Multistage precipitation sewage treatment equipment

Abstract

The utility model discloses multi-stage precipitation sewage treatment equipment which comprises a sewage pipe, a first precipitation tank is arranged on one side of the sewage pipe, a second precipitation tank is arranged on one side of the first precipitation tank, a third precipitation tank is arranged on one side of the second precipitation tank, a rotating rod is rotatably mounted in the second precipitation tank, and a plurality of precipitation tanks are arranged in the rotating rod. A spiral blade is fixedly mounted in the middle of the outer side of the rotating rod, a mixing blade is fixedly mounted below the outer side of the rotating rod, a cylinder is arranged on the outer side of the spiral blade, the upper end of the cylinder is fixedly connected with the second settling tank, and side notches are symmetrically and fixedly formed in the upper portions of the two sides of the cylinder correspondingly; a feeding pipe is fixedly mounted above the settling tank II, and the lower end of the feeding pipe extends into the settling tank II and is fixedly provided with a flow guide pipe. The sewage treatment device has the advantages that the auxiliary mixing capability is realized, and the practicability is improved, so that the problem that the precipitation efficiency is influenced due to the fact that a flocculating agent cannot be quickly and sufficiently combined with sewage when the sewage is flocculated and precipitated is solved.

Description

Technical Field

[0001] This utility model relates to the field of treatment equipment technology, specifically a multi-stage sedimentation wastewater treatment device. Background Technology

[0002] Multi-stage sedimentation wastewater treatment equipment is a wastewater treatment device that uses the principle of gravity sedimentation to separate and remove suspended solids, silt, organic matter and other impurities in wastewater through multi-stage sedimentation tanks. It is widely used in industrial wastewater treatment, urban sewage treatment, rural domestic sewage treatment and other fields.

[0003] For example, the authorized patent with announcement number CN217312105U (a multi-stage sedimentation device for industrial wastewater treatment) includes a primary tank, a secondary tank and a tertiary tank. A first-stage pipe is fixedly connected between the primary tank and the secondary tank, and a second-stage pipe is fixedly connected between the secondary tank and the tertiary tank. An intermediate plate is fixedly sleeved on the inner surface of both the first-stage pipe and the second-stage pipe, and a through hole is opened on the side of the intermediate plate.

[0004] While the aforementioned existing technologies ensure the flow of wastewater during actual wastewater treatment, they lack an auxiliary mixing structure. Consequently, during flocculation and sedimentation, the flocculant cannot quickly and fully combine with the wastewater, affecting sedimentation efficiency. Therefore, there is an urgent market need to develop a multi-stage sedimentation wastewater treatment device to help solve existing problems. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage sedimentation wastewater treatment device to solve the problem mentioned in the background art where the flocculant cannot quickly and fully combine with the wastewater during flocculation and sedimentation, thus affecting the sedimentation efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage sedimentation wastewater treatment device, comprising a wastewater pipe, a sedimentation tank 1 disposed on one side of the wastewater pipe, a sedimentation tank 2 disposed on one side of the sedimentation tank 1, and a sedimentation tank 3 disposed on one side of the sedimentation tank 2. A rotating rod is rotatably installed inside the sedimentation tank 2, a spiral blade is fixedly installed in the middle of the outer side of the rotating rod, a mixing blade is fixedly installed below the outer side of the rotating rod, a cylinder is disposed outside the spiral blade, the upper end of the cylinder is fixedly connected to the sedimentation tank 2, side slots are symmetrically fixedly installed on the upper sides of the cylinder, a feeding pipe is fixedly installed on the upper side of the sedimentation tank 2, the lower end of the feeding pipe extends into the interior of the sedimentation tank 2 and a guide pipe is fixedly installed thereon, one end of the guide pipe extends into the interior of the cylinder through the side slot.

