- Email: [email protected]
Pumps aid conservation of historic wreck
PPLICATIONS
[i
Sticky p r o b l e m at b o o k printers
Bookcraft ( B a t h ) Ltd in Mids o m e r Norton, UK, s p e c i a l i s e s in s h o r t run b o o k p r o d u c t i o n for t h e a c a d e m i c m a r k e t a n d prod u c e s a r o u n d 50 000 b o o k s w i t h 50 t i t l e s in an average week. A W a t s o n - M a r l o w peris t a l t i c p u m p h a s recently prov i d e d a h e l p i n g h a n d with t h e i r production. At Bookcraft, a Kolbus DA 36 c a s e - m a k i n g m a c h i n e uses an a n i m a l bone b a s e d glue at a t e m p e r a t u r e of 50°C to p r o d u c e t h e covers. Prior to t h e instalIation of the Watson-Marlow p u m p , t h e glue was s u p p l i e d to t h e c a s e - m a k e r by a progressive cavity p u m p . However, t h e comb i n a t i o n of t h e a b r a s i v e n a t u r e of t h e glue a n d t h e relatively high t e m p e r a t u r e , c a u s e d t h e r u b b e r s t a t o r to need r e g u l a r replacement. Switching to a Watson-Marlow 701FB/R fixed s p e e d p u m p to m e t e r t h e glue now e n s u r e s that the case-making machine h a s a c o n t i n u o u s s u p p l y of glue to t h e p a s t i n g rollers, so m a i n taining production rates and v i r t u a l l y e l i m i n a t i n g downtime. The 7 0 1 F B / R e m p l o y e d a t Bookcraft is fitted w i t h Neop r e n e t u b i n g a n d p r o v i d e s flow r a t e s between 50 a n d 250 1/h. The p u m p o p e r a t e s for s i x t e e n h o u r s each d a y a n d t u b e life is r e p o r t e d to be very good.
Contact: Heather Beale, Watson-Marlow Ltd, Falmouth, Cornwall TR11 4RU, UK. Tel: + 4 4 1326 370370; Fax: 44 1326 376009.
Dye m i x i n g system J o s h u a W a r d l e Ltd h a s i n s t a l l e d a new dye m i x i n g system incorp o r a t i n g 38 Graco Husky d o u b l e d i a p h r a g m p u m p s . Colours are m i x e d a u t o m a t i c a l l y using t h e computer assisted mixing head enabling Joshua Wardle to s c r e e n p r i n t f a b r i c s in a n y p a t t e r n a n d any colours. The Graco air p o w e r e d Husky
WORLD PUMPS JANUARY 1995
d o u b l e d i a p h r a g m p u m p s replace reciprocating pumps (once t h o u g h to be t h e only s o l u t i o n to p u m p i n g t h e s e fairly viscous dyes). Not only do t h e Husky d i a p h r a g m p u m p s handle t h e dyes with ease, t h e high flow capability means the p u m p s are r u n n i n g c o m p a r a t i v e l y slower, i n c r e a s i n g t h e t i m e between m a i n t e n a n c e intervals and reducing mainten a n c e costs. T h e G r a c o H u s k y 3 / 4 in p l a s t i c p u m p r e p r e s e n t s a deviation from t h e i n d u s t r y stand a r d a n d the switch to d o u b l e d i a p h r a g m p u m p s from reciprocating p u m p s was a fairly m a j o r decision for J o s h u a W a r d l e to make. With a s u b s t a n t i a l l y r e d u c e d i n i t i a l c a p i t a l outlay, J o s h u a Wardle was able to c o m p l e t e the p r o j e c t w i t h o u t delay. All t h e p u m p s r e c o m m e n d e d , including six l a r g e r 1 in Husky
d o u b l e d i a p h r a g m p u m p s for t h e o v e r h e a d b u l k tanks, were s u p p l i e d by M u l t i s p r a y & Pneumatics.
