A self-cleaning dehydrator

Abstract

This application relates to the technical field of solid-liquid separation equipment, and discloses a self-cleaning dewatering machine, including a support frame with two or more spaced support plates along the direction from its inlet to outlet; a filtration unit with two or more sections along the direction from the inlet to the outlet of the support frame, with each filtration unit located between two adjacent support plates; each filtration unit includes two or more sets of movable components; and a drive mechanism supported by the support plates and cooperating with the movable components to drive the sets of movable components in the same filtration unit to perform cyclic circular motion with staggered trajectories; wherein, the outer circumference of the movable ring extends smoothly, and the outer circumference of the movable ring has protruding connecting ears for connecting columns to be connected in series, and the outer circumference of the connecting ears has a guide portion that guides impurities downward away from the movable ring along the circumferential motion direction of the movable ring. This application can improve the filtration permeability of the equipment.

Description

Technical Field

[0001] This application relates to the technical field of solid-liquid separation equipment, and in particular to a self-cleaning dewatering machine. Background Technology

[0002] Solid-liquid separation using dewatering machines is a common process in industrial production, especially in wastewater treatment and mineral processing.

[0003] Typically, dewatering machines construct a through-hole body using a stacked structure of fixed rings and movable rings. The fixed rings are fixedly mounted on the frame of the dewatering machine, while the movable rings move relative to the fixed rings. The dynamic adjustment of the overlapping position between the two maintains the unobstructed flow of the filter gaps. For example, referring to Chinese patent document CN211896615U, a reciprocating stacked plate solid-liquid separator and mixing tank are disclosed. It discloses that a second drive mechanism drives a first closed movable ring plate group to move through a first transmission device, so that the first closed movable ring plate group and the second closed ring plate group move relative to each other. All the movable ring plates are connected as a whole through a first linkage shaft to move synchronously.

[0004] According to the aforementioned related technologies, in actual operation, because all moving rings share a connecting column (i.e., the first linkage shaft in the related technology) to form a whole, the connecting column bears a large load and is prone to bending. Furthermore, impurities escaping from the filter gaps tend to gradually accumulate and harden on the ears of the moving rings used to connect the connecting column and on the outer peripheral wall of the fixed ring. Long-term sludge accumulation weakens the dewatering efficiency of the dewatering machine, necessitating the addition of a spray device to help keep the filter gaps clean. For example, referring to Chinese patent document CN212757518U, an improved solid-liquid separator with a sweeping spray device is disclosed. This discloses a stacked spiral dewatering machine and a cleaning device. The cleaning device is located on the outer periphery of the through-hole body of the stacked spiral dewatering machine, and sprays clean the outer periphery of the dewatering machine through spray pipes. However, adding a spray device not only consumes a large amount of water, increasing the burden on the internal circulation, but also increases the complexity of the equipment structure and operation. Moreover, the spray rinsing is difficult to avoid blind spots and is not easy to effectively remove leaked sludge. Summary of the Invention

[0005] To improve the filtration permeability of the equipment, this application provides a self-cleaning dehydrator.

[0006] This application provides a self-cleaning dehydrator, which adopts the following technical solution:

[0007] A self-cleaning dehydrator, comprising:

[0008] The support frame has two or more support plates arranged at intervals in the direction from its feed end to its discharge end;

[0009] The filter unit has two or more sections along the direction from the feed end to the discharge end of the support frame, and each filter unit section is located between two adjacent support plates; each filter unit section includes two or more sets of movable components; each set of movable components includes a movable ring and a connecting column that connects all the movable rings in the same set in series; the movable ring has a through hole for sludge to pass through, and the movable rings in each set of movable components are arranged alternately with the movable rings in the adjacent set, and there is a filter slit between two adjacent movable rings from different sets that communicates with the through hole, and the through holes of each filter unit section are connected sequentially;

[0010] The first driving mechanism, supported by the support plate and cooperating with the movable components, is used to drive each group of movable components to move relative to the support plate, and each group of movable components in the same filter unit to perform cyclic circular motion with staggered motion trajectories.

[0011] One or more spiral shafts are rotatably connected to the support frame and pass through the through holes of each of the filter units for conveying the material to be filtered toward the discharge end of the support frame; and

[0012] The second drive mechanism is mounted on the support frame and connected to the helical shaft, and is used to drive the helical shaft to rotate.

[0013] The movable ring extends smoothly on its outer periphery, and a connecting lug protrudes from the outer periphery of the movable ring for connecting the connecting post in series. The outer periphery of the connecting lug has a guide portion that guides impurities downward away from the movable ring along the circumferential movement direction of the movable ring.