[0007] Preferably, a dispersion block is fixedly installed on the upper end of the outer side of the rotating rod. The dispersion block is located below the lower end of the guide tube. An annular cavity is provided inside the dispersion block. Multiple dispersion holes are provided inside the dispersion block along the lower part of the annular cavity. The multiple dispersion holes are arranged in a ring at intervals.

[0008] Preferably, the internal structures of sedimentation tank 1 and sedimentation tank 3 are the same, a filter screen 1 is fixedly installed on one side of the interior of sedimentation tank 1, and a filter screen 2 is fixedly installed on one side of the interior of sedimentation tank 2.

[0009] Preferably, a connecting valve is fixedly installed on one side of the sedimentation tank one along one side of the filter screen one and on one side of the sedimentation tank two along one side of the filter screen two, and an output valve is fixedly installed on one side of the sedimentation tank three.

[0010] Preferably, an electric cylinder is fixedly installed on one side above each of the sedimentation tank 1, sedimentation tank 2, and sedimentation tank 3, and a transmission plate is provided on one side inside each of the sedimentation tank 1, sedimentation tank 2, and sedimentation tank 3. The push rod end of the electric cylinder is fixedly connected to the transmission plate, and an mounting plate is fixedly installed below the transmission plate. A scraper is fixedly installed on one side below the mounting plate.

[0011] Preferably, a bottom block is fixedly installed at the bottom of each of the sedimentation tanks 1, 2, and 3, and a conical groove is provided inside the bottom block. A drain valve is fixedly installed at the bottom of each of the sedimentation tanks 1, 2, and 3, and the drain valve is connected to the conical groove of the bottom block. A drain pipe is fixedly installed below the drain valve.

[0012] Preferably, a support plate is fixedly installed below each of the sedimentation tank 1, sedimentation tank 2 and sedimentation tank 3, and a base plate is fixedly installed below the support plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model improves the flocculation and sedimentation efficiency by setting an auxiliary mixing structure in the sedimentation tank II, which consists of a rotating rod, a spiral blade, a mixing blade, and a guide pipe working together. When the sewage enters the sedimentation tank II, the flocculant injected by the feeding pipe is introduced into the cylinder through the side slot through the guide pipe. At this time, the rotating rod drives the spiral blade and the mixing blade to rotate at high speed. The spiral blade can drive the sewage to form an upward circulating flow, while the mixing blade directly stirs the sewage. The two work together to greatly enhance the degree of disturbance of the sewage in the sedimentation tank II, so that the flocculant can be quickly and fully mixed with the sewage, thereby improving the flocculation and sedimentation efficiency and shortening the sedimentation time.

[0015] (2) The present invention uses a dispersion block located below the lower end of the guide pipe, with an annular cavity and multiple dispersion holes arranged in annular intervals inside, so that the flocculant flowing out of the guide pipe can be dispersed into the sewage through the dispersion holes, avoiding excessive concentration of flocculant in local areas, and enabling the flocculant to contact the suspended particles in the sewage more effectively, thereby improving the efficiency of subsequent sedimentation and separation.

[0016] (3) By installing an electric cylinder, transmission plate, mounting plate and scraper on sedimentation tank 1, sedimentation tank 2 and sedimentation tank 3, the present invention can scrape the surface of the filter screen in different sedimentation tanks to remove the adhering substances on the surface of the filter screen, which is conducive to the long-term stable operation of the sedimentation tank and increases its practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a multi-stage sedimentation wastewater treatment device according to the present invention;

[0018] Figure 2 This is a cross-sectional view of the sedimentation tank of this utility model;

[0019] Figure 3 This is a cross-sectional view of the sedimentation tank II of this utility model;

[0020] Figure 4 This is an enlarged schematic diagram of part A of this utility model.

