Horizontal Kneader with Bottom Discharge
Direct discharge through bottom gate valve with minimal residue and high efficiency
The horizontal bottom-discharge kneader is equipped with a hydraulically driven gate valve at the bottom of the vessel. After kneading, material is discharged directly by gravity and blade pushing. Bottom discharge leaves minimal residue and offers fast unloading, ideal for high-volume production lines demanding efficiency and cleanliness.
How it Works
During kneading the bottom gate is sealed by a hydraulic locking mechanism, ensuring stable vacuum and heating conditions. At discharge, the hydraulic system opens the gate while the blades keep rotating at low speed, pushing material toward the bottom outlet. Material falls vertically into the receiving device below, with residue controlled within 1%.
Features at a Glance
Hydraulic discharge gate
The bottom gate seals reliably under vacuum and high temperature, with fast open/close.
Low residue
Gravity discharge with blade pushing keeps residue below 1%, minimizing material loss.
Production-line ready
Can be integrated with extrusion, pelletizing and packaging lines for continuous production.
Vacuum and heating
Supports vacuum deaeration and thermal-oil/steam heating for reactive formulations.
Technical Specifications
| Working capacity | 300L – 6000L |
|---|---|
| Blade type | Z 型 / Σ型 (Z-type / Sigma-type) |
| Agitator speed | 0 – 40 rpm（变频可调） |
| Motor power | 15 – 160 kW |
| Vacuum rating | -0.098 MPa |
| Discharge gate size | 按机型定制（custom per model） |
| Contact material | 304 / 316L 不锈钢 |
| Heating | 导热油 / 蒸汽 / 电加热（可选） |
Frequently Asked Questions
It suits pasty and slurry materials with reasonable flow, such as silicone sealant, masterbatch premix, battery slurry and chemical intermediates. For extremely viscous and sticky materials, screw discharge or hydraulic tilting types are recommended.
The gate uses hydraulic locking plus a high-temperature FKM seal ring for double sealing, maintaining a stable -0.098 MPa vacuum without leakage during kneading.
A kneader is a mixing machine for high-viscosity materials. Two Z-type (or sigma-type) blades rotate in opposite directions inside the vessel, producing shear, folding and squeezing on the material for uniform kneading. It is widely used for silicone sealant, hot-melt adhesive, butyl rubber and battery slurry.
Vertical kneaders have a vertical vessel with blades entering from above - compact, space-saving, suitable for small-medium batches and frequent changeover. Horizontal kneaders have a horizontal vessel with larger batch capacity, suitable for medium-large production. The choice depends on batch size, workshop space and discharge method.
Kneaders handle pasty materials from 10,000 cP up to several million cP - the range that dispersers and mixers cannot cover. The upper limit depends on blade type, motor configuration and material properties.
The three cover different viscosity ranges. High-speed dispersers handle low-to-medium viscosity slurries below 10,000 cP through high-speed shear; planetary mixers use revolution plus rotation for pastes from tens of thousands to hundreds of thousands cP; kneaders are dedicated to materials above 100,000 cP, including semi-dry compounds, using folding and squeezing action - a common choice for sealants, hot-melt adhesives and battery slurry.
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