PZ Series: Modular Dry-Mix Spraying Shotcrete Machine with Quick Maintenance

PZ Series: Modular Dry-Mix Spraying Shotcrete Machine with Quick Maintenance

Product Description

PZ Series Small Dry-Mix Shotcreting Machine​ is a compact and flexible dry-mix spraying equipment. Based on its miniaturized and modular design philosophy, it performs excellently in shotcreting operations for tunnels, roadways, slope support, geological disaster mitigation, and other engineering applications. It is not only suitable for large-area initial and secondary spraying but also indispensable in narrow or complex working environments due to its small and agile characteristics—such as in small cross-section tunnels, foundation pit support, local repair, grouting, and filling operations.

This product series adopts a classic and proven rotor-type structure, ensuring stable and reliable operation. It guarantees continuous, uniform, and pulse-free stable conveyance of powdered or granular materials (such as cement, dry-mix mortar, etc.). Inside the equipment, the materials are fully fluidized and mixed with compressed air, forming a high-speed and uniform material-air flow that is accurately and efficiently sprayed onto the working surface, ultimately creating a high-strength support layer.

Product Parameter

Item	Unit	PZ-3	PZ-6	PZ-6F	PZ-7
Capacity	m³/h	3	6	6.5	7
Concrete mix ratio	C/A	1:4-5	1:4-5	1:4-5	1:4-5
Conveying distance	m	150/50	150/50	150/50	150/50
Aggregate size	mm	20	20	20	20
Inner diameter of conveying pipe	mm	51	51	51	57
Working air pressure	MPA	0.2-0.4	0.4-0.6	0.4-0.6	0.4-0.6
Electric air consumption	m³ /min	5	7-8	7-8	8-10
Pneumatic air consumption	m³ /min	9-11	12-14	12-14	15-16
Feeding height	m	0.9	1.1	1.1	1.1
Motor power	KW	3	5.5	7.5	7.5
Dimensions	m	1.13*0.45*1.02	1.25*0.78*1.17	1.35*0.78*1.17	1400*800*1300
Machine weight	KG	430	700	750	850

Product Advantages

1. ​Excellent applicability: The extremely compact body design and flexible mobility allow it to easily access spaces unreachable by larger equipment, such as narrow tunnels, underground chambers, and complex building interiors, enabling comprehensive and dead-angle-free construction.
2. High operational efficiency: Equipped with an efficient conveying mechanism and an optimized spray gun system, it significantly improves spraying efficiency while effectively reducing rebound rates through advanced mixing technology, saving material costs.
3. ​Ease of maintenance: Designed with a modular approach, key components such as the rotor, lining plate, and discharge elbow feature quick-disassembly structures, making daily maintenance, cleaning, and replacement of wear parts extremely convenient, minimizing equipment downtime.
4. ​Reliable stability: Key components are manufactured from high-strength wear-resistant materials, ensuring durability and the ability to withstand harsh construction environments and continuous operation, guaranteeing progress and quality.
5. ​Versatile functionality: By adjusting material mixtures and air pressure, a single unit can perform multiple tasks such as concrete spraying, grouting consolidation, and crack repair, offering diverse functionality and a high return on investment.

Summary

The PZ Series Small Dry-Mix Shotcreting Machine is an ideal choice for shotcreting operations in mining, water conservancy and hydropower, subway tunnels, highway and railway slopes, defense engineering, and building reinforcement. It is a high-quality solution for users seeking construction efficiency, economy, and reliability.