Flocculation precipitation equipment for sewage treatment

Abstract

The utility model discloses flocculent precipitation equipment for sewage treatment, which relates to the technical field of sewage treatment and particularly comprises a precipitation tank, a sealing cover connected to the top of the precipitation tank, and a first liquid outlet pipe for discharging purified water, a first liquid inlet pipe for transporting sewage and a third liquid inlet pipe for transporting a flocculant which are arranged on the outer wall of the precipitation tank from top to bottom, the bottom of the settling tank is connected with a second liquid inlet pipe for discharging sediments, and the other end of the second liquid inlet pipe is connected with the filter box; the top of the filter box is open and is sealed through a top cover, a filter screen of a box-packed structure is arranged in the sealing top cover, one side of the filter screen of the box-packed structure is open, and the opening is connected with the liquid inlet end of the filter box; a second liquid outlet pipe is arranged on the side, away from the second liquid inlet pipe, of the filter box. The second liquid outlet pipe, the first liquid outlet pipe, the first liquid inlet pipe, the third liquid inlet pipe and the second liquid inlet pipe are all connected with electromagnetic valves. According to the utility model, precipitates can be quickly filtered, and the practicability of the device is also improved at the same time.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a flocculation and sedimentation device for wastewater treatment. Background Technology

[0002] Wastewater refers to water discharged from domestic and industrial processes that has been polluted to a certain extent. Water that has lost its original function is simply called wastewater. It is mainly water used in daily life. It contains a lot of organic matter and is relatively easy to treat. Existing wastewater treatment flocculation sedimentation devices use the method of putting flocculants into the wastewater to be treated for adsorption and discharge.

[0003] However, in existing devices, the settled flocs settle at the bottom of the reactor, but some flocs adhere to the bottom and side walls. After the reaction, it is very inconvenient for staff to clean the remaining flocs at the bottom of the shell, and some floc sediment also flows out with the wastewater, resulting in a large amount of floc sediment mixed in the wastewater discharge. This not only causes inconvenience to the staff but also reduces the practicality of the device. To address this, we propose a flocculation and sedimentation device for wastewater treatment. Utility Model Content

[0004] In response to the shortcomings of existing devices where flocculated material settles at the bottom of the reactor, resulting in a large amount of flocculated sediment mixed in with the wastewater discharge and causing inconvenience to staff, this utility model provides a flocculation sedimentation device for wastewater treatment. This device has the advantages of centralized collection of settled flocculated material and convenient and quick cleaning of sediment by staff, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A flocculation and sedimentation device for wastewater treatment includes a sedimentation tank with a sealing cover connected to the top. The outer wall of the sedimentation tank is provided with a first outlet pipe for discharging clean water, a first inlet pipe for transporting wastewater, and a third inlet pipe for transporting flocculant from top to bottom. The bottom of the sedimentation tank is connected to a second inlet pipe for discharging sediment, and the other end of the second inlet pipe is connected to a filter box.

[0007] The top of the filter box is open and sealed by a top cover. Inside the sealed top cover is a box-type filter screen. One side of the box-type filter screen is open and the opening is connected to the liquid inlet of the filter box.

[0008] A second outlet pipe is installed on the side of the filter box away from the second inlet pipe. Solenoid valves are connected to the second outlet pipe, the first outlet pipe, the first inlet pipe, the third inlet pipe, and the second inlet pipe.

[0009] Optionally, a crossbar extending toward the opening is fixedly connected inside the filter screen, and a filter baffle is slidably connected on the crossbar.

[0010] Optionally, a fixing seat is fixedly connected to the filter plate, and a sleeve is fixedly connected to one side of the fixing seat, which is sleeved on the crossbar.

[0011] Optionally, a handle is attached to the top of the filter.

[0012] Optionally, a connecting shaft is rotatably connected to the sealing cover, with the top of the connecting shaft extending to the top of the sealing cover and connected to a drive motor fastened thereon, and the bottom of the connecting shaft extending into the sedimentation tank.

[0013] Connecting rods are symmetrically connected to the connecting shaft, and scrapers that fit with the bottom of the sedimentation tank are connected to the bottom of the connecting rods.

[0014] Optionally, a filter plate for filtering sediment is connected inside the sedimentation tank, and an annular support is connected inside the sedimentation tank. The filter plate is connected to the top of the annular support, and the filter plate is connected to the connecting shaft through a sealed bearing.