[0014] By adopting the above technical solution, when the material to be filtered passes through the filtration device, water flows out from the filter gaps to dehydrate the material. The first drive mechanism moves all the movable rings, and the movement trajectories of different groups of movable rings in the same filtration unit are staggered. This allows the movable rings to squeeze and shear the material to be filtered, improving the dehydration effect, and also to disturb the material to keep the filter gaps clear. Simultaneously, during movement, the movable rings, through their smooth outer circumference and the guidance of the guide parts, push impurities away from the outer circumference of the movable rings along the circumferential movement direction, preventing impurities from accumulating on the outer circumference of the movable rings and achieving self-cleaning. This eliminates the need for a spray device in the equipment, improving its maintainability.

[0015] Optionally, the first drive mechanism includes

[0016] The drive rod has two or more, and each drive rod is simultaneously rotatably connected to and passes through all the support plates;

[0017] A drive source, mounted on the support frame, drives one of the drive rods to rotate;

[0018] A gear transmission mechanism connects all the drive rods, enabling all the drive rods to rotate at the same speed and in the same direction; and

[0019] Each linkage group corresponds one-to-one with the movable component. Each linkage group includes two or more linkage plates, which are connected to the corresponding movable component. At the same time, the linkage plates are connected to two or more drive rods through an eccentric mechanism, so that when the drive rod rotates, it drives the linkage plates to perform a circular trajectory motion. The eccentric direction and eccentric distance of the eccentric mechanism relative to the drive rod are the same in the same linkage group. In the same filter unit, the eccentric direction of the eccentric mechanism relative to the drive rod is different in different linkage groups.

[0020] By adopting the above technical solution, the moving parts and the drive rod are connected by an eccentric mechanism, enabling the moving components to perform circular trajectory motion. Moreover, the eccentric directions of different moving parts in the same filter unit are different, realizing the relative motion between the moving components and enhancing the filtration effect.

[0021] Optionally, the feed end of the support frame has a mud inlet for the material to be filtered to enter, and there are two drive rods, which are respectively located on opposite sides of the movable component to avoid the mud inlet. The drive source is installed at the discharge end of the support frame, and the gear transmission mechanism is installed at the feed end of the support frame.

[0022] By adopting the above technical solution, the drive rods are respectively set on opposite sides of the moving components, which balances the driving force and improves the stability of the equipment. Furthermore, installing the gear transmission mechanism at the feeding end of the support frame reduces interference with the components at the feeding end compared to installing it at the discharging end of the support frame, and makes it easier to install and maintain.

[0023] Optionally, two or more drive rods are positioned relative to the upper side of the movable component, and the drive source and the gear transmission mechanism are both mounted on the discharge end of the support frame.

[0024] By adopting the above technical solution, the drive rods are all positioned relative to the upper side of the movable components, thereby reducing the distance between the drive rods and thus reducing the installation size requirements of the gear transmission mechanism. This allows the gear transmission mechanism to be installed at the discharge end of the support frame, making it less prone to water ingress and easier to disassemble and maintain. Simultaneously, the drive rods located on the upper side of the movable components are less likely to come into contact with mud, making it easier to maintain their cleanliness.

[0025] Optionally, the eccentricity of each filter unit corresponding to the eccentric mechanism can be different from the eccentricity of the other filter units corresponding to the eccentric mechanism.

[0026] By adopting the above technical solution, based on the segmentation of the filter unit, the eccentric mechanism in each filter unit can be set with different eccentric distances to adapt to various dehydration scenarios and improve the adaptability of the equipment.

[0027] Optionally, the eccentricity of the filter unit in each section corresponding to the eccentric mechanism decreases along the direction closer to the discharge.

[0028] By adopting the above technical solution, the movement trajectory of the moving components gradually converges towards the discharge direction, which can enhance the dewatering effect in the early stage, appropriately reduce the filtration in the later stage, and reduce the occurrence of mud leakage when the extrusion pressure gradually increases.

[0029] Optionally, the connecting posts in two adjacent filter units are staggered.

[0030] By adopting the above technical solution, the connecting columns of adjacent filter units are staggered to avoid interference between the connecting columns, improve the reliability and stability of the equipment, and enable the moving components in adjacent filter units to be closer together, thereby improving the dewatering efficiency of the equipment and increasing the compactness of the equipment.

[0031] Optionally, adjacent support plates are connected by pillars.

