An inverted immersion type dosing stirring device
By embedding a stirring motor and setting an inverted submerged dosing and stirring device with upward-sloping stirring blades in the landfill leachate treatment equipment, the problem of large space occupation of the stirring device is solved, achieving efficient stirring and reducing the size of the equipment, making it suitable for leachate treatment in narrow spaces.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN ZHONGJING ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional municipal solid waste leachate treatment equipment has a large mixing device that takes up a lot of space, resulting in an increased equipment size and making it unsuitable for locations with limited space.
Design an inverted submerged dosing and stirring device, in which the stirring motor is embedded in the bottom wall of the reaction tank, the stirring shaft is equipped with upward-sloping stirring blades, the stirring speed is adjusted by a frequency converter, and the stirring motor is built-in and sealed by a sealing structure and cover.
It reduces the volume and space occupancy of the reaction tank, improves stirring efficiency and uniformity, reduces equipment noise and reagent consumption costs, and is suitable for leachate treatment in confined spaces.
Smart Images
Figure CN224377771U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste treatment technology, and in particular to an inverted immersion dosing and stirring device. Background Technology
[0002] Municipal solid waste leachate refers to a dark brown, foul-smelling liquid containing high concentrations of organic pollutants, heavy metals, pathogens, and toxic substances, produced during the dumping or landfilling of waste due to compaction, fermentation, and rainwater leaching. Its composition is complex, including ammonia nitrogen, COD (chemical oxygen demand), BOD (biochemical oxygen demand), salts, and various carcinogens (such as polycyclic aromatic hydrocarbons).
[0003] If leachate is released directly into the environment without treatment, it will severely pollute soil and groundwater, leading to eutrophication and damaging ecosystems. Heavy metals accumulate through the food chain, threatening human health and causing diseases such as cancer and liver and kidney damage. Pathogenic microorganisms in leachate may also spread diseases. Therefore, leachate is classified as a high-risk pollutant and must be strictly collected and treated using physical, chemical, and biological processes to meet standards before being discharged.
[0004] Traditional municipal solid waste leachate treatment equipment typically places the motor of the agitator outside the reaction tank due to space constraints. This increases the equipment's size and requires a larger floor area, making it unsuitable for locations with limited space, such as municipal waste transfer stations, old landfill renovation areas, near underground facilities, and islands. Therefore, there is an urgent need to research and develop an inverted submerged dosing and mixing device to solve these technical problems. Summary of the Invention
[0005] The purpose of this utility model is to provide an inverted submerged dosing and stirring device, which can reduce the volume of the reaction tank, thereby reducing the volume and space occupancy of the municipal solid waste leachate treatment equipment.
[0006] To achieve the above objectives, this utility model provides an inverted submersible dosing and stirring device, the specific implementation of which is as follows:
[0007] An inverted submerged dosing and stirring device includes a reaction tank, a tank body is provided inside the reaction tank, and a stirring motor is provided at the bottom of the tank body, the stirring motor being embedded in the bottom wall of the tank body;
[0008] A stirring shaft is provided in the tank, and the stirring shaft is connected to the motor shaft of the stirring motor. Several stirring blades are provided on the stirring shaft. The stirring blades are inclined upward and rotate with the stirring shaft under the drive of the stirring motor to form an axial swirling flow from bottom to top.
[0009] In some embodiments, a receiving groove and a through hole are provided on the bottom wall of the reaction tank. One end of the through hole is connected to the receiving groove, and the other end is connected to the tank body. The stirring motor is located in the receiving groove, and the motor shaft of the stirring motor extends through the through hole into the tank body.
[0010] In some embodiments, a first sealing groove is provided on the outer peripheral wall of the motor shaft of the stirring motor near the end of the stirring motor, and a first sealing ring is provided in the first sealing groove, with at most a portion of the first sealing ring embedded in the first sealing groove. A second sealing groove matching the first sealing groove is provided on the inner wall of the through hole, and a portion of the first sealing ring protruding from the first sealing groove is embedded in the second sealing groove.
[0011] In some embodiments, a third sealing groove is provided on the outer peripheral wall of the end of the motor shaft of the stirring motor away from the stirring motor, and a second sealing ring is provided in the third sealing groove, with at most a portion of the second sealing ring embedded in the third sealing groove. A fourth sealing groove matching the third sealing groove is provided on the inner wall of the through hole, and a portion of the second sealing ring protruding from the third sealing groove is embedded in the fourth sealing groove.
[0012] In some embodiments, the stirring blades are located at the top of the stirring shaft and are arranged in a ring array along the circumferential direction of the stirring shaft.
