The following are the major components of the Coating pan system
Pan.
The Pan is elliptical in shape with a circular opening in the front and a mounting pad for fixing the pan to the drive shaft. Pan is provided with half round pipe tubular baffles welded inside the pan so as to generate tumbling action of tablets/pellets.
Drive.
Drive is through a suitable HP Motor connected to gearbox assembly by means of pulley and belt arrangement. A boss flange is directly mounted on the gearbox output shaft and is provided with holes for bolting the pan-mounting pad. The Pan mounting pad is provided with threaded holes for bolting and locating pins for locating the pan on the flange.
Mounting.
The mounting is so designed that the Pan is easily accessible by the operator. The drive assembly has two optional ways of mounting. In this unit the second option type of assembly is done. The motor and gearbox are directly mounted on a slide which has provisions for moving the motor closer / away from the gearbox. A hand wheel with lead screw attachment is fixed to the slide. The L' plate is hinged near the pan and at the farther end is fixed on two numbers angle adjusting bolts. By tightening / loosening the bolts the plate angle can be varied. The L' plate is covered with louvered MS/SS covers on all the sides with a cutout in the front for the gearbox output shaft, and a oil filling hole with cover on the top side, to facilitate filling oil in the gear box. The plate is supported on a specially designed rectangular pipe structure. Pan Tilting Arrangement: Pan and Drive assembly can be tilted with the help of bolt nut arrangement provided at the main mounting square channel pipes. This arrangement is operated manually with the help of the spanners in order to increase or decrease the angle. Degree indication of the rotation is fitted at the other end of the mounting channel.
Hot Air Blower.
Motor is directly coupled to a centrifugal blower employed to supply hot air to the system. The blower can be mounted outside the room and air is passed through air electrical heaters and carried by circular ducting, with a manually operated damper at approachable height, to the Pan. The ducting is provide with a temperature sensor for temperature measurement / control and is also provided with reduced cones to fix the heater box. Optionally the blower inlet is provided with inlet filter and filter housing. The ducting is provided with a flexible bellows with provision to fit into the lid of the pan. The end of the pipe is provided with a fish tail inside the pan to spread the air uniformly over the tablet bed at higher velocity. Interlocks: If hot air blower will not start, heater will not be ON. Initially, when Heaters start, both the banks raise the temperature. Once the set temperature is achieved, the heaters will be switched off. Separate temperature Indicator / Controller is provided for the heater .
Exhaust Blower with dust collector.
2 HP motor directly coupled to a centrifugal blower is used to carry away excess fumes generated inside the Pan which is connected to a dust collector which consists of fiter bags where the air gets filtered and the dust gets settled down. The blower is mounted outside the room and a circular ducting, with a manually operated damper at approachable height, is used to carry away the air. The ducting is done in SS304 construction. Manually operating bag shaking is done in the dust collector when there is a choking inside the filter which is indicated in the manometer fitted outside the dust collector body. When the pressure gets raised by doing bag shaking process manually the dust particles will be settled down.
Spray System.
The whole unit is mounted on Caster Wheel Trolley. The system consists of the following.
Solution Preparation insulated Tank :
Solution preparation insulated tank with electrical stirrer motor, at the top, electrical heaters 1.5KW each is fitted in the tank for heating the solution in Tank. These Heaters are controlled by PT-100 Sensor and Temperature Controller provided on main panel separately for Tank. This unit is having arm arrangement to insert the gun inside the Coating Pan and to adjust the up and down movement of the gun.
Peristaltic Pump:
If a fluid has to pass through a tube then a Peristaltic Pump can speed its flow, control its flow rate or dispense it in precise volumes. It sprays solution in the Coating Pan through spray gun. Output of this pump is depended upon the speed. VFD is provided to vary the speed of the pump. Electrical Agitator. a motor with SS shaft and propeller blade is mounted on the Lid , to keep the liquid in agitated condition. Air Manifold is mounted on the tank and has provisions for air inlet from supply line and distribution outlets to Gun. The inlet and each of the outlets is provided with a needle valve for flow control. Spray Gun / Nozzles. The Spray gun is provided with inlets for liquid and air connection. The gun is mounted on an adjustable stand, and gun movement in all three planes is possible by adjustment available on the stand. The gun has a spring loaded lever for starting / stopping spraying. This lever can be operated.
Electrical Agitator.
a motor with SS shaft and propeller blade is mounted on the Lid , to keep the liquid in agitated condition. Air Manifold is mounted on the tank and has provisions for air inlet from supply line and distribution outlets to Gun. The inlet and each of the outlets is provided with a needle valve for flow control.
Spray Gun / Nozzles.
The Spray gun is provided with inlets for liquid and air connection. The gun is mounted on an adjustable stand, and gun movement in all three planes is possible by adjustment available on the stand. The gun has a spring loaded lever for starting / stopping spraying. This lever can be operated.
• Manually.
• Or locked in ON' position and air supply to gun can be switched ON / OFF
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