Feed grinder dust collector

The Feed Grinder Dust Collector is an auxiliary dust removal equipment for feed grinders. Generally, the DMC series pulse bag dust collector is chosen, with the specifications and models selected based on the size of the feed grinder. The price is also determined by the specifications and models, typically ranging from DMC-24 to DMC-200, with prices increasing sequentially. For small models, the price is a few thousand yuan, while for large models, it can reach several ten thousand yuan.

The Pulse Jet Bag Filter is a device that allows dusty gas to pass through fabric filter bags, uses high-pressure air to blast dust off the filter bags through a pulse valve, and collects the dust. The advantages of the bag filter include high purification efficiency, stable performance, simple operation, strong adaptability, and easily usable recycled dust. The reliable operation of the electrical control equipment is crucial for the normal functioning of the dust collector. Based on years of design and field operation of dust collectors, using programmable control for dust collector operation offers features such as compact structure, comprehensive functions, high reliability, simple operation, and easy maintenance.

The pulse-jet dust collector is positioned at the negative pressure side of the fan. The collector features an inverted airflow design with an upper exhaust and lower intake, incorporating separate bag filter chambers. When one chamber is being cleaned, the control mechanism activates the pulse valve, releasing high-pressure gas along with a large volume of air to blow off the dust on the filter bags, causing the dust to fall into the ash hopper. The dust is then removed through the conveying system, while the dust-laden gas flows through the filter media, and the clean gas is exhausted into the atmosphere via the exhaust duct.



Pulse dust collectors remove dust from the filter medium (bag or tube) by blowing compressed air. Depending on the size of the collector, there may be several groups of pulse valves or even dozens to hundreds, controlled by a pulse controller or PLC. Each time, one group of pulse valves is opened to remove the dust from the bags or tubes under its control, while the others continue to operate normally. After a period, the next group of pulse valves opens to clean the next section. The dust collector is composed of parts such as the hopper, upper, middle, and lower chambers, which are partitioned structures. During operation, dusty gas enters the hopper through the inlet duct, with coarse dust particles falling directly to the bottom of the hopper. Fine dust particles, carried by the gas, are deflected upwards into the middle and lower chambers, where they accumulate on the outer surface of the filter bags. The filtered gas then enters the upper chamber to the clean gas collection pipe and exhaust duct, where it is expelled by the exhaust fan into the atmosphere. Bag cleaning is controlled automatically by a programmable controller, which manages the exhaust valve, pulse valve, and ash discharge valve, etc. Dusty gas enters through the inlet, and upon passing through the hopper, some larger dust particles are separated by inertia and gravity and fall directly to the bottom. After passing through the hopper, the dusty gas enters the filter bag filtering area in the middle chamber. The gas passes through the filter bags, and the dust is retained on the outer surface. The purified gas then enters the upper chamber through the filter bag mouth before being exhausted through the outlet.


In today's modern industrial technology development, the application of dust collectors has become increasingly widespread. Dust filter velocities can vary from high to low. There are certain situations where a higher velocity is needed, and others where a lower velocity is more appropriate. These are all factors that must be considered when selecting a dust collector. Today, we will explain the selection of dust collector filter velocities.
The key to designing a bag dust collector lies in two aspects: first, the selection of type and material, including fabric and cleaning methods; second, parameter design, including filtration air velocity, pressure drop, and efficiency calculation. However, in reality, engineers often do not carefully calculate when designing bag dust collectors, but rather make rough estimates based on some experience parameters and start manufacturing the equipment. In most cases, these devices can still meet the standards for smoke and dust treatment. The reason for this is that the dust removal efficiency of the bag dust collector is very high, which allows for a wide margin of error for designers, thus masking their mistakes. Such equipment cannot meet the requirements for long-term stable operation. Therefore, from a technical standpoint, the design of bag dust collectors should also be as detailed and calculated as other dust collector designs, ensuring both compliance with pollution discharge standards and energy saving, as well as long-term stable operation of the equipment.
From a dust particle size perspective, finer dust requires a lower filtration air velocity, while coarser dust calls for a higher filtration air velocity.
In terms of filter media types, plain fabric filters allow for a lower air velocity, not exceeding 0.5 m/min. This is because an increase in air velocity leads to higher resistance, and the dust layer's porosity decreases under pressure, causing air to break through weak spots, resulting in a "penetration" phenomenon. The higher the air velocity, the more severe the penetration. However, for velvet or woolen fabrics, due to their larger dust capacity and better breathability, the air velocity at which penetration occurs is higher, thus allowing for a greater range of air velocity selection.