[0013] In some embodiments, a plurality of stirring blades are arranged in a ring array along the circumferential direction of the stirring shaft on the outer wall of the stirring shaft near the center of the stirring shaft.
[0014] In some embodiments, an opening is provided at the top of the reaction tank, and a cover is provided at the top of the reaction tank, the cover partially or completely closing the opening.
[0015] In some embodiments, a locking hook is provided on the cover, the locking hook is elastic, and a locking groove is provided on the outer wall of the reaction tank. The cover is closed on the reaction tank, and the locking hook is engaged with the locking groove.
[0016] In some embodiments, a coupling is connected to the bottom end of the stirring shaft, and the motor shaft of the stirring motor extends into the tank and connects to the coupling.
[0017] In some embodiments, a frequency converter is provided outside the reaction tank, and the frequency converter is electrically connected to the stirring motor.
[0018] Based on the above technical solution, this utility model has the following beneficial effects compared with the prior art:
[0019] 1. By installing a stirring motor embedded in the bottom wall of the reaction tank, and a stirring shaft connected to the motor shaft of the stirring motor inside the tank, and several stirring blades on the stirring shaft, the stirring blades are inclined upwards and rotate with the stirring shaft under the drive of the stirring motor to form an axial vortex from bottom to top. On the one hand, by embedding the stirring motor inside the reaction tank, the problem of high equipment space occupancy caused by installing the stirring motor outside the reaction tank can be avoided. On the other hand, the upward-inclined stirring blades, driven by the stirring motor, can prevent the accumulation of sediment at the bottom of the tank when stirring the liquid in the tank, thereby improving the efficiency of the flocculation reaction.
[0020] 2. By setting a receiving tank on the bottom wall of the reaction tank, the receiving tank uses through holes to guide the tank body, so that the motor shaft of the stirrer can be extended into the tank body and connected to the stirring shaft drive.
[0021] 3. By setting a first sealing groove on the motor shaft of the stirring motor, setting a first sealing ring that is partially embedded in the first sealing groove, and setting a second sealing groove that cooperates with the first sealing groove in the through hole, the part of the first sealing ring that protrudes from the first sealing groove is embedded in the second sealing groove, thereby achieving the sealing of the motor shaft of the stirring motor and the through hole, and preventing liquid in the tank from entering the receiving tank and damaging the stirring motor.
[0022] 4. By setting a third sealing groove on the motor shaft of the stirring motor, and setting a second sealing ring that is partially embedded in the first sealing groove on the third sealing groove, and setting a fourth sealing groove that cooperates with the third sealing groove in the through hole, the part of the second sealing ring that protrudes from the third sealing groove is embedded in the fourth sealing groove, thereby further sealing the motor shaft of the stirring motor and the through hole, and preventing liquid in the tank from entering the receiving tank and damaging the stirring motor.
[0023] 5. By placing the stirring blades at the top of the stirring shaft and distributing them in a ring array along the circumferential direction of the stirring shaft, the uniformity of the stirring blades on the liquid and the stirring water level height are improved.
[0024] 6. By also setting several stirring blades in a ring array along the circumferential direction of the stirring shaft near the center, the stirring efficiency, stirring effect and stirring uniformity of the liquid are improved.
[0025] 7. By installing a partially or completely closed cover on the top of the reaction tank, the risk of odor leakage during the chemical reaction can be reduced.
[0026] 8. By setting an elastic locking hook on the cover and a locking groove on the outer wall of the reaction tank, the cover and the reaction tank are locked by engaging the locking hook into the locking groove, thus preventing the cover from detaching due to the gas generated by the drug reaction.
[0027] 9. By using a coupling to achieve the transmission connection between the motor shaft and the mixing shaft of the stirring motor, the convenience of connection and transmission stability are improved.
[0028] 10. By installing a frequency converter outside the reaction tank and electrically connecting the frequency converter and the stirring motor, the rotation speed of the stirring motor can be adjusted. The rotation speed of the stirring motor can be manually adjusted according to the stirring speed required for adding drugs, thereby improving the uniformity of mixing of drugs and media, reducing turbulent energy consumption, improving drug utilization, and effectively reducing drug consumption costs. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the structure of this utility model;
[0030] Figure 2 This is a schematic diagram of the sealing structure of the motor shaft and through hole of this utility model;
[0031] Figure 3 This is a schematic diagram of the structure of the cover and reaction tank of this utility model.
