Sludge dewatering device for electroosmosis stacked screw type domestic sewage treatment

Abstract

The utility model discloses an electroosmosis stacked screw type sludge dewatering device for domestic sewage treatment. The device comprises a device main body and a rotating seat, the rotating seat is arranged on the outer wall of the device main body, the inner side of the rotating seat is rotatably connected with a spiral rod, the inner wall of the device main body is rotatably connected with a spiral conical rod, flange pieces are welded to the ends, opposite to each other, of the spiral rod and the spiral conical rod, and the two flange pieces are connected together through a bolt. And the driving structure is arranged on the outer wall of one end of the device main body. By using the spiral conical rod at the rear end, when muddy water is pushed to the spiral conical rod by the spiral rod, the forward moving space of sludge pushed by the spiral conical rod is gradually reduced, and meanwhile, the blockage of the discharge port by the resistance adjusting sheet is quantitatively discharged, so that the sludge is accumulated at the front end of the spiral conical rod to generate pressure, and more moisture is removed; and the sludge water dewatering effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an electro-osmosis spiral stacking type sludge dewatering device for domestic sewage treatment. Background Art

[0002] Sewage treatment requires the use of a dehydrator to dehydrate the water-containing sludge. Electro-osmosis dehydrator is a common type. The electro-osmosis dehydration method uses the principle of electro-osmosis. Under the action of the electric field, the counterions in the diffusion layer carry water to the electrodes, which can dehydrate the sludge efficiently and dryly. It has unique advantages in sludge dehydration.

[0003] A current electro-osmosis screw stacking dehydrator, as described in the patent with publication number CN220502886U, comprises: a dehydrator body, a support base is arranged below the dehydrator body, a support leg is fixedly connected to one side of the top of the support base, a hydraulic cylinder is installed on the other side of the top of the support base, a mounting plate is installed on one side of the dehydrator body, a feed port is installed on one side of the mounting plate, a spray pipe is installed on the top of the dehydrator body, mounting slots are arranged at the top and bottom of one side of the dehydrator body, and mounting bolts are movably connected inside the mounting plate. Utility Model Content

[0004] The purpose of the utility model is to provide an electro-osmosis spiral stacking type sludge dewatering device for domestic sewage treatment, so as to solve the problem proposed in the above-mentioned background technology. Regarding the related technology in the above-mentioned, the applicant believes that when an electro-osmosis spiral stacking type dewatering machine is working, the driving shaft drives the spiral stacking pieces to rotate to push the sludge forward, and the mud cake is discharged from the sewage pipe in the front. Since the sewage pipe has no resistance to discharge downward, the mud is easily discharged from the sewage pipe after being transported to the front end, resulting in poor sludge dehydration and high water content, thereby reducing the effect of mud and water dehydration.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electro-osmosis spiral stacking type sludge dewatering device for domestic sewage treatment, comprising: a device body, a rotating seat, the rotating seat is placed on the outer wall of the device body, the inner side of the rotating seat is rotatably connected to a spiral rod, the inner wall of the device body is rotatably connected to a spiral cone rod, the spiral rod and the spiral cone rod are both welded with flanges at one end opposite to the other end, and the two flanges are connected together by bolts;

[0006] A driving structure is placed on the outer wall of one end of the device body, the rotating shaft of the spiral cone rod is extended and connected to the driving structure, and a threaded hole is opened on the outer wall of the rotating shaft extending from the spiral cone rod, and a resistance adjusting piece is inserted on the rotating shaft of the spiral cone rod, and the resistance adjusting piece is threadedly connected to the threaded hole through a screw.

[0007] By adopting the above technical solution, the device uses the spiral cone rod at the rear end. When the muddy water is pushed to the spiral cone rod by the spiral rod, the moving space of the spiral cone rod for pushing the sludge forward will gradually decrease. At the same time, the regulating piece will quantitatively discharge the obstruction of the discharge port, which will cause the sludge to accumulate at the front end of the spiral cone rod and generate pressure, thereby removing more water and improving the dehydration effect of the sludge water.

[0008] Preferably, a fixing rod is disposed on the inner wall of the device body, a plurality of cathode sheets are inserted into the outer wall of the fixing rod to form a drainage channel, and the spiral rod and the spiral cone rod are located inside the drainage channel formed by the cathode sheets.

[0009] By adopting the above technical solution, multiple cathode sheets can be passed through the fixed rod to form a dehydration channel. After the sewage enters, with the assistance of electro-osmosis, the dehydration effect of the spiral rod and the spiral cone rod can be improved.

