Sedimentation tank energy dissipation device
By designing a multi-layer baffle structure energy dissipation drum and siphon mud machine in the sedimentation tank, the problem of low sedimentation efficiency of sedimentation tank jet and sludge under high flow conditions is solved, and more efficient sludge settlement and uniform flow of fluid is achieved. , reduces turbulent kinetic energy and flow velocity.
Patent Information
- Application Number
- CN202421059202.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The strong jet and turbulence caused by the central feeding method under high flow conditions affect the sludge settlement efficiency and is difficult to effectively reduce, resulting in uneven flow distribution and short circuit problems.
Design a sedimentation tank energy dissipation device, including setting up a water inlet pipe and energy dissipation drum at the bottom of the sedimentation tank. The energy dissipation drum consists of a multi-layer baffle, combined with a siphon mud machine, and adjusts the fluid through the multi-layer baffle structure and central plate design. Flow to avoid concentration of sludge deposition and achieve more uniform sludge deposition.
It effectively reduces the impact of the water jet inlet of the sedimentation tank, improves the precipitation efficiency, reduces the turbulent kinetic energy and the average fluid flow velocity, avoids the problems of uneven distribution of sludge and short circuit, and reduces the turbulent kinetic energy of the outlet by 19.38% and the average fluid flow velocity by 13.50%.
Smart Images
Figure CN222266242U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to an energy dissipation device for a sedimentation tank. Background Art
[0002] As a key unit in the water treatment process, the performance of the sedimentation tank is crucial to the water purification effect. At present, the central feeding method commonly used in radial flow sedimentation tanks is prone to produce strong jets due to the small feeding area, which leads to increased turbulence in the sedimentation chamber. Especially under high flow conditions, this turbulence will seriously affect the sedimentation effect of the sludge. In the prior art, the design of the energy dissipation drum is often limited by the cross-sectional area of the inlet, and it is difficult to effectively reduce the jet intensity in large sedimentation tanks or under high flow conditions, resulting in low sludge sedimentation efficiency and uneven flow distribution. Simply increasing the cross-sectional area of the inlet may cause problems such as short circuit and uneven sludge distribution. Summary of the invention
[0003] In view of the problems in the prior art, the utility model provides a sedimentation tank energy dissipation device, and its technical solution is: a sedimentation tank energy dissipation device, including a water inlet pipe arranged at the bottom of the sedimentation tank, an energy dissipation drum arranged on the top of the water inlet pipe, a water inlet arranged at the bottom of the water inlet pipe, and a siphon mud machine arranged at the bottom of the sedimentation tank.
[0004] As a preferred embodiment, the energy dissipation drum includes a base, a first baffle, a second baffle, a third baffle and an outer wall of the energy dissipation drum. The base is a circular ring structure, and the base is fixedly connected to the top of the water inlet pipe. The first baffle is fixedly arranged on the inner ring of the base, the third baffle is fixedly arranged on the outer ring, the second baffle is fixedly arranged between the first baffle and the third baffle, the first baffle, the second baffle and the third baffle have the same height, and the outer wall of the energy dissipation drum is fixedly arranged on the top of the first baffle, the second baffle and the third baffle.
[0005] As a preferred solution, the interval between the first baffle and the second baffle is 250-300 mm, and the interval between the second baffle and the third baffle is 250-300 mm.
[0006] As a preferred solution, the transmittances of the first baffle, the second baffle and the third baffle are all 45-55%, and the openings of the first baffle, the second baffle and the third baffle are all staggered.
[0007] As a preferred solution, a central tube is arranged inside the water inlet pipe.
[0008] As a preferred solution, a center plate is arranged around the water inlet pipe, and the center plate is a circular ring structure with a high inside and a low outside.
[0009] As a preferred embodiment, the siphon mud machine consists of a scraper, a siphon tube, a mud storage box and a mud discharge pipe. The scraper is in direct contact with the bottom of the sedimentation tank, the scraper is fixedly connected to the mud storage box, a number of siphon tubes are arranged at the bottom of the mud storage box, and the top of the mud storage box is fixedly connected to the mud discharge pipe.
[0010] The beneficial effects of the utility model are as follows: reducing the strong jet impact of the water entering the sedimentation tank, improving the sedimentation efficiency of the sedimentation tank, and avoiding the problems of short circuit and uneven sludge distribution. The outlet turbulent kinetic energy of the sedimentation tank using the device is reduced by 19.38% (from 7.57e-4j / kg to 6.103e-4j / kg), and the average flow rate of the fluid is reduced by 13.50%. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0012] Figure 2 It is a schematic diagram of the bottom structure of the energy dissipation drum in the utility model.
[0013] Figure 3 It is a cross-sectional view of the energy dissipation drum in the utility model.
[0014] Figure 4 It is a schematic diagram of the internal structure of the energy dissipation drum in the utility model.
[0015] Figure 5 It is a front view of the center plate in the utility model.
[0016] In the figure: 1. sedimentation tank; 101. center plate; 2. water inlet pipe; 201. water inlet; 202. center pipe; 3. energy dissipation drum; 301. base; 302. first baffle plate; 303. second baffle plate; 304. third baffle plate; 305. outer wall of energy dissipation drum; 4. siphon mud machine; 401. scraper; 402. siphon pipe; 403. mud storage box; 404. mud discharge pipe. DETAILED DESCRIPTION
[0017] The utility model is further described in detail below based on the accompanying drawings and specific embodiments.