[0032] By adopting the above technical solution, the support plates are connected by pillars, and the ends of the pillars are supplemented with shims to adjust their length, so as to improve the integrity between the support plates, improve the overall stability of the equipment and the accuracy of the filter gaps.

[0033] Optionally, all the said helical shafts rotate in the same direction.

[0034] Optionally, during the process of the spiral shaft conveying the material to be filtered to the discharge end of the support frame, the rotation direction of the spiral shaft is in the same direction as the circumferential motion direction of the movable component.

[0035] By adopting the above technical solution, and by having the rotation direction of the spiral shaft be in the same direction as the circumferential motion of the movable component, the distance between the inner circumferential wall of the movable ring and the spiral shaft can be continuously changed so that the material to be filtered is squeezed, while the movable ring can assist in pushing the material to be filtered toward the discharge end of the support frame.

[0036] In summary, this application includes at least one of the following beneficial effects:

[0037] 1. The filter unit is divided into sections, with different connecting posts used to connect the movable ring in different sections. This reduces the burden on the connecting posts caused by the compression of the filter unit by the screw shaft during operation, resulting in smoother operation and improved equipment stability and service life. Simultaneously, the smooth extension of the outer circumference of the movable ring and the guiding mechanism automatically guide impurities downwards along the circumferential movement of the movable ring, preventing impurities from accumulating and clogging the outer wall of the movable ring, maintaining the filter gaps' continuous unobstructed flow, achieving self-cleaning of the movable ring, and improving the permeability of the filter gaps.

[0038] 2. By dividing the filter unit into sections, the eccentricity of the eccentric mechanism in each filter unit can be adjusted. During the filtration process, different eccentricities can change the position and function of the spiral shaft in each section, thereby adjusting the distribution and flow of the material to be filtered in the filter unit, making the filtration process smoother. At the same time, it allows the sludge to be effectively discharged at the appropriate position and time, reducing the impact of sludge leakage on the filtration effect, achieving a good balance between filtration and sludge leakage, and improving the working efficiency and stability of the entire filtration device and dewatering machine.

[0039] 3. The relative movement between the spiral shaft and the movable ring allows for a stronger compression of the material to be filtered. This increased compression effectively promotes faster liquid flow through the filter gaps, thereby improving filtration efficiency. Simultaneously, the relative movement between the spiral shaft and the movable ring also provides a degree of self-cleaning, preventing clogging of the filter gaps and further ensuring the continuity and stability of filtration. Attached Figure Description

[0040] Figure 1 This is a front view of Embodiment 1 of this application;

[0041] Figure 2 This is a top view of the cooperation between the helical shaft and the second drive mechanism in Embodiment 1 of this application;

[0042] Figure 3 This is a three-dimensional structural diagram of Embodiment 1 of this application after the second drive mechanism is hidden;

[0043] Figure 4 This is a schematic diagram of the exploded structure of the filter unit and the first drive mechanism in Embodiment 1 of this application;

[0044] Figure 5 This is a schematic diagram of the exploded structure of a filter unit in Embodiment 1 of this application;

[0045] Figure 6 This is a schematic diagram of the structure of movable ring a and movable ring b in Embodiment 1 of this application;

[0046] Figure 7 This is a schematic diagram of the structure of movable ring c and movable ring d in Embodiment 1 of this application;

[0047] Figure 8 This is a schematic diagram of the gear transmission mechanism in Embodiment 1 of this application;

[0048] Figure 9 This is a schematic diagram of the gear set in Embodiment 1 of this application;

[0049] Figure 10 This is a front view of Embodiment 2 of this application;

[0050] Figure 11 This is a three-dimensional structural schematic diagram of Embodiment 2 of this application;

[0051] Figure 12 This is a schematic diagram of the gear transmission mechanism in Embodiment 2 of this application;

[0052] Explanation of reference numerals in the attached drawings: 1. Support frame; 101. Support plate; 102. Mud inlet box; 103. Mud outlet box; 104. Column; 2. Assembly space; 3. Movable component; 31. Movable ring; 32. Connecting column; 4. Through hole; 5. First drive mechanism; 51. Drive rod; 52. Drive source; 53. Gear transmission mechanism; 54. Linkage group; 541. Linkage piece; 6. Connecting ear; 7. Guide part; 8. Eccentric mechanism; 10. Spiral shaft; 11. Second drive mechanism; 111. Shaft drive motor; 112. Gear set; 12. Through hole; 13. Relief hole; 14. First ring drive gearbox; 15. Second ring drive gearbox; 16. Shaft drive motor seat; 17. Shaft drive gearbox. Detailed Implementation

[0053] The present application will be further described in detail below with reference to the accompanying drawings.