Contact: Harrison Killip, Graco UK Lid, Wednesfield Road, Wolverhampton WV10 ODR, UK. Tel: + 4 4 902 351924; Fax: + 44 902 351365.
[]
Pumps aid conservation o f historic wreck
The c o n s e r v a t i o n of King Henry VIII's f a v o u r i t e w a r s h i p , t h e Mary Rose, is being carefully e n g i n e e r e d using six progressing cavity pumps manufact u r e d by Mono P u m p s Ltd. The polyethylene glycol (PEG) solution, used by scient i s t s to s t a b i l i s e w a t e r l o g g e d
PPLICATIONS
w o o d e n artefacts, is s p r a y e d c o n t i n u o u s l y o n t o the wreck. The c o n s t a n t , even flow provided by the Mono p u m p s is crucial to the project's success since e x p o s u r e to air poses the t h r e a t of physical d i s t o r t i o n due to u n c o n t r o l l e d drying. All the Mono p u m p s feature the u n i q u e 'Flexishaft' which links the drive shaft to t h e helical rotor. S c i e n t i s t s w o r k i n g on t h e m a m m o t h preservation project designed an intricate spray system with two Mono E122 p u m p s at its heart. The pumps, o p e r a t i n g in d u t y / s t a n d b y mode at speed of 279 r e v / m i n recirculate 2000 litres of PEG per minute. A large open s e t t l e m e n t t a n k feeds the PEG solutions, with a viscosity of u p to 14 cST, to t h e Mono p u m p s w h i c h pump the PEG solution t h r o u g h a filter a n d into the spray system. The spray system comprises 380 nozzles p o s i t i o n e d at one m e t r e intervals a r o u n d the Mary Rose h u l l e n s u r i n g t h a t t h e wreck's entire surface is covered by a film of preservative. the excess solution falls onto a special c a t c h m e n t tray b e n e a t h the hull which feeds the settlem e n t t a n k ready for filtering a n d re-circulation. The filtered solution is m a i n t a i n e d at t e m p e r a t u r e s of 1823°C by h e a t i n g or c o o l i n g systems using four smaller Mono p u m p s . This t e m p e r a t u r e c o n t r o l is e s s e n t i a l for t h e controlled a b s o r p t i o n or PEG into the wood cell structure. Mono P u m p s worked closely on the Mary Rose project with m e c h a n i c a l seals m a n u f a c t u r e r J o h n Crane a n d Leroy Somer, drive supplier. The wreck was raised from the The Solent, j u s t off Portsm o u t h in 1982 a n d the conserv a t i o n project, n o w involving the six Mono p u m p s , is expected to take a total of twenty years, by which time the ship's t i m b e r s will be fully preserved.
Contact: Mono Pumps I.td, PO Box 14, Martin Street, Audenshaw, Manchester, M34 5DQ, UK. Tel: + 44 61 339 9000; Fax: + 44 61 344 0727.
