Unpowered high-density precipitation device

Abstract

The utility model relates to the technical field of sewage treatment, and provides an unpowered high-density precipitation device which comprises a main body, a water inlet pipe and a water outlet pipe, a sludge multiplication center cylinder; the central lifting area is located in the sludge multiplication central cylinder, and a gap is reserved between the central lifting area and the cylinder wall of the sludge multiplication central cylinder to form a water return port; the density multiplication area is located in the sludge multiplication center cylinder and arranged in the circumferential direction of the center lifting area, and the density multiplication area comprises a first annular channel, an ascending channel, an inner ring descending area and a second annular channel which are sequentially arranged in the flowing direction of the water body. According to the unpowered high-density precipitation device provided by the utility model, a water body is subjected to high-speed circulation in the ascending channel in the density multiplication area and the inner ring descending area, so that the collision between flocs and the collision between medicaments and colloids are more frequent, the volume and the density of the flocs are increased, and the precipitation efficiency is improved. A high density floc for forming a floc suspended bed may be provided to the rear-stage precipitation separation zone.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an unpowered high-density sedimentation device. Background Art

[0002] Energy sources in sewage treatment include electricity, heat, chemicals, clean water, etc., of which electricity consumption accounts for 60%-90%. Energy saving and consumption reduction, and reducing the addition of chemicals are carbon emission reduction. In the sewage treatment process, the preparation of high-density flocs can improve the purification effect of water quality. However, the existing sewage treatment equipment uses coagulation, flocculation and sludge return to obtain high-density sludge flocs, especially sludge return needs to be completed with the help of power equipment, which consumes a lot of energy. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is that the existing sewage treatment device uses coagulation, flocculation and sludge return to obtain high-density sludge flocs, especially sludge return needs to be completed with the help of electrical equipment, which has high energy consumption, so a non-powered high-density sedimentation device is provided.

[0004] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0005] The utility model provides a non-powered high-density sedimentation device, comprising: a main body; a sludge multiplication center cylinder, which is arranged in the sludge multiplication center cylinder, and the space between the sludge multiplication center cylinder and the sludge multiplication center cylinder forms a sedimentation separation zone; a central lifting zone, which is located in the sludge multiplication center cylinder, and a gap is left between the central lifting zone and the cylinder wall of the sludge multiplication center cylinder to form a water return port, and the water inlet of the central lifting zone is connected to an external water source; a density multiplication zone, which is located in the sludge multiplication center cylinder and is arranged along the circumference of the central lifting zone The density multiplication zone includes a first annular channel, an ascending channel, an inner ring descending zone and a second annular channel arranged in sequence along the flow direction of the water body; the water inlet of the first annular channel is connected to the water outlet of the central lifting zone, and the second annular channel and the first annular channel converge at the entrance of the ascending channel; the annular water collection zone is located in the sludge multiplication central tube and the sludge multiplication central tube is arranged along the circumference of the central lifting zone; the water outlet of the inner ring descending zone is divided into a first branch and a second branch, wherein the first branch is connected to the The water inlet of the annular water collection zone is connected, and the second branch is connected to the water inlet of the second annular channel; the water inlet of the sedimentation and separation zone is connected to the water outlet of the annular water collection zone, and the water outlet of the sedimentation and separation zone is connected to the outside of the main body; the water flowing out through the water outlet of the central lifting zone enters the first annular channel, flows out through the first annular channel, enters the ascending channel to rise, and further enters the inner ring descending zone to descend, and further flows out through the water outlet of the inner ring descending zone to form the first branch and the second branch, the water flowing out through the second branch enters the second annular channel, and further merges with the water flowing out of the first annular channel and enters the ascending channel; the high-density flocs formed in the process of water mixing are carried by the water into the annular water collection zone, and enter the sedimentation and separation zone through the annular water collection zone, and the high-density flocs form a floc suspension bed in the sedimentation and separation zone to purify the water passing through; a number of guide plates are arranged at intervals along the fluid direction of the water body in the inner ring descending zone.