[0010] Preferably, the sludge dewatering device also includes: a first water trough, which is arranged inside the device body, a return pipe is arranged on one side of the first water trough, a sewage pump is arranged at the bottom of the platform at one end of the device body, and one end of the return pipe is connected to the suction port of the sewage pump, and a flocculation box, which is placed on the platform at one end of the device body, a sewage pipe is arranged on the top of the flocculation box, and the other end of the sewage pipe is connected to the discharge port of the sewage pump.

[0011] By adopting the above technical scheme, the first water tank is set up to receive the relatively viscous muddy water squeezed out from the spiral cone rod, and then it is sucked away by the sewage pump and the reflux pipe, and discharged from the sewage pipe into the flocculation box for flocculation again for dehydration, thereby avoiding the viscous muddy water generated by dehydration from being mixed with muddy water with less sludge and discharged together, reducing the sludge content after dehydration, and improving the overall dehydration effect of the sludge water.

[0012] Preferably, a second water tank is provided inside the device body, a drain pipe is provided on one side of the second water tank, the first water tank is located below the spiral cone rod, and the second water tank is located below the spiral rod.

[0013] By adopting the above technical scheme, the viscous muddy water falling from the spiral cone rod can be collected by the first water tank for re-flocculation and dehydration, so as to improve the effect of separating the sludge water. At the same time, the second water tank will catch the separated clearer sewage and can be directly discharged to the next process for purification, which can reduce the sludge content generated by the next purification.

[0014] Preferably, the diameter of the spiral cone rod increases gradually from one end of the flange to the other end, and the pitch between the spiral blades of the spiral cone rod is smaller than the pitch between the spiral blades of the spiral rod.

[0015] By adopting the above technical solution, when the sludge is pushed forward by the above structure, the front extrusion space will become smaller and smaller, which will cause accumulation and pressure at the sewage outlet, reduce the water content of the discharged mud cake, and thus improve the dehydration effect of the sludge.

[0016] Preferably, a plurality of evenly spaced threaded holes are formed on the rotating shaft of the spiral cone rod.

[0017] By adopting the above technical solution and opening a plurality of threaded holes on the rotating shaft, the size of the gap between the sewage outlet and the regulating plate can be adjusted according to the requirements of mud cake dehydration, thereby achieving control of the moisture content of the mud cake.

[0018] Preferably, the device body, the spiral rod and the spiral cone rod are arranged at a certain angle, and the mud cake discharge port of the device body is on the inner side of the driving structure.

[0019] By adopting the above technical solution and designing the above structure to be tilted at a certain angle, when sewage needs to be transported upward after being discharged, the sewage will leak out from the bottom faster under the action of gravity, thereby increasing the speed of initial dehydration and further improving the overall efficiency of sludge water dehydration.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] (1) By using the spiral cone rod at the rear end, when the muddy water is pushed to the spiral cone rod by the spiral rod, the moving space of the spiral cone rod to push the sludge forward will gradually decrease. At the same time, the regulating piece will block the discharge port for quantitative discharge, which will cause the sludge to accumulate at the front end of the spiral cone rod to generate pressure, thereby removing more water and improving the dehydration effect of the sludge water;

[0022] (2) By setting up the first water tank, the relatively viscous muddy water squeezed out from the spiral cone rod can be received, and then it can be sucked away by the sewage pump and the return pipe, and discharged from the sewage pipe into the flocculation box for flocculation again for dehydration, so as to avoid the viscous muddy water produced by dehydration from being mixed with muddy water with less sludge and discharged together, thereby reducing the sludge content after dehydration and improving the overall dehydration effect of the sludge water. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the device of the utility model;

[0024] Figure 2 This is an internal diagram of the overall structure of the device of the utility model;

[0025] Figure 3 It is a schematic diagram of the structure of the spiral rod and the spiral cone rod of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the resistance adjusting piece of the utility model.

[0027] In the figure: 1. Device body; 2. Rotating seat; 3. Screw rod; 4. Flange; 5. Spiral cone rod; 6. Driving structure; 7. Regulating resistor; 8. Threaded hole; 9. Screw; 10. Fixing rod; 11. Cathode plate; 12. First water tank; 13. Reflux pipe; 14. Sewage pump; 15. Flocculation tank; 16. Sewage pipe; 17. Second water tank; 18. Drain pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The following is combined with Figure 1-4 The utility model is described in further detail.

