Conical Screw Mixer


This mixer is broadly applied for the solid-solid (powder to powder) and solid-liquid (powder to liquid) and liquid-liquid (liquid to liquid) mixings in food, pharmacy, chemical industry, fertilizer, oil field, oil refining, animal remedy, coating, pigment, dyestuff and assistant, metallurgy, smelting, fireproof material, mine, building material, battery, electronic plastic,fodder, cultivation, biological project, health product, ceramic, glass, new material, nuclear material etc. trades. This mixer is greatly suited with mixed materials, will produce no lamination and maceration phenomenon to the mixing combined with thermo-sensitive materials and holds a good suitability to the mixing of rough materials, fine grains and extra-fine powders etc. various grains, fibers or lamellate materials.

Working principle:

The quick autorotation and revolution of the two non-30.jpgsymmetric spires of the mixer makes the material lifted upward to form two non-symmetric spiral material streams from the lower to the upper along with the bucket wall (see Fig. A and B). The revolution movement of the spire driven by the rotating arm makes the material outside of the spire enter the stud envelope line in various degrees, some is mal-positioned lifted and some is thrown out of the stud so as to get the material on the full circumferential orientation continuously renewed and dispersed, the two material streams lifted to the upper are gathered towards the central countersink to form one downward material stream, supplementing the cavity on the bottom so as to form a contra-flow cycle (See Fig. A, B, C, D, ). Because of the compound of the above movements, the materials get quick evenly mixed and hold a higher mixing degree (see Fig. E, F).

Product introduction

1.Flexible material selection

Material can be carbon steel, manganese steel, ss304, 316L and 321; different material can also be used in parts, between the part contact with the raw material and the parts don’t contact with the raw material. Surface treatment for stainless steel can be sandblasting, wiredrawing, polishing, mirror polishing

2.Reliable driven unit

The driven unit and power is varied according to different raw material, starting method, and processing.
Double screw conical mixer is equipped with appropriative double output reducer, which combines pinwheel, gear and warm and gear.

3.Excellent discharging unit

Spherical valve or plum-blossom dislocation valve is matched to the double screw conical mixer.The surface of the valve match the track of the bottom of screw, to reduce the mixing dead zone to the maximum, and to make the largest discharging area, so as to make sure no leftover. Spherical valve has excellent sealing effect to powder, liquid and even in the negative pressure state.Plum-blossom dislocation valve is easy to operate and control the discharging speed

4.Powerful auxiliary components

Equipped with circulation medium of jacket, the double screw conical mixer can realize the temperature control in mixing process.
In the mixer barrel, the part contact with material can coat some antiriot, anti-caking and metal isolation material according to different ingredient. In some severe wear conditions, the screw surface can be overlaid by some wear proof alloy.
If a small quantity of liquid is required during mixing, spraying or atomizing unit is necessary in order to mix the liquid evenly with the main ingredient. The liquid-adding system is basically composed by the three parts: pressure source, liquid storage pot and spraying nozzles.


Standard Features:

  • Volume: 10-20000L
  • Stainless Steel or Carbon Steel
  • Screw agitator for center discharge
  • Designed for normal temperature and normal atmospheric pressure
  • Feed Nozzle
  • Dust Nozzle
  • Manually operated or Pneumatic operated dislocated valve
  • Packing Seal
  • Safety limit switch on man hole

Optional Features:

  • Carbon Steel, Stainless Steel 304, Stainless Steel 316L
  • Internal pressure
  • Sanitary type construction
  • Dislocated valve, butterfly valve, slide gate valve, ball valve
  • Horsepower to suit higher density materials
  • Explosion-proof motors
  • Controls such as variable frequency drives, motor starters and operator stations are available
  • Spray nozzles for liquid introduction
  • Jacket for heating or cooling

  0.01 0.015 0.02 0.03 0.05 0.1 0.15 0.2 0.3 0.5 0.8 1
Full volume 0.01 0.015 0.02 0.03 0.05 0.1 0.15 0.2 0.3 0.5 0.8 1
Productivity (t/h) 0.01-0.02 0.015-0.03 0.02-0.05 0.03-0.07 0.05-0.1 0.1-0.2 0.15-0.3 0.2-0.8 0.3-1 0.5-1.5 0.8-2 1.5-3
Loading coefficient 0.6
Msterial graininess ≥20
Mixing evenness Relation deviation<1.5
Total power(Kw) 0.37 0.37 0.55 0.55 0.75 1.5 1.5 2.2 3 3 4 4
Autorotation 100 100 100 100 100 143 143 143 143 143 57 57
Revolution 2
Working pressure micro-pressure
Out-from dimension 455 470 492 524 587 708 782 888 990 1156 1492 1600
Total height(H) 982 1006 1020 1168 1272 1498 1620 1875 2040 2314 2576 2736
Central distance of support(D1) 410 425 440 472 535 648 724 808 910 1076 1392 1500
Height harm support to beduct covert(H2) 122 122 135 135 135 150 150 180 180 180 275 275
Size of feed port(D3) Ф80 Ф80 Ф80 Ф80 Ф80 Ф140 Ф140 Ф140 Ф180 Ф200 Ф250 Ф300
Size of discharge port(D2) Ф100 Ф100 Ф110 Ф125 Ф125 Ф150 Ф150 Ф230 Ф230 Ф230 Ф300 Ф300
Bucket height(H1) 505 528 542 578 682 816 938 955 1120 1390 1572 1747
Aperture of support(d) Ф14 Ф14 Ф16 Ф16 Ф16 Ф18 Ф18 Ф18 Ф18 Ф18 Ф22 Ф22
Equipment weight(Kg) 100 110 120 130 150 210 250 500 550 600 900 1200


