Zellenradschleusen / Rotary Valves / Válvulas Rotativas · Nach ATEX RL 94/9/EG für Zone 20...

Zellenradschleusen / Rotary Valves / Válvulas Rotativas

S.S.T.-Schüttguttechnik Maschinenbau GmbH Lechwiesenstr. 21, 86899 Landsberg / Lech

Tel. 0049 (0)8191-3359-50 / Fax 0049 (0)8191-3359-55 Mail [email protected] www.solids.de

Zellenradschleuse Typ SRVS-Basic Austrags- und Dosierschleuse, Standard-Version nach ATEX RL 94/9/EG für Zone 20 innen, Zone 21 außen, mit Baumusterprüfung Rotary valve Type SRVS-Basic for discharging and dosing, standard-version acc. ATEX directive 94/9/EC for zone 20 interior, zone 21 exterior, with prototype technical-release testing Válvula rotativa Tipo SRVS-Basic

para descarga y dosificación, version standard según directiva ATEX 94/9/CE para zona 20

interior, zona 21 exterior, con modelo certificado por organismo notificado

Zellenradschleuse Typ SRVP-Schutzsystem Austrags- und Dosierschleuse, Schutzsystem Kategorie 1 nach ATEX RL 94/9/EG für staubexplosionsgefährdete Produkte, mit Baumusterprüfung Rotary valve Type SRVP-Protection system for discharging and dosing, protection system category 1 acc. ATEX directive 94/9/EC for products with dust explosion risk, with prototype technical-release testing Válvula rotativa Tipo SRVP- Sistema de protección

para descarga y dosificación, sistema protección categoria 1 según directiva ATEX 94/9/CE

para productos pulverulentos con riesgo de explosion, con modelo certificado por

organismo notificado

Protection system ATEX 94/9/EC

Zellenradschleuse Typ SRVC-Clean Austrags- und Dosierschleuse, leicht zerlegbar, Rotor auf Antriebswelle aufgesteckt. Nach ATEX RL 94/9/EG für Zone 20 innen, Zone 21 außen, mit Baumusterprüfung Rotary Valve Type SRVC-Clean for discharging and dosing, easy dismantling, rotor put on motor shaft. According ATEX directive 94/9/EC for zone 20 interior, zone 21 exterior, with prototype technical-release testing Valvlula rotativa Tipo SRVC-Clean

para descarga y dosificación, facilmente desmontable, rotor enchufable sobre el eje del

acionamiento. Según ATEX 94/9/CE para zona 20 interior, Zone 21 exterior, con modelo

certificado por organismo notificado

Zellenradschleuse Typ SRVS-Hygienic und SRVP-Hygienic Austrags- und Dosierschleuse aus Edelstahl, Hygienic-Ausführung nach HACCP, GMP-/FDA-konform, Innenflächen poliert, gerundete Rotortaschen. Nach ATEX RL 94/9/EG für Zone 20 innen, Zone 21 außen, mit Baumusterprüfung, auch als Schutzsystem Rotary valve Type SRVS-Hygienic and SRVP-Hygienic for discharging and dosing in stainless steel, Hygienic-version acc. HACCP, conform to GMP/FDA, interior surfaces polished, rounded rotor recess. According ATEX directive 94/9/EC for zone 20 interior, zone 21 exterior with prototype technical-release testing, also as protective system

Valvual rotativaTipo SRVS- Hygienic y SRVP-Hygienic

para descarga y dosificación, fabricado en acero inoxidable, version hygienic según directiva

HACCP, conforme GMP-/FDA, superficie interior pulida, alveolos redondeados. Según ATEX

94/9/CE para zona 20 interior, zona 21 exterior, con modelo certificado por organismo notificado,

también como sistema de protección

Zellenradschleusen / Rotary Valves / Válvulas Rotativas



Räumradschleuse Typ RRS-Basic / -Clean / -Heavy Störungsfreies Austragen und Dosieren bei anhaftenden, klebrigen, nicht fließfähigen Schüttgütern, mit Zwangsräumer zur vollständigen Entleerung der Taschen Self Cleaning Rotary Valve Type RRS-Basic / -Clean / -Heavy Trouble-free discharge and dosing of sticky, non-flowing bulk solids, with self cleaning paddle for completely emptying of the pockets Valvlula rotativa con descarga forzosa Tipo RRS-Basic / -Clean / -Heavy Para productos de mala fluidez, pegajosos, húmedos y para los tendentes a la formación de costras. El rascador rotativo atraviesa las células y las vacía totalmente.

