Load-Well™ PVL powder vacuum loader with automatic filter cleaning
For powders and materials with a high fines content, in SS-304. The filter is cleaned by reverse pulse between loads, so suction does not decay through the shift.
Key features
- Reverse-pulse filter cleaning from a compressed-air accumulator on the machine, timed by the control
- Closed and loss-free: the powder knocked off the filter goes to the process with the rest of the material
- Rotary paddle level switch: chosen because powder blinds an optical sensor
- Tool-free access: clamped lid opens by hand; the 500 mm cartridge lifts straight out
- SS-304 body and wetted parts: parts can be washed and put back
Technical specifications
| Type | Powder vacuum loader |
| Suitable for | Powders and materials with a high fines content |
| Wetted parts | SS-304 |
| Receiver volume | 14 L |
| Body diameter | 300 mm |
| Cone height | 175 mm |
| Discharge | 95.6 mm, gravity |
| Material port | 51 mm |
| Suction port | 51 mm |
| Filter cartridge | Pleated polyester, 500 mm long |
| Filter area | 1.728 m² |
| Filter cleaning | Reverse pulse, from a compressed-air accumulator on the machine |
| Level sensing | Rotary paddle level switch |
| Lid | Clamped, opens by hand |
Conveying capacity depends on material type, bulk density, conveying distance and vertical lift. Not recommended for flammable, explosive, liquid or semi-liquid materials, nor for carbon black and titanium dioxide. All specifications are subject to change without notice to improve reliability, function or design.
Designed for powder conveying
A granule is heavy enough to fall out of the air stream on its own. Powder is not. It follows the air all the way to the filter and packs into the pleats, and once it has, suction falls away. The loader takes a little longer to fill, then a little longer again, and by the end of the shift it cannot keep up with the machine it is feeding.
Everything about this loader is built around that one problem.
Reverse-pulse filter cleaning
- Powder follows the air all the way to the filter
- A cake builds on the outside of the pleated cartridge
- Left alone, suction would fall through the shift
- The solenoid valve fires a pulse of air backwards through the cartridge, from the accumulator on the machine
- The cake is knocked off and falls into the cone
- It goes to the process with the rest of the material
Reverse-pulse filter cleaning: full explanation
A compressed-air accumulator and solenoid valve are mounted on the machine. Between loading cycles the valve fires a pulse of air backwards through the cartridge, and the cake of powder that has built up on the outside is knocked off. It falls into the cone and goes to the process with the rest of the material.
No vessel is unclamped, no dust is released into the room, and nothing is thrown away — the powder that comes off the filter is product, and it ends up where it was going anyway.
The control times the cycle, so it runs without the operator having to notice a problem. The conveying rate at the end of a shift is the rate it started with, and the filter does not have to be stripped down mid-shift.
Rotary paddle level switch
Level is sensed by a rotary paddle level switch. Powder coats a lens within hours and an optical sensor then reads full when the vessel is empty; powder does not stop a paddle turning. The level signal stays reliable for the operator.
Tool-free access
The lid is clamped and releases by hand, and the 500 mm cartridge lifts straight out for washing or exchange — which matters on a machine that runs powder, because the cartridge is the one part that will be handled routinely for the life of the loader.
Body and wetted parts are SS-304, so what comes out can be washed and refitted.
Dimensions and mounting
The body is 300 mm in diameter, the cone falls 175 mm to a 95.6 mm discharge, and both the material and suction connections are 51 mm. It mounts over the machine hopper and discharges by gravity.
Other Load-Well™ loaders
SVL · SVL SS-304 · AVL · Compare all four
Load-Well™ is a trade mark of A.B. Plastech — application 6999170, Class 7.
Questions buyers ask
What is Load-Well PVL for?
Powders and materials with a high fines content. The body and wetted parts are SS-304.
How does the filter stay clear?
Reverse-pulse cleaning: between loads a pulse of air from a compressed-air accumulator on the machine knocks the powder cake off the cartridge, and it falls back to the process with the rest of the material.
What are the main dimensions?
A 14 L receiver, 51 mm material and suction ports, and a 1.728 m² pleated polyester filter cartridge, 500 mm long.
What is it not suited to?
It is not recommended for flammable, explosive, liquid or semi-liquid materials, nor for carbon black and titanium dioxide.
Is it easy to open?
Yes. The clamped lid opens by hand and the 500 mm cartridge lifts straight out, with no tools.
How do I get a quote?
Call or WhatsApp +91 94160 55854, or send the quote request on the Contact page. Tell us the material, how much per hour and when you need it. We read every complete enquiry ourselves.
Request a quote for Load-Well™ PVL
Tell us what the powder is, its bulk density, how much has to move per hour and what machine it feeds, and we will tell you which loader fits — including when the answer is a different model from this one.
A.B. Plastech · Modern Industrial Estate, Bahadurgarh, Haryana
pawar@abplastech.co.in
abautomech@hotmail.com