[0054] Example 1:

[0055] This application discloses a self-cleaning dewatering machine, wherein the material to be filtered in this embodiment is sludge. (Refer to...) Figure 1 and Figure 2 The self-cleaning dewatering machine includes a support frame 1, a filter unit, a first drive mechanism 5, a screw shaft 10, and a second drive mechanism 11. The first drive mechanism 5 is mounted on the support frame 1 and supports the filter unit. The filter unit is used to dewater sludge by feeding filter media. The screw shaft 10 is driven by the second drive mechanism 11 and mounted on the support frame 1, and is used to feed sludge from the feed end of the support frame 1 through the filter unit to the discharge end of the support frame 1.

[0056] Among them, the support frame 1 includes a support plate 101, a mud inlet box 102, a mud outlet box 103, and a support column 104.

[0057] The sludge inlet box 102 is located at the feed end of the support frame 1 and has a sludge inlet for sludge to enter. The sludge outlet box 103 is located at the discharge end of the support frame 1 and has a sludge outlet for the filtered material to be discharged.

[0058] Reference Figure 3 and Figure 4 The support plate 101 is plate-shaped, and two or more support plates 101 are arranged at intervals along the distribution direction of the mud inlet box 102 and the mud outlet box 103, with the arrangement direction of the support plates 101 perpendicular to the plate surface. Two support plates 101 that are far apart from each other are fixedly connected to the mud inlet box 102 and the mud outlet box 103 respectively by flanges. The remaining support plates 101 are connected to their adjacent support plates 101 by pillars 104, so that all support plates 101 are connected into a whole. Specifically, there are four pillars 104 that connect adjacent support plates 101 along the direction perpendicular to the plate surface of the support plate 101. The four pillars 104 are respectively connected to the four corners of the support plate 101. The far ends of the pillars 104 slide through the adjacent support plates 101, are fitted with gaskets, and are locked with nuts to position the adjacent support plates 101.

[0059] It should be noted that in this embodiment, an assembly space 2 for placing the filter unit is formed between any two adjacent support plates 101. The pillars 104 corresponding to the two adjacent assembly spaces 2 are offset on the support plates 101 to reduce the required thickness of the support plates 101 between the two filter units, maintain connection strength while improving the convenience of installing the support plates 101, and reduce production costs. In other embodiments, at least one set of two adjacent support plates 101 may form an assembly space 2, and the remaining two adjacent support plates 101 may be connected by flanges to form a transition section for sludge to pass through.

[0060] In this embodiment, three support plates 101 are arranged along the distribution direction of the mud inlet box 102 and the mud outlet box 103 to form two assembly spaces 2. In other embodiments, there may be two, four, or five support plates 101.

[0061] For each filter unit, there is a one-to-one correspondence between the filter units and the assembly space 2, with two or more sections. Each filter unit is located in its corresponding assembly space 2. In this embodiment, the number of filter units is two sections corresponding to the assembly space 2.

[0062] Reference Figure 3 and Figure 5Each filter unit includes two or more sets of movable components 3. In this embodiment, the movable components 3 are preferably two sets. Each set of movable components 3 includes a movable ring 31 and a connecting post 32. Multiple movable rings 31 are evenly spaced along the distribution direction of the support plate 101. The connecting post 32 connects all the movable rings 31 in the same set in series, so that all the movable rings 31 in the same set form a whole.

[0063] Specifically, the movable ring 31 has a connecting ear 6 protruding outward from its outer periphery. The connecting ear 6 has a through hole 12 for the connecting post 32 to pass through. The connecting post 32 passes through the through hole 12 along the distribution direction of the movable ring 31, simultaneously penetrating the movable ring 31 in the same movable component 3. The two ends of the connecting post 32 that are far apart from each other pass through two adjacent support plates 101. There is one or more connecting ears 6 on the movable ring 31. In this embodiment, each movable ring 31 has two connecting ears 6, therefore, each group of movable components 3 has two connecting posts 32 corresponding to the number of connecting ears 6.

[0064] Furthermore, to prevent interference between the connecting posts 32 on different sets of movable rings 31, the connecting ears 6 of the movable rings 31 of different movable components 3 in the same filter unit are misaligned, so that the connecting posts 32 in different movable components 3 are misaligned. Moreover, to prevent interference between the connecting posts 32 on the support plate 101 between adjacent filter units, the connecting posts 32 in different filter units are also misaligned.