i
Simple and safe disinfectant production
ProMinent 'a: has developed new Bello Zon ':~; s y s t e m s for t h e p r o d u c t i o n a n d m e t e r i n g of c h l o r i n e dioxide. With t h e s e systems only sufficient chlorine dioxide is p r o d u c e d a n d dosed to the c o n s u m p t i o n p o i n t as is required at the p a r t i c u l a r time. There is no expensive stocking of the relatively u n s t a b l e chlorine dioxide. F u r t h e r safety considerations, simple handling a n d ease of servicing were the m a i n c o n s i d e r a t i o n s in t h e f u r t h e r d e v e l o p m e n t of t h i s system which has already proved itself in m a n y areas. Areas of a p p l i c a t i o n i n c l u d e • d i s i n f e c t i o n of d r i n k i n g water, • bottle cleaning a n d the treatm e n t of water v a p o u r in the milk industry, • disinfecting of process cooling water. With the new systems, the reactor, m e t e r i n g p u m p s a n d control system are m o u n t e d on a plastic console a n d wired up ready for operation. The reactor is fitted in a n enclosed h o u s i n g with a suction device. G a m m a series m e t e r i n g p u m p s are used. Precise dosing a n d c o m p r e h e n sive electronic control facilities are the m a i n objectives of this development. In practice, this m e a n s a higher degree of safety in p l a n t operation. The control of the Bello Zon systems has b e e n c o m p l e t e l y redeveloped. The system is microprocessor based a n d can be c o n t r o l l e d either using a preselected dosage q u a n t i t y or relative to a control variable. A version with a n RS232 i n t e r f a c e will be available n e x t year. The o p e r a t o r is informed of t h e a c t u a l r a t e of flow a n d i n s t a n t a n e o u s dosage a m o u n t by m e a n s of an a l p h a n u m e r i c display. This display is available as required in five languages: German, English, French, Italian a n d Spanish. Level m o n i t o r i n g of the chemicals c o n t a i n e r s is e n h a n c e d by a p r e a l a r m which gives the
o p e r a t o r early w a r n i n g of a lack of chemicals. Bello Zon systems are n o t a universal solution to all prob l e m s b u t they do cover most cases where the use of chlorine is n o t r e c o m m e n d e d due to its known byproducts (the formation of THM or chlorophenols). A higher pH (above pH 8) or t h e p r e s e n c e of a m m o n i u m (NH4 +) in water leads to a higher c o n s u m p t i o n of chlorine. Where chlorine dioxide is used the c o n s u m p t i o n of the d i s i n f e c t a n t is considerably reduced u n d e r these c o n d i t i o n s due to its different mode of reaction. It is u s e d e v e r y w h e r e in systems where high microbiological a n d ecological r e q u i r e m e n t s have to be met. The ease of use as well as the high degree of o p e r a t i n g safety of the system r e p r e s e n t s a g e n u i n e alternative to o t h e r methods.
Contact: ProMinent Dosiertechnik GmbH, Postfach 101760, D-69007 Heidelberg, Germany. Tel: + 4 9 62 21 8420; Fax: + 49 62 21 842 413.
WORLD PUMPS JANUARY 1995
[i
Sticky p r o b l e m at b o o k printers
Bookcraft ( B a t h ) Ltd in Mids o m e r Norton, UK, s p e c i a l i s e s in s h o r t run b o o k p r o d u c t i o n for t h e a c a d e m i c m a r k e t a n d prod u c e s a r o u n d 50 000 b o o k s w i t h 50 t i t l e s in an average week. A W a t s o n - M a r l o w peris t a l t i c p u m p h a s recently prov i d e d a h e l p i n g h a n d with t h e i r production. At Bookcraft, a Kolbus DA 36 c a s e - m a k i n g m a c h i n e uses an a n i m a l bone b a s e d glue at a t e m p e r a t u r e of 50°C to p r o d u c e t h e covers. Prior to t h e instalIation of the Watson-Marlow p u m p , t h e glue was s u p p l i e d to t h e c a s e - m a k e r by a progressive cavity p u m p . However, t h e comb i n a t i o n of t h e a b r a s i v e n a t u r e of t h e glue a n d t h e relatively high t e m p e r a t u r e , c a u s e d t h e r u b b e r s t a t o r to need r e g u l a r replacement. Switching to a Watson-Marlow 701FB/R fixed s p e e d p u m p to m e t e r t h e glue now e n s u r e s that the case-making machine h a s a c o n t i n u o u s s u p p l y of glue to t h e p a s t i n g rollers, so m a i n taining production rates and v i r t u a l l y e l i m i n a t i n g downtime. The 7 0 1 F B / R e m p l o y e d a t Bookcraft is fitted w i t h Neop r e n e t u b i n g a n d p r o v i d e s flow r a t e s between 50 a n d 250 1/h. The p u m p o p e r a t e s for s i x t e e n h o u r s each d a y a n d t u b e life is r e p o r t e d to be very good.
Contact: Heather Beale, Watson-Marlow Ltd, Falmouth, Cornwall TR11 4RU, UK. Tel: + 4 4 1326 370370; Fax: 44 1326 376009.
