A screw-type floating sludge removal tower

Abstract

The utility model discloses a kind of rotary cutting type floating sludge removal tower, including fixed tower cylinder, sewage submersible pump, sewage submersible pump outlet pipe, cutting impeller, rotary injection pipe assembly and damping adjusting plate, sewage submersible pump outlet pipe top end is connected with rotary injection pipe assembly by rotating structure, the vertical pipe body lower end outlet of rotary injection pipe assembly two sides is respectively arranged along the circumferential tangent direction of fixed tower cylinder each other reverse, vertical pipe body is respectively provided with damping adjusting plate, rotary injection pipe assembly on the upper end of fixed tower cylinder is also coaxially provided with cutting impeller, sewage submersible pump suction sludge is sprayed by rotary injection pipe assembly, generates moment to drive rotary injection pipe assembly to drive cutting impeller to rotate and cut floating sludge.The utility model structure is reasonable, can be installed, debugged and operated under the condition of not stopping water, effectively solve the influence of floating sludge to system.

Description

Technical Field

[0001] This utility model belongs to the field of municipal sewage treatment and relates to a rotary shearing sludge removal tower. Background Technology

[0002] Activated sludge floating is a complex and challenging problem in wastewater treatment, directly impacting water purification efficiency and operating costs. In the wastewater treatment process, activated sludge, as the core of biological treatment, directly affects effluent quality. However, when sludge floats to the surface, it not only leads to turbid effluent but can also cause system collapse, disrupting the entire wastewater treatment process. The reasons behind this phenomenon are varied, ranging from sludge bulking and insufficient aeration to abnormal pH levels; each factor can potentially trigger sludge floating.

[0003] The hazards of activated sludge floating to the surface cannot be ignored. On the one hand, the floating activated sludge occupies limited tank space, reducing wastewater treatment efficiency and increasing operating costs. On the other hand, because the floating sludge contains a large number of microorganisms and organic matter, direct discharge will severely deteriorate the effluent quality, threatening the ecological environment and human health. Moreover, if the activated sludge continues to float to the surface and is not effectively controlled, it may lead to an imbalance in the ecological balance of the entire wastewater treatment system, disordered microbial community structure, and ultimately cause the entire wastewater treatment system to lose its treatment capacity.

[0004] The technologies currently used in practice, such as water spraying to sink floating mud and forced vortex mixing technology, have a certain ability to remove floating mud, but the effect is not ideal. Summary of the Invention

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

[0006] The specific technical solution is as follows: A rotary cutting type sludge removal tower includes a fixed tower, a submersible pump, a submersible pump outlet pipe, a cutting impeller, a rotary jet pipe assembly, and a damping adjustment plate. The submersible pump is installed at the bottom of the fixed tower. An upper bearing seat is installed at the center of the top of the fixed tower via a horizontal support arm. A lower bearing seat is installed at the top of the submersible pump outlet pipe. A planar thrust bearing is installed in each of the upper and lower bearing seats. A rotary transfer pipe is installed between the upper and lower bearing seats via a liquid-sealed fit structure. The upper end of the rotary transfer pipe is connected to the central pipe of the rotary jet pipe assembly. The top of the central pipe... Each L-shaped branch pipe is symmetrically connected to the left and right sides. Fixed hangers are installed on the horizontal pipes of the L-shaped branch pipes. A cylindrical cutting impeller is fixed below the fixed hangers. The cutting impeller is arranged coaxially with the central pipe. The blades of the cutting impeller are parallel to the central pipe. The lower ends of the L-shaped branch pipes are located on the left and right sides of the fixed tower. The injection nozzles at the lower ends of the L-shaped branch pipes are arranged in opposite directions along the circumferential tangent of the fixed tower. A rectangular damping adjustment plate is installed on the vertical pipe of each L-shaped branch pipe. The long side of the damping adjustment plate is parallel to the vertical pipe of the L-shaped branch pipe.