[0065] The movable rings 31 in two or more sets of movable components 3 are arranged alternately with each other. Specifically, the movable rings 31 in each set of movable components 3 are arranged alternately with the movable rings 31 in the adjacent movable components 3 along the distribution direction of the support frame, and the two movable rings 31 that are far apart from each other in the same filter unit respectively abut or approach the two support plates 101 corresponding to the filter unit.

[0066] Reference Figure 3 and Figure 5 The inner periphery of the active ring 31 forms a through hole 4. The support plate 101 has a first connecting hole that is opposite to and connected to the through hole 4. The through hole 4 of two adjacent filter units can be connected through the first connecting hole so that each filter unit is connected sequentially along the distribution direction of the support plate 101. Both the through hole 4 and the first connecting hole are used for the spiral shaft 10 to pass through to drive the sludge through.

[0067] A filter gap is formed between two adjacent and different movable rings 31 of the movable components 3. The filter gap communicates with the through hole 4, and the water flows out through the filter gap when the sludge passes through the through hole 4. The filter gap can be maintained by fixing the movable rings 31 to the connecting column 32, or by fitting a gasket (not shown in the figure) on the connecting column 32. The gasket abuts between two adjacent movable rings 31 in one set of movable components 3, and the thickness of the gasket is greater than the thickness of the different sets of movable rings 31 between the two movable rings 31, so as to form a filter gap.

[0068] Reference Figure 4 and Figure 5 Each set of movable components 3 cooperates with the first drive mechanism 5. The first drive mechanism 5 drives each set of movable components 3 to perform cyclic circular motion along the direction parallel to the surface of the support plate 101. The circular motion trajectories of different sets of movable components 3 in the same filtration unit are staggered, so that the two adjacent and different sets of movable rings 31 continuously move alternately, thereby keeping the filter gaps unobstructed. Moreover, the movable rings 31 can continuously disturb and shear the sludge, improving the water filtration efficiency. Adaptably, the size of the hole on the support plate 101 for the connecting column 32 to pass through is larger than the size of the connecting column 32, so as to allow the connecting column 32 to move.

[0069] Furthermore, the outer periphery of the movable ring 31 is a smooth, extended elliptical shape, and the connecting ear 6 protrudes from the outer periphery of the movable ring 31 and has a guide portion 7. The guide portion 7 can guide impurities on the outer periphery of the movable ring 31 downward along the circumferential movement direction of the movable ring 31 during the movement of the movable ring 31, so as to achieve self-cleaning of the movable ring 31 and make it less prone to accumulating dirt on the outer periphery of the movable ring 31.

[0070] Reference Figure 4 and Figure 5 In this embodiment, the active components 3 in both filter units have two sets. In other embodiments, the active components 3 in both filter units may have three or four sets, or one filter unit may have two sets of active components 3 and the other filter unit may have three sets of active components 3.

[0071] Specifically, the two filter units are the first filter unit and the second filter unit. In the first filter unit, the two sets of moving components 3 have moving rings 31, namely moving ring a and moving ring b. In the second filter unit, the two sets of moving components 3 have moving rings 31, namely moving ring c and moving ring d.

[0072] Reference Figure 6 and Figure 7The directions shown in the diagram are clockwise for the circular motion of movable rings a, b, c, and d. The two connecting ears 6 on movable ring a are located on opposite sides of the ring, near the upper left and lower right corners respectively. The guide portion 7 is the upper side of the connecting ears 6, gradually sloping downwards away from the ring a. The two connecting ears 6 on movable ring b are located on opposite sides of the ring, near the upper left and lower right corners respectively. They also connect to the curved surfaces on opposite sides of the ring b. The guide portion 7 is the right side of the connecting ears 6, extending downwards. The two connecting ears 6 on movable ring c are located on opposite sides of the ring, near the lower left and upper right corners respectively. The guide portion 7 is the upper side of the connecting ears 6, gradually sloping downwards away from the ring c. The two connecting ears 6 on the movable ring d are located at the upper left and lower right corners of the movable ring d, respectively. The guide part 7 is the right side of the connecting ear 6, and it tends to gradually tilt to the right in the downward direction.

[0073] Reference Figure 4 The first drive mechanism 5 includes a drive rod 51, a drive source 52, a gear transmission mechanism 53, and a linkage group 54.

