Rotary cutting type float sludge removal tower

Abstract

The invention discloses a rotary-cut type float sludge removal tower which comprises a fixed tower drum, a submersible sewage pump, a submersible sewage pump outlet pipe, a cutting impeller, a rotary injection pipe assembly and a damping adjusting plate, and the top end of the submersible sewage pump outlet pipe is connected with the rotary injection pipe assembly through a rotary structure; outlets at the lower ends of the vertical pipe bodies on the two sides of the rotary injection pipe assembly are oppositely arranged in the circumferential tangential direction of the fixed tower drum, damping adjusting plates are arranged on the vertical pipe bodies correspondingly, a cutting impeller is coaxially arranged on the rotary injection pipe assembly at the upper end of the fixed tower drum, and muddy water sucked by the submersible sewage pump is injected through the rotary injection pipe assembly. The generated torque drives the rotary injection pipe assembly to drive the cutting impeller to rotate to cut the float sludge. The system is reasonable in structure, can be installed, debugged and operated on site under the condition of not cutting off water, and effectively solves the influence of float sludge on the system.

Description

Technical Field

[0001] The invention belongs to the field of municipal sewage treatment and relates to a rotary cutting type floating mud removal tower. Background Art

[0002] Activated sludge flotation is a complex and challenging issue in wastewater treatment, directly impacting water purification effectiveness and operating costs. Activated sludge, the core of biological treatment, directly impacts effluent quality. However, when sludge flotation occurs, it not only causes effluent turbidity but can also cause system failure, impacting the entire wastewater treatment process. The causes of this phenomenon vary, ranging from sludge bulking to insufficient aeration to abnormal pH levels—each of which can be a potential trigger for sludge flotation.

[0003] The hazards of floating activated sludge cannot be ignored. On the one hand, floating activated sludge takes up limited tank space, reducing wastewater treatment efficiency and increasing operating costs. On the other hand, because floating sludge contains large amounts of microorganisms and organic matter, direct discharge would severely deteriorate effluent quality, threatening the ecological environment and human health. Furthermore, if activated sludge continues to float and is not effectively controlled, it can disrupt the ecological balance of the entire sewage treatment system, disrupting the microbial population structure and ultimately causing the system to lose its treatment capacity.

[0004] The technologies currently used in actual operations, such as spraying water to sink floating mud technology and forced vortex stirring technology, have certain floating mud removal capabilities, but the effects are not very ideal. Summary of the Invention

[0005] The purpose of the present invention is to provide a rotary cutting floating sludge removal tower that can be installed, debugged and operated on-site without stopping the water supply, effectively solving the impact of floating sludge on the system, reducing the environmental risk of substandard sewage treatment, and greatly improving the reliability and safety of biological pool operation.

[0006] The specific technical solution is: a rotary cutting type floating mud removal tower, including a fixed tower, a submersible sewage pump, a submersible sewage pump outlet pipe, a cutting impeller, a rotary jet pipe assembly and a damping adjustment plate. The submersible sewage pump is arranged at the bottom of the fixed tower, an upper bearing seat is arranged at the top center of the fixed tower through a horizontal support arm, a lower bearing seat is arranged at the top of the submersible sewage pump outlet pipe, a plane thrust bearing is arranged in the upper and lower bearing seats respectively, a rotary adapter is arranged between the upper and lower bearing seats through a liquid sealing structure, the upper end of the rotary adapter is connected to the central pipe of the rotary jet pipe assembly, and the top of the central pipe is connected to the central pipe of the rotary jet pipe assembly. They are respectively connected to an L-shaped branch pipe in a left-right symmetrical manner, and a fixed hanger is respectively provided on the horizontal tube body of the L-shaped branch pipe. A cylindrical cutting impeller is fixed below the fixed hanger. The cutting impeller is coaxially arranged with the central tube, and the blades of the cutting impeller are parallel to the central tube. The lower ends of the L-shaped branch pipes are respectively located on the left and right sides of the fixed tower, and the lower end injection ports of the L-shaped branch pipes are respectively arranged in opposite directions along the circumferential tangent direction of the fixed tower. A rectangular damping adjustment plate is respectively provided on the vertical tube body of the L-shaped branch pipe, and the long side of the damping adjustment plate is parallel to the vertical tube body of the L-shaped branch pipe.