[0006] Furthermore, a reflective plate is provided at the water outlet of the inner ring downward zone to guide the water body to flow toward the water inlet of the second annular channel, so that the water body changes from flowing downward to flowing upward.

[0007] Furthermore, the unpowered high-density sedimentation device also includes an external descending zone and a diversion zone; the external descending zone is located in the sludge multiplication center cylinder and is arranged along the circumference of the density multiplication zone, and the water inlet of the external descending zone is connected with the water outlet of the central lifting zone; the diversion zone is located in the sludge multiplication center cylinder and is arranged along the circumference of the density multiplication zone, and the water inlet of the diversion zone is connected with the water outlet of the external descending zone; the water outlet of the diversion zone is divided into a third branch and a fourth branch, the third branch is connected with the water inlet of the first annular channel, and the fourth branch is connected with the return water port.

[0008] Furthermore, the water outlet surface of the water outlet of the diversion area adapted to the first annular channel gradually decreases.

[0009] Furthermore, the water outlet surface of the water outlet in the outer descending zone gradually decreases.

[0010] Furthermore, the unpowered high-density sedimentation device also includes a nozzle and a water inlet pipe; the nozzle is arranged in the central lifting area; one end of the water inlet pipe is connected to the nozzle, and the other end is suitable for connecting to a water source outside the main body, and the nozzle accelerates the water and sends it into the central lifting area.

[0011] Furthermore, the unpowered high-density precipitation device also includes an exhaust pipe, one end of which is connected to the intersection of the ascending channel and the inner ring descending zone, and the other end of which is connected to the central lifting zone.

[0012] Furthermore, the unpowered high-density sedimentation device also includes an annular water distribution bin, which is arranged on the outside of the sludge multiplication center tube and distributed along the circumference of the diversion area, the water inlet of the annular water distribution bin is connected to the water outlet of the annular water collecting area, and the water outlet of the annular water distribution bin is connected to the sedimentation and separation area.

[0013] Furthermore, the unpowered high-density sedimentation device also includes a first annular partition plate, which is arranged in the main body, the bottom of the first annular partition plate is connected to the outer wall of the nozzle, and the top of the first annular partition plate extends to the sedimentation and separation zone; the space between the outer wall of the first annular partition plate and the inner wall of the main body forms a mature sludge flow channel; the bottom of the main body is a conical bottom to form a mature sludge collecting bucket, and the mature sludge in the sedimentation and separation zone enters the mature sludge collecting bucket through the mature sludge flow channel.

[0014] Furthermore, the unpowered high-density sedimentation device also includes a second annular partition plate, which is arranged in the main body and located on the inner side of the first annular partition plate, one end of the second annular partition plate extends into the central lifting area through the return water port, and the other end extends toward the sedimentation and separation area; the space between the outer wall of the second annular partition plate and the inner wall of the first annular partition plate forms a semi-mature sludge flow channel, and the semi-mature sludge in the sedimentation and separation area enters the central lifting area through the semi-mature sludge flow channel.

[0015] The technical solution of the utility model has the following advantages:

[0016] The non-powered high-density sedimentation device provided by the utility model sets a density multiplication zone between the central lifting zone and the annular water collection zone along the flow path of the water body, so that the water body circulates at high speed in the two channels of the ascending channel in the density multiplication zone and the inner ring descending zone, so that the collision between flocs and the collision between the reagent and the colloid are more frequent, which promotes the volume and density of the flocs and can provide high-density flocs for the sedimentation and separation zone in the rear section for forming a floc suspension bed. Moreover, high-density floc sludge can be obtained under the premise of omitting the conventional sludge return process, and there is no need to lead the sludge in the rear section back through the pipeline. It is easy to install and saves the power consumption of the pipe return, making the process more energy-efficient than before. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of an unpowered high-density precipitation device in an embodiment of the utility model;

[0019] Figure 2 for Figure 1 A partial enlarged schematic diagram of

[0020] Figure 3 It is a schematic diagram of a water outlet plate in an unpowered high-density sedimentation device in an embodiment of the utility model.

