
The low-pressure pneumatic conveying equipment material sealed pump is selected as the core equipment to form the pneumatic conveying system. First, the user should provide: the system's required delivery 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, it should be Provide basic parameters such as dust hopper layout and ash distribution. Then the technical personnel of our factory first determine the basic transportation plan, such as the required gas volume, how to group, the continuous pump model, the configuration of the inlet and conveying pipes, and the configuration of the deduster at the top of the warehouse.
2. Applicable conditions
The low-pressure pneumatic conveying equipment material-sealed pump, due to the use of low-pressure conveyance, has a limited range of use. It can only be used normally and safely under the following conditions and achieve the expected effect.
Conveying distance ≯500m (equivalent distance).
Material bulk density: 2.0t / m3 (powder).
There are no more than 4 large pumps (that is, a total of 4 ash conveying pipes).
The material's high instantaneous temperature is ℃ 250 ℃.
Six: specifications and technical performance
Wind pressure required
m3 / h
m3 / min
LFB-1 / 75
LFB-1 / 100
LFB-1 / 150
LFB-1 / 200
LFB-1 / 250
LFB-1 / 300
LFB-1 / 400
Structure of material-sealed pump
主要由料封仓、进料调节风管、流化气箱、执行机构、喷头、喷嘴等组成。 The material sealing pump is mainly composed of a material sealing warehouse, a feed regulating air pipe, a fluidized gas box, an actuator, a nozzle, and a nozzle.
Material sealing pump is a realistic way of development mode, and it is an inevitable choice for achieving a win-win situation for economic development and resource environmental protection. Under the guidance of the concept of sustainable development, the material seal pump is a positive pressure conveying system in the pneumatic conveying industry commonly used in industry to reduce as much as possible through technological innovation, institutional innovation, and industrial transformation. Its conveying process is performed in a fully closed state. , So there is almost no pollution to the environment. Consumption of high-carbon energy such as coal and petroleum, reducing greenhouse gas emissions, achieving a win-win situation of economic and social development and ecological environmental protection is an economic development form.
We have only combined the actual situation to make the material seal pump play a great role, the material seal pump has played a great role in protecting the environment, and recently made a new breakthrough.
This information is provided by Jinboda's environmentally friendly material sealed pump website. The company's leading product, material sealed pump, is a new type of pneumatic conveying equipment developed based on the introduction of foreign technology to address the problems of different types of pneumatic conveying equipment in China. Website: www.tzjx69597677.ne t Sealed pump network.