Reliable Washing and Air-Knife Drying for Flat Glass
The SZ-W25 horizontal glass washing and drying machine is engineered for efficient, continuous cleaning of large flat glass sheets.
A gear-driven roller conveyor transports the glass through the pre-spray, brush-washing and air-drying sections. Conveyor speed is controlled by an inverter and can be adjusted from 0 to 14 m/min according to the glass dimensions, surface condition and required drying result.
The machine combines powerful washing performance, effective air-knife drying and straightforward operation, making it suitable for glass factories processing different glass types, thicknesses and order sizes.
Three Pairs of Independently Driven Brushes
The washing section is equipped with three pairs of brush rollers. The upper and lower brush groups are driven independently by two motor groups, providing stable brush rotation and consistent contact with the glass surfaces.
Water is continuously sprayed onto the glass during brush washing to remove dust, glass powder, oil residue and other contaminants remaining from previous processing operations.
The standard water-heating system supports stable washing performance under different ambient and production conditions.
Suitable for Online and Offline Low-E Glass
The SZ-W25 can be configured for float glass, coated glass and both online and offline Low-E glass.
The upper brush arrangement consists of two hard brushes and one soft brush. When Low-E glass is processed, the two upper hard brushes are pneumatically lifted so that the soft brush cleans the upward-facing coated surface.
This arrangement reduces unnecessary contact with sensitive coatings while retaining effective cleaning of the uncoated glass surface.
Independent Infeed Pre-Spray System
Before entering the main brush-washing section, the glass passes through an independent pre-spray system.
The pre-spray section has its own water tank and circulation system. It removes loose particles and surface contamination before the glass reaches the main brushes, helping improve washing efficiency and reduce the transfer of contaminants into the main washing section.
Two Pairs of Air Knives
After washing, the glass enters the drying section, where two pairs of blower-fed air knives remove residual water from the glass surfaces.
A frequency-controlled centrifugal blower allows the air volume to be adjusted according to glass thickness, conveying speed and drying requirements. The standard heated-air system further improves drying performance, particularly at higher production speeds or under low-temperature conditions.
The drying process uses high-velocity airflow rather than physical contact, helping the glass leave the machine clean and dry for subsequent processing.
Siemens PLC and Touchscreen Control
The SZ-W25 uses a Siemens PLC with a touchscreen interface for machine operation and process monitoring.
Operators can manage the conveying speed, washing system, blower and other operating functions through a clear, centralized interface. Different processing settings can be selected according to the glass type and production requirements.
Corrosion-Resistant Wet Zone
All machine components in contact with water are made of stainless steel or other corrosion-resistant materials.
This construction helps protect the washing section from corrosion, simplifies daily cleaning and supports reliable operation in continuous glass-processing environments.
Convenient Maintenance Access
The complete upper washing and drying structure can be raised by 350 mm.
This provides convenient access to the brush rollers, air knives, conveying rollers and internal washing area for cleaning, inspection and routine maintenance.
Main Features and Advantages
- Automatic horizontal glass washing and drying
- Maximum processing width of 2500 mm
- Adjustable conveying speed from 0 to 14 m/min
- Three pairs of brush rollers
- Two independently driven brush groups
- Two pneumatically liftable upper hard brushes
- Soft-brush cleaning for Low-E coated surfaces
- Suitable for online and offline Low-E glass
- Independent infeed pre-spray tank and circulation system
- Standard wash-water heating system
- Two pairs of blower-fed air knives
- Standard heated-air drying
- Frequency-controlled centrifugal blower
- Siemens PLC with touchscreen
- Stainless-steel and corrosion-resistant wet-zone components
- 350 mm upper-structure lifting for maintenance
- Customizable electrical supply
How the Glass Washing Machine Works
1. Glass Infeed
The glass is placed on the horizontal roller conveyor and automatically transported into the machine.
2. Pre-Spray
The independent infeed pre-spray system removes loose dust, glass powder and other surface particles before the glass enters the main washing section.
