Sludge dewatering device

Abstract

The invention relates to the technical field of sludge dewatering, in particular to a sludge dewatering device which comprises a sewage filter pressing device body, first guide rails are symmetrically arranged on the two sides of the sewage filter pressing device body, a plurality of filter plates are arranged on the first guide rails in a sliding mode, and second guide rails are further symmetrically arranged on the two sides of the sewage filter pressing device body. A third guide rail is arranged in the middle of the top of the sewage filter pressing device body, a sliding device capable of automatically sliding is arranged on the second guide rail, a driving assembly is arranged on the third guide rail in a sliding mode, a shaking frame is arranged on the driving assembly, and a clamping assembly used for clamping a filter plate is arranged on the sliding device; the two ends of the shaking frame are connected with the clamping assemblies on the two sides of the sewage filter pressing device body respectively, the driving assembly is used for driving the shaking frame to swing in a reciprocating mode, and the shaking frame swings in a reciprocating mode to drive the clamping assemblies to swing in a reciprocating mode.

Description

Technical Field

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

[0002] The sewage sludge drag 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 dehydration treatment, laying a solid foundation for subsequent resource utilization or harmless disposal.

[0003] Sewage filter press is a pressure-driven solid-liquid separation equipment, widely used in sludge, chemical industry, environmental protection and other fields. After pre-treatment, sewage is sent to the feed system of the filter press, and the sewage is evenly injected into the filter medium of the filter press. The filter medium usually uses multi-layer filter cloth or filter plate with a certain porosity and filtration accuracy. The filter press applies a certain pressure to force the liquid in the sewage to pass through the filter medium, and at the same time, the solid particles gradually accumulate on the filter medium 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. As for the method of using a mechanical scraper, since the filter cloth is relatively fragile, the service life of the filter cloth is easily reduced by the mechanical scraper, and filter cake residues are easily left on the filter cloth. 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 adhered 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 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, 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 arranged on both sides of the sewage filter press body, a third guide rail is arranged at the middle position of the top of the sewage filter press body, a sliding device that can slide independently is arranged on the second guide rail, a driving component is slidably arranged on the third guide rail, a shaking frame is arranged on the driving component, a clamping component for clamping the filter plate is arranged on the sliding device, and both ends of the shaking frame are respectively connected to the clamping components 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 fixing 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 fixing rod, and a torsion spring is also provided on the fixing rod, one end of the torsion spring is fixedly connected to the clamping plate, and the other end is fixedly connected to the fixing rod, and 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 the technical solution, a movable plate is fixedly connected to the sliding device, a sliding groove is opened on the top of the movable plate, a support rod is slidably connected in the sliding groove, and the first installation box is slidably connected in the sliding groove through the support rod.

[0011] As a further improvement of the present technical solution, the movable plate is fixedly connected to a mounting plate at the front and rear ends 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 has a tendency to be located in the middle position of the mounting plate, and 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 technical solution, a movable groove is opened through the side of the movable plate, a guide groove is opened 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, an output end of the driving motor is fixedly connected to a driving gear, a rotating rod is rotatably connected to the top of the second mounting box, 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 toothed portion of the driving gear drives the driven gear to rotate at an angle that matches the angle that 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 reset spring, the first mounting box can swing back and forth irregularly in the slide groove 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 is convenient for enhancing 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 allows 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 part 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 realizes the effective removal of the filter cake on the filter plate, avoiding the problem of filter cloth damage that may be caused by the traditional mechanical scraper method. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 is a schematic structural diagram 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 It is a structural cross-sectional view of the movable plate 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 center.

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

[0028] 1. Sewage filter press device 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. Reset spring; 17. Support rod

[0029] 91. first installation box; 92. receiving groove; 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work 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 dropped off manually or by its own gravity. Even if a mechanical scraper is used, the filter cloth is easily damaged, and filter cake residues are easily left on the filter cloth. Even if the filter plate 5 is swung mechanically, the filter cake or filter cake residue on the filter plate 5 oscillates at the same frequency as the filter plate 5 due to the regular swing, and the shedding capacity is limited.

[0033] To this end, the present invention provides a sludge dewatering device, see Figure 1 As shown, it comprises a sewage filter press device body 1 , 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. The second guide rails 3 are provided with sliding devices 6 that can slide independently, and the sliding devices 6 on the two second guide rails 3 move synchronously. A driving assembly 10 is slidably arranged on the third guide rail 4.

[0035] Among them, see Figure 2-Figure 4 As shown, a clamping assembly 9 for clamping the filter plate 5 is provided on the sliding device 6, 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. Fixed rods 93 are symmetrically fixedly connected at 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 fixed rod 93. A torsion spring 95 is also provided on the fixed 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 fixed 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 to the vicinity of 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 first contacts it 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, and separates 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 plates 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 in coordination with the shaking frame 11 and the first installation box 91 described below.

