Cannery Machinery Bangalore, Karnataka

Aerators effectively disintegrate foundry moulding sand to produce fluffy sand that would ram to a uniform density in moulds and produce impression of finer details. Aerators are normally installed at the outlet of Mullers or on top of a distribution belt conveyor after Muller and before molder’s hoppers. Aeration is effected by rotating combs.

The sand final temperature and moisture, accurately controlled, improves the quality and surface of castings, decreasing the rate of rejects. • Fluidized Sand Coolers cool and homogenize the sand in continuous operation and provide, independently of sand inlet temperature, an evenly cooled and dampened material of uniform quality. The +/- 0, 3% tolerance is so little that the intensive mixer will be considerably relieved. • They are equipped with a special fluid bed stainless steel screen deck which allows the air to pass through the sand layer. The automatic moisture control system has the task to ensure the optimum water addition and to avoid over or lower moistening. • The biggest model in the range is 2500 mm wide and 10000 mm long and can handle 200 ton/h sand reducing the temperature from 140°C down to 40°C with a range of moisture in between 1.8 – 2.5 %. Product ranges from capacity of 10 tons/hr to 80 tons/hr.

GENERAL DESCRIPTION AND TECHNICAL SPECIFICATION OF BELT CONVEYORS These specifications apply to belt conveyors incorporating rubber and cotton/nylon fabric belting for handling foundry sand of 90-100 lbs. per cft. density    1. Belt The conveyor belts will be nylon fabric, 315/3 H. D., grade M-24 or heat resisting quality with 3 mm top and 1.5 mm bottom covers. Heat resisting quality belts will be  for conveyors handling knocked out return sand and also for some conveyors handling the hot sand above 80 degree C. the belts will conform to IS-1891, Part-I and Part-II as applicable. 2. Idlers Load carrying idlers as also return idlers will be 114 mm O. D. idlers. Idler rollers will be made from ERW steel tubes 4 mm shell thickness. The O. D. of the roller will not be machined. The shaft of 20 mm dia. will be of m. s. bright bar. Bearing housing will be of pressed steel design. The rollers will be fitted with SKF 6204 or equivalent deep groove ball bearings and pre-packed with grease for the life of the roller. Troughing load carrying idlers will be concentric and will have 3 rolls, 20 degree trough Inclination. For conveyors which are partly troughed and partly flat such as distribution conveyors etc. some of the troughing idlers will have 12 degree trough inclination for better control of the belt contour. One piece design flat carrying idlers will be provided on conveyors where ploughs are used for discharging sand from the conveyor. Return idlers will also be of flat configuration one piece design. The idler brackets will be fabricated from suitable m. s. sections.    3. Idler Spacing The load carrying idlers will generally be mounted at a pitch of 1200 mm except in case of loading points where the pitch will be between 350 - 400 mm. In case of belt feeders below storage bunkers, load carrying idlers will be spaced at a pitch of 200-250 mm. The return idlers will be space at 2400 mm.    4. Drums of Pulleys The head, tail and snub pulleys will be of mild steel plate welded construction consisting of shell and two end plates on each of which m. s. hub will be welded. The m. s. shaft will be keyed on to hub. The face of the pulleys will be crowned and face length will be 100 mm more than the belt width. The pulley face will be straight approximately for 1/3rd face length in the centre. For the balance portion on both sides of straight length, pulley will have crown. The pulleys will run in externally lubricated self aligning ball bearing plummer block of C. I. construction. The head pulley nominal diameter will be 400 mm and tail pulley nominal diameter 315 mm except otherwise stated. Snub pulleys of 315 mm nominal diameter will be provided for all conveyors having drum centres (distance between head pulley and tail pulley) over 30.0 metres and wherever design demands. The pulleys will be statistically balanced.    5. Head Unit The head unit will be integral unit consisting of head pulley with its shaft, bearing blocks    fitted on m. s. fabricated frame which can be bolted directly to conveyor structure. Pulley with shaft, bearing blocks as well as base frame will be supplied loose for assembly at site.   6. Belt Cleaning Arrangement A spring loaded type belt scraper will be provided for fitting on the head unit. The rubber strip used with the scraper will be soft rubber 10 mm thick and will be fixed by means of slotted holes to facilitate adjustments, necessitated due to wear.    7. Tail Unit The tail unit will also be an integral unit consisting of tail pulley with its shaft, screw type tensioning arrangement fitted on a m. s. fabricated frame which can be bolted directly to conveyor structure. Pulley with shaft, screw type tensioning arrangement and frame will be supplied loose for assembly at site.    8. Take-up Device (Tensioning Device) Screw type take-up device will be provided sufficient to cope with maximum of 2% of belt elongation for all conveyors. All conveyors above 50.0 meters drum centres will be provided with gravity type take-up arrangement.    9. Drive Unit The drive motor will be totally enclosed fan cooled squirrel cage induction motor suitable for operation 415 volts, 3 phase, 50 c/s. A.C. supply system. The motor will be continuously rated to comply with IS-325. The motor will be coupled to the head pulley through an oil immersed worm reduction gearbox. Flexible type coupling will be used between motor and reduction gear as well as reduction gear and head pulley except otherwise stated. The drive motor and gearbox will be mounted on a common m.s. fabricated base frame. Sheet metal guards will be provided for the couplings. All the components of drive unit will be supplied loose for assembly at site.    10. Conveyor Frame The conveyor frame will consist of channel stringers made from ISMC 100 x 50 connected by cross bracing angles. Individual sections of stringers will not generally exceed 5.0 metres length.   11. Conveyor Supports, Platforms and Walkways Vertical supports to support the conveyor either in the pit (this applies to conveyors running underground below zero level) or from top of the platform (this applies to conveyors running above zero-zero level) will be provided. Platforms and operator’s walkway as required for different conveyors may be provided, if specifically ordered by client. Vertical supports for conveyors will be generally fabricated from m. s. angle sections while the platforms and walkways will be fabricated from m. s. rolled steel sections such as channels, joists, angles etc. operator’s walkway will be 750 mm wide and will be designed for a live load of 500 kgs./sq. m. operator’s walkway will be covered with 5 mm thick O. P. chequered plate. Hand pipes will be shipped in random lengths and fabricated at site. Necessary access ladders to platforms wherever required will be provided. Access ladders will consist of angle/channel stringers with open steel  treads 200 mm wide x 600 mm long.

