Vacuum Pump and Blowers

Approx. Rs 20,000 / PieceGet Latest Price

Product Details:

Halward offer LIquid Ring / Oil Lubricated Vacuum pumps by HHV and Elmo Rietschle.

A liquid ring vacuum pump has an impeller with blades attached to a center hub, located in a cylindrical body, but off-set from the center. In Diagram 1A on the right you can see the blades near the top of the pump are closer to the outside wall than at the side of the pump. They are furthest away at the bottom of the pump; you can see this more clearly in Diagram 1B. The impeller sits between two end plates (port plates) which have shaped holes cut into them called ports. The pump requires a liquid (also called the sealant) to create vacuum as follows. Prior to starting the pump, it should be partially filled with the liquid sealant (typically to the center of the body, although this can be plus or minus a couple of inches). The liquid can be water (making it a water ring pump), oil or a solvent, depending upon the application. As you can see in the Diagrams, when the pump is at rest, some of the impeller blades are immersed in the sealant liquid. When the pump starts, the impeller slings the liquid sealant by centrifugal force, to the outside walls of the body, forming a ring of liquid at the outside walls of the body. Because the impeller is off-set from the body, some of the blades are fully immersed in liquid, and some are almost out of the liquid. The area of void space without liquid, is sealed off between the liquid (and hence the term "sealant") and between the impeller blades, called an "impeller cell". As we follow one impeller cell from the top of the pump, counter-clockwise, you can see the liquid recedes from the center hub, acting as a liquid piston to create a larger cell. This is the suction of the pump, drawing in air, gases, or vapors thru the "inlet port" at the sides of the impeller. After impeller cell passes the inlet port and travels toward the discharge port, the sealant liquid is forced back toward the center hub of the impeller, creating the compression step. As the impeller cell passes the discharge port, the compression is at its highest, and the gases, along with some of the liquid sealant are exhausted thru the discharge port to atmosphere. Although the diagrams show a very smooth ring of liquid, in actuality, the liquid sealant is highly turbulent, which is why some of the liquid sealant is discharged with the gases. A two-stage pump is also a much better choice if you are handling solvents at higher vacuum levels (higher than 23"HgV). This has to do with the effect of sealant temperature rise being spread across two stages and its relationship to the sealant vapor pressure in liquid ring vacuum pumps.

Approx. Rs 8,000 / PieceGet Latest Price

Product BrochureProduct Details:

We are offering these in wide range of specifications in order to meet the diverse requirement of the industry. These are widely used in several industries like packaging, filtration, distillation, evacuation and several others. These are belt driven and are based on advanced technology. Our competent team uses premium grade raw materials along with imported components while developing our products. Owing to modern technology, these run on low power and require minimum maintenance. Moreover, these are specially developed to offer interrupted operation over a long duration. The interested clients should contact us to get our products. Being noteworthy Belt Driven Rotary Vane High Vacuum Pumps suppliers, we are offering our products at reasonable rates. We are capable of entertaining requirements of international markets. We are committed to deliver your consignment in stipulated time frame.

Features:

• Heavy duty cycle
• Reliable operation
• Low maintenance cost
• Cost effective operation
• Excellent quality

Approx. Rs 1 Lakh / PieceGet Latest Price

Product BrochureProduct Details:

Halward offers Dry Screw Oil free Vacuum pumps by Elmo Rietschle.

