A sludge dewatering device

Abstract

The present invention relates to the technical field of sludge dewatering, and specifically, to a sludge dewatering device, which includes a sewage filter press device body, first guide rails are symmetrically arranged on both sides of the sewage filter press device body, and a plurality of filter plates are slidably arranged on the first guide rails. Second guide rails are also symmetrically arranged on both sides of the sewage filter press device body, and a third guide rail is arranged at the middle position of the top of the sewage filter press device body. A sliding device that can slide independently is provided on the second guide rail, and a driving component is slidably arranged on the third guide rail. A shaking frame is provided on the driving component, and a clamping component for clamping the filter plate is provided on the sliding device. The two ends of the shaking frame are respectively connected to the clamping components on both sides of the sewage filter press device body, and the driving component is used to drive the shaking frame to swing back and forth, and the reciprocating swing of the shaking frame is used to drive the clamping component to swing back and forth.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge dewatering, in particular to a sludge dewatering device. Background Art

[0002] The sewage sludge dragging device is a device used in the sewage treatment process, mainly used to separate and remove sludge from sewage. The sludge dewatering device can effectively reduce the volume of sludge, reduce transportation costs and storage space requirements, and significantly increase the solid content of sludge through dewatering treatment, laying a solid foundation for subsequent resource utilization or harmless disposal.

[0003] A sewage filter press is a pressure-driven solid-liquid separation device widely used in sludge, chemical, environmental protection and other fields. After pre-treatment, sewage is fed into the filter press's feed system, where it is evenly injected onto the filter media. The filter media usually uses multi-layer filter cloth or filter plates with a certain porosity and filtration accuracy. The filter press applies a certain amount of pressure to force the liquid in the sewage through the filter media, while solid particles gradually accumulate on the filter media to form a filter cake.

[0004] In actual use, after the filter press treats sewage, the filter cake on the filter plate often needs to be handled manually or falls off freely by its own gravity, which is inefficient. For the method of using a mechanical scraper, since the filter cloth is relatively fragile, the mechanical scraper method is likely to reduce the service life of the filter cloth, and it is also easy to leave filter cake residue on the filter cloth; and even if a mechanical method is used to make the filter plate swing, the mechanical method often swings regularly. In the initial stage, the filter cake will be subjected to the force of swinging in the opposite direction due to inertia. However, the filter cake residue stuck to the filter plate or the filter cake with high viscosity will maintain the same swing frequency as the filter plate for a certain period of time. Therefore, such regular swinging has limited ability to cause the filter cake or filter cake residue on the filter plate to fall off.

[0005] Based on this, the present invention discloses a sludge dewatering device. Summary of the Invention

[0006] In order to solve the problems raised in the background technology, the present invention provides a sludge dewatering device, which includes a sewage filter press device body, wherein first guide rails are symmetrically arranged on both sides of the sewage filter press device body, and a plurality of filter plates are slidably arranged on the first guide rails;

[0007] Preferably, second guide rails are symmetrically provided on both sides of the sewage filter press body, a third guide rail is provided at the middle position of the top of the sewage filter press body, the second guide rail is provided with a sliding device that can slide independently, a driving assembly is slidably provided on the third guide rail, a shaking frame is provided on the driving assembly, a clamping assembly for clamping the filter plate is provided on the sliding device, and both ends of the shaking frame are respectively connected to the clamping assemblies on both sides of the sewage filter press body;

[0008] The driving assembly is used to drive the shaking frame to swing back and forth, and the reciprocating swing of the shaking frame is used to drive the clamping assembly to swing back and forth.

[0009] As a further improvement of the present technical solution, the clamping assembly includes a first installation box, a receiving groove is provided on the top of the first installation box, and fixed rods are symmetrically fixedly connected at the front and rear ends along the sliding direction of the sliding device in the first installation box, and a clamping plate is rotatably connected to the fixed rod. A torsion spring is also provided on the fixed rod, one end of the torsion spring is fixedly connected to the clamping plate, and the other end is fixedly connected to the fixed rod. The torsion spring always has a tendency to cause the clamping plate to rotate perpendicular to the horizontal plane, and the front and rear ends of the receiving groove block the two clamping plates to form a triangular structure, and a clamping opening is formed between the two clamping plates to match the hanging rods on both sides of the filter plate.