[0074] Reference Figure 3 and Figure 4 The drive rod 51 is round and there are two or more of them. All drive rods 51 are parallel to each other and pass through all support plates 101 along the distribution direction of the support plates 101. The drive rods 51 are rotatably connected to the support plates 101 through bearings. In this embodiment, the number of drive rods 51 is preferably two, but in other embodiments, it can be three, four, etc.

[0075] The drive source 52 is a motor. The base of the drive source 52 is installed on the side of the mud discharge box 103 away from the mud inlet box 102. The output end of the drive source 52 is coaxially connected to one of the drive rods 51 to drive the drive rod 51 to rotate. The gear transmission mechanism 53 is installed to simultaneously cooperate with all the drive rods 51, so that all the drive rods 51 rotate at the same speed and in the same direction.

[0076] Reference Figure 4 and Figure 5 Each linkage group 54 corresponds one-to-one with a movable component 3. Each linkage group 54 includes two or more linkage pieces 541. Each linkage piece 541 is sleeved on two connecting posts 32 in the corresponding movable component 3. The linkage piece 541 abuts against two adjacent movable pieces of the corresponding movable component 3, and has a second connecting hole that is opposite to and communicates with the through hole 4. Therefore, the movement of the linkage piece 541 can drive the corresponding movable component 3 to move together. In this embodiment, each linkage group 54 contains two linkage pieces 541.

[0077] Meanwhile, the linkage plate 541 is connected to two drive rods 51 via an eccentric mechanism 8. The eccentric direction and eccentricity of the eccentric mechanism 8 relative to the drive rods 51 in the same linkage group 54 are consistent, so that when the two drive rods 51 rotate synchronously, they drive the linkage plate 541 to perform a circular motion, which in turn drives the movable component 3 to perform a circular motion. Furthermore, the linkage plate 541 is provided with a clearance hole 13. A connecting post 32 of the same filter unit but different movable components 3 passes through the linkage plate 541 via the clearance hole 13. The clearance hole 13 is larger than the connecting post 32 to allow space for the movement of the connecting post 32.

[0078] Reference Figure 3 and Figure 4 It should be noted that the eccentric mechanisms 8, corresponding to the same filter unit but located in different linkage groups 54, have different eccentric directions relative to the drive rod 51, thereby causing the circumferential trajectories of the two sets of moving components 3 in the same filter unit to be misaligned. In this embodiment, the eccentric mechanism 8 is an eccentric bearing, which is fixedly and eccentrically sleeved on the drive rod 51, and the linkage piece 541 is rotatably sleeved on the eccentric bearing.

[0079] Furthermore, the eccentricity of each filter unit corresponding to the eccentric mechanism 8 can be different from the eccentricity of the eccentric mechanisms 8 of the other filter units. In this embodiment, the eccentricity of each filter unit corresponding to the eccentric mechanism 8 decreases sequentially towards the sludge discharge box 103, so that the disturbance amplitude of the moving ring 31 in the filter unit near the sludge inlet box 102 is greater than the disturbance amplitude of the moving ring 31 in the filter unit near the sludge discharge box 103, thereby making the filter gaps in the filter unit near the sludge inlet box 102 have better permeability, which helps to improve the water filtration efficiency. In other embodiments, the change in eccentricity can also be small first and then large, or large first and then small and then large.

[0080] Reference Figure 3 and Figure 8Furthermore, in this embodiment, the two drive rods 51 are positioned diagonally above and below the movable component 3 to avoid the mud inlet of the mud inlet box 102. A first ring drive gearbox 14 is installed on the side of the mud inlet box 102 away from the mud outlet box 103. The ends of both drive rods 51 extend into the first ring drive gearbox 14. The gear transmission mechanism 53 includes a driving gear fixedly and coaxially sleeved on the drive rod 51 connected to the drive source 52, a driven gear fixedly and coaxially sleeved on the other drive rod 51, and three transmission gears sequentially meshing between the driven gear and the driving gear. The transmission gears are rotatably connected to the first ring drive gearbox 14. Due to the vertical distribution of the drive rods 51, the distance between the two drive rods 51 is relatively large, and the number of gears in the gear transmission mechanism 53 is relatively large. Installing the gear transmission mechanism 53 at the mud inlet box 102 can avoid components near the mud outlet box 103, improving the convenience of disassembly and assembly.

[0081] Reference Figure 1 and Figure 3 Regarding the spiral shaft 10, there may be one or more spiral shafts 10. When there are multiple spiral shafts 10, the multiple spiral shafts 10 are arranged parallel to each other in the horizontal or vertical direction, and the two ends of the spiral shafts 10 that are far apart from each other are rotatably connected to the mud discharge box 103 and the mud inlet box 102, respectively. The spiral shafts 10 pass through all the movable rings 31 simultaneously through the through holes 4. In this embodiment, there are two spiral shafts 10, and the two spiral shafts 10 are arranged in the horizontal direction.

