Flat plate rotary table type vacuum filter

Abstract

The utility model discloses a flat plate rotary table type vacuum filter which comprises a flat plate, and a baffle, a material distributing device, a washing device, a water washing device and a discharging device are sequentially arranged on the upper portion of the flat plate in the rotating direction of the flat plate. The washing device comprises a vortex-shaped flow slowing plate, the flow slowing plate, the bottom face of the flat plate, an outer side plate and an inner side plate correspondingly define a vortex-shaped multi-circle flow channel, a liquid inlet is formed in the outer side of the flow slowing plate, the flow slowing plate is further provided with a liquid outlet pipe shell, one end of the liquid outlet pipe shell extends to the center of the inner side of the flow slowing plate, and the other end of the liquid outlet pipe shell extends to the outer side of the flow slowing plate. The washing device further comprises a plurality of branch pipes which are distributed in a radial shape, and the branch pipes are provided with a plurality of washing nozzles which correspondingly stretch into all the circles of flow channels. The washing device is optimized and improved, so that washing liquid can be in full contact with filtrate, the washing effect is better, the mother liquid area and the strong filtrate area are partitioned through the blocking effect of the flow slowing plate, and the filtrate is prevented from flowing mutually.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum filters, and specifically relates to a flat plate rotary table type vacuum filter. Background Art

[0002] The flat plate filter is a key device in the alumina production process, mainly used for filtering and separating aluminum hydroxide from sodium aluminate solution, thereby reducing its water content and floating alkali content and improving the performance and quality of aluminum hydroxide. The flat plate filter is provided with a feeding area, a vacuum area, a washing area, and a discharging area, and uses the vacuum suction filtration method for solid-liquid separation. Then, the separated particles are washed, scraped and conveyed, and then enter the next cycle.

[0003] The patent with the authorization announcement number CN217490017U discloses a vacuum filter including a flat plate, a rotating shaft, a filter cloth, a discharging device, and a first washing device. The flat plate includes through holes, and the rotating shaft is connected to the flat plate. The filter cloth covers the through holes and is used for filtering materials. The discharging device is used to remove materials on the filter cloth. The first washing device is arranged adjacent to the discharging device along the rotation direction of the flat plate, and the first washing device is used to separate at least part of the residual materials on the filter cloth from the filter cloth. Its first washing device and second washing device only spray washing liquid into the filtrate through branch pipes. The filtrate is flowing, and the contact time between the filtrate and the washing liquid is short. The bottom filtrate may not contact the washing liquid, resulting in insufficient washing and unsatisfactory use effect, which needs to be improved. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a flat plate rotary table type vacuum filter. By optimizing and improving the washing device, the washing liquid can be fully contacted with the filtrate, and the washing effect is better. Through the blocking effect of the flow retarder plate, the partition of the mother liquor area and the strong filtrate area is realized, and the mutual penetration of the filtrate is avoided, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A flat plate rotary table type vacuum filter, including a flat plate, a baffle, a cloth feeding device, a washing device, a water washing device, and a discharging device are sequentially arranged on the upper part of the flat plate along its rotation direction;

[0006] The washing device includes a flow retarder plate in a vortex shape. The flow retarder plate and the bottom surface, outer side plate, and inner side plate of the flat plate correspondingly enclose a multi-turn flow channel in a vortex shape. An inlet for liquid is arranged on the outer side of the flow retarder plate. The flow retarder plate is also provided with a liquid outlet pipe shell. One end of the liquid outlet pipe shell extends to the center of the inner side of the flow retarder plate, and the other end of the liquid outlet pipe shell extends to the outer side of the flow retarder plate. The washing device also includes a plurality of branch pipes distributed radially. The branch pipes are provided with a plurality of washing nozzles correspondingly extending into each turn of the flow channel.

[0007] Preferably, the liquid inlet of the flow retarder plate is close to the outer plate of the flat plate and corresponds to the filtrate flow direction.

[0008] Preferably, the discharging device is used to remove the materials on the flat plate filter cloth, and the discharging device is a screw discharger.

[0009] Preferably, the feeding device is used to transfer the materials onto the flat plate filter cloth.

[0010] Preferably, at least one set of washing devices is provided.

[0011] Preferably, the water washing device is used to wash the materials on the flat plate filter cloth. The water washing device includes a long water washing pipe and a plurality of short water washing pipes communicated with the long water washing pipe. Small holes are uniformly distributed on the lower part of the pipe wall of the short water washing pipes.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: By optimizing and improving the washing device, the filtrate flows in the multi-loop channels of the flow retarder plate, extending the flow time of the filtrate in the channels. By injecting the washing liquid into the multi-loop channels, the washing liquid can be fully contacted with the filtrate. After washing, the filtrate flows into the inner side of the flow retarder plate and then flows out from the liquid outlet pipe shell, with better washing effect. Through the blocking effect of the flow retarder plate, the partition of the mother liquid area and the strong filtrate area is realized, avoiding the mutual penetration of the filtrate, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a top view of the washing device of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the washing device of the present utility model.

[0016] In the figure: 1 flat plate, 2 discharging device, 3 baffle, 4 feeding device, 5 washing device, 5.1 flow retarder plate, 5.2 channel, 5.3 liquid outlet pipe shell, 5.4 branch pipe, 6 water washing device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model can be explained in detail through the following embodiments. The purpose of disclosing the present utility model is to protect all technical improvements within the scope of the present utility model. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or position relationship, they are only corresponding to the drawings of the present application for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation.