Two parallel bearing-supported, intermeshing screw rotors (3) having opposite threads synchronously and contactlessly counter-rotate in a cylindrical housing (2) that tightly encloses them, and together form a multi-stage pump. Because of the counter-mesh of the two rotors, the volumes sealed in each thread are advanced along the rotors to the outlet (4). The pump has no valves at either the inlet (1) or the outlet. When a displacement volume reaches the outlet opening, the pressure is equalized with the atmosphere. This means that atmospheric air flows into the displacement volume and is then discharged again as the rotor turns. This pulsing gas flow generates a high level of dissipated energy and heats the pump. The dissipated energy can be minimized by means of internal compression. This internal compression is achieved by reducing the thread pitch in the direction of the outlet. The gaps between the housing and the rotors, as well as between the rotors relative to one another, determine the ultimate pressure which a screw pump can attain. The geometry and the gap configuration which results when the rotors engage with each other also significantly influence the ultimate pressure. Because the dissipated energy that is generated by the pulsing gas flow heats the pump on the outlet side, cooling is required at precisely this location. The gap between housing and rotors is a function of the temperature differential between the warmer rotors and the cooled housing. The amount of heat produced and the temperature are a function of the inlet pressure range. Temperatures are lowest at high inlet pressures (nearly atmospheric), as virtually no compression work is performed here and the displaced air transports sufficient heat out of the pump. In addition, the high gas flow also prevents oscillation of the gas in the last stage. During operation at ultimate pressure (p < 1 hPa), the oscillation of the atmospheric air produces higher temperatures at the outlet area, since no gas is passing through the pump and therefore no heat is being transported out of the pump. Hepta Dry pumps are dry screw pumps with internal compression. The screw rotors have a symmetrical geometry with variable pitch. These pumps do not have an end plate with control openings; instead, the gas is discharged axially against atmospheric pressure. Because of the internal compression, the volume of pulsing gas is low. This results in lower power consumption, quiet operating, uniform temperature distribution within the pump and low cooling water consumption. This makes these pumps extremely cost-effective, in spite of their robust design.

Approx. Rs 10,000 / PieceGet Latest Price

Product Details:

Halward offers indigeneously manufactured Twin Lobe blowers to suit a variety of applications like conveying, aeration, water treatment plants, etc.

Twin lobe rotary air blowers belong to the category of positive displacement blowers. They consist of a pair of involute profiled (shape of 8) lobes/rotors rotating inside an oval shaped casing, closed at ends by side plates. One lobe is the driving lobe, which is driven by the external power, while the driven lobe is driven by a pair of equal ratio gears. Both lobes rotate at same speed but in opposite directions. As the rotors rotate, air is drawn into inlet side of the cylinder and forced out of the outlet side against the system pressure. With each revolution, four such volumes are displaced.

l Free and Without Compression:

• The air, which is forced out, is not allowed to come back due to the small internal clearance within the internals of the machine, except a very small amount (SLIP). There is no change in the volume of the air within the machine, but it merely displaces the air from the suction end to the discharge end, against the discharge system resistance i.e., no compression takes place in the machine. Since the lobes run within the casing with finite clearances, no internal lubrication is required. The air, thus, delivered is 100 per cent oil free. These blowers deliver, practically, a constant flow rate independent of the discharge pressure conditions. The flow rate is dependent, largely on the operating speed.

Due to these constructional features, it has the following distinct characteristics:

• Flow largely depends on operating speed.
• The input power is largely dependent on the total pressure across the machine.
• The suction and discharge pressures are determined by the system conditions.
• The temperature rise of the discharge air and machine largely depends on the ƒ¢p across it.

Approx. Rs 5,000 / PieceGet Latest Price

Product Details:

Halward offers Direct Drive Vacuum Pumps by HHV Pumps and Elmo Rietschle (Gardner Denver)

Direct Drive, Oil-Sealed, Rotary High Vacuum Pumps are compact in size, as they are directly mounted on the motor flange. These pumps are light weight, well balanced and have exceptional size to performance ratio. These pumps have high pumping speeds and high water-vapor tolerance. The oil consumption is extremely low and they are air cooled.

Applications:

• These pumps are used extensively in industry and laboratories for production of medium and high vacuum. They are used as backing pumps in series with roots blowers, diffusion pumps etc. These pumps find applications in vacuum coating, molecular distillation, vacuum metallurgy, freeze drying, vacuum impregnation, air conditioning and refrigeration, vacuum lifting devices, packaging machines etc.

Single Stage Vacuum Punps is one of our fastest moving product covering the complete range (16 to 300m3/h) from packaging to industrial/simulation applications.

Our inventions in designing of the pump delivers a whole new features for the end users.

