Vacuum box structure of belt filter

Abstract

The utility model relates to a vacuum box structure of a belt filter, which comprises a vacuum box and filter cloth moving in a matched manner above the vacuum box, the filter cloth adopts a closed winding belt-shaped structure, the upper half part of the filter cloth is provided with a horizontal section with a horizontal surface, and the vacuum box is arranged below the filter cloth. The vacuum box and the filter cloth are attached to each other to form a closed space of a vacuum environment, a basket pocket and a torrent plate are arranged in the vacuum box, the torrent plate is located above the basket pocket, an inclined angle is formed between the torrent plate and the horizontal direction, and a water outlet is formed in the bottom of the vacuum box. Due to the adoption of the structural design of the torrent plate, liquid falling on the smooth surface can be quickly discharged, the drainage speed is high, and the drainage speed is increased. The basket pocket is used in cooperation with a torrent plate, and the effect is more remarkable.

Description

Technical Field

[0001] The utility model relates to the field of mineral processing equipment, in particular to a vacuum box structure of a belt filter. Background Art

[0002] Feldspar is widely distributed in the Earth's crust. As a rock-forming mineral with important industrial value, it is widely used in industries such as glass, ceramics, and refractory materials. The better its quality, the higher its application value. Feldspar accounts for approximately 70% of the total product and is the main product of production. During the ore beneficiation process, to ensure the required slurry mass fraction during leaching, a concentration operation is usually performed before leaching. The slurry after leaching and the slurry after chemical precipitation must undergo solid-liquid phase separation to meet the requirements of subsequent operations. Vacuum filters are commonly used equipment for solid-liquid separation processes that utilize a pressure difference across the filter medium. Belt vacuum filters, also known as horizontal belt or rubber belt vacuum filters, are structurally characterized by a moving seal between the vacuum box and the filter belt, with the filter belt moving on the vacuum box.

[0003] Belt filters offer advantages such as a simple structure, high dehydration efficiency, large processing capacity, low energy consumption, low noise, a high degree of automation, continuous operation, and ease of maintenance. Their cost and operating expenses are over 30% lower than those of plate and frame filter presses. However, the vacuum box of existing belt filters suffers from an uneven inner wall. During use, liquid drawn in by vacuum pressure cannot be quickly drained away, instead clinging to the sidewalls and forming residue, negatively impacting the cleanliness of the vacuum box. Furthermore, long-term use of the vacuum box can produce residue that can affect the flow of drainage pipes within the box. Utility Model Content

[0004] In view of the fact that the liquid in the vacuum box of the above-mentioned existing belt filter cannot be discharged quickly, which has an adverse effect on the cleanliness inside the vacuum box and affects the fluidity of the drainage pipe in the box, the applicant has provided a vacuum box structure of a belt filter with a rational structure, which can use a smooth rapids plate to increase the drainage speed and prevent the drainage pipe in the box from being blocked.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A vacuum box structure of a belt filter includes a vacuum box and a filter cloth that moves in coordination above the vacuum box. The filter cloth adopts a closed and wound belt structure. The upper half of the filter cloth has a horizontal section with a horizontal surface. The vacuum box is arranged below the filter cloth. The vacuum box and the filter cloth fit together to form a closed space with a vacuum environment. A basket and a rapids plate are provided inside the vacuum box. The rapids plate is located above the basket and is inclined at an angle to the horizontal direction. A drain is provided at the bottom of the vacuum box.

[0007] As a further improvement of the above technical solution:

[0008] The vacuum boxes are arranged in multiple rows and are all attached to the lower surface of the horizontal section of the filter cloth.

[0009] The vacuum box adopts a rectangular box structure with a square cavity inside.

[0010] The vacuum box is made of stainless steel.

[0011] The drain port is located at one side of the bottom of the vacuum box, and the drain port is communicated with the drain pipe.

[0012] The water outlet of the vacuum box is located at one side of the bottom of the vacuum box and cooperates with the side end of the rapids plate.

[0013] The basket pocket adopts a basket structure with an inclined opening.

[0014] A plurality of supporting column feet are installed on the lower surface of the rapids board, and the plurality of supporting column feet gradually rise in the horizontal direction so that the rapids board forms an inclined slope structure.

[0015] The inclination angle of the jet board to the horizontal direction ranges from 2° to 8°.

[0016] The upper surface of the rapids plate adopts a smooth and clean surface with a surface roughness of Ra≤1.6.

[0017] The beneficial effects of the utility model are as follows:

[0018] This utility model utilizes a rapid flow plate design, with a smooth surface that allows any liquid that falls onto it to be quickly drained, improving drainage speed. The basket, when used in conjunction with the rapid flow plate, achieves even greater effectiveness. The basket also provides a filtering function, preventing clogging of the drain pipe. The rapid flow plate and basket, when used together, ensure fluid flow within the drainage pipe within the vacuum box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the belt filter of the utility model.