[0021] In the diagram: 1. Sewage pipe; 2. Sedimentation tank one; 3. Sedimentation tank two; 4. Sedimentation tank three; 5. Support plate; 6. Base plate; 7. Drain valve; 8. Drain pipe; 9. Connecting valve; 10. Output valve; 11. Bottom block; 1101. Conical groove; 12. Filter screen one; 13. Electric cylinder; 14. Transmission plate; 15. Mounting plate; 16. Scraper; 17. Filter screen two; 18. Rotating rod; 19. Spiral blade; 20. Cylinder; 2001. Side slot; 21. Mixing blade; 22. Feeding pipe; 23. Guide pipe; 24. Dispersion block; 2401. Annular cavity; 2402. Dispersion hole. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4An embodiment of this utility model provides a multi-stage sedimentation wastewater treatment device, including a wastewater pipe 1, a sedimentation tank 2 on one side of the wastewater pipe 1, a sedimentation tank 3 on one side of the sedimentation tank 2, and a sedimentation tank 4 on one side of the sedimentation tank 3. A rotating rod 18 is rotatably installed inside the sedimentation tank 3. A spiral blade 19 is fixedly installed in the middle of the outer side of the rotating rod 18. A mixing blade 21 is fixedly installed below the outer side of the rotating rod 18. A cylinder 20 is provided outside the spiral blade 19. The upper end of the cylinder 20 is fixedly connected to the sedimentation tank 3. Side slots 2001 are symmetrically fixedly installed on the upper sides of the cylinder 20. A feeding pipe 22 is fixedly installed on the upper side of the sedimentation tank 3. The lower end of the feeding pipe 22 extends into the interior of the sedimentation tank 3 and a guide pipe 23 is fixedly installed. One end of the guide pipe 23 extends into the interior of the cylinder 20 through the side slot 2001.

[0024] In sedimentation tank 23, the rotating rod 18 is rotated, and the spiral blades 19 rotate inside the cylinder 20, which can drive the sewage to form an upward circulating flow. Meanwhile, the mixing blades 21 directly stir the sewage. The two work together to greatly enhance the turbulence of the sewage in sedimentation tank 23. At the same time, the flocculant can be easily introduced into the cylinder 20 through the feed pipe 22 via the guide pipe 23 and the side slot 2001, so that the flocculant can directly enter the sewage turbulence area and quickly mix with the sewage. This greatly improves the efficiency of flocculation and sedimentation, shortens the sedimentation time, and increases practicality.

[0025] Please see Figure 3 and Figure 4 A dispersion block 24 is fixedly installed on the upper end of the outer side of the rotating rod 18. The dispersion block 24 is located below the lower end of the guide tube 23. An annular cavity 2401 is provided inside the dispersion block 24. Multiple dispersion holes 2402 are provided inside the dispersion block 24 along the lower part of the annular cavity 2401. The multiple dispersion holes 2402 are arranged in a ring at intervals.

[0026] This allows the flocculant flowing out of the guide pipe 23 to first enter the annular cavity 2401, and then disperse into the wastewater through the dispersion hole 2402. This avoids excessive concentration of flocculant in local areas, ensures uniform distribution of flocculant in wastewater, and enables flocculant to contact suspended particles in wastewater more effectively, thereby improving the efficiency of subsequent sedimentation and separation.

[0027] Please see Figure 1 , Figure 2 and Figure 3The internal structures of sedimentation tank 1-2 and sedimentation tank 3-4 are the same. Filter screen 12 is fixedly installed on one side inside sedimentation tank 1-2. The mesh diameter of filter screen 12 in sedimentation tank 1-2 is larger than that of filter screen 12 in sedimentation tank 3-4. Filter screen 12 in sedimentation tank 1-2 is used to remove large suspended particles. Filter screen 12 in sedimentation tank 3-4 is used to separate fine particles. Filter screen 2-17 is fixedly installed on one side inside sedimentation tank 2-3. Filter screen 2-17 is used to remove colloids and fine particles.

[0028] The filter screen effectively intercepts particulate impurities in the wastewater, preventing them from entering the subsequent sedimentation stage. This allows the three sedimentation tanks to form a multi-stage sedimentation process, reducing the burden on individual sedimentation tanks and improving sedimentation efficiency.