[0010] As a further improvement of this technical solution, a movable plate is fixedly connected to the sliding device, a sliding groove is provided on the top of the movable plate, a support rod is slidingly connected in the sliding groove, and the first installation box is slidingly connected in the sliding groove through the support rod.

[0011] As a further improvement of the present technical solution, mounting plates are fixedly connected to the front and rear ends of the movable plate along the sliding direction, and return springs are symmetrically arranged between the front and rear ends of the first mounting box and the mounting plate, so that the first mounting box always tends to be located in the middle position of the mounting plate. One end of the return spring is fixedly connected to the mounting plate, and the other end is fixedly connected to the first mounting box.

[0012] Preferably, the two sections of the shaking frame located on the third guide rail are both U-shaped structures, and the middle position of the shaking frame is rotatably connected to the driving assembly.

[0013] As a further improvement of the present technical solution, a movable groove is provided through the side of the movable plate, a guide groove is provided on one end of the shaking frame section, the support rod is slidably connected in the guide groove, and one end of the shaking frame section is movably connected in the movable groove through the support rod.

[0014] Preferably, the driving assembly includes a second mounting box, the second mounting box is slidably connected to the third guide rail, a driving motor is fixedly connected inside the second mounting box, the output end of the driving motor is fixedly connected to a driving gear, the top of the second mounting box is rotatably connected to a rotating rod, one end of the rotating rod is fixedly connected to the middle position of the shaking frame, and the other end of the rotating rod is fixedly connected to a driven gear, and the driven gear is meshed with the driving gear.

[0015] As a further improvement of the present technical solution, the driving gear is partially toothed and partially smooth, and the angle at which the toothed portion of the driving gear drives the driven gear to rotate is adapted to the angle at which the shaking frame needs to rotate when one end of a section of the shaking frame moves from the middle position in the movable groove to one side of the movable groove.

[0016] Preferably, the third guide rail is located above the filter plate, and the sliding devices on the two second guide rails move synchronously.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In this sludge dewatering device, with the help of the return spring, the first mounting box can swing back and forth irregularly in the chute after clamping the filter plate. This irregular movement breaks the problem of synchronous frequency between the filter cake and the filter plate caused by traditional mechanical swing, which facilitates to enhance the vibration force of the filter plate, thereby achieving more effective filter cake shedding.

[0019] 2. In this sludge dewatering device, through the linkage design of the driving assembly and the shaking frame, the intermittent engagement of the driving gear and the driven gear enables the shaking frame to drive the first installation boxes on both sides to swing in opposite directions. Combined with the action of the reset spring, not only the swing frequency and amplitude of the first installation box are increased, but also the irregular driving force further promotes the shedding of the filter cake.

[0020] 3. In this sludge dewatering device, the toothed design of the driving gear ensures the periodic reciprocating swing of the shaking frame, while allowing the first mounting box to swing freely under the action of its reset spring, which not only ensures the stable operation of the system, but also achieves effective removal of the filter cake on the filter plate, avoiding the problem of filter cloth damage that may be caused by traditional mechanical scraping methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 Schematic diagram of the structure of the third guide rail of the present invention;

[0023] Figure 3It is a structural schematic diagram of the movable plate of the present invention;

[0024] Figure 4 A cross-sectional view of the structure of the movable panel of the present invention;

[0025] Figure 5 It is a partial structural schematic diagram of the shaking frame of the present invention;

[0026] Figure 6 for Figure 5 A magnified view of the structure at point A.

