Flour mill filter bag

Types of flour mill filter bags

The flour mill filer bag is a key component in a flour mill filter, designed to separate fine flour from air. The bags are made from tightly woven fabric that catches even the smallest flour particles while allowing clean, filtered air to escape. Flour mill filter bags come in several types, depending on the material used to manufacture them.

• Woven polypropylene bags

  This synthetic plastic material is commonly used for flour filter bag manufacturing because it is strong, affordable, and long-lasting. Woven filter bags allow minimal flour leakage while withstanding high filtration pressures. They are also mildew and mold-resistant, which is crucial in filter bag applications where moisture can be present. A woven polypropylene flour mill filter bag is straightforward to clean and can be reused many times, making it a cost-effective option for flour mills.

• 100% Cotton Filter Bags

  As a natural fiber, cotton is often woven into a tightly knit fabric that makes excellent filter bags. Such filter bags can hold even the most minor flour particles and are biodegradable. Although they are not as long-lasting as synthetic options, they can break down naturally once used, which is better for the environment. Cotton bags are straightforward to install and remove from filter frameworks. However, they require more frequent replacement than synthetic filter bags because the cotton fabric wears out faster. A 100% cotton filter bag could be a good option if a temporary filtration solution is needed.

• Nylon Flour Mill Filter Bags

  Nylon is a durable synthetic material. When it comes to filteration, nylon filter bags are even more lasting and are resistant to ripping and tearing. Their long lives mean they can stay in use for longer periods, which is a cost-effective option for some flour mill settings.

Specification and maintenance of flour mill filter bags

Specification

• Diameter: The diameter of the filter bags can vary, typically between 5 and 20 cm, depending on the size and design of the flour mill.
• Length: The length of filter bags normally ranges from 30 cm to 100 cm. The longer the bag, the more capacity it has to hold the filter cake.
• Seal type: Flour mill filter bags have different sealing types to ensure a proper fit and prevent leakage. Common sealing types include snap rings, stainless steel collars, and lip seals.
• Filtration efficiency: The filtration efficiency of flour mill filter bags, usually at least 95%. Higher filtration efficiency means the bags can capture finer particles, leading to cleaner air.
• Handling temperature: Flour filter bags' handling temperature indicates the highest and lowest temperatures at which they can be safely handled. Generally, it is between -100 and 150 degrees centigrade.

Maintenance

• Regular cleaning: Clean the filter bag, i.e., the surface of the filter bag, the connector, and the sealing part. A small amount of detergent can be used to wipe it. Be careful not to use scouring pads or hard brushes to avoid damaging the filter bag.
• Check the integrity: Periodically check whether the filter bag is broken. If there is a tear or damage, it needs to be repaired or replaced in time to avoid affecting the filtration effect.
• Remove dust: Use a blower to get rid of the dust on the filter bag. This prevents the accumulated dust from clogging the bag and affecting its filtration efficiency.
• Keep dry: Keep the filter bag dry. Don't let it get wet, as excess moisture can lead to mould growth and damage to the bag.
• Proper storage: When not using the filter bag, store it in a clean, dry place. Avoid direct sunlight and exposure to toxic and harmful substances.
• Pay attention to the operating environment: Try to reduce the contact between the filter bag and the oil, grease, and other chemical substances during use, which can prolong the service life of the filter bag.

Usage Scenarios of Flour Mill Filter Bags

A flour mill dust filter bag serves diverse usage scenarios in the milling and filtration industry, from air filtration to waste recycling. Amongst them is the extraction and milling of minerals. Mining operations use flour mill filter bags to sort valuable minerals while milling rocks. The filter's ability to tolerate high temperatures and resist chemical reactions makes it suitable for the mineral mining sector.

Another typical application of the flour mill filter bag is in the chemical industry. Chemical manufacturers utilize filter bags to separate and sort various chemicals during the production process. The filter bags assist in maintaining product purity by removing unwanted particles and contaminants. Similar to the food processing industry, the chemical industry requires filter bags of the highest quality. As a result, filter bags with food-grade materials won't leach into the chemicals being processed.

Flour mill filter bags also find use in the power generation and energy sector. The filter bags are used in electrostatic precipitator (ESP) units to separate and capture fly ash filter from flue gas. The filter bags assist in reducing air pollution and conforming to environmental norms by capturing dust and particulate matter.

In the recycling industry, filter bags play a pivotal role. They are used to separate fibers from the host material in the waste stream within the recycling plants. The flour mill filter bags contribute to the recovery of valuable materials and reduce landfill waste.

How to choose flour mill filter bags

Flour mill bags are crucial for several reasons, including protecting the product and ensuring the safety and satisfaction of end users, which is important for feeding livestock. Selecting the appropriate filter bag mill may seem straightforward, but it requires careful consideration of several key factors, including the type of flour production.

The first step is to know what kind of mill one's business is running. The type of milling machine being used will influence the choice of filter bag. For example, air classifier mills may require filter bags specifically designed for them, as they work by the separation of particles through the movement of air.

Consider the type of material the filter bag is made from, as it will directly affect the product's quality. Common filter bag materials include polyester, polypropylene, nomex, and P84, each with its own advantages and disadvantages. For example, while polyester filter bags are affordable, they are less heat resistant and may not last as long as bags made from other materials.

Flour mill filter bags come in different sizes and dimensions to suit various milling machines. The buyer will have to determine the size of the machine they are using and choose filter bags that fit their specifications. Custom sizes are available at an extra cost.

The filter bag's design is also essential whenever choosing flour mill filter bags. Some bags have a tubular design for collecting dust and debris, while others have a flat design for filtering air. The choice will depend on the buyer's specific milling needs. Companies looking to present themselves as environmentally conscious brands may want to consider selecting filter mill bags that are biodegradable.

Check how the filter bag is sealed because poorly sealed bags can leak flour, which will be a waste of resources and money. Common sealing techniques include heat sealing, ultrasonic sealing, and welding. Always choose a filter bag that is easy to replace and install, as this will save time and money in the long run.

Flour mill filter bag Q&A

Q1. What is the function of filter bag in flour mill?

A1. Flour mill filter bag performs the function of dust collection. It captures particulate matter like flour and other residue and prevents them from being released in the air.

Q2. How many types of flour filter bags are there?

A2. The filter bags for flour milling are available in two main types: round bags and snap band filter bags. According to the material they are made from, the plastic filter bag is the most common used to filter flour in the milling machines.

Q3. What material is used for flour filter bags?

A3. The material used for flour filter bags is usually synthetic, such as polyester or polypropylene. Synthetic materials are chosen because they are more durable, stronger, and capable of withstanding the high stress and pressure of filtration than natural materials.

Q4. Do flour filter bags require a change?

A4. Yes, the bags need to be replaced after a certain period or when the bag's filtration efficiency drops. The wear and tear of the bag is more because it is filtered up to 200 microns.