A solid-liquid separation device for sludge treatment
By combining a spiral conveyor bar and a centrifuge cylinder with a scraper and a gear transmission system driven by a motor, the problem of discontinuous sludge treatment in existing devices has been solved, achieving a highly efficient solid-liquid separation effect for sludge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA NUOCHI ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-06-21
- Publication Date
- 2026-06-02
Smart Images

Figure CN224313404U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sludge treatment technology, and more specifically, to a solid-liquid separation device for sludge treatment. Background Technology
[0002] Sludge treatment is a process of reducing, stabilizing, and rendering harmless sludge by concentrating, conditioning, dewatering, stabilizing, drying, or incinerating it. This process requires the use of separation devices to separate the solid and liquid components of the sludge.
[0003] A search revealed that utility model patent CN222834176U discloses a dewatering device for sludge treatment, comprising a housing; a centrifugal dewatering component fixedly connected inside the housing; a scraper slidably disposed on the inner wall of the dewatering barrel; a collection box movably disposed at the lower end of the centrifugal dewatering component; a squeezing block movably disposed on the inner wall of the collection box; and multiple evenly distributed second leakage holes penetrating through the inner and outer walls of the collection box. This patent utilizes centrifugal force to achieve solid-liquid separation of sludge. The scraper, driven by a first electric cylinder, scrapes off the sludge adhering to the inner wall of the dewatering barrel, preventing blockage. After initial dewatering, the sludge falls into the collection box through an open butterfly valve. A support plate is then pushed to slide the sludge into the housing, and the second electric cylinder is activated to drive the squeezing block to perform a secondary squeezing of the sludge in the collection box, squeezing out residual water and improving the efficiency of sludge dewatering treatment.
[0004] The aforementioned patent also has the following shortcomings: although the collection box can be used to squeeze and dewater the fallen sludge, the sludge in the collection box needs to be processed frequently, which is not convenient for continuous solid-liquid separation of sludge, resulting in poor performance. Therefore, we propose a solid-liquid separation device for sludge treatment. Utility Model Content
[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a solid-liquid separation device for sludge treatment.
[0006] To solve the above problems, the present invention adopts the following technical solution:
[0007] A solid-liquid separation device for sludge treatment includes a separation chamber. A hanging base is fixedly connected to the top of the inner cavity of the separation chamber, and a supporting bend is fixedly sleeved at the bottom end of the hanging base. A conveying pipe is fixedly sleeved on one side of the separation chamber. A feed hopper is provided at the top of one end of the conveying pipe, and the other end of the conveying pipe is fixedly sleeved into the inner cavity of the supporting bend. A plurality of first filter holes are provided on the outer side of the conveying pipe and within the inner cavity of the separation chamber. A first motor is fixedly installed at one end of the conveying pipe, and the output shaft of the first motor extends into the inner cavity of the conveying pipe and is fixedly connected to a first spiral conveying rod via a coupling. A first bearing is fixedly sleeved on the outer side of one end of the supporting bend, and a centrifuge cylinder is fixedly sleeved on the outer side of the first bearing. The bottom end of the centrifuge cylinder is movably sleeved to the outside of the separation box. A support mechanism and a scraping mechanism are provided on the other side of the separation box. Multiple second filter holes are provided on the outer side of the centrifuge cylinder and inside the separation box. A second gear is fixedly sleeved on the outer side of the bottom end of the centrifuge cylinder. A second motor is fixedly installed on the back of the separation box. The output shaft of the second motor is fixedly sleeved with a first gear. The first gear and the second gear mesh with each other.
[0008] As a preferred embodiment of the present invention, the scraping mechanism includes a connecting frame fixedly connected to the other side of the separation box, a scraper fixedly connected to the end of the connecting frame, the end of the scraper extending into the inner cavity of the centrifuge cylinder, and the top surface of the scraper fitting against the inner wall of the centrifuge cylinder.
[0009] As a preferred embodiment of the present invention, the support mechanism includes an outer support cylinder fixedly connected to the other side of the separation box, the centrifuge cylinder passing through the inner cavity of the outer support cylinder, a second bearing fixedly sleeved at one end of the inner cavity of the outer support cylinder, and the inner side of the second bearing fixedly sleeved on the outer side of the centrifuge cylinder.
[0010] As a preferred embodiment of this utility model, a drain valve is fixedly installed on one side of the separation box, and the end of the drain valve is movably sleeved to the bottom of the inner cavity of the separation box.
[0011] In a preferred embodiment of this utility model, the side of the first spiral conveying rod is in contact with the inner wall of the conveying pipe.
[0012] As a preferred embodiment of this utility model, the front of the separation box is provided with a transparent panel.