Intelligent gas ballast technique ensures lesser oil contamination.

Approx. Rs 50,000 / NumberGet Latest Price

Product Details:

Halward offers Medical Vacuum System for Hospitals consisiting of Vacuum Pumps, Suction and Exhaust Filter, Bacterial Filters, Receiver Tank and Control Panel.

TECHNICAL DETAILS OF MEDICAL VACUUM SYSTEM: MVC

Vacuum System – Vertical Arrangement

Vacuum pumps

Rotary vane type

With mineral oil ISO VG100 MULTI - LUBE

Oil flooded – air cooled

Fine mesh filter on the suction side

Integrated non-return valve

Gas ballast valve

Oil filter with patented bayonet lock

Rubber feet anti vibration

Sound cover

Initial oil filling

Scope Of Supply:

Base Plate frame

For mounting all system components

Powder-coated according to RAL 9003 (signal white)

THREE pumps are mounted on shelves one above the other. This allows a small footprint of the system.

Slide out shelves and gallows for chain block support for easy handling and maintenance, thus the pumps can be handled by one person without any problem

Interlock system to the shelves for a high safety level (prevents system from toppling).

For connection to the pipe network, the vacuum and exhaust connections of the pumps are manifold to one connection for each.

On the suction side each pump is equipped with a shut-off-valve

Two valves to connect two plate base frame and for connecting to a vessel Flexible connection hose for suction and exhaust air

No foundation is required for installation and bolting to the floor is not necessary.

Constant Vacuum Valve: As an 2/2 way solenoid valve to keep the pressure constant and to avoid frequent on- off switching of the Vacuum pumps.

 

Room Temperature Switch : To issue a warning if the room temperature exceeds 50 degC

Approx. Rs 50,000 / PieceGet Latest Price

Product BrochureProduct Details:

Halward offer Indigeneously manufactured as well as imported Robuschie (Gardner Denver) make Tri Lobe Blowers from Italy.

Gardner Denver is shaping the standards of performance and reliability in the design of positive displacement blowers and vacuum pumps. The tradition continues with the TriFlow Series vacuum pumps. Each TriFlow is engineered for a wide range of commercial and industrial applications. Specifically, TriFlow is the choice of leading Original Equipment Manufacturers (OEMs) of truck mounted vacuum cleaning systems.

TriFlow offers operators significant benefits and advantages:

• Great performance and efficiency in a compact design 
• Quiet operation 
• Highest quality materials and construction 
• Flexible installation capability 
• Reduced maintenance 
• Available in 3 sizes – 406, 408 & 410 
• TriFlow delivers.

TriFlow: Setting the Industry Standard
Quiet Operation:

• Three lobe impeller geometry allows higher throughput while creating lower pulsation levels than two lobe units, resulting in reduced noise 
• An internal feedback porting arrangement contributes to the further reduction of noise.

Quality Promise:

• Backed by one of the largest distributor networks in the industry.
• Every TriFlow vacuum pump is built under rigid ISO 9001:2000 quality standards.
• Each TriFlow is individually tested to meet rigorous performance specifications.

Warranty Period:

• 18 months from the date of shipment or 
• 12 months from the date of installation, whichever occurs first.

Quality Construction:
Each model incorporates the following for longer service life, reduced downtime and maintenance

• Highly reliable Dual Splash Lubrication 
• Heavy duty bearings 
• High strength timing gears 
• Integral heat dissipation fins on the case to help maintain proper clearances.

Oil-Free Air Delivery:

• Piston ring seals are incorporated on each impeller shaft with a lip seal on the drive shaft, providing superior sealing to prevent oil leakage into the air chamber.
• Independent oil sumps prevent cross contamination and allow the vacuum pump to operate safely on an incline when used in carpet cleaning applications.

Flexible Installation:

• Unique, integral mounting surfaces are precision machined for ease of installation and drive system alignment.
• Critical mounting dimensions are similar to those of existing two lobe positive displacement vacuum pumps allowing for system upgrades.
• The inlet and outlet ports include both flange and FNPT connections for ease of plumbing.