Belt filter press

Abstract

The utility model discloses a belt filter press which comprises a rack, a row of first rollers which are horizontally arranged are arranged on the rack, a second roller and a compression roller group which are arranged in a wave manner are arranged in the rack, a guide frame and a material guide frame which is positioned below the guide frame are arranged in the rack, and an upper driving roller is arranged on the right side of the rack. According to the utility model, sludge is uniformly divided, then falls into the wedge-shaped feeding area, inclines downwards and gradually enters the extrusion area formed by the outer sides of the upper pressing belt and the lower filtering belt along with the lower filtering belt, and water is extruded, penetrates through the lower filtering belt and is discharged downwards by utilizing the wave-shaped extrusion area formed by the pressing roller group; the extruded sludge is conveyed to the right assembly and finally discharged through a separation area between an upper pressing belt and a lower filtering belt on the right side of the pressing roller set, filtering separation is completed, and therefore the device has the advantages that the sludge is evenly dispersed, the extrusion filtering effect is guaranteed, and meanwhile a filtering net is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of belt filter presses, in particular to a belt filter press. Background Art

[0002] A belt filter press is a solid-liquid separation device primarily used in sludge treatment and dewatering processes. It separates sludge into cake and water. The cake can be directly transported, landfilled, or used for other industrial purposes, while the water can be recycled. Belt filter presses offer high processing capacity, high dewatering efficiency, a high degree of automation, and a long service life, making them ideal equipment for environmental management and resource recovery.

[0003] Its working principle is that after the concentrated sludge is fully mixed with a certain concentration of flocculant in a static and dynamic mixer, the tiny solid particles in the sludge aggregate into larger flocculent clumps, and free water is separated at the same time. The flocculated sludge is transported to the filter belt for concentrated gravity dehydration. Under the action of gravity, the free water is separated to form stagnant sludge, which is then clamped between the upper and lower mesh belts. Under the action of extrusion pressure and shear force from small to large in the wedge-shaped pre-pressure area, low pressure area and high pressure area, the sludge is gradually squeezed to achieve the maximum separation of mud and water, and finally form a filter cake for discharge.

[0004] However, the current belt filter press usually feeds the sludge directly from the upper part of the upper extrusion part during feeding. The sludge is easily accumulated and dispersed unevenly, resulting in excessive concentration of sludge when the wedge-shaped area enters the extrusion area. This not only affects the extrusion effect, but also causes damage to the filter screen due to the high pressure generated in the sludge concentration area, resulting in poor use effect. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a belt filter press to solve the background technical problems.

[0006] In order to achieve the above-mentioned purpose, the present utility model adopts the following technical solutions.

[0007] A belt filter press comprises a frame, wherein a row of horizontally arranged first rotating rollers is installed on the frame, a wavy second rotating roller and a pressure roller group are installed inside the frame, a guide frame and a material guide frame located below the guide frame are installed inside the frame, an upper driving roller is installed on the right side of the frame, two lower driving rollers are installed on the left side of the frame, a guide roller is installed below the inside of the frame, the outer sides of the first rotating roller and the upper driving roller are connected by a closed upper pressure belt, the outer sides between the guide roller and the two lower driving rollers are connected by a closed lower filter belt, and a section of the upper pressure belt and the lower filter belt are interlaced and matched along the outer waves of the wavy second rotating roller and the pressure roller group.

[0008] As a further description of the above technical solution: the top of the guide frame is fixedly connected with vertical plates arranged at equal distances, and the height of the vertical plates gradually decreases from left to right to form an arc surface.

[0009] As a further description of the above technical solution: a dividing rod is fixedly connected to the inside of the guide frame, an inclined guide plate is fixedly connected to the right side of the guide frame, and the right side of the inclined guide plate extends to the left side gap between the upper pressure belt and the lower filter belt.

[0010] As a further description of the above technical solution: the top of the frame is fixedly connected with equidistantly arranged clamping rods, and the bottom of the clamping rods is fixedly connected with equidistantly arranged dividing blocks.

[0011] As a further description of the above technical solution: a first spray pipe is fixedly installed on the left side of the frame, and the nozzle of the first spray pipe is facing the lower filter belt. A second spray pipe is fixedly installed on the top of the frame, and the nozzle of the second spray pipe is facing the upper pressure belt.

