CN204543823U - A kind of electricity with off-line ash-clearing and online replacing filter bag function changes bag dust collector - Google Patents

Abstract

The utility model relates to a dust collector, specifically an electric bag dust collector with the functions of off-line dust cleaning and on-line replacement of filter bags. Partition and flue, with electrostatic precipitator inlet box and electrostatic precipitator outlet box on both sides, and electrostatic precipitator ash hopper below, the middle section of the flue is rectangular in shape, both ends are expanded, and the flue is equipped with The lift valve is divided into the air inlet flue and the air outlet flue by the inclined plate, and the air inlet flue communicates with the bag room through the bag room inlet; the flower plate and the partition plate separate the electrostatic precipitator shell into a clean air room and a bag room The bag chamber is equipped with a filter bag and a cylinder, and the side is provided with a bag chamber inlet; the piston rod of the cylinder is connected with the inlet valve of the bag chamber through a connecting rod, and the piston rod of the cylinder can slide horizontally on the bracket; the bracket is fixed on the grid plate. The utility model has been improved on the basis of the electrostatic precipitator, so that the structure is simpler, the cost is lower, and the operation is convenient. It can realize functions such as off-line dust cleaning and on-line replacement of filter bags, and can improve the dust removal efficiency of fine particles.

Description

An electric bag filter with the functions of off-line dust cleaning and on-line replacement of filter bags

【Technical field】

The utility model relates to a dust collector, in particular to an electric bag dust collector with the functions of off-line dust cleaning and on-line replacement of filter bags.

【Background technique】

Electrostatic precipitators are widely used in domestic iron and steel, cement, coal and electricity industries. Although the dust removal efficiency of electric precipitators is high, some industry standards have been promulgated in recent years in China (such as steel sintering, pelletizing industry air pollutant emission standards GB28662- 2012), to reduce the emission standard of local pollutant concentration to 20mg/m ³ , the dust removal efficiency of electrostatic precipitator for fine particles of 0.1-2μm is low, which can no longer meet the current environmental protection requirements, so it is urgently needed to be transformed. Although the traditional electric bag dust collector has achieved certain results in industrial practice, it still has the problem of uneven air distribution, resulting in poor dust removal effect and short service life of the filter bag. In addition, the traditional electric bag dust collector also has problems The filter bag needs to be replaced offline, and the dust can only be cleaned online, which seriously affects the continuity of the production process.

【Content of utility model】

In order to make the concentration of pollutants discharged by the electrostatic precipitator and the traditional electric bag filter meet the requirements of the new national standard and improve the dust removal efficiency of fine particles, the utility model provides an electric filter with the functions of off-line cleaning and on-line replacement of filter bags. Change bag filter.

The technical solution adopted by the utility model to solve the technical problems is: an electric bag dust collector with the functions of off-line dust cleaning and on-line replacement of filter bags, which includes an electric precipitator shell, and a flower plate is arranged inside the electric precipitator shell , clapboard and flue, with electrostatic precipitator inlet box and electrostatic precipitator outlet box on both sides, and electrostatic precipitator ash hopper below, the middle section of the flue is cuboid, both ends are expanded, and the upper part of the flue is set There is a lift valve, which is divided into an air inlet flue and an air outlet flue by a sloping plate. The air inlet flue communicates with the bag room through the inlet of the bag room; the flower plate and the partition plate separate the shell of the electrostatic precipitator into a clean air room and a bag room. There is a filter bag and a cylinder in the bag chamber, and the inlet of the bag chamber is arranged on the side; the piston rod of the cylinder is connected with the inlet valve of the bag chamber through a connecting rod, and the piston rod of the cylinder can slide horizontally on the bracket; the bracket is fixed on the grid plate .

The beneficial effects of the utility model are: the utility model has been improved on the basis of the electrostatic precipitator, making it simpler in structure, lower in cost, and convenient in operation, and can realize functions such as off-line dust cleaning and on-line replacement of filter bags, and can improve Dust removal efficiency for fine particles.