[0029] Please see Figure 1 , Figure 2 and Figure 3 A connecting valve 9 is fixedly installed on one side of sedimentation tank 12 along one side of filter screen 12 and on one side of sedimentation tank 23 along one side of filter screen 27. An output valve 10 is fixedly installed on one side of sedimentation tank 34.

[0030] The connecting valve 9 allows sewage to flow from sedimentation tank 1 (2) into sedimentation tank 2 (3) and from sedimentation tank 2 (3) into sedimentation tank 3 (4), and facilitates flexible adjustment of the sewage flow direction and flow rate, increasing its practicality.

[0031] Please see Figure 1 , Figure 2 and Figure 3 An electric cylinder 13 is fixedly installed on one side above the sedimentation tank 1, sedimentation tank 2, sedimentation tank 3, and sedimentation tank 3. A transmission plate 14 is provided on one side inside the sedimentation tank 1, sedimentation tank 2, sedimentation tank 2, and sedimentation tank 3. The push rod end of the electric cylinder 13 is fixedly connected to the transmission plate 14. An installation plate 15 is fixedly installed below the transmission plate 14. A scraper 16 is fixedly installed on one side below the installation plate 15.

[0032] The push rod end of the electric cylinder 13 is fixedly connected to the transmission plate 14, which can drive the transmission plate 14 to move up and down, thereby driving the scraper 16 below the mounting plate 15 to move up and down in the sedimentation tank. This can scrape the surface of the filter screen in different sedimentation tanks, remove the adhering substances on the surface of the filter screen, and help the sedimentation tank to operate stably for a long time.

[0033] Please see Figure 1 , Figure 2 and Figure 3A base block 11 is fixedly installed at the bottom of each of the sedimentation tanks 1-2, 2-3, and 3-4. The bottom block 11 has a conical groove 1101 inside. A drain valve 7 is fixedly installed at the bottom of each of the sedimentation tanks 1-2, 2-3, and 3-4. The drain valve 7 is connected to the conical groove 1101 of the bottom block 11. A drain pipe 8 is fixedly installed below the drain valve 7.

[0034] The conical groove 1101 inside the bottom block 11 allows the sludge settled at the bottom of the sedimentation tank to naturally collect at the bottom of the conical groove 1101, facilitating centralized discharge. The drain valve 7 is connected to the conical groove 1101 of the bottom block 11. By opening and closing the drain valve 7, the sludge can be easily discharged from the sedimentation tank, increasing its practicality.

[0035] Please see Figure 1 A support plate 5 is fixedly installed below each of the sedimentation tanks 1 (2), 2 (3), and 3 (4), and a base plate 6 is fixedly installed below the support plate 5.

[0036] The support plate 5 provides stable support for the sedimentation tank, ensuring its stability and safety during operation. At the same time, the structural design of the support plate 5 and the base plate 6 facilitates the installation and fixing of the equipment, allowing it to be firmly placed on the ground.