[0027] The meaning of each number in the figure is:

[0028] 1. Sewage filter press body; 2. First guide rail; 3. Second guide rail; 4. Third guide rail; 5. Filter plate; 6. Sliding device; 8. Movable plate; 9. Clamping assembly; 10. Driving assembly; 11. Shaking frame; 12. Guide groove; 13. Slide groove; 14. Movable groove; 15. Mounting plate; 16. Return spring; 17. Support rod

[0029] 91. First mounting box; 92. Accommodating slot; 93. Fixing rod; 94. Clamping plate; 95. Torsion spring;

[0030] 101. Second installation box; 102. Rotating rod; 103. Driven gear; 104. Driving gear; 105. Driving motor. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The filter cake on the filter plate 5 of the existing sludge dewatering device is often removed by manual labor or gravity. Even if a mechanical scraper is used, it is easy to damage the filter cloth, and filter cake residues are also easy to remain on the filter cloth. Even if a mechanical method is used to swing the filter plate 5, due to the regular swinging, the filter cake or filter cake residue on the filter plate 5 keeps the same swing frequency as the filter plate 5, so the shedding ability is limited.

[0033] For this purpose, the present invention provides a sludge dewatering device, see Figure 1 As shown, it includes a sewage filter press device body 1, and first guide rails 2 are symmetrically arranged on both sides of the sewage filter press device body 1, and a plurality of filter plates 5 are slidably arranged on the first guide rails 2.

[0034] For details, see Figure 1-Figure 2As shown, second guide rails 3 are symmetrically arranged on both sides of the sewage filter press device body 1, and a third guide rail 4 is arranged in the middle position of the top of the sewage filter press device body 1. The third guide rail 4 is located above the filter plate 5. A sliding device 6 that can slide independently is provided on the second guide rail 3, and the sliding devices 6 on the two second guide rails 3 move synchronously. A driving assembly 10 is slidingly arranged on the third guide rail 4.

[0035] Among them, see Figure 2-Figure 4 As shown, the sliding device 6 is provided with a clamping assembly 9 for clamping the filter plate 5, and the clamping assembly 9 includes a first installation box 91, and a receiving groove 92 is opened on the top of the first installation box 91. The front and rear ends of the first installation box 91 along the sliding direction of the sliding device 6 are symmetrically fixedly connected with fixing rods 93, and a clamping plate 94 is rotatably connected to the fixing rod 93. A torsion spring 95 is also provided on the fixing rod 93, and one end of the torsion spring 95 is fixedly connected to the clamping plate 94, and the other end is fixedly connected to the fixing rod 93. The torsion spring 95 always has a tendency to cause the clamping plate 94 to rotate perpendicular to the horizontal plane. The front and rear ends of the receiving groove 92 block the two clamping plates 94 to form a triangular structure, and a clamping opening adapted to the hanging rods on both sides of the filter plate 5 is formed between the two clamping plates 94.

[0036] When in use, the sliding devices 6 on the two second guide rails 3 move synchronously, driving the first installation box 91 to move, and the filter plate 5 is slidably connected to the first guide rail 2 through the hanging rods on both sides. Then, when the first installation box 91 moves near the filter plate 5, first one of the clamping plates 94 hits the hanging rod of the filter plate 5, and then the first installation box 91 continues to approach the bottom of the filter plate 5. When the first installation box 91 continues to move forward, the hanging rod of the filter plate 5 will squeeze the clamping plate 94 that it first contacts into the receiving groove 92, and then the hanging rod of the filter plate 5 will be stuck between the two clamping plates 94, and then slide The driving device 6 drives the first installation box 91 to move in the opposite direction, separating the filter plate 5 clamped by the two clamping plates 94 from the other tightly fitted filter plate 5. Because the two sides of the accommodating groove 92 will clamp the clamping plates 94 to rotate perpendicular to the horizontal plane, the two clamping plates 94 can push the filter plate 5 to slide in the opposite direction through the hanging rod, so that the filter plate 5 is separated from the adjacent filter plate 5. After separation, the filter cake adhered to the filter cloth of the filter plate 5 will have a certain tendency to fall due to the action of gravity, and then the filter cake adhered to the filter plate 5 will be shaken off by the cooperation of the shaking frame 11 and the first installation box 91 below.

