CN220214202U - Shunting type filter cloth flushing structure of rotary table filter - Google Patents

Abstract

The utility model discloses a split-flow type filter cloth flushing structure of a rotary table filter, belongs to a vacuum filter structure of solid-liquid separation equipment, and particularly relates to a rotary table vacuum filter cloth flushing structure; the utility model provides a split-flow type filter cloth flushing structure of a rotary table filter, which adopts three rows of spray heads with different spray angles and different nozzle equivalent diameters to flush, increases the amount of recycled flushing liquid passing through the filter cloth, and forms a relatively closed flushing area by a flushing platform with a full-length observation port and a balance port arranged in front, a rear maintenance walkway and a splash-proof component, wherein flushing liquid containing more solid particles corresponds to the spray head flushing row with the large nozzle equivalent diameter, and recycled flushing liquid passing through the filter cloth corresponds to the spray head flushing row with the small nozzle equivalent diameter; the utility model achieves the aims of improving the regeneration performance of filter cloth, easily wearing a spray head, being inconvenient to check and adjust and leaking a flushing area without adding washing liquid pretreatment equipment.

Description

Shunting type filter cloth flushing structure of rotary table filter

Technical Field

The utility model belongs to a vacuum filter structure of solid-liquid separation equipment, in particular to a rotary table vacuum filter cloth flushing structure.

Background

At present, a rotary table filter is widely applied to industries such as phosphorus compound fertilizers, new energy batteries and the like for filtering and separating phosphoric acid liquid, the conventional rotary table filter is generally provided with two rows of high-pressure flushing to flush and regenerate filter cloth and then feed and filter, wherein the included angle between the flushing direction of the front row and the filter cloth is smaller for cutting a residue layer on the surface of the filter cloth after spiral discharging, the included angle between the flushing direction of the rear row and the filter cloth is larger for flushing woven holes of the filter cloth, most of front flushing liquid entrains residues to enter a wet residue hopper, only a small amount of front flushing liquid passes through the filter cloth, about one third of water of rear flushing liquid passes through the filter cloth, and the flushing water passing through the filter cloth needs to be mixed with a large amount of process water for recycling; in actual operation, the spray head is easy to wear, is blocked, is inconvenient to check and adjust, is easy to splash in a flushing area, is poor in operating environment such as air bubbling and the like, the filter cloth regeneration effect directly influences the filtering performance and the filter cloth loss cost, and the maintenance workload is increased by frequently replacing the spray head; considering that the process water balance, i.e. the sewage is not discharged, and the normal process water is not treated by solid phase particles and returns to the filter to be used as flushing liquid, the method is a main reason that the spray head is easy to wear and block, and therefore, a filter is added in a pipeline before flushing or a sedimentation tank is arranged outside a filtering factory to reduce the solid phase particles in the process water; there is a need for a new filter cloth flushing structure that improves filter cloth regeneration performance, nozzle wear, clogging check adjustment inconvenience, and flushing area leakage problems without adding a cleaning solution pretreatment device.

Disclosure of Invention

In order to solve the problems of easy abrasion, blockage, inconvenient inspection and adjustment and leakage of a flushing area of a filter cloth flushing structure of a rotary table filter in the prior art, the utility model provides a split-flow type filter cloth flushing structure of the rotary table filter, which adopts three rows of spray heads with different spray angles and different equivalent diameters of spray nozzles to flush, so that the amount of recycled flushing liquid passing through the filter cloth is increased, a flushing platform with a full-length observation port and a balance port at the front part, a rear-end overhauling walkway and a splash-proof assembly form a relatively closed flushing area, flushing liquid containing more solid particles corresponds to a spray head flushing row with a large equivalent diameter of spray nozzle, and recycled flushing liquid passing through the filter cloth corresponds to a spray head flushing row with a small equivalent diameter of spray nozzle; the utility model achieves the aims of improving the regeneration performance of filter cloth, easily wearing a spray head, being inconvenient to check and adjust and leaking a flushing area without adding washing liquid pretreatment equipment.

