SU1577805A1 - Bag press-filter - Google Patents

Abstract

The invention relates to filtration, can be used for separating suspensions, and makes it possible to increase work efficiency. The bag filter press contains a filter sleeve 3 in contact with the support surface 2 of the housing 1, made in the form of a horizontal tensioned loop, having a straight perforated lower section 14, positioned behind it in the course of moving the sludge being processed, a curvilinear ascending perforated section 15, A straight upper section 16, which interacts through a supporting membrane with crimping rollers 6, mounted on an endless drive element 7, guides 10, 11 and means 12 for filter removal spending. The supporting surface 2 of the housing 1 is provided with a downward curvilinear section 17 with through shaped openings 22, 23, forming a closed loop 13 with the rising 15 and straight 14, 16 sections. The filter sleeve 3 is placed on the supporting surface 2 of the housing 1 in the form of a spiral, and the ends 24, 25 of the sleeve 3 are passed through the through holes 22, 23 of the housing 1. 7 Cp. f-ly, 6 ill.

Description

(21) 4416424 / 29-26

(22) 04/26/88

(46) 07.15.90. Bul No. 26

(71) Design office for the development of special equipment for water treatment plants and sewage treatment plants "Vodmashtehnnik

(72) C. F. Shcherbina, V.V. Yermakov and G.V. Rzhskikh

(53) 66.067.4 (088.8)

(56) USSR Copyright Certificate No. 1168273, cl. B 01 D 29/10, 1984.

(54) SLEEVE FILTER PRESS

(57) The invention relates to filtration, can be used for separating suspensions, and makes it possible to increase work efficiency. The bag filter press contains a filter sleeve 3 in contact with the support surface 2 of the housing 1, made in the form of a horizontally stretched loop, having a straight perforated lower portion .14 located behind it in the course of moving the sludge being processed, a curved ascending perforated portion 15, the rectilinear upper portion 16, interacting through a supporting membrane with crimping rollers 6, mounted on an endless drive element 7, guides 10, 11, and means 12 retraction filtrate. The supporting surface 2 of the housing 1 is provided with a downward curvilinear section 17 with through shaped holes 22, 23 forming a closed loop 13 with the rising 15 and straight 14, 16 sections. The filter sleeve 3 is placed on the supporting surface 2 of the housing 1 in the form of a spiral, and the ends 24, 25 of the sleeve 3 are passed through the through holes 22, 23 of the housing 1. 7 h. item f-ly, 6 ill.

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This invention relates to filtration and can be used in the chemical and other industries for separating suspensions.

The purpose of the invention is to increase work efficiency.

FIG. 1 shows a bag filter press; general view; in fig. 2 - the same, option; in fig. 3 shows section A-A in FIG. 1 and 2; in fig. 4 is a view B in FIG. 2; in fig. 5 shows a section B-B in FIG. four; in fig. 6 - section G-Y in FIG. four.

The bag filter press comprises a body 1 with a shaped support surface 2 of a sheet on which the filter sleeve 3 is located with its squeezing part 4 supported by an elastic membrane 5 in the form of a tape, squeezing rollers 6 fixed on an infinitely flexible drive element 7, horizontal rolls 8 and 9, covered by an endless flexible drive element 7, for example a chain, and the guides 10 and 11 of the rollers 6. Under the body 1, means 12 for removal of the filtrate are installed. The inner working support surface 2 of the housing 1 is made in the form of a closed loop 13, which is elongated in the horizontal direction and has a straight perforated lower section 14 located successively behind it in the pressing part 4 of the sleeve 3, the curvilinear ascending section 15 and the rectilinear upper portion 16, and is provided with another downward curvilinear portion 17.

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The lower and upper portions 14 and 16 are mounted horizontally or obliquely to the longitudinal axis of the filter and are connected to each other through curvilinear portions 15 and 17. In this case, the curvilinear downward portion 17 is set coaxially with the upward portion 15. The portions 15 and 17 are arranged by elements 18 and 19, which are directed towards the periphery of the housing 1, are opposite to each other. The elements 18 and 19 of the concavity of both curvilinear sections 16 and 17 are made in the form of semicircles of the same radius.