[0037] For further information, see Figure 4-Figure 5As shown, the sliding device 6 is fixedly connected to the movable plate 8, and a slide groove 13 is opened on the top of the movable plate 8. A support rod 17 is slidably connected in the slide groove 13. The first installation box 91 is slidably connected in the slide groove 13 through the support rod 17. In this way, the first installation box 91 can slide back and forth in the slide groove 13, thereby driving the hanging rod on one side of the filter plate 5 to slide back and forth;

[0038] For details, see Figure 4-Figure 5 As shown, the front and rear ends of the movable plate 8 along the sliding direction are fixedly connected with the mounting plates 15, and the front and rear ends of the first mounting box 91 are symmetrically provided with return springs 16, so that the first mounting box 91 always has a tendency to be located in the middle position of the mounting plate 15. One end of the return spring 16 is fixedly connected to the mounting plate 15, and the other end is fixedly connected to the first mounting box 91. The return springs 16 are provided at the front and rear ends of the first mounting box 91, which can keep the first mounting box 91 relatively stable when the two clamping plates 94 clamp the hanging rod of the filter plate 5, so that the hanging rod of the filter plate 5 can be smoothly inserted into the two clamping plates The plates 94 can cooperate with the back-and-forth reciprocating motion of the first mounting box 91 at the same time. Because of the elastic force of the return spring 16 and the drive of the shaking frame 11 below, the first mounting box 91 can swing in the slide groove 13 under inertia and elastic force. Moreover, due to the elastic force of the return spring 16, the reciprocating swing of the first mounting box 91 is not too regular. In this way, the irregular reciprocating swing of the first mounting box 91 on the other side in the opposite direction makes the filter plate 5 more violent than the regular reciprocating swing of the transmission, which is more conducive to the shedding of the filter cake of the filter plate 5. Because the traditional regular reciprocating swing The swing amplitude and frequency of the two sides of the filter plate 5 are made consistent. In this way, except for the filter cake in the initial stage, which will be subjected to the force of swinging in the opposite direction due to inertia, the filter cake residue adhering to the filter plate 5 or the filter cake with greater viscosity will maintain the same swing frequency as the filter plate 5 within a certain period of time. Then, such regular swinging has limited ability to cause the filter cake or filter cake residue on the filter plate 5 to fall off. Therefore, through the setting of the reset spring 16, the swing of the first installation box 91 can be driven by a certain inertia, and the swing of the regular shaking frame 11 can be used to drive the shaking frame 11 and the first installation box 91. There is a difference in the frequency of the swing, that is, the first installation box 91 may not have reset to the middle position of the slide groove 13, and the driving force of the shaking frame 11 has caught up, or the first installation box 91 has been rebounded to a position beyond the middle of the slide groove 13 by inertia and elastic force, and just collides head-on with the driving force of the shaking frame 11, which will increase or decrease the relative swing force, and generate an irregular driving force for the first installation box 91, causing the swing of the first installation box 91 to be irregular, thereby satisfying that the swing of the filter plate 5 and the filter cake or filter cake residue thereon always have different opposite forces, which is more conducive to its falling off.

