Quick-release rotary table filter plate fixing structure

Abstract

The utility model discloses a quick detachable rotary table filter plate fixing structure, and belongs to the rotary table vacuum filter structure of solid -liquid separation equipment, and specifically is the filter unit structure of rotary table vacuum filter, the utility model discloses setting up the high board and the strength blind hole column on the filter disc body cavity bottom plate, first, use the pointed top bolt to connect the flange -punched filter plate and the field frame, and the threaded screw is closed on the cover -shaped nut, forms rigid piece and then rests on the high board, then, after the pointed top bolt passes through the connecting hole of the four corners of flange -punched filter plate, the soft gasket is sleeved and is screwed into the strength blind hole column, the pointed top bolt of the four corners of flange -punched filter plate of this structure is dismantled, and the filter disc body cavity bottom plate can be cleaned, the fastener has the strength difference, and the soft gasket and cover -shaped nut make the exposed thread section isolate material liquid and reduce the scale formation, reach quick detachable, not easy to bite dead thread, shorten the downtime maintenance cleaning time, improve the purpose of the whole machine driving rate.

Description

Technical Field

[0001] This utility model pertains to the structure of a rotary vacuum filter in solid-liquid separation equipment, specifically the filter unit structure of a rotary vacuum filter. Background Technology

[0002] Currently, large rotary vacuum filters used in the phosphate fertilizer and chemical industry in China are facing challenges due to process improvements and changes in material properties, especially with the application of hemihydrate and hemihydrate-dihydrate wet phosphoric acid production processes. The filter slurry is more prone to scaling and has stronger adhesion compared to the original dihydrate wet phosphoric acid production process. This results in scaling at the bottom of the chamber, clogging of the perforated filter plates, and caking of the filter cloth, leading to a decrease in operating rate and a rapid decline in filtration performance. Since the slurry is determined by the process characteristics and cannot be changed, improving the operating rate requires solving the problem of difficult disassembly and cleaning. Early perforated filter plates were flat and fixed to a grid support frame using numerous bolts evenly distributed around the perimeter and center. However, the grid... The support frame was welded and fixed to the bottom cavity, making disassembly and cleaning difficult. Subsequently, an independent support frame and folded perforated filter plate structure were developed, which relatively reduced the number of fixing bolts around the perforated filter plate. The fixing bolts basically act on both the perforated filter plate and the support frame at the same time, reducing the amount of disassembly work. The hollow bottom of the cavity facilitates cleaning. In practical applications, the perforated filter plate can be cleaned with high-pressure water or an impact hammer, but the fixing bolts are prone to seizing due to scale buildup. Therefore, an optimized filter plate fixing structure was designed, which can be disassembled more quickly to expose the bottom of the cavity, making the cleaning work faster, shortening downtime for maintenance and cleaning, and improving the overall machine uptime. Summary of the Invention

[0003] To address the problems existing in the prior art, this utility model provides a quick-release rotary table filter plate fixing structure. A raised plate and a strength blind hole post are installed on the bottom plate of the filter disc cavity. First, the perforated filter plate and the grid frame are connected using pointed bolts. The threads are then threaded through and sealed with cap nuts, forming a rigid component that rests on the raised plate. Next, pointed bolts are passed through the connecting holes at the four corners of the perforated filter plate, and soft washers are fitted before being screwed into the strength blind hole post. This structure only requires removing the pointed bolts at the four corners of the perforated filter plate to clean the bottom plate of the filter disc cavity. The fasteners have varying strengths, and the soft washers and cap nuts isolate the exposed threaded sections from the liquid, reducing scaling. This achieves quick disassembly, prevents thread seizing, shortens downtime for maintenance and cleaning, and improves the overall machine uptime.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a quick-release turntable filter plate fixing structure, consisting of a perforated filter plate, a grid frame, pointed bolts, high-strength blind hole columns, a shim plate, a soft washer, a cap nut, and a high-strength D-nut; the high-strength blind hole columns are welded to the four corners of the bottom plate of the filter disc cavity and correspond to the four corner connection holes of the perforated filter plate; the shim plate is evenly welded to the four perimeters of the bottom plate of the filter disc cavity; the high-strength D-nut is welded to the grid frame and corresponds to the connection holes of the perforated filter plate; the cap nut is screwed onto the exposed thread end of the pointed bolt after it passes through the high-strength D-nut; and the soft washer is placed on the high-strength blind hole column; installation... First, use a pointed bolt to pass through the connecting hole of the folded perforated filter plate and tighten it onto the strength D-nut. Then, screw a cap nut onto the exposed end. After the folded perforated filter plate and the grid frame are connected to form a rigid component, place it on the raised plate. Next, use a pointed bolt to pass through the connecting holes at the four corners of the folded perforated filter plate, put on a soft washer, and screw it into the strength blind hole column. The soft washer isolates the exposed thread section. The strength blind hole column and the raised plate have a simple structure and make it easier to clean the area around the bottom plate of the filter disc cavity. Using pointed bolts makes it easier to align and install. The strength blind hole column and the strength D-nut are made of materials with higher hardness than the pointed bolts to avoid thread seizing and damage to welded parts. Replacing the pointed bolts is more economical and convenient.