[0021] 1. Main body; 2. Sludge multiplication center tube; 3. Sedimentation and separation area; 4. Central lifting area; 5. Water return port; 6. First annular channel; 7. Ascending channel; 8. Inner ring descending area; 9. Second annular channel; 10. Annular water collection area; 11. Guide plate; 12. Reflector; 13. External descending area; 14. Diversion area; 15. Spray pipe; 16. Water inlet pipe; 17. Exhaust pipe; 18. Annular plate; 19. Guide cover ; 20. Central riser; 21. First annular partition plate; 22. Second annular partition plate; 23. Annular water distribution bin; 24. Collecting pipe; 25. Mature sludge flow channel; 26. Semi-mature sludge flow channel; 27. Mature sludge collecting bucket; 28. Mature sludge emptying pipe; 29. ​​Mature sludge discharge pipe; 30. Semi-mature sludge discharge pipe; 31. Water collecting pipe; 32. Water outlet pipe; 33. Floc suspension bed; 34. Water outlet plate. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] like Figure 1 , Figure 2As shown, this embodiment provides a non-powered high-density sedimentation device, including: a main body 1, for example, the main body 1 can be a vertical tank-shaped structure; a sludge multiplication center tube 2, which can be arranged concentrically with the main body 1 in the main body 1, and the space between the outer wall of the sludge multiplication center tube 2 and the inner wall of the main body 1 forms a sedimentation separation zone 3. A central lifting zone 4 is located in the sludge multiplication center tube 2, and a gap is left between the central lifting zone 4 and the tube wall of the sludge multiplication center tube 2 to form a return water port 5. The water inlet of the central lifting zone 4 is connected to an external water source. For example, the central lifting zone 4 can be formed by installing a central riser 20 in the sludge multiplication center tube 2. Since the middle diameter of the central riser 20 is smaller than the diameter at the water inlet, the fluid will be accelerated, so that the air lift effect (Bernoulli principle) can be used to provide a continuous upward power to the channel water body; the density multiplication zone is located in the sludge multiplication center tube 2 and along the circumference of the central lifting zone 4. The density multiplication zone is arranged such that the density multiplication zone includes a first annular channel 6, an ascending channel 7, an inner ring descending zone 8 and a second annular channel 9 which are arranged in sequence along the flow path of the water body; the water inlet of the first annular channel 6 is connected with the water outlet of the central lifting zone 4, and the second annular channel 9 converges with the first annular channel 6 at the entrance of the ascending channel 7; the annular water collecting zone 10 is located in the sludge multiplication center tube 2 and is arranged along the circumference of the central lifting zone 4; the water outlet of the inner ring descending zone 8 is divided into a first branch and a second branch, the first branch is connected with the water inlet of the annular water collecting zone 10, and the second branch is connected with the water inlet of the second annular channel 9. The water inlet of the sedimentation and separation zone 3 is connected with the water outlet of the annular water collection zone 10, and the water outlet of the sedimentation and separation zone 3 is connected with the outside of the main body 1; the water flowing out through the water outlet of the central lifting zone 4 enters the first annular channel 6, flows out through the first annular channel 6, enters the ascending channel 7 to rise, and further enters the inner ring descending zone 8 to descend, and further flows out through the water outlet of the inner ring descending zone 8 to form the first branch and the second branch, and the water flowing out through the second branch enters the second annular channel 9, and further merges with the water flowing out of the first annular channel 6 and enters the ascending channel 7. The high-density flocs formed in the water mixing process are carried by the water into the annular water collection zone 10, and enter the sedimentation and separation zone 3 through the annular water collection zone 10, and the high-density flocs form a floc suspension bed 33 in the sedimentation and separation zone 3 to purify the water passing through. For example, the formation of the density multiplication zone can be achieved by installing a density multiplication inner part in the sludge multiplication center tube 2, wherein the density multiplication inner part can be composed of two annular plates 18, wherein the two annular plates 18 are arranged along the circumference of the central riser 20, the area between the inner annular plate 18 and the central riser 20 is used to form the ascending channel 7, and the area between the two annular plates 18 is used to form the inner ring descending area 8. It should be noted that the inner annular plate 18 refers to the annular plate 18 that is closer to the center line of the central riser 20.The formation method of the first annular channel 6 and the second annular channel 9 will be described in detail below.

