Filter cloth, filter disc and disc filter

Abstract

The utility model discloses filter cloth, which relates to the technical field of filter equipment and comprises a filter cloth body, a plurality of raised bags are arranged on the surface of the filter cloth body, and the raised bags are arranged at intervals; the utility model also discloses a filter disc which comprises a plurality of sector plates and a plurality of filter cloths, each filter cloth body covers at least one sector surface of one sector plate, and the plurality of sector plates can be spliced into a circular plate; the utility model also discloses a disc type filter which comprises a central shaft and a plurality of filter discs, and the central shaft is internally provided with a fluid channel, so that the filter cloth, the filter discs and the disc type filter can improve the effective filtering area under the condition that the area of the filter discs is not changed, thereby improving the filtering efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of filter equipment, in particular to a filter cloth, a filter disc and a disc filter. Background Art

[0002] Disc filters are primarily used for filtering nonferrous and ferrous metals, as well as for filtering and dehydrating coal slime in the coal industry, flotation concentrates from various mines, alumina seed, and salt removal. The disc filter uses the suction action of a vacuum pump to form a filter cake on the filter cloth of the sector plates. After passing through the filter cloth, the filtrate enters the inner cavity of the sector plates and the flow channel of the central axis, achieving the purpose of solid-liquid separation.

[0003] The filter disc of the disc filter is composed of multiple sector plates and filter cloth bags sleeved outside the sector plates. Each sector plate is sleeved with a filter cloth bag. The filtration area of ​​the disc filter is mainly determined by the area of ​​the filter disc supporting the filter cloth bag. For example, the patent (CN208018253U) discloses an agitated filter cloth bag for a disc filter. The filter cloth bag is sleeved on the disc filter plate in a flat form. The area of ​​the filter disc supporting the filter cloth bag is the effective filtration area of ​​the disc filter. The filter cloth bag is sleeved on the disc filter plate in a flat form. Its effective filtration area is consistent with the size of the filter disc, and the filtration efficiency is low. If the production capacity of the equipment of this specification is insufficient, the only option is to increase the number of operating equipment or replace it with a larger equipment, which increases production costs. Utility Model Content

[0004] The purpose of the utility model is to provide a filter cloth, a filter disc and a disc filter to solve the problems existing in the above-mentioned prior art. When the filter disc area remains unchanged, the effective filtration area is increased, thereby improving the filtration efficiency.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a filter cloth, comprising a filter cloth body, wherein the surface of the filter cloth body is provided with convex lumps.

[0007] In some embodiments, there are multiple raised packages, each of which is arranged at intervals. The raised packages protrude from the outer surface of the filter cloth body. The raised packages have an internal cavity. The inner side of the filter cloth body and the surface of the fan-shaped plate can form a filtrate channel. The internal cavity of the raised package is connected to the filtrate channel.

[0008] In some embodiments, the filter cloth body has multiple folded ridges, and the raised package is formed on each of the folded ridges. Each of the raised packages has at least one connecting port on a side facing the fan-shaped plate, and each of the raised packages is connected to the filtrate channel through its connecting port.

[0009] In some embodiments, the filter cloth body has a folded portion, which is folded to form the folded ridge. Stitched sections are arranged at intervals along the length of the folded ridge, and the folded ridge between two adjacent stitched sections forms the raised package.

[0010] In some embodiments, the protruding height of each folding ridge is 0.1 to 100 mm.

[0011] In some embodiments, the length of each of the raised packages is 1 to 200 mm, and the length of each of the suture segments is 1 to 350 mm.

[0012] In some embodiments, the filter cloth body is made of a corrosion-resistant material.

[0013] In some embodiments, part of the edge of the filter cloth body is connected to form a filter cloth bag that can be put on the fan-shaped plate. The filter cloth bag has a hollow channel running through it. The hollow channel has a large end and a small end. The large end and the small end are used to be fixedly connected to the large end and the small end of the fan-shaped plate, respectively.

[0014] The utility model also provides a filter plate, comprising a plurality of the sector plates and a plurality of filter cloths as described above, each filter cloth body covering at least one sector surface of a sector plate, and a plurality of the sector plates can be spliced ​​into a circular plate.

