HERDING®-ALPHA-filter is a high temperature resistant filter, basically made of clay and glass, designed for temperature ranges up to 350°C and has excellent chemical resistance, especially at higher temperatures. The cylindrically shaped matrix elements are coated on the outside with an inorganic layer in order to guarantee a surface filtration with a long lifetime at low pressure losses when separating finest dusts.
HERDING®-ALPHA-filter elements (clusters) are horizontally installed into the filter unit. This results into a compact and space-s***ing design and makes mounting extremely efficient.
The filter elements, set up in clusters, are cyclically cleaned on-line by the jet-pulse-cleaning system. Remarkable advantages of the HERDING® ALPHA-filter: • | C***tant operation of the filter at low pressure loss. | • | Temperature-resistant up to 350 °C. | • | Excellent efficiency of separation. | • | Easy access to the filter elements during installation. | • | Filter element installation from the clean gas side. | • | High flexibility at the design of filter systems. | • | Compact design, high ratio of filter surface per volume disposition | • | Not flammable | Application: | • | Combustion process | • | Drying process |
|
 |  |
HERDING® filter units, type HSL c***ist of three components bolted together:
The top-section c***ists of an acoustic hood with a radial fan. An inspection door allows at any time an easy access to the fan for maintenance and check-ups. The cleaned air is either recirculated or discharged to the atmosphere.
The center-section is subdivided into a clean air space and a raw gas space by a specially developed slotted plate. The clean gas space accomodates the complete cleaning system with the compressed air-tank, the quick opening and safety valve as well as the blow pipes. In the raw gas space our patentedHERDING® sinter plate filterare installed, granting clean gas value of <1mg/Nm².
The bottom-section c***ists of a support structure, customized and equipped with various discharge devices.
|
|  |
Herding® DELTAComp
| | The new and compact unit design DELTAComp enables the user and operator to make a flexible choice regarding air flow and the size of the unit.
Easy access for operation and maintenance from the front as well as the low profile of the unit are results of our unique user-friendly design approach.
Depending on the air flow, our DELTA or DELTA² elements can be horizontally installed in either one or two levels. With this newly developed filter unit by HERDING the idea of a compact and flexible design was c***equently put to reality. The DELTAComp can be used for an air flow of up to 6.000 m3/h. The electrical controls as well as the fan are integrated into the filter unit. The lower section of the unit can be delivered with a pulse coater, a spark separator, a fire protection system, or a pneumatic dust discharge. The new space s***ing concept of our DELTAComp units convinces especially by the flexibility of serving in various applicati***. |
|
| 
| | SAMPLE APPLICATI*** OF THE NEW DELTAComp-SERIESLaser Applicati***:
Laser machining usually generates extremely fine dusts and fumes during the cutting and welding process. On the one hand this can cause health haza*** and on the other hand contaminate and damage the machine, the aggregates as well as the processed material. Furthermore some dusts can be even highly inflamed and/or sticky. For this application, we recommend a DELTAComp, which is equipped with a spark separator and a Herding® pulse coater. Spring and Wire Industry:
During the production of springs or wires an optimum dust capturing as well as a c***tant cooling of the tools are the key factors to maintain a c***tant product quality. The high separation efficiency of the filter elements is equally important like maintaining the required air flow by holding c***tant pressure drop values across the filter elements. Coating of Tablets or Seeds:
During the coating process of tablets or seeds an exact defined air volume is c***tantly exhausted from the coating-process. This is necessary in order neither to let hazardous material into the workshop nor to loose any product. A c***tant air flow is decisive for high product quality (e.g. coating thickness). Polishing of Steel:
While polishing steel e.g. fittings and mountings, not only the fine dust arises but also flammable material. Polishing paste which is very sticky may even be mixed with the extracted dust. For this application the DELTAComp can be equipped with our pulse coater as well as with a fire protection system. More applicati*** for the DELTAComp are to be found in several industries like:
Pharmaceutical, Food, Glass, Ceramics, Plastics, Stone, Powder Coating, Chemical, Metal Processing etc.v |
| |
Herding® DELTAFlex
| | The new and compact DELTAFlex design enables the end user and the operating company flexibility with a ***all foot print, particularly when large air flows are of concern.