3. Brush Washing
Three pairs of rotating brush rollers wash the upper and lower surfaces of the glass while heated process water is sprayed onto the glass.
4. Low-E Glass Processing
For Low-E glass, the coated surface faces upward. The upper hard brushes are pneumatically lifted, allowing the soft brush to clean the coated surface.
5. Air-Knife Drying
Two pairs of air knives use high-velocity heated airflow to remove residual water from both glass surfaces.
6. Glass Outfeed
The clean and dry glass leaves the machine ready for inspection or subsequent processing.
Applications
The SZ-W25 horizontal glass washer is suitable for:
- Float glass
- Architectural glass
- Online Low-E glass
- Offline Low-E glass
- Coated and reflective glass
- Glass after edging, grinding or drilling
- Glass before tempering or toughening
- Glass before laminated glass assembly
- Glass for insulating glass production
- Furniture and interior glass
- Other horizontal flat glass processing lines
Technical Specifications
| Item | Specification |
|---|---|
| Model | SZ-W25 |
| Machine Type | Horizontal Glass Washing and Drying Machine |
| Maximum Processing Width | 2500 mm |
| Minimum Glass Size | 400 × 400 mm |
| Glass Thickness Range | 3–25 mm |
| Conveyor Speed | 0–14 m/min |
| Brush Rollers | 3 pairs |
| Air Knives | 2 pairs |
| Water Heating | Standard |
| Air Heating | Standard |
| Blower Speed Control | Frequency controlled |
| Control System | Siemens PLC with touchscreen |
| Upper Structure Lifting Height | 350 mm |
| Working Height | 950 ±10 mm |
| Compressed Air Requirement | 0.8 MPa |
| Installed Power | 41 kW, including water and air heating |
| Power Supply | Customizable |
| Approximate Machine Weight | 4100 kg |
| Overall Dimensions (L × W × H) | 5550 × 3600 × 2850 mm |
Effective processing speed depends on glass dimensions, surface contamination and drying requirements.
FAQ
1. What is the SZ-W25 horizontal glass washing machine used for?
The SZ-W25 is designed to wash and dry flat glass before subsequent processing. It can be used independently or integrated into tempering, laminating, insulating glass and other horizontal glass-processing lines.
2. What is the maximum glass width?
The maximum processing width is 2500 mm.
3. What glass thicknesses can the machine process?
The machine processes glass from 3 to 25 mm thick.
4. Can the machine wash Low-E glass?
Yes. It is suitable for both online and offline Low-E glass. When processing Low-E glass, the coated surface faces upward, the upper hard brushes are lifted, and the soft brush cleans the coated surface.
5. How is the glass dried?
Two pairs of air knives use high-velocity airflow supplied by a centrifugal blower to remove residual water from the glass surfaces. Heated-air drying is included as standard.
6. Is the blower speed adjustable?
Yes. The centrifugal blower is frequency controlled, allowing the airflow to be adjusted according to the glass and processing requirements.
7. Are water and air heating included?
Yes. Wash-water heating and heated-air drying are standard configurations. Their power consumption is included in the machine’s 41 kW installed power.
8. What is the maximum washing speed?
The adjustable conveying-speed range is 0–14 m/min. The appropriate production speed depends on glass size, surface condition and required drying quality.
9. Which control system is used?
The machine is equipped with a Siemens PLC and touchscreen.
10. Is the machine easy to maintain?
Yes. The complete upper washing and drying structure can be raised by 350 mm, providing convenient access to the brushes, air knives and internal washing area.
11. Are the water-contact components corrosion resistant?
Yes. All components in contact with water are made of stainless steel or other corrosion-resistant materials.
12. Can the voltage be customized?
Yes. The electrical supply can be configured according to the customer’s local voltage and frequency.
Call to Action
Configure the Right Horizontal Glass Washer for Your Production Line
Tell us your maximum glass width, glass thickness range, glass type, required production speed, voltage and line configuration. We will recommend the appropriate SZ-W25 configuration and provide a technical proposal and quotation.
Contact Sagertec for product details, line integration and pricing.
