A double-screw solid-liquid separator

Abstract

The utility model discloses a double helix formula solid -liquid separator, including the sludge outlet box, the right side fixed connection of sludge outlet box has two compression part flanges, two compression part flanges all are penetrated and are rotatably connected with the initiative spiral axle, two initiative spiral axle's outer wall all are fixedly connected with spiral blade, the left side inner wall of sludge outlet box is installed the gear box, two spiral blade left sides respectively with the fixed connection of two output shafts of gear box, the right side of compression part flange is equipped with a plurality of body support, the right side fixed connection of body support in the right side has the sludge inlet box. The utility model discloses adopting double spiral blade conveying structure, and the lamination separation system of fixed ring, movable ring cooperation work, not only can promote the processing capacity to sludge, can also make sludge water content further reduce, significantly enhances the anti - jamming ability to fiber -based material simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of solid-liquid separation devices, and in particular to a double-helix solid-liquid separator. Background Technology

[0002] In the fields of environmental engineering and industrial solid-liquid treatment, the stacked spiral solid-liquid separator is widely used due to its high dewatering efficiency and compact structural design. Chinese invention patent CN105999800B discloses a pendulum-type stacked spiral solid-liquid separator, which achieves solid-liquid separation through the staggered arrangement of fixed and movable rings and the pendulum-like motion of the movable rings, solving problems such as easy deformation and severe wear of the drive rod in traditional equipment. However, this technology uses a single spiral shaft to convey materials, which has limitations such as limited conveying efficiency and susceptibility to clogging when processing high-concentration sludge and fibrous materials, making it difficult to meet the needs of large-scale continuous production and complex material processing.

[0003] The main technical bottlenecks of existing single-spiral stacked disc separation equipment are as follows:

[0004] Limited conveying efficiency and throughput: When the helical blades of a single helical shaft push materials, the axial thrust is singular. Especially for high-concentration sludge with a moisture content of more than 80% or mixed materials containing a large amount of fiber and particulate matter, slippage and stagnation are likely to occur during the conveying process, resulting in low overall processing efficiency and making it unsuitable for industrial-scale application scenarios.

[0005] Insufficient anti-clogging ability: When processing materials containing impurities such as fibers, hair, and plant residues, the single shearing force of the single spiral shaft is difficult to effectively disperse the fiber entanglement, and blockage is easily formed at the gap between the spiral shaft and the stacked blades. This not only affects the separation efficiency, but also requires frequent shutdowns for cleaning, increasing maintenance costs.

[0006] Bottleneck in improving dehydration effect: The squeezing action of the single spiral shaft is concentrated on a single axial path, resulting in insufficient bidirectional shearing force on the material, which makes it difficult to fully remove moisture from the solid particles.

[0007] Therefore, a double-helix solid-liquid separator needs to be designed to solve the above problems. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings of existing technologies by proposing a double-helix solid-liquid separator. This invention employs a double-helix blade conveying structure, which works in conjunction with a stacked plate separation system consisting of fixed and movable rings. This not only increases the sludge processing capacity but also further reduces the sludge moisture content and significantly enhances the anti-clogging ability for fibrous materials.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A double-helix solid-liquid separator includes a sludge discharge box. Two compression flanges are fixedly connected to the right side of the sludge discharge box. A drive helical shaft is rotatably connected through each of the two compression flanges. Helical blades are fixedly connected to the outer walls of the two drive helical shafts. A gearbox is installed on the left inner wall of the sludge discharge box. The left sides of the two helical blades are fixedly connected to the two output shafts of the gearbox, respectively. Multiple body supports are provided on the right side of the compression flanges. A sludge inlet box is fixedly connected to the right side of the body support located on the right side. The two drive helical shafts extend through the sludge inlet box to the outside. A main drive rod is rotatably connected to the upper end of each body support through a connecting bearing. A C-shaped shaft support is fixedly connected to the right side of each connecting bearing. Two sets of movable components are provided on the adjacent sides of every two adjacent body supports.

[0011] Preferably, the movable component includes a connecting piece disposed between two main body supports, a plurality of movable rings are provided between the connecting piece and the main body supports, a fixed ring is provided between every two adjacent movable rings, a plurality of eccentric bearings are fixedly connected to the main drive rod, the plurality of connecting pieces are connected to the corresponding eccentric bearings, a round steel bar is fixedly connected through the plurality of main body supports, the connecting piece is provided with a plurality of through holes, the round steel bar passes through the plurality of through holes, movable rings and fixed rings, and through holes are provided on the connecting piece, the main body supports, movable rings and fixed rings.

[0012] Preferably, each of the multiple body supports is provided with a round hole and an elliptical opening, and a secondary drive rod passes through each of the multiple elliptical openings and round holes. The multiple connecting pieces are fixedly connected to the secondary drive rods, and the multiple movable rings are fixedly connected to the secondary drive rods.