[0027] The non-powered high-density sedimentation device provided in this embodiment has a density multiplication zone set between the central lifting zone 4 and the annular water collection zone 10 along the flow path of the water body, so that the water body circulates at high speed in the two channels of the ascending channel 7 and the inner ring descending zone 8 in the density multiplication zone, so that the collision between flocs and the collision between the reagent and the colloid are more frequent, which promotes the volume and density of the flocs and can provide high-density flocs for the sedimentation and separation zone 3 in the rear section for forming the floc suspension bed 33. Moreover, high-density floc sludge can be obtained under the premise of omitting the conventional sludge return process, and there is no need to lead the sludge in the rear section back through the pipeline, which is easy to install and saves the power consumption of the pipe return, making the process more energy-efficient than before.

[0028] Among them, it should be noted that in the existing water treatment process, hydraulic or external power is used to return the sludge in the rear section to the front section, and the adsorption capacity of the sludge itself is used to increase the sludge density in the front section. However, the present application performs multiple internal circulations in the front section area to increase the sludge density.

[0029] Among them, a number of guide plates 11 are arranged in an interlaced manner along the fluid direction of the water body in the inner ring downward zone 8. For example, the guide plates 11 can be installed on the inner wall of the outer annular plate 18 and the outer wall of the inner annular plate 18, and each guide plate 11 can be arranged in the horizontal direction, and the area of ​​the guide plate 11 is smaller than the water outlet area of ​​the inner ring downward zone 8. In this way, when the water body in the inner ring downward zone 8 moves downward, it will collide with the guide plate 11, change speed and other turbulent effects, making the collision between flocs and the collision between the agent and the colloid more frequent, which promotes the volume and density of the flocs and is conducive to the generation of high-density flocs.

[0030] Among them, the water outlet of the inner ring downward zone 8 is provided with a reflecting plate 12 to guide the water body to flow toward the water inlet of the second annular channel 9, so that the water body changes from flowing downward to flowing upward. For example, at the water outlet position of the inner ring downward zone 8, the end of the inner annular plate 18 can be provided with a folded edge inclined toward the direction of the outer annular plate 18, so that the diameter of the water outlet of the inner ring downward zone 8 is reduced, which can have an acceleration effect on the water body after the water is discharged. For example, the reflecting plate 12 can be installed on the outer annular plate 18, and the direction of the reflecting plate 12 can be parallel to the folded edge at the end of the inner annular plate 18, so as to better guide the water body obliquely upward into the second annular channel 9.

[0031] Among them, the unpowered high-density sedimentation device also includes an external descending zone 13 and a diversion zone 14; the external descending zone 13 is located in the sludge multiplication center tube 2 and is arranged along the circumference of the density multiplication zone, and the water inlet of the external descending zone 13 is connected with the water outlet of the central lifting zone 4; the diversion zone 14 is located in the sludge multiplication center tube 2 and is arranged along the circumference of the density multiplication zone, and the water inlet of the diversion zone 14 is connected with the water outlet of the external descending zone 13; the water outlet of the diversion zone 14 is divided into a third branch and a fourth branch, the third branch is connected with the water inlet of the first annular channel 6, and the fourth branch is connected with the return water port 5. For example, the formation of the diversion area 14 can be achieved by installing a guide cover 19 in the sludge multiplication center tube 2. The guide cover 19 can be an inverted cone structure as a whole. The small end of the guide cover 19 faces upward and is sleeved on the outer periphery of the central riser 20. The small end of the guide cover 19 can be provided with an extension section parallel to the central riser 20. The area between the extension section of the small end of the guide cover 19 and the central riser 20 can form the first annular channel 6. The area between the rest of the guide cover 19 and the central riser 20 forms the diversion area 14, and the water outlet surface of the diversion area 14 adapted to the water outlet of the first annular channel 6 can be gradually reduced, and the water body will be accelerated when entering the first annular channel 6 from the diversion area 14.