According to the embodiment, the elements 18 and 19 of the concavities of the sections 15 and 17 are made in the form of arcs of semi-circles of unequal radii, while the element 18 of the concavity of the section 15 has an arc of a circle made smaller than the radius of the arc of the semi-circle of the element 19 of the concavity of the section 17. Pr linear section 14 and lower half of the concave sections 15 and 17 of the supporting surface 2, located under the longitudinal axis of the filter of the inner surface 2 of the housing 1, made in the form of a perforated sheet 20 or mesh.

The upper halves of the curved sections 15 and 17, located above the longitudinal axis of the filter, and the rectilinear upper section 16 are made of a continuous smooth sheet 21. On the downward section 17 of the surface 2 there are two through-shaped holes 22 and 23 that are offset vertically and horizontally relative to each other, wherein the opening 22 is lower and the opening 23 upper.

The filter sleeve 3 has a pressing part 4, the loading and unloading ends 24 and 25, respectively.

The filter sleeve 3 is located on the figure-out part 4 on the shaped support surface 2 of the housing 1, made in the form of a closed loop 13, stretched horizontally, between the through shaped holes 22, 23 in the form of a horizontal helix 26, the axis of which is located across the longitudinal axis filter and has at least two turns 27 and 28 in each straight-line region 14, 16 and upstream region 15.

The sleeve 3 of the pressing part 4 is in contact with the supporting surface 2 of the hinges 13 of the housing 1. In this case, the loading end 24 of the sleeve 3 can be passed from the inner support surface 2 of the housing 1 to the outside through one of the through shaped holes 22 or 23, and the discharge end 25 through another.

In both embodiments, through the lower through hole 22, the loading end 24 of the filtering sleeve 3 is drawn,

and through the upper opening 23 - discharge end 25.

An intermediate protective sleeve 29 or 30, respectively, which is made of an elastic material, such as rubber, is installed in the through shaped holes 22 and 23 between the housing 1 and the corresponding end 24 and 25 of the sleeve 3. Each cuff 29 and 30 has, in cross section, lead-in bevelled or rounded edges (elongated edges 31 and 32, which are made from the side in contact with the cuff 29 or 30 of the sleeve 3, having ends 24 and 25.

The filter sleeve 3 is placed on the extraction part 4 in the form of a spiral 26, which lies horizontally with its axis and is wound on the inner bearing surface 2 of the housing 1 with gaps 33 between adjacent turns 27 and 28. The membrane 5 supports the extraction part 4 of the sleeve 3 on

0 of the inner working support surface 2 of the housing 1 and fixed to the housing 1 by clamps 34-36 with fastening elements 37, for example screws. In this case, the supporting sleeve 3 membrane 5 by

The 5 clamps 36 and fasteners 37 are additionally secured in the gaps 33 between adjacent turns 27, 28 of the helix 26. By way of embodiment, the filter sleeve 3 is mounted on both straight coils 27, 28 of the helix 26

0 sections 14 and 16 of the inner bearing surface 2 of the housing 1 are inclined with a bottom-up lift from the lower through-hole 22 as the treated sludge in the sleeve 3 moves relative to the inner supporting surface 2 of the core 5 of the push 1.

The housing 1 is provided with two removable lables 38 and 39. The trays 38 and 39 are placed on the periphery of the housing 1, with one tray 38 being the lower one and placed under the bottom through-slotted hole 22, and the other tray 39 being the upper one and the upper through hole 23.

The bottom tray 38 is made with a perforated bottom 40 in the form of a downward oval directed toward the body 1, and the loading end 24 of the sleeve 3 is placed on it, which is connected to the means 41 for supplying the suspension to dehydration.

The bottom 42 of the top tray 39 is tilted from

0 holes 23 downward from housing 1. At the bottom 42 of the upper tray 39, the discharge end 25 of sleeve 3 is placed with a downward slope from housing 1. The lower and upper removable trays 38 and 39 are fixed to the housing 1 by means of fastening elements 43 and 44. Under the top The tray 39 with the discharge end 25 of the sleeve 3 located on it is provided with means 45 for removing sludge, i.e., the finished final dehydrated product.

The rolls 8 and 9 are installed horizontally inside the housing 1 and are covered by an endless flexible drive element 7, for example, a chain on which the squeezing rollers 6 are located and reinforced with a certain pitch 6 and are connected horizontally with their guides 10 and 11, which are connected to the housing 1 and have a shape corresponding to the sections 14 and 16 of the inner support surface 2 of the housing 1.