[0013] Preferably, each of the movable rings and the adjacent sides of the fixed rings are fixedly connected with a plurality of gaskets, and the plurality of gaskets are fixedly connected to the round steel.

[0014] Preferably, the main drive rod is connected to the active helical shaft located at the front via a transmission assembly, the transmission assembly including sprockets disposed on the active helical shaft and the main drive rod, and the two sprockets are connected by a chain drive.

[0015] Preferably, a drive unit is installed on the left side of the mud discharge box. The drive unit includes a reducer, and a drive motor is installed on the upper end of the reducer. The output shaft of the drive motor is fixedly connected to the input shaft of the reducer, and the output shaft of the reducer is fixedly connected to the input shaft of the gearbox.

[0016] Compared with existing technologies, the advantages of this device are:

[0017] This device employs a synergistic design of double-helix blades and a stacked structure to create an innovative mechanism of "bidirectional extrusion conveying + dynamic shear separation." The double-helix shaft utilizes a variable pitch and reverse rotation design, increasing the throughput of high-concentration sludge while further reducing the material's moisture content through cross-shearing. Driven by the eccentric mechanism of the main drive rod, the moving ring performs a pendulum-like motion, creating a periodic gap with the fixed ring. This, combined with the close-fitting rotation of the double-helix blades, enhances the dispersion of fibrous materials while preventing component wear. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a double-helix solid-liquid separator proposed in this utility model;

[0019] Figure 2 for Figure 1 Partial 3D view;

[0020] Figure 3 This is a schematic diagram of the main support structure;

[0021] Figure 4 A schematic diagram of the structure connecting the movable ring and the fixed ring;

[0022] Figure 5 This is a schematic diagram of the moving ring structure.

[0023] In the diagram: 1. Mud discharge box, 2. Mud inlet box, 3. Active screw shaft, 4. Spiral blade, 5. Drive unit, 6. Main drive rod, 7. Body support, 8. C-type shaft support, 9. Secondary drive rod, 10. Round steel, 11. Movable ring, 12. Compression flange, 13. Gearbox, 14. Transmission assembly, 15. Through hole, 16. Connecting bearing, 17. Eccentric bearing, 18. Elliptical opening, 19. Round hole, 20. Through hole, 21. Fixed ring, 22. Gasket, 23. Linkage plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figures 1-5A double-helix solid-liquid separator includes a sludge discharge box 1. Two compression flanges 12 are fixedly connected to the right side of the sludge discharge box 1. A drive helical shaft 3 is rotatably connected through each of the two compression flanges 12. Helical blades 4 are fixedly connected to the outer walls of the two drive helical shafts 3. A gearbox 13 is installed on the inner wall of the left side of the sludge discharge box 1. The left sides of the two helical blades 4 are fixedly connected to the two output shafts of the gearbox 13, respectively. Multiple body supports 7 are provided on the right side of the compression flanges 12. A sludge inlet box 2 is fixedly connected to the right side of the body support 7 located on the right side. The two drive helical shafts 3 extend through the sludge inlet box 2 to the outside. The upper end of each body support 7 is rotatably connected to a main drive rod 6 through a connecting bearing 16. A C-shaped shaft support 8 is fixedly connected to the right side of each connecting bearing 16. Two sets of movable components are provided on the adjacent sides of every two adjacent body supports 7.

[0026] The movable component includes a connecting piece 23 disposed between two main body supports 7. The connecting piece 23 is made of Q235 steel plate and is 10mm thick. Multiple movable rings 11 are provided between the connecting piece 23 and the main body support 7. A fixed ring 21 is provided between every two adjacent movable rings 11. Multiple eccentric bearings 17 are fixedly connected to the main drive rod 6. Multiple connecting pieces 23 are connected to the corresponding eccentric bearings 17. A round steel 10 is fixedly connected through multiple main body supports 7. Multiple through holes 20 are provided on the connecting piece 23. The round steel 10 passes through multiple through holes 20, movable rings 11 and fixed rings 21. Through holes 15 are provided on the connecting piece 23, the main body support 7, movable rings 11 and fixed rings 21. Multiple gaskets 22 are fixedly connected to the adjacent sides of each movable ring 11 and fixed ring 21. The gaskets 22 are made of nitrile rubber and are 3mm thick, serving as buffers and seals. Multiple gaskets 22 are fixedly connected to the round steel 10.

[0027] Among them, multiple main body brackets 7 are provided with round holes 19 and elliptical openings 18, and multiple elliptical openings 18 and round holes 19 are provided with auxiliary drive rods 9. Multiple linkage plates 23 are fixedly connected to the auxiliary drive rods 9, and multiple movable rings 11 are fixedly connected to the auxiliary drive rods 9.

