Combined filter plate of vacuum disc filter

Abstract

A combined type filter plate of a vacuum disc type filter comprises a plate handle, a frame, a supporting grating and a plurality of filter discs, the filter discs are arranged on the supporting grating and fixed by the frame, the filter discs are arranged on the left side and the right side of a block-shaped interval, the filter discs on the left side and the right side are oppositely arranged, and protrusions on the inner sides of the filter discs are oppositely attached to each other. And a filtrate channel is formed by a sunken part around the bulge. The overall strength structure of the filter plate can be guaranteed through combination of the filter plate frame and the supporting grating, the filter discs can be made of microporous ceramics or sintered stainless steel powder, the excellent filtering performance of the microporous ceramics is utilized, and the effective filtering area of the filter plate can be enlarged through splicing and assembling. The large-scale ceramic filter with excellent filtering performance can simplify a process system and reduce the construction cost of a selection plant; the ceramic filter plate or the sintered stainless steel powder material is used as the filter medium and does not need to be replaced after long-term operation, and compared with a traditional filter with filter cloth as the filter medium, personnel maintenance can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vacuum disc filter technical field, mainly relates to a kind of combined filter plate of vacuum disc filter. BACKGROUND

[0002] Vacuum disc filter is mainly divided into two kinds, one is porous ceramic as filter medium, utilizes the capillary action of the large number of ceramic micropore and adsorbs filter cake;Another is with filter cloth as filter medium, in the negative pressure effect of vacuum and adsorbs filter cake.Sheet vacuum filter is widely used in mining, chemical industry, environmental protection and other fields due to stable operation.

[0003] Filter disc is immersed in slurry to adsorb filter cake when equipment runs, filtrate is filtered through filter medium under the action of capillary or vacuum, converges in the equipment flow channel, and filtrate is pumped to steam-water separator and discharged by the negative pressure generated by vacuum pump.Filter cake is further dried after turning out liquid surface, and vacuum system is cut off or compressed air is introduced to unload cake.

[0004] Now with the continuous development of mining technology, the scale of concentrator is also expanding, and the large-scale of filter equipment is inevitable trend.Ceramic filter plate with ceramic as filter medium has problems such as complex manufacturing process, high cost, fragile and corrosion-resistant, and the size of single ceramic filter plate is limited, so the filter area of single equipment cannot be expanded, which limits the large-scale development of ceramic filter machine.Filter cloth filter machine with filter cloth as filter medium has problems such as large porosity and high air permeability, and the comprehensive energy consumption of filter machine with the same filter surface is several times that of ceramic filter machine, and the solid content of filtrate is also higher. UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned shortcomings, the utility model provides a combined filter plate of vacuum disc filter.

[0006] The utility model solves the technical scheme adopted by its technical problems:

[0007] A combined filter plate of vacuum disc filter, comprising:

[0008] Plate handle;

[0009] Frame, arranged on the plate handle;

[0010] A plurality of filter sheets, the filter sheet is of porous ceramic material or sintered stainless steel powder material, the inner side of the filter sheet is provided with a plurality of protrusions in array;

[0011] A support grid is arranged in the frame and divides the frame into several block-shaped intervals, the support grid is provided with liquid-passing channels, the liquid-passing channels connect adjacent block-shaped intervals, each block-shaped interval is divided into left and right sides and is symmetrically arranged on both sides of the support grid, and the block-shaped interval is used for accommodating the filter sheet; the support grid is used for supporting the filter sheet.

[0012] The filter sheet is arranged on the support grid and fixed by the frame, the left and right sides of the block-shaped interval are provided with filter sheets, and the filter sheets on the left and right sides are oppositely arranged, so that the protrusions on the inner side of the filter sheet are oppositely attached, and the recesses around the protrusions form the filtrate channels.

