The construction of rotary dryers includes a vessel (drum) that rotates and tumbles materials inside whilst the air flows through causing evaporation of the moisture. Additionally, vessels include lifters linked to the shell of the vessel. These lifters constantly shuffle and tumble the material allowing for better drying.
Depending on the properties of your own product, it is possible to set the size of drying (retention of time) and optimal temperature. This will help you to get the material to required condition. The vast majority of standard models are designed for multiple types of drying processes. However, we manufacture rotary evaporator that can fit your purposes even better than standard equipment. There is a plethora of things that we consider when designing a custom rotary dryer.
Construction of Rotary Dryers.
Shell – The efficiency and longevity of the rotary dryer greatly depends on the material in the shell. It can be made of a rich selection of alloys with the most typical choices being stainless-steel, Inconel, and carbon steel. Depending on the requirements of your production process, the shape and size in the shell may be altered. Shell thickness can also be adjusted in accordance with desired amounts of heat retention. Additionally, shell may have a choice of sealing that enables to contain heat better. Note that the shell is probably the most essential elements of the construction and deficient excellence of the shell will negatively affect both efficiency and longevity of your own equipment.
Combustion chamber – This part of the construction is mainly responsible for generating hot gases through combustion of fuel. Chamber also sets the direction of air-flow which may be co-current or counter current. Depending on the requirements of your production cycle, co-current or counter current dryers may be better. Chambers prevent materials from contacting with flame. There is certainly a lot of options and modifications which can be applied to the combustion chamber. Another essential feature is that combustion chambers can be utilized in combination with a multitude of burners. A combustion chamber defines the efficiency of both energy consumption and heat transferring. This means that a subnormal part will reduce the efficiency of your own equipment.
Burner – Burner generates heat by, since the name suggests, burning fuel. The quality of the burner will impact the efficiency of fuel usage. It is possible to modify a burner to work with a number of fuels like propane, natural gas, solid fuels, etc. Burner ought to be chosen depending on the requirements of the production process.
Material Feed – The area of the construction where the material enters the vessel. It will always be called feed chute. This area of the construction should be made from robust materials to avoid wearing. Simultaneously, accretion risks should also be considered.
Air Seal – The environment seal prevents material from falling out of the vessel with the breech between the drum and combustion chamber. You should pick the right kind of the seal based on the kind of the fabric that you deal with.
Drive Assembly – In order to work, rotary dryers need engines. Drive assembly is really a mechanism that combines various parts of the energy block. The setup may be different depending on your particular requirements. Amongst available choices: pin and gear, chain drives, friction, and direct drive. Different setups serve different purposes. For instance, chain/sprocket system is good for small application where 75 horsepower is ample. On the contrary, gear/pinion system is a lot better for heavy-duty purposes where you need more power. In order to control power output, your drive assembly could be equipped with a reducer. Small drums could be also powered by way of a friction drive system that actually works on a shaft mounter engine and reducer. The direct option 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 best setups with both an engine and reducer connected directly to the shaft.
Riding Ring – This can be a essential part for your shell. A small pressure-consuming add-on drastically reduces mechanical wear of the equipment.
Thrust Rollers – Supportive mechanisms for your riding ring that allow you to move it or fixate its position.
Trunnion Wheels – This part of the construction takes from the shell a lot of pressure. Trunnion wheels be sure that the rotating motion is smooth which the drum never skews its rotation axis. This part is generally build cheap because it is difficult to prevent mechanical wear. Trunnion wheels are simple to replace.
Lifters/Flights – Depending on the type of the fabric that you will work with, lifters may or may not be necessary. However, flights are often utilized to increase the efficiency of the industrial drying process. Flights pick up the fabric and drop it down so the hot air goes right through the curtain formed from the falling material. Lifters may be tjihbx depending on the form of the material.
Discharger – The rotary evaporator will be the portion of the construction that functions as the outlet of the dryer. This part is usually attached to the cooler that lowers the temperature of the material for more processing.
Discharge Breech – In order for the merchandise and off-gases to go out of the drum and proceed, they need to glance at the discharge breech. This area of the construction allows worked gases to become released and also the product to go out of the drum and become relocated to next production stages. Undesired elements of exhaust gases can be taken off after in order to prevent environmental damage.