[0082] Reference Figure 1 and Figure 9 The second drive mechanism 11 includes a shaft drive motor 111 and a gear set 112. A shaft drive motor mount 16 is detachably mounted on the side of the mud discharge box 103 away from the mud inlet box 102 via bolts. The shaft drive motor 111 is mounted on the shaft drive motor mount 16, and one end of a spiral shaft 10 passes through the mud discharge box 103 and is connected to the output end of the shaft drive motor 111. A shaft drive gearbox 17 is also mounted on the shaft drive motor mount 16. The gear set 112 is located in the shaft drive gearbox 17 and meshes with the two spiral shafts 10 to drive the two spiral shafts 10 to rotate synchronously.

[0083] In this embodiment, the gear set 112 includes a main gear coaxially fixedly sleeved on one of the spiral shafts 10, a driven gear coaxially fixedly sleeved on the other spiral shaft 10, and an intermediate gear that meshes with both the main gear and the driven gear, so that the two spiral shafts 10 rotate in the same direction. In other embodiments, the gear set 112 can also be configured to rotate the two spiral shafts 10 in opposite directions.

[0084] When the dewatering machine is in use, the sludge entering the sludge inlet box 102 is guided by the rotating screw shaft 10 to the through hole 4 and moves towards the sludge outlet box 103. During the process of moving towards the sludge outlet box 103, the sludge is filtered and dewatered by the filtration device.

[0085] Furthermore, in this embodiment, the direction of the circular motion of the movable component 3 is the same as the rotation direction of the spiral shaft 10. When the blades on the spiral shaft 10 are conveying sludge along the direction of the sludge discharge box 103, the movable ring 31 can, while jointly squeezing the sludge with the blades, provide a boosting force to the sludge moving in the direction of the sludge discharge box 103, thereby improving the sludge dewatering and conveying efficiency.

[0086] The implementation principle of a self-cleaning dewatering machine according to an embodiment of this application is as follows: The flocculated sludge flocs fall from the inlet of the sludge inlet box 102 onto the spiral shaft 10, and are carried by the spiral shaft 10 into the through hole 4 and move towards the sludge outlet box 103. During the movement of the sludge flocs towards the sludge outlet box 103, the drive source 52 drives the drive rod 51 to rotate. The drive rod 51 drives the movable plate to perform a cyclic circular motion through the eccentric mechanism 8. The motion trajectories of different groups of movable plates in the same filter unit intersect, causing the movable plates to disturb and shear the sludge flocs. The water in the sludge flocs flows out from the filter gaps. Some of the sludge that leaks to the outside of the movable ring 31 will naturally fall off along the outer circumference of the movable ring 31 and the guide part 7 of the connecting ear 6 under the guidance of the circular motion of the movable ring 31, making it less likely for sludge to accumulate.

[0087] After the sludge flocs are treated, the drive source 52 drives the drive rod 51 to reverse for a period of time to change the direction of sludge accumulation on the movable ring 31, thereby further improving the self-cleaning effect of the movable ring 31.

[0088] Example 2:

[0089] The difference between this embodiment and Embodiment 1 lies in the different installation positions of the drive rod 51 and the different gear transmission mechanism 53.

[0090] Reference Figure 10 and Figure 11 Specifically, there are two drive rods 51, each opposite to one side of the movable component 3. In this embodiment, both drive rods 51 are located above the movable component 3 and opposite its upper side. In other embodiments, both drive rods 51 may be located below the movable component 3.

[0091] Reference Figure 10 and Figure 12Furthermore, in this embodiment, the first ring drive gearbox 14 is not present. Instead, a second ring drive gearbox 15 is installed on the side of the support plate 101 near the mud discharge box 103 facing the mud discharge box 103. One drive rod 51 passes through the second ring drive gearbox 15 and is connected to the output end of the drive source 52. The end of the other drive rod 51 extends into the second ring drive gearbox 15. The gear transmission mechanism 53 includes a driving gear fixedly and coaxially sleeved on the drive rod 51 connected to the drive source 52, a driven gear fixedly and coaxially sleeved on the other drive rod 51, and a transmission gear that meshes sequentially between the driven gear and the driving gear. The transmission gear is rotatably connected to the second ring drive gearbox 15. The driving gear, transmission gear, and driven gear are arranged in a horizontal direction.