[0032] At the same time, the area between the inner annular plate 18 and the deflector 19 and its extension forms a second annular channel 9. The presence of the deflector 19 can gradually reduce the water outlet surface of the outer descending area 13, and can also accelerate the water entering the diversion area 14 from the outer descending area 13.

[0033] For example, the bottom of the outer annular plate 18 extends downward to connect with the guide cover 19, and the space enclosed by the reflector 12, the guide cover 19 and the outer annular plate 18 serves as the annular water collection area 10. Sludge multiplication center tube 2 Among them, the unpowered high-density sedimentation device also includes a nozzle 15 and a water inlet pipe 16; the nozzle 15 is arranged in the central lifting area 4; one end of the water inlet pipe 16 is connected to the nozzle 15, and the other end is suitable for connecting to the water source outside the main body 1, and the nozzle 15 accelerates the water body and sends it into the central lifting area 4.

[0034] Among them, in the present application, water with several times the amount of water in the diversion area 14 flows back from the reflux port at the bottom of the central riser 20 due to the effect of the central drainage and mixes with the water at the outlet of the nozzle 15. Under the effect of the water inlet flow, water with the same amount of water inflow rises and enters the first annular channel 6. In this process, the spatial cross-sectional area of ​​the diversion area 14 is large, and the amount of water rising into the first annular channel 6 is small, so the rising water will undergo sedimentation and separation, and the heavier flocs will sink and re-enter the central riser 20 for density. In this way, after the system has been running for a period of time, the sludge density of the water mixture rising into the first annular channel 6 will gradually increase until it reaches a relative equilibrium amount.

[0035] The non-powered high-density sedimentation device further includes an exhaust pipe 17, one end of which is connected to the intersection of the ascending channel 7 and the inner ring descending zone 8, and the other end is connected to the central lifting zone 4. For example, the top of the central ascending pipe 20 can be folded outward and connected to the top of the outer annular plate 18, and the water flowing out of the central lifting zone 4 can spread to the surroundings and pass over the top of the outer annular plate 18 to enter the outer descending zone 13. For example, the exhaust pipe 17 can be arranged on the inner wall of the central ascending pipe 20 in the horizontal direction, and the exhaust pipe 17 penetrates the pipe wall of the central ascending pipe 20. The gas carried by the water in the ascending channel 7 that hits the central ascending pipe 20 at the top can be discharged from the exhaust pipe 17 to the central lifting zone 4, preventing the internal air pressure of the ascending channel 7 from being too high, avoiding the water in the ascending channel 7 from being obstructed during the upward process, and facilitating the high-speed circulation of the water between the ascending channel 7 and the inner ring descending zone 8.

[0036] It also includes an annular water distribution bin 23, which is arranged outside the sludge multiplication center tube 2 and distributed along the circumference of the diversion area 14. The water inlet of the annular water distribution bin 23 is connected to the water outlet of the annular water collection area 10, and the water outlet of the annular water distribution bin 23 is connected to the sedimentation separation area 3. For example, the bottom of the sludge multiplication center tube 2 can be contracted inward, and the extra space after contraction is used to form the annular water distribution bin 23. Figure 2 , Figure 3 As shown, the water outlet side of the annular water distribution bin 23 adopts a water outlet plate 34 with a toothed opening for water outlet.

