1. Definition of Automatic Rolling Door Air Shower Chamber

Also known as rolling-type cargo air shower channel, it is a clean isolation equipment integrating rapid rolling doors, air shower purification system and interlock control system. After forklifts carry cargo into the chamber, the rolling door closes automatically. Loose dust on cargo surfaces is stripped by high-speed clean airflow inside the sealed cavity. The dual-door interlock mechanism prevents direct air exchange between clean and non-clean zones, realizing dual functions of dust removal and space isolation. Compared with traditional swing-door air shower chambers, rolling doors retract upward and do not require extra space for door swing. Door opening dimensions can be customized to accommodate continuous passage of forklifts and full-pallet large cargo.

2. Complete Structural Composition

1. Rapid Automatic Rolling Door PVC rapid rolling doors are installed at the inlet and outlet. Anti-static or heavy-duty reinforced versions are available on demand. The door lifts and drops responsively. It is equipped with safety bottom edge and infrared anti-pinch protection, and rebounds automatically when encountering obstacles to guarantee forklift passage safety. The door fits tightly against the doorway after closing to ensure cavity tightness.

2. Main Chamber Body The chamber can be made of cold-rolled steel with powder coating, 201 stainless steel or 304 stainless steel. 316 stainless steel is selected for high-corrosion or GMP projects. The inner wall is smooth and flat to avoid dust accumulation and facilitate daily wiping and cleaning. A return air plenum channel is set at the bottom for air circulation.

3. Air Shower Purification Unit Consists of fans, pre-filters, HEPA filters and adjustable stainless steel nozzles. The fan provides air pressure. Air first passes through the pre-filter to trap large impurities, then the HEPA filter removes fine suspended particles. High-speed clean airflow is ejected from multi-angle nozzles to purge the surfaces of cargo and pallets.

4. Electrical & PLC Control System Equipped with a PLC programmable controller. Its core function is dual-door interlock: the two doors cannot open at the same time. It integrates air shower timing, acousto-optic prompts and fault alarms. Geomagnetic coils or infrared radar sensors can be matched to automatically detect cargo entry and exit for automatic start-stop and reduce manual operation.

5. Optional Accessories Differential pressure gauge (to monitor HEPA filter resistance), PAO leak test port, cavity disinfection module, data storage module, explosion-proof assembly, etc. These options meet verification requirements for high-standard projects such as GMP.

3. Core Functions

1. Surface Dust Removal to Strip Particles Attached to Cargo Dust and fibers on cargo outer packaging and pallets are separated from the object surface under the impact of high-speed clean airflow. The stripped dust flows into the bottom return air system and is captured by filters, reducing contaminants brought into the clean workshop. Note: Air shower only removes loosely attached particulates and cannot kill microorganisms. A disinfection module needs to be added separately for microbial control requirements.

2. Dual-door Interlock Isolation to Block Cross-Zone Air Convection Interlock is the foundation of pollution prevention. When either rolling door is open, the other remains locked to avoid direct connection between the two zones. Rapid closing of rolling doors shortens the doorway opening time, reduces the risk of backflow of non-clean air, maintains stable workshop pressure difference and minimizes cross-contamination.

3. Automated Passage to Improve Logistics Transfer Efficiency Geomagnetic / infrared sensors automatically identify forklifts and cargo. Rolling doors open and close automatically without manual operation. It is suitable for production workshops with high material turnover frequency and improves the turnover efficiency of large cargo.

4. Maintain an Independent Purified Cavity Space The chamber forms a sealed independent purification space. Airflow circulates and filters during blowing, reducing suspended dust accumulation inside the cavity and avoiding secondary dust emission the moment the door opens.

4. Application Scenarios

1. Lithium battery & photovoltaic workshops: Transfer channels for large pallet materials including raw materials, electrode sheets and silicon wafers to control dust and static pollution. Anti-static rolling doors are optional.

2. Pharmaceutical & medical device GMP workshops: Cross-zone transfer of raw materials and outer packaging materials. The equipment can be equipped with PAO leak test and operation recording functions to meet verification requirements.

3. Food & cosmetic clean workshops: Logistics passages for raw materials and turnover boxes. Stainless steel chamber is preferred for easy washing and cleaning.

4. Electronic manufacturing workshops: Access of large components and full-pallet materials into clean zones to control fiber and dust contamination.

Not applicable scenarios: Personnel passage (ordinary air shower room for personnel purification); transfer of tiny goods with low turnover frequency, where standard pass boxes or small cargo air showers are recommended.

5. Brief Selection Tips

1. Determine doorway width, height and cavity depth according to the maximum overall dimension of forklift plus cargo, and reserve sufficient blowing distance.

2. Select chamber plate material and rolling door type based on workshop environment. Stainless steel is used in humid and corrosive environments; anti-static rolling doors are selected for static-sensitive scenarios.

3. For projects requiring GMP verification, confirm supporting configurations such as filter leak test and data recording in advance.

4. Evaluate passage frequency. Reinforced fans and heavy-duty rolling doors are adopted for high-frequency continuous operation to lower failure rate.

Conclusion

The automatic rolling door air shower chamber is a special dust removal and isolation equipment for large cargo logistics in clean workshops. Supported by coordinated rapid rolling doors, air shower purification system and interlock control system, it realizes cargo surface dust removal during forklift pallet transfer, isolates clean and non-clean zones, and reduces cross-contamination risks caused by material-introduced pollutants. During selection, comprehensive consideration shall be taken combining cargo size, industrial clean specifications and passage frequency to match the workshop clean control objectives.