[0013] Compared with existing technologies, the advantages of this utility model are:
[0014] (1) In this utility model, sludge is fed into the conveying pipe from the feed hopper. The first motor drives the first spiral conveying rod to rotate. The first spiral conveying rod pushes the sludge to move in the inner cavity of the conveying pipe, and the sewage in the sludge falls from the first filter hole into the inner cavity of the separation box. In addition, the sludge in the inner cavity of the conveying pipe is introduced into the inner cavity of the centrifuge tube through the support bend. The centrifuge tube is driven to rotate by the cooperation of the second gear, the second motor and the first gear. The rotation of the centrifuge tube causes the sludge to generate centrifugal force, thereby throwing the sewage in the sludge out from the second filter hole, ensuring the effect and quality of solid-liquid separation of sludge, and realizing continuous solid-liquid separation of sludge.
[0015] (2) In this utility model, by using the connecting frame and the scraper together, the scraper scrapes the inner wall of the centrifuge when the centrifuge is rotating, thereby scraping off the sludge attached to the inner wall of the centrifuge, ensuring that the sludge falls smoothly from the centrifuge, and thus ensuring that the device can continuously perform solid-liquid separation of sludge. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the centrifuge tube of this utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the separation box of this utility model;
[0019] Figure 4 This is a schematic cross-sectional view of the present invention.
[0020] Explanation of the labels in the diagram:
[0021] 1. Separation box; 2. Hanging base; 3. Support bend; 4. Conveying pipe; 5. Feed hopper; 6. First filter hole; 7. First motor; 8. First screw conveyor rod; 9. First bearing; 10. Centrifuge cylinder; 11. Second filter hole; 12. Second gear; 13. Second motor; 14. First gear; 15. Support mechanism; 16. Scraping mechanism; 17. Connecting frame; 18. Scraper; 19. Outer support cylinder; 20. Second bearing; 21. Drain valve; 22. Perspective plate. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] Example 1:
[0026] Please see Figure 1-4 A solid-liquid separation device for sludge treatment includes a separation box 1. A hanging base 2 is fixedly connected to the top of the inner cavity of the separation box 1. A supporting bend 3 is fixedly sleeved at the bottom end of the hanging base 2. A conveying pipe 4 is fixedly sleeved on one side of the separation box 1. A feed hopper 5 is provided at the top of one end of the conveying pipe 4. The other end of the conveying pipe 4 is fixedly sleeved into the inner cavity of the supporting bend 3. A plurality of first filter holes 6 are provided on the outside of the conveying pipe 4 and inside the separation box 1. A first motor 7 is fixedly installed at one end of the conveying pipe 4. The output shaft of the first motor 7 extends into the inner cavity of the conveying pipe 4 and is fixedly connected to a first spiral conveying rod 8 through a coupling. The supporting bend 3... A first bearing 9 is fixedly sleeved on the outer side of one end of the centrifuge 10, and a centrifuge cylinder 10 is fixedly sleeved on the outer side of the first bearing 9. The bottom end of the centrifuge cylinder 10 is movably sleeved to the outside of the separation box 1. A support mechanism 15 is provided on the other side of the separation box 1, and a scraping mechanism 16 is provided on the other side of the separation box 1. Multiple second filter holes 11 are provided on the outer side of the centrifuge cylinder 10 and inside the separation box 1. A second gear 12 is fixedly sleeved on the outer side of the bottom end of the centrifuge cylinder 10. A second motor 13 is fixedly installed on the back of the separation box 1. A first gear 14 is fixedly sleeved on the output shaft of the second motor 13. The first gear 14 and the second gear 12 mesh with each other.
[0027] In this embodiment, the device is controlled by a controller on the outside of the separation box 1, and the device is powered by the power supply of the external device. This is existing technology and will not be described in detail.
[0028] For details, please refer to Figures 1 to 4 The scraping mechanism 16 includes a connecting frame 17 fixedly connected to the other side of the separation box 1. A scraper 18 is fixedly connected to the end of the connecting frame 17. The end of the scraper 18 extends into the inner cavity of the centrifuge cylinder 10. The top surface of the scraper 18 is in contact with the inner wall of the centrifuge cylinder 10.
[0029] In this embodiment, the scraper 18 is used to scrape the sludge adhering to the inner wall of the centrifuge cylinder 10 to prevent the sludge from adhering to the inner wall of the centrifuge cylinder 10.
[0030] For details, please refer to Figure 1 and Figure 4 The support mechanism 15 includes an outer support cylinder 19 fixedly connected to the other side of the separation box 1. The centrifuge cylinder 10 passes through the inner cavity of the outer support cylinder 19. A second bearing 20 is fixedly sleeved at one end of the inner cavity of the outer support cylinder 19. The inner side of the second bearing 20 is fixedly sleeved on the outer side of the centrifuge cylinder 10.
[0031] In this embodiment, the centrifuge cylinder 10 is supported by the outer support cylinder 19 and the second bearing 20 to ensure the stability and firmness of the centrifuge cylinder 10.
[0032] For details, please refer to Figure 3 A drain valve 21 is fixedly installed on one side of the separation box 1, and the end of the drain valve 21 is movably sleeved to the bottom of the inner cavity of the separation box 1.
[0033] In this embodiment, the sewage at the bottom of the inner cavity of the separation box 1 is discharged through the drain valve 21.
