Coal slime filtration and dewatering device

Abstract

The utility model discloses a kind of slime filtration dewatering devices, it is related to coal mine processing equipment field, including: device main body, its inside is equipped with guide pipe;Inlet pipe, it is equipped in one end of the device main body and with the guide pipe intercommunication;Filter screen mounting plate, it is slidably equipped in the device main body, multiple filter screens are equipped on the filter screen mounting plate;Movable sealing unit, it is movably equipped in one end of the device main body away from the inlet pipe, the movable sealing unit can be moved relative to the device main body, to cooperate with the device main body and hold or release the filter screen mounting plate.The utility model by using slidably set filter screen mounting plate, movable movable sealing unit and the cooperation of jet cleaning mechanism, innovatively realizes under the premise of not stopping, not interrupting main stream filtration process, to part of clogged filter screen carries out online sealing isolation and high pressure back blow cleaning, simultaneously using pressurizing valve and pressure relief valve collaborative maintenance system internal pressure stability.

Description

Technical Field

[0001] This utility model relates to the field of coal mine processing equipment, specifically a coal slime filtration and dewatering device. Background Technology

[0002] Coal slime, a byproduct of coal washing and processing, has a high moisture content that not only increases transportation costs but also hinders the comprehensive utilization efficiency of subsequent resources. Therefore, effective filtration and dewatering of coal slime is a crucial step in the clean utilization of coal. Currently, the industry commonly uses vacuum filters and filter presses for solid-liquid separation of coal slime, and the core of these devices relies on filter screens to achieve the filtration function.

[0003] In existing coal slime filtration and dewatering devices, the filter screens are easily clogged by fine coal slime particles during long-term operation, leading to a significant decrease in filtration efficiency and a deterioration in dewatering effect. To solve the filter screen clogging problem, a common practice is to install a backflushing cleaning system, using high-pressure gas to backflush the filter screens during filtration gaps or when the system is shut down to remove blockages. However, traditional backflushing cleaning often requires stopping feeding and filtration operations, or it cannot effectively and independently clean all filter screen surfaces. This undoubtedly disrupts production continuity and reduces the overall processing capacity of the unit.

[0004] Furthermore, existing devices have shortcomings in terms of sealing, pressure maintenance, and rapid filter switching mechanisms. For example, when cleaning a set of filters, the entire system may need to be depressurized and shut down, making it impossible to achieve parallel operation of "online cleaning" and "continuous dehydration." This not only leads to low production efficiency but also increases equipment energy consumption and affects operational stability. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a coal slime filtration and dewatering device to solve the technical problem.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal slime filtration and dewatering device, comprising: a device body with a guide pipe inside; a feed pipe located at one end of the device body and communicating with the guide pipe; a filter screen mounting plate slidably disposed within the device body, the filter screen mounting plate having multiple filter screens; a movable sealing unit movably disposed at one end of the device body away from the feed pipe, the movable sealing unit being movable relative to the device body to cooperate with the device body to clamp or release the filter screen mounting plate, thereby selectively sealing designated filter screens on the filter screen mounting plate; and a cleaning mechanism disposed on the movable sealing unit for backflushing and cleaning unsealed filter screens.

[0007] The present invention is further configured such that the movable sealing unit includes: a connecting shell, movably disposed at the end of the device body; a first sealing plate, disposed on the surface of the connecting shell near the filter mounting plate; and a second sealing plate, disposed on the surface of the guide tube near the filter mounting plate. When the connecting shell moves toward the device body, the first sealing plate and the second sealing plate together clamp the filter mounting plate, thereby sealing the designated filter. A first connecting block is provided at the top of the connecting shell, and a guide rod is disposed through the first connecting block to guide the movement of the connecting shell.

[0008] The present invention is further configured to include a drive mechanism, which is connected to the connecting shell and is used to control the movement of the connecting shell.

[0009] The present invention is further configured such that the driving mechanism includes: a telescopic cylinder disposed at the bottom of the main body of the device; and a second connecting block disposed at the bottom of the connecting shell and connected to the output end of the telescopic cylinder.

[0010] The present invention is further configured such that the cleaning mechanism includes: a pair of connecting plates disposed on the outer sides of the connecting shell; and an air jet device disposed on the surface of the connecting plates near the filter mounting plate.

[0011] The present invention is further provided that the bottom of the filter screen mounting plate is provided with a sliding rod, and the main body of the device is provided with a sliding rail or sliding groove adapted to the sliding rod, so that the filter screen mounting plate can slide laterally.

[0012] The present invention is further configured to include a pressure control component, which is connected to the feed pipe and is used to maintain system pressure during filtration and dehydration or to release pressure when necessary. The pressure control component includes: a pressure valve located on the feed pipe; and a pressure relief valve located on the feed pipe.