[0007] To operate the submersible sewage pump, simply turn it on. Sewage is ejected through the jet pipe outlet, which is arranged along a tangential direction of the circumference and designed as two symmetrical structures. The jet pipe outlet automatically rotates under the torque of the reverse jet flow. The cutting impeller is fixed to the rotating jet pipe assembly and rotates synchronously. As the submersible sewage pump's suction action causes the liquid level in the tower to drop, the floating mud on the water surface outside the tower is broken up by the rotating cutting impeller and enters the tower through the gap between the cutting blades. The mud and water mixture entering the tower continues to be pumped by the submersible sewage pump and sprayed to the bottom of the pool through the jet port. The rotating jet also achieves agitation at the bottom of the pool. The speed of the jet pipe and cutting impeller rotation is controlled by the damping adjustment plate. The device of the present invention uses a rotating cutting impeller to break up the floating sludge at the top of the biological pool. The device then uses the pumping capacity of a submersible sewage pump to deliver the floating sludge to the bottom of the biological pool via a rotary jet. The rotary jetting process also effectively agitates the pool bottom, eliminating the need for a conventional underwater agitator. While removing the floating sludge, the device also agitates the sludge at the bottom of the pool, contributing positively to energy savings and consumption reduction during sewage treatment. The device of the present invention has a simple structure and is easy to operate. It can be installed and operated without shutting off the water supply and effectively removes floating sludge from the biological pool.

[0008] Compared with the existing technology, the advantages of the present invention are: 1. The equipment structure is simple, the difficulty of processing and manufacturing parts is low, and the production cost is low; 2. It is easy to install and fix, and it can be hoisted and placed in the pool; 3. It can be easily installed and maintained without stopping water; 4. It can remove floating mud while achieving underwater stirring, replacing the underwater agitator; 5. The entire power source is only a submersible sewage pump, the structure is safe and reliable, and long-term operation is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the present invention; Figure 3 for Figure 2 AA section view in; Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part I in FIG; Figure 5 for Figure 3 Schematic diagram of the enlarged structure of part II; Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the rotary injection pipe assembly of the present invention. DETAILED DESCRIPTION

[0010] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0011] A rotary cutting type floating mud removal tower, such as Figure 1-7 As shown, it includes a fixed tower 1 with a bottom inspection door 10, a submersible sewage pump 2, a submersible sewage pump outlet pipe 3, a cutting impeller 7, a rotary jet pipe assembly 6 and a damping adjustment plate 9. The submersible sewage pump 2 is arranged at the bottom of the fixed tower 1, and an upper bearing seat 16 is arranged at the top center of the fixed tower 1 through a horizontal support arm 12. A lower bearing seat 19 is arranged at the top of the submersible sewage pump outlet pipe 3. A plane thrust bearing 15 is respectively arranged in the upper and lower bearing seats 16 and 19. A rotary adapter pipe 5 is arranged between the upper and lower bearing seats 16 and 19 through a liquid sealing matching structure. The upper end of the rotary adapter pipe 5 is connected to the central pipe of the rotary jet pipe assembly 6. The top of the central pipe is symmetrically connected to an L-shaped branch pipe 11. The L-shaped branch pipe 11 Fixed hangers 8 are mounted on the horizontal tubes. A cylindrical cutting impeller 7 is fixed below fixed hanger 8. Cutting impeller 7 is coaxially arranged with the central tube. The blades of cutting impeller 7 are arranged vertically and parallel to the central tube. The lower ends of L-shaped branches 11 are located on the left and right sides of fixed tower 1. The lower end jet ports of L-shaped branches 11 are arranged in opposite directions along the circumferential tangent of the fixed tower. High-speed water jets ejected from these jet ports are in opposite directions, creating a pair of torques that exert on rotating jet pipe assembly 6, driving cutting impeller 7 to rotate. A rectangular damping adjustment plate 9 is mounted on the vertical tubes of L-shaped branches 11. The long side of damping adjustment plate 9 is parallel to the vertical tubes of L-shaped branches 11. The rotational speed of cutting impeller 7 is controlled by adjusting the angle between the damping adjustment plate 9 and the water during rotation. Example

[0012] For bio-ponds with significant sludge buildup, the present invention's equipment can be directly hoisted and placed in the appropriate location. No water or production outages are required. Simply connect the power supply to the submersible sewage pump 2 in the present invention and start the pump. Sewage is ejected in opposite directions through the pump outlet pipe 3, the rotary adapter pipe 5, the rotary jet pipe assembly 6, and the lower outlet of the L-shaped branch pipe 11. The lower outlet of the L-shaped branch pipe 11 is arranged tangentially to the circumference of the fixed tower 1 and designed as two symmetrical structures. The rotary jet pipe assembly 6 automatically rotates under the torque of the opposing water jets. The cutting impeller 7 is coaxially fixed to the rotary jet pipe assembly 6 via a fixed hanger 8, rotating synchronously. As the suction action of the submersible sewage pump 2 lowers the liquid level within the fixed tower 1, the sludge on the water surface outside the tower is broken up by the cutting impeller 7 and enters the tower 1 through the gaps between the cutting blades. The mud-water mixture entering the tower is then continuously pumped by the submersible sewage pump 2 and sprayed from the jet port of the rotary jet pipe assembly 6 to the bottom of the pond. The rotary jetting also simultaneously agitates the pond bottom. The speed of the rotating jet pipe assembly 6 and the cutting impeller 7 is controlled by the damping adjustment plate 9. Figure 1 、 2 As shown, the long side of a rectangular damping adjustment plate 9 is hingedly mounted on the vertical sections of the two L-shaped branches 11 of the rotating jet pipe assembly 6. To better control the rotation speed of the cutting impeller 7, the angle of the damping adjustment plate 9 needs to be adjusted. An angle limiting plate 21 is horizontally fixed to the upper and lower portions of the L-shaped branch 11. To prevent the angle limiting plate 21 from interfering with the rotation of the damping adjustment plate 9, rectangular notches are provided at corresponding positions on the damping adjustment plate 9. The angle limiting plate 21 is positioned within the rectangular notches, thereby preventing the damping adjustment plate 9 from rotating. Multiple angle limiting holes are provided on the angle limiting plate 21 within a 90-degree range. A pin 20 is vertically inserted between the angle limiting holes of the upper and lower angle limiting plates 21. By changing the position of the pin 20, the angle of the damping adjustment plate 9 can be changed. This is only a specific embodiment; other structures can also be used to achieve the same effect of the damping adjustment plate 9.