[0034] For details, please refer to Figure 4 The side of the first spiral conveyor rod 8 is in contact with the inner wall of the conveying pipe 4.
[0035] In this embodiment, the first spiral conveying rod 8 is designed to push the sludge to move smoothly within the inner cavity of the conveying pipe 4.
[0036] For details, please refer to Figure 1 The front of the separation box 1 is provided with a transparent panel 22.
[0037] In this embodiment, the amount of sewage at the bottom of the inner cavity of the separation box 1 is controlled through the transparent plate 22.
[0038] Working principle: In use, sludge is first fed into the inner cavity of the conveying pipe 4 through the feed hopper 5. The first motor 7 is started to drive the first spiral conveyor 8 to rotate, which moves the sludge forward. At the same time, the wastewater in the sludge falls through the first filter hole 6 to the bottom of the inner cavity of the separation box 1. Then, the sludge in the inner cavity of the conveying pipe 4 enters the support bend 3 from its end, and then enters the centrifuge cylinder 10. Then, the second motor 13 is started to drive the first gear 14 to rotate, which in turn moves the sludge through the first gear 14 and the second gear... The meshing drive of wheel 12 drives the centrifuge cylinder 10 to rotate. The rotation of the centrifuge cylinder 10 causes the sludge inside the centrifuge cylinder 10 to rotate. The centrifugal force generated by the rotation of the centrifuge cylinder 10 causes the wastewater in the sludge to fall through the second filter hole 11 into the inner cavity of the separation box 1. Finally, the sludge inside the centrifuge cylinder 10 moves downward under its own weight. At the same time, the scraper 18 scrapes the inner wall of the centrifuge cylinder 10, thereby scraping off the sludge attached to the inner wall of the centrifuge cylinder 10, ensuring that the sludge falls off smoothly.
[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.
Claims
1. A solid-liquid separation device for sludge treatment, comprising a separation tank (1), characterized in that: A hanging base (2) is fixedly connected to the top of the inner cavity of the separation box (1). A supporting bend (3) is fixedly sleeved at the bottom end of the hanging base (2). A conveying pipe (4) is fixedly sleeved on one side of the separation box (1). A feed hopper (5) is provided at the top of one end of the conveying pipe (4). The other end of the conveying pipe (4) is fixedly sleeved to the inner cavity of the supporting bend (3). A plurality of first filter holes (6) are provided on the outside of the conveying pipe (4) and in the inner cavity of the separation box (1). A first motor (7) is fixedly installed at one end of the conveying pipe (4). The output shaft of the first motor (7) extends into the inner cavity of the conveying pipe (4) and is fixedly connected to a first spiral conveying rod (8) through a coupling. A first spiral conveying rod (8) is fixedly sleeved on the outside of one end of the supporting bend (3). The first bearing (9) has a centrifuge cylinder (10) fixedly sleeved on its outer side. The bottom end of the centrifuge cylinder (10) is movably sleeved to the outside of the separation box (1). A support mechanism (15) is provided on the other side of the separation box (1). A scraping mechanism (16) is provided on the other side of the separation box (1). A plurality of second filter holes (11) are provided on the outer side of the centrifuge cylinder (10) and in the inner cavity of the separation box (1). A second gear (12) is fixedly sleeved on the outer side of the bottom end of the centrifuge cylinder (10). A second motor (13) is fixedly installed on the back of the separation box (1). A first gear (14) is fixedly sleeved on the output shaft of the second motor (13). The first gear (14) and the second gear (12) mesh with each other.
2. The solid-liquid separation device for sludge treatment according to claim 1, characterized in that: The scraping mechanism (16) includes a connecting frame (17) fixedly connected to the other side of the separation box (1). A scraper (18) is fixedly connected to the end of the connecting frame (17). The end of the scraper (18) extends into the inner cavity of the centrifuge cylinder (10). The top surface of the scraper (18) is in contact with the inner wall of the centrifuge cylinder (10).
3. A solid-liquid separation device for sludge treatment according to claim 1, characterized in that: The support mechanism (15) includes an outer support cylinder (19) fixedly connected to the other side of the separation box (1). The centrifuge cylinder (10) penetrates the inner cavity of the outer support cylinder (19). A second bearing (20) is fixedly sleeved at one end of the inner cavity of the outer support cylinder (19). The inner side of the second bearing (20) is fixedly sleeved on the outer side of the centrifuge cylinder (10).
4. A solid-liquid separation device for sludge treatment according to claim 1, characterized in that: A drain valve (21) is fixedly installed on one side of the separation box (1), and the end of the drain valve (21) is movably sleeved to the bottom of the inner cavity of the separation box (1).
5. A solid-liquid separation device for sludge treatment according to claim 1, characterized in that: The side of the first spiral conveyor rod (8) is in contact with the inner wall of the conveying pipe (4).
6. A solid-liquid separation device for sludge treatment according to claim 1, characterized in that: The front of the separation box (1) is provided with a transparent panel (22).