[0013] The support grid comprises:

[0014] A radial grid is arranged along the length direction of the filter plate;

[0015] A plurality of pairs of transverse grids are arranged at intervals in the length direction of the radial grid, each pair of transverse grids is symmetrically arranged on both sides of the radial grid, and the transverse grid is provided with a liquid-passing channel;

[0016] The transverse grid and the longitudinal grid form a plurality of support parts, and the support parts are used for supporting the filter sheet.

[0017] The radial grid comprises a longitudinal plate, the longitudinal plate is provided with a left side plate and a right side plate, the left side plate and the right side plate are arranged in parallel and are perpendicular to the longitudinal plate, and the left side plate and the right side plate are symmetrically distributed on the longitudinal plate.

[0018] The transverse grid comprises a left side grid and a right side grid, a liquid-passing channel is arranged between the left side grid and the right side grid, and a connecting part for connecting the left side grid and the right side grid is arranged in the liquid-passing channel.

[0019] The left side grid comprises a left side support plate, and a left baffle plate is vertically arranged on the upper surface of the left side support plate; the right side grid comprises a right side support plate, and a right baffle plate is vertically arranged on the lower surface of the right side support plate.

[0020] The left baffle plate and the right baffle plate at one end of the transverse grid close to the radial grid both extend out of the left side support plate and the right side support plate, so as to form a recess, and the transverse grid and the radial grid are inserted through the recess.

[0021] The left side support plate of the left side grid and the left side plate of the radial grid are coplanar, and provide support for the filter sheet on the left side; and the right side support plate of the right side grid and the right side plate of the radial grid are coplanar, and provide support for the filter sheet on the right side.

[0022] Due to the adoption of the technical scheme, the present application has the following advantages:

[0023] The combined filter plate of the vacuum disc filter has the advantages that the combination of the filter plate frame and the supporting grid can guarantee the overall strength structure of the filter plate, the filter disc can adopt microporous ceramic or sintered stainless steel powder material, the superior filtering performance of the microporous ceramic is utilized, the effective filtering area of the filter plate can be enlarged through splicing assembly, and a large-scale ceramic filter is developed. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic view of the overall structure of the utility model;

[0025] Figure 2 is a schematic view of the structure of the utility model with some left filter discs removed;

[0026] Figure 3 is Figure 2 is an enlarged schematic view of the dashed box;

[0027] Figure 4 is Figure 2 is a sectional view of A-A in FIG. 4;

[0028] Figure 5 is a schematic view of the radial grid in three dimensions;

[0029] Figure 6 is a schematic view of the horizontal grid in three dimensions;

[0030] Figure 7 is a schematic view of the structure of each pair of horizontal grids. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are some of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] First, the meaning of "radial" in the text is defined. Since the filter disc of the disc filter frame is disc-shaped, and the filter disc is composed of multiple sector-shaped plates, the filter plate in this text refers to the sector-shaped plate. Therefore, the radial direction in the text refers to the direction of the diameter of the filter disc, that is, the direction of the center line of the sector-shaped plate.

[0033] In addition, the left and right directions in the following are not the directions in the drawings, but the directions of the fan-shaped plates in normal operation, and the left and right are actually named in reference to the support grid, located on both sides thereof, and in accordance with the angle of view, the side where the filter 1 is located is the left side, and the side where the filter on the back of the filter 1 is located is the right side. Figure 1

[0034] The combined filter plate of the vacuum disc filter comprises a plate handle 4, a frame 2, a support grid 3, and a plurality of filter plates 1.

[0035] The plate handle 4 fixes the entire filter plate on the rotating shaft, and at the same time, the filter plate also performs filtrate backflow, vacuumizing, and back flushing operations through the plate handle 4.

[0036] As shown in Figure 1 , the frame 2 is arranged on the plate handle 4; the frame 2 surrounds the support grid 3, the support grid 3 is arranged in the frame 2, and the frame 2 is divided into a plurality of block-shaped intervals by the support grid 3; the support grid 3 is provided with a liquid passing channel 5, the liquid passing channel 5 communicates adjacent radial block-shaped intervals, and facilitates the flow of filtrate to the plate handle 4. Figure 2 As shown in , each block-shaped interval is divided into left and right two layers and symmetrically arranged on both sides of the support grid 3, and the block-shaped interval is used for accommodating the filter plate 1; the support grid 3 is used for supporting the filter plate 1.

