Quick-opening type feeding and quick-filtering mechanism of plate-and-frame filter press

Abstract

The utility model relates to a quick-open type plate-and-frame filter press feeding and quick-filtering mechanism which comprises a plurality of filter plates extending vertically, feeding channels extending horizontally are arranged at the four corners of the top of each filter plate, feeding holes communicated with the interior of a filter chamber are formed in the transverse side walls of the feeding channels, and the feeding holes are in a stepped shape with the small inside and the large outside. A plurality of protruding structures are arranged on the surface of the filter plate and located between the filter plate and the corresponding filter cloth, each protruding structure comprises round bosses evenly distributed in the center of the filter plate and round protrusions located on the periphery of the filter plate, and the round protrusions are arranged around the round bosses. Transition protrusions for filling the space are arranged between the circular bosses and the circular protrusions, and water in materials enters the space between the filter cloth and the filter cloth through the filter cloth and moves downwards to the bottom of the filter chamber along a channel formed by the protrusion structures. In short, the fine coal slime filtering device has the advantages of low modification cost, good filtering effect and capability of improving the production efficiency of fine coal slime.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation equipment technology, specifically a quick-opening plate and frame filter press feeding and quick-filtration mechanism. Background Technology

[0002] There are many types of coal preparation plants, among which mine-type coal preparation plants are common. Their production capacity is matched with the mine's production capacity. Mine-type coal preparation plants generally require a maximum washing capacity of not less than 3300 t / h. The coal preparation methods include various equipment. In the main washing workshop, a 100-25 mm heavy medium shallow trough separator is used for separation, along with a 3-0.25 mm spiral separator or direct dewatering and recovery using a coal slime centrifuge. In the fine coal workshop, a 25-6 mm fine coal heavy medium cyclone separator is used. In coal washing and beneficiation, 1-0.25mm coarse coal slime is dewatered and recovered using a spiral separator or a coal slime centrifuge. 0.25-0mm fine coal slime is recovered by a combination of a pressure filter and a single-plate double-chamber feed fast filter press. The single-plate double-chamber feed fast filter press is very important in the treatment of 0.25-0mm fine coal slime. However, due to the low lower limit of the washing capacity in the coal preparation process, the amount of 0.25-0mm coal slime is large, which affects the balance of the production system and leads to production constraints.

[0003] There are many methods to improve single-plate dual-chamber feed rapid filter presses, such as adjusting the feed pressure, optimizing the feed system, adding concentration detection devices, increasing the feed concentration, and installing pressure sensors and level sensors in key parts of the filter press. However, these modifications are relatively expensive and have limited effects. Therefore, there is an urgent need for a new type of single-plate dual-chamber feed rapid filter press to improve its processing efficiency and solve existing problems. Utility Model Content

[0004] In view of this, this utility model proposes a novel single-plate double-chamber feed filter press to solve the technical problems of high modification costs, poor filtration effect and reduced production efficiency of fine coal slime in existing filters.

[0005] To achieve the above-mentioned technical objectives, the specific technical solution adopted by this utility model is as follows:

[0006] A quick-opening plate and frame filter press feeding and filtration mechanism includes multiple vertically extending filter plates, each parallel and vertically arranged, and each filter plate covered with filter cloth. Filter chambers are formed between adjacent filter plates. Horizontally extending feed channels are located at the four top corners of the filter plates. The feed channels are cylindrical, and their transverse sidewalls have inlet holes communicating with the interior of the filter chambers. These inlet holes have a stepped shape, smaller on the inside and larger on the outside, to increase the feed cross-sectional area. The outlet of the inlet hole passes through the filter plate, allowing material to flow from the feed channel... The filter cloth between two adjacent filter plates has multiple raised structures on its surface. These raised structures are located between the filter plates and the corresponding filter cloths. The raised structures include a uniformly distributed circular boss at the center of the filter plate and circular protrusions around the perimeter of the filter plate. The circular protrusions surround the circular boss, and a transition protrusion is provided between the circular boss and the circular protrusions to fill the space. The liquid passes through the filter cloth and enters the space between the filter cloth and the corresponding filter plate, and moves downwards to the bottom of the filter chamber along the channel formed by the raised structures.