[0015] The filter plate is located above the first and third inlet pipes and below the first outlet pipe.

[0016] Optionally, support legs can be installed at the bottom of the sedimentation tank.

[0017] Compared with the prior art, this utility model can quickly filter sediment through the filter box and the filter screen inside it, and also facilitates the quick cleaning of sediment by the staff. The connecting rod and scraper not only play a stirring role, but also play a role in cleaning sediment. This utility model not only has a simple structure, but also effectively improves the practicality of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of the filter screen of this utility model.

[0021] In the diagram: 1. Sealing cap; 2. Solenoid valve; 3. First inlet pipe; 4. Second inlet pipe; 5. Support leg; 6. Sedimentation tank; 7. Sleeve; 8. Handle; 9. Second outlet pipe; 10. Filter box; 11. Top cover; 12. Annular support; 13. Connecting rod; 14. Scraper; 15. Connecting shaft; 16. Filter plate; 17. First outlet pipe; 18. Drive motor; 19. Filter screen; 20. Crossbar; 21. Filter baffle; 22. Fixing base; 23. Third inlet pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 3 This utility model provides a technical solution: a flocculation and sedimentation device for sewage treatment, including a sedimentation tank 6. In order to improve the overall stability of the sedimentation tank 6, a support leg 5 is provided at the bottom of the sedimentation tank 6. A sealing cover 1 is connected to the top of the sedimentation tank 6. The outer wall of the sedimentation tank 6 is provided with a first liquid outlet pipe 17 for discharging clean water, a first liquid inlet pipe 3 for transporting sewage, and a third liquid inlet pipe 23 for transporting flocculant from top to bottom. A second liquid inlet pipe 4 for discharging sediment is connected to the bottom of the sedimentation tank 6. The other end of the second liquid inlet pipe 4 is connected to a filter box 10.

[0024] like Figure 2 , 3 As shown, the top of the filter box 10 is open and sealed by the top cover 11. A box-shaped filter screen 19 is installed inside the sealed top cover 11. One side of the box-shaped filter screen 19 is open and connected to the liquid inlet of the filter box 10. After sedimentation in the sedimentation tank 6, the wastewater containing sediment is discharged into the filter box 10 through the second liquid inlet pipe 4. The wastewater can filter the sediment through the filter screen 19. Under the filtration and interception of the filter screen 19, not only can the sediment be collected uniformly, but it is also convenient for the staff to remove the sediment collected in the filter screen 19, which further improves the practicality of the device.

[0025] like Figure 2 , 3 As shown, to facilitate the handling of the filter screen 19 by the staff, a handle 8 is connected to the top of the filter screen 19. A horizontal bar 20 extending towards the opening is fixedly connected inside the filter screen 19. A filter baffle 21 is slidably connected to the horizontal bar 20. A fixing seat 22 is fixedly connected to the filter baffle 21. A sleeve 7 is fixedly connected to one side of the fixing seat 22. The sleeve 7 is fitted onto the horizontal bar 20. When cleaning the sediment accumulated inside the filter screen 19, the sleeve 7 is pulled by hand, which causes the filter baffle 21 to slide on the horizontal bar 20, which can quickly clean out the sediment. After cleaning, the filter baffle 21 is pushed into the filter screen 19 so that it fits against the inner wall of the filter screen 19, so that the filter screen 19 can perform normal filtration.

[0026] In summary, the flocculation and sedimentation equipment for wastewater treatment, when in use, has a second outlet pipe 9 installed on the side of the filter box 10 away from the second inlet pipe 4. Solenoid valves 2 are connected to the second outlet pipe 9, the first outlet pipe 17, the first inlet pipe 3, the third inlet pipe 23, and the second inlet pipe 4. In actual use, a control box (not shown in the figure) is installed on the sedimentation tank 6, and the solenoid valves 2 are connected to the controller. Wastewater is discharged into the sedimentation tank 6 through the first inlet pipe 3, and the third inlet pipe 23 transports flocculant. Under the action of the flocculant, the impurities in the wastewater can be precipitated.