[0028] The main drive rod 6 is connected to the active spiral shaft 3 located at the front through a transmission assembly 14. The transmission assembly 14 includes sprockets mounted on the active spiral shaft 3 and the main drive rod 6. The two sprockets are connected by a chain drive. A drive unit 5 is installed on the left side of the mud discharge box 1. The drive unit 5 includes a reducer. A drive motor is installed at the upper end of the reducer. The output shaft of the drive motor is fixedly connected to the input shaft of the reducer. The output shaft of the reducer is fixedly connected to the input shaft of the gearbox 13.

[0029] The functional principle of this invention can be explained through the following operation: The material to be separated is introduced into the mud inlet box 2. The spiral blades 4 on the two active spiral shafts 3 have opposite spiral directions. Under the action of the gearbox 13, the two active spiral shafts 3 rotate in opposite directions and begin to rotate. This reverse rotation design generates 2.3 times the axial thrust of a single spiral, which can efficiently transport materials. The main drive rod 6 is linked to the front active spiral shaft 3 through the transmission assembly 14. Its eccentric bearing 17 drives the lower end of the movable ring 11 to perform a pendulum motion, while the auxiliary drive rod 9 located above restricts the upper end of the movable ring 11 to perform vertical linear motion, forming a compound motion. The gap between the movable ring 11 and the fixed ring 21 changes periodically with the motion. When the movable ring 11 moves to the highest point, its elliptical inner edge and the circular inner edge of the fixed ring 21 form the minimum gap, which strongly squeezes the material to discharge the liquid; when it falls back, the gap increases, which facilitates the entry of subsequent materials. The difference between the maximum screw diameter of the spiral blade 4 and the inner diameter of the fixed ring 21 is ≤1mm. The spiral blade 4 fits and does not contact the movable ring 11. During conveying, it moves in conjunction with the movable ring 11 to form a dual effect of "spiral extrusion + stacked shearing". The anti-slip grooves 22 on the inner edges of the fixed ring 21 and the movable ring 11 further enhance the tearing effect on the fibers and avoid blockage.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double-spiral solid-liquid separator, comprising a sludge discharge box (1), characterized in that: Two compression flanges (12) are fixedly connected to the right side of the mud discharge box (1). A drive screw shaft (3) is rotatably connected through the two compression flanges (12). A screw blade (4) is fixedly connected to the outer wall of the two drive screw shafts (3). A gearbox (13) is installed on the inner wall of the left side of the mud discharge box (1). The left side of the two screw blades (4) is fixedly connected to the two output shafts of the gearbox (13). Multiple body supports (7) are provided on the right side of the compression flange (12). A mud inlet box (2) is fixedly connected to the right side of the body support (7) located on the right side. The two drive screw shafts (3) extend through the mud inlet box (2) to the outside. The upper end of each body support (7) is rotatably connected to a main drive rod (6) through a connecting bearing (16). A C-shaped shaft support (8) is fixedly connected to the right side of each connecting bearing (16). Two sets of movable components are provided on the adjacent sides of every two adjacent body supports (7).

2. The double-spiral solid-liquid separator according to claim 1, characterized in that: The movable component includes a connecting piece (23) disposed between two main body supports (7). Multiple movable rings (11) are provided between the connecting piece (23) and the main body support (7). A fixed ring (21) is provided between every two adjacent movable rings (11). Multiple eccentric bearings (17) are fixedly connected to the main drive rod (6). Multiple connecting pieces (23) are connected to the corresponding eccentric bearings (17). A round steel (10) is fixedly connected through multiple main body supports (7). Multiple through holes (20) are provided on the connecting piece (23). The round steel (10) passes through multiple through holes (20), movable rings (11), and fixed rings (21). Through holes (15) are provided on the connecting piece (23), the main body support (7), the movable rings (11), and the fixed rings (21).

3. The double-spiral solid-liquid separator according to claim 2, characterized in that: Each of the multiple body supports (7) is provided with a round hole (19) and an elliptical opening (18). A secondary drive rod (9) passes through each of the multiple elliptical openings (18) and round holes (19). Multiple connecting pieces (23) are fixedly connected to the secondary drive rod (9). Multiple movable rings (11) are fixedly connected to the secondary drive rod (9).

4. A double-spiral solid-liquid separator according to claim 2, characterized in that: Each of the movable rings (11) and the fixed rings (21) is fixedly connected to a plurality of gaskets (22), and the plurality of gaskets (22) are fixedly connected to the round steel (10).

5. A double-spiral solid-liquid separator according to claim 1, characterized in that: The main drive rod (6) is connected to the active spiral shaft (3) located on the front side via a transmission assembly (14). The transmission assembly (14) includes sprockets mounted on the active spiral shaft (3) and the main drive rod (6), and the two sprockets are connected by a chain drive.

6. A double-spiral solid-liquid separator according to claim 1, characterized in that: A drive unit (5) is installed on the left side of the mud discharge box (1). The drive unit (5) includes a reducer. A drive motor is installed on the upper end of the reducer. The output shaft of the drive motor is fixedly connected to the input shaft of the reducer. The output shaft of the reducer is fixedly connected to the input shaft of the gearbox (13).

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