[0037] For further information, see Figure 4-Figure 5As shown, a movable plate 8 is fixedly connected to the sliding device 6, a slide groove 13 is provided on the top of the movable plate 8, a support rod 17 is slidably connected in the slide groove 13, and the first installation box 91 is slidably connected in the slide groove 13 through the support rod 17, so that 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 movable plate 8 is fixedly connected with a mounting plate 15 at the front and rear ends along the sliding direction, and a return spring 16 is symmetrically arranged between the front and rear ends of the first mounting box 91 and the mounting plate 15, 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 spring 16 is arranged 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 first mounting box 91 can be swung in the chute 13 under inertia and elastic force due to the elastic force of the return spring 16 and the driving of the shaking frame 11 below. 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 first mounting box 91 on the other side performs irregular reciprocating swing in the opposite direction. Compared with the regular reciprocating swing of the transmission, the filter plate 5 is more violently vibrated, which is more conducive to the shedding of the filter cake of the filter plate 5. The swing amplitude and frequency of the two sides of the filter plate 5 are kept consistent. In this way, except for the initial stage where the filter cake will be subjected to the force of swinging and falling off 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 for 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 shaking frame 11 can be driven regularly, which will make 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 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. This will increase or decrease the relative swing force, and generate an irregular driving force for the first installation box 91, causing the first installation box 91 to swing irregularly, 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 shedding.

[0039] For further information, see Figure 2 and Figure 4 As shown, a shaking frame 11 is provided on the driving assembly 10, and the two ends of the shaking frame 11 are respectively connected to the clamping assemblies 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 opened through the side of the movable plate 8, and a guide groove 12 is opened on one end of one section of the shaking frame 11. The support rod 17 is slidably connected in the guide groove 12, and 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, and it can also be equipped with a swing drive for the first mounting box 91, and from Figure 2 It can be concluded that if the shaking frame 11 rotates, the first installation boxes 91 located on both sides of the shaking frame 11 will be driven to slide in the opposite directions in the slide groove 13. If the shaking frame 11 is continuously driven to rotate in the same direction and the same angle, the return springs 16 at the front and rear ends of the first installation box 91 will cause the first installation box 91 to have a tendency to return, which can also cause the shaking frame 11 to return, so that the swing described above can be achieved. In addition, there are return springs 16 at the front and rear ends of the first installation box 91. First, for the first installation box 91, a combination of tension and elastic force is formed, so that the return ability of the first installation box 91 is increased, which also causes the return ability of the shaking frame 11 to increase, which also means that it can be reset faster. Second, it can increase the inertia of the irregular reciprocating motion of the first installation box 91, because the spring will expand and contract back and forth due to the inertia force when it is compressed or stretched and reset, which explains why the first installation box 91 can realize the front and rear swing 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 component 10 includes a second installation box 101, which is slidably connected to the third guide rail 4, and a driving motor 105 is fixedly connected inside the second installation box 101. The output end of the driving motor 105 is fixedly connected to a driving gear 104, and the top of the second installation 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, and the driven gear 103 is meshed with the driving gear 104.

[0041] It is worth mentioning that the driving gear 104 is partially toothed and partially smooth, and the toothed portion of the driving gear 104 drives the driven gear 103 to rotate at an angle that matches the angle at which 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, thereby the shaking frame 11 needs to rotate. It can be concluded that when the driving motor 105 drives the driving gear 104 to rotate, the teeth on the driving gear 104 mesh with the driven gear 103, which will drive 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 moved. The reset springs 16 at the front and rear ends of an installation box 91 drive the reset, and then drive the reset of the shaking frame 11. 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. 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 are 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 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 swing, 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 by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached 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); a sliding device (6) that can slide independently is arranged on the second guide rail (3); a driving component (10) is slidably arranged on the third guide rail (4); a shaking frame (11) is arranged on the driving component (10); a clamping component (9) for clamping the filter plate (5) is arranged on the sliding device (6); and two 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.

2. The sludge dewatering device according to claim 1, characterized in that: The clamping assembly (9) comprises 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 of the first installation box (91) along the sliding direction of the sliding device (6), 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, and 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).

3. The sludge dewatering device according to claim 2, characterized in that: 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) through the support rod (17).

4. The sludge dewatering device according to claim 3, characterized in that: 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 arranged between the front and rear ends of the first mounting box (91) and the mounting plate (15), so that the first mounting box (91) always has a tendency to be located in the middle position 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).

5. The sludge dewatering device according to claim 3, 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).

6. The sludge dewatering device according to claim 5, characterized in that: 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).

7. The sludge dewatering device according to claim 6, characterized in that: The driving assembly (10) includes a second installation box (101), the second installation box (101) is slidably connected to the third guide rail (4), a driving motor (105) is fixedly connected inside the second installation box (101), the output end of the driving motor (105) is fixedly connected to a driving gear (104), the top of the second installation 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), and the driven gear (103) is meshed with the driving gear (104).

8. The sludge dewatering device according to claim 7, characterized in that: The driving gear (104) is partially toothed and partially smooth, and the toothed portion of the driving gear (104) drives the driven gear (103) to rotate at an angle that matches 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).

9. 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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