[0015] The present utility model also provides a disc filter, comprising a central axis and a plurality of filter discs as described above, wherein the filter discs are fixedly connected to the central axis, the axis of the filter discs coincides with the axis of the central axis, the fan-shaped plate has an inner cavity, the side wall of the fan-shaped plate is provided with a liquid inlet connected to the inner cavity, the central axis has a fluid channel, and the inner cavity is connected to the fluid channel.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The utility model provides a filter cloth, a filter disc and a disc filter. A plurality of raised packages are provided on the surface of the filter cloth. The raised packages are arranged at intervals so that during the filtration process, solid particles can be intercepted by the filter cloth, while water is collected through the filter cloth, thereby achieving solid-liquid separation. Therefore, by providing a plurality of raised packages, the effective filtration area can be increased while the filter disc area remains unchanged, thereby improving the filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the filter cloth structure in one embodiment of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the filter cloth AA cross-section structure;

[0021] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of filter cloth BB;

[0022] Among them: 1-filter cloth body; 2-folded ridges; 3-raised bag; 4-filtrate channel. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] Example 1

[0026] The utility model provides a filter cloth, such as Figure 1 As shown, it includes a filter cloth body 1, and the surface of the filter cloth body 1 has raised bags 3. By providing multiple raised bags 3 on the surface of the filter cloth body 1, and the raised bags 3 are arranged at intervals, during the filtration process, solid particles are intercepted by the filter cloth, while water can be collected by the filter cloth body 1, thereby achieving solid-liquid separation. Therefore, by providing multiple raised bags 3, the effective filtration area can be increased while the filter disc area remains unchanged, thereby improving the filtration efficiency.

[0027] In some embodiments of the present invention, Figure 2 As shown, there are multiple protrusions 3, each protrusion 3 is arranged at intervals, the protrusion 3 protrudes from the outer surface of the filter cloth body 1, the protrusion 3 has an internal cavity, and the inner side of the filter cloth body 1 and the surface of the sector plate can form a filtrate channel 4, as shown in FIG. Figure 3 As shown, the internal cavity of the protrusion pack 3 is connected to the filtrate channel 4. The internal cavity of the protrusion pack 3 is connected to the filtrate channel 4. During the filtration process, the filtered water can enter the filtrate channel 4 through the filter cloth body 1 and be collected, thereby achieving solid-liquid separation. Therefore, when the filter disc area remains unchanged, the protrusion pack 3 can increase the effective filtration area, thereby improving the filtration efficiency.

[0028] In some embodiments of the present invention, the filter cloth body 1 has a plurality of folded ridges 2, with a raised bump 3 formed on each folded ridge 2. Each raised bump 3 has at least one communication port on a side facing the sector plate, and each raised bump 3 communicates with the filtrate channel 4 through its communication port. The plurality of folded ridges 2 on the filter cloth body 1 can significantly increase the filter cloth's filtration area, thereby improving filtration efficiency.

[0029] In some embodiments of the present invention, the filter cloth body 1 has a folded portion, which can be folded in half to form a folded ridge 2. Sewn segments formed by stitching are arranged at intervals along the length of the folded ridge 2, and the folded ridge 2 between two adjacent sewn segments forms a raised bump 3. During the filtration process, when the filter cloth is subjected to large filtration pressure and material impact, the folded ridge 2 is prone to change shape, resulting in local bulging or collapse. The sewn segments arranged at intervals on the folded ridge 2 are preferably sewn a distance at the position where the folded ridge 2 contacts the fan-shaped plate to form a sewn segment. The sewn segments can maintain the basic shape of the folded ridge 2, ensure the stability of the filtration area of ​​the filter cloth, and thus ensure the normal operation of the filtration operation.

[0030] In some embodiments of the present invention, the height of the folded ribs 2 is 0.1 to 100 mm. Within this height range, the folded ribs 2 can provide sufficient structural support for the filter cloth, and the folded ribs 2 within this height range help guide the flow of fluid on the filter cloth surface. The folded ribs 2 will not cause severe turbulence due to excessive height, nor will they be unable to effectively guide the fluid flow due to excessive height, thereby ensuring the filtering effect.

[0031] In some embodiments of the present invention, the length of the protrusions 3 is 1 to 200 mm, and the length of the stitching is 1 to 350 mm. The combination of the protrusions 3 having a length of 1 to 200 mm and the stitching having a length of 1 to 350 mm can enhance the stability of the overall structure of the filter cloth, and can also adjust the fluid distribution on the filter cloth surface to a certain extent, thereby improving the filtering effect.

[0032] In some embodiments of the present invention, the filter cloth body 1 is made of a corrosion-resistant material. The material of the filter cloth body 1 is preferably polytetrafluoroethylene or polyester fiber. Polytetrafluoroethylene and polyester fiber have excellent chemical properties and are resistant to most corrosive liquids. Therefore, in the chemical industry, when filtering corrosive liquids, filter cloths made of these materials can operate stably and will not be corroded by chemical substances, thereby ensuring a smooth filtration process and increasing the service life of the filter cloth.