Zellenradschleuse Typ ZRSC-Basic Austrags- und Dosierschleuse, Kompakt-Version, einfacher Aufbau, kostengünstig Rotary valve Type ZRSC-Basic for discharging and dosing, compact-version, simple assembly, cost-efficient Válvula rotativa Tipo ZRSC-Basic para descarga y dosificación, version compacto, sensillio, economico

Zellenradschleuse Typ ZRSR-Heavy Austrags- und Dosierschleuse, Gussgehäuse, optional mit Panzerung, temperaturbeständig, verschleissfest, hohe Förderleistung Rotary Valve Type ZRSR-Heavy for discharging and dosing, casted housing, optional with wear resistant layer, temperature- /wear-resistant, high conveying capacity Valvlula rotativa Tipo ZRSR-Heavy para descarga y dosificación, cuerpo en fundicion, optional con revestimiento antidesgaste, y/o resistente a temperatura

Zellenradschleuse Typ ZRSW-Heavy Austrags- und Dosierschleuse, Schweisskonstruktion, auch Edelstahl, verschleissfeste und temperaturbeständige Werkstoffe, sehr hohe Förderleistung Rotary Valve Type ZRSW-Heavy for discharging and dosing, welded housing, also stainless steel, wear- and temperature-resistant materials, very high conveying capacity Valvlula rotativa Tipo ZRSW-Heavy para descarga y dosificación, construction en mecanosoldadura en acero al carbono o inoxidable, optional resistente a desgaste y/o temperatura

solids Rotary Valve

Type SRVS-Basic



Rotary feeder for discharging and dosing, standard-version, acc. ATEX directive 94/9/EC for zone 20 interior, zone 21 exterior, with type examination test

Advantages:

• robust and low-wear

• cost-efficiency and low maintenance

• space saving

• gas tight outwards

• Appropriate for application acc. ATEX directive 94/9/EC in zone 20 interior, zone 21 exterior

• Reliability for operator due to type examination test with declaration of conformity

Identification: II 1/2 D

solids Rotary Valve

Type SRVS-Basic



Exterior bearing, free from play and robust, low maintenance

Option: Extraction device

Type Ø In-/Outlet mm

Height mm

Flow rate l/rotation

Material housing

Material rotor

SRVS150 150 320 2,5-5 Iron casting Special steel

casting Aluminium

casting

Mild steel Stainless

steel Aluminium

SRVS200 200 375 5-10 SRVS250 250 430 10-19

Option: Sealing air connection

C



Components and protective systems acc. ATEX directive 94/9/EC

Constructive explosion protection

Pressure shock resistant filter

Explosion pressure relief without the emission of flame

Pressure proof vessel, possibly with a reduced

explosion pressure

Explosion pressure sensor

Autonomous control electronics

Protective system-Rotary valve Category 1 acc.

ATEX directive 94/9/EC

solids Rotary Valve

Type SRVP-Protective System



Rotary feeder for discharging and dosing, as protective system acc. ATEX for products with dust explosion risk

Advantages: Pressure shock resistant 13 bar g and flame propagation proof, Protective system category 1 acc. ATEX-directive 94/9/EC, Dust explosion category St2, zone 20 interior, dust explosion risk permanent, long-term, oftentimes, zone 21 exterior, with type examination test by notified body

Identification: II 1/2 D

solids Rotary Valve

Type SRVP-Protective System



Pressure shock resistant housing, 13 bar g, with water pressure testing

Rotor is pressure shock resistant and flame propagation proof, flame and pressure shock are stopped by the rotary valve