[0007] Furthermore, each filter plate has two feed holes located in the feed channel section. The two feed holes extend laterally inside the corresponding filter plate, with the inner diameter of the feed hole being 20mm and the outer diameter of the feed hole being 30mm.

[0008] Furthermore, the feed channel, feed hole, and corresponding filter plate are integrally embedded with ceramic wear-resistant material, thereby reducing the coefficient of friction and minimizing clogging.

[0009] Furthermore, the bottom of the filter plate is provided with a drain hole, which extends vertically and is located between the corresponding filter plate and the corresponding filter cloth.

[0010] Furthermore, the transition protrusions include segmented protrusions located above the circular boss and below and close to the circular boss. The segmented protrusions are all vertically extending strips and are evenly distributed in the horizontal direction, thus forming two sets of segmented bands above and below the circular boss, respectively.

[0011] Furthermore, the circumference of the circular boss is provided with surrounding protrusions distributed in a circular pattern around the center of the circular boss, forming flower extension bands distributed around the circular boss, and there are gaps between the flower extension bands formed by different circular bosses.

[0012] Furthermore, the transition protrusions include ordinary protrusions located between the flower extension bands and between the flower extension bands and the circular protrusions. The ordinary protrusions are distributed in both the lateral and vertical directions and do not interfere with the distribution of the circumferential protrusions inside the flower extension bands.

[0013] Furthermore, the circular protrusions located above and below the transition protrusion are evenly distributed in the horizontal direction, forming multiple horizontally extending transverse protrusion bands. The circular protrusions inside the transverse protrusion bands in adjacent rows are staggered in the horizontal direction. The circular protrusions located on the left and right sides of the transition protrusion are evenly distributed in the vertical direction, forming multiple vertically extending vertical protrusion bands. The circular protrusions inside the vertical protrusion bands in adjacent rows are staggered in the vertical direction.

[0014] Furthermore, there are two rows of drainage holes, which are horizontally distributed at the bottom of the filter plate, with both rows of drainage holes located below the bottommost circular protrusion.

[0015] By adopting the above technical solution, this utility model can also bring the following beneficial effects:

[0016] This utility model discloses a quick-opening plate and frame filter press feeding and filtration mechanism. Addressing the issue of small feed hole diameters in traditional filter presses, it solves the problem of clogging caused by high-viscosity materials or materials containing large particles by using filter plates, filter cloth, and circular bosses and protrusions. By adjusting the diameter and shape of the feed hole design, the flow rate is significantly increased while maintaining structural strength, thereby shortening the filtration cycle and enhancing the filtration effect. Simultaneously, the circular bosses and protrusions increase the filtration area, maximizing the function of the filter plates and increasing the length of liquid flow within the channels on the filter plates, thus accelerating the filtration speed. Compared to traditional filter plates, the feeding speed is increased by 40%, the clogging rate is reduced by 60%, and the filter plate life is extended by 30%. Even under a working pressure of 1.5 MPa, deformation or leakage will not occur. It has the advantages of low modification cost, good filtration effect, and improved fine coal slime production efficiency, and has significant potential for improvement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 Structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the filter plate and the circular boss of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the filter plate and the filter cloth in this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the feed hole and the feed channel in this utility model;

[0022] The components include: 1. Filter plate; 2. Filter cloth; 3. Feed channel; 4. Feed hole; 5. Circular boss; 6. Circular protrusion; 7. Transition protrusion; 8. Dividing protrusion; 9. Surrounding protrusion; 10. Ordinary protrusion; 11. Drain hole. Detailed Implementation

[0023] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. This utility model can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this invention, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functionalities besides one or more of the aspects set forth herein.