[0037] Working principle: During use, sewage enters sedimentation tank 2 through sewage pipe 1 for sedimentation. After the first sedimentation, large suspended particles are removed by filter screen 12 and flow into sedimentation tank 3 through connecting valve 9. In sedimentation tank 3, the rotating rod 18 rotates, and the spiral blade 19 on its outer middle rotates in the cylinder 20, causing the sewage to rise and circulate. The mixing blade 21 below directly stirs the sewage. The two work together to enhance the sewage turbulence. At the same time, the feeding pipe 22 introduces flocculant into the cylinder 20 through the guide pipe 23 and the side slot 2001, and it falls into the annular cavity 2401 of the dispersion block 24. Then it is dispersed into the sewage through the dispersion hole 2402, and quickly mixes with the sewage to form larger flocs. After the second sedimentation, colloids and fine particles are filtered by filter screen 27 and flow into sedimentation tank 4 through connecting valve 9 for sedimentation. After sedimentation, the sewage is discharged by filtering fine particles through filter screen 12 and discharged through the output valve 10, thus realizing multi-stage sedimentation and filtration of sewage and increasing its practicality.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-stage sedimentation wastewater treatment device, comprising a wastewater pipe (1), characterized in that: A sedimentation tank 1 (2) is provided on one side of the sewage pipe (1), a sedimentation tank 2 (3) is provided on one side of the sedimentation tank 1 (2), and a sedimentation tank 3 (4) is provided on one side of the sedimentation tank 2 (3). A rotating rod (18) is rotatably installed inside the sedimentation tank 2 (3). A spiral blade (19) is fixedly installed in the middle of the outer side of the rotating rod (18). A mixing blade (21) is fixedly installed below the outer side of the rotating rod (18). A cylinder (20) is provided outside the spiral blade (19). The upper end of the cylinder (20) is fixedly connected to the sedimentation tank 2 (3). Side slots (2001) are symmetrically fixedly installed on the upper sides of the cylinder (20). A feeding pipe (22) is fixedly installed on the upper side of the sedimentation tank 2 (3). The lower end of the feeding pipe (22) extends into the interior of the sedimentation tank 2 (3) and a guide pipe (23) is fixedly installed. One end of the guide pipe (23) extends into the interior of the cylinder (20) through the side slot (2001).

2. The multi-stage sedimentation wastewater treatment equipment according to claim 1, characterized in that: A dispersion block (24) is fixedly installed on the upper end of the outer side of the rotating rod (18). The dispersion block (24) is located below the lower end of the guide tube (23). An annular cavity (2401) is provided inside the dispersion block (24). Multiple dispersion holes (2402) are provided inside the dispersion block (24) along the lower part of the annular cavity (2401). The multiple dispersion holes (2402) are arranged in a ring at intervals.

3. The multi-stage sedimentation wastewater treatment equipment according to claim 1, characterized in that: The sedimentation tank 1 (2) and sedimentation tank 3 (4) have the same internal structure. A filter screen 1 (12) is fixedly installed on one side of the interior of sedimentation tank 1 (2), and a filter screen 2 (17) is fixedly installed on one side of the interior of sedimentation tank 2 (3).

4. The multi-stage sedimentation wastewater treatment equipment according to claim 3, characterized in that: A connecting valve (9) is fixedly installed on one side of the sedimentation tank 1 (2) along one side of the filter screen 1 (12) and on one side of the sedimentation tank 2 (3) along one side of the filter screen 2 (17). An output valve (10) is fixedly installed on one side of the sedimentation tank 3 (4).

5. A multi-stage sedimentation wastewater treatment device according to claim 1, characterized in that: An electric cylinder (13) is fixedly installed on one side above the sedimentation tank 1 (2), sedimentation tank 2 (3) and sedimentation tank 3 (4). A transmission plate (14) is provided on one side inside the sedimentation tank 1 (2), sedimentation tank 2 (3) and sedimentation tank 3 (4). The push rod end of the electric cylinder (13) is fixedly connected to the transmission plate (14). An installation plate (15) is fixedly installed below the transmission plate (14). A scraper (16) is fixedly installed on one side below the installation plate (15).

6. The multi-stage sedimentation wastewater treatment equipment according to claim 1, characterized in that: Bottom blocks (11) are fixedly installed inside the sedimentation tank 1 (2), sedimentation tank 2 (3) and sedimentation tank 3 (4). The bottom blocks (11) have conical grooves (1101) inside. Drain valves (7) are fixedly installed below the sedimentation tank 1 (2), sedimentation tank 2 (3) and sedimentation tank 3 (4). The drain valves (7) are connected to the conical grooves (1101) of the bottom blocks (11). Drain pipes (8) are fixedly installed below the drain valves (7).

7. A multi-stage sedimentation wastewater treatment device according to claim 1, characterized in that: A support plate (5) is fixedly installed below each of the sedimentation tanks 1 (2), 2 (3) and 3 (4), and a base plate (6) is fixedly installed below the support plate (5).

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