The filter elements are mounted vertically and depending on the application, the filter unit will be equipped with DELTA- or DELTA²-filter elements.
The safety concept and the unit design following the ATEX-safety regulati*** will follow your needs. With this newly developed filter unit series by Herding, the idea of a compact and flexible design was c***euently converted into reality. The modular version of DELTAFlex can handle air flows of up to 400,000 m3/h. The DELTA- and DELTA²-filter elements are vertically installed into the DELTAFlex housing. Depending on the requirements and the filter unit design, the filter elements can be arranged in a single row, in two rows or even up to three rows. |
|
| 
| | APPLICATI*** – The new DELTAFlex-SeriesThe DELTAFlex filter units are suitable for the separation and / or product recovery of fine, adhesive or even abrasive dusts. Powder Coating:
C***tant air flow and laminar air flow are of significance for optimal and efficient results during electro-static powder coating. With the Herding® DELTA- or DELTA²-filter element a contamination free product recovery of overspray is given as contaminating of the powder through the use of the Herding® filter element is excluded. Steel Pipe Production:
The production of seamless steel pipes demands maximum up-time of the whole manufacturing process including also the filtration system. It is to be assured during the forming, rolling and gauging of the pipes that the extraction of the steam, metal oxides and graphite is continuous and steady as these contaminants may adversely affect the pipe surface quality. Extraction of Welding Fumes:
When extracting welding fumes, produced by partly oily or greasy sheet metal, the capturing method and an effective filtration are significant since most times the clean gas is returned to the work area.
Depending on the state or quality of the sheet metal a pre-coating material may be necessary, which is applied as a filter aid onto the Herding® rigid body filter element DELTA or DELTA² by means of the Herding® MultiCoater. Toner Dusts:
During the production and aspiration of toner powder for color cartridges the filter unit has to be carefully selected with regarding the ATEX-regulati*** and other safety aspects (classification of -zones). Should an explosion hazard be of concern, the DELTAFlex unit can be equipped with a horizontally or vertically installed rupture disk. Furthermore an explosion discharge duct can be optionally added to vent the pressure of a possible explosion away from the filter unit into a low risk area.
As an alternative to the rupture disk, the unit may be equipped with an explosion suppression system which utilizes the injection of dry extinguishing powder. More applicati*** for the DELTAFlex are to be found in several industries like:
Automotive, Chemical, Pigments, Glass, Plastics, Food, Metal Processing, Pharmaceutical, Recycling, Stone, Cement, etc. |
Herding® filter-modular system DELTASys | |
| |  | |
With the new DELTASys-system developed by HERDING the idea of a modular design has been c***equently transferred. Those filter units show a filter area of 90 to 1125 m² and are designed for a volume flow of 4.000 to 135.000 m³/h. Complete units (with built-in fan) are ***ailable to up to 27.000 m³/h . The modular design such as blocks, rows and modules can easily adapt to the conditi*** at site. With limited floor space ***ailable the units can be built vertically, with limited height horizontally.
|
| | |
Dust removal – custom made
Due to its variability of the DELTASys-system the discharge equipment can be chosen, e.g. as a rotary air lock, dust bin or forklift support dust bin. Even removal of retrofitted components is possible due to standardized components and flanges.
More excellent characteristics of this design are the Herding-DELTA-filter elements, which can be installed horizontally from the clean gas side. The so called Down-flow-Principle is also used with the DELTASys-system. | | | Down-flow-principleThe down-flow-principle is based on the idea to direct the raw gas flow in the same direction as the dust removal. Thus the dust removal process is more efficient. |  |
|  |
ALPHASys from ca. 6.000 m³/h to ca. 18.000 m³/h
| | HERDING®-filter modular system for high temperaturesThe HERDING®-ALPHA-filter elements are horizontally mounted in "clusters” from the clean gas side. Several clusters are installed on top of each other and generate a "filter block”. Several filter blocks are arranged adjacent to each other, which makes a filter unit. Depending on the ***ailable space filter units can be arranged as a "double row”, if an access from two sides is possible.