[0020] Figure 2 It is a cross-sectional schematic diagram of the vacuum box of the present invention.

[0021] Figure 3 Schematic diagram of the basket pocket of the present invention.

[0022] Description of the marks in the figure:

[0023] 1. Vacuum box; 2. Filter cloth; 3. Drive assembly; 4. Cloth pressing roller; 5. Water collecting tank; 6. Drain separator; 7. Vacuum pump; 8. Filter cloth deviation corrector; 9. Filter cloth tensioner; 10. Filter cloth cleaner; 11. Slurry; 12. Basket; 13. Rapids plate; 14. Support column foot. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0025] The present invention is described more fully below with reference to the accompanying drawings, which illustrate various aspects of the present invention. The present invention may be implemented in various forms and should not be construed as limited to the various aspects of the present invention presented in this implementation section. Unless otherwise defined, all terms used herein (including industry terms) have the same meanings as commonly understood by persons of ordinary skill in the art to which the present invention pertains.

[0026] Various aspects of the present invention will be described below with reference to the accompanying drawings, which are schematic illustrations of idealized configurations of the present invention. As such, variations in the shapes of these illustrations are to be expected, for example, as a result of manufacturing techniques and / or tolerances. The various aspects of the present invention shown in the drawings may not necessarily be drawn to scale. Furthermore, some of the drawings have been simplified for the sake of clarity. Consequently, the drawings may not depict all of the various components of a given apparatus (e.g., device) or method. Therefore, the components shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the precise shape of the components and are not intended to limit the scope of the present invention.

[0027] Reference Figures 1 to 3 As shown, the vacuum box structure of the belt filter described in the utility model includes a vacuum box 1 and a filter cloth 2 that moves in coordination with the vacuum box 1 above the vacuum box 1. The filter cloth 2 adopts a closed, wound belt structure. The upper half of the filter cloth 2 has a horizontal section with a horizontal surface. In this horizontal section, the lower surface of the filter cloth 2 forms a driving cooperation with the drive assembly 3, so that the entire filter cloth is circulated. The drive assembly 3 is a driving mechanism consisting of an active roller, a passive roller, a transmission belt, and a drive motor. The vacuum box 1 is arranged in a position within the drive assembly 3 below the filter cloth 2. The vacuum box 1 and the filter cloth 2 are attached to each other to form a closed space with a vacuum environment. The ore pulp 11 to be processed flows from an external discharge device to the horizontal section surface of the upper half of the filter cloth 2, and is then carried by the filter cloth 2 and driven forward by the filter cloth 2.

[0028] A cloth pressing roller 4 is provided at one end of the horizontal section of the filter cloth 2. The cloth pressing roller 4 is used to press the filter cloth 2 against the drive assembly 3 and to create a compressed fit between the filter cloth 2 and the vacuum box 1 to form a sealed chamber space. A filter cloth deviation corrector 8, a filter cloth tensioner 9, and a filter cloth cleaner 10 are also provided on the portion of the filter cloth 2 outside the horizontal section.

[0029] The filter cloth deviation corrector 8 is located on the left side of the horizontal section of the filter cloth 2. Since the filter cloth 2 is driven in a circular motion, the filter cloth deviation corrector 8 adjusts and corrects the filter cloth 2 during movement, preventing it from shifting during use and affecting normal operation. The filter cloth tensioner 9 is located in the lower half of the filter cloth 2. To prevent the filter cloth 2 from loosening, the filter cloth tensioner 9 tightens the filter cloth 2 during movement. The filter cloth cleaner 10 is located at the lower right side of the horizontal section and rinses and cleans the filter cloth 2 to prevent clogging of the filter pores, which could affect the vacuum drying effect. A high-pressure water jet is preferably used for the filter cloth cleaner 10.

[0030] Multiple vacuum boxes 1 are arranged side by side, each attached to the lower surface of the horizontal section of the filter cloth 2. The vacuum boxes 1 are rectangular boxes with a square interior cavity. The vacuum boxes 1 are preferably made of stainless steel. A drain port is provided at the bottom of the vacuum box 1, located on one side of the bottom. The drain port is connected to a drain pipe. The drain pipes on the multiple vacuum boxes 1 extend outward and connect to a water collection tank 5. The water collection tank 5 is connected to multiple drainage separators 6 via connecting pipes. The drainage separators 6 are connected to a vacuum pump 7 via connecting pipes.

[0031] During operation, the vacuum pump 7 evacuates the interior of the vacuum box 1. Under the action of the vacuum, the liquid components in the slurry 11 transmitted on the filter cloth 2 will be absorbed into the interior of the vacuum box 1 and discharged outward along the drainage pipe at the bottom of the vacuum box 1. It will be collected in the water collecting tank 5 and then separated into gas and liquid through multiple drainage separators 6. The final filtered liquid will be discharged to the outside.