[0030] See also Figures 1 to 4 The utility model provides an embodiment: an electro-osmosis spiral stacking type sludge dewatering device for domestic sewage treatment, comprising: a device body 1; a rotating seat 2, the rotating seat 2 is placed on the outer wall of the device body 1, the rotating seat 2 is welded to the outer wall of the device body 1, the inner side of the rotating seat 2 is rotatably connected with a spiral rod 3, one end of the spiral rod 3 is inserted into the bearing inside the rotating seat 2, for ensuring the normal rotation of the spiral rod 3, the inner wall of the device body 1 is rotatably connected with a spiral cone rod 5, the spiral rod 3 and the spiral cone rod 5 are welded with a flange 4 at the opposite end, and the two flanges 4 are connected together by bolts, and the flanges 4 are connected by bolts by docking, so that the spiral rod 3 and the spiral cone rod 5 can be connected to form an integral structure, which can be rotated synchronously to promote the sludge to move and dehydrate.

[0031] A driving structure 6 is placed on the outer wall of one end of the device body 1. The driving structure 6 is composed of an existing structural motor and a conversion box, and is used to transmit the power of the motor to the spiral cone rod 5 through the conversion box. The rotating shaft of the spiral cone rod 5 is extended and connected to the driving structure 6, and the outer wall of the rotating shaft extending from the spiral cone rod 5 is provided with a threaded hole 8, and a resistance plate 7 is inserted on the rotating shaft of the spiral cone rod 5. The resistance plate 7 is located at the sewage outlet of the device body 1, and is used to block the discharge of the mud cake, so that the sludge is connected to the inside to generate pressure, thereby improving the dehydration effect, and improving the dehydration effect of the sludge water, and the resistance plate 7 is threadedly connected to the threaded hole 8 by a screw 9.

[0032] See also Figure 1 , Figure 2 and Figure 4The inner wall of the device body 1 is provided with a fixed rod 10, and the outer wall of the fixed rod 10 is plugged with multiple cathode sheets 11 to form a sewage discharge channel, and the spiral rod 3 and the spiral cone rod 5 are located inside the sewage discharge channel formed by the cathode sheets 11. The fixed rod 10 can penetrate multiple cathode sheets 11 to form a dehydration channel. After the sewage enters, the dehydration effect of the spiral rod 3 and the spiral cone rod 5 can be improved with the assistance of electroosmosis. The sludge dehydration device also includes: a first water tank 12, which is arranged inside the device body 1. The first water tank 12 is formed by welding a partition on the inner wall of the device body 1, which is used to receive a small amount of viscous muddy water squeezed out by the spiral cone rod 5. A return pipe 13 is provided on one side of the first water tank 12. The return pipe 13 is used to discharge the collected viscous muddy water for re-flocculation and dehydration. A sewage pump 14 is provided at the bottom of the platform at one end of the device body 1, and one end of the return pipe 13 is connected to the suction port of the sewage pump 14. The sewage pump 14 is connected to the bottom of the platform at one end of the device body 1 through a fixed sleeve, which is used to absorb viscous muddy water for re-flocculation and dehydration.

[0033] The flocculation box 15 is placed on a platform at one end of the device body 1. A sewage pipe 16 is arranged on the top of the flocculation box 15, and the other end of the sewage pipe 16 is connected to the discharge port of the sewage pump 14. The sewage is sucked away by the sewage pump 14 and the return pipe 13, and discharged from the sewage pipe 16 into the flocculation box 15 for flocculation again for dehydration, so as to avoid the viscous muddy water produced by dehydration from mixing with the muddy water with less sludge and discharge together, reduce the sludge content after dehydration, and improve the overall dehydration effect of the sludge water. A second water tank 17 is provided inside the body 1, and a drain pipe 18 is provided on one side of the second water tank 17. The first water tank 12 is located below the spiral cone rod 5. The viscous muddy water dropped from the spiral cone rod 5 can be collected through the first water tank 12 for re-flocculation and dehydration, so as to improve the effect of separating the sludge water. The second water tank 17 is located below the spiral rod 3. The second water tank 17 will receive the separated relatively clear sewage and can be directly discharged to the next process for purification, which can reduce the sludge content generated by the next purification.

[0034] See also Figures 1 to 4The diameter of the spiral cone rod 5 increases from one end of the flange 4 to the other end, and the spiral blade spacing of the spiral cone rod 5 is smaller than the spiral blade spacing of the spiral rod 3. When the above structure pushes the sludge forward, the front extrusion space will become smaller and smaller, which will cause pressure to accumulate at the sewage outlet, reduce the water content of the discharged mud cake, and thus improve the dehydration effect of the sludge. A plurality of uniform threaded holes 8 are provided on the rotating shaft of the spiral cone rod 5. A plurality of threaded holes 8 are provided on the rotating shaft, and the size of the gap between the sewage outlet and the regulating resistor 7 can be adjusted according to the requirements of mud cake dehydration, so as to achieve the control of the water content of the mud cake. The device body 1, the spiral rod 3 and the spiral cone rod 5 are inclined at a certain angle, and the inner side of the mud cake discharge port driving structure 6 of the device body 1 is inclined at a certain angle. When the sewage is discharged, it needs to be transported upward. Under the action of gravity, the sewage will leak out faster from the bottom, thereby increasing the speed of initial dehydration, and then improving the overall efficiency of sludge water dehydration.