[0013] In summary, the present invention has the following main advantages: This invention innovatively achieves online sealing and high-pressure backflushing cleaning of partially clogged filters without stopping the main filtration process or interrupting the main filtration process by employing a slidable filter mounting plate, a movable sealing unit, and a corresponding jet cleaning mechanism. At the same time, it utilizes a pressure valve and a pressure relief valve to maintain stable internal system pressure, thereby effectively solving the problem of low production efficiency caused by the need for complete shutdown for cleaning of clogged filters in traditional devices. This significantly improves the continuous operation capability, processing efficiency, and operational stability of coal slime dewatering. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial exploded view of the structure of this utility model; Figure 3 This is a bottom view of the overall structure of this utility model; Figure 4 This is a bottom view of part of the structure of this utility model.

[0015] In the diagram: 1. Main body of the device; 2. Feed pipe; 3. First connecting block; 4. Connecting shell; 5. Air jet device; 6. Connecting plate; 7. Filter screen mounting plate; 8. Slide rod; 9. Guide pipe; 10. Pressure valve; 11. Second sealing plate; 12. Second connecting block; 13. Telescopic cylinder; 14. Pressure relief valve; 15. First sealing plate. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0017] The embodiments of this utility model will be described below based on its overall structure.

[0018] A coal slime filtration and dewatering device, the core of which lies in realizing the continuous filtration and dewatering process and online efficient cleaning after the filter screen becomes clogged.

[0019] like Figure 1-4 As shown, the coal slime filtration and dewatering device includes a main body 1. The main body 1 is typically a cylindrical or box-shaped structure, with a guide pipe 9 fixedly installed inside. One end of the guide pipe 9 is connected to a feed pipe 2 located at one end of the main body 1. The coal slime slurry enters through the feed pipe 2 and is guided into the device through the guide pipe 9.

[0020] Inside the main body 1 of the device, a sliding filter mounting plate 7 is provided. Multiple filter screens are arranged laterally on the filter mounting plate 7; these screens are the core components for achieving solid-liquid separation of coal slime. To enable the sliding of the filter mounting plate 7, a sliding rod 8 is fixedly installed at its bottom. Correspondingly, a slide rail or groove (not shown separately in the figure) adapted to the sliding rod 8 is provided on the inner wall of the main body 1, allowing the filter mounting plate 7 to slide stably laterally within the main body 1 via the sliding rod 8.

[0021] A movable sealing unit is movably installed at the end of the device body 1 away from the feed pipe 2. This movable sealing unit mainly includes a connecting shell 4. The connecting shell 4 is connected to the drive mechanism through a first connecting block 3 at its top and a second connecting block 12 at its bottom. Specifically, the drive mechanism includes a telescopic cylinder 13 fixed to the bottom of the device body 1, and the output end of the telescopic cylinder 13 is hinged or fixedly connected to the second connecting block 12. By controlling the extension and retraction of the telescopic cylinder 13, the connecting shell 4 can be driven to move toward or away from the device body 1, thereby adjusting the distance between the two. To ensure the smoothness of the movement of the connecting shell 4, one or more guide rods 16 are installed through the first connecting block 3. The two ends of the guide rods 16 are fixed to the external support or the device body 1, providing precise guidance for the movement of the first connecting block 3 and even the entire connecting shell 4.

[0022] The core function of the movable sealing unit is to cooperate with the main body 1 of the device to clamp and seal the filter screen mounting plate 7. A first sealing plate 15 is installed on the end face of the connecting shell 4 near the filter screen mounting plate 7. A second sealing plate 11 is installed on the end face of the guide tube 9 inside the main body 1 near the filter screen mounting plate 7. The first sealing plate 15 and the second sealing plate 11 are typically made of elastic sealing materials such as rubber or polyurethane. When the telescopic cylinder 13 drives the connecting shell 4 to move towards the main body 1 to the closed position, the first sealing plate 15 and the second sealing plate 11 tightly clamp the filter screen mounting plate 7 from both sides, thereby sealing the filter screen in the designated area between them, making that area an effective filtration and dewatering working zone. Under pressure, water in the coal slime is discharged through the sealed filter screen, while solid particles are trapped, completing the dewatering process.

[0023] To address the filter clogging issue, a cleaning mechanism is integrated into the connecting housing 4. This cleaning mechanism includes a pair of connecting plates 6 symmetrically positioned on the outer sides of the connecting housing 4, with an air jet device 5 mounted on the surface of each connecting plate 6 facing the filter mounting plate 7. The air jet device 5 can be a nozzle or a spray pipe, and it is connected to an external compressed air source via an air passage (not shown in the figure).

