The pneumatic POSITIVE pressure conveying (or PRESSURE conveying) is dedicated  to the transfer of larger quantities of powder or granulates under following conditions:

• When the conveying capacity is high
• When the distance and/or height of transfer is high
• When the powder or granulate is «difficult» flowing
• When „dense phase“ conveying is required

The positive pressure conveyors of JetSolutions SA work under pressure of approx +0.8 bar (800 mbar rel.) and with pipe diameter up to 250 mm. Under these conditions the conveying capacity is around 30 to/hr with a «solid / air» ratio equivalent to 10 and more.

We recommend preferring the negative pressure versus positive pressure conveying. The positive pressure conveying shows the following disadvantages:

• More dust emission when discharging powder into a hopper
• More risk of dust emission in case of a leaking pipe
• More complex equipment at the loading point of the powder (blow tank or proof air lock needed)

The negative pressure conveying is dedicated to small quantity of powder or granulates when:

• the conveying capacity is limited
• the conveying distance is average
• the product is “easy” to convey

The negative pressure facilities designed by JetSolutions SA work under vacuum = -0,4 bar (600 mbar abs.) and with pipe diameters up to 100 mm. This means a capacity up to approx. 10 to/hr with a ratio «solid/air» equivalent to approx. 5 to 10.

We recommend using «negative pressure conveying» as much as possible because of the following advantages:

• less dust emission when discharging bags into the station (under vacuum)
• no risk of dust emission if the pipe is leaking
• simplification of the design of the discharge station

For the efficient storage of raw materials delivered in bulk. Efficient silo loading by means of pressure conveying. JetSolutions installs all conventional fill-level and monitoring devices.

Reliable JetSolutions components for silo dedusting and ventilation. Depending on the silo contents and emplacement, JetSolutions installs combined filter systems for air treatment as well as circulating units for drying.

Dust-free bulk powder transfer from cardboard boxes, sacks or drums by means of a feed hopper with weighing frame. Positive raw material identification and registration by means of barcode scanners.

The mixer is loaded with the individual raw materials exactly according to the formulation. The combination of Dosicon^®  weighing equipment with suction conveying units fulfils this task. Fundamental advanrages of JetSolutions automatic multi-component dosing are high dosing accuracy (for quantities ranging from a few hundred grams to several hundred kilos), the prevention of cross-contamination risks, and freedom from dust.

The combination of pneumatic suction conveyance and weighing equipment ensures efficient and dust-free material supply with high performance and accuracy.

The system is made up to a large degree of standardised hardware and software components. It is a monitoring and control tool for complete sequences of events. JetSolutions process control systems are complete solutions, optimally turned to the relevant system. They are structured using client-server architecture, linked via Ethernet and SINEC buses. In standard form, they work with the Windows NT operating system.  

The blowing units supply the energy for both pressure and suction conveying. According to the application, various types of compressors and vacuum pumps are used. JetSolutions always employs the most modern blowing technology, in particular with respect to energy saving and low noise emission. Blowing units of this type fulfil environmental protection requirements and bring optimum customer benefits.

Even with low-dust handling systems, the air used for transport or displaced from silos and containers must be vacuumed away and filtered. JetSolutions has many years of experience in designing and building dedusting systems and installs the filter type in the modular system that best fits  the application.