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About laboratory hammer mill

Types of laboratory hammer mills

There are many kinds of laboratory hammer mills that are quite different from the traditional hammer mill design. Most welcome designs include the pin mill, which is popular in the pharmaceutical industry, and the air classifier mill. Another modern design is the ultrafine laboratory hammer mill, which can achieve particle sizes of less than 2-7 microns.

  • Laboratory hammer mill with pin
  • This pin-type mill hammer grinder works by using strain and shearing forces to break down materials into fine powders. It is especially useful for getting rough and coarse material to finer particle sizes. In addition to having pins, some may also feature an impact rotor. This can help produce an even finer end product.

    This type of hammer mill is used primarily in the pharmaceutical industry to grind up medicine. It has the ability to work on materials with a higher moisture content and fatty substances. One feature of the pin hammer mill is its easy cleaning and sterilization. This is very important in labs where there needs to be a controlled environment.

  • Air classifier laboratory hammer mill
  • The air classifier mill is quite popular in the food industry and chemical industries. It works by using a combination of air flow and mechanical forces to grind up material. It is able to separate fine particles from the coarser ones through the use of an air stream.

    It is especially useful for getting very fine powders in even higher yields. Another positive feature is that it helps reduce the amount of residue left in the machine after processing. Many air classifier hammer mills have shock-resistant and anti-explosive features. This makes them safe to grind hazardous materials as well as chemicals.

  • Ultrafine laboratory hammer mill
  • This new design laboratory hammer mill can produce ultra-fine particles of up to 2-7 microns. It is among the most modern hammer mills used today in the food, chemical, and material recycling industries. Despite being a newer design, the ultrafine mill offers a very high production capacity and greater energy efficiency.

    It works using a high-speed blades and hammers concept, which helps reduce material at a greater speed. Many newer models also come with cooling systems that help prevent overheating while grinding material for long periods of time.

Specifications and maintenance of laboratory hammer mills

Specifications

Laboratory hammer mills have a range of specifications that influence their function and adaptability. One of the key aspects is the range of revolutions per minute (RPM). Rotational velocity can vary from 10,000 up to 70,000 or even higher. An effective, rapid milling process requires greater speeds, which generate more force. A dynamic impact on materials depends on higher velocities.

Another important aspect is the arrangement of screens. The laboratory hammer mill screen mesh size determines the final product's granulation. For example, the 1.5 mm screen will produce a finer powder than the 5.0 mm screen. The laboratory hammer mill often has various screens, enabling the operator to achieve the desired particle size distribution.

Power is also an essential specification. It is usually measured in kilowatts (kW) or horsepower (HP). The greater power enables the hammer mill to process harder materials and run at higher speeds. Depending on the model, the laboratory hammer mill power can vary from 1.5 kW to 7.5 kW or from 2 HP to 10 HP.

Laboratory hammer mills come with various feeding and output systems. They can process batch sizes from 0.5 kg to 50 kg in one mill. The crushing capacity is expressed in kilograms per hour (kg/h) and can be from 5 kg/h to 500 kg/h, depending on the model and other specifications.

Maintenance

One important thing to know about the laboratory hammer mill is that regular maintenance will help it work better and longer. It will also reduce repair needs and keep spare parts' costs down. The main goal of hammer grinder mill maintenance is to keep it working effectively and to prevent any unexpected breakdowns.

Before the maintenance procedure, it is essential to know all the vital parts and components of the laboratory hammer mill. Some of these include the grinding chamber, screens, rotor, motor, hammers, bearings, and seal. It is also important to have specific manuals and guidelines from the manufacturer. These may change the best practices for maintenance, repair, and replacement of spare parts.

First of all, the laboratory hammer mill should be inspected regularly. This will help to detect any issues earlier instead of waiting for them to become serious. The spare parts that are often damaged should be prioritized. These may include screens, bearings, hammers, and seals.

Any loose or damaged parts should be checked and taken care of immediately. For example, transferring materials quickly and efficiently may be affected by loose connections. Any clogs in the grinding chamber should also be addressed. This may include the buildup of product residues or foreign objects that may damage the mill.

Repair the damaged parts or replace the most commonly used spare parts, such as screens and hammers. Ensure that the seal between the feeding and discharging parts is tight to avoid any leakage of fine powder.

