The construction of rotary dryers incorporates a vessel (drum) that rotates and tumbles materials inside while the air flows through causing evaporation of the moisture. Additionally, vessels include lifters attached to the shell of the vessel. These lifters constantly shuffle and tumble the material making it possible for better drying.
Depending on the properties of your own product, you can set the length of drying (retention of time) and optimal temperature. This will allow you to obtain the material to required condition. The majority of standard models are designed for multiple varieties of drying processes. However, we also manufacture rotary evaporator which will match your purposes even better than standard equipment. There is a plethora of factors that we consider when building a custom rotary dryer.
Construction of Rotary Dryers.
Shell – The efficiency and longevity in the rotary dryer greatly depends on the material of the shell. It may be manufactured from a rich variety of alloys with the most typical choices being stainless, Inconel, and carbon steel. Depending on the requirements of your production process, the size and shape of the shell can be altered. Shell thickness also can be adjusted according to desired amounts of heat retention. Additionally, shell may have an alternative of sealing which allows to contain heat better. Be aware that the shell is probably the most essential areas of the development and deficient expertise of the shell will negatively affect both efficiency and longevity of your equipment.
Combustion chamber – This area of the construction is mainly responsible for generating hot gases through combustion of fuel. Chamber also sets the direction of ventilation which may be co-current or counter current. Depending on the requirements of your production cycle, co-current or counter current dryers might be better. Chambers prevent materials from contacting with flame. There is plenty of options and modifications that may be put on the combustion chamber. Another significant feature is that combustion chambers may be used in conjunction with a wide variety of burners. A combustion chamber defines the efficiency of both energy consumption as well as heat transferring. Because of this a subnormal part will reduce the efficiency of your own equipment.
Burner – Burner generates heat by, as the name suggests, burning fuel. The caliber of the burner will impact the efficiency of fuel usage. You are able to modify a burner to work alongside a variety of fuels like propane, natural gas, solid fuels, etc. Burner needs to be chosen depending on the requirements of your production process.
Material Feed – The part of the construction where material enters the vessel. It is almost always called feed chute. This part of the construction should be made of robust materials in order to prevent wearing. Simultaneously, accretion risks should also be considered.
Air Seal – The environment seal prevents material from falling right out of the vessel through the breech between the drum and combustion chamber. You need to select the best kind of the seal based on the form of the material that you work with.
Drive Assembly – In order to work, rotary dryers need engines. Drive assembly is a mechanism that mixes various areas of the ability block. The setup may be different depending on your unique requirements. Amongst options: pin and gear, chain drives, friction, and direct drive. Different setups serve different purposes. For instance, chain/sprocket system is ideal for small application where 75 horsepower is more than sufficient. On the contrary, gear/pinion method is more desirable for heavy-duty purposes in which you require more power. To be able to control power output, your drive assembly could be designed with a reducer. Small drums can be also powered with a friction drive system that actually works over a shaft mounter engine and reducer. The direct choice is usually selected for bigger applications, but rarely for people who require more than 70 horsepower. Direct option, because the name suggests, is one of the most efficient setups with both an engine and reducer connected right to the shaft.
Riding Ring – This can be a very important part for that shell. A small pressure-consuming add-on drastically reduces mechanical wear in the equipment.
Thrust Rollers – Supportive mechanisms for your riding ring that allow you to move it or fixate its position.
Trunnion Wheels – This portion of the construction takes off of the shell plenty of pressure. Trunnion wheels ensure that the rotating motion is smooth and this the drum never skews its rotation axis. This part is normally build cheap as it is hard to prevent mechanical wear. Trunnion wheels are easy to replace.
Lifters/Flights – Depending on the form of the content which you will continue to work with, lifters may or may not be necessary. However, flights are usually used to raise the efficiency in the industrial drying process. Flights pick-up the material and drop it down so the heat goes right through the curtain formed by the falling material. Lifters could be tjihbx depending on the kind of the material.
Discharger – The rotary evaporator will be the part of the construction that may serve as the outlet in the dryer. This part is usually connected to the cooler that lowers the temperature in the material for additional processing.
Discharge Breech – In order for the item and off-gases to depart the drum and move ahead, they must browse through the discharge breech. This area of the construction allows worked gases to be released and the product to go out of the drum and become relocated to next production stages. Undesired components of exhaust gases can be taken off after in order to prevent environmental damage.