【Description of drawings】

The utility model is further described below in conjunction with the description of the accompanying drawings and the embodiments

Fig. 1 is a structural schematic diagram of the present utility model, Fig. 2 is a schematic cross-sectional structural diagram of A-A of Fig. 1 , and Fig. 3 is a schematic structural schematic diagram of a cross-sectional structure of B-B of Fig. 2 .

Among them, 1-Electric precipitator intake box, 2-Electric precipitator shell, 3-Electric precipitator outlet box, 4-Electric precipitator ash hopper, 5-Lift valve, 6-Cylinder, 7-Inlet flue , 8-flower plate, 9-outlet flue, 10-partition, 11-clean air chamber, 12-slope plate, 13-bag chamber inlet, 14-bag chamber, 15-filter bag, 16-bag chamber inlet valve , 17-connecting rod, 18-support, 19-grid plate.

【Detailed ways】

In the example shown in the accompanying drawings, an electric bag-changing dust collector with the functions of off-line cleaning and on-line replacement of filter bags includes an electrostatic precipitator housing. There is an electric dust collector inlet box and an electrostatic precipitator outlet box on both sides, and an electrostatic precipitator ash hopper below. The middle section of the flue is rectangular in shape, and the two ends are expanded. It is divided into inlet flue and outlet flue by inclined plate, and the inlet flue is connected with the bag room through the bag room entrance; the flower plate and the partition plate separate the shell of the electrostatic precipitator into a clean air room and a bag room, and the bag room is equipped with There are filter bags and cylinders, and there is a bag chamber inlet on the side; the piston rod of the cylinder is connected to the inlet valve of the bag chamber through a connecting rod, and the piston rod of the cylinder can slide horizontally on the bracket; the bracket is fixed on the grid plate.

When the utility model is used, the lift valve is opened to connect the clean air chamber with the gas outlet flue, and the connecting rod is pulled through the cylinder to open the inlet valve of the bag chamber, so that the bag chamber is connected with the air inlet flue, and the valve is connected. The power supply of the utility model starts the fan of the utility model, and the dust-laden air flow enters the intake flue through the air intake box of the electrostatic precipitator, and the large particle diameter particles in the air flow first fall into the electrostatic precipitator below the intake flue through inertial collision In the ash hopper, the airflow then enters the baghouse through the baghouse inlet and impacts the filter bag. The clean airflow entering the filterbag enters the clean air chamber through the flower plate, and finally the clean airflow is discharged through the outlet flue. When the filter bag needs to be replaced online, close the poppet valve on one side of the electrostatic precipitator shell to isolate the clean air chamber from the outlet flue, and at the same time push the connecting rod through the cylinder to close the corresponding bag chamber inlet valve, and the bag chamber is connected to the air intake. The flue is isolated to replace the filter bag, and the other bag rooms are in normal operation. When off-line cleaning is required, close the poppet valve on one side of the electrostatic precipitator shell, and use the pulse jet method to clean the dust.

To make the utility model stop working, cut off the power supply and turn off the fan.

Claims (1)

1. An electric bag-changing dust collector with the functions of off-line dust cleaning and on-line replacement of filter bags, which includes an electric precipitator shell, inside the electric precipitator shell there are flower plates, partitions and flues, and electric filters are installed on both sides The air intake box of the dust collector and the air outlet box of the electrostatic precipitator are equipped with an ash hopper of the electrostatic precipitator below. The middle section of the flue is rectangular in shape, and both ends are expanded. The flue and the outlet flue, the intake flue is connected to the bag room through the bag room entrance; the flower plate and the partition plate separate the electrostatic precipitator shell into a clean air room and a bag room, and the bag room is equipped with a filter bag and a cylinder. There is an entrance to the bag chamber; the piston rod of the cylinder is connected with the inlet valve of the bag chamber through a connecting rod, and the piston rod of the cylinder can slide horizontally on the bracket; the bracket is fixed on the grid plate.