Information on second-hand dust collectors

NegotiableUpdate on 10/25

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Information on second-hand dust collectors

Product Details

Inertial dust collectors are divided into two types: collision type and rotary type. The former is to install one or more baffles along the direction of the airflow, and the dust containing gas collides with the baffles to separate the dust particles from the gas. Obviously, the higher the velocity of the gas before hitting the baffle and the lower it is after collision, the less dust it carries and the higher the dust removal efficiency. The latter is to make the dusty gas change direction multiple times and separate the dust during the turning process. The smaller the curvature radius of gas turning. The higher the turning speed, the higher the dust removal efficiency.

The performance of inertial dust collectors varies depending on their structure. When the gas flow rate inside the equipment is below 10m/S, the pressure loss is between 200-1000Pa, and the dust removal efficiency is 50% -70%. In practical applications, inertial dust collectors are generally multi-stage dust collectors used to separate coarser particles of dust. It is particularly suitable for capturing dry dust with a particle size greater than 10 μ m, but not suitable for adhesive dust and fibrous dust. Inertial dust collectors can also be used to separate droplets, and it is recommended to maintain a gas flow rate of 1-2m/s within the equipment.

This type of equipment has a simple structure, low resistance, but low dust removal efficiency. It is suitable for dry particles with large particles (20 μ m or more)

Information on second-hand dust collectors

He gave an example, taking the reducer as an example. Domestic research is still in its infancy, and the accuracy has not yet reached the standard, so it has to be imported from abroad. The data shows that the import cost of a reducer is approximately 3-4 times the foreign price. Before conquering key technologies, Foshan's robot products mostly followed the path of differentiated competition.

The characteristics of a collision type inertial dust collector are: using one or several baffles to block the airflow from moving in a straight line, and when the airflow quickly turns, dust particles are separated from the airflow under the action of inertia; The collision type inertial dust collector has relatively low resistance to airflow, but its dust removal efficiency is also low; Unlike gravity dust collectors, collision type inertial dust collectors require a higher airflow velocity of about 18-20m/s, and the airflow is basically in a turbulent state.

The specific technologies involved include: 1) next-generation biological detection technology, 2) next-generation gene manipulation technology, 3) synthetic biotechnology, 4) neuroscience and brain like artificial intelligence, 5) microbiome technology, 6) nanobiotechnology, 7) bioimaging technology, 8) big data in biology, 9) omics technology, and 10) engineering technology (detailed introduction in the following figure).

The characteristic of a reflux inertial dust collector is to divide the intake flow into small streams of air using baffles. In order to ensure that any airflow has the same smaller turning radius and larger turning angle, various louver baffle structures can be used.

The louver baffle can effectively separate the velocity of the airflow before it sharply turns. But the speed is not suitable, otherwise it will cause secondary flying of the captured particulate dust, so an airflow speed of 12-15m/s is generally selected.

The size of the louver baffle also has a certain impact on the separation efficiency, and the length of the baffle (along the airflow direction) generally selected is

About 20mm; The distance between the baffles is about 3-6mm; the installation angle of the baffles (angle with the plumb line) is about 30 °, which makes the airflow return angle about 150 °.

Theoretical analysis and practice have proven that the dust removal efficiency of the louver reflux inertial dust collector is related to the diameter and density of dust particles, the rotation angle, rotation speed, rotation radius of the airflow, and gas viscosity. For example, after the dusty airflow enters (see figure on the right), particles of dust are continuously separated from the gaps between the louvers. However, as the gas flow decreases, the gas velocity gradually slows down, and the inertia effect decreases, resulting in a gradual decrease in separation efficiency. So, if 10% of the gas flow can be extracted from the bottom, that is, a louvered separator with a discharge airflow, it will help with dust removal efficiency. In addition, the louver baffle can also be made into a curved shape to prevent the captured particles and dust from being washed away by the airflow and flying again. Due to the use of curved louver baffles, the airflow path is curved, hence it can be called a labyrinth inertial separator.

The bell type inertial dust collector has a simple structure, low resistance, does not require an induced draft fan, and can be directly installed on the exhaust pipe or

On the air duct. But the dust removal efficiency of this type of dust collector is relatively low, usually only about 50%.

The bell jar dust collector is mainly designed based on the principle of gravity settling of some dust particles caused by collision and rapid airflow turning. From the figure, it can be seen that when the dusty flue gas enters the settling chamber with a large cross-section through a long smoke pipe, the flow direction rapidly changes due to the obstruction of the conical smoke hood. At the same time, due to the sharp decrease in the expansion velocity of the cross-section, some of the smoke particles settle and separate under the action of gravity. The separated dust particles are discharged from the lower ash outlet of the settling chamber. The purified flue gas is released into the atmosphere through the smoke pipe at the upper part of the settling chamber.