[0037] The filter plate 1 is made of porous ceramic material or sintered stainless steel powder material and has certain air permeability; after being immersed in slurry, the filter plate 1 adsorbs materials on the surface of the filter plate 1 under the action of vacuum or capillary force; the inner side of the filter plate is provided with a plurality of protrusions 11 arranged in an array.

[0038] Figure 4 Among them, the filter plate 1 is arranged on the support grid 3 and fixed by the frame 2, as shown in Figures 2-4 , the two side edges of the frame 2 are inwardly recessed, used for wrapping the edges of the filter plate 1 and the edges of the support grid, so as to ensure that the filter plate does not fall off.

[0039] Since the support grid 3 divides the frame 2 into a plurality of block-shaped intervals, and the filter plate can be produced according to the size of the divided block-shaped intervals, the defect that the equipment cannot be large-sized can be overcome, and a larger filter disc can be obtained only by dividing the frame 2 into more parts by the support grid 3, without the need to separately make larger filter plates, so that the production process is not increased, but the operation is simpler. The damage of large filter plates can be avoided.

[0040] As shown in Figure 1 and 2 ​As shown, during operation, if the inside of the filter plate is under vacuum, the filtrate enters the filter tray through the filter element 1. Since the filter elements 1 are arranged opposite each other on the left and right sides of the blocky area, and the protrusions 11 of the filter elements 1 on both sides are fitted together, as... Figure 4 As shown, this ensures that during vacuuming, the filter 1, due to its large lateral span and lack of support, avoids the risk of it breaking in the middle. The filtrate flows from the filtrate channel 12 around the protrusion 11 towards the handle 4, through the liquid passage 5 on the support grid 3 to the filtrate channel of the radially adjacent block section, and finally flows to the handle 4.

[0041] Preferred, such as Figures 2-4 As shown, the support grid includes: a radial grid 31 and multiple pairs of transverse grids 32.

[0042] Radial grid 31 is provided along the length of the filter plate or in a radial direction.

[0043] Each pair of transverse grilles 32 is spaced apart along the length of the radial grille 31, and each transverse grille 32 is provided with a liquid passage 5.

[0044] like Figure 4 As shown, the transverse grid 32 and the longitudinal grid 31 form several support parts 6, which are used to support the filter sheet.

[0045] Specifically, such as Figure 5 As shown, the radial grille 31 includes a longitudinal plate 311, on which a left side plate 312 and a right side plate 313 are provided. The left side plate 312 and the right side plate 313 are arranged in parallel and perpendicular to the longitudinal plate 311. The left side plate 312 and the right side plate 313 are symmetrically distributed on the longitudinal plate 311.

[0046] Specifically, such as Figure 6 and 7 As shown, the transverse grid 32 includes a left grid 322 and a right grid 323. A liquid passage 5 is provided between the left grid 322 and the right grid 323. A connecting part 321 for connecting the left grid 322 and the right grid 323 is provided in the liquid passage 5.

[0047] Furthermore, the left grille 322 includes a left support plate 3221, and a left baffle 3222 is vertically provided on the upper surface of the left support plate 3221; the right grille 323 includes a right support plate 3231, and a right baffle 3232 is vertically provided on the lower surface of the right support plate 3231.