Design of the filter system:Sample for appr. 17.000 m³/h with a face velocity of ca. 1,3 m³/m²/min. | | | Top View
(double row) | Front View
(filter unit) | Side View
(double row) |
|
|
|
DELTA Force Filtration | | | The Innovative, Effective Solution to Coolant and Wastewater Filtration -
Utilising a „True Permanent Media“Herding GmbH Filtertechnik has introduced together with the Monlan Group next generation of filter aid free
„Permanent Medium Filtration“. The new Delta Force Filtration™ system eliminates disposal media and reduces the costs of operation. Applicati*** for this new filter include general machining and grinding for individual machines or central systems, and wash water filtration. The Delta Force Filtration system provides a c***tant dependable flow of clean process Fluid back to the machine. These Filters utilise a vacuum system to draw dirty process Fluid through the Herding® Permanent Filter element. Customers will see a reduction in their maintenance and operation costs by eliminating media change out and disposal media purchase. With no media to dispose of and no filter aid disposal, waste hauling charges will be reduced. Features- Permanent back flushable media Eliminates maintenance and disposal media costs
- Back flushes with clean process Fluid no additional Fluids or large volume of air is required
- Integral drag out system for removal of solids
- Removal of particulate down to 10 Micron level
- Flow rate nominal 80 l per LPM per m² filter area
- 100 % filtration - no bypassing of solids or cake build up is necessary to maintain 10 Micron filtration level
Benefits- Tramp Oils do not effects process flow rate
- Cleaner Fluids results in longer tool life, fewer wheel dressings, better surface finishes, higher production rates
and improved housekeeping - Eliminates the disposal media and filter aid waste stream adhering to ISO EN 14001
|
System OperationThe dirt laden liquid enters the system via gr***ity or transfer pump flowing into the receiving tank where The filtration process takes place. Located in the process tank are manifolds of Herding® Permanent Media Filter elements. The process Fluid is drawn through these patented sintered plastic elements, collecting the particles on the filter element surface. When the system vacuum switch reaches its set point, a back flushing cycle is initiated. A series of actuated valves along with a back flushing pump will clean each filter in series without interrupting the clean flow back to the machining Centres. Filter TankThe tankage is composed of two (2) secti***. The Receiving tank contains the filter elements and drag out Conveyor system. The regeneration tank acts as the Reservoir from which clean Fluid is drawn during the Back flushing cycle. Applicati***• | All Grinding Applicati*** | • | General Machining | • | Honing & Gear Cutting | • | Wastewater Filtration | • | Central Systems | • | Retrofit of Existing Systems |
| Sample | Coolant | before Delta Force Filtration Number of Particles 5 Micron & Above | After Delta Force Filtration Number of Particles 5 Micron & Above | Effectiveness | | Machining of Cast | Semi-Synthetic 8% Concentration | 2,681 | 93 | 96,5% | | Aluminium & Brass Chips, Steel Grinding Swarf | Synthetic Coolant 10% Concentration | 3,971 | 210 | 95,0 | | Aluminium & Brass Chips, Steel Grinding Swarf | Semi-Synthetic 5% Concentration | 2,447 | 169 | 93,0 |
|
|
Special Herding® products | | • Quick-Top / top filter, easy to be installed for bunker and for pneumatic conveyance
• filter elements Herding-DELTA 1200 -12/9 SC for laser application
• WIP-Option (washing in place) / cleaning of filter elements while installed, e.g. during a product change
• fire protection equipment
• units with pressure relief during explosion
• pressure resistant housings during explosion
• HERDING® pharma-compact filter |
|
|
