HP-DHK Series Double-Layer Preheating Kneader

The upper layer adopts tangent, different speed, radius dry material mixing and heating technology, mixing blade stirs materials while heating to make materials contact heat transmission surface of equipment directly to realize efficient heating.

The lower layer adopts intersectant synchronous mixing blade, overlying mixing technology from Japan. Mixing blades rotating range exceed the middle of tank which enlarge the actuating area; two mixing blades have the same spiral climbing direction but different rotating direction, one mixing blade pushes material to the middle and the other one pushes to both sides, material flows like “8” in the tank.

Introduce in the original mixing blade from Japan, the section of mixing blade is elliptic and it pushes material to move along with vertical direction of the elliptic section, squeezing action is intensified, material granules are fully mixed, mixing and kneading effect is strengthened. Elliptic section does not stick to material easily and the surface of mixing blades is free of materials.

It adopts double-layer preheater and mixer patent technology, double-heating & double-mixing carbon mixer technology, with dry material preheating on upper layer and carbon paste mixing on lower layer at the same time, productivity is improved by 80%.

We adopt efficient high temperature tank patent technology (customized configuration), overall heating patent technology, mixing blade heating patent technology (customized configuration), discharge gate heating technology, lining plate and tank body seamless fitting technology. Adopt integral heating mixing blade. Blades, hollow axis and other mixing parts contacting materials heat materials through heat transfer oil.

Rotating joint of heat transfer oil is installed with position sensor to monitor displacement of fixed housing of rotating joint and keep communication with central control system at real time. The machine will be stopped immediately and send alarm in case of abnormal conditions. Heat transfer oil inlet and outlet of rotating joint and metal tube are installed with pressure sensor to monitor tube pressure and communicate with central control system, to prompt system maintenance and alarm pipeline leakage in case of pressure changes.

Mixing blades adopt special design, position sensor monitors operation of mixing blade at real time and transmit running state of mixing blade to central control system. In case mixing blades are blocked by foreign matters, the machine will stop urgently and send alarms to avoid equipment damage.

Use special equipment to process inner diameter of tank and bearing hole of tank end plate, equipment machining precision is high and it guarantee gap requirement between mixing blade and tank and prevent particles from grinding during dry mixing and heating.

Pitch distribution device is mounted on cover to add pitch into the tank uniformly through multiple points, inclusion of dry material block in paste is avoided. The device is heated by heat transfer oil to avoid solidified pitch blocking the device.

Adopt new temperature measuring technology to improve temperature measuring performance of thermo-responsive and anti-interference.

Adopt combined overlapping metal ring to form multiple sealing to guarantee no carbon powder leakage from shaft end of mixing blade; Hydraulic rotary lock discharge gate has excellent airtightness, sealing surface of which will never worn out that airtightness is reliable with no material leakage from discharge gate.

Mixing blade pushes materials spirally to discharge material fast and completely from bottom open discharge gate in less than 2 min without residue left.

Mixing blade is surface-welded with wear-resistant layers, rigidity of which is up to HRC60-65, and service life of mixing blade is 20 years. New type wear-resistant manganese steel material is used as lining plates with high strength after thermal treatment. Service life of lining plates for anode production is 15 years and 1 year it is for cathode and carbon electrode production.

Mixing blade shaft adopts self-aligning roller bearing and double-direction thrust bearing design which overcomes axial force of mixing blade and prevents mixing blades from axial shifting and service life of bearing is longer. Bearing structure is fixed on one side and movable on the other side, which eliminates influence of thermal expansion and prevents mixing blade from seizing after it is heated by heat transfer oil.

It adopts full automatic lubrication system, lubrication interval and lasting time can be adjusted. Lubrication station has pressure sensor to monitor work state of main station of automatic lubrication system at real time, and to send alarm in case of abnormal conditions.

Each lubrication point has automatic reset pressure slide valve and position sensor monitoring work state of each lubrication point and automatically sending out system maintenance prompt and malfunction alarm.

It adopts hard teeth reduction gearbox and synchronous gearbox split structure with full lubrication and reliable operation. Hard teeth reduction gear, bearing capacity of which is 3 times of common one, together with gear coupling, guarantee high bearing capacity of transmission system. Hydraulic clutch can adjust transmitted torque according to the load to provide overload protection, and allow the machine to restart with load in case of some special conditions (such as restart after stopping during running).

It adopts double-layer preheater and mixer patent technology, the equipment has traction and sliding device to draw “upper tank” moving on “lower tank” to leave maintenance space for maintenance of lower layer. Tank end plate and tank adopt dual open structure, it is separated into upper and lower parts at the position of mixing blade axial line, together with fine machining and enclosed treatment, installation precision and tank airtightness are guaranteed.

It is machined by special equipment, to get good concentricity, making the operation smooth, service life long, and operation noise of the entire machine less than 80dB.

PLC control and internet communication is adopt to measure, display and transmit equipment running and status parameters at real time (optional configuration). Three kinds of operation mode—internet automatic, single machine automatic and manual—guarantee the machine itself can run automatically no matter if upstream and downstream machines are automatic.