Dye m i x i n g system J o s h u a W a r d l e Ltd h a s i n s t a l l e d a new dye m i x i n g system incorp o r a t i n g 38 Graco Husky d o u b l e d i a p h r a g m p u m p s . Colours are m i x e d a u t o m a t i c a l l y using t h e computer assisted mixing head enabling Joshua Wardle to s c r e e n p r i n t f a b r i c s in a n y p a t t e r n a n d any colours. The Graco air p o w e r e d Husky
WORLD PUMPS JANUARY 1995
d o u b l e d i a p h r a g m p u m p s replace reciprocating pumps (once t h o u g h to be t h e only s o l u t i o n to p u m p i n g t h e s e fairly viscous dyes). Not only do t h e Husky d i a p h r a g m p u m p s handle t h e dyes with ease, t h e high flow capability means the p u m p s are r u n n i n g c o m p a r a t i v e l y slower, i n c r e a s i n g t h e t i m e between m a i n t e n a n c e intervals and reducing mainten a n c e costs. T h e G r a c o H u s k y 3 / 4 in p l a s t i c p u m p r e p r e s e n t s a deviation from t h e i n d u s t r y stand a r d a n d the switch to d o u b l e d i a p h r a g m p u m p s from reciprocating p u m p s was a fairly m a j o r decision for J o s h u a W a r d l e to make. With a s u b s t a n t i a l l y r e d u c e d i n i t i a l c a p i t a l outlay, J o s h u a Wardle was able to c o m p l e t e the p r o j e c t w i t h o u t delay. All t h e p u m p s r e c o m m e n d e d , including six l a r g e r 1 in Husky
d o u b l e d i a p h r a g m p u m p s for t h e o v e r h e a d b u l k tanks, were s u p p l i e d by M u l t i s p r a y & Pneumatics.
Contact: Harrison Killip, Graco UK Lid, Wednesfield Road, Wolverhampton WV10 ODR, UK. Tel: + 4 4 902 351924; Fax: + 44 902 351365.
[]
Pumps aid conservation o f historic wreck
The c o n s e r v a t i o n of King Henry VIII's f a v o u r i t e w a r s h i p , t h e Mary Rose, is being carefully e n g i n e e r e d using six progressing cavity pumps manufact u r e d by Mono P u m p s Ltd. The polyethylene glycol (PEG) solution, used by scient i s t s to s t a b i l i s e w a t e r l o g g e d
PPLICATIONS
w o o d e n artefacts, is s p r a y e d c o n t i n u o u s l y o n t o the wreck. The c o n s t a n t , even flow provided by the Mono p u m p s is crucial to the project's success since e x p o s u r e to air poses the t h r e a t of physical d i s t o r t i o n due to u n c o n t r o l l e d drying. All the Mono p u m p s feature the u n i q u e 'Flexishaft' which links the drive shaft to t h e helical rotor. S c i e n t i s t s w o r k i n g on t h e m a m m o t h preservation project designed an intricate spray system with two Mono E122 p u m p s at its heart. The pumps, o p e r a t i n g in d u t y / s t a n d b y mode at speed of 279 r e v / m i n recirculate 2000 litres of PEG per minute. A large open s e t t l e m e n t t a n k feeds the PEG solutions, with a viscosity of u p to 14 cST, to t h e Mono p u m p s w h i c h pump the PEG solution t h r o u g h a filter a n d into the spray system. The spray system comprises 380 nozzles p o s i t i o n e d at one m e t r e intervals a r o u n d the Mary Rose h u l l e n s u r i n g t h a t t h e wreck's entire surface is covered by a film of preservative. the excess solution falls onto a special c a t c h m e n t tray b e n e a t h the hull which feeds the settlem e n t t a n k ready for filtering a n d re-circulation. The filtered solution is m a i n t a i n e d at t e m p e r a t u r e s of 1823°C by h e a t i n g or c o o l i n g systems using four smaller Mono p u m p s . This t e m p e r a t u r e c o n t r o l is e s s e n t i a l for t h e controlled a b s o r p t i o n or PEG into the wood cell structure. Mono P u m p s worked closely on the Mary Rose project with m e c h a n i c a l seals m a n u f a c t u r e r J o h n Crane a n d Leroy Somer, drive supplier. The wreck was raised from the The Solent, j u s t off Portsm o u t h in 1982 a n d the conserv a t i o n project, n o w involving the six Mono p u m p s , is expected to take a total of twenty years, by which time the ship's t i m b e r s will be fully preserved.