[0039] For further information, see Figure 2 and Figure 4 As shown, a shaking frame 11 is provided on the driving assembly 10, and both ends of the shaking frame 11 are connected to the clamping components 9 on both sides of the sewage filter press device body 1; Figure 2 It can be seen that the two sections of the shaking frame 11 located on the third guide rail 4 are both U-shaped structures. The middle position of the shaking frame 11 is rotatably connected to the driving assembly 10. A movable groove 14 is provided on the side of the movable plate 8. A guide groove 12 is provided on one end of one section of the shaking frame 11. The support rod 17 is slidably connected in the guide groove 12. One end of one section of the shaking frame 11 is movably connected in the movable groove 14 through the support rod 17. Combined with the above, because half of the shaking frame 11 is a U-shaped structure, the entire shaking frame 11 will not affect the sliding of the filter plate 5. At the same time, it can also be equipped with a driving mechanism for the swing of the first mounting box 91, and from Figure 2 It can be concluded that if the shaking frame 11 rotates, the first mounting boxes 91 located on both sides of the shaking frame 11 will be driven to slide in the slide groove 13 in opposite directions. If the shaking frame 11 is continuously driven to rotate in the same direction and the same angle, and then cooperated with the return springs 16 at the front and rear ends of the first mounting box 91, the first mounting box 91 has a tendency to reset, which can also cause the shaking frame 11 to reset, so that the swing described above can be achieved. Moreover, there are return springs 16 at the front and rear ends of the first mounting box 91. First, it forms a combination of tension and elastic force for the first mounting box 91, which increases the reset ability of the first mounting box 91, which also increases the reset ability of the shaking frame 11, which also means that it can reset faster. Second, it can increase the inertia of the irregular reciprocating motion of the first mounting box 91, because when the spring is compressed or stretched and reset, it will expand and contract back and forth due to the inertia force, which explains why the first mounting box 91 can swing back and forth in the slide groove 13 with the return springs 16 at its front and rear ends.

[0040] For further information, see Figure 6 As shown, the driving assembly 10 includes a second mounting box 101, which is slidably connected to the third guide rail 4, and a driving motor 105 is fixedly connected inside the second mounting box 101. The output end of the driving motor 105 is fixedly connected to the driving gear 104, and the top of the second mounting box 101 is rotatably connected to a rotating rod 102. One end of the rotating rod 102 is fixedly connected to the middle position of the shaking frame 11, and the other end of the rotating rod 102 is fixedly connected to a driven gear 103, which is engaged with the driving gear 104.

[0041] It is worth mentioning that the driving gear 104 is partially toothed and partially smooth, and the angle at which the toothed portion of the driving gear 104 drives the driven gear 103 to rotate is adapted to the angle at which the shaking frame 11 needs to rotate when one end of a section of the shaking frame 11 moves from the middle position in the movable groove 14 to one side of the movable groove 14. It can be concluded that when the driving motor 105 drives the driving gear 104 to rotate, the teeth on the driving gear 104 engage with the driven gear 103, which drives the driven gear 103 to rotate a certain angle, thereby driving the shaking frame 11 to rotate a certain angle. When the teeth of the driving gear 104 disengage from the driven gear 103, the shaking frame 11 will be driven by the first gear. The reset springs 16 at the front and rear ends of an installation box 91 drive the reset, and then drive the shaking frame 11 to reset. When the driving gear 104 rotates again to engage with the driven gear 103, it continues to drive the driven gear 103 to rotate a certain angle, and then causes the shaking frame 11 to rotate a certain angle again, and so on. As a result, the first installation boxes 91 at both ends of the shaking frame 11 are driven by the shaking frame 11 through the support rod 17 to swing, and then reset under the action of the reset spring 16. Due to inertia and the elastic force and tension of the reset spring 16, irregular swings will be generated, increasing the swinging and oscillating force of the filter plate 5, so that the filter cake or filter cake residue on the filter plate 5 is always subjected to the opposite force and falls off.

[0042] To sum up, the problem of the filter cake on the filter plate 5 of the existing sludge dewatering device often falling off manually or by its own gravity is effectively solved. Even if a mechanical scraper is used, it is easy to damage the filter cloth, and filter cake residues are also easy to remain on the filter cloth. Even if a mechanical method is used to swing the filter plate 5, due to the regular swinging, the filter cake or filter cake residue on the filter plate 5 keeps swinging at the same frequency as the filter plate 5, and the shedding ability is limited.

