Sludge centrifugal dewatering device
By combining a screw rotation extrusion mechanism with a centrifugal rotation filter cartridge, the problem of incomplete dewatering of high-concentration sludge is solved, achieving efficient and thorough sludge dewatering.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏普利斯环保科技有限公司
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-05
AI Technical Summary
High-concentration sludge from municipal and food processing industries has high water content and high fluidity. When using screw extrusion, the contact area is limited, resulting in incomplete dehydration.
It adopts a dual dehydration mechanism, combining a screw and a filter cartridge for dehydration. The screw rotation and extrusion are combined with the centrifugal rotation of the filter cartridge, and a scraper cleans the surface of the filter cartridge to prevent clogging.
It improves dewatering efficiency and effectiveness, prevents filter cartridge clogging, and ensures thorough dewatering of sludge.
Smart Images

Figure CN224325267U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dewatering device technology, and in particular to a sludge centrifugal dewatering device. Background Technology
[0002] A sludge centrifugal dewatering device is a specialized device for treating sludge, separating solids and liquids through centrifugal force. This device is widely used in wastewater treatment plants and industrial wastewater treatment facilities to reduce sludge volume and facilitate subsequent disposal or utilization.
[0003] Sludge centrifugal dewatering devices often use screw extrusion to dewater sludge. High-concentration sludge from municipal and food processing industries often has high water content and high fluidity. When using screw extrusion to push the sludge out through filter gaps or screens, the contact area is limited, which may lead to incomplete dewatering. Therefore, a sludge centrifugal dewatering device is proposed. Utility Model Content
[0004] The main purpose of this invention is to provide a sludge centrifugal dewatering device, which solves the problem that high-concentration sludge from municipal and food processing industries often has high water content and high fluidity. When the sludge is squeezed and pushed by a screw, the limited contact area when the sludge is discharged through the filter gap or filter screen may lead to incomplete dewatering.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A sludge centrifugal dewatering device includes a mounting base. Two first mounting plates are fixedly connected at equal intervals on the upper interior of the mounting base. A first mounting cylinder is fixedly connected between the two first mounting plates. A first mounting groove is opened on one side of the upper part of the first mounting cylinder. A filter cylinder is movably sleeved in the first mounting groove. A fourth gear is fixedly sleeved on the outer side of the filter cylinder. A third mounting plate is fixedly connected to the outer side of the first mounting cylinder. A second motor is fixedly connected to one side of the third mounting plate. A third gear is fixedly connected to the output end of one side of the second motor. The inner teeth of the third gear are engaged with the fourth gear.
[0007] Furthermore, a second mounting cylinder is fixedly connected to the outside of the first mounting cylinder, and the second mounting cylinder is movably sleeved on the outside of the filter cylinder. A sludge discharge trough is provided on the lower side of the second mounting cylinder.
[0008] Furthermore, a second mounting groove is provided on the lower side of the first mounting cylinder, a second mounting plate is fixedly connected to the outer side of the first mounting cylinder, a first motor is fixedly connected to the inner side of the second mounting plate, a first gear is fixedly connected to the inner output end of the first motor, a second gear is toothed below the first gear, a screw is fixedly sleeved inside the second gear, and the screw passes through the second mounting groove, with one end of the screw movably installed inside the filter cylinder.
[0009] Furthermore, a third mounting groove is provided on the outer side of the second mounting cylinder, one end of the screw passes through the third mounting groove, and two fourth mounting plates are fixedly connected at equal intervals on the outer side of the second mounting cylinder. A limiting sleeve is fixedly connected between the two fourth mounting plates, and the limiting sleeve is movably sleeved on the outer side of the screw.
[0010] Furthermore, a scraper is fixedly connected to the inner side of the first mounting cylinder, and the inner side of the scraper abuts against the filter cylinder. A baffle is fixedly connected inside the first mounting cylinder, and the baffle is movably sleeved on the outer side of the filter cylinder. A drain pipe is fixedly connected to the lower side of the first mounting cylinder.
[0011] Furthermore, a connecting groove is formed inside the screw, and a discharge port is formed on one side of the screw.
[0012] Furthermore, a control panel is fixedly connected to the outer side of the mounting base, and the control panel is electrically connected to the first motor and the second motor.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. This utility model, through the design of a filter cartridge, enables dual dewatering by combining a screw and a filter cartridge, thereby improving dewatering efficiency and effect. The second motor is activated, and through a third gear, it drives a fourth gear to rotate. The fourth gear then drives the filter cartridge to rotate, simultaneously centrifugally dewatering the sludge. Simultaneously, the first motor is activated, and through a first gear and a second gear, it drives the screw to rotate. During rotation, the screw squeezes and pushes the sludge to dewater, thus achieving dual dewatering through the combination of the screw and the filter cartridge. This design enables dual dewatering through the combination of the screw and the filter cartridge, improving both dewatering efficiency and effect.
[0015] 2. This utility model, through the addition of a scraper, can clean the filter cartridge from the outside, preventing sludge from clogging the surface of the filter cartridge and affecting the filtration effect. During the rotation of the filter cartridge, the scraper can continuously scrape off the surface of the filter cartridge, preventing sludge from accumulating and clogging the outer surface of the filter cartridge. Through this design, the filter cartridge can be cleaned from the outside, preventing sludge from clogging the surface of the filter cartridge and affecting the filtration effect.