[0005] The aforementioned quick-release turntable filter plate fixing structure allows for cleaning of the filter plate cavity bottom plate by removing the pointed bolts at the four corners of the folded and punched filter plate. The fasteners have varying strengths, and the soft pads and cap nuts isolate the internal threads from the liquid, reducing scaling. This achieves the goals of quick disassembly, preventing thread seizing, shortening downtime for maintenance and cleaning, and increasing the overall machine uptime. Attached Figure Description

[0006] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0007] Figure 1 This is a schematic diagram of a quick-release turntable filter plate fixing structure; Figure 2 It is attached Figure 1 Enlarged view of part I in the image; Figure 3 It is attached Figure 1 The bottom view of part 2; Figure 4 It is attached Figure 1 The bottom view shows the distribution of parts 4 and 5. In the figure, a. filter disc cavity bottom plate, 1. folded perforated filter plate, 2. grid frame, 3. pointed bolt, 4. pad plate, 5. strength blind hole column, 6. soft washer, 7. cap nut, 21. strength D-shaped nut. Detailed Implementation

[0008] One embodiment of the quick-release turntable filter plate fixing structure consists of a folded perforated filter plate 1, a grid frame 2, pointed bolts 3, a shim plate 4, high-strength blind hole posts 5, soft washers 6, cap nuts 7, and high-strength D-shaped nuts 21. The high-strength blind hole posts 5 are welded to the four corners of the filter plate cavity bottom plate a, corresponding to the four corner connecting holes of the folded perforated filter plate 1. The shim plate 4 is evenly welded around the four perimeters of the filter plate cavity bottom plate a. The high-strength D-shaped nuts 21 are welded to the grid frame 2 and correspond to the folded perforated filter plate 1. The connecting holes of the perforated filter plate 1 correspond to the threaded exposed end of the pointed bolt 3 after it passes through the strength D-shaped nut 21. The soft washer 6 is placed on the strength blind hole post 5. After the pointed bolt 3 passes through the connecting hole of the perforated filter plate 1, it is tightened on the strength D-shaped nut 21. The exposed end is screwed with the pointed nut 7. The four sides of the grid frame 2 are placed on the raised plate 4. After the pointed bolt 3 passes through the connecting holes at the four corners of the perforated filter plate 1, the soft washer 6 is put on and screwed into the strength blind hole post 5.

[0009] The above description is only a specific embodiment of the present utility model, but the implementation of the present utility model is not limited thereto. Any changes or modifications made within the field of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A quick-release turntable filter plate fixing structure, comprising a folded perforated filter plate (1), a grid frame (2), pointed bolts (3), a raised plate (4), a high-strength blind hole column (5), a soft washer (6), a cap nut (7), and a high-strength D-shaped nut (21); characterized in that... The strength blind hole column (5) of the quick-release turntable filter plate fixing structure is welded to the four corners of the bottom plate (a) of the filter plate cavity. The shim plate (4) is evenly welded on the four periphery of the bottom plate (a) of the filter plate cavity. The cap nut (7) is screwed onto the exposed thread end of the pointed bolt (3) after it passes through the strength D-shaped nut (21). The soft washer (6) is placed on the strength blind hole column (5). The four periphery of the grid frame (2) rests on the shim plate (4). The strength blind hole column (5) and the strength D-shaped nut (21) are selected to have a higher material hardness than the pointed bolt (3).

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