[0018] Example 1
[0019] like Figure 1-5 As shown, a sedimentation tank energy dissipation device includes a water inlet pipe 2 arranged at the bottom of the sedimentation tank 1, an energy dissipation drum 3 arranged on the top of the water inlet pipe 2, a water inlet 201 arranged at the bottom of the water inlet pipe 2, and a siphon mud machine 4 is also arranged at the bottom of the sedimentation tank 1.
[0020] The energy dissipation drum 3 includes a base 301, a first baffle 302, a second baffle 303, a third baffle 304 and an energy dissipation drum outer wall 305. The base 301 is a circular ring structure, and the base 301 is fixedly connected to the top of the water inlet pipe 2. The first baffle 302 is fixedly arranged on the inner ring of the base 301, and the third baffle 304 is fixedly arranged on the outer ring. The second baffle 303 is fixedly arranged between the first baffle 302 and the third baffle 304. The first baffle 302, the second baffle 303 and the third baffle 304 have the same height, and the energy dissipation drum outer wall 305 is fixedly arranged on the top of the first baffle 302, the second baffle 303 and the third baffle 304.
[0021] The interval between the first baffle 302 and the second baffle 303 is 300 mm, and the interval between the second baffle 303 and the third baffle 304 is 250 mm.
[0022] The transmittance of the first baffle 302 , the second baffle 303 and the third baffle 304 is 50% and the openings of the first baffle 302 , the second baffle 303 and the third baffle 304 are staggered.
[0023] The water inlet pipe 2 is provided with a central tube 202 inside for arranging the wires of the siphon mud machine 4 .
[0024] A center plate 101 is arranged around the water inlet pipe 2, and the center plate 101 is a circular ring structure with a high inner side and a low outer side.
[0025] The siphon mud machine 4 is composed of a scraper 401, a siphon tube 402, a mud storage box 403 and a mud discharge pipe 404. The scraper 401 is in direct contact with the bottom of the sedimentation tank 1, the scraper 401 is fixedly connected to the mud storage box 403, eight siphon tubes 402 are arranged at the bottom of the mud storage box 403, and the top of the mud storage box 403 is fixedly connected to the mud discharge pipe 404.
[0026] The operation process of the device is as follows: sewage enters the energy dissipation drum 3 from the water inlet 201, flows out from the opening of the first baffle 302, is then blocked by the baffle of the second baffle 303, flows to both sides, enters the third baffle 304 from the opening, is then blocked by the baffle of the third baffle 304, flows to both sides, and is finally blocked by the outer wall 305 of the energy dissipation drum, and flows downward from the bottom outlet of the energy dissipation drum 3. Due to the special structure of the center plate 101, the sludge will not be deposited in the center in large quantities, but will diffuse outward. After the sludge is settled, it is sucked into the sludge storage box 403 by the siphon 402, and then discharged by the sludge discharge pipe 404. The clean water overflows in the sedimentation tank 1 to the next process.
Claims
1. A sedimentation tank energy dissipation device, characterized in that: The sedimentation tank (1) comprises a water inlet pipe (2) arranged at the bottom, an energy dissipation drum (3) arranged at the top of the water inlet pipe (2), a water inlet (201) arranged at the bottom of the water inlet pipe (2), and a siphon mud machine (4) also arranged at the bottom of the sedimentation tank (1).
2. A sedimentation tank energy dissipation device according to claim 1, characterized in that: The energy dissipation drum (3) comprises a base (301), a first baffle (302), a second baffle (303), a third baffle (304) and an energy dissipation drum outer wall (305). The base (301) is a circular ring structure. The base (301) is fixedly connected to the top of the water inlet pipe (2). The first baffle (302) is fixedly arranged on the inner ring of the base (301), the third baffle (304) is fixedly arranged on the outer ring, the second baffle (303) is fixedly arranged between the first baffle (302) and the third baffle (304), the first baffle (302), the second baffle (303) and the third baffle (304) have the same height, and the energy dissipation drum outer wall (305) is fixedly arranged on the top of the first baffle (302), the second baffle (303) and the third baffle (304).
3. A sedimentation tank energy dissipation device according to claim 2, characterized in that: The interval between the first baffle (302) and the second baffle (303) is 250-300 mm, and the interval between the second baffle (303) and the third baffle (304) is 250-300 mm.
4. A sedimentation tank energy dissipation device according to claim 2, characterized in that: The transmittances of the first baffle (302), the second baffle (303) and the third baffle (304) are all 45-55%, and the openings of the first baffle (302), the second baffle (303) and the third baffle (304) are all staggered.
5. The sedimentation tank energy dissipation device according to claim 1, characterized in that: A central tube (202) is arranged inside the water inlet pipe (2).
6. The sedimentation tank energy dissipation device according to claim 1, characterized in that: A central plate (101) is arranged around the water inlet pipe (2), and the central plate (101) is a circular ring structure with a high interior and a low exterior.
7. The sedimentation tank energy dissipation device according to claim 1, characterized in that: The siphon mud machine (4) is composed of a scraper (401), a siphon tube (402), a mud storage box (403) and a mud discharge pipe (404); the scraper (401) is in direct contact with the bottom of the sedimentation tank (1); the scraper (401) is fixedly connected to the mud storage box (403); a plurality of siphon tubes (402) are arranged at the bottom of the mud storage box (403); and the top of the mud storage box (403) is fixedly connected to the mud discharge pipe (404).