Mixers and Grinders

Grinder for installation on pipeline

   

Twin shaft grinder, designed specifically for efficient grinders frame treatment of sand. The machine allows removal (pull back) of the cutter chamber for servicing and maintenance without having to disturb the pipeline arrangement. If required, a temporary screen can then be fitted and the system run whilst work on the cutter chamber is carried out.
Capacity - 0 - 500 m3/h, working pressure – up to 6 bar.

 

Materials of construction:


Body: Cast ductile iron.

Shafts: High specification alloy steel, with a 390-410 HV minimum surface hardness.

 

  • Cutters and Spacers: Chromium/molybdenum alloy steel, hardened, tempered and ground with a 450-505 HV minimum surface hardness.
  • Mechanical Seals: Maximum working pressure of 6 bar, with faces of solid tungsten carbide.

Design Features:

 

  • Cutters: can be disassembled without pipeline disconnecting from nipples.
  • Mud trap: patented built-in cutter stack with vents for sand collecting.
  • Cantilever Shafts: Cantilever shaft design

 

Wastes utilization grinder

   

Heavy duty, twin shaft, low speed, high torque grinder and remains one of the most effective solid grinders for bulk reduction, material reclamation and profit from waste.
Ideally suited for screenings/bio-degradable waste processing, the unit can be supplied with a feed hopper or delivery chute to assist material entry and discharge. By introducing organic waste to gasifier, gas production is increased. Gas yield for combined heat and power is also increased and the need for costly disposal is eliminated.
 
Available in 2 sizes:
• 600 mm throat with single drive (11 kW)
• 1000 mm throat with double drive (11 kW and 7.5 kW)
 
Materials of construction:

Body: Cast iron.

Shafts: High specification alloy steel or stainless steel options designed to suit particular duties are available.

Cutters & Spacers: Chromium/molybdenum steel.

Base frame: A heavy duty fabricated steel structure suitably strengthened to prevent twisting during machine stall condition.

 

Drive: Integral motor/gearbox speed reducer type, close coupled to the main grinder module by a solid steel coupling.

 

Design Features:

Cutter Shafts: On the larger unit, each cutter shaft is independently driven by a gearbox mounted at opposite ends of the machine. With independent shaft drives, transfer gears or chains are eliminated and power transmission is direct in line from gearbox to the shaft via a heavy-duty coupling.

 

Cutter Chamber: The cutter chamber and gearboxes are independently mounted on a heavy fabricated steel structural base frame creating both a much stronger machine construction and allowing easier access to individual parts.

Grinders for installation in open channels and pipelines

Designed to replace high-speed grinders, which energy consumption is up to 85 % higher. Typically it has a cutting tip speed of only 27 % of a high-speed system and also much lower vibration and noise levels.

 
 
 

Being of a compact size for the smaller capacity flows, the unit operates as an independent unit for open channel or pipeline configuration.
Capacity range 0-60 m3/h on raw sewage and comes with a 3-year warranty when installed to our recommendations.

Materials of construction:


Body: Cast iron, stainless steel or bronze.

Shafts: High specification alloy steel hexagonal bar, with a 600-670 HV minimum surface hardness.

Cutters and Spacers: Chromium/molybdenum alloy steel, hardened, tempered and ground with a 450-505 HV minimum surface hardness.

Mechanical Seals: Maximum working pressure of 6 Bar, with faces of solid tungsten carbide and full multi sprung design to ensure continuous sealing.

Drive: Integral motor/gearbox speed reducer type, close coupled to the main grinder module by a solid steel coupling. 

Grinders for installation in channels

   

Engineered and improved experience in wastewater grinding, this grinders are available for pipeline or channel installations covering all applications where raw sewage, sewage screenings and sludge maceration is involved.
Capacity - up to 500 m3/h.

 

Materials of construction:
Body: Stainless steel, cast iron or bronze.
Shafts: Constructed from high specification alloy steel hexagonal bar, with a 600-670 HV minimum Surface hardness.


Cutters & Spacers: /molybdenum alloy steel, hardened, tempered and ground with a 450-505 HV minimum surface hardness.


Mechanical Seals: Maximum working pressure of 6 bar with faces of solid tungsten carbide and multi-sprung design to ensure continuous sealing under the most arduous duty and shock loading conditions.


Drive: Integral motor/gearbox speed reducer, close coupled to the main grinder module, by solid steel coupling capable of transmitting full output torque of the gearbox under a stall condition.
 
Design Features:
Bearings: Protected by mechanical seals.
PLC (programmable logical controller): Designed to protect the machine against damage from overloads

 

Mixers

JSC Gandras Energoefektas more than 10 years successfully co-operate with company Plenty, who is a leader in mixers market.

We’ll offer you the best mixers with the following installation possibilities:
 

  • Top Entry
  • In the pipeline
  • Side Entry
  • Submersible mixer

Our company supplies two types of mixers:

  • Fixed-Angel
  • Swivel-Angel (mixer angel of entry can be varied by means of mechanical (manually) or electrical actuators (for continuous automatic angel of entry changing). The motor and mixer shafts are connected by a belt drive or gearbox.

Mixers, supplied by our company, are indented for mixing, preparing and storage of:

  • Oil products (machine oil, petrols, diesel oils, fuel and bunker oils);
  • Vegetable oils (sunflower-seed oil, olive oil, colza oil, palm-oil…)
  • Yogurts
  • Milk cocktails (for industrial production only)
  • Mayonnaise
  • Alcoholic drinks (cocktails, vodka, cognac, whisky, liqueurs, vermouths, rum, gin)
  • Wastewater

Our supplied mixers advantages, using mixers in Crude Oil and Heavy Oil Storage Tanks:

  • you can control and prevent the accumulation of bottom sludge and water pockets in crude oil storage tanks;
  • you will maintain homogeneity of refinery finished or intermediate products (mixing two or more products). Heavy fuel preparation for firing;
  • water with fuel oil content utilization
  • screw pump protection from entry of the water
  • waste products cleaning from the crude oil and heavy oil storage tanks
  • heat transfer. Mixers improve efficiency and reduce costs for heavy oil heating. (Mixer design (possibility to change angle of entry inside the tank automatically) allows to reduce the time for heating by 35-45% and to reduce the energy consumption by 3-5%. Sand accumulation, fuel oil agglomeration and coke generation is entirely excluded).
  • mixer design allows to carry-out servicing (replacement of bearings, mechanical seals, belt, reduction gear) without draining the tank.

Our supplied mixers differences from other companies’ mixers
1. Servicing. Original cut-plate construction of our supplied mixers allows to carry out maintenance (replacement of mechanical seal, bearings etc.) without draining the tank. 

2. Bearings. Mixers are completed with standard bearings and mechanical seals. The bearings of our supplied mixers are in oil reservoir outside the tank and do not require maintenance. Mean lifetime - 40000 hours.

3. Impeller design. The high efficiency type true helical pitch impeller with forward rake is specially designed for effective and controllable flow. Each impeller is accurately cast as one-piece component and ensures reliable operation. If mixer is selected correctly, there is no need to dismantle impeller during mixer mounting.

4. Belt-drive, reduction gear. Beside reduction gears, our suggested mixers are completed with antistatic belt-drive, which has the efficiency of 98-99%. The belt design excludes the slippage effect entirely. The belt is easily reachable (it is on the mixer and motor shaft end), protected by spark proof and weatherproof guard, which is removable without any special devices.

JSC “GANDRAS ENERGOEFEKTAS” produces mounting flanges for all types man-holes (oval, round, square). You would need just to screw the nuts!

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