[0024] The workflow is as follows: When the filter screen used for dewatering becomes clogged, first close the valve on the feed pipe 2. Then, control the telescopic cylinder 13 to retract, causing the connecting shell 4 to move away from the main body 1 of the device, thereby releasing the clamp on the filter screen mounting plate 7. At this time, the operator or the automatic control system can drive the slide bar 8 through an external mechanism (such as a handle or linear motor), causing the entire filter screen mounting plate 7 to slide laterally, moving the clogged filter screen to a position facing the jetting devices 5 on both sides. Next, start the jetting devices 5, and the high-pressure gas jet directly acts on the clogged filter screen for backflushing and cleaning, blowing off the blockage. During this period, since the feed is closed and other filter screens are not sealed, the cleaning process does not affect the overall device.

[0025] To maintain the pressure required for filtration and dewatering and to release pressure when necessary, a pressure control assembly is connected to the feed pipe 2. This assembly includes a pressure-increasing valve 10 and a pressure-relief valve 14. The pressure-increasing valve 10 (such as a pressure regulating valve or an air inlet valve) is used to replenish gas into the system after the feed pipe 2 is closed to maintain a certain filtration driving force and ensure the dewatering effect. The pressure-relief valve 14 (such as a safety valve or an air vent valve) is used to release internal pressure when the system pressure is too high or maintenance is required, ensuring the stability of equipment and pipeline transportation. This invention achieves online and efficient cleaning of the filter screen during coal slime dewatering through the synergistic effect of a sliding filter screen mounting plate, a movable sealing unit, and an online jet cleaning mechanism, significantly improving the equipment's continuous operation capability and production efficiency.

[0026] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A coal slime filtration and dewatering device, characterized in that: include: The main body of the device (1) has a guide tube (9) inside. The feed pipe (2) is located at one end of the main body (1) of the device and is connected to the guide pipe (9); A filter mounting plate (7) is slidably disposed within the main body (1) of the device, and a plurality of filters are provided on the filter mounting plate (7); A movable sealing unit is movably disposed at one end of the device body (1) away from the feed pipe (2). The movable sealing unit is movable relative to the device body (1) to cooperate with the device body (1) to clamp or release the filter screen mounting plate (7), thereby selectively sealing a designated filter screen on the filter screen mounting plate (7). A cleaning mechanism, located on the movable sealing unit, is used to backflush and clean the unsealed filter screen.

2. The coal slime filtration and dewatering device according to claim 1, characterized in that: The movable sealing unit includes: A connecting shell (4) is movably disposed at the end of the main body (1) of the device; The first sealing plate (15) is disposed on the surface of the connecting shell (4) near the filter mounting plate (7); The second sealing plate (11) is disposed on the surface of the guide tube (9) near the filter mounting plate (7); When the connecting shell (4) moves toward the main body (1) of the device, the first sealing plate (15) and the second sealing plate (11) together clamp the filter screen mounting plate (7) to achieve sealing of the specified filter screen; The top of the connecting shell (4) is provided with a first connecting block (3), and a guide rod (16) is provided through the first connecting block (3) to guide the movement of the connecting shell (4).

3. The coal slime filtration and dewatering device according to claim 2, characterized in that: It also includes a drive mechanism, which is connected to the connecting shell (4) and is used to control the movement of the connecting shell (4).

4. The coal slime filtration and dewatering device according to claim 3, characterized in that: The drive mechanism includes: Telescopic cylinder (13) is located at the bottom of the main body (1) of the device; The second connecting block (12) is located at the bottom of the connecting shell (4) and is connected to the output end of the telescopic cylinder (13).

5. A coal slime filtration and dewatering device according to claim 2, characterized in that: Cleanup agencies include: A pair of connecting plates (6) are provided on both sides of the outer side of the connecting shell (4); The jetting device (5) is located on the surface of the connecting plate (6) near the filter mounting plate (7).

6. The coal slime filtration and dewatering device according to claim 1, characterized in that: The bottom of the filter mounting plate (7) is provided with a slide rod (8), and the main body (1) of the device is provided with a slide rail or slide groove that is compatible with the slide rod (8), so that the filter mounting plate (7) can slide laterally.

7. The coal slime filtration and dewatering device according to claim 1, characterized in that: It also includes a pressure control component connected to the feed pipe (2) for maintaining system pressure during filtration and dewatering or for depressurizing when necessary. The pressure control component includes: A pressure valve (10) is provided on the feed pipe (2); A pressure relief valve (14) is provided on the feed pipe (2).

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