Height mm

Flow rate ca. l/rotation

Material housing

Material rotor

SRVP150 150 320 3,5 Iron casting Special steel

casting

Mild steel Stainless

steel SRVP200 200 375 7 SRVP250 250 430 15

Shaft seal

Option: Sealing air connection

Exterior bearing, free from play and robust, low maintenance

solids Rotary Valve

Type SRVC-Clean



Rotary feeder for discharging and dosing, easy dismantling, rotor put on motor shaft. Foodstuffs- and Fine chemistry- design, according ATEX directive 94/9/EC for zone 20 interior, zone 21 exterior. Dust explosible atmosphere permanent, long-run, oftentimes. With type examination test by notified body. Identification: II 1/2 D

solids Rotary Valve

Type SRVC-Clean



Advantages: • Suitable for foodstuffs, easy dismantling, easy cleaning

• Easy to maintain

• robust and low-wear

• cost-efficiency and low maintenance due to simple assembling

• space saving

• gas tight outwards


Height mm


Material housing

Material rotor

SRVC150 150 320 2,5-5 Iron casting Special steel

casting Aluminium

casting

Mild steel Stainless steel

Aluminium SRVC200 200 375 5-10 SRVC250 250 430 10-19

solids Zellenradschleuse Typ ZRS

Heavy Design



Discharge and dosing device, for the discharge from silos and / or entry in pressure- or vacuum conveying lines, even for high temperatures

Advantages: • robust, buckling resistant iron construction

• wear-proof

• temperature resistant

• Option: Housing inside, hard chromed Bearing shields with armoured protection by hard build-up welding, Rotor equipped with carbide metal

solids Zellenradschleuse Typ ZRS

Heavy Design



Sizes:

Type In-/ Outlet mm

Height mm


Material housing

Material rotor

ZRS250/430 Ø 250 430 19 Iron casting Special steel

casting

Mild steel Stainless steel

with wear protection

ZRS250x400 250x400 560 34 ZRS315x500 315x500 670 74

Further options: Leakage air collector, granulate inlet, blowing shoe for vacuum- and pressure conveying

Widely offset bearings, free of play and robust, low maintenance

Shaft feedhrough with packing gland, optional with sealing-/ flushing air connection

Robust cast metal housing

Optional: removable and adjustable rotor blades

Attachable gear motor

solids Rotary Valve Type SRVS-Hygienic

Hygienic Design



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Rotary valve for discharge and feeding, suitable for feeding in pressure- or suction conveying lines, hygienic-version acc. EHEDG-Guidelines with certificate type EL-Class II

Advantages:

• Fulfills GMP- / FDA-requirements, DIN EN 1672-2 (food machines) and DIN EN ISO 14159 (hygienic requirements)

• Easy dismantling, easy cleaning

• Simple and time-saving disassembly and assembly of the rotor without adjustment of the clearance between rotor and housing

• Acc. ATEX-directive 94/9/EC, zone 20 interior, zone 21 exterior with type examination test by a notified body

• Suitable for wet cleaning in assembled condition (CIP) with following inspection and secondary cleaning, if necessary


Hygienic Design




Hygienic characteristics: • In contact with product surface quality acc. ≤ 0,8µm • Weldings free of gaps and scattered (≤ 0,8µm)

• Corners and edges with big radius

• Easy to dismantle and to clean

Bearing bracket extensible

Rotor with extensible bearing bracket

Rotor with rounded chambers

Exterior bearing, free of clearance and robust, low maintenance


Hygienic Design




seamless connection at the inlet and outlet

axial centering device with adjustable screw socket and fixed stop

axial free of clearance rotor bearing by use of suitable ball bearings and axial fixing of the bearing bushing

fixing of the rotor with only one bolt

double centering of the shaft end in the bearing bushing


Hygienic Design





Height mm


Material housing

Material rotor

SRVS-Hygienc 150 150 320 3,2 Special steel casting

Stainless steel SRVS-Hygienc 200 200 375 7

SRVS-Hygienc 250 250 430 13

bearing of the rotor in the shield with bearing bushings advantage: when pulling the rotor out the sealings remain intact, because the bearing bushing stay in the shield

double bearing of the rotor shaft in the bearing bushing advantage: exact radial fixing and absorbing of high bending moments due to pressure differences

Sealing of the bearing and the rotor shaft against the product zone by use of a co-rotating seal disc and a circular flushing chamber with purge air / gas advantage: the area of the bearing need not to be cleaned during COP-cleaning the purge air / gas prevents the entry of the cleaning fluid into the area of the bearing

purge gas entry

solids Rotary Valve Type SRVP-Hygienic

Hygienic Design



O:\SST-Marketing\Web Site SST\02_Mech_Fördern_Schnecken_ZRS_RRS\03_Zellenradschleusen\NEU 2010-2016_Prod.beschreibungen Schleusen\englisch\HP_SRVP-Hygienic_engl_221116.doc