The rolls 8 and 9 also serve as guides for the axles 46 of the rollers 6 on curved sections 15 and 17.

The rolls 8 and 9 can be made of the same or unequal size in diameters, but according to an embodiment, the HAND-HELD filter press works as follows.

The suspension from the supply means 41 continuously flows through the loading end 24 into the extraction part 4 of the filter sleeve 3 through the coils 27 and 28 of the helix 26, in which it moves, gradually thickening, to the discharge end 25 and is discharged into the final dehydrated means 45 product.

The process of dewatering the processed product takes place by removing the filtrate through the walls of the walls of the sleeve 3. At the upper part, the coils 27 and 28 are in contact with the rectilinear upper section 9 necessarily has a larger diameter. ° com 16 and the upper halves of the curvature. The filter sleeve 3 is made of elastic sections 15 and 17 of the supporting surface 2 of the closed loop 13 of the housing 1 located above the longitudinal axis of the filter.

The filtrate is also removed through a tape made of elastic waterproof material, for example rubber, and placed above the perforated sheet 20 and the lower part of the turns 27 and 28 of the helix 26 of the pressing part 4 of the sleeve 3 located on it. The upper part 48 of the membrane 5 is made of elastic hydrophilic material or hydrophobic in the form of a grid and placed under the continuous smooth sheet 21 of the supporting surface 2 with the upper parts of the coils 27 and 28 of the helix 26 of the pressing part 4 of the sleeve 3 located on it. The lower and upper parts 47 and 48 are supported

hydrophilic material or hydrophobic in the form of a grid.

Membrane 5, supporting the squeeze

The part 4 of the sleeve 3, which is in contact with the support - 20 to the town of the wall of the upper part 48 of the membrane 5. The surface 2 is made combined as well as through the

bathroom from the lower and upper parts of the 48.internal walls of the sleeve 3 layer of sediment,

The lower part 47 of the membrane 5 plays the role of a filtering medium. With an increase in the thickness of the sediment layer, the filtration rate decreases. The optimal filtering speed is maintained by periodically shifting the sediment layer in the form of thickened sludge from the walls of the sleeve 3 by continuously rolling around the stationary pressing part 4 of the sleeve 3 and the supporting membrane 5 of the pressing rollers 6. With the force effect of each pressing roller 6 on the elastic membrane 5 and pressing 4 sleeves 3 with sediment wet swollen cloth sleeves 3 and membranes 5

the living membrane 5 is connected one to the other, OR is deformed, as a result of which a "lap or butt" occurs. Supports the active squeezing of the fluid, which the membrane filter allows to move 5 from the areas with high pressure to

kav 3 with a dehydrated sludge in the zone with a lower pressure, i.e. from the zone

The pressing part 4 in the cross section has the shape of a loading end 24 of the sleeve along the intraoral tube, the larger transverse axis of the bosom surface of the sleeve 3 to the area of the hinge takes a horizontal position. 40 loads through the discharge end 25. At the same time

in turns 27 and 28 of the helix 26 of the pressing part 4 of the sleeve 3, the sediment repeatedly shifts both relative to the internal surface of the partitions of the sleeve 3 and relative to its internal layers, continuously changing its shape, which contributes to the intensification of the dewatering process and the efficiency of using the filter press. part 4 of the sleeve 3 is carried out by shifting the sludge by moving the squeezing rollers 6, while the sludge is shifted along the movement of the rollers 6. After the roller 6 passes through the working contact pad, which continuously moves along with the movement of the rank on the side of the lower through-55 of each roller 6 (continuously running through the mouth of the hole 22 and passed through on), the pressing part 4 of the sleeve 3 and the upper loading end 24 along the movement sludge in the pressing part 4 sleeves.

In the state compressed by the roller 6, the filter sleeve 3 lifts the solid form along the roller 6 forming. The sleeve 3 may be made with a constant or variable flow cross-section that gradually decreases in the direction of the discharge end 25.

The lower and upper parts of the coils 27, 28 of the spiral 26 are installed in the regions 14 and 16 horizontally or inclined to the longitudinal axis of the filter. According to one embodiment, the sleeve 3 is mounted on both straight lines 27 and 28 of the helix 26 on the straight sections 14 and 16 of the inner working support surface 2 of the housing 1 with inclination from bottom to top successively, 45

50

Part 48 of the membrane 5 re-absorbs the fluid, which, after saturation, penetrates through the wall of the wall of the sleeve 3 and drains the hose-filter filter press works as follows.