[0037] It also includes a first annular partition plate 21, which is arranged in the main body 1. The bottom of the first annular partition plate 21 is connected to the outer wall of the nozzle 15, and the top of the first annular partition plate 21 extends to the sedimentation and separation zone 3; the space between the outer wall of the first annular partition plate 21 and the inner wall of the main body 1 forms a mature sludge flow channel 25; the bottom of the sludge multiplication center tube 2 is a conical bottom to form a mature sludge collecting bucket 27, and the mature sludge in the sedimentation and separation zone 3 enters the mature sludge collecting bucket 27 through the mature sludge flow channel 25.

[0038] It also includes a second annular partition plate 22, which is arranged in the main body 1 and located on the inner side of the first annular partition plate 21. One end of the second annular partition plate 22 extends into the central lifting area 4 through the return water port 5, and the other end extends toward the sedimentation separation area 3. The space between the outer wall of the second annular partition plate 22 and the inner wall of the first annular partition plate 21 forms a semi-mature sludge flow channel 26, and the semi-mature sludge in the sedimentation separation area 3 enters the central lifting area 4 through the semi-mature sludge flow channel 26. For example, the bottom of the sludge multiplication center tube 2 can be connected to the second annular partition plate 22, and the bottom of the sludge multiplication center tube 2, the second annular partition plate 22 and the plate with a toothed mouth are used to form an annular water distribution bin 23. For example, the annular water distribution bin 23 and the annular water collection area 10 can be connected through a plurality of collecting pipes 24 arranged along the circumference of the annular water collection area 10. For example, the portion of the second annular partition plate 22 extending into the central riser 20 can be adapted to the bottom shape of the central riser 20 to better guide the water in the diversion area 14 to flow back from the return port 5 to the central lifting area 4.

[0039] For example, a mature sludge emptying pipe 28 may be provided, one end of which extends out of the main body 1 and the other end of which is connected to the mature sludge collecting bucket 27 for emptying the mature sludge in the mature sludge collecting bucket 27 .

[0040] For example, a mature sludge discharge pipe 29 may be provided, one end of which extends out of the main body 1 and the other end of which is connected to the mature sludge collecting bucket 27, for discharging the mature sludge in the mature sludge collecting bucket 27. The difference between the mature sludge discharge pipe 29 and the mature sludge emptying pipe 28 is that the outlet of the mature sludge emptying pipe 28 is lower for easy emptying.

[0041] For example, a semi-mature sludge discharge pipe 30 may be provided, one end of which extends out of the main body 1 and the other end of which is connected to the semi-mature sludge flow channel 26 for discharging the semi-mature sludge in the semi-mature sludge flow channel 26 .

[0042] For example, a plurality of water collecting pipes 31 may be provided, and the water collecting pipes 31 are provided at the top of the sedimentation and separation zone 3. The water outlet of the water collecting pipe 31 is connected with the outlet pipe 32. A plurality of water collecting holes are provided on the wall of each water collecting pipe 31. The water treated by the floc suspension bed 33 is collected by the water collecting pipe 31 through the water collecting holes, and finally discharged from the unpowered high-density sedimentation device through the outlet pipe 32.