[0026] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0027] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0028] Example 1

[0029] like Figures 1 to 4 As shown, a quick-opening plate and frame filter press feeding and quick-filtration mechanism includes multiple vertically extending filter plates 1, each filter plate 1 being parallel and vertically arranged. Each filter plate 1 is covered with filter cloth 2, and filter chambers are formed between the filter plates 1 and adjacent filter plates 1. Horizontally extending feed channels 3 are provided at the four top corners of the filter plates 1. The feed channels 3 are cylindrical in shape, and the transverse sidewalls of the feed channels 3 have feed holes 4 communicating with the interior of the filter chambers. The feed holes 4 adopt a stepped shape with a smaller inner diameter and a larger outer diameter to increase the feed cross-sectional area. The outlet of the feed holes 4 passes through the filter plates 1, allowing material to flow from the feed channels to the filter cloth 2 between two adjacent filter plates 1. The feed channels 3 on each filter plate 1 have the same inner diameter and form a sealed channel that passes through multiple filter plates 1, facilitating the addition of the mixed materials. Multiple raised structures are provided on the surface of the filter plates 1, located between the filter plates 1 and the corresponding filter cloths 2. These raised structures include circular bosses 5 evenly distributed at the center of the filter plate 1 and circular protrusions 6 located around the perimeter of the filter plate 1. The circular protrusions 6 surround the circular bosses 5, and transition protrusions 7 fill the space between the circular bosses 5 and the circular protrusions 6. Liquid passes through the filter cloth 2 and enters the space between the filter cloth 2 and the corresponding filter plate 1, moving downwards along the channel formed by the raised structures to the bottom of the filter chamber. Each filter plate 1 has two feed holes 4 located in the feed channel 3. These two feed holes 4 extend laterally inside the corresponding filter plate 1, with an inner diameter of 20mm and an outer diameter of 30mm.

[0030] The feed channel 3, feed hole 4, and corresponding filter plate 1 are integrally embedded with ceramic wear-resistant material, thereby reducing the friction coefficient and clogging. The bottom of the filter plate 1 is provided with a drain hole 11, which extends vertically and is located between the corresponding filter plate 1 and the filter cloth 2. There are two rows of drain holes 11, which are horizontally distributed at the bottom of the filter plate 1. Both rows of drain holes 11 are located below the bottommost circular protrusion 6.

[0031] The transition protrusion 7 includes dividing protrusions 8 located above the circular protrusion 5 and below and adjacent to the circular protrusion 6. Each dividing protrusion 8 is a vertically extending strip and is evenly distributed horizontally, thus forming two sets of dividing bands above and below the circular protrusion 5. The circumference of the circular protrusion 5 is provided with surrounding protrusions 9 arranged in a circular pattern around the center of the circular protrusion 5, forming flower extension bands distributed around the circular protrusion 5. There are gaps between the flower extension bands formed by different circular protrusions 5. The transition protrusion 7 includes ordinary protrusions 10 located between the flower extension bands and between the flower extension bands and the circular protrusion 6. The ordinary protrusions 10 are distributed in both the horizontal and vertical directions and do not interfere with the distribution of the surrounding protrusions 9 inside the flower extension bands. The circular protrusions 6 located above and below the transition protrusion 7 are evenly distributed in the horizontal direction, forming multiple horizontally extending transverse protrusion bands. The circular protrusions 6 inside the transverse protrusion bands of adjacent rows are staggered in the horizontal direction. The circular protrusions 6 located to the left and right of the transition protrusion 7 are evenly distributed in the vertical direction, forming multiple vertically extending vertical protrusion bands. The circular protrusions 6 inside the vertical protrusion bands of adjacent rows are staggered in the vertical direction.

[0032] In use, the mixture in the feed channel 3 enters the filter cloth 2 between adjacent filter plates 1 inside the corresponding filter chamber through the feed hole 4. Under the filtration of the filter plate 1, large particles of impurities remain between the two filter cloths 2. The liquid through the filter cloth 2 moves to the bottom of the filter plate 1 through the channel formed by the circular protrusion 6, the circular boss 5 and the transition protrusion 7 on the filter plate 1, and is discharged from the drain hole 11 at the bottom. After the impurities between adjacent filter cloths 2 accumulate to a certain extent, they form a coal cake that can be disassembled and removed. In summary, this invention has the advantages of low modification cost, good filtration effect and improved production efficiency of fine coal slime.