The technical scheme adopted for solving the technical problems is as follows: a split-flow type filter cloth flushing structure of a rotary table filter comprises a flushing platform, an inner arc hanging plate, an inner bracket, a pipe bracket, a filter cloth flushing row, a transition flushing row, a slag cutting flushing row, a splash-proof assembly, an overhaul pavement and an outer supporting leg; the flushing platform consists of a platform frame, a platform front hanging plate, a bottom protection plate, a surface pattern steel plate, an upper movable cover plate, a lower movable cover plate and a balance air port, wherein the bottom protection plate is paved on the lower plane of the platform frame, the surface pattern steel plate paved on the upper plane of the platform frame also serves as a walking path for maintenance, the bottom protection plate and the surface pattern steel plate close to the rear side of the flushing platform, namely the flushing side, are provided with a plurality of rows of square holes corresponding to the whole length of the flushing row, as observation ports, the lower movable cover plate is placed on the square holes of the bottom protection plate, the upper movable cover plate is placed on the square holes of the surface pattern steel, the upper end of the platform front hanging plate is fixed on the front side surface of the platform frame, the lower end of the platform front hanging plate is connected with a filter cloth surface, and the balance air port penetrates through the surface pattern steel plate and the bottom protection plate to be arranged in front of the upper movable cover plate of the flushing platform; the pipe bracket consists of an L-shaped bracket, a pipe lap welding plate and a fastener, wherein the two pipe brackets are spanned between the flushing platform and the overhauling walkway, waist-shaped holes are formed in the vertical face of the L-shaped bracket, and the pipe lap welding plate is fixed on the L-shaped bracket through the fastener and is welded with a supported pipe after the component is installed in place; the filter cloth flushing row, the transition flushing row and the slag cutting flushing row are composed of a main pipe, a pipe joint, a valve, a branch pipe and a spray head, and are sequentially as follows according to the flushing sequence: the spray nozzles of the first row of slag cutting and flushing rows, the second row of transition flushing rows and the third row of filter cloth flushing rows are welded at row holes on main pipes of the rows, each pipe joint is connected with a branch pipe, the outlets of the branch pipes are connected with spray heads, the spray heads of the front row and the back row are arranged in a staggered manner, the spray angles of the rows are different from the included angle of the filter cloth surfaces, the included angle gamma of the filter cloth flushing rows is larger than the included angle beta of the transition flushing rows and larger than the included angle alpha of the slag cutting and flushing rows, and when the spray heads with the same fan-shaped spray angle are adopted, the spray ranges of adjacent spray heads of the same row are required to be connected or overlapped in a small amount to form linear full-coverage flushing, so that the spray head liquid outlet with the small included angle of the filter cloth surfaces is in proportion to the height h of the filter cloth surfaces, the equivalent diameter phi of spray heads is inversely proportional to the included angle phi, namely the equivalent diameter phi of spray heads of the filter cloth flushing rows is the minimum; the splash-proof assembly consists of a hanging plate mounting rod, a pavement hanging plate, a platform rear hanging plate and a pipe penetrating splash-proof plate, the splash-proof assembly is mounted between the flushing platform and the maintenance pavement, the upper end of the pavement hanging plate is clamped on the side edge of the maintenance pavement by the hanging plate mounting rod, the lower end of the pavement hanging plate is hung on the contact filtering cloth surface, the platform rear hanging plate is clamped on the side edge of the flushing platform by the hanging plate mounting rod, the lower end of the platform rear hanging plate is hung on the position above a spray head of the slag cutting flushing row, the pipe penetrating splash-proof plate is flexible plate, two ends of the pipe penetrating splash-proof plate are clamped between the flushing platform and the side edge of the maintenance pavement by the hanging plate mounting rod, holes corresponding to the diameter d positions of three rows of flushing row branch pipes are formed in the pipe penetrating splash-proof plate, and split lines are arranged around the holes to allow branch pipes provided with the spray heads to penetrate; the overhauling pavement consists of a pavement frame, a pavement grating and handrails, wherein the pavement grating is paved on the pavement frame, and the handrails are arranged on non-flushing side beams of the pavement frame; the inner arc hanging plate is arranged below the flushing platform and is attached to the inner cofferdam of the filter disc, the inner support is arranged on the inner platform surface of the filter to support the flushing platform and the inner end of the overhaul pavement, the outer end of the flushing platform is arranged on the upper edge opening of the wet slag bucket edge wallboard, one corner of the outer end of the overhaul pavement is connected with the outer end of the flushing platform to support, and the other corner is supported by the outer supporting leg arranged on the outer foundation edge surface.

The mechanism uses three rows of flushing penetrating filter cloth liquid as the last row of filter cloth flushing liquid and the front row of supplementing liquid, the flushing times are increased compared with the original two rows of flushing structures under the condition of not increasing the process water consumption so as to ensure the regeneration performance of the filter cloth, and the equivalent caliber of a spray head of the first row of slag cutting flushing row is increased so as to adapt to flushing liquid containing more solid particles, thereby prolonging the overhaul and maintenance period; the upper cover surface of the flushing area consists of a bottom protection plate of the flushing platform, a lower movable cover plate and a pipe penetrating splash-proof plate of the splash-proof assembly, the lower plane of the flushing area consists of a cloth filtering surface and a wet slag hopper inclined bottom plate, the periphery of the flushing area consists of an inner arc hanging plate, an inner cofferdam attached to the filter disc, a walk hanging plate of the splash-proof assembly, a wet slag hopper side wall plate and a front platform hanging plate of the flushing platform, a closed fan-shaped space is formed by the inner pressure formed by high-pressure flushing of the flushing area, and the inner pressure is released by a balance air port of the flushing platform and is blocked by a rear platform hanging plate of the splash-proof assembly so as to reduce the splash liquid below the pipe penetrating splash-proof plate.