[0043] When in use: water enters from the water inlet pipe 16 and is released from the nozzle 15 at an accelerated speed. At the same time, under the action of the Bernoulli principle, the refluxed water enters the central lifting area 4 together with the water in the nozzle 15, is released at the top of the central lifting area 4 through the enlarged opening, and then enters the external descending area 13. When the water descends to the bottom, the guide cover 19 disperses the water to the surroundings. Since the reflux is in the center, the deflection can extend the water's path and increase the residence time. In addition, the guide cover 19 changes the water-passing section, plays a role in speed change, and enhances the mixing effect. Most of the water in the diversion area 14 enters the central rising cylinder due to the internal circulation, and the continuous water inflow pushes the rest of the water into the first annular channel 6. Since the cross-sectional area of ​​the first annular channel 6 is reduced, the flow rate of the water increases after it is released upward. Under the action of the Bernoulli principle, the water in the second annular channel 9 will participate in the water inflow and enter the rising channel 7. Due to the increase in water volume, the flow rate increases. The water flows over the top of the rising channel 7 and enters the inner ring descending area 8. When the water descends, the reflector 12 changes the direction of the water from downward to obliquely upward, which is beneficial to the drainage of the first annular channel 6. Due to the thrust of the inflow, the excess water will bypass the reflector 12 and enter the annular water collection area 10, and the water will be introduced into the annular water distribution tank 23 through the collection pipe 24. Afterwards, the water body carrying high-density flocs flows out from the annular water distribution silo 23 to the sedimentation and separation zone 3. As the high-density flocs in the sedimentation and separation zone 3 continue to accumulate, a floc suspension bed 33 can be formed in the sedimentation and separation zone 3. The water body is purified when passing through the floc suspension bed 33. The purified clean water enters the water collection pipe 31 and is finally discharged from the outlet pipe 32. Among them, the mature sludge in the sedimentation and separation zone 3 can enter the mature sludge collection bucket 27 from the mature sludge flow channel 25 and be discharged from the mature sludge discharge pipe 29. The semi-mature sludge in the sedimentation and separation zone 3 can enter the central lifting zone 4 from the semi-mature sludge flow channel 26 to participate in mixing and stirring again, and can also be discharged from the semi-mature sludge discharge pipe 30.

[0044] In summary, in the non-powered high-density sedimentation device of the present application, the floc sludge is hydraulically refluxed inside the multiplication device without external power. Moreover, there is no need to lead the sludge back to the rear section through the pipeline, which is easy to install and saves the power consumption of the pipe reflux, which is more energy-saving than before.

[0045] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A non-powered high-density precipitation device, characterized in that: include: Subject (1); A sludge multiplication central cylinder (2) is arranged inside the sludge multiplication central cylinder (2), and a sedimentation and separation zone (3) is formed in the space between the sludge multiplication central cylinder (2) and the sludge multiplication central cylinder (2); A central lifting zone (4) is located in the sludge multiplication central cylinder (2), a gap is left between the central lifting zone (4) and the cylinder wall of the sludge multiplication central cylinder (2) to form a water return port (5), and a water inlet of the central lifting zone (4) is connected to an external water source; A density multiplication zone is located in the sludge multiplication central tube (2) and is arranged along the circumference of the central lifting zone (4), and the density multiplication zone includes a first annular channel (6), an ascending channel (7), an inner ring descending zone (8) and a second annular channel (9) which are arranged in sequence along the flow direction of the water body; the water inlet of the first annular channel (6) is connected to the water outlet of the central lifting zone (4), and the second annular channel (9) and the first annular channel (6) converge at the inlet of the ascending channel (7); An annular water collection area (10) is located in the sludge multiplication center tube (2) and the sludge multiplication center tube (2) is arranged along the circumference of the central lifting area (4); the water outlet of the inner ring descending area (8) is divided into a first branch and a second branch, wherein the first branch is connected to the water inlet of the annular water collection area (10), and the second branch is connected to the water inlet of the second annular channel (9); The water inlet of the sedimentation and separation zone (3) is connected to the water outlet of the annular water collection zone (10), and the water outlet of the sedimentation and separation zone (3) is connected to the outside of the main body (1); The water flowing out through the water outlet of the central lifting zone (4) enters the first annular channel (6), flows out through the first annular channel (6) into the ascending channel (7), ascends, and further enters the inner ring descending zone (8) to descend, and further flows out through the water outlet of the inner ring descending zone (8) to form the first branch and the second branch. The water flowing out through the second branch enters the second annular channel (9), and further merges with the water flowing out of the first annular channel (6) and enters the ascending channel (7); the high-density flocs formed in the water mixing process are carried by the water into the annular water receiving zone (10), and enter the sedimentation separation zone (3) through the annular water receiving zone (10), and the high-density flocs form a floc suspension bed (33) in the sedimentation separation zone (3) to purify the water passing through.

