Pneumatics & Hydraulics


Choosing a pneumatic knocker

February 2024 Pneumatics & Hydraulics

Pneumatic knockers are a valuable tool in minimising buildup of materials and preventing disruptions in material flow in silos, rotary dryers, coolers, granulators and coating drums. This helps plant managers improve production efficiency and product quality. A pneumatic knocker achieves its high rate of impact power through spontaneously released energy stored in the form of compressed air.

singold produces and sells the world’s most powerful pneumatic knocker. This makes it suitable for massive, heavy-duty containers. For example, it is used in the mining industry for large silos and discharge chutes, in the building materials industry for gravel bunker outlets, in the chemical industry for mixing plants, in the lime industry for silos with a capacity of over 200 tons, and in the fertiliser industry.

Application temperature is crucial

The most important factor in selecting the optimum knocker is the application temperature. For temperatures up to 60°C, a standard version with a plastic piston can be used. For applications above 60°C, the piston is made of aluminium. The cover and anchor plate, tube and striker are made of aluminium, steel or stainless steel, depending on the application. The pneumatic knocker can even be used with wall temperatures of over 140°C. A T-shaped welding plate to increase the distance to the hot wall, a heat-dissipating plate, and a heat insulation plate are available as accessories in this case.

Steel or stainless steel for special challenges

Even if the application temperature is below 60°C, steel knocker models may still be the most suitable due to their resistance and durability. This applies to working areas with aggressive types of dust or vapours, such as the fertiliser industry. For plants with increased hygiene requirements, singold produces knockers in which all external parts are made of stainless steel.

singold offers pneumatic knockers in six sizes. The right size depends on the thickness of the silo wall. The company’s range covers wall thicknesses from 1 to 25 mm. The number of knockers and the points on the silo where they are to be ideally installed should be assessed individually. For example, it is recommended that rectangular containers have at least two knockers. They are attached to the two flatter sides, and operate interchangeably.

The pneumatic knocker is effective in a multitude of applications, and is available in different materials and designs with a temperature resistance of up to 140°C. For slowly rotating drums, hot walls, and filling or emptying stations with changing containers, singold has available a variant of the pneumatic knocker, the QJ distance knocker.


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Precision and durability in metal manufacturing and injection moulding
Parker Hannifin - Sales Company South Africa Pneumatics & Hydraulics
From 800 bar hydraulic circuits in metal presses to low-pressure cooling systems in injection moulding machines, Parker Hannifin’s fluid connector systems are engineered for the contrasting demands of high-pressure sealing, thermal resistance and rapid serviceability.

Read more...
BMG expands fluid technology portfolio with Boston by Danfoss industrial hose
Bearing Man Group t/a BMG Pneumatics & Hydraulics
BMG has added the Boston by Danfoss Industrial Hose range to its fluid technology portfolio, giving customers a single source for both hydraulic and industrial hose requirements across Africa.

Read more...
Pneumatic solutions for versatility, operational safety and efficiency
Pneumatics & Hydraulics
As an authorised partner of Festo, BMG combines access to globally recognised pneumatic technologies with local application expertise and technical support.

Read more...
Turning compressed air into a strategic energy advantage
Pneumatics & Hydraulics
Compressed air accounts for up to 80% of a system’s lifecycle costs, yet often remains overlooked in energy strategies. CompAir’s Energy Check provides a data-driven analysis of the complete compressed air network to identify energy savings of 20 to 30% or more.

Read more...
Air compressor secures premium meat company’s legacy
Pneumatics & Hydraulics
A tailored ELGi compressed air solution from Integrated Air Solutions is helping Tulisa Meat Market protect six decades of quality and consistency in its premium meat production.

Read more...
How laser cladding delivers 33% more life and maximum ROI in hydraulic cylinders
Pneumatics & Hydraulics
By utilising advanced laser cladding, Honingcraft can help clients achieve a 33% longer life from their components, ensuring they secure the maximum return on their investment.

Read more...
Identifying signs of hydraulic cylinder wear and tear
CT Hydraulics (Nqoba) Pneumatics & Hydraulics
Recognising the early warning signs of hydraulic cylinder degradation is crucial for preventing costly downtime, ensuring operator safety and maximising the lifespan of your hydraulic systems.

Read more...
Integrated Air Solutions opens Pinetown branch
Pneumatics & Hydraulics
Integrated Air Solutions has opened a branch in Pinetown, bringing world-class diesel and electric air compressor services closer to customers in KwaZulu-Natal.

Read more...
Cartridge-style flowmeter
Axiom Hydraulics Pneumatics & Hydraulics
Sun’s new cartridge-style flowmeter QMEH delivers precise, real-time flow measurements for demanding hydraulic applications. Using a custom-built, state-of-the-art sensor, the QMEH accurately detects flow and converts the electrical signal into a proportional flow rate.

Read more...
Robust sensors for pneumatic applications
ifm - South Africa Pneumatics & Hydraulics
The pressure sensors from ifm have a G1/8 process connection, combined with a welded thin-film measuring cell. While offering an unbeatable price/performance ratio, this technology provides for high measuring accuracy in a very compact and robust housing.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved