A kind of mud filter device for leaf filter

Abstract

This utility model relates to the field of leaf filter technology and discloses a sludge removal and filtration device for a leaf filter, including a feed pipe and a discharge pipe. A three-way pipe is provided between the feed pipe and the discharge pipe. The three-way pipe includes a connecting pipe and a sampling pipe. The connecting pipe is installed between the feed pipe and the discharge pipe and is used to connect the feed pipe and the discharge pipe. The sampling pipe is fixed to the side of the connecting pipe and communicates with the inner cavity of the connecting pipe. A filter plate is installed inside the connecting pipe. This sludge removal and filtration device for a leaf filter is used as a secondary filtration unit of the leaf filter. It is mainly used to check the changes in the material inside the leaf filter, making it easy and quick to judge the changes in the solid content of the material, avoiding the material solution from clumping or becoming too dilute. At the same time, it is convenient to check the filter cloth and filter plate inside the leaf filter for detachment, preventing impurities other than liquids from entering the next process, thus facilitating the production and preparation of alumina.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a mud discharge filtering device for a leaf filter. Background Art

[0002] Leaf filter is a kind of filtering equipment that can be widely used in fine filtration operation units. It is mainly used in chemical industries such as sugar industry, alumina, vanadium extraction from steel slag, etc. It has a high degree of automation, good filtrate indicators and low operating costs. It is one of the more advanced equipment in solution fine filtration units. In the existing alumina preparation process, due to the lack of effective secondary filtration protection devices, the leaf filter will follow the sodium aluminate solution into the lower process after the internal filter cloth filter plate is damaged or falls off, and the filter cloth filter plate cannot effectively filter the sodium aluminate solution after it is damaged or falls off, which affects the subsequent alumina preparation. In addition, it is difficult to detect the changes in the materials inside the leaf filter when the leaf filter is used. At present, the way to judge the changes in the materials of the sodium aluminate solution is usually to take samples for inspection at the solution outflow position of the leaf filter. This detection method takes a long time and reacts slowly, which makes the operation of the main control room lack predictability. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a mud discharge filtering device for a leaf filter, which is used as a secondary filtering unit of the leaf filter and is mainly used to check the changes of materials in the leaf filter, so as to facilitate the simple and quick judgment of the changes in the solid content of the materials and avoid the agglomeration of the material solution or the excessive dilution of the solution. At the same time, it is convenient to check the shedding of the filter cloth and filter plate inside the leaf filter and prevent the sundries other than the liquid from entering the next process, which is convenient for the production and preparation of alumina and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mud filtering device for a leaf filter, comprising a feed pipe and a discharge pipe, a three-way pipe is arranged between the feed pipe and the discharge pipe, the three-way pipe comprises a connecting pipe and a sampling pipe, the connecting pipe is installed between the feed pipe and the discharge pipe and is used for connecting the feed pipe and the discharge pipe, the sampling pipe is fixed on the side of the connecting pipe and is connected with the inner cavity of the connecting pipe, a filter plate is installed in the connecting pipe, the filter plate is located between the sampling pipe and the discharge pipe, a fixed pipe is installed below the sampling pipe, and a first valve is installed on the fixed pipe.

[0005] As a preferred technical solution of the utility model, a discharge pipe communicating with the inner cavity of the sampling pipe is installed on the side of the sampling pipe, and a second valve is installed on the discharge pipe.

[0006] As a preferred technical solution of the utility model, a collecting drain is arranged directly below the fixed pipe, and a reflux pipe communicating with the inner cavity of the collecting drain is installed at the bottom of the collecting drain.

[0007] As a preferred technical solution of the utility model, a plurality of filter plates are provided, and a positioning plate for positioning the filter plates is fixed in the communicating pipe.

[0008] As a preferred technical solution of the utility model, a cleaning port connected to its inner cavity is opened on the side of the connecting pipe, and a fixing plate is arranged on the side of the connecting pipe near the cleaning port, a sealing card plate for sealing the cleaning port is fixed on the side of the fixing plate, and a restraining belt for positioning the fixing plate is arranged on the outside of the connecting pipe.

[0009] As a preferred technical solution of the utility model, the ends of the feed pipe, the ends of the discharge pipe and both ends of the connecting pipe are fixed with connecting flanges, and the end of the sampling pipe away from the connecting pipe and the end of the fixed pipe close to the sampling pipe are also fixed with connecting flanges, and the two adjacent connecting flanges are fixed by bolts.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The mud discharge filtering device for a leaf filter illustrated in the utility model is used as a secondary filtering unit of the leaf filter, and is mainly used to check the changes of materials in the leaf filter, so as to facilitate a simple and quick judgment of changes in the solid content of the materials, avoid agglomeration of the material solution or excessive dilution of the solution, and facilitate the detection of the shedding of the filter cloth and filter plate inside the leaf filter, thereby preventing debris other than liquid from entering the next process, and facilitating the production and preparation of alumina. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0014] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of;

[0015] Figure 4 It is a structural schematic diagram of the filter plate in the utility model.

[0016] In the figure: 1 feed pipe, 2 discharge pipe, 3 connecting pipe, 4 sampling pipe, 5 filter plate, 6 positioning plate, 7 fixing plate, 8 sealing card plate, 9 restraining belt, 10 fixing pipe, 11 first valve, 12 discharge pipe, 13 second valve, 14 collecting leak, 15 reflux pipe. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 The utility model provides a technical solution: a mud filtering device for a leaf filter, comprising a feed pipe 1 and a discharge pipe 2, a three-way pipe is arranged between the feed pipe 1 and the discharge pipe 2, the external material solution is transported to the three-way pipe through the feed pipe 1, and then discharged through the discharge pipe 2 for the next process, the three-way pipe comprises a connecting pipe 3 and a sampling pipe 4, the connecting pipe 3 is installed between the feed pipe 1 and the discharge pipe 2 and is used for the connection between the feed pipe 1 and the discharge pipe 2, the end of the feed pipe 1, the end of the discharge pipe 2 and both ends of the connecting pipe 3 are fixed with connecting flanges, and the two adjacent connecting flanges are fixed by bolts.

[0019] The sampling pipe 4 is fixed on the side of the connecting pipe 3 and is connected with the inner cavity of the connecting pipe 3. A filter plate 5 is installed in the connecting pipe 3. The filter plate 5 is located between the sampling pipe 4 and the discharge pipe 2. A fixed pipe 10 is installed below the sampling pipe 4. A connecting flange is also fixed at one end of the sampling pipe 4 away from the connecting pipe 3 and one end of the fixed pipe 10 close to the sampling pipe 4. The two adjacent connecting flanges are fixed by bolts.

[0020] A first valve 11 is installed on the fixed pipe 10. When the material solution flows through the connecting pipe 3, part of the solution is stored in the sampling pipe 4. After the material solution is stopped from being input into the feed pipe 1, the material in the sampling pipe 4 can be discharged through the fixed pipe 10 by opening the first valve 11. According to the solid content of the material in the material solution discharged from the fixed pipe 10, the solid content change of the material in the leaf filter can be quickly judged, providing a reference for the operation of the main control room; at the same time, the setting of the filter plate 5 is convenient for checking the shedding of the filter cloth and filter plate inside the leaf filter. If the filter cloth and filter plate fall off, the filter plate 5 intercepts it, and abnormal materials or debris will be found in the material solution discharged from the fixed pipe 10, effectively preventing debris other than liquid from entering the next process.

[0021] A discharge pipe 12 connected to its inner cavity is installed on the side of the sampling pipe 4, and a second valve 13 is installed on the discharge pipe 12. A collecting leak 14 is arranged directly below the fixed pipe 10. By opening the second valve 13, part of the solution sampled in the sampling pipe 4 can be discharged through the discharge pipe 12 to avoid excessive overflow and waste of solution flowing into the collecting leak 14 during sampling and polluting the environment. In addition, the sampling pipe 4 is prone to agglomeration after long-term use. When it needs to be cleaned, all the material solution collected in the sampling pipe 4 can be discharged through the discharge pipe 12, and then the first valve 11 on the fixed pipe 10 is opened to clean the sampling pipe 4 to meet the usage requirements in different situations.

[0022] A reflux pipe 15 connected to the inner cavity of the collecting leak 14 is installed at the bottom of the collecting leak 14. Preferably, a valve is installed on the reflux pipe 15. The material solution falls into the collecting leak 14 after being discharged through the fixed pipe 10, and is collected and processed by the collecting leak 14. Personnel can judge the working condition of the leaf filter at any time through the material solution collected in the collecting leak 14. Compared with the laboratory, this method is faster; it should be noted that the solution in the feed pipe 1 is sodium aluminate solution, and the feed pipe 1 is connected to the dense phase outlet of the leaf filter, and the solutions in the discharge pipe 2, the discharge pipe 12 and the reflux pipe 15 are all discharged into the filter cake tank of the leaf filter.

[0023] A plurality of filter plates 5 are provided to improve the filtering effect, and a positioning plate 6 for positioning the filter plates 5 is fixed in the communicating pipe 3 . The positioning plate 6 reserves a space between two adjacent filter plates 5 , which is convenient for the installation and use of the filter plates 5 .

[0024] A cleaning port connected to the inner cavity of the connecting pipe 3 is provided on the side of the connecting pipe 3. The setting of the cleaning port is convenient for cleaning and replacement of the filter plate 5, and is also convenient for cleaning foreign matter filtered out by the filter plate 5. A fixing plate 7 is provided on the side of the connecting pipe 3 near the cleaning port. A sealing card plate 8 for sealing the cleaning port is fixed on the side of the fixing plate 7. The fixing plate 7 is convenient for the installation and setting of the sealing card plate 8. The set sealing card plate 8 is used for sealing the cleaning port to ensure the sealing effect when the connecting pipe 3 is in use. A restraining belt 9 for positioning the fixing plate 7 is provided on the outside of the connecting pipe 3. The sealing card plate 8 on the side of the fixing plate 7 is fixed at the cleaning port by the set restraining belt 9, which is convenient for the installation and use of the sealing card plate 8. The restraining belt 9 includes but is not limited to a belt or a wire.

[0025] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A sludge filtering device for a leaf filter, comprising a feed pipe (1) and a discharge pipe (2), characterized in that: A three-way pipe is arranged between the feed pipe (1) and the discharge pipe (2), and the three-way pipe comprises a connecting pipe (3) and a sampling pipe (4). The connecting pipe (3) is installed between the feed pipe (1) and the discharge pipe (2) and is used for connecting the feed pipe (1) and the discharge pipe (2). The sampling pipe (4) is fixed to the side of the connecting pipe (3) and is connected to the inner cavity of the connecting pipe (3). A filter plate (5) is installed in the connecting pipe (3), and the filter plate (5) is located between the sampling pipe (4) and the discharge pipe (2). A fixed pipe (10) is installed below the sampling pipe (4), and a first valve (11) is installed on the fixed pipe (10).

2. The mud filter device for leaf filter according to claim 1, characterized in that: A discharge pipe (12) communicating with the inner cavity of the sampling pipe (4) is installed on the side of the sampling pipe (4), and a second valve (13) is installed on the discharge pipe (12).

3. The mud filter device for leaf filter according to claim 1, characterized in that: A collecting drain (14) is arranged directly below the fixed pipe (10), and a reflux pipe (15) communicating with the inner cavity of the collecting drain (14) is installed at the bottom of the collecting drain (14).

4. The mud filter device for leaf filter according to claim 1, characterized in that: A plurality of filter plates (5) are provided, and a positioning plate (6) for positioning the filter plates (5) is fixed in the communicating pipe (3).

5. The mud filter device for leaf filter according to claim 1, characterized in that: The communicating pipe (3) has a cleaning port in communication with its inner cavity on its side, and a fixing plate (7) is provided on the side of the communicating pipe (3) near the cleaning port, a sealing clamping plate (8) for sealing the cleaning port is fixed on the side of the fixing plate (7), and a restraining belt (9) for positioning the fixing plate (7) is provided on the outside of the communicating pipe (3).

6. The mud filter device for leaf filter according to claim 1, characterized in that: The ends of the feed pipe (1), the ends of the discharge pipe (2) and both ends of the connecting pipe (3) are all fixed with connecting flanges, and the end of the sampling pipe (4) away from the connecting pipe (3) and the end of the fixed pipe (10) close to the sampling pipe (4) are also fixed with connecting flanges, and two adjacent connecting flanges are fixed by bolt connection.

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