[0033] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A quick-opening plate and frame filter press feeding and quick-filtration mechanism, characterized in that: The system includes multiple vertically extending filter plates (1), each of which is parallel and vertically arranged. Each filter plate (1) is covered with a filter cloth (2). Filter chambers are formed between the filter plates (1) and adjacent filter plates (1). Horizontally extending feed channels (3) are provided at the four corners of the top of each filter plate (1). The feed channels (3) are cylindrical in shape. The transverse sidewalls of the feed channels (3) have inlet holes (4) that communicate with the interior of the filter chambers. The inlet holes (4) adopt a stepped shape with a smaller inner diameter and a larger outer diameter to increase the feed cross-sectional area. The outlet of the inlet holes (4) passes through the filter plates (1), allowing material to flow from the feed channels to the two adjacent filter plates (1). Between the filter cloths (2), a plurality of protrusions are provided on the surface of the filter plate (1). The protrusions are located between the filter plate (1) and the corresponding filter cloth (2). The protrusions include a circular boss (5) evenly distributed at the center of the filter plate (1) and a circular protrusion (6) located around the filter plate (1). The circular protrusion (6) is arranged around the circular boss (5). A transition protrusion (7) is provided between the circular boss (5) and the circular protrusion (6) to fill the space. The liquid enters the space between the filter cloth (2) and the corresponding filter plate (1) through the filter cloth (2) and moves downward to the bottom of the filter chamber along the channel formed by the protrusions.

2. The quick-opening plate and frame filter press feeding and quick-filtration mechanism according to claim 1, characterized in that: The number of feed holes (4) located in the feed channel (3) corresponding to a filter plate (1) is two. The two feed holes (4) extend laterally inside the corresponding filter plate (1). The inner diameter of the feed hole (4) is 20 mm, and the outer diameter of the feed hole (4) is 30 mm.

3. The quick-opening plate and frame filter press feeding and quick-filtration mechanism according to claim 2, characterized in that: The feed channel (3), feed hole (4) and corresponding filter plate (1) are integrally embedded with ceramic wear-resistant material, thereby reducing the friction coefficient and reducing clogging.

4. The quick-opening plate and frame filter press feeding and quick-filtration mechanism according to claim 3, characterized in that: The bottom of the filter plate (1) is provided with a drain hole (11), which extends vertically and is located between the corresponding filter plate (1) and filter cloth (2).

5. The quick-opening plate and frame filter press feeding and quick-filtration mechanism according to claim 4, characterized in that: The transition protrusion (7) includes a segmented protrusion (8) located above the circular boss (5) and below and close to the circular protrusion (6). The segmented protrusions (8) are all vertically extending strips and are evenly distributed in the horizontal direction, thereby forming two sets of segmented bands above and below the circular boss (5).

6. The quick-opening plate and frame filter press feeding and quick-filtration mechanism according to claim 5, characterized in that: The circular boss (5) is provided with a circular protrusion (9) arranged around the center of the circular boss (5) to form a flower extension band distributed around the circular boss (5), and there is a gap between the flower extension bands formed by different circular bosses (5).

7. The quick-opening plate and frame filter press feeding and quick-filtration mechanism according to claim 6, characterized in that: The transition protrusions (7) include ordinary protrusions (10) located between the flower extension strips and between the flower extension strips and the circular protrusions (6). The ordinary protrusions (10) are distributed in both the horizontal and vertical directions and do not interfere with the distribution of the surrounding protrusions (9) inside the flower extension strips.

8. The quick-opening plate and frame filter press feeding and quick-filtration mechanism according to claim 7, characterized in that: The circular protrusions (6) located above and below the transition protrusion (7) are evenly distributed in the horizontal direction, forming multiple horizontally extending transverse protrusion bands. The circular protrusions (6) inside the transverse protrusion bands of adjacent rows are staggered in the horizontal direction. The circular protrusions (6) located to the left and right of the transition protrusion (7) are evenly distributed in the vertical direction, forming multiple vertically extending vertical protrusion bands. The circular protrusions (6) inside the vertical protrusion bands of adjacent rows are staggered in the vertical direction.

9. The quick-opening plate and frame filter press feeding and quick-filtration mechanism according to claim 8, characterized in that: The drain holes (11) are in two rows and are horizontally distributed at the bottom of the filter plate (1). Both rows of drain holes (11) are located below the bottommost circular protrusion (6).

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