Rotary valve for discharge and feeding, suitable for feeding in pressure- or suction conveying lines, hygienic-version acc. EHEDG-Guidelines with certificate type EL-Class II, as protective system acc. ATEX for products with dust explosion risk Advantages:

• Fulfills GMP- / FDA-requirements, DIN EN 1672-2 (food machines) and DIN EN ISO 14159 (hygienic requirements)

• Easy dismantling, easy cleaning

• Simple and time-saving disassembly and assembly of the rotor without adjustment of the clearance between rotor and housing

• Pressure shock resistant 13 bar g and flame propagation proof, protective system category 1 acc. ATEX-directive 94/9/EC, zone 20 interior, zone 21 exterior, with type examination test by notified body

• Suitable for wet cleaning in assembled condition (CIP) with following inspection and secondary cleaning, if necessary


Hygienic Design




Hygienic characteristics: • In contact with product surface quality acc. ≤ 0,8µm • Weldings free of gaps and scattered (≤ 0,8µm)

• Corners and edges with big radius

• Easy to dismantle and to clean

Bearing bracket extensible

Rotor with extensible bearing bracket

Rotor with rounded chambers

Exterior bearing, free of clearance and robust, low maintenance


Hygienic Design




seamless connection at the inlet and outlet

axial centering device with adjustable screw socket and fixed stop

axial free of clearance rotor bearing by use of suitable ball bearings and axial fixing of the bearing bushing

fixing of the rotor with only one bolt

double centering of the shaft end in the bearing bushing


Hygienic Design





Height mm


Material housing

Material rotor

SRVP-Hygienc 150 150 320 2,5 Special steel casting

Stainless steel SRVP-Hygienc 200 200 375 6

SRVP-Hygienc 250 250 430 12

bearing of the rotor in the shield with bearing bushings advantage: when pulling the rotor out the sealings remain intact, because the bearing bushing stay in the shield

double bearing of the rotor shaft in the bearing bushing advantage: exact radial fixing and absorbing of high bending moments due to pressure differences

Sealing of the bearing and the rotor shaft against the product zone by use of a co-rotating seal disc and a circular flushing chamber with purge air / gas advantage: the area of the bearing need not to be cleaned during COP-cleaning the purge air / gas prevents the entry of the cleaning fluid into the area of the bearing

purge gas entry

solids Self Cleaning Rotary Valve

Type RRS


Tel. 0049 (0)8191-3359-50 / Fax 0049 (0)8191-3359-55 E-mail [email protected] www.solids.de

Trouble-free discharging and dosing of sticky, viscous and non-flowing bulk solids; with a forced scraper for complete emptying of the chambers

Advantages:

• Ensures the trouble-free operation of the system when handling bulk solids having a tendency to stick, form coats and clot.

• Prevents expensive system standstills (e.g. cleaning) and production failures.

• Can be adapted to the prescribed or existing cross-section openings

• Can also be retrofitted if conventional rotary valves have failed


Type RRS



Characteristics: • For poorly flowing, humid products

• When vapours coming up from downside

• Rounded chambers

• Forced scraper; counter-rotating with respect to the rotor; ensure complete emptying of the chambers

• Common drive for the rotor and the scraper using synchromesh gears

• External bearing

• Pressure-shock-resistant up to 10 bar

• Sizes: from 200 x 200 mm to 500 x 800 mm

• Capacity range: 2 - 200 m³/h

Rotor

Exchangeable, ad-justable sealing strips

Scraper for com-plete emptying the chambers

Rounded chambers


Type RRS



Pressure-shock-resistant self cleaning rotary valve RRS250

Self cleaning rotary valve, installed


Type RRS



High temperature self cleaning rotary valve in heavy-design, up to 350°C

The self cleaning rotary valve type RRS-Heavy-HT has high temperature bearings, which are outside positioned and wide offset incl. cooling air supply with solenoid valve, pressure control-ler and fixed piping. The saft throughput is equipped with packing glands and purge air supply incl. solenoid valve, pressure controller and fixed piping.

solids Rotary Valves

Type ZRS



Discharge and metering rotary valve, for discharge of silos and/or feed into pressure or vacuum conveying pipelines ; even for dust explosion hazardous products

Advantages:

• Sturdy and less wear

• Cost-effective and low maintenance due to simple assembly

• Space-saving

• Gas-tight from outside

• Protection against spreading of dust explosions and effective flame trap

• Safety for operators, with a DMT certificate


Type ZRS



Functions and operating modes of a rotary valve Generally a rotary valve has two basic functions: Discharging and metering. Both the functions have an additional task to establish an air lock point between two sections of the system. Absolute air lock is however not possible at the given pressure difference. The flow of the leakage air can only be minimised. Discharge The basic function of pure discharging is executed by the well-known basic rotary valve: In the housing the rotor is revolving by constant speed. Due to gravity the product comes out from the container or the hopper from the top and falls in the chambers of the rotor. Due to the revolving rotor the product is transported to the discharge opening, from where it again moves down by gravity. The rotary valve itself does not affect the flow capacity of bulk solids. It depends on the chamber volume, filling ratio and rotation speed. Metering The rotary valve for metering is characterised by a variable speed, e.g. using a variable-pitch geared motor or a frequency converter drive. The metering is purely volumetric in such a case: A specific volumetric flow per time unit is set as the desired value in dm ³/s or m³/h. It is however not measured so that there is an undefined deviation between the desired and actual values. The mass flow capacity is not measured and regulated, and therefore the term, "metering" is actually incorrect in the strict sense; a constant and reproducible volumetric flow can however be set. The condition is, that a) the density of bulk solids is always constant, b) the rotor is always fed with the same filling ratio. This can be achieved, e.g. using an

agitator or a pneumatic discharge aid in the pre-hopper over the rotary valve, c) the chambers are emptied completely.


Type ZRS



Volumetric metering using solids rotary valves

Standard rotary valve, type ZRS:

• Housing with inlet and outlet

• Horizontal rotor with chambers (see rotor versions)

• Filling the chambers at the inlet

• Downward transport by rotation

• Emptying due to gravity; free discharge at the outlet

• Setting the volumetric flow by changing the speed

• Sizes from entry-∅ 150 to 500 x 1000 mm

• Capacity range: from 100 dm³/h to 200 m³/h

Conditions: The maximum particle size must be determined depending on the pressure difference and other product properties.

Most important rotor versions:

a) Basic version: - Fixed bars - For non-wearing

products

b) Replaceable, adjustable sealing strips - made of

elastomer or cutting strip

- for moderately wearing products

c) Rounded chambers - with/without

replaceable sealing strips

- for slightly accumulating products

- with coated chamber surface

d) Towing vane made of elastomer

- for granular, sticky and fibrous products


Type ZRS



Characteristics (here as an example of a pressure-shock-resistant rotary valve):

Optional: radial shaft sealing rings with a sealing gas connection

Cast housing; with pressure test on request

pressur-shock-

resistant rotor

Pressure-tight shaft seal Packing gland up to 200 °C

Rotor for dust explosion class ST1

Adjustable and replaceable rotor

strips

Rotor for dust explosion class ST3

External bearing

Solid rotor design

Rounded chambers


Type ZRS



Foodstuffs version:

Complete with a leakage air collector and a blowing shoe:

Rounded chambers

Slip-on gear


Type ZRS



Accessories: Leakage air collector for optimised diversion of leakage air from the pressure conveying by the solids rotary valve; inclusive of the granulate inlet for granular products

Advantages: • Space-saving

• Fail-safe; prevents coarse grains from clamping

• Cost-effective

• Increases the conveying capacity

Characteristics: • Welded steel design; all commonly available steel and stainless steel qualities

• For pressure conveying

• Nominal widths 150 to 350 mm corresponding to the rotary valve

Product inlet

Leakage air diversion


Type ZRS



Blowing shoe below the metering equipment for filling a pneumatic conveying pipeline

Advantages: • Space-saving

• Fail-safe

• Cost-effective

• Can be connected to all metering equipment

Characteristics: • Welded steel design; all commonly available steel and stainless steel qualities

• Pressure-resistant

• For suction and pressure conveying

• Conveying pipe nominal widths 50 to 150 mm

Product inlet

Air inlet

Product + conveying

air

Zellenradschleusen / Rotary Valves / Válvulas Rotativas · Nach ATEX RL 94/9/EG für Zone 20...

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Transcript of Zellenradschleusen / Rotary Valves / Válvulas Rotativas · Nach ATEX RL 94/9/EG für Zone 20...