[0016] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of a sludge centrifugal dewatering device according to the present invention from the first angle.
[0018] Figure 2 This is a schematic diagram of the overall structure of a sludge centrifugal dewatering device according to the present invention from a second angle.
[0019] Figure 3 This is a partial structural diagram of the scraper of a sludge centrifugal dewatering device according to the present invention.
[0020] Figure 4 This is a partial structural diagram of the sludge discharge trough of a sludge centrifugal dewatering device according to this utility model.
[0021] Figure 5 This is a partial structural diagram of the filter cylinder of a sludge centrifugal dewatering device according to the present invention.
[0022] Figure 6 This is a partial structural diagram of the screw of a sludge centrifugal dewatering device according to the present invention.
[0023] In the diagram: 1. Mounting base; 2. Control panel; 3. First mounting plate; 4. First mounting cylinder; 5. Second mounting plate; 6. First motor; 7. First gear; 8. Second gear; 9. Drain pipe; 10. Third mounting plate; 11. Second motor; 12. Baffle; 13. Third gear; 14. Fourth gear; 15. Filter cylinder; 16. Sludge discharge trough; 17. Limiting sleeve; 18. Fourth mounting plate; 19. Screw; 21. Connecting groove; 22. Discharge port; 23. Scraper; 24. Second mounting cylinder. Detailed Implementation
[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0025] like Figures 1-5As shown, a sludge centrifugal dewatering device includes a mounting base 1. Two first mounting plates 3 are fixedly connected at equal intervals on the upper part of the mounting base 1. A first mounting cylinder 4 is fixedly connected between the two first mounting plates 3. A first mounting groove is opened on one side of the upper part of the first mounting cylinder 4. A filter cylinder 15 is movably sleeved in the first mounting groove. A fourth gear 14 is fixedly sleeved on the outer side of the filter cylinder 15. A third mounting plate 10 is fixedly connected to the outer side of the first mounting cylinder 4. A second motor 11 is fixedly connected to one side of the third mounting plate 10. A third gear 13 is fixedly connected to the output end of one side of the second motor 11. The inner teeth of the third gear 13 are connected to the fourth gear 14. By adopting the above technical solution, the filter cylinder 15 is provided with a number of filter holes, which can retain sludge in the filter cylinder 15 and discharge sludge at the same time.
[0026] The third gear 13 is disposed inside the first mounting cylinder 4.
[0027] like Figures 1-4 As shown, a second mounting cylinder 24 is fixedly connected to the outside of the first mounting cylinder 4, and the second mounting cylinder 24 is movably sleeved on the outside of the filter cylinder 15. A sludge discharge trough 16 is provided on the lower side of the second mounting cylinder 24. By adopting the above technical solution, sludge in the second mounting cylinder 24 can be discharged from the bottom of the sludge discharge trough 16.
[0028] like Figure 1-6 As shown, a second mounting groove is provided on one side of the lower part of the first mounting cylinder 4. A second mounting plate 5 is fixedly connected to the outer side of the first mounting cylinder 4. A first motor 6 is fixedly connected to the inner side of the second mounting plate 5. A first gear 7 is fixedly connected to the inner output end of the first motor 6. A second gear 8 is toothed below the first gear 7. A screw 19 is fixedly sleeved inside the second gear 8. The screw 19 passes through the second mounting groove, and one end of the screw 19 is movably installed inside the filter cylinder 15. By adopting the above technical solution, screw blades are fixedly connected to the surface of the screw 19, which can cooperate with the filter cylinder 15 to squeeze and push the sludge.
[0029] A protective cover is installed on the outside of the first mounting cylinder 4 to protect the movement of the first gear 7 and the second gear 8 and prevent external interference.
[0030] like Figures 1-5 As shown, a third mounting groove is provided on the outer side of the second mounting cylinder 24. One end of the screw 19 passes through the third mounting groove. Two fourth mounting plates 18 are fixedly connected at equal intervals on the outer side of the second mounting cylinder 24. A limiting sleeve 17 is fixedly connected between the two fourth mounting plates 18, and the limiting sleeve 17 is movably sleeved on the outer side of the screw 19. With this arrangement, sludge with high water content and high fluidity can be injected into the screw 19 through the connecting groove 21 via the limiting sleeve 17.
[0031] like Figures 1-4As shown, a scraper 23 is fixedly connected to the inner side of the first mounting cylinder 4, and the inner side of the scraper 23 abuts against the filter cylinder 15. A baffle 12 is fixedly connected inside the first mounting cylinder 4, and the baffle 12 is movably sleeved on the outer side of the filter cylinder 15. A drain pipe 9 is fixedly connected to the lower side of the first mounting cylinder 4. With this arrangement, the water in the sludge removed from the filter cylinder 15 can be discharged through the drain pipe 9.
[0032] The baffle 12 can protect the movement of the third gear 13 and the fourth gear 14 and prevent sludge or sewage from interfering with their movement.