The split-type filter cloth flushing structure of the rotary table filter can increase flushing times to improve filter cloth regeneration performance by adopting split-flow internal circulation filter cloth flushing liquid, and also provides an observation port and a double-channel for conveniently adjusting and maintaining a spray head, and combines a closed flushing area to improve the operation environment, thereby achieving the purposes of improving the easily worn spray head, blocking, checking and adjusting inconvenience and leakage of the flushing area of the original flushing structure.

Drawings

The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.

FIG. 1 is a lower view of a split-flow filter cloth flushing structure of a rotary table filter;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a partial view taken from B in FIG. 1;

FIG. 4 is a block diagram of the member 4 of FIG. 1;

FIG. 5 is an aperture diagram of the member 84 of FIG. 2;

the wet slag bucket, II, filter pan, III, inner platform, IV, outer foundation, 1, flush platform, 2, inner arc deck, 3, inner bracket, 4, pipe bracket, 5, filter cloth flush, 6, transition flush, 7, slag flush, 8, splash guard assembly, 9, service walkway, 10, outer leg, 11, platform frame, 12, deck front deck, 13, bottom guard, 14, deck, 16, lower deck, 17, balance port, 41, L bracket, 42, pipe splice plate, 43, fastener, 51, filter cloth main pipe, 52, pipe joint, 53, valve, 54, filter cloth main pipe, 55, spray head, 61, transition main pipe, 62, transition main pipe, 71, slag cutting main pipe, 72, slag cutting main pipe, 81, deck mounting bar, 82, walkway deck, 83, deck rear deck, 84, through pipe deck, 91, splash guard, 92, railing, 93.

Detailed Description

The split-type filter cloth flushing structure of the rotary table filter comprises a flushing platform 1, an inner arc hanging plate 2, an inner support 3, a pipe support 4, a filter cloth flushing row 5, a transition flushing row 6, a slag cutting flushing row 7, a splash-proof assembly 8, an overhaul pavement 9 and an outer supporting leg 10, wherein the flushing platform 1 comprises a platform frame 11, a platform front hanging plate 12, a bottom protection plate 13, a surface pattern steel plate 14, an upper movable cover plate 15, a lower movable cover plate 16 and a balance air port 17, the bottom protection plate 13 is paved on the lower surface of the platform frame 11, the surface pattern steel plate 14 is paved on the upper surface, the front side surface is provided with the platform front hanging plate 12, three square openings corresponding to the flushing row are formed on the bottom protection plate 13 and the surface pattern steel plate 14 at the rear side of the platform frame 11, three lower movable cover plates 16 are covered on the square openings of the bottom protection plate 13, three upper movable cover plates 15 are covered on the square openings of the surface pattern steel plate 14, and round hole welding balance air ports 17 are formed on the bottom protection plate 13 and the corresponding surface pattern steel plate 14 at the upper part of the wet slag hopper I; the angle iron of the inner arc hanging plate 2 is arranged below the flushing platform 1 and is attached to the cofferdam in the filter disc II; the inner support 3 supports the inner ends of the flushing platform 1 and the overhauling walkway 9 on an inner platform III of the filter; the pipe bracket 4 consists of an L-shaped bracket 41, a pipe lap welding plate 42 and a fastener 43, wherein the L-shaped bracket 41 spans over the flushing platform 1 and the overhauling pavement 9, a waist-shaped hole is formed in the vertical face of the L-shaped bracket 41, and the pipe lap welding plate 42 is fixed on the L-shaped bracket 41 by the fastener 43; the third row of filter cloth flushing rows 5 consists of a filter cloth row main pipe 51, pipe joints 52, valves 53, filter cloth row branch pipes 54 and spray heads 55, the pipe joints 52 are welded at row holes on the filter cloth row main pipe 51, each pipe joint 52 is connected with a valve 53 and then connected with the filter cloth row branch pipe 54, and an outlet of each filter cloth row branch pipe 54 is connected with the spray head 55; the transition flushing row 6 of the second row consists of a transition row main pipe 61, a pipe joint 52, a valve 53, a transition row branch pipe 62 and a spray head 55; the first row of slag cutting flushing rows 7 consists of a slag cutting row main pipe 71, a pipe joint 52, a valve 53, a slag cutting row branch pipe 72 and a spray head 55; the structures of the slag cutting flushing row 7 and the transition flushing row 6 are the same as those of the filter cloth flushing row 5, the spray angles of spray heads 55 of the three flushing rows are different from the included angle of the filter cloth surface, the included angle gamma DEG of the filter cloth flushing row 5 is larger than the included angle beta DEG of the transition flushing row 6, the included angle alpha DEG of the slag cutting flushing row 7 is larger than the included angle beta DEG of the transition flushing row 6, the liquid outlet of each row of spray heads 55 is in direct proportion to the height h of the filter cloth surface from the included angle, the equivalent diameter phi of the spray nozzles of each row of spray heads 55 is in inverse proportion to the included angle, the spacing L of the single row of adjacent spray heads 55 is the staggered spacing L/2 of the front and rear rows of spray heads 55; the splash-proof assembly 8 consists of a hanging plate mounting rod 81, a pavement hanging plate 82, a platform rear hanging plate 83 and a perforating pipe splash-proof plate 84, wherein the upper end of the pavement hanging plate 82 is clamped on the side edge of the overhaul pavement 9 by the hanging plate mounting rod 81, the lower end of the pavement hanging plate is hung on a contact cloth filtering surface, the platform rear hanging plate 83 is clamped on the side edge of the flushing platform 1 by the hanging plate mounting rod 81, the lower end of the platform rear hanging plate 83 is hung on the position above a spray head 55 of the slag flushing row 7, the thickness delta of the perforating pipe splash-proof plate 84 is clamped on the side edges of the flushing platform 1 and the overhaul pavement 9 by the hanging plate mounting rod 81, holes corresponding to the diameter d positions of three rows of flushing row branch pipes are formed in the perforating pipe splash-proof plate 84, and split lines are formed around the holes; the overhauling pavement 8 consists of a pavement frame 91, a pavement grating 92 and handrails 93, wherein the pavement grating 92 is paved on the pavement frame 91, and the handrails 93 are arranged on non-flushing side beams of the pavement frame 91; the outer end of the flushing platform 1 is arranged on the upper edge of the wet slag bucket edge wallboard, one corner of the outer end of the overhauling pavement 9 is supported on the outer foundation IV edge surface of the filter by an outer supporting leg 10, and the other corner of the outer end is connected with an outer end edge beam of a platform frame 11 of the flushing platform 1.

