The dust removal system consists of components such as suction and exhaust ducts, dust intake ports, modular filter cartridge dust collectors, exhaust fans, and exhaust chimneys..
Principle of Dust Removal System:
The dust removal system in the sandblasting room utilizes an upward air intake and downward exhaust, with a circulation vacuuming process. Clean air enters the sandblasting room from the top of the room, while the dust removal fan draws impure gases from within the room through various suction ports to the dust collector for collection and processing.
Due to the dust suction inlet of the environmentally-friendly pneumatic recovery sandblasting room being all set below the honeycomb sand collection floor, the airflow carries the dust in a continuous upward-to-downward motion, keeping the dust constantly suppressed at the lower part of the sandblasting room.Thus, the dust concentration above 0.5 meters in the sandblasting room is very low, and the working environment is good.
Dust removal fan exhaust ducts can be terminated into the exhaust chimney as required, meeting the standard requirements for达标排放.
Due to structural reasons, traditional shot blasting rooms typically locate the dust extraction ports at the top, resulting in dust flowing upwards or horizontally. Consequently, during shot blasting operations, the dust concentration inside the room remains high, visibility is low, and the working environment is poor.
Modular cartridge dust collector
Modular filter cartridge dust collectors are a key component in the dust removal process of sandblasting rooms, and their operational condition directly impacts both indoor air quality and outdoor emission standards.
The filter core arrangement is logically designed, featuring high-pressure pulse air-pulse reverse blowing for dust cleaning, yielding excellent results. This structure facilitates the even distribution of dusty gas across the various filter element carriers within the dust collector chamber. It also aids in the immediate settling of dust particles ejected during reverse blowing, reducing the likelihood of secondary adsorption.
The dust collector is equipped with a portable dust collection hopper, which features a quick connection structure with the collector. It is sealed well yet easy to open, allowing cleaning staff to easily remove it, pull it to the designated spot for dust treatment, and even when the dust collection system is in operation, the cleaning task can be completed. There's no need for additional containers to transport, thus avoiding secondary dust飞扬 and environmental pollution.
This dust collector meets the national environmental protection standards for emissions.≤120mg/m³, capture particle size < 5um, resistance < 400Pa, good breathability, low resistance, low energy consumption, reliable filtration performance.
The dust collector boasts an aesthetically pleasing, refined, and stable overall design structure. The filter sleeves are assembled using high-speed connection methods, making disassembly and assembly extremely convenient, thereby reducing the physical labor intensity of workers and improving working conditions.
All filter cartridges are made of imported filter material.The performance features are as follows:
Filter Material: Polyester Fiber, Thickness0.75mm
High Heat Resistance:80℃
Air Permeability:220m3/m2/h
Weight:240g/m2
Filter Precision:0.5um-5um
Filter Resistance:≦45Pa
As shown in the figure, the filter cartridge is structurally designed in a folded cylindrical shape, with an outer diameter of325mm in diameter, 220mm inner diameter, and 660mm in height. A standard filter element has a filtration area of 12m², whereas a dust collector bag of the same size only has 0.6m². Therefore, choosing a filter element dust collector can significantly reduce the volume of the dust collector, saving space for equipment installation.
The dust cleaner's cleaning method is a key technology for its efficient operation. This dust cleaner utilizes a pulse reverse-jet cleaning method. Its working principle is as follows: when the pulse control instrument sends a signal, the pulse control valve's exhaust port opens, the gas in the pulse valve's back pressure chamber is released to relieve pressure, and a pressure difference is created on both sides of the diaphragm. Due to the pressure difference, the diaphragm moves, the pulse valve opens, and at this moment, compressed air is ejected through the pulse valve via the nozzle holes (the gas ejected from the nozzle is the primary wind). As the high-speed airflow passes through the Venturi inducer, it induces several times the amount of surrounding air (referred to as secondary wind) into the filter element, creating an instantaneous positive pressure inside the filter element, thereby achieving the cleaning purpose. The frequency and number of automatic pulse reverse-jet cleaningIncluding backblowing time, the sequence is fully controlled by electricity and can be flexibly adjusted according to actual usage requirements.
By increasing the dust collector's filter area, the air velocity can be reduced, thereby lowering the dust emission. The filter bag dust collector has an air velocity of0.5-0.9m/min。
The dust collector consists of a storage ash drum and a handcart, allowing operators to conveniently transport the waste from the ash筒 to the disposal location.
