Flat Jet Nozzle

[Umbelina Baublitz]

Lechlerflat fan nozzles stand for high impact and uniform liquid distribution with spray angles up to 60. Flat fan nozzles with low flow rates are especially suited for humidifying and spraying in general. The flow geometry of the nozzle allows the production of accurate, compact sprays, available with different distribution patterns.

The spray pattern of flat fan nozzles features a sharply delimited line due to internal flow characteristics. The coverage width can be varied by modifying the geometric configuration of the nozzle orifices, where the liquid is shaped into flat, fan-like spray patterns. The flat liquid body takes on a laminar form and disintegrates into droplets as its distance from the nozzle orifice increases. Parabolic, trapezoidal or rectangular impact areas are achieved by adequately determining the functional and geometric dimensions.

I thought ide try a Stihl BG86 blower for this season. Have always been ok with a broom for 90% of jobs but occasionally a blower will come in handy. It is mainly for clearing grass cuttings. I have a choice of fitting flat head nozzle or round head nozzle. Might be a stupid question but is one better than the other for my needs and is there a particlular occasion when one nozzle is better than the other in use??

I think the flat head nozzle will push out a slightly higher speed of air but the round nozzle will push out a bigger but slightly slower volume of air. Personally I prefer the round nozzle but horses for courses and all that.

I would say the battery one performs as well for everyday blowing. The batteries only last 30 mins max but that is continuos blowing. In an average day of 8 general maintenace jobs we would probably get through 2, possibly 3 batteries but we carry our charger with us and most people are fine about you popping a battery on charge while you are on site. I always ask the first time obviously.

I pay 40 per year in a one-off payment as a Pro Member but the payback from this very small investment must be many thousands of pounds saved or gained through knowledge and advice. Only this week I have gained detailed advice from members in the BOG about specific charging rates for commercial weed control work, and received via e-mail a full set of COSHH and RAMS documents completely free of charge from a member, saving many many hours of personal work and research. Completely selflessly with no expectation of payment or reciprocity.

Lechler flat fan nozzles stand for uniform liquid distribution and jet pressures. Particularly powerful jets are generated with spray angles up to 60. Nozzles with small flow rates are especially suited for humidifying and spraying in general. The flow geometry of the nozzle allows to produce accurate, compact jets.

Cover more ground and upgrade your broadcast sprayer with Valley Industries Universal Broadcast Sprayer Flat Fan Nozzles. Designed for general spraying, this economical spraying tip is available with an 80 or 110 degree angle spray for medium size drips. Reduces drift when laying chemicals such as insecticide, herbicide and pesticide. For best performance stay within 30-60 PSI range. Ideal spraying height is 20-28 inches from top of grass, depending on degree of nozzle spray pattern. Comes standard with 4 flat fan nozzles. Compatible with Master Manufacturing and other branded broadcast sprayer boom kits.

By the part size, I'd expect to see some part warpage and lifting which will cause upper layers to be compressed - which may lead to clogging if the extruder can't create the pressure needed to continue extruding against the surface. You can usually hear this as the head starts banging into infill, and see 'smudging' or excess material on the perimeter.

You point something very interesting, on the almost good one i can clearly see an excess material on the perimeter right after the flat surface (ie, the bottom of the port 2 cm from the start of the print).

This close up shows highlighted debris that is probably caused by the nozzle scraping the part as it moves. There is more inside the perimeter that is also questionable. This is a symptom of the part lifting; and on large parts like yours, one side may lift a fraction of a millimeter and not even be visible to the eye. Increasing bed temp 5 to 10c is an easy fix.

Also - on large prints, GRID infill can cause problems since the nozzle moves fast enough it hits the last infill stripe as it moves along. It lays down the X direction fine, then scrubs across those places as it lays down the Y direction (you can hear the thumping). Slowing infill to under 100mm/s is one way to compensate... I use a different infill like 10% to 15% Gyroid. Gyroid is normally slower than Grid, but faster than slowing Grid to 75mm/s.

That line on the outside is from the part lifting from the bed. Glue isn't a solution, but a clean bed and raising the bed temp to 70c will help. I could show you dozens of prints where this lifting has happened. Most recent was a few days ago when I forgot to raise the temp after layer 1. Anything over 10cm is suspect.

It's also common to see artifacts where the print head changes motion; or acceleration rates change because the need now traces a new knob or protrusion on a print level. But in my experience these are usually small but visible high or low spots. What your photo shows is the point where the part lifted and material was squeezed out horizontally. All plastics warp to some extent. Even PLA. In some cases adhesion keeps the part held down then releases and a part lifts a corner a mm or more. Sometimes the part lifts due to a dirty bed and slowly a corner comes up. Slow lifts can leave no visible trace except the bottom is no longer flat, but curved up from the bed. A round object makes it hard to see the lift happening; but it's there.

The Buehnen Flat Nozzle comes in two different sizes 45 mm (3 hole) or 70 mm (4 hole) to fit a wide range of applications. Multiple streams of adhesive increase accuracy and precision. The flat nozzle is compatible with all Buehnen extrusion hot melt guns.

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Blowing with compressed air is common in industry when cleaning, drying, cooling, sorting or transporting objects. Silvent air nozzles are used in fixed installations and make efficient use of compressed air. All Silvent air nozzles feature the optimal combination of high blowing force, low energy consumption and low noise levels.

Air knives are most commonly used to blow away liquids, grime, airborne debris, etc. from surfaces or objects. Silvent air knives create a broad and effective flow of air that produces a pneumatic scraping effect without mechanical contact. All Silvent air knives feature the optimal combination of high blowing force, low energy consumption and low noise levels.

Manual blowing with compressed air is common in industry when cleaning, drying or cooling objects. Silvent air blow guns make efficient use of compressed air. All Silvent air blow guns feature the optimal combination of high blowing force, low energy consumption and low noise levels, at the same time as they are ergonomically designed for professional use.

Some industries and processes need more blowing force than a regular air blow gun can generate. Therefore, Silvent has developed air blow guns with high blowing force. The blowing force ranges from twice as strong up to 30 times stronger than a regular air blow gun. All Silvent air blow guns are safe, quiet and efficient, and are developed for professional use.

The noise from compressed air valves is extremely hazardous, but equipping valve discharge ports with pneumatic mufflers often causes operational disturbances. Silvent pneumatic mufflers have integrated warning indicators. The technology basically entails that the pneumatic muffler itself sets the optimal combination of flow capacity and noise suppression thanks to the dynamic internal filter, which subsequently minimizes operational disturbances and eliminates clogging.

To optimize blowing, it is sometimes necessary to be able to make pressure or blowing angle adjustments, for example. In other cases protection against airborne debris may be needed. Silvent has different types of accessories for easily performing various blowing tasks, optimally and safely.

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