2. The unpowered high-density precipitation device according to claim 1, characterized in that: The water outlet of the inner ring downward zone (8) is provided with a reflecting plate (12) to guide the water body to flow toward the water inlet of the second annular channel (9), so that the water body changes from flowing downward to flowing upward.

3. The unpowered high-density precipitation device according to any one of claims 1-2, characterized in that: It also includes an outer descending area (13) and a diversion area (14); The outer descending zone (13) is located in the sludge multiplication central cylinder (2) and is arranged along the circumference of the density multiplication zone, and the water inlet of the outer descending zone (13) is connected to the water outlet of the central lifting zone (4); The diversion zone (14) is located in the sludge multiplication central tube (2) and is arranged along the circumference of the density multiplication zone. The water inlet of the diversion zone (14) is connected to the water outlet of the external descending zone (13); the water outlet of the diversion zone (14) is divided into a third branch and a fourth branch, the third branch is connected to the water inlet of the first annular channel (6), and the fourth branch is connected to the return water port (5).

4. The unpowered high-density precipitation device according to claim 3, characterized in that: The diversion area (14) is adapted to have a water outlet surface of the first annular channel (6) that gradually decreases.

5. The unpowered high-density precipitation device according to claim 3, characterized in that: The water outlet surface of the water outlet of the outer descending zone (13) gradually decreases.

6. The unpowered high-density precipitation device according to claim 3, characterized in that: It also includes a spray pipe (15) and a water inlet pipe (16); The nozzle (15) is arranged in the central lifting area (4); One end of the water inlet pipe (16) is connected to the nozzle (15), and the other end is suitable for connecting to a water source outside the main body (1). The nozzle (15) accelerates the water and then sends it into the central lifting area (4).

7. The unpowered high-density precipitation device according to claim 1, characterized in that: It also includes an exhaust pipe (17), one end of which is connected to the intersection of the ascending channel (7) and the inner ring descending area (8), and the other end of which is connected to the central lifting area (4).

8. The unpowered high-density precipitation device according to claim 6, characterized in that: It also includes an annular water distribution bin (23), which is arranged on the outside of the sludge multiplication center tube (2) and distributed along the circumference of the diversion area (14), the water inlet of the annular water distribution bin (23) is connected to the water outlet of the annular water collection area (10), and the water outlet of the annular water distribution bin (23) is connected to the sedimentation separation area (3).

9. The unpowered high-density precipitation device according to claim 8, characterized in that: It also comprises a first annular partition plate (21) disposed in the main body (1), the bottom of the first annular partition plate (21) being connected to the outer wall of the nozzle (15), and the top of the first annular partition plate (21) extending to the sedimentation separation zone (3); The space between the outer wall of the first annular partition plate (21) and the inner wall of the main body (1) forms a mature sludge flow channel (25); The bottom of the main body (1) is a conical bottom to form a mature sludge collecting bucket (27), and the mature sludge in the sedimentation and separation zone (3) enters the mature sludge collecting bucket (27) through the mature sludge flow channel (25).

10. The unpowered high-density precipitation device according to claim 9, characterized in that: It also includes a second annular partition plate (22), which is arranged in the main body (1) and located on the inner side of the first annular partition plate (21), one end of the second annular partition plate (22) extends into the central lifting area (4) through the return water port (5), and the other end extends toward the sedimentation separation area (3); the space between the outer wall of the second annular partition plate (22) and the inner wall of the first annular partition plate (21) forms a semi-mature sludge flow channel (26), and the semi-mature sludge in the sedimentation separation area (3) enters the central lifting area (4) through the semi-mature sludge flow channel (26).

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