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Help CenterLow-noise Screw Air Compressor for Precast Yard Formwork Cleaning
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Product Introduction
Blowing down formwork sits inside a working yard where people are close by, and a bare compressor at full noise makes that unpleasant and, in some jurisdictions, non-compliant. This unit puts the screw airend inside a sound-attenuated enclosure, so it can be sited near the casting beds. Air output is steady on a 380 V three-phase supply, and load and unload control matches output to the blow gun.
Product Parameters
| Parameter | Value |
|---|---|
| Type | Screw air compressor |
| Enclosure | Sound-attenuated steel canopy |
| Power supply | Electric, 380 V three-phase |
| Control | Automatic load and unload |
| Air delivery | Set by model, confirmed at order |
| Working pressure | Set by model, confirmed at order |
| Siting | Near casting beds and work areas |
| Application | Formwork, mould and surface cleaning |
Product Description
The airend and motor sit inside a lined steel canopy with the cooling air routed to keep noise in and heat out. Because the unit can be sited close to the beds, the hose run is short and pressure at the blow gun stays up. Load and unload control keeps the motor from running flat out when the gun is closed, and the direct-coupled drive removes belt maintenance.
Typical Applications
Formwork and mould blow-down between casts
Cleaning casting beds before reinforcement placement
Blowing dust from anchor pockets and ducts
Workshop cleaning in precast plants
Air supply in yards close to residential areas
Product Advantages
Quiet enough for a working yard — lined canopy allows siting near the beds.
Short hose runs — close siting keeps pressure at the gun.
Steady output — load and unload control under intermittent use.
No belt maintenance — direct-coupled drive.
Few wearing parts — screw airend without valves or rings.
Standard site power — 380 V three-phase.
Factory Strength
Units are assembled and noise-tested before dispatch, with delivery and pressure verified on a load rig. Quality inspectors check canopy lining, electrical protection and control function, and units ship with inspection records and bilingual export documents. Filters, separators and airend parts are held as spares, and engineers advise on siting and hose sizing.
Company Profile
Henan Jinhuaiyu Machinery & Equipment Co., Ltd. is a manufacturer based in Zhengzhou, Henan, China, established in 2025, operating from a factory of 1,000–3,000 square meters with 51–100 employees. The company builds intelligent prestressing equipment, reinforcement transport vehicles, concrete pumping and placing machinery and supporting components for precast bridge yards, and holds product certifications registered on its storefront. Annual export value is below US$1 million, with shipments through Tianjin, Shanghai and Qingdao to buyers in Southeast Asia, Africa, the Middle East, South America, Eastern Europe and other regions. Customized manufacturing and OEM/ODM service are available, and the company has supplied prestressing equipment to China Railway construction projects domestically.
FAQ
How quiet is the unit?
The enclosure is sound-attenuated; the measured figure is confirmed at order. The figure is measured at the operator position, not at the intake.
Can it be sited beside the casting beds?
Yes, which is the reason for the lined canopy. Lining is what absorbs noise inside the canopy.
What pressure does it deliver?
The working pressure is set by the model chosen, confirmed at order. The model is chosen on the tool, not on the tank.
Is a receiver needed?
A receiver smooths the blow-gun demand; sizing is advised against usage. A receiver is what stops the blow gun pulsing.
What power supply is required?
380 V three-phase. The supply is sized for the motor at order.
Does it need a dryer for formwork cleaning?
Not usually, though a dryer is advised where moisture would affect the form surface. Moisture on a form surface shows up in the finished concrete.
What maintenance is needed?
Air and oil filter service at the intervals in the manual. Intervals are counted in running hours.
Can it run all shift?
The cooling and drive are sized for continuous duty. That is what allows it to run through a cleaning shift.
What spares should be stocked?
Air filter, oil filter and separator element. Elements are changed as a set at the service interval. ---
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