[0007] During operation, simply turning on the submersible sewage pump causes sewage to be ejected from the jet pipe outlet. The jet pipe outlet is arranged tangentially along the circumference and designed as two symmetrical structures. Under the torque of the reverse jetting water, it rotates automatically. The cutting impeller is fixed on the rotating jet pipe assembly and rotates synchronously. Due to the suction effect of the submersible sewage pump, the liquid level inside the tower drops. At this time, the floating mud on the water surface outside the tower is broken up by the action of the rotating cutting impeller and enters the tower through the gaps between the cutting blades. The mud-water mixture that enters the tower is then pumped by the submersible sewage pump and sprayed to the bottom of the pool through the jet nozzle. The rotating jet also simultaneously agitates the bottom of the pool. The rotation speed of the jet pipe and the cutting impeller is controlled by a damping adjustment plate. This invention utilizes a rotating cutting impeller to break up the floating sludge at the top of the biological treatment tank. A submersible pump then pumps the sludge into the bottom of the tank via a rotary jet. This rotary jetting process also effectively agitates the bottom of the tank, eliminating the need for a traditional underwater mixer. This invention not only removes floating sludge but also agitates the bottom sludge, contributing positively to energy conservation and emission reduction in wastewater treatment. The device is simple in structure, easy to operate, and can be installed and run without interrupting water supply, effectively removing floating sludge from biological treatment tanks.

[0008] Compared with the existing technology, the advantages of this utility model are: 1. The equipment has a simple structure, low difficulty in processing and manufacturing parts, and low production cost; 2. It is easy to install and fix, and can be hoisted and placed in the pool; 3. It can easily achieve installation and maintenance without stopping water supply; 4. It removes floating mud while realizing underwater stirring, replacing underwater agitators; 5. The entire power source is only the submersible sewage pump, which has a safe and reliable structure and ensures long-term operation. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0010] Figure 2 This is a top view of the structure of this utility model;

[0011] Figure 3 for Figure 2 AA section view in the middle;

[0012] Figure 4 for Figure 3 Enlarged structural diagram of part I in the diagram;

[0013] Figure 5 for Figure 3 Enlarged structural diagram of part II in the diagram;

[0014] Figure 6 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 7 This is a three-dimensional structural diagram of the rotary jet pipe assembly of this utility model. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0017] A rotary sludge removal tower, such as Figure 1-7As shown, the system includes a fixed tower 1 with a bottom inspection door 10, a submersible pump 2, a submersible pump outlet pipe 3, a cutting impeller 7, a rotary jet pipe assembly 6, and a damping adjustment plate 9. The submersible pump 2 is installed inside the bottom of the fixed tower 1. An upper bearing seat 16 is installed at the center of the top of the fixed tower 1 via a horizontal support arm 12. A lower bearing seat 19 is installed at the top of the submersible pump outlet pipe 3. A planar thrust bearing 15 is installed in each of the upper and lower bearing seats 16 and 19. A rotary adapter pipe 5 is installed between the upper and lower bearing seats 16 and 19 via a liquid-tight fit structure. The upper end of the rotary adapter pipe 5 is connected to the central pipe of the rotary jet pipe assembly 6. An L-shaped branch pipe 11 is symmetrically connected to the top of the central pipe. Fixed hangers 8 are installed on the horizontal pipe body, and a cylindrical cutting impeller 7 is fixedly attached to the bottom of the fixed hanger 8. The cutting impeller 7 is coaxially arranged with the central pipe, and the blades of the cutting impeller 7 are all vertically arranged and parallel to the central pipe. The lower ends of the L-shaped branch pipes 11 are located on the left and right sides of the fixed tower 1, respectively. The spray nozzles at the lower ends of the L-shaped branch pipes 11 are arranged in opposite directions along the circumferential tangent of the fixed tower. The high-speed water jets sprayed from the spray nozzles are in opposite directions, forming a pair of torques applied to the rotating spray pipe assembly 6, driving the cutting impeller 7 to rotate. A rectangular damping adjustment plate 9 is installed on the vertical pipe body of the L-shaped branch pipe 11, and the long side of the damping adjustment plate 9 is parallel to the vertical pipe body of the L-shaped branch pipe 11. The rotation speed of the cutting impeller 7 is controlled by adjusting the angle between the damping adjustment plate 9 and the water body when the plate rotates. Example