Contact: Mono Pumps I.td, PO Box 14, Martin Street, Audenshaw, Manchester, M34 5DQ, UK. Tel: + 44 61 339 9000; Fax: + 44 61 344 0727.
i
Simple and safe disinfectant production
ProMinent 'a: has developed new Bello Zon ':~; s y s t e m s for t h e p r o d u c t i o n a n d m e t e r i n g of c h l o r i n e dioxide. With t h e s e systems only sufficient chlorine dioxide is p r o d u c e d a n d dosed to the c o n s u m p t i o n p o i n t as is required at the p a r t i c u l a r time. There is no expensive stocking of the relatively u n s t a b l e chlorine dioxide. F u r t h e r safety considerations, simple handling a n d ease of servicing were the m a i n c o n s i d e r a t i o n s in t h e f u r t h e r d e v e l o p m e n t of t h i s system which has already proved itself in m a n y areas. Areas of a p p l i c a t i o n i n c l u d e • d i s i n f e c t i o n of d r i n k i n g water, • bottle cleaning a n d the treatm e n t of water v a p o u r in the milk industry, • disinfecting of process cooling water. With the new systems, the reactor, m e t e r i n g p u m p s a n d control system are m o u n t e d on a plastic console a n d wired up ready for operation. The reactor is fitted in a n enclosed h o u s i n g with a suction device. G a m m a series m e t e r i n g p u m p s are used. Precise dosing a n d c o m p r e h e n sive electronic control facilities are the m a i n objectives of this development. In practice, this m e a n s a higher degree of safety in p l a n t operation. The control of the Bello Zon systems has b e e n c o m p l e t e l y redeveloped. The system is microprocessor based a n d can be c o n t r o l l e d either using a preselected dosage q u a n t i t y or relative to a control variable. A version with a n RS232 i n t e r f a c e will be available n e x t year. The o p e r a t o r is informed of t h e a c t u a l r a t e of flow a n d i n s t a n t a n e o u s dosage a m o u n t by m e a n s of an a l p h a n u m e r i c display. This display is available as required in five languages: German, English, French, Italian a n d Spanish. Level m o n i t o r i n g of the chemicals c o n t a i n e r s is e n h a n c e d by a p r e a l a r m which gives the
o p e r a t o r early w a r n i n g of a lack of chemicals. Bello Zon systems are n o t a universal solution to all prob l e m s b u t they do cover most cases where the use of chlorine is n o t r e c o m m e n d e d due to its known byproducts (the formation of THM or chlorophenols). A higher pH (above pH 8) or t h e p r e s e n c e of a m m o n i u m (NH4 +) in water leads to a higher c o n s u m p t i o n of chlorine. Where chlorine dioxide is used the c o n s u m p t i o n of the d i s i n f e c t a n t is considerably reduced u n d e r these c o n d i t i o n s due to its different mode of reaction. It is u s e d e v e r y w h e r e in systems where high microbiological a n d ecological r e q u i r e m e n t s have to be met. The ease of use as well as the high degree of o p e r a t i n g safety of the system r e p r e s e n t s a g e n u i n e alternative to o t h e r methods.
Contact: ProMinent Dosiertechnik GmbH, Postfach 101760, D-69007 Heidelberg, Germany. Tel: + 4 9 62 21 8420; Fax: + 49 62 21 842 413.
WORLD PUMPS JANUARY 1995