[0012] As a further description of the above technical solution: a discharge guide plate is fixedly connected to the right side of the frame, and the discharge guide plate is located on the outside of the lower filter belt. A scraper is fixedly connected to the right side of the frame, and one side of the scraper is in sliding contact with the outside of the upper pressure belt.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] This solution uses the dividing rods and inclined guide plates on the guide frame as well as the clamping rods and dividing blocks to achieve efficient dispersion of the sludge, making it spread more evenly and improving the filter pressing effect. The device thus has the advantages of evenly dispersing the sludge, ensuring the squeezing and filtration effect, and protecting the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0016] Figure 2 This is a schematic diagram of the top structure of the utility model;

[0017] Figure 3 It is a partial three-dimensional structural diagram of the utility model;

[0018] Figure 4 It is a partial top view structural diagram of the utility model.

[0019] Description of the numbers in the figure:

[0020] 1. Frame; 2. First rotating roller; 3. Second rotating roller; 4. Pressing roller group; 5. Guide frame; 51. Vertical plate; 52. Arc surface; 6. Material guide frame; 61. Splitting rod; 62. Inclined guide plate; 7. Upper driving roller; 8. Lower driving roller; 9. Guide roller; 10. Upper pressing belt; 11. Lower filter belt; 12. Clamping rod; 13. Material dividing block; 14. First spray pipe; 15. Second spray pipe; 16. Scraper; 17. Discharge guide plate. DETAILED DESCRIPTION

[0021] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0022] The technical solutions specifically implemented in this utility model are as follows:

[0023] See also Figures 1 to 4 In the utility model, a belt filter press includes a frame 1, on which a row of horizontally arranged first rollers 2 are installed, and a wavy second roller 3 and a pressure roller group 4 are installed inside the frame 1. A guide frame 5 and a material guide frame 6 located below the guide frame 5 are installed inside the frame 1. An upper driving roller 7 is installed on the right side of the frame 1, and two lower driving rollers 8 are installed on the left side of the frame 1. A guide roller 9 is installed at the bottom of the frame 1. The outer sides of the first roller 2 and the upper driving roller 7 are connected by a closed upper pressure belt 10 for transmission, and the outer sides between the guide roller 9 and the two lower driving rollers 8 are connected by a closed lower filter belt 11 for transmission. A section of the upper pressure belt 10 and the lower filter belt 11 are interlaced and matched along the outer waves of the wavy second roller 3 and the pressure roller group 4.

[0024] In the present invention, the frame 1 is used as the main body of the device support. When in use, the sludge is thrown into the upper surface of the upper pressure belt 10 from the top, and the upper drive roller 7 and the lower drive roller 8 are started to drive the upper pressure belt 10 and the lower filter belt 11 to run synchronously. The sludge is driven to the left by the upper pressure belt 10 and then falls into the inside of the guide frame 6. It is divided and evenly falls to the surface of the lower filter belt 11 below. The lower filter belt 11 passes through the guide frame 5 and tilts downward to form a wedge-shaped feeding area between the upper pressure belt 10 at the bottom of the second roller 3. After the sludge is evenly divided, it falls into the inside of the wedge-shaped feeding area and tilts downward as the lower filter belt 11 gradually enters the squeezing area composed of the outer sides of the upper pressure belt 10 and the lower filter belt 11, and the pressure roller group 4 is used to form a wave-shaped In the squeezing area, the water is squeezed down and passes through the lower filter belt 11 to be discharged downwardly. The squeezed sludge is transported to the right component and finally passes through the separation area between the upper pressing belt 10 and the lower filter belt 11 on the right side of the pressing roller group 4 to be discharged, completing the filtration separation, thereby realizing that the device has the advantages of uniformly dispersing the sludge, ensuring the squeezing and filtration effect, and protecting the filter screen at the same time, solving the problem in the prior art that the sludge is generally fed directly from above the upper squeezing part during feeding, and the sludge is easily accumulated and dispersed unevenly, resulting in the sludge being too concentrated when entering the squeezing area in the wedge-shaped area, which not only affects the squeezing effect, but also causes damage to the filter screen due to excessive pressure in the sludge concentration area due to the high pressure generated, resulting in poor use effect.

[0025] See also Figure 1 and Figure 3 , wherein: the top of the guide frame 5 is fixedly connected with vertical plates 51 arranged at equal distances, and the height of the vertical plates 51 gradually decreases from left to right to form an arc surface 52.

[0026] In the present invention, a material guiding slope is formed by the vertical plate 51 and the arc surface 52, so that the sludge can smoothly pass through the wedge-shaped area and enter the extrusion area to achieve stable feeding.

