N E W M A C H I N E R Y AND E Q U I P M E N T

F M B - T Y P E M U L T I S T A G E F I L T E R S W I T H A P A P E R

B A N D F O R E F F I C I E N T C L E A N I N G O F

C O O L A N T S - L U B R I C A N T S

M. y a . M e s h e n g i s s e r , G . G . K o t l y a r o v , a n d A . A . N a k o n e c h n y i

UDC 66. 065.3

In the cold mil l ing of me ta l s a cooling and lubr icat ing fluid (CLF) is supplied to the zone of contact between the tool and the m a t e r i a l which e l imina tes the heat and reduces the f r ic t ion coeff icient . During rec i rcu la t ion the C L F gets qnickly contaminated by ab ra s ive s , shavings, sca les , and other products . It has been shown in [1, 2] that the quality of the su r face t r ea ted depends to a la rge extent on the pur i ty of the CLF. The s e t t l e r s , s ieves , and magnet ic s e p a r a t o r s used to r emove mechanica l impur i t i e s f r o m CLF a re not sufficient to provide the des i r ed degree of purif icat ion. An FMB-type mul t i s tage f i l ter with a pape r band has been designed at the UkrNI lkh immash [3] for the pur i f icat ion of CLF (Fig. l a ) .

Compared with the usual s ing le - s t age band f i l te rs , the FMB f i l t e r s p o s s e s s a number of advantages: a l a r g e r f i l te r ing sur face , h igher productivi ty, a lower building ma te r i a l content, and sma l l s ize . The t ime requi red for the r ep l acemen t of a spent pape r band is only 15-20 see . The FMB f i l ter is based on the design of the FPAKM f i l t e r p r e s s [4] (Fig. lb), with hor izonta l mul t i s tage a r r a n g e m e n t of the f i l t e r p la tes between the top end plate 2 and the bot tom end plate 5. The support ing plate 6 c a r r i e s the m e c h a n i s m 7 for the tightening of the f i l t e r p la tes . The s c r e e n 3 in loop f o r m p a s s e s in a z igzag between the p la tes and is moved by the m e c h a n i s m 1. Between the b ranches of the s c r e e n ro i l s of f i l t e r pape r 4 a re supplied to each plate ,

Fig. 1.

4

Filtrate outlet

b

FMB f i l ter : a) ex te rna l view; b) scheme.

T rans l a t ed f r o m Khimicheskoe i Neftyanoe Mashinost roenie , No. 9, p. 4, Sep tember , 1974.

�9 1975 Plenum Publishing Corporation, 227 West 17th Street, New York, N. Y. 10011. No part o f this publication may be reproduced, stored in a retrieval system, or transmitted, h~ any form or by any means, electronic, mechanical, photoeopying, microfilming, recording or otherwise, without written permission o f the publisher. A eopy o f this article is available from the publisher for $15.00.

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The FMB fi l ter operates as follows. The f i l ter is switched on and the tightening mechanism tightens the f i l ter plates. The dir ty CLF passes through the collector , and f i l ters under the p re s su re of the supply pump through the f i l t e r and the sc reen enters the chambers thus formed. The fi l trate leaves the f i l ter f rom the draining chamber and through the appropriate col lector . The mechanical impuri t ies remain on the paper surface . As: the mechanical impuri t ies on the paper accumulate, the fi l tering p r e s s u r e in- c r e a s e s . When the maximum permiss ib le p r e s su re is reached the supply of CLF is interrupted and com- p r e s sed a i r is supplied to dra in the liquid f rom the fi l tering chambers . When this operat ion is finished, the tightening m e c h a n i s m re leases the plates and the band drive shifts the used paper f rom the space be- tween the plates and f resh paper is supplied into the space between the plates f rom the paper rol ls . A new fi l ter ing cycle then s ta r t s . The operat ion of the f i l ter is fully automated. The maintenance man has 0nly to replace the paper rol ls , which needs to be done every 5-10 days.

T e c h n i c a l D a t a f o r t h e F M B F i l t e r s

Fi l ter ing surface in m 2 . . . . . . . . . . . . . . . . . . . . Maximum fi l tering p re s su re in k g / c m 2 . . . . . . . . . Band width in m m . . . . . . . . . . . . . . . . . . . . . . . Gap between the plates in mm . . . . . . . . . . . . . . . Power consumption of the e lec t r ic motors in kW:

for the tightening mechanism . . . . . . . . . . . . . . . 5.5 5.5 6.4 for the sc reen movement . . . . . . . . . . . . . . . . . . 0.6

Dimensions in mm. length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2385 2700 3200 width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1795 1775 1950 height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1750 2650 3000

Weight in kg . . . . . . . . . . . . . . . . . . . . . . . . . . . 4450 5565 7500

FMB-5 FMB-10 FMB-20

5 t0 20 6.0 8OO 25

The FlVIB f i l t e r s are now available in three dimensions. They are produced by the , P r o g r e s s , chemi- cal engineering plant at Berdichev. These mult istage f i l ters can be applied successful ly for the cleaning of emulsions used on cold roll ing mills for steel sheet and milling lines in engineering plants, of the soda solution used in grinding, and of aqueous solutions of surfactants and minera l oil. The f i l ters usually work with type A cotton paper and type B viscose paper, manufactured by the Shigonsk paper mill. Paper A r e - moves par t ic les down to 20-30 um and paper B down to 30-50 pm, Approximately 40,000 rubles per annum can be saved by using a single FMB fi l ter for the purification of CLF. Thei r use increases the quality of the sur face treated and the productivity. The design of the FMB fi l ters represen ts a new and progress ive solution in filter design and has been patented in many countr ies .

1. 2.

3.

4.

L I T E R A T U R E C I T E D

,Coolants : What happens when the chips are out ~ n Metal-working Production, 114, No. 3, 26 (1970). [. P. Woolach, wRecent advancements in the fi l trat ion of rell coolants for cold rolling opera t ions ," I ron and Steel Engineer, 43, No. 8, 117 (1966). I. S. Ermakov, M. Ya. Me-'-shengisser, G. M. Kochkin, F. N. Shakhov, G. G. Kotlyarov, D. D. Shelyubskii, V. P. Sobbatovskii, and V. A. Egorov, Author ' s Cert if icate No. 337141, Otkrytiya, Izobreteniya, Promyshlennye Obraztsy, Tovarnye Znaki, No. 15 (1972). I. S. Ermakov, M. Ya. Meshengisser , G. M. Kochkin, and F. N. Shakhov, Author, s Cert if icate No, 148018, Izobreteniya, Promyshlennye Obraztsy, Tovarnye Znaki, No. 23 (1966).

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