Pugmill mixer, double/twin shaft blender for sale

pugmill double shaft with quantitative feeder

twin shaft mixer by belt conveyor feeding

double shaft mixer mixing clay with water spry system

Pugmill mixer also named as double shaft mixer or twin shaft mixer, is a kind of continuous blender which mixes, kneads and moistens the mixture to optimize the blending and disintegrating effect.

The forward and reverse alternating screw paddles are used to make the materials advance alternately in the ω-shaped mixing tank, which has the characteristics of strong mixing ability and uniform feeding. It is suitable for mixing and humidification of loose materials, such as coal humidity control, and can also be used as a pretreatment equipment before intensive mixing.

Served Industries: Refinery, Energy / Power plant, Mining, Fertilizer, Food industry, Flour – milling, etc.

Common material: cement, dry dust, ores, coal, clay, fertilizer, sand, etc.

Working Principles

A pair of mixing shafts is intalled in the mixing tank, which are the active mixing shaft and the passive mixing shaft. The two ends of the mixing shafts are supported by the front and rear bearing seats, and the two ends of the mixing tank are respectively sealed by the sealing seat.

Mixing paddles are installed on the shaft according to the direction of screw propulsion, and the rotation directions of the two shafts are opposite. When the material is rotated by the mixing paddle, it is mixed and moved forward. The uniformity and residence time of the material mixing mainly depend on the angle between the paddles and the shaft and the rotation speed of the shaft.

The material is fed from the top of one end of the mixer. When the two horizontal shafts rotate, because the paddle is installed at a certain angle, the paddle on the shaft rotates in a screw shape, pushing the material forward along the shaft, and the shafts rotate together to drive the stirring and pushing of the paddles. Rolling up and down and moving left and right by extrusion, the material is gradually mixed evenly, and moves to the discharge end, and finally discharges at the lower opening at the other end.

Equipment equipped with the liquid adding device will add liquid when the material enters the mixing chamber, and fully wet and mix it during the mixing process.

Structure and Main Components

structure of double shaft mixer

1. Transmission part 2. Feeding port 3. Paddle 4. Mixing tank 5. Twin shaft 6. Frame

Mixing tool (paddle and shaft)

The mixing is transmitted from the transmission wheel to the main shaft through the pin coupling. The special shaft mixing paddles welded or equipped on the main shaft rotates synchronously, turning the material evenly in the mixing tank, making the material fully mixed. Thus greatly reducing the residual amount of the material.

Transmission part

The transmission is driven by the motor to drive the pulley, V-belt, reducer, etc. to make the main shaft rotate. The reducer and the working section of the main engine are made of nylon pins as the transmission joint, and are driven by the transmission mechanism, which is convenient for assembly and maintenance.

The force from the gear motor through the coupling is transmitted to the cylindrical gearbox, which transmits rotation to the mixer shafts. The drive system allows you to compensate for possible misalignment of the shafts due to installation errors, under shock, vibration and dynamic loads, guarantees high torque on the mixer shaft and overall reliability of the equipment.

Frame

All working parts of the machine are installed and fixed on the frame, and the frame is welded with thick steel plate and channel steel.

Features

The special paddle shape design can make the materials mix in an orderly manner. The paddles are arranged at different angles along the shaft direction, which is more conducive to the improvement of mixing accuracy.
The mixing process is gentle and does not destroy the original state of the material.
The paddles are made of high wear-resistant materials. Surfacing welding wear-resistant electrodes, thermal spraying cermets, and ceramic paddles are used when required.
The transmission method can be directly driven by double output shaft reducer through universal coupling to realize pure torque input power.
When used for moisture control, special atomizing nozzles and a liquid supply system with adjustable flow rate are used to ensure uniform humidification of materials.

Applications & Materials

Mixing and blending: FGD scrubber sludge, fly ash, and lime for SO2 neutralization, municipal sludge for composting facilities, pigments and dyes, and other processes combining moist and dry feed materials, gangue, shale, tailings, construction waste, clay and fly ash mixing for clay and tile making.

Agglomeration and dedusting: Granulation of agricultural chemicals, fertilizers, chemical consumer products, carbon powders, flue dust from dust collectors in power plants, animal feed, cement pelletizing pre-agglomeration, etc.

Material conditioning: Fly ash, cement or lime kiln dust, foundry dust, iron oxide, friction material waste, lead fume, zinc oxide, copper reverts and concentrates.

Customizing

Heavy duty

Wear-resistant surfacing paddle

Double shaft transmission

Pug sealer

Shell: carbon steel, stainless steel, and abrasion resistant steel
UHMW liners available
Liquid addition ports available
Hard-faced paddles available for abrasive applications

Parameters

Model	Rotating diameter (mm)	Mixing length (mm)	Capacity (m3/h)	Power (kW)
MTS0432	450	3200	15-20	15-18.5
MTS0540	530	4000	30-40	18.5-22
MTS0640	630	4000	50-70	22-30
MTS0740	750	4000	70-80	30-37
MTS0940	900	4000	110-130	55-75
MTS1140	1100	4000	190-210	75-90
MTS1250	1200	5000	250-280	2*55
MTS1350	1300	5000	320-350	2*75
MTS1450	1400	5000	450-540	2*90
MTS1562	1500	6000	550-650	2*110