The double spiral cone mixer is an efficient mixing equipment. The double spiral cone mixer has wide adaptability to mixed materials and has the following characteristics:

Suitable for materials with large specific gravity and large powder particles.

The mixing process of ceramic glaze is mild, and the material particles will not be pressed or broken.

It will not overheat the heat-sensitive materials.

In the process of powder mixing, it is very convenient to add liquid required by working conditions or set up one or more spray nozzle devices.

The bottom dislocation valve is convenient to discharge, and there is no fixed device at the bottom of the screw, so there will be no pressure feedback phenomenon.

Structural composition

Double-helix conical mixer belongs to container fixed mixer, which is mainly composed of transmission system, two inclined screws, rotating arm, cylinder and discharge valve. The specific structural features are as follows:

Transmission system: there is the rotation motion of the spiral shaft and its revolution motion along the cylinder wall with the rotating arm. Revolution and rotation are driven separately, and both parts adopt a fixed cycloidal pin-wheel reducer with large speed ratio and high efficiency, which is transmitted to the two rotating arms through distribution and commutation of bevel gears.

Cylinder: It is made into an inverted cone shape, so that the material can circulate alternately under the lifting action of the screw, so the container must have an appropriate cone angle.

Rotating arm, central rod and auger: the auger is composed of screw and spiral piece, which is the direct working part of mixed materials. In order to ensure the rigidity of the screw, reduce the weight and facilitate the welding of the spiral piece, 20 steel pipes are used in the design of the screw. Spiral blades are welded in the right direction with a certain diameter and pitch. The upper end of the screw is connected with the cross arm, and the lower end is connected with the central pull rod, and the two sides are symmetrical. This connection form of triangular symmetrical stressed members is balanced and improves the stress state of the members. The lower end of the screw can be independent of the container by the tension of the central pull rod, and there is no need to set a fixed bottom supporting structure at the bottom of the equipment.

Discharge valve: the bottom bearing is cancelled at the bottom of the equipment, which is beneficial to discharge. This machine is designed with a discharge valve consisting of two perforated plates. The valve is simple in structure, does not occupy space, the size of the discharge hole can be controlled at will, the operation is simple, the material can be completely discharged, and it can be easily disassembled and washed, which is beneficial to cleaning and maintaining the equipment.

principle of operation

The working principle of double helix cone mixer is to use two asymmetric screws to push the material upward at high speed, forming two asymmetric material flows along the cylinder wall from bottom to top. With the revolution of the screw, the materials outside the screw enter the envelope of the screw column to varying degrees, some materials are lifted due to dislocation, while others are thrown out of the stud. In this way, the material is constantly updated and diffused in the whole circumferential direction. When the two materials are lifted to the upper part, they will converge at the central groove to form a downward material flow, thus filling the hole at the bottom and forming a convection cycle. These actions are repeated, and the materials are evenly mixed in a short time, reaching a high degree of mixing.

major advantage

The mixing time is short, the efficiency is high, and the efficiency can be improved by 2-3 times.

The mixing capacity is large, and the charging coefficient is 20.30% higher than that of drum type and 25.40% higher than that of V type mixer.

The mixing accuracy is high, and the energy consumption is low, which can be reduced by about half (referring to the material per unit weight).

The shell is low in height and occupies a small area.

The bottom discharge is fast, the discharge is clean and neat, and the bottom can be tightly closed without material leakage.

The mixing dead angle of materials can be reduced to a minimum.

The equipment is easy to clean and change the variety of mixed materials.

Avoid the work of repairing the bottom bearing of the equipment.

Conducive to the development of large-scale equipment.

Application industry

Double-helix conical mixer is widely used in medicine, chemical industry, food, building materials, dyes, pesticides, metallurgy, petroleum, glass, gelatin, battery raw materials, coatings, feed, additives, refractories, new materials, electronic plastics, rubber, ceramics, fertilizers, mines, dry powder mortar, special building materials and other industries, and is suitable for mixing powdery, granular and liquid materials.