Louver settling type

The louver settling dust collector is suitable for small vertical boilers and can be directly installed on steel plate rolled chimneys for dust removal

The dust removal efficiency of particles can generally reach about 60%. The louvered inertial dust collector consists of a louvered ash barrier and a cyclone dust collector. The louvered ash barrier mainly concentrates dust particles and has two forms: conical and V-shaped. The louvered inertial dust collector also utilizes the sudden change in direction of airflow to separate particulate dust from gas under inertial action. When the dusty gas enters the louvered ash barrier 1, the vast majority of the gas enters the pipeline through the gaps between the ash barrier blades and enters the atmosphere. This part of the gas is separated from the particulate dust and purified due to a sudden change in direction. Due to inertia, particulate dust still moves forward in its original direction. The gas purified by bypassing the ash barrier generally accounts for 90% of the total gas volume, and another 10% of the gas containing concentrated particulate dust enters the coarse particle removal chamber 3, which is removed by inertia. Then it enters the cyclone dust collector to remove fine dust (if the exhaust volume is not large or the dust concentration is not high, the coarse particle removal chamber can be cancelled and the gas can directly enter the cyclone dust collector for dust removal). The 10% of the processed gas can be returned to the ash barrier through fan 2 or directly into the atmosphere. As shown in the figure on the right.

Information on second-hand dust collectors

Last year, the revenue of AI related businesses in Jiangsu was about 47 billion yuan, forming a relatively complete industrial chain covering artificial intelligence platforms, intelligence, intelligent robots and hardware, artificial intelligence, etc. A number of local AI enterprises have emerged in the basic layer, technology layer, and application layer. Vice Governor of Jiangsu Province, Ma Qiulin, stated that Jiangsu has made breakthroughs in a number of key core technologies and demonstrated typical applications, forming artificial intelligence industry clusters with a certain scale in areas such as Nanjing, Suzhou, and Changzhou.

Main business: second-hand chemical equipment, pharmaceutical equipment, starch equipment, flour equipment, drying equipment, agricultural equipment, feed equipment, dairy equipment, beverage equipment, food equipment, oil equipment, alcohol equipment, environmental protection equipment, pellet making machine equipment, laboratory equipment, plastic environmental protection equipment, fermentation equipment, centrifuge, reaction kettle, evaporator, extraction tank. Seed tank, fermentation tank, dryer, filter press, fiberglass tank, stainless steel storage tank, (excluding special equipment) maintenance, recycling, dismantling, (excluding blasting), installation and sales.

The ash barrier of the louvered inertial dust collector should be made of 20mm × 20mm square shaped, wear-resistant steel.
2. Install guide vanes in the middle of the bend of the pipeline in front of the ash barrier to maintain uniform airflow velocity and dust concentration in the cross-section of the pipeline in front of the ash barrier.
3. Cyclones should usually be directly sucked near the vacuum gap.
4. The cyclone cannot collect the captured dust, but should be continuous, and a high-performance ash discharge device should be installed at the source of the original dust.
5. The louvered inertial dust collector can be installed in vertical, horizontal, or inclined pipelines.
6. The higher the airflow velocity and the greater the angle of airflow direction change of the inertial dust collector, the higher the dust removal efficiency when used to purify metal or mineral dust with higher density and particle size. For viscous and fibrous dust, they are not suitable for use due to their tendency to clog.

*In 2017, the hot topic of smartphones was undoubtedly screens. It can be said that we have witnessed the development process of screens with our own eyes. Since the second half of 2016, the mobile phone industry chain and related terminal manufacturers have been around. By the beginning of this year, screens have sprung up like mushrooms after rain. Nowadays, from Apple, the trendsetter of mobile phones, to the white label market of Huaqiang North, a large number of mobile phone manufacturers have launched screen phones. What's even more interesting is that in the mobile phone market.

1. Inertial dust collectors, like gravity dust collectors, can be used separately or as pre dust collectors for multi-stage dust collectors.
2. The blades in inertial dust collectors are prone to wear and tear, and corresponding technical measures should be taken during manufacturing and application to ensure their service life.
3. Reflux inertial dust collector is a commonly used type in practical applications, and is easy to configure and connect with dust collectors. It has good dust removal effect and can also be used as a pre dust collector separately.
There are two configurations for using a louvered inertial dust collector alone: one is to install the dust collector behind the fan, with most of the gas passing through the dust collector housing and a small portion of the gas containing a large amount of dust passing through the cyclone dust collector before entering the fan, implementing a sealed cycle to avoid removing the dust from the cyclone dust collector. Its disadvantage is that dust passing through the fan can easily wear down its impeller; Another way is to install the dust collector in front of the fan, which can cause wear and tear on the fan impeller due to dust, but the dust that has not been removed by the cyclone dust collector is directly removed, resulting in lower dust removal efficiency.
5. Inertial dust collectors have a significant impact on device air leakage, especially when the leakage of the shell, blades, etc. affects the flow of dusty airflow, the dust removal efficiency will significantly decrease.

hzNBrkih