[0032] A basket 12 and a rapids plate 13 are provided inside the vacuum box 1. The basket 12 adopts a basket structure with an inclined opening. The rapids plate 13 is located above the basket 12 and supported by the basket 12. A plurality of supporting column feet 14 are installed on the lower surface of the rapids plate 13. The plurality of supporting column feet 14 gradually rise in the horizontal direction so that the rapids plate 13 forms an inclined slope structure. The rapids plate 13 is inclined at an angle to the horizontal direction, and the inclination angle ranges from 2° to 8°. Such an inclination can accelerate the flow of the liquid falling thereon, so that it can quickly flow out from one side of the rapids plate 13. The drain of the vacuum box 1 is located on one side of the bottom of the vacuum box 1 and cooperates with the side end of the rapids plate 13, so that it can quickly discharge the liquid flowing down the rapids plate 13.

[0033] To address the problem of liquid retention caused by the rough inner wall of the vacuum box 1 in the prior art, the upper surface of the rapid flow plate 13 is smooth and clean, preferably with a surface roughness of Ra ≤ 1.6. This smooth surface allows any liquid that falls onto it to be quickly drained away. Furthermore, finishing only the upper surface of the rapid flow plate 13 is easier to achieve than finishing the inner wall of the vacuum box 1, minimizing manufacturing costs.

[0034] During implementation of the present invention, the vacuum box 1 and the filter cloth 2 are fitted together to form a closed space with a vacuum environment, and a vacuum pump 7 evacuates the interior of the vacuum box 1. The ore pulp 11 to be processed flows from an external discharge device to the horizontal surface of the upper half of the filter cloth 2, and is then carried and driven forward by the filter cloth 2. Under the action of the vacuum, the liquid components of the ore pulp 11 on the filter cloth 2 are absorbed into the interior of the vacuum box 1 and discharged outward along the drain pipe at the bottom of the vacuum box 1. They are collected in the water collection tank 5, and then separated into gas and liquid by multiple drainage separators 6. The final filtered liquid is discharged to the outside.

[0035] A basket 12 and a rapids plate 13 are provided inside the vacuum box 1. A plurality of support column feet 14 are gradually raised in the horizontal direction to form an inclined slope structure of the rapids plate 13, which can accelerate the flow of liquid falling thereon and make it flow out quickly from one side of the rapids plate 13. The drain port of the vacuum box 1 is located on one side of the bottom of the vacuum box 1 and cooperates with the side end of the rapids plate 13 to quickly discharge the liquid flowing down from the rapids plate 13. The upper surface of the rapids plate 13 adopts a smooth and clean surface so that the liquid falling thereon can be quickly drained away.

[0036] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A vacuum box structure of a belt filter, characterized in that: The invention comprises a vacuum box (1) and a filter cloth (2) which moves in cooperation with the vacuum box (1). The filter cloth (2) adopts a closed and wound belt structure. The upper half of the filter cloth (2) has a horizontal section with a horizontal surface. The vacuum box (1) is arranged below the filter cloth (2). The vacuum box (1) and the filter cloth (2) are attached to each other to form a closed space with a vacuum environment. A basket (12) and a rapids plate (13) are arranged inside the vacuum box (1). The rapids plate (13) is located above the basket (12) and is inclined at an angle to the horizontal direction. A water outlet is arranged at the bottom of the vacuum box (1).

2. The vacuum box structure of the belt filter according to claim 1, characterized in that: A plurality of vacuum boxes (1) are arranged side by side and are all attached to the lower surface of the horizontal section of the filter cloth (2).

3. The vacuum box structure of the belt filter according to claim 1, characterized in that: The vacuum box (1) adopts a rectangular box structure with a square cavity inside.

4. The vacuum box structure of the belt filter according to claim 1, characterized in that: The vacuum box (1) is made of stainless steel.

5. The vacuum box structure of the belt filter according to claim 1, characterized in that: The water outlet is located at one side of the bottom of the vacuum box (1), and the water outlet is communicated with a drainage pipe.

6. The vacuum box structure of the belt filter according to claim 1, characterized in that: The water outlet of the vacuum box (1) is located at one side of the bottom of the vacuum box (1) and cooperates with the side end of the rapids plate (13).

7. The vacuum box structure of the belt filter according to claim 1, characterized in that: The basket pocket (12) adopts a basket structure with an inclined opening.

8. The vacuum box structure of the belt filter according to claim 1, characterized in that: A plurality of supporting column feet (14) are installed on the lower surface of the rapid flow plate (13), and the plurality of supporting column feet (14) are gradually raised in a horizontal direction so that the rapid flow plate (13) forms an inclined slope structure.

9. The vacuum box structure of the belt filter according to claim 1, characterized in that: The range of the inclination angle of the rapids plate (13) to the horizontal direction is 2° to 8°.

10. The vacuum box structure of the belt filter according to claim 1, characterized in that: The upper surface of the rapids plate (13) is a smooth and clean surface with a surface roughness of Ra≤1.6.

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