Quick-release type pressing structure for filter disc of tilting-pan filter

Abstract

The utility model discloses a quick-release pressing structure for a filter disc of a tilting-pan filter, belongs to a tilting-pan vacuum filter structure of solid-liquid separation equipment, and particularly relates to a filter unit structure of the tilting-pan vacuum filter. The utility model provides a quick-release compression structure for a filter disc of a tilting-pan filter, which is characterized in that a U-shaped groove is formed by a lower folding edge at the periphery of a folding edge filter plate and an L-shaped lower folding edge of a side plate of a filter disc body, a compression inclined block is arranged below a check block on the side plate and is parallel to an inclined surface of the side plate to knock downwards, and filter cloth is compressed on a V-shaped rubber strip through a round steel pressing strip in the U-shaped groove. Meanwhile, the lapping plate of the edge-folded filter plate is pressed below the V-shaped rubber strip, so that the work of fixing the filter cloth and the edge-folded filter plate and sealing is completed at one time; according to the structure, the pressing and tipping moment borne by the side plates of the filter disc body is reduced, screw fixation around the filter plate is omitted, and the purposes of reducing deformation of the filter disc, quickly disassembling and replacing the filter cloth and cleaning and maintaining the filter disc are achieved.

Description

Technical Field

[0001] The utility model belongs to a tilting disc vacuum filter structure of solid-liquid separation equipment, in particular to a filtering unit structure of the tilting disc vacuum filter. Background Art

[0002] At present, large-scale flip-disc vacuum filters used in the alumina and phosphate fertilizer chemical industries in China are prone to scaling and strong scaling adhesion as process improvements and material properties change. This results in frequent filter cloth replacement and difficulty in cleaning the filter cavity. The filter cloth and filter plate need to be frequently removed for cleaning and replaced with new ones. The early filter cloth clamping structure welded N nuts on the four side panels of the filter disc, fixed the filter cloth by bolting the pressure strips, and fixed the filter plate with screws around the edges and in the middle. Due to the direct contact between the fasteners and the material, scaling on the exposed thread sections was difficult to remove, and the bolts and nuts were prone to biting and slipping after tightening, often requiring forced removal. Later, vertical compression bevels were used instead of bolts and nuts to install the filter cloth, solving the problem of bolts and nuts being difficult to disassemble and easily damaged in materials prone to scaling. However, the tapping force was difficult to control, resulting in over-tightening and deformation of the side panels around the upper opening of the filter disc, causing the filter disc to flip and rub against the edge. The excessive number of screws fixing the filter plate also made disassembly and cleaning difficult, resulting in long downtime for maintenance and cleaning, affecting the overall machine operating rate. Summary of the Invention

[0003] The U-shaped filter plate is fastened to the filter element by the screw thread, and the filter element is locked.

[0004] The technical solution adopted by the present utility model to solve its technical problems is as follows: A quick-disassembly pressing structure for the filter disc of a rotary disc filter, which is composed of the side plate and support bars of the filter disc body, a stop block, a pressing inclined block, a round steel pressing strip, a filter cloth, a V-shaped rubber strip, a flanged filter plate, a top plate and an anti-loss steel wire; the flanged filter plate is provided with a lapping plate at the lower folded edge around the periphery. The lapping plate can be a whole-length strip or a combination of multiple discontinuous small lapping plates. The lapping plate is parallel to the upper plane of the flanged filter plate; the stop blocks are welded on the inclined plane of the side plate of the filter disc body at certain intervals. The flanged filter plate is placed on the plane formed by the support bars of the filter disc body and is positioned by the top plate lapped at both ends of the support bars. The lower folded edge around the periphery of the flanged filter plate and the L-shaped lower folded edge of the side plate of the filter disc body form a U-shaped groove. The V-shaped rubber strip is inserted into the U-shaped groove with the opening facing upwards and presses on the lapping plate of the flanged filter plate. The two sides of the opening of the V-shaped rubber strip are attached to the two sides of the upper opening of the U-shaped groove. The periphery of the filter cloth is pressed by the segmented round steel pressing strip into the opening of the V-shaped rubber strip and is fixed on the flanged filter plate. The upper inclined side of the pressing inclined block is stuck in the lower groove of the stop block, and the lower arc surface of the pressing inclined block is attached to the round steel pressing strip. The pressing inclined block is parallel to the inclined plane of the side plate of the filter disc body. The anti-loss steel wire connects the stop block and the pressing inclined block to prevent the pressing inclined block from being lost when loosening; continuous pressing is achieved by knocking the knocking surface at the large end of the pressing inclined block to make the pressing inclined block push the round steel pressing strip to squeeze the V-shaped rubber strip to deform. Under the compression deformation of the V-shaped rubber strip, the round steel pressing strip presses the filter cloth and at the same time the two sides of the opening of the V-shaped rubber strip seal the upper opening of the U-shaped groove, preventing the filtrate from entering the bottom cavity without passing through the filter cloth, and the flanged filter plate is also fixed through the lapping plate; under the same pressing force F, compared with the structure where the original pressing inclined block or bolt is perpendicular to the filter plate surface, the structure where the pressing inclined block is parallel to the inclined plane of the side plate of the filter disc body reduces the force arm L, making the moment M = F * L of the side plate of the filter disc body being pressed and overturned decrease, thereby reducing the amount of deformation generated.