Self Discharge Shake-out  is intended for separating castings from sand with vibrations. At same time castings are also transported for further process. Self Discharge Shake-out main parts : Vibrating motors Shake-out Trough Compression Spring Traverse Weights are installed on both shaft ends. Weights orientation are adjustable so that vibrating force and transport speed can be rmodified. Weights are installed in housing and protected against dust.Stress releving process has been done for traverse to ensure the strength on vibrating force.

Overhead conveyor shot blasting machine with hook is typically designed   to  handle mixed loads of medium and large components which often include fragile and sensitive parts that cannot be tumbled in bulk loads. Overhead conveyor shot blasting machines with hook are ideal for heavy and complex shaped work pieces like: casts, welded constructions, forged and pressed parts, remodeled cold or hot and of various complicated forms, steel bottle, springs, etc. Parts can weight from 5 kg to 10, 000 kg, manufactured in medium and large series. This type of shot blasting machines are mostly used for continuous blast cleaning, desanding and decoring in die cast industry as well for descaling, derusting and reconditioning in metalworking industry. Treated objects are hanged individually or in a cluster on revolving hooks on a closed loop conveyor going through the shot blasting machine. In the process of shot-blasting the treated objects revolve and move back and forth in a jet of abrasive media, which provides best possible uniform blasting results.   Overhead conveyor shot blasting machine with hook housing is protected by wear-resistant manganese steel liners or entirely made of manganese steel and additional protection of the most exposed wear areas. High efficiency of the blasting machine is provided by the automatic and continuous abrasive handling and reclamation system for continued returning and cleaning of the shot blasting media, along with efficient blasting wheels made from wear-resistant materials. Standard equipment of larger VKP shot blasting machines includes: PLC, display, timer, automatic or manual mode, pneumatic cylinders on the door, revolving hooks, automatic start-up of throwing wheels, working-hours counter, etc. VKP blasting machine may be equipped with a magnetic separator, vibration conveyor and variable frequency drive for the throwing wheels.

The casing of Rotary Polygon Screen will be fabricated from 3 mm thick m.s. sheets suitably reinforced with rolled steel sections. The bottom part of the casing will be rectangular in the shape while the top part will be pentagonal or hexagonal in shape and bolted to the bottom part. Removable panels/doors will be provided in the top part of the casing for inspection purpose. A feeding/receiving chute will be provided at one end of the top part to receive sand from conveyor, elevator or similar feeding device. Provision will be made in the top part of the casing in the form of circular opening for connection to dust extraction system. The main driving shaft of mild steel will be carried at each end in externally lubricated self aligning ball bearing blocks. Keyed to the shaft will be m.s. or cast iron hexagonal hubs fixed to which will be m.s. radial arms on which will be bolted the frame carrying replaceable wire mesh screen. Product ranges from capacity of 10 tons/hr to 80tons/hr. For removal of large pieces of scrap and hard lumps of sand etc. which cannot pass through the wire mesh screen and which travel right through to the end of the screen, suitable reject opening will be provided. Drive will consist of  motor with gearbox . Necessary sheet metal steel guards will be provided over the coupling.