Cleaning should be a regular practice. Make sure that all residues are removed after a hammer mill further to avoid contamination of new products.

Scenarios

The pharmaceutical industry relies on the laboratory hammer mill to create drugs and tablets. The milling machine crushes large pills and drugs into smaller, easier-to-manage ones. They also help form powder compounds and rough particle sizes.

The food industry prides itself on hygiene when using laboratory hammer mills to process food. A hammer mill can easily and safely create food additives and small pieces of food. It can process animal food and hard foods like nuts and grains into powders or small particles.

Chemical manufacturers use laboratory hammer mills to make chemical compounds. The exact measurements that a hammer mill can produce help manufacturers create chemicals for different purposes in the construction, coating, and paint industries.

Cosmetic companies use laboratory hammer mills to make their products as fine as possible. Face makeup, such as foundation and powder, needs to be finely milled to have a smooth application. Other products like hair powder and shampoo also require the product to be finely processed.

Recycling companies use hammer mills as they help product separation and create smaller items that can be easily stored or reused. The machines also aid the recycling process by milling materials like plastics and textiles. The results are then stored or further processed into new products.

Laboratory hammer mills help make biofuel and biomass by milling raw materials like crop and wood remnants. The small pieces are then stored, and the production of biofuels continues. Some more extensive laboratories and factories use larger-scale mills for a more extensive production.

How to choose a laboratory hammer mill

When purchasing a hammer mill for the laboratory or production scale, a buyer has to consider certain features that meet their requirements. These include the sample material characteristics, desired particle size distribution, milling method, safety features, capacity and scalability, integration and fe, laboratory hammer millguration, and maintenance requirements.

Knowing the sample material characteristics is essential as this will determine the ideal laboratory hammer mill to purchase. Certain hammer mills are designed for dry milling, while others are designed for wet milling. Moreover, some hammer mills will handle the material better than others because they are more fibrous or ductile than others.

The buyer must know the desired particle size they need to achieve for their final product. Several hammer mills have screens that define the size of the final particle, whereas others can achieve various final particle sizes by changing the hammers' speed and the blades' shape.

A buyer should first know if they want their hammer mill to be part of a production line or singular unit before purchasing. The laboratory hammer mill for sale that is part of a production line will have faster milling speeds to achieve a desired final product, which may not be applicable in a laboratory setting. On the other hand, if the hammer mill is being used in a laboratory, it may have to integrate with other equipment, so it has to be considered with what it will integrate.

A laboratory hammer mill will have to be maintained regularly for calibration and cleaning, so it is essential to consider the model that is easy to clean and maintain over time. Also, the spare parts and their accessibility should also be considered for hassle-free maintenance.

With so many factors to be considered, it is essential to know what the power source of the milling machine will be. This is because the capacity and scalability will depend on the power source, be it electric, gas, diesel, steam, or some other means. It is also essential to consider the safety features of the machinery because it is usually run at high speeds and has rotating blades and hammers. The safety guards and overload protection help to protect the operator from injury.

FAQ

Q1: What are the safety features of the laboratory hammer mill?

A1: Laboratory hammer mills have many safety features. They have overloading detectors that prevent motor overloading and mill overheating. The overloading detectors cut the power and stop the feeding system hammer mill power. Some mills have audible alarms and automatic shutdowns. The operators will hear the alarm, and they will check the hammer mill to see what is wrong. The faulty parts will shut down while other parts keep working. Some laboratory hammer mills have emergency stop buttons. The operators will press them in emergencies to stop the mill immediately.

Q2: How versatile are laboratory hammer mills?

A2: Laboratory hammer mills are very versatile. Manufacturers make them for many different industries. The mills crush hard material like minerals and metals. They also crush soft and fibrous materials like food and biomass. The equipment also comes with different hammers, screens, and blades for varying particle size reduction. The laboratory hammer mill also has various milling processes. It can pre-mill, de-agglomerate, and fine-mill materials.

Q3: How do suppliers guarantee the quality of laboratory hammer mills?

A3: Reputable suppliers have quality hammer mills because they follow laboratory standards. They get the equipment from manufacturers that use quality materials to make durable hammer mills. The suppliers also get equipment that has passed many performance tests. The tests ensure the hammer mills work as they should. Finally, the suppliers offer services like tooling and customization to improve the quality of the product.