[0033] In some embodiments of the present invention, a portion of the edge of the filter cloth body 1 is connected to form a filter cloth bag that can be sleeved on the sector plate. The filter cloth bag has a hollow passage running through it, and the hollow passage has a large end and a small end. The large end and the small end are respectively used to be fixedly connected to the large end and the small end of the sector plate. The filter cloth body 1 is sleeved on the sector plate, and the large end of the filter cloth body 1 is welded and fixed to the large end of the sector plate, and the small end of the filter cloth body 1 is fixed to the small end of the sector plate through a throat clamp. The filter cloth bag filters on both sides simultaneously, which can improve the filtration efficiency.

[0034] Example 2

[0035] The present invention provides a filter disc comprising a plurality of sector plates and a plurality of filter cloths according to the first embodiment. The filter cloth body 1 covers at least one sector surface of a sector plate, and the plurality of sector plates can be spliced ​​together to form a circular disc. The filter disc, composed of multiple sector plates, is more convenient to manufacture. Furthermore, if a sector plate or filter cloth has a quality problem during processing, only that part needs to be reworked or replaced, without having to replace the integral filter disc or filter cloth, thereby effectively reducing production costs.

[0036] Example 3

[0037] The present invention provides a disc filter comprising a central axis and a plurality of filter discs as described in Example 2. The filter discs are fixedly connected to the central axis, with the axis of the filter discs coinciding with the axis of the central axis. The sector plates have an inner cavity, and the sidewalls of the sector plates are provided with a liquid inlet connected to the inner cavity. The central axis has a fluid channel, and the inner cavity and the fluid channel are connected. Filtered liquid sequentially enters the inner cavity of the sector plates and the fluid channel in the central axis before being discharged. The presence of multiple filter discs can significantly increase the total filtration area of ​​the disc filter, effectively improving filtration efficiency.

[0038] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A filter cloth, characterized in that: The filter cloth body comprises a filter cloth body, and the surface of the filter cloth body is provided with convex bags.

2. The filter cloth according to claim 1, characterized in that: There are multiple raised packages, which are arranged at intervals. The raised packages protrude from the outer surface of the filter cloth body. The raised packages have an internal cavity. The inner side of the filter cloth body and the surface of the fan-shaped plate can form a filtrate channel. The internal cavity of the raised package is connected to the filtrate channel.

3. The filter cloth according to claim 2, characterized in that: The filter cloth body has a plurality of folded ridges, and the raised packages are formed on each of the folded ridges. Each of the raised packages has at least one communication port on a side facing the sector plate, and each of the raised packages is connected to the filtrate channel through the communication port.

4. The filter cloth according to claim 3, characterized in that: The filter cloth body has a folded portion, which is folded to form the folded ridge. Sewing segments formed by sewing are arranged at intervals along the length direction of the folded ridge, and the folded ridge between two adjacent sewing segments forms the convex bag.

5. The filter cloth according to claim 3, characterized in that: The protruding height of each folding ridge is 0.1 to 100 mm.

6. The filter cloth according to claim 4, characterized in that: The length of each protrusion is 1 to 200 mm, and the length of each suture section is 1 to 350 mm.

7. The filter cloth according to claim 4, characterized in that: The filter cloth body is made of corrosion-resistant material.

8. The filter cloth according to claim 1, characterized in that: Partial edges of the filter cloth body are connected to form a filter cloth bag that can be put on the fan-shaped plate. The filter cloth bag has a hollow channel running through it. The hollow channel has a large end and a small end. The large end and the small end are respectively used to be fixedly connected to the large end and the small end of the fan-shaped plate.

9. A filter disc, characterized in that: It comprises a plurality of the sector plates and a plurality of filter cloths according to any one of claims 1 to 8, each filter cloth body covers at least one sector surface of a sector plate, and a plurality of the sector plates can be spliced ​​into a circular plate.

10. A disc filter, characterized in that: It includes a central axis and multiple filter discs as described in claim 9, the filter discs are fixedly connected to the central axis, the axis of the filter discs coincides with the axis of the central axis, the fan-shaped plate has an inner cavity, the side wall of the fan-shaped plate is provided with a liquid inlet connected to the inner cavity, the central axis has a fluid channel, and the inner cavity is connected to the fluid channel.

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