What problems should be paid attention to in the dust collector ash discharge device?

Attention should be paid to the following issues in the setting and installation of the dust collector ash discharge device.

1) According to the production conditions, the type of dust collector, the best value of the dust and the convenience of maintenance and management, the dust collected by the bag filter must take proper post-treatment measures; When the process allows, the process flow should be handled.

2) After treatment, the dusty sewage discharged by the wet dust collector should be recycled to reduce water consumption and avoid water pollution.

3) The bag dust collector used under high negative pressure conditions should be set up with two ash discharge valves to work in series, and ensure that there is a certain height of ash column above the discharger to form an ash seal, ensure the air tightness of the dust discharge port of the bag dust collector, and ensure that the two ash discharge valves are not opened at the same time.

4) When there is a large height difference between the dust collector and the dust discharge point, the dust discharge valve should be arranged near the dust discharge point to reduce the dust drop and reduce the secondary dust.

5) The ash conveying device should be able to discharge the dust smoothly and ensure that there is no air leakage, so as not to reduce the dust removal efficiency of the bag filter due to air leakage.

6) Plug valves and hand holes should be set in front of the ash discharge valve of the ash hopper and ash storage bin of the large dust collector. Scraper conveyors and bucket elevators should be equipped with broken chain protection and alarm devices. Dust unloading devices that work on the principle of levers, such as flashing dust unloading valves, flipping dust unloading valves, etc., should be installed vertically, and attention should be paid to timely adjustment.

7) The amount of dust discharged by the ash discharge device should be less than the capacity of the transportation equipment. When the dry dust discharged by the humidification dust collector of stirring or mixing equipment is used, the dust discharge device that can evenly and quantitatively feed should be selected, such as the rotary discharger dust discharge valve, the screw dust discharge valve, etc.

Clause. 1. In the process of use, if the equipment has air leakage and ash leakage along the axial direction, the material cover can be firmly pressed.

Clause. 2. In the process of transportation and installation, the discharger should maintain stability, avoid collision, and even cause shell fracture and deformation.

Clause. 3. Within 6-10 months after the machinery is put into use, the transmission and bearing parts should be supplemented or replaced with grease, and the oil change time should be appropriately shortened if the ambient temperature is high, humid or there is too much dust in the air.

Clause. 4. In the process of operation, to avoid equipment overload operation caused by large material particles and strong adhesion, or equipment jamming or motor short circuit caused by foreign objects in the dust collector, it is recommended that users timely check and install overload protection devices.

Clause. 5. When the output shaft and input shaft of the dust removal discharger and other parts and accessories are not allowed to be hammered directly to prevent damage.

Jiuzheng Tongming: The dust collector ash discharge device should take proper post-treatment measures for the dust collected by the dust collector or the dusty sewage discharged according to the production conditions, the type of dust collector, the value of the dust and the convenient maintenance and management; When the process allows, it should be included in the process ** treatment.

Under the condition of high negative pressure, the dust collector ash discharge device should be set up to work in series with two dischargers, and ensure that the two dischargers do not open the ash discharge at the same time.

When there is a large height difference between the dust collector and the ash discharge point, the discharger should be arranged near the dust discharge point to reduce the dust drop and reduce the secondary dust.

The dust collector ash discharge device should be tight and not leaky.

The dispenser of the ash hopper and ash storage bin of the large dust collector should be provided with a plug valve and a hand hole. Scraper conveyors and bucket elevators should be equipped with broken chain protection and alarm devices.

Botou Tongming dust removal equipment **** Technical Department.

There are three commonly used cleaning methods for dust collectors:

1.Gas cleaning: Gas cleaning is to use high-pressure gas or external atmosphere to blow back the filter bag to remove the dust on the filter bag. Gas cleaning includes pulse jet cleaning, reverse air cleaning and reverse suction cleaning.

2.Manual beating: It is to manually pat each filter bag to remove the dust on the filter bag.

3.Mechanical Rapping Ash Cleaning: It is divided into top rapping ash cleaning and middle vibration cleaning (both for filter bags), which is to use the mechanical rapping device to periodically vibrate each row of filter bags in turn to remove the dust on the filter bag.

Particle layer dust collector: It is an internal filter dust removal device that uses silica sand, gravel, slag, coke and other granular particles as filter material to remove dust particles in dust-containing gas. Mainly rely on sieve filtration, inertial collision, interception and diffusion, etc., so that the dust adheres to the particle filter material and the surface of the dust particles.

The filtration efficiency increases with the thickness of the particle layer and the thickness of the dust layer on it, and the pressure loss also increases.

1.The high-pressure fan blows back to clean the ash.

2.Compressed air pulse cleaning.

The above two belong to the most widely used ash cleaning methods.

(1) The ash discharge device should be able to discharge the dust smoothly.

2) It is necessary to understand the state of the discharged dust (dry powder or slurry), the ash discharge system (intermittent or continuous), the nature of the dust, the amount of dust discharged and the pressure condition at the dust discharge port of the dust collector.

3) Guarantee the dust collector.

The air tightness at the dust discharge port is not to reduce the dust removal efficiency, and the ash column of a certain height is required above the ash discharge device to form an ash seal.

4) The dust discharge volume of the ash discharge device should be less than the conveying capacity of the transportation equipment. When the continuous humidification dust collector discharges dry dust, it is necessary to choose a dust discharge device that can evenly feed the material, such as rotary dust discharge valve, spiral dust discharge valve, etc.

5) The dust discharge device that works on the principle of lever, such as flashing dust discharge valve, flap dust discharge valve, etc., should be installed vertically and adjusted in a timely manner.

Ash discharge devices are roughly classified in three ways.

1) According to whether water is transported or not, it can be divided into: dry conveying device and wet conveying device.

2) According to the power of the conveying device, it can be divided into: mechanical conveying device and pneumatic conveying device.

3) According to the performance of the ash conveying device, it can be divided into: downward transportation, such as ash unloading device; horizontal conveying, such as scraper conveyor, screw conveyor; Upward conveying, such as bucket elevators.