The foregoing is merely illustrative of the present utility model, and the embodiments of the present utility model are not limited thereto, and any changes or modifications made within the field of the present utility model are encompassed in the scope of the present utility model.

Claims (2)

1. The split-flow type filter cloth flushing structure of the rotary table filter comprises a flushing platform (1), an inner arc hanging plate (2), an inner bracket (3), a pipe bracket (4), a filter cloth flushing row (5), a transition flushing row (6), a slag cutting flushing row (7), a splash-proof assembly (8), an overhaul pavement (9) and an outer supporting leg (10); the flushing platform is characterized in that the flushing platform (1) consists of a platform frame (11), a platform front hanging plate (12), a bottom protection plate (13), a surface pattern steel plate (14), an upper movable cover plate (15), a lower movable cover plate (16) and a balance air port (17), wherein the bottom protection plate (13) and the surface pattern steel plate (14) on the rear side of the platform frame (11) are provided with a plurality of square ports corresponding to the whole flushing line, the lower movable cover plate (16) covers the square ports of the bottom protection plate (13), the upper movable cover plate (15) covers the square ports of the surface pattern steel plate (14), and the balance air port (17) penetrates through the surface pattern steel plate (14) and the bottom protection plate (13) and is arranged in front of the upper movable cover plate (15) of the flushing platform (1); the splash-proof assembly (8) consists of a hanging plate mounting rod (81), a pavement hanging plate (82), a platform rear hanging plate (83) and a pipe-penetrating splash-proof plate (84), holes corresponding to the diameter d positions of the three rows of flushing branch pipes are formed in the pipe-penetrating splash-proof plate (84), and split lines are arranged around the holes.

2. The split-type filter cloth flushing structure of the rotary table filter according to claim 1, wherein the filter cloth flushing row (5), the transition flushing row (6) and the cutting slag flushing row (7) are sequentially arranged according to the flushing sequence: the first row is cut sediment and is washed row (7), the second row is washed in transition and is arranged (6), the third row is washed row (5) with filter cloth, three rows of shower nozzles (55) that wash the row spray angle and the filter cloth face contained angle are different, contained angle gamma that the filter cloth washed row (5) was washed the contained angle gamma that the row (6) was washed in transition is more than contained angle alpha that the row (7) was washed in the sediment was cut to the transition, each row shower nozzle (55) liquid outlet is apart from the cloth face height h and contained angle size in direct proportion, the spout equivalent diameter phi and the contained angle size of each row shower nozzle (55) are inversely proportional, front and back row shower nozzle (55) dislocation arrangement.