[0092] Because the drive rods 51 are distributed on the same side, the distance between the two drive rods 51 is small. This results in fewer gears in the gear transmission mechanism 53, which occupy less space. Installing the gear transmission mechanism 53 near the sludge discharge box 103 minimizes interference with surrounding components. Furthermore, the gear transmission mechanism 53 is less prone to water ingress into the sludge discharge box 103, facilitating disassembly and maintenance. Moreover, with all drive rods 51 located above the movable component 3, the water outlet space below the movable component 3 is expanded, and the drive rods 51 are less affected by falling impurities and sludge during operation.

[0093] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-cleaning dehydrator, characterized in that, include: The support frame has two or more support plates arranged at intervals in the direction from its feed end to its discharge end; The filter unit has two or more sections along the direction from the feed end to the discharge end of the support frame, and each filter unit section is located between two adjacent support plates; each filter unit section includes two or more sets of movable components; each set of movable components includes a movable ring and a connecting column that connects all the movable rings in the same set in series; the movable ring has a through hole for sludge to pass through, and the movable rings in each set of movable components are arranged alternately with the movable rings in the adjacent set, and there is a filter slit between two adjacent movable rings from different sets that communicates with the through hole, and the through holes of each filter unit section are connected sequentially; The first driving mechanism, supported by the support plate and cooperating with the movable components, is used to drive each group of movable components to move relative to the support plate, and each group of movable components in the same filter unit to perform cyclic circular motion with staggered motion trajectories. The spiral shaft is rotatably connected to the support frame and passes through each of the filter units through the through holes, for conveying the material to be filtered toward the discharge end of the support frame. as well as The second drive mechanism is mounted on the support frame and connected to the helical shaft, and is used to drive the helical shaft to rotate. The movable ring extends smoothly on its outer periphery, and a connecting lug protrudes from the outer periphery of the movable ring for connecting the connecting post in series. The outer periphery of the connecting lug has a guide portion that guides impurities downward away from the movable ring along the circumferential movement direction of the movable ring.

2. The self-cleaning dehydrator according to claim 1, characterized in that: The first driving mechanism includes The drive rod has two or more, and each drive rod is simultaneously rotatably connected to and passes through all the support plates; A drive source, mounted on the support frame, drives one of the drive rods to rotate; A gear transmission mechanism connects all the drive rods, enabling all the drive rods to rotate at the same speed and in the same direction; and Each linkage group corresponds one-to-one with the movable component. Each linkage group includes two or more linkage plates, which are connected to the corresponding movable component. At the same time, the linkage plates are connected to two or more drive rods through an eccentric mechanism, so that when the drive rod rotates, it drives the linkage plates to perform a circular trajectory motion. The eccentric direction and eccentric distance of the eccentric mechanism relative to the drive rod are the same in the same linkage group. In the same filter unit, the eccentric direction of the eccentric mechanism relative to the drive rod is different in different linkage groups.

3. A self-cleaning dehydrator according to claim 2, characterized in that: The feed end of the support frame has a mud inlet for the material to be filtered to enter. There are two drive rods, which are respectively positioned on opposite sides of the movable component to avoid the mud inlet. The drive source is installed at the discharge end of the support frame, and the gear transmission mechanism is installed at the feed end of the support frame.

4. A self-cleaning dehydrator according to claim 2, characterized in that: Two or more drive rods are located on the upper side of the movable component, and the drive source and the gear transmission mechanism are both installed at the discharge end of the support frame.

5. A self-cleaning dehydrator according to claim 2, characterized in that: The eccentricity of each filter unit corresponding to the eccentric mechanism can be different from the eccentricity of the other filter units corresponding to the eccentric mechanism.

6. A self-cleaning dehydrator according to claim 5, characterized in that: The eccentricity of the filter unit in each section corresponding to the eccentric mechanism decreases along the direction closer to the discharge.

7. A self-cleaning dehydrator according to claim 1, characterized in that: The connecting posts in two adjacent filter units are misaligned.

8. A self-cleaning dehydrator according to claim 1, characterized in that: The adjacent support plates are connected by pillars.

9. A self-cleaning dehydrator according to claim 1, characterized in that: All of the aforementioned helical shafts rotate in the same direction.

10. A self-cleaning dehydrator according to claim 9, characterized in that: During the process of the spiral shaft conveying the material to be filtered to the discharge end of the support frame, the rotation direction of the spiral shaft is in the same direction as the circumferential motion direction of the movable component.

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