  1.5 2 2.5 3 4 5 6 8 10 12 15 20
Full volume 1.5 2 2.5 3 4 5 6 8 10 12 15 20
Productivity (t/h) 2-4.5 2.5-5 4.0-7 5-7.5 5-10 6-13 7.5-15 10-20 10-25 12-28 15-30 20-40
Loading coefficient 0.6
Msterial graininess ≥20
Mixing evenness Relation deviation<1.5
Total power(Kw) 5.5 5.5 7.5 7.5 11 15 15 18.5 18.5 22 22 30
Autorotation 57 57 57 57 57 57 57 57 57 57 57 57
Revolution 2
Working pressure micro-pressure
Out-from dimension 1780 1948 2062 2175 2435 2578 2715 2792 3000 3195 3438 3775
Total height(H) 3132 3400 3425 3605 4416 4660 4876 5350 5647 5987 6364 7144
Central distance of support(D1) 1680 1848 1962 2075 2325 2468 2605 2672 2860 3042 3276 3640
Height harm support to beduct covert(H2) 275 275 275 275 320 320 320 500 500 500 500 500
Size of feed port(D3) Ф300 Ф350 Ф350 Ф350 Ф400 Ф400 Ф400 Ф400 Ф500 Ф500 Ф500 Ф500
Size of discharge port(D2) Ф300 Ф300 Ф400 Ф400 Ф400 Ф400 Ф400 Ф450 Ф450 Ф450 Ф450 Ф560
Bucket height(H1) 2042 2316 2340 2522 2890 3125 3340 3707 4004 4310 4687 5060
Aperture of support(d) Ф22 Ф22 Ф22 Ф22 Ф26 Ф26 Ф26 Ф28 Ф28 Ф28 Ф28 Ф30
Equipment weight(Kg) 1350 1500 1800 2100 2500 3000 3500 3800 4300 4500 4900 5500

Accessory project

Configuration 1: conical mixer with vacuum feeder
Configuration 2: with cargo elevator, manually feeding
Configuration 3: conical mixer with screw conveyor feeder
Configuration 4: conical mixer with vacuum feeder
Configuration 5: with cargo elevator, manually feeding
Configuration 6: conical mixer with screw conveyor feeder
Configuration 7: simple production line with conical mixer, bucket elevator and auto-packing machine.
Configuration 8: multi-level platform, manually undoing the bag, vacuum feeding, storage and auto-packing
Configuration 9: platform for conical mixer, manually feeding, conveying mixed material to silo, and packing.


Matching parts

A、Mixing Effect

The standard double screws cone-shape mixer is equipped with two agitating augers, yet single(a long auger), double(two dissymmetrical augers with different length) or triple(three symmetrical screws with two long and one short) augers is adopted in fact according to the size of the device; theoretically, more angle augers there are, better the mixing effect is.

B、Cooling and heating

Cool or heat the materials through feeding the cold or hot medium into the jacket which is added to the outside of the cylinder of the mixer. Pump industrial water for cooling and steam or heat oil heated by electricity for heating.

C、Liquid-adding mixing

The mix of injecting liquid can be achieved by connecting the atomized spray nozzle with spray pipe which is inserted in the intermediate axle location of the mixer. With choosing the specific materials, the mix of powder and liquid can be conducted by injecting acid or alkali liquid.

D、Compression Resistance

The cover of the cylinder can be made as the shape of a dome, deceasing residue to clean easily while improving compressive strength of the mixer cylinder, which should be frequently used when pressure resistance cylinder is needed.

E、Negative Pressure Feeding

The cylinder of the mixer can be made as negative pressure chamber in specific process, which breathes the dry material with good fluidity in mixing chamber for mixing using soft pipe, without residue and pollution in the feeding segment.

F、Discharging Mode

The standard device typically uses plum flower-shaped “dislocation valve” that joints closely with the bottom of long screw to decrease mix dead angle effectively with two driving methods, manual and pneumatic. It can also use butterfly valve, ball valve, star-shape material discharging device, side discharge and so on according to the user’s requirements.