[0018] Please refer to Figures 1-3, the present utility model provides a technical solution: a flat disk rotary vacuum filter, which includes a flat disk 1. Along the rotation direction of the flat disk 1, a baffle 3, a cloth feeding device 4, a washing device 5, a water washing device 6 and a discharging device 2 are sequentially arranged on the upper part of the flat disk 1;

[0019] The washing device 5 includes a swirl-shaped flow retarder plate 5.1. The flow retarder plate 5.1 and the bottom surface, outer side plate and inner side plate of the flat disk 1 correspondingly enclose a multi-turn flow channel 5.2 in a swirl shape. A liquid inlet is arranged on the outer side of the flow retarder plate 5.1. The flow retarder plate 5.1 is also provided with a liquid outlet pipe shell 5.3. One end of the liquid outlet pipe shell 5.3 extends to the inner center of the flow retarder plate 5.1, and the other end of the liquid outlet pipe shell 5.3 extends to the outer side of the flow retarder plate 5.1. The washing device 5 also includes a plurality of branch pipes 5.4 distributed radially. The branch pipes 5.4 are provided with a plurality of washing nozzles correspondingly extending into each turn of the flow channel 5.2;

[0020] It can be understood that by setting the swirl-shaped flow retarder plate 5.1, the filtrate flows in the multi-turn flow channel 5.2 in the flow retarder plate 5.1, which prolongs the flow time of the filtrate in the flow channel 5.2. By injecting washing liquid into the multi-turn flow channel 5.2, the radially distributed branch pipes 5.4 can cover each turn of the flow channel 5.2 to wash the filtrate in each turn of the flow channel 5.2, increasing the washing contact time, so that the washing liquid and the filtrate can be fully contacted. After being washed, the filtrate flows into the inner side of the flow retarder plate 5.2 and then flows out from the liquid outlet pipe shell 5.3, and the washing effect is better;

[0021] It should be noted that another function of the flow retarder plate 5.1 is to play a blocking role, realizing the partition of the mother liquor area and the strong filtrate area, avoiding the mutual mixing of the filtrate, and having a good use effect;

[0022] Furthermore, the liquid inlet of the flow retarder plate 5.1 is close to the outer side plate of the flat disk 1 and corresponds to the filtrate flow direction, and the filtrate flows into the flow channel 5.2 through the liquid inlet flow channel;

[0023] Specifically, the discharging device 2 is used to remove the materials on the filter cloth of the flat disk 1, and the discharging device 2 is a screw discharger; the cloth feeding device 4 is used to transport the materials onto the filter cloth of the flat disk 1;

[0024] Furthermore, at least one group of washing devices 5 is provided. In this embodiment, two groups of washing devices 5 are provided to ensure the washing effect;

[0025] Specifically, the water washing device 6 is used to wash the materials on the filter cloth of the flat disk 1. The water washing device 6 includes a water washing long pipe and a plurality of water washing short pipes communicated with it. Small holes are uniformly distributed on the lower part of the pipe wall of the water washing short pipes to wash the filter cloth.

[0026] The parts not described in detail in this utility model are prior art. For those skilled in the art, it is obvious that this utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, aiming to include all changes falling within the meaning and scope of equivalent elements in the content of this utility model.

Claims

1. A flat disk rotary table vacuum filter, comprising a flat disk (1), characterized in that: Above the flat plate (1), a baffle (3), a feeding device (4), a washing device (5), a water washing device (6) and a discharging device (2) are successively arranged along its rotation direction; The washing device (5) includes a slow flow plate (5.1) in a vortex shape. The slow flow plate (5.1) and the bottom surface, outer side plate and inner side plate of the flat plate (1) correspondingly enclose a multi-loop flow channel (5.2) in a vortex shape. A liquid inlet is arranged on the outer side of the slow flow plate (5.1). The slow flow plate (5.1) is also provided with a liquid outlet pipe shell (5.3). One end of the liquid outlet pipe shell (5.3) extends to the inner side center of the slow flow plate (5.1), and the other end of the liquid outlet pipe shell (5.3) extends to the outer side of the slow flow plate (5.1). The washing device (5) further includes a plurality of branch pipes (5.4) distributed radially. The branch pipes (5.4) are provided with a plurality of washing nozzles correspondingly extending into each loop of the flow channel (5.2).

2. The flat-plate rotary table type vacuum filter according to claim 1, wherein: The liquid inlet of the slow flow plate (5.1) is close to the outer side plate of the flat plate (1) and corresponds to the filtrate flow direction.

3. The flat disk rotary table type vacuum filter according to claim 1, characterized in that: The discharging device (2) is used to remove the materials on the filter cloth of the flat plate (1), and the discharging device (2) is a screw discharger.

4. A flat disk rotary table vacuum filter according to claim 1, characterized in that: The feeding device (4) is used to transport the materials onto the filter cloth of the flat plate (1).

5. A flat disk rotary table vacuum filter according to claim 1, characterized in that: At least one group of the washing devices (5) is provided.

6. A flat disk rotary table vacuum filter according to claim 1, characterized in that: The water washing device (6) is used to wash the materials on the filter cloth of the flat plate (1). The water washing device (6) includes a long water washing pipe and a plurality of short water washing pipes communicated with the long water washing pipe. Small holes are uniformly distributed on the lower part of the pipe wall of the short water washing pipes.

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