[0035] Working principle: When in use, the flocculation box 15 transports the flocculated sludge water from the rotating seat 2 through the pipeline, and the driving structure 6 drives the spiral cone rod 5 and the spiral rod 3 to rotate in the channel formed by the cathode plate 11. The sludge water is dehydrated and concentrated in the spiral rod 3 section. When the concentrated sludge water is pushed to the spiral cone rod 5 for further dehydration, when the sludge is dehydrated and moved to the sewage outlet, the space of the spiral cone rod 5 section gradually shrinks, and at the same time, under the obstruction of the regulating piece 7, only the mud cake can be discharged quantitatively, which will cause the sludge to generate greater pressure at the sewage outlet, thereby removing more sewage and achieving the effect of improving the dehydration effect.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. An electro-osmosis spiral-stacked sludge dewatering device for domestic sewage treatment, characterized in that: include: Device body (1); A rotating seat (2), the rotating seat (2) being placed on the outer wall of the device body (1), the inner side of the rotating seat (2) being rotatably connected to a spiral rod (3), the inner wall of the device body (1) being rotatably connected to a spiral cone rod (5), the spiral rod (3) and the spiral cone rod (5) being welded to one end opposite to the other end, and the two flanges (4) being connected together by bolts; A driving structure (6), the driving structure (6) being placed on an outer wall at one end of the device body (1), the rotating shaft of the spiral cone rod (5) extending and connected to the driving structure (6), and a threaded hole (8) being provided on the outer wall of the rotating shaft extending from the spiral cone rod (5); The resistance adjusting piece (7) is inserted on the rotating shaft of the spiral cone rod (5), and the resistance adjusting piece (7) is threadedly connected in the threaded hole (8) through a screw (9).

2. The electro-osmosis spiral-stacked sludge dewatering device for domestic sewage treatment according to claim 1, characterized in that: A fixing rod (10) is disposed on the inner wall of the device body (1), a plurality of cathode plates (11) are inserted into the outer wall of the fixing rod (10) to form a sewage discharge channel, and the spiral rod (3) and the spiral cone rod (5) are located inside the sewage discharge channel formed by the cathode plates (11).

3. The electro-osmosis spiral-stacked sludge dewatering device for domestic sewage treatment according to claim 1, characterized in that: The sludge dewatering device also includes: A first water tank (12), the first water tank (12) being arranged inside the device body (1), a return pipe (13) being arranged on one side of the first water tank (12), a sewage pump (14) being arranged at the bottom of the platform at one end of the device body (1), and one end of the return pipe (13) being connected to the suction port of the sewage pump (14); A flocculation box (15) is placed on a platform at one end of the device body (1). A sewage pipe (16) is arranged on the top of the flocculation box (15), and the other end of the sewage pipe (16) is connected to the discharge outlet of the sewage pump (14).

4. The electro-osmosis spiral-stacked sludge dewatering device for domestic sewage treatment according to claim 3, characterized in that: A second water tank (17) is arranged inside the device body (1), a drainage pipe (18) is arranged on one side of the second water tank (17), the first water tank (12) is located below the spiral cone rod (5), and the second water tank (17) is located below the spiral rod (3).

5. The electro-osmosis spiral stacking sludge dewatering device for domestic sewage treatment according to claim 1, characterized in that: The diameter of the spiral cone rod (5) increases gradually from one end of the flange (4) to the other end, and the pitch of the spiral blades of the spiral cone rod (5) is smaller than the pitch of the spiral blades of the spiral rod (3).

6. The electro-osmosis spiral-stacked sludge dewatering device for domestic sewage treatment according to claim 1, characterized in that: A plurality of evenly spaced threaded holes (8) are provided on the rotating shaft of the spiral cone rod (5).

7. The electro-osmosis spiral stacking sludge dewatering device for domestic sewage treatment according to claim 1, characterized in that: The device body (1), the spiral rod (3) and the spiral cone rod (5) are arranged at a certain angle, and the mud cake discharge port of the device body (1) is located on the inner side of the driving structure (6).

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