Improved sealing depression bar for filter disc of tilting-pan filter

Abstract

The utility model discloses an improved sealing depression bar 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 part structure of the tilting-pan vacuum filter. According to the improved sealing depression bar for the filter disc of the tilting-pan filter provided by the utility model, V-shaped side rubber at the side edge of the filter disc of the original sealing depression bar is heightened, and the heightened rubber is filled in an annular V-shaped groove at the periphery of the originally formed filter disc, so that the problem of liquid residue at the periphery is solved, and the aims of improving the washing rate of a filter cake and reducing the moisture content of the filter cake are fulfilled; and meanwhile, the aims of not changing the structure of the filter disc and preventing mature production tool molds from being scrapped are fulfilled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the structure of the disc vacuum filter of solid-liquid separation equipment, in particular to the filter unit spare structure of disc vacuum filter. BACKGROUND

[0002] At present, the filter cloth of the disc vacuum filter used in China adopts a fixed mode of being pressed from all sides, and the periphery sealing is realized by rubber expansion, that is, the round steel bar on the filter cloth is pushed downward by the pressing assembly to press the filter cloth in the V-shaped groove of the rubber sealing pressing bar, at this time, the rubber on both sides of the V-shaped groove of the rubber sealing pressing bar is expanded to tightly contact the both sides of the U-shaped groove of the filter disc to realize sealing. Since the upper part of the round steel bar of the present filter cloth pressing and sealing structure is higher than the upper opening of the V-shaped groove of the rubber sealing pressing bar, a shallow U-shaped groove is formed around the periphery of the filter disc, with the round steel bar and the side plate of the filter disc as two sides, the upper opening of the V-shaped groove of the rubber sealing pressing bar as the bottom side. The liquid in the shallow U-shaped groove cannot be discharged and forms residual liquid, which is mixed into the dry filter cake when the filter disc is tilted to unload, increasing the moisture content of the filter cake and affecting the washing efficiency of the filter cake. Since the present filter machine is basically a large machine, and the filter cake formed by the material is relatively thick, the volume of the shallow U-shaped groove around the periphery of the filter disc is relatively small compared with the volume of the filter cake, so this influence is usually ignored. With the increasing application of the disc vacuum filter in different fields, some materials need the filter machine to run in a state of small filter cake thickness, at this time, the original filter cloth pressing and sealing structure forms a shallow U-shaped groove around the periphery, which cannot be ignored for the washing efficiency and moisture content of the filter cake. How to improve without changing the structure of the filter disc and avoiding the scrapping of mature production tooling molds is a better solution. SUMMARY

[0003] In order to solve the problems existing in the prior art, the utility model provides an improved sealing pressing bar for the filter disc of the disc filter, which increases the rubber on one side of the V-shaped groove at the side of the filter disc of the original sealing pressing bar, and the increased rubber fills the original formed V-shaped groove around the periphery of the filter disc, solves the problem of residual liquid around the periphery, achieves the purpose of improving the washing rate of the filter cake and reducing the moisture content of the filter cake, and at the same time achieves the purpose of not changing the structure of the filter disc and avoiding the scrapping of mature production tooling molds.

[0004] The utility model discloses a technical scheme that solves its technical problems is: a kind of improved sealing batten for filter disc of turnover disc filter, long strip, the original cross-sectional shape is symmetrical trapezoidal (upper mouth width b, lower mouth width a, high c) upper portion is opened V-shaped mouth of width d and depth e, and the section of the side of V-shaped mouth is improved by adding high f;Improved sealing batten is installed in the U-shaped groove (width W depth H) formed by filter disc side plate and folded edge filter plate, and the side of adding high f is attached to filter disc side plate, filter cloth periphery covers improved sealing batten, and the round steel strip of diameter φD is pressed down by the compression assembly fixed on filter disc side plate, so that the round steel strip is pressed in the V-shaped groove of improved sealing batten, at this time, the V-shaped two sides rubber of improved sealing batten is opened and attached to the both sides of U-shaped groove to realize sealing, and the size requirement of improved sealing batten is as follows: b>W>d>a, c≈H, e≈c / 2, b-d≥6mm, f≈D / 2-1mm.

[0005] The improved sealing batten for filter disc of turnover disc filter described above, the section of the side of V-shaped mouth of improved sealing batten by adding high f makes that the side upper plane after being pressed is greater than or equal to the upper mouth of round steel strip, avoids forming shallow U-shaped groove, and solves the problem of liquid residue. BRIEF DESCRIPTION OF DRAWINGS

[0006] The technical scheme of the utility model will be further described below in combination with drawings and examples.

[0007] Figure 1 It is an improved sealing batten installation schematic diagram for filter disc of turnover disc filter;

[0008] Figure 2 It is Figure 1 The cross-sectional view of the improved sealing batten of piece 1;

[0009] In the figure, 1. Improved sealing batten, 2. Round steel strip, 3. Compression assembly, 4. Filter disc side plate, 5. Folded edge filter plate, 6. Filter cloth. DETAILED DESCRIPTION

[0010] The improved sealing strip for the filter disc of the disc-inverting filter is long strip-shaped, and the cross section is in the shape of f-shaped on one side of the symmetric trapezoidal base with the open V-shaped mouth; the improved sealing strip 1 is installed in the U-shaped groove (width W and depth H) formed by the filter disc side plate 4 and the folded edge filter plate 5, the high side is attached to the filter disc side plate 4, the filter cloth 6 periphery covers the improved sealing strip 1, the pressing assembly 3 fixed on the filter disc side plate 4 is on the round steel strip 2 with diameter φD, the round steel strip 2 is pressed on the filter cloth 6 under the improved sealing strip 1 by adjusting the pressing assembly 3, at this time, the V-shaped two sides of the improved sealing strip 1 are expanded and attached to the two sides of the U-shaped groove, and the specific trapezoidal shape is that the upper mouth is wide b, the lower mouth is wide a, the height is c, the V-shaped mouth is wide d and deep e on the upper part, and the cross section of the f-shaped on one side of the V-shaped mouth is added with height f; when W=20mm, H=20mm and D=14mm, the size of the improved sealing strip can be taken as a=17mm, b=22mm, c=20mm, d=15mm, e=10mm and f=6mm.

[0011] The above merely describes the specific embodiments of the present application, but the implementation manners of the present application are not limited to this, any change or modification made in the field of the present application is covered in the patent range of the present application.

Claims

1. An improved sealing strip for a filter disc of a flip filter, in the shape of a long strip, originally with a symmetrical trapezoidal cross-section (upper width b, lower width a, height c), with a V-shaped opening at the top with a width d and a depth e, improved to a V-shaped opening with a height f on one side; characterized by The improved sealing strip (1) is installed in a U-shaped groove (width W depth H) formed by the filter disc side plate (4) and the folded filter plate (5), with the raised side fitting the filter disc side plate (4), the filter cloth (6) covering the periphery of the improved sealing strip (1), the pressing assembly (3) supports the round steel bar (2) with a diameter of φD, and the filter cloth (6) under the round steel bar (2) is pressed tightly in the V-shaped groove of the improved sealing strip (1), and the rubber on both sides of the V-shaped of the improved sealing strip (1) fits closely on both sides of the U-shaped groove. The size requirements of the improved sealing strip are: b>W>d>a, c≈H, e≈c / 2, bd≥6mm, f≈D / 2-1mm.

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