Top Discharge Centrifuge
Filtration Equipment
1. Product Overview
The flat-bed top-discharge centrifuge is a vertical batch centrifuge that replaces the traditional three-column suspension with a flat-bed base; the cake is unloaded from above the bowl either manually or mechanically. The machine consists of a flat base, rotating bowl, casing, drive system and brake. It is widely used for suspension separation in the chemical, pharmaceutical and food industries. Key characteristics: stable structure, low center of gravity, smooth running, GMP compliance and easy access for thorough cleaning.
2. Working Principle
The suspension is fed from the top into the high-speed rotating bowl. Under centrifugal force, the filtrate passes through the screen and the perforated bowl wall into the casing and drains away, while the solids are retained inside the screen to form a filter cake. After washing and final spinning, the machine stops and the cake is removed from the top by hand or with a dedicated lifting tool.
3. Classification
by Discharge Method:
Manual top discharge: the operator shovels or hoists out the cake — small batches, products whose crystals must be handled gently
Bag-lifting top discharge: the filter bag is lifted out together with the cake, with no direct product contact — pharmaceutical and food-grade, high-purity products
Robotic top discharge: a pneumatic or electric manipulator removes the cake — less manual labor, suitable for batch production
4. Detailed Technical Parameters
4.1 Standard Materials
| Material | Typical Components/Media | Remarks |
|---|---|---|
| 304 Stainless Steel | Bowl, casing, flat base | General food grade |
| 316L Stainless Steel | Bowl and screen in product contact | First choice for pharmaceutical use, excellent corrosion resistance |
| Carbon Steel Q235B | Casing, base (no product contact) | Low cost, surface anti-corrosion required |
4.2 Typical Specifications
| Bowl Diameter | Effective Volume | Max Speed | Separation Factor | Installed Power |
|---|---|---|---|---|
| 800 | 90 | 1500 | 1000 | 5.5～7.5 |
| 1000 | 140 | 1200 | 800 | 7.5～11 |
| 1200 | 250 | 1000 | 670 | 11～15 |
| 1500 | 400 | 800 | 530 | 15～22 |
4.3 Design Conditions & Performance
| Parameter | Specification |
|---|---|
| Separation Factor | 530～1000 |
| Discharge Method | Top discharge (manual / bag-lifting / robotic arm) |
| Braking Method | Dynamic (energy-consuming) braking / mechanical braking |
| Filter Cake Moisture | 10%～35% (depending on the product) |
5. Electrical Parameters
| Region | Voltage | Frequency |
|---|---|---|
| China/Russia/Central Asia | 380V | 50Hz |
| Middle East/Southeast Asia/Africa | 400V / 415V | 50Hz |
| South Korea | 380V | 60Hz |
| Americas (if required) | 440V / 480V | 60Hz |
| Note: the voltage and frequency of the main motor must be specified; explosion-proof motors are required in hazardous areas. |
6. Key Component Selection
| Component | Brand/Material | Features & Applications |
|---|---|---|
| Rotating bowl | Custom-built | 304/316L, high strength, excellent dynamic balancing |
| Filter bag/screen | Custom-matched | Polyester/polypropylene/stainless steel woven mesh, prevents fines bypass |
| Vibration isolators | Domestic standard/custom | Rubber mounts/damping springs, absorb vibration |
| Inverter | ABB/Siemens/Inovance | Smooth start-up, easy speed adjustment |
7. Typical Applications
Pharmaceutical industry: separation of API crystals and intermediates
Food industry: dewatering of molasses, salt and MSG
Chemical industry: fine chemicals and dye separation
Light industry: dewatering of fibrous materials
8. Design Standards & Certifications
| Standard | Description |
|---|---|
| GB/T 13756-2012 | Technical conditions for three-column and flat-bed centrifuges |
| ISO 9001:2015 | Quality management system |
| GMP | Good Manufacturing Practice |
| CE / EAC / GOST-R | Available on request for international orders |
9. Optional Custom Configurations
| Option | Details |
|---|---|
| Discharge type | Manual shoveling / bag-lifting / robotic arm |
| Drive system | Belt drive / direct coupling |
| Sealing | Open / protective cover / nitrogen-inerted enclosure |
| Special design | Explosion-proof / VFD speed control / CIP cleaning |
10. Warranty Terms
| Equipment Status | Warranty Period | Warranty Scope |
|---|---|---|
| Brand new | 12 months | Bowl and main bearings, drive system, vibration isolation system |
| Refurbished | 6 months | Bowl and main bearings, drive system, vibration isolation system |
| Idle surplus | 3 months | Main functional components |
11. Packaging & Delivery
| Item | Packaging Method |
|---|---|
| Main body | Tarpaulin-wrapped, on a wooden skid |
| Motors / vibration isolators | Fully enclosed wooden cases |
| Electrical / instruments | Waterproof-sealed packaging inside wooden cases |
| Container capacity estimate (for reference only, subject to actual configuration): | |
| 800～1000 mm bowl: approx. 1 x 20'GP | |
| 1200～1500 mm bowl: approx. 1 x 40'OT or breakbulk shipment | |
| On-site installation and commissioning guidance available. |
12. Information Required for Inquiry
12. Information Required for Quotation: material name, solid-liquid ratio and particle size distribution; throughput; required cake moisture; preferred discharge method; preferred equipment condition (new/refurbished/idle); delivery terms (FOB/CIF/DDP); destination port.