Spiral Nozzle: What You Need To Know

In modern industrial spray systems, the performance of nozzles often determines the efficiency and stability of the entire process. Among various types of nozzles, helical nozzles are increasingly being adopted across many industries due to their unique structural design and excellent atomization performance. Whether it's chemical cooling, waste gas treatment, fire protection systems, or coating processes, helical nozzles demonstrate exceptional application value.

What Is Spiral Nozzle

The spiral nozzle is a high-performance spray nozzle with no internal impeller, utilizing multi-stage conical cutting of fluid for atomization. Its unique spiral channel design splits the liquid into continuous liquid films during high-speed flow and disperses them layer by layer on multiple spiral surfaces to form fine mist droplets, achieving efficient atomization and low blockage rates. Compared to traditional nozzles, spiral nozzles maintain excellent atomization performance even under low pressure and allow for some impurities in the medium, making them widely applicable in industrial settings such as flue gas washing, cooling and dust removal, desulfurization, firefighting, and liquid spraying.

Spiral Spray Nozzle Design

The core design of the spiral nozzle lies in its open spiral channel structure. The liquid flows along a spiral path, continuously breaking up into different layers of conical atomization zones, typically consisting of three layers: primary cone, intermediate cone, and end cone. This structure allows the nozzle to maintain high flow rates while achieving efficient atomization without an external air source. 

Spray angle: customizable from 60° to 170°, commonly used angles are 90°, 120°, and 150°. Nozzle size: ranging from 1/4 inch to over 2 inches, suitable for various piping systems. 

Operating pressure: typically between 1 and 7 bar, with custom high-pressure options available for special applications. 

Material options: including 316 stainless steel, PVDF, PP, silicon carbide, and ceramic, to handle corrosive or high-temperature environments. This 'no internal obstruction' design significantly reduces clogging risks, making it ideal for spraying liquids containing solid suspensions.

Spiral Nozzle Spray Pattern

Spiral nozzles primarily produce two typical spray patterns: solid cone and hollow cone. Their spray pattern characteristics are as follows:

Solid Cone: Liquid droplets are evenly distributed throughout the conical area, suitable for comprehensive coverage applications such as cooling, washing, and desulfurization.

Hollow Cone: The liquid is mainly concentrated at the edge of the ring, with no droplets in the center, ideal for edge impact and gas absorption scenarios.

Multi-layer Spiral: Achieves a composite spray trajectory through multi-stage spiral cutting, enhancing atomization efficiency and coverage.

High-density Coverage: Even under low-pressure conditions, it maintains uniform distribution of liquid droplets, reducing dead spots or insufficient spraying.

Users can choose different spray patterns based on their spray requirements to achieve optimal atomization effects and liquid utilization.

Spiral Nozzle Types

Based on structural form and spray pattern differences, spiral nozzles have developed various models to meet different application needs. Here are the main types:

1. Standard Spiral Nozzle

The most common form, suitable for a wide range of industrial applications.

Available in multiple angles and flow specifications.

Primarily produces solid cone sprays, with some models customizable for hollow cone patterns.

2. Spiral Full Cone Spray Nozzle

Designed for high-density full coverage spraying.

Used in cooling tower sprinkling, liquid distribution inside absorption towers, scrubbers, etc.

Provides uniform atomization and large coverage area.

3. Hollow Cone Spiral Spray Nozzle

Liquid is concentrated at the outer edge of the ring.

Especially suitable for edge impact cooling, gas absorption processes, etc.

Commonly used in environmental engineering and chemical waste gas treatment.

4. Spiral Cone Nozzle

Structurally optimized for precise angle control.

Often used in rotating platforms, elevated spraying equipment.

Offers various angle and flow rate combinations.

5. Spiral Cone Atomization Nozzle

Designed specifically for ultra-fine droplet atomization.

Used in spraying systems, odor control systems, fine particle capture areas, etc.

Supports operation under higher pressure conditions, enhancing atomization levels.

Conclusion

Spiral nozzles, with their clog-free design, efficient atomization, and multi-angle spraying capabilities, have become essential components in industrial spray systems. However, different industries have varying requirements for nozzle flow rate, angle, corrosion resistance, and other factors. Only by thoroughly understanding their technical characteristics can one truly maximize spray efficiency and optimize operational costs.

Choose Xinhou Nozzles

Xinhou specializes in the research and development of various nozzles and custom solutions. With extensive industry experience and stringent quality control, we have provided high-performance nozzle products and technical support to numerous global customers. If you are looking for high-quality, durable, and versatile spiral nozzles, contact Xinhou now, and let us offer you professional selection advice and fast delivery services.

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