[0018] For biological ponds with severe floating sludge, this utility model equipment can be directly hoisted and placed in the appropriate location without interrupting water supply or production. Simply connect the power supply to the submersible pump 2 in this utility model equipment, turn on the submersible pump 2, and the sewage will be ejected in opposite directions through the submersible pump outlet pipe 3, the rotating adapter pipe 5, the rotating 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 along the circumferential tangent of the fixed tower 1 and designed as two symmetrical structures. Under the torque of the reverse jetting water, the rotating jet pipe assembly 6 rotates automatically. The cutting impeller 7 is coaxially fixed to the rotating jet pipe assembly 6 via a fixed hanger 8 and rotates synchronously. The suction effect of the submersible pump 2 causes the liquid level inside the fixed tower 1 to drop. At this time, the floating 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 sludge-water mixture entering the tower is then pumped by the submersible pump 2 and sprayed to the bottom of the pool through the nozzle of the rotary jet assembly 6. The rotary jet also simultaneously agitates the bottom of the pool. The rotation speed of the rotary jet assembly 6 and the cutting impeller 7 is controlled by the damping regulating plate 9. Figure 1 , 2As shown, a rectangular damping adjustment plate 9 is hinged to the vertical sections of the two L-shaped branch pipes 11 of the rotating jet pipe assembly 6 via a hinge on one long side. To better control the rotational 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 parts of the L-shaped branch pipe 11 respectively. To prevent the angle limiting plate 21 from colliding 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, thus not restricting the rotation of the damping adjustment plate 9. Multiple angle limiting holes are provided on the angle limiting plate 21 within a 90-degree range. A pin 20 passes vertically between the angle limiting holes of the upper and lower angle limiting plates 21. The angle of the damping adjustment plate 9 is changed by changing the position of the pin 20. This is only one specific embodiment; other structures can also be used to achieve the same effect as the damping adjustment plate 9.

[0019] like Figure 4 As shown, a rotating adapter pipe 5 is connected to the lower end of the central tube of the rotating jet pipe assembly 6. An annular shoulder is provided on the upper part of the rotating adapter pipe 5. A planar thrust bearing 15 is fitted onto the rotating adapter pipe 5 below the annular shoulder. The planar thrust bearing 15 is installed inside the 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 16 and welded and fixed to the tower 1. This easily achieves the entire weight of the rotating jet pipe assembly 6, the fixed hanger 8, and the cutting impeller 7 being supported by the upper bearing seat 16. The liquid-sealed fit structure involves the rotating adapter pipe 5 passing through the upper and lower gaps of the bearing seat, where skeleton oil seals 14 are installed for sealing.

[0020] like Figure 5 As shown, a lower bearing housing 19 is fixedly installed at the upper end of the submersible pump outlet fixed pipe 3. Inside the lower bearing housing 19, from bottom to top, are installed a lower main seal 18, an upper main seal 17, and a planar thrust bearing 15. The upper and lower main seals are made of PTFE, which is self-lubricating and wear-resistant. The upper main seal 17 is fixed together with the rotary connector 5 to achieve sealing while ensuring easy rotation of the rotary connector. Similarly, the liquid seal mating structure involves a skeleton oil seal 14 installed on the bearing housing sealing cover plate 13 of the rotary connector 5 to provide sealing.

Claims

1. A screw type floating sludge removal tower comprising a fixed tower cylinder, a submersible sewage pump, a submersible sewage pump outlet pipe, a cutting impeller, a rotating jet pipe assembly and a damping adjusting plate, characterized in that: A submersible sewage pump is installed at the bottom of the fixed tower. An upper bearing seat is installed at the center of the top of the fixed tower via a horizontal support arm. A lower bearing seat is installed at the top of the outlet pipe of the submersible sewage pump. A planar thrust bearing is installed in each of the upper and lower bearing seats. A rotating connector is installed between the upper and lower bearing seats via a liquid-sealed fit structure. The upper end of the rotating connector is connected to the central pipe of the rotating jet pipe assembly. An L-shaped branch pipe is symmetrically connected to the top of the central pipe. Fixed hangers are installed on the horizontal pipe body of the L-shaped branch pipe. A cylindrical cutting impeller is fixed below the fixed hanger. The cutting impeller is coaxial with the central pipe, and the blades of the cutting impeller are parallel to the central pipe. The lower ends of the L-shaped branch pipes are located on the left and right sides of the fixed tower. The jet nozzles at the lower ends of the L-shaped branch pipes are arranged in opposite directions along the circumferential tangent of the fixed tower. A rectangular damping adjustment plate is installed on the vertical pipe body of the L-shaped branch pipe. The long side of the damping adjustment plate is parallel to the vertical pipe body of the L-shaped branch pipe.

2. A screw-type floating sludge removal column according to claim 1, characterized in that An angle limiting plate is horizontally fixed to the upper and lower parts of the L-shaped branch pipe. To prevent the angle limiting plate from colliding with the damping adjustment plate during rotation, rectangular notches are opened at corresponding positions on the damping adjustment plate. The angle limiting plate is located within the rectangular notches. Multiple angle limiting holes are provided on the angle limiting plate within a 90-degree range. A pin is vertically inserted between the angle limiting holes of the upper and lower angle limiting plates. The angle of the damping adjustment plate is changed by changing the position of the pin.

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