[0033] A connecting groove 21 is provided inside the screw 19, and a discharge port 22 is provided on one side of the screw 19. With this setting, the discharge port 22 is designed to be inclined or tangential, and centrifugal force is used to assist in the discharge of sludge.
[0034] A control panel 2 is fixedly connected to the outside of the mounting base 1. The control panel 2 is electrically connected to the first motor 6 and the second motor 11. With this configuration, the control panel 2 can control the first motor 6 and the second motor 11.
[0035] In use, the mounting base 1 is placed on a horizontal plane, and an external power supply is connected through the control panel 2. Through the limiting sleeve 17, sludge with high water content and high fluidity can be injected into the screw 19 through the connecting groove 21. The sludge enters the filter cartridge 15 through the discharge port 22. The second motor 11 is started, and the second motor 11 drives the fourth gear 14 to rotate through the third gear 13. The fourth gear 14 drives the filter cartridge 15 to rotate. During the rotation of the filter cartridge 15, the sludge is centrifugally rotated simultaneously. At the same time, the first motor 6 is started, and the first motor 6 drives the screw 19 to rotate through the first gear 7 and the second gear 8. During the rotation of the screw 19, the sludge is squeezed and dewatered, thereby achieving dual dewatering by combining the screw 19 and the filter cartridge 15.
[0036] During the rotation of the filter cartridge 15, the scraper 23 can continuously scrape the surface of the filter cartridge 15 to prevent sludge from accumulating and clogging the outer surface of the filter cartridge 15.
[0037] The water in the sludge removed from the filter cylinder 15 can be discharged through the drain pipe 9. The screw 19 squeezes and pushes the sludge into the second mounting cylinder 24, and the sludge in the second mounting cylinder 24 can be discharged from the bottom of the sludge discharge trough 16.
[0038] This utility model provides a sludge centrifugal dewatering device, which solves the problem that high-concentration sludge in municipal, food processing and other industries often has high water content and high fluidity. When the sludge is squeezed and pushed by the screw 19 and discharged through the filter gap or filter screen, the contact area is limited, which may lead to incomplete dewatering. It is quite practical.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A sludge centrifugal dewatering device, comprising a mounting base (1), characterized in that: Two first mounting plates (3) are fixedly connected at equal intervals on the upper interior of the mounting base (1). A first mounting cylinder (4) is fixedly connected between the two first mounting plates (3). A first mounting groove is opened on one side of the upper part of the first mounting cylinder (4). A filter cylinder (15) is movably sleeved in the first mounting groove. A fourth gear (14) is fixedly sleeved on the outer side of the filter cylinder (15). A third mounting plate (10) is fixedly connected on the outer side of the first mounting cylinder (4). A second motor (11) is fixedly connected on one side of the third mounting plate (10). A third gear (13) is fixedly connected to the output end on one side of the second motor (11). The inner teeth of the third gear (13) are connected to the fourth gear (14).
2. The sludge centrifugal dewatering device according to claim 1, characterized in that: The second mounting cylinder (24) is fixedly connected to the outside of the first mounting cylinder (4), and the second mounting cylinder (24) is movably sleeved on the outside of the filter cylinder (15). A mud discharge trough (16) is provided on the lower side of the second mounting cylinder (24).
3. The sludge centrifugal dewatering device according to claim 2, characterized in that: A second mounting groove is provided on the lower side of the first mounting cylinder (4). A second mounting plate (5) is fixedly connected to the outer side of the first mounting cylinder (4). A first motor (6) is fixedly connected to the inner side of the second mounting plate (5). A first gear (7) is fixedly connected to the inner output end of the first motor (6). A second gear (8) is toothed below the first gear (7). A screw (19) is fixedly sleeved inside the second gear (8). The screw (19) passes through the second mounting groove, and one end of the screw (19) is movably installed inside the filter cylinder (15).
4. The sludge centrifugal dewatering device according to claim 3, characterized in that: The second mounting cylinder (24) has a third mounting groove on its outer side. One end of the screw (19) passes through the third mounting groove. Two fourth mounting plates (18) are fixedly connected at equal intervals on the outer side of the second mounting cylinder (24). A limiting sleeve (17) is fixedly connected between the two fourth mounting plates (18), and the limiting sleeve (17) is movably sleeved on the outer side of the screw (19).
5. The sludge centrifugal dewatering device according to claim 4, characterized in that: A scraper (23) is fixedly connected to the inner side of the first mounting cylinder (4), and the inner side of the scraper (23) abuts against the filter cylinder (15). A baffle (12) is fixedly connected inside the first mounting cylinder (4), and the baffle (12) is movably sleeved on the outer side of the filter cylinder (15). A drain pipe (9) is fixedly connected to the lower side of the first mounting cylinder (4).
6. The sludge centrifugal dewatering device according to claim 5, characterized in that: The screw (19) has a connecting groove (21) inside and a discharge port (22) on one side.
7. The sludge centrifugal dewatering device according to claim 1, characterized in that: A control panel (2) is fixedly connected to the outside of the mounting base (1), and the control panel (2) is electrically connected to the first motor (6) and the second motor (11).