[0013] like Figure 4As shown, the lower end of the central tube body of the rotating jet tube assembly 6 is connected to a rotating adapter tube 5. An annular shoulder is provided on the upper tube body of the rotating adapter tube 5. A planar thrust bearing 15 is provided on the rotating adapter tube 5 below the annular shoulder. The planar thrust bearing 15 is installed in an upper bearing seat 16. A skeleton oil seal 14 is provided between the bottom surface of the planar thrust bearing 15 and the upper bearing seat 16. A bearing seat sealing cover 13 and a skeleton oil seal 14 are provided on the top surface of the upper bearing seat 16 above the top surface of the annular shoulder. Six horizontal support arms 12 are evenly distributed on the outer periphery of the bearing seat body 16 and welded to the tower 1. In this way, the entire weight of the rotating jet tube assembly 6, the fixed hanger 8, and the cutting impeller 7 are easily supported by the upper bearing seat 16. The liquid sealing structure is that the rotating adapter tube 5 passes through the upper and lower gaps of the bearing seat and is sealed with skeleton oil seals 14.

[0014] like Figure 5 As shown, a lower bearing seat 19 is fixedly mounted at the upper end of the submersible sewage pump's outlet fixed pipe 3. Inside this lower bearing seat 19, from bottom to top, are mounted a lower main seal 18, an upper main seal 17, and a planar thrust bearing 15. Both upper and lower main seals are made of PTFE, which is both self-lubricating and wear-resistant. The upper main seal 17 is secured to the rotary adapter 5, providing a seal while also ensuring easy rotation. Similarly, the liquid-tight seal structure described above involves sealing the rotary adapter 5 at its outlet from the bearing seat with a skeleton oil seal 14 mounted on the bearing seat sealing cover plate 13.

Claims

1. A rotary cutting type floating mud removal tower, comprising a fixed tower, a submersible sewage pump, a submersible sewage pump outlet pipe, a cutting impeller, a rotary jet pipe assembly and a damping adjustment plate, characterized by: A submersible sewage pump is arranged at the bottom of the fixed tower, and an upper bearing seat is arranged at the top center of the fixed tower through a horizontal support arm, and a lower bearing seat is arranged at the top of the submersible sewage pump outlet pipe, and a plane thrust bearing is respectively arranged in the upper and lower bearing seats, and a rotating adapter is arranged between the upper and lower bearing seats through a liquid sealing structure. The upper end of the rotating adapter is connected to the central tube of the rotating injection pipe assembly, and the top of the central tube is symmetrically connected to an L-shaped branch pipe. Fixed hangers are respectively arranged on the horizontal tube bodies of the L-shaped branches, and a cylindrical cutting impeller is fixed below the fixed hanger. The cutting impeller is coaxially arranged with the central tube, and the blades of the cutting impeller are parallel to the central tube. The lower ends of the L-shaped branches are respectively located on the left and right sides of the fixed tower, and the lower end injection ports of the L-shaped branches are respectively arranged in opposite directions along the tangential direction of the circumference of the fixed tower. A rectangular damping adjustment plate is respectively provided on the vertical tube body of the L-shaped branch, and the long side of the damping adjustment plate is parallel to the vertical tube body of the L-shaped branch.

2. A rotary cutting type floating mud removal tower according to claim 1, characterized in that: The upper and lower parts of the L-shaped branch pipe are respectively fixed horizontally with an angle limiting plate. In order to avoid interference between the angle limiting plate and the rotation of the damping adjustment plate, rectangular notches are respectively opened at the corresponding positions of the damping adjustment plate. The angle limiting plate is located in the rectangular notch. A plurality of angle limiting holes are provided on the angle limiting plate within a range of 90 degrees. A pin is vertically passed through the angle limiting holes of the upper and lower angle limiting plates. The angle of the damping adjustment plate can be changed by changing the position of the pin.

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