HARI MACHINES LTD.

Sundargarh, Odisha

An air separator comes in handy when very fine materials are to be separated from coarse and where normal vibrating screens tend to have very low efficiency and give frequent trouble by choking etc. Fine materials of 200 mesh or more are separated from coarse when a material containing fines is passed through the separator, with a separating efficiency of more than 95%. This can be used for separation of even coarser materials upto 1 mm. The efficiency of the separator though tends to be lower as more and more coarse material is separated.

Working- Material is fed to the separator through a chute at the top which can be connected directly or indirectly to the outgoing chute of the mill. It falls through the admission cone onto a spray plate which is rotating at a high speed. This throws the materials towards the outside by centrifugal action. The various fans are also rotating at a high speed and they generate an air current the lighter material rises up, getting separated from the coarse grains. It passes through various fan blades, taking the path shown by the arrows. While moving up, further separations take place.When the air starts flowing downwards near the outer casing the fine material drops off and comes out through the cone of the outer casing. The cone can be fitted to chutes directly over the hoppers or to conveyors to transport the fines as desired. (Suitable air sluices may be provided if desired.) The air again goes into circulation through the shutters as shown

Construction- The fabricated steel plate body of this separator has been so designed as to provide ease in erection and transport. Since material is going to remain in contact with the casings, they are suitably lined with plates to increase the life of the body. All the fans are of removable type so that they can be easily replaced when worn out. Man-hole door is provided for easy access within the separator while changing of worn out parts and other maintenance work. Suitable adjustments are provided with the fans to control the fineness of the material to be separated.

Feed- For maximum efficiency the feed to the separator should be continuous and at a constant rate. If the grinding of the feed is uniform this also helps in better separation

The 400T Friction Screw Press, has been indigenously designed and developed by Hari Machines Ltd. for manufacturing large high density refractory bricks. Introduced in early eighties, the machine became an instant success with the refractory manufacturers throughout the country. It was an ideal substitute for the imported hydraulic presses because of low capital cost & performance comparable with even 1200T hydraulic press. Today, around 70 nos.of such presses have been supplied to the leading refractory manufacturers all over India. The machine has been an operational success for all refractory application and is regarded as one amongst the best formanufacture of high density bricks. Hari Machine Ltd. has been closely associated with most of the & leading Refactory units in the country for several years. Its research & development team is constantly on the work of revolving new & better designs conforming to future requirements. Keeping pace with changing technology Hari Machines Ltd. came out with new state-of-the-art.design PLC controlled 400T FSP which added remarkable improvement in the press with regards to better & consistent brick qualitiy & improved productivity.

SALIENT FEATURES

Sturdy DesignClosed frame construction consisting of base & head & columns rigidly clamped bytie rods makes it suitable for heavy duty application.xing.

Effective De-AiringProvision of 'Soft' & 'Hard' pressing strokes (which can be pre-set) improves bulk density of brick & eliminates lamination to a great extent. Degree of softness & hardness can also be adjusted.

Floating Mould TableMould table suspended on four pneumatic cylinders 'Float' during pressing resulting in bottom pressing effect which improves bulk density of the brick as well as the bulk density distribution from top to bottom.

PLC - ControlsSingle cycle operation of the press through PLC (Programmable Logic Controller) results in operational consistency reducing brick rejections & promoting over all quality. It also ensures smooth & trouble free operation thus resulting in less downtime & higher productivity.

Efficient Hydraulic Brick EjectionTwo speed design i.e. high force low speed & low force high speed ensures slow & smooth brick ejection in the beginning & faster during the balance ejection stroke. The ejection pressure & speeds are adjustable.
Hari Machine's commitment to product excellence & high quality standards is backed by complete in-house facilities of fabrication, machine shop, assembly & testing. The capacity to draw on all its resources to supply high quality machinery and provide technical assistance & after sales service on a continuing basis to its customer has enabled Hari Machines to achieve the reputation of a Reliable Machine Manufacturer. A well equipped Machine shop to handle intricate machining jobs involving high degree of precision. A gamut of Machines including modern CNC Machines, Heavy Horizontal & Vertical Boring Machines, Heavy lakes Universal Grinding & Milling Machines etc.