The suspension from the supply means 41 continuously flows through the loading end 24 into the extraction part 4 of the filter sleeve 3 through the coils 27 and 28 of the helix 26, in which it moves, gradually thickening, to the discharge end 25 and is discharged into the final dehydrated means 45 product.

The process of dewatering the processed product is carried out by removing the filtrate through the walls of the walls of the sleeve 3. At the top, the coils 27 and 28 are in contact with the rectilinear top part 2 of the closed loop 13 of the housing 1 located above the longitudinal axis of the filter.

The filtrate is also removed through the wall of the upper part 48 of the membrane 5, as well as through the

thirty

55

45

55

50

in turns 27 and 28 of the helix 26 of the pressing part 4 of the sleeve 3, the sediment repeatedly shifts both relative to the internal surface of the partitions of the sleeve 3 and relative to its internal layers, continuously changing its shape, which contributes to the intensification of the dewatering process and the efficiency of using the filter press. part 4 of the sleeve 3 is carried out by shifting the sludge by moving the squeezing rollers 6, while the sludge is shifted along the movement of the rollers 6. After the roller 6 passes through the working contact pad, which continuously moves together with the movement of each roller 6 (continuously traveling wave), the pressing part 4 of the sleeve 3 and the upper

Part 48 of the membrane 5 again absorbs the liquid, which, after saturation, penetrates through the wall of the wall of the sleeve 3 and drains from the bottom surface of the sleeve into the filtrate removal means 12.

The liquid merges from the lower part of the coils 27 and 28 of the spiral 26 through the perforated lower section 14 and the perforated sheet 20 of the lower part of the curvilinear sections 15 and 17 of the supporting working surface 2 of the housing 1, and from the upper part through the permeable upper part 48 of the membrane 5, but at the same time, the liquid first gets on the outer side of the lower part 47 of the membrane 5, which is made of waterproof material and acts as a screen, and then on the outer side of the lower part 47 - into the filtrate removal means 12. Then the cycle repeats.

Claims (8)

1. A bag filter press comprising a filter sleeve in contact with the bearing surface of the body, made in the form of a horizontally stretched loop, having a straight perforated lower portion, positioned behind it in the course of moving the sludge being processed, a curvilinear ascending perforated portion, straight top section, and interacting through a supporting membrane with crimp rollers mounted on an endless flexible drive element, roller guides, means from filtrate water, characterized in that, in order to increase the efficiency of operation, the bearing surface of the body is provided with a downward curvilinear section with through-shaped shaped holes, forming a closed loop with the rising curvilinear and straight-line sections, the filter sleeve is placed on the supporting surface ten   JLOJUU. br uMmpam precipitation figure 1 the helix body is in the form of a spiral, and the ends of the sleeve are passed through the through holes of the body. 2. The filter press according to Claim. 1, characterized in that the curvilinear portions of the supporting surface of the body are made in the form of semicircles of the same radius. 3. The filter press according to claim 1, characterized in that the curved portions of the supporting surface of the housing are in the form of arcs semicircles of unequal radii, while the radius of the ascending section is smaller than the radius of the descending area. 4. The filter press according to claim 1, characterized in that the lower part of the downward curvilinear portion of the bearing surface of the housing is perforated. 5. The filter press according to claim 1, characterized in that the through shaped holes in the housing are vertically offset relative to each other, while the loading end of the filter sleeve is passed through the bottom opening, and the discharge end through the top opening. 6. The filter press according to Claim. 1, characterized in that the bearing surface of the housing is provided with a supporting membrane fixed between the turns of the helix of the sleeve. 7. Filter press on PP. 1 and 3, characterized in that the filter sleeve is mounted obliquely with the lift upwards along the movement of the treated sludge. 0 8. Filter press on PP. 1 and 5, characterized in that the casing is provided with removable trays, one of which is placed under the lower shaped opening, and the other - under the upper, while the loading end of the sleeve is placed on the lower tray, and the outgoing end - on the upper one and installed with a downward slope from the case. 46 2, Direction sediment movement and 321535 33 253612. Fig. 3 12 13 2о 4J 38 22 J7 40 2Q The filtrate of Fig 2 View 6 4 / -1 24 38 40 t 20 72 VD / g. 4 in-in 29 R 2139 I A / S7 /// S