[0027] See also Figure 1 and Figure 4 , wherein: a dividing rod 61 is fixedly connected to the inside of the guide frame 6, an inclined guide plate 62 is fixedly connected to the right side of the guide frame 6, and the right side of the inclined guide plate 62 extends to the left side gap between the upper pressing belt 10 and the lower filter belt 11.

[0028] In the present invention, the sludge falling through the guide rack 6 is divided and evenly falls on the lower filter belt 11 by the dividing rod 61, and is thinned on the surface of the lower filter belt 11 under the action of the inclined guide plate 62, thereby preventing the sludge from accumulating in the wedge-shaped area.

[0029] See also Figure 1 and Figure 2 , wherein: the top of the frame 1 is fixedly connected with equidistantly arranged clamping rods 12, and the bottom of the clamping rods 12 is fixedly connected with equidistantly arranged dividing blocks 13.

[0030] In the present invention, the sludge initially fed from above is preliminarily dispersed evenly by the dividing block 13 on the clamping rod 12, so that the sludge is better evenly dispersed when it falls to the guide rack 6, thereby improving the uniform dispersion effect of the sludge.

[0031] See also Figure 1 , wherein: a first spray pipe 14 is fixedly installed on the left side of the frame 1, and the nozzle of the first spray pipe 14 is facing the lower filter belt 11; a second spray pipe 15 is fixedly installed on the top of the frame 1, and the nozzle of the second spray pipe 15 is facing the upper pressure belt 10.

[0032] In the present invention, the first spray pipe 14 and the second spray pipe 15 are connected to an external water source to flush the sludge remaining on the upper pressing belt 10 and the lower filtering belt 11 after discharge, thereby ensuring the subsequent filter pressing effect.

[0033] See also Figure 1 , wherein: a discharge guide plate 17 is fixedly connected to the right side of the frame 1, and the discharge guide plate 17 is located on the outside of the lower filter belt 11; a scraper 16 is fixedly connected to the right side of the frame 1, and one side of the scraper 16 is in sliding contact with the outer side of the upper pressure belt 10.

[0034] In the present invention, the sludge dropped after filtering is guided to be discharged through the discharge guide plate 17, and the scraper 16 scrapes the sludge blocks on the surface of the upper pressing belt 10 to avoid residue.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A belt filter press, characterized in that: The invention comprises a frame (1), characterized in that: a row of horizontally arranged first rollers (2) are installed on the frame (1), a second roller (3) and a pressure roller group (4) arranged in a wave pattern are installed inside the frame (1), a guide frame (5) and a material guide frame (6) located below the guide frame (5) are installed inside the frame (1), an upper driving roller (7) is installed on the right side of the frame (1), two lower driving rollers (8) are installed on the left side of the frame (1), a guide roller (9) is installed below the inside of the frame (1), the outer sides of the first roller (2) and the upper driving roller (7) are connected to a closed upper pressure belt (10), the outer sides between the guide roller (9) and the two lower driving rollers (8) are connected to a closed lower filter belt (11), and a section of the upper pressure belt (10) and the lower filter belt (11) are interlaced and matched along the outer waves of the second roller (3) and the pressure roller group (4) arranged in a wave pattern.

2. The belt filter press according to claim 1, characterized in that: The top of the guide frame (5) is fixedly connected to vertical plates (51) arranged at equal distances, and the height of the vertical plates (51) gradually decreases from left to right to form an arc-shaped surface (52).

3. The belt filter press according to claim 1, characterized in that: A dividing rod (61) is fixedly connected to the interior of the guide frame (6), and an inclined guide plate (62) is fixedly connected to the right side of the guide frame (6), and the right side of the inclined guide plate (62) extends to the left side gap between the upper pressing belt (10) and the lower filtering belt (11).

4. The belt filter press according to claim 1, characterized in that: The top of the frame (1) is fixedly connected to clamping rods (12) arranged at equal distances, and the bottom of the clamping rods (12) is fixedly connected to material dividing blocks (13) arranged at equal distances.

5. The belt filter press according to claim 1, characterized in that: A first spray pipe (14) is fixedly installed on the left side of the frame (1), and the nozzle of the first spray pipe (14) is directed toward the lower filter belt (11). A second spray pipe (15) is fixedly installed on the top of the frame (1), and the nozzle of the second spray pipe (15) is directed toward the upper pressure belt (10).

6. The belt filter press according to claim 1, characterized in that: A discharge guide plate (17) is fixedly connected to the right side of the frame (1), and the discharge guide plate (17) is located outside the lower filter belt (11). A scraper (16) is fixedly connected to the right side of the frame (1), and one side of the scraper (16) is in sliding contact with the outer side of the upper pressure belt (10).

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