[0043] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A sludge dewatering device, comprising a sewage filter press device body (1), wherein first guide rails (2) are symmetrically arranged on both sides of the sewage filter press device body (1), and a plurality of filter plates (5) are slidably arranged on the first guide rails (2), characterized in that: Second guide rails (3) are symmetrically arranged on both sides of the sewage filter press device body (1), a third guide rail (4) is arranged at the middle position of the top of the sewage filter press device body (1), the second guide rail (3) is provided with a sliding device (6) that can slide independently, a driving component (10) is slidably arranged on the third guide rail (4), a shaking frame (11) is provided on the driving component (10), a clamping component (9) for clamping the filter plate (5) is provided on the sliding device (6), and both ends of the shaking frame (11) are respectively connected to the clamping components (9) on both sides of the sewage filter press device body (1); The driving assembly (10) is used to drive the shaking frame (11) to swing back and forth, and the reciprocating swing of the shaking frame (11) is used to drive the clamping assembly (9) to swing back and forth; The clamping assembly (9) includes a first installation box (91), a receiving groove (92) is provided on the top of the first installation box (91), and a fixing rod (93) is symmetrically fixedly connected to the front and rear ends along the sliding direction of the sliding device (6) in the first installation box (91), and a clamping plate (94) is rotatably connected to the fixing rod (93). A torsion spring (95) is also provided on the fixing rod (93), one end of the torsion spring (95) is fixedly connected to the clamping plate (94), and the other end is fixedly connected to the fixing rod (93), and the torsion spring (95) always has a tendency to cause the clamping plate (94) to rotate perpendicular to the horizontal plane. The front and rear ends of the receiving groove (92) block the two clamping plates (94) to form a triangular structure, and a clamping opening adapted to the hanging rods on both sides of the filter plate (5) is formed between the two clamping plates (94); A movable plate (8) is fixedly connected to the sliding device (6), a sliding groove (13) is provided on the top of the movable plate (8), a support rod (17) is slidably connected in the sliding groove (13), and the first installation box (91) is slidably connected in the sliding groove (13) via the support rod (17); The movable plate (8) is fixedly connected to a mounting plate (15) at the front and rear ends along the sliding direction, and a return spring (16) is symmetrically provided between the front and rear ends of the first mounting box (91) and the mounting plate (15), so as to ensure that the first mounting box (91) always has a tendency to be located in the middle of the mounting plate (15), and one end of the return spring (16) is fixedly connected to the mounting plate (15), and the other end is fixedly connected to the first mounting box (91); A movable groove (14) is formed through the side of the movable plate (8), a guide groove (12) is formed on one end of a section of the shaking frame (11), the support rod (17) is slidably connected in the guide groove (12), and one end of a section of the shaking frame (11) is movably connected in the movable groove (14) through the support rod (17); The driving assembly (10) includes a second mounting box (101), the second mounting box (101) is slidably connected to the third guide rail (4), a driving motor (105) is fixedly connected in the second mounting box (101), an output end of the driving motor (105) is fixedly connected to a driving gear (104), a rotating rod (102) is rotatably connected to the top of the second mounting box (101), one end of the rotating rod (102) is fixedly connected to the middle position of the shaking frame (11), and the other end of the rotating rod (102) is fixedly connected to a driven gear (103), and the driven gear (103) is meshed with the driving gear (104); The driving gear (104) is partially toothed and partially smooth, and the angle at which the driven gear (103) is driven to rotate by the toothed portion of the driving gear (104) is adapted to the angle at which the shaking frame (11) needs to rotate when one end of a section of the shaking frame (11) moves from a middle position in the movable groove (14) to one side of the movable groove (14).

2. The sludge dewatering device according to claim 1, characterized in that: The two sections of the shaking frame (11) located on the third guide rail (4) are both U-shaped structures, and the middle position of the shaking frame (11) is rotatably connected to the driving assembly (10).

3. The sludge dewatering device according to claim 1, characterized in that: The third guide rail (4) is located above the filter plate (5), and the sliding devices (6) on the two second guide rails (3) move synchronously.

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