[0048] like Figure 7As shown, the left baffle 3222 and the right baffle 3232 of the transverse grid 32 near one end of the radial grid 31 extend out of the left support plate 3221 and the right support plate 3231, thereby forming a recess B at the end of the transverse grid 32 near the radial grid 31, through which the transverse grid 32 and the radial grid 31 are inserted. After the insertion, as shown in Fig. 2, the left support plate 3221 of the left grid 322 and the left plate 312 of the radial grid 31 are coplanar, together forming the support part 6 to provide support for the filter sheet on the left side; the right support plate 3231 of the right grid 323 and the right plate 313 of the radial grid 31 are coplanar, together forming the support part 6 to provide support for the filter sheet on the right side. Figure 4 As shown, the left support plate 3221 of the left grid 322 and the left plate 312 of the radial grid 31 are coplanar, together forming the support part 6 to provide support for the filter sheet on the left side; the right support plate 3231 of the right grid 323 and the right plate 313 of the radial grid 31 are coplanar, together forming the support part 6 to provide support for the filter sheet on the right side.

[0049] The design can guarantee the overall strength structure of the filter plate through the combination of the filter plate frame 2 and the support grid 3, utilize the superior filtering performance of the microporous ceramic, and expand the effective filtering area of the filter plate through splicing and assembly, thereby developing a large-scale ceramic filter. The large-scale ceramic filter can simplify the process system and reduce the construction cost of the concentrator; the ceramic filter plate is used as the filtering medium and does not need to be replaced during long-term operation, and the personnel maintenance can be greatly reduced compared with the traditional filter with filter cloth as the filtering medium.

[0050] The parts not described in detail in the above content are prior art and are not described in detail.

Claims

1. A modular filter plate for a vacuum disc filter, characterized by: The application relates to a filter plate, which comprises a plate handle, a frame arranged on the plate handle, a plurality of filter sheets made of porous ceramic material or sintered stainless steel powder material, the inner side of the filter sheets being provided with a plurality of projections arranged in an array, a support grid arranged in the frame and separating the frame into a plurality of block-shaped intervals, the support grid being provided with liquid-passing channels, the liquid-passing channels connecting adjacent block-shaped intervals, each block-shaped interval being divided into left and right sides and being symmetrically arranged on both sides of the support grid, and the block-shaped interval being used for accommodating the filter sheets, and the support grid being used for supporting the filter sheets. The support grid comprises a radial grid arranged along the length direction of the filter plate, a plurality of pairs of transverse grids, each pair of transverse grids being arranged at intervals in the length direction of the radial grid, each pair of transverse grids being symmetrically arranged on both sides of the radial grid, and the transverse grid being provided with a liquid-passing channel. The radial grid comprises a longitudinal plate, the longitudinal plate being provided with a left side plate and a right side plate, the left side plate and the right side plate being arranged in parallel and being perpendicular to the longitudinal plate, and the left side plate and the right side plate being symmetrically distributed on the longitudinal plate. The transverse grid comprises a left side grid and a right side grid, the left side grid and the right side grid being provided with a liquid-passing channel, and the liquid-passing channel being provided with a connecting part used for connecting the left side grid and the right side grid. The left side grid comprises a left side support plate, and the upper surface of the left side support plate is vertically provided with a left side baffle; the right side grid comprises a right side support plate, and the lower surface of the right side support plate is vertically provided with a right side baffle. The left side baffle and the right side baffle at one end of the transverse grid close to the radial grid extend out of the left side support plate and the right side support plate, so that a recess part is formed at one end of the transverse grid close to the radial grid, and the transverse grid and the radial grid are inserted through the recess part.

2. The combined filter plate of a vacuum disc filter according to claim 1, characterized in that: The left side support plate of the left side grid and the left side plate of the radial grid are coplanar, and the left side support plate provides support for the filter sheet on the left side; the right side support plate of the right side grid and the right side plate of the radial grid are coplanar, and the right side support plate provides support for the filter sheet on the right side. ​ ​ ​ 3. The combined filter plate of a vacuum disc filter according to claim 2, characterized in that: ​ 4. The combined filter plate of a vacuum disc filter according to claim 3, characterized in that: ​ 5. The combined filter plate of a vacuum disc filter according to claim 4, characterized in that: ​ 6. The combined filter plate of a vacuum disc filter according to claim 5, characterized in that: ​ 7. The combined filter plate of a vacuum disc filter according to claim 6, characterized in that: ​

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