[0027] like Figure 1 , 2 To ensure thorough mixing of the flocculant and wastewater, a connecting shaft 15 is rotatably connected to the sealing cover 1. The top of the connecting shaft 15 extends to the top of the sealing cover 1 and is connected to the drive motor 18 fastened thereon. The bottom of the connecting shaft 15 extends into the sedimentation tank 6. Connecting rods 13 are symmetrically connected to the connecting shaft 15. The bottom of the connecting rods 13 is connected to a scraper 14 that is in clearance fit with the bottom surface of the sedimentation tank 6. Under the stirring action of the connecting rods 13 and the scraper 14, the flocculant and wastewater are ensured to react fully. When the sediment is cleaned after settling, the connecting rods 13 and the scraper 14 rotate. This is to clean the impurities accumulated in the sedimentation tank 6, which greatly facilitates the cleaning operation.

[0028] like Figure 2 As shown, in order to prevent wastewater containing impurities from being discharged from the first outlet pipe 17, a filter plate 16 for filtering sediment is connected inside the sedimentation tank 6. An annular support 12 is connected inside the sedimentation tank 6, and the filter plate 16 is connected to the top of the annular support 12. The filter plate 16 is connected to the connecting shaft 15 through a sealed bearing. The filter plate 16 is located above the first inlet pipe 3 and the third inlet pipe 23, and below the first outlet pipe 17.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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. They 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 on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flocculation and sedimentation device for wastewater treatment, comprising a sedimentation tank (6), wherein a sealing cover (1) is connected to the top of the sedimentation tank (6), characterized in that: The outer wall of the sedimentation tank (6) is provided with a first liquid outlet pipe (17) for discharging clean water, a first liquid inlet pipe (3) for transporting sewage and a third liquid inlet pipe (23) for transporting flocculant from top to bottom. The bottom of the sedimentation tank (6) is connected to a second liquid inlet pipe (4) for discharging sediment, and the other end of the second liquid inlet pipe (4) is connected to the filter box (10). The top of the filter box (10) is open and sealed by a top cover (11). A box-type filter screen (19) is provided inside the sealed top cover (11). One side of the box-type filter screen (19) is open and the opening is connected to the liquid inlet of the filter box (10). A second outlet pipe (9) is provided on the side of the filter box (10) away from the second inlet pipe (4). Solenoid valves (2) are connected to the second outlet pipe (9), the first outlet pipe (17), the first inlet pipe (3), the third inlet pipe (23), and the second inlet pipe (4).

2. The flocculation and sedimentation equipment for wastewater treatment according to claim 1, characterized in that: The filter screen (19) has a fixed connection inside a crossbar (20) extending toward the opening, and a filter baffle (21) is slidably connected on the crossbar (20).

3. The flocculation and sedimentation equipment for wastewater treatment according to claim 2, characterized in that: A fixed seat (22) is fixedly connected to the filter plate (21), and a sleeve (7) is fixedly connected to one side of the fixed seat (22). The sleeve (7) is sleeved on the crossbar (20).

4. The flocculation and sedimentation equipment for wastewater treatment according to claim 1, characterized in that: The top of the filter (19) is connected to a handle (8).

5. The flocculation and sedimentation equipment for wastewater treatment according to any one of claims 1-4, characterized in that: A connecting shaft (15) is rotatably connected to the sealing cover (1). The top of the connecting shaft (15) extends to the top of the sealing cover (1) and is connected to the drive motor (18) fastened thereon. The bottom of the connecting shaft (15) extends into the sedimentation tank (6). A connecting rod (13) is symmetrically connected to the connecting shaft (15), and a scraper (14) that is in clearance fit with the bottom surface of the sedimentation tank (6) is connected to the bottom of the connecting rod (13).

6. The flocculation and sedimentation equipment for wastewater treatment according to claim 5, characterized in that: The sedimentation tank (6) is connected to a filter plate (16) for filtering sediment. The sedimentation tank (6) is connected to an annular support (12). The filter plate (16) is connected to the top of the annular support (12). The filter plate (16) is connected to the connecting shaft (15) through a sealed bearing. The filter plate (16) is located above the first inlet pipe (3) and the third inlet pipe (23), and the filter plate (16) is located below the first outlet pipe (17).

7. The flocculation and sedimentation equipment for wastewater treatment according to claim 6, characterized in that: The sedimentation tank (6) is equipped with support legs (5) at the bottom.

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