[0005] The above-mentioned quick-disassembly pressing structure for the filter disc of a rotary disc filter can simultaneously press and fix the filter cloth and the flanged filter plate under the action of the pressing inclined block, reduces the fasteners around the filter plate, and being parallel to the inclined plane of the side plate of the filter disc body also reduces the moment of pressing and overturning, achieving the purpose of reducing the deformation of the filter disc and quickly disassembling, replacing the filter cloth, and cleaning and maintaining the filter disc. Brief Description of the Drawings

[0006] The following further illustrates the technical solution of the present utility model in conjunction with the drawings and embodiments.

[0007] Figure 1 It is a sectional view of a quick-disassembly pressing structure for the filter disc of a rotary disc filter;

[0008] Figure 2 It is a front view of a quick-disassembly pressing structure for the filter disc of a rotary disc filter;

[0009] Figure 3 It is a bottom view of a quick-disassembly pressing structure for the filter disc of a rotary disc filter;

[0010] Figure 4This is a cutaway view of the original quick-release structure for comparison;

[0011] Figure 5 This is the front view of the original quick-release structure in the comparison picture;

[0012] Figure 6 This is a cross-sectional view of the original bolt compression structure in the comparison diagram;

[0013] Figure 7 This is the front view of the original bolt compression structure in the comparison diagram;

[0014] In the figure, 1. filter disc body, 2. stopper, 3. pressing oblique block, 4. round steel pressure strip, 5. filter cloth, 6. V-shaped rubber strip, 7. folded filter plate, 8. top plate, 9. anti-loss wire, 11. side plate, 12. support bar, 71. perforated plate, 72. strapping plate. DETAILED DESCRIPTION

[0015] The embodiment of a quick-release pressing structure of a flip filter is composed of a filter disc body 1, a stopper 2, a pressing bevel 3, a round steel pressure strip 4, a filter cloth 5, a V-shaped rubber strip 6, a folded filter plate 7, a top plate 8 and an anti-lost steel wire 9; the folded filter plate 7 is composed of a perforated plate 71 and a strap 72, which is distributed around the bottom of the lower fold of the perforated plate 71 and is parallel to the upper plane of the perforated plate 71; the stopper 2 is welded at intervals on the inclined surface of the side plate 11 of the filter disc body 1, and the folded filter plate 7 is on the plane formed by the support strips 12 of the filter disc body 1. The top plate 8 is overlapped at both ends of the support bar 12, and the lower folded edges around the folded filter plate 7 and the L-shaped lower folded edges of the side plates 11 form a U-shaped groove. The strap 72 fits the bottom surface of the U-shaped groove, and the V-shaped rubber strip 6 in the U-shaped groove opens upward. The filter cloth 5 is on the folded filter plate 7 and is pressed in the opening of the V-shaped rubber strip 6 under the round steel strip 4. The upper oblique edge of the clamping oblique block 3 is stuck in the lower groove of the stopper 2, and the lower arc surface of the clamping oblique block 3 fits on the round steel strip 4. The clamping oblique block 3 is parallel to the oblique surface of the side plate 11 of the filter disc body 1, and the anti-loss steel wire 9 connects the stopper 2 and the clamping oblique block 3.

[0016] The above description is only a specific embodiment of the present invention, but the implementation of the present invention is not limited thereto. Any changes or modifications made within the scope of the present invention are included in the patent scope of the present invention.

Claims

1. A quick-detachable pressing structure for a filter disc of a flip filter, comprising a filter disc body (1), a stopper (2), a pressing bevel block (3), a round steel pressure strip (4), a filter cloth (5), a V-shaped rubber strip (6), a folded filter plate (7), a top plate (8) and an anti-lost steel wire (9); characterized in that The folded filter plate (7) of the quick-detachable pressing structure of the flip filter is composed of a perforated plate (71) and a strap (72), the strap (72) is parallel to the upper plane of the folded filter plate (7), the lower folded edges of the folded filter plate (7) and the L-shaped lower folded edges of the side plates (11) of the filter disc body (1) form a U-shaped groove, the strap (72) fits the bottom surface of the U-shaped groove, the opening of the V-shaped rubber strip (6) in the U-shaped groove faces upward, the upper oblique edge of the pressing bevel (3) is stuck in the lower groove of the stop block (2), the lower arc surface of the pressing bevel (3) fits on the round steel pressure strip (4), the pressing bevel (3) is parallel to the oblique surface of the side plates (11) of the filter disc body (1), and the filter cloth (5) is pressed into the opening of the V-shaped rubber strip (6) under the round steel pressure strip (4).

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