[0032] Explanation of reference numerals in the attached figures:
[0033] 10. Reaction tank; 101. Tank body; 102. Receptacle; 103. Through hole; 104. Second sealing groove; 105. Fourth sealing groove; 106. Locking groove; 107. Opening; 20. Stirring motor; 201. Motor shaft; 202. First sealing groove; 203. Third sealing groove; 30. Stirring shaft; 301. Stirring blade; 40. Cover; 401. Locking hook; 50. First sealing ring; 60. Second sealing ring; 70. Coupling. Detailed Implementation
[0034] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.
[0035] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.
[0036] Unless otherwise specified or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.
[0037] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.
[0038] like Figure 1-3 As shown, the inverted immersion dosing and stirring device provided in this embodiment includes a reaction tank 10, a tank body 101 is provided in the reaction tank 10, and a stirring motor 20 is provided at the bottom of the tank body 101. The stirring motor 20 is embedded in the bottom wall of the tank body 101.
[0039] A stirring shaft 30 is provided inside the tank 101. The stirring shaft 30 is connected to the motor shaft 201 of the stirring motor 20. A plurality of stirring blades 301 are provided on the stirring shaft 30. The stirring blades 301 are inclined upward and rotate with the stirring shaft 30 under the drive of the stirring motor 20 to form an axial swirling flow from bottom to top.
[0040] In some embodiments, a receiving groove 102 and a through hole 103 are provided on the bottom wall of the reaction tank 10. One end of the through hole 103 is connected to the receiving groove 102, and the other end is connected to the tank body 101. The stirring motor 20 is located in the receiving groove 102. The motor shaft 201 of the stirring motor 20 passes through the through hole 103 and extends into the tank body 101, so that the stirring motor shaft 201 extends into the tank body 101 and is connected to the stirring shaft 30 for transmission.
[0041] In some embodiments, a first sealing groove 202 is provided on the outer peripheral wall of the motor shaft 201 of the stirring motor 20 near the end of the stirring motor 20. A first sealing ring 50 is provided in the first sealing groove 202, and at most part of the first sealing ring 50 is embedded in the first sealing groove 202. A second sealing groove 104 matching the first sealing groove 202 is provided on the inner wall of the through hole 103. The part of the first sealing ring 50 protruding from the first sealing groove 202 is embedded in the second sealing groove 104, thereby sealing the motor shaft 201 of the stirring motor 20 and the through hole 103 and preventing liquid in the tank 101 from entering the receiving tank 102 and damaging the stirring motor 20.
[0042] In some embodiments, a third sealing groove 203 is provided on the outer peripheral wall of the end of the motor shaft 201 of the stirring motor 20 away from the stirring motor 20. A second sealing ring 60 is provided in the third sealing groove 203, and at most part of the second sealing ring 60 is embedded in the third sealing groove 203. A fourth sealing groove 105 matching the third sealing groove 203 is provided on the inner wall of the through hole 103. The part of the second sealing ring 60 protruding from the third sealing groove 203 is embedded in the fourth sealing groove 105, thereby further sealing the motor shaft 201 of the stirring motor 20 and the through hole 103, and preventing liquid in the tank 101 from entering the receiving tank 102 and damaging the stirring motor 20.
[0043] In some embodiments, the stirring blades 301 are disposed at the top of the stirring shaft 30 and are arranged in a ring array along the circumferential direction of the stirring shaft 30, thereby improving the uniformity of stirring of the liquid by the stirring blades 301 and the stirring water level height.
[0044] In some embodiments, a plurality of stirring blades 301 are provided on the outer wall of the stirring shaft 30 near the center of the stirring shaft 30, arranged in a ring array along the circumferential direction of the stirring shaft 30, to improve the uniformity of stirring of the liquid by the stirring blades 301 and the stirring water level height.
[0045] In some embodiments, an opening 107 is provided at the top of the reaction tank 10, and a cover 40 is provided at the top of the reaction tank 10. The cover 40 closes part or completely closes the opening 107 to reduce the risk of odor overflow during the drug addition reaction.
[0046] In some embodiments, a locking hook 401 is provided on the cover 40. The locking hook 401 is elastic. A locking groove 106 is provided on the outer wall of the reaction tank 10. The cover 40 covers the reaction tank 10. The locking hook 401 is engaged with the locking groove 106 and locked in place to prevent the cover 40 from detaching due to the gas generated by the drug reaction.
[0047] In some embodiments, a coupling 70 is connected to the bottom end of the stirring shaft 30, and the motor shaft 201 of the stirring motor 20 extends into the tank 101 and connects to the coupling 70, thereby improving the convenience of connection and transmission stability.
[0048] In some embodiments, a frequency converter is provided outside the reaction tank 10. The frequency converter is electrically connected to the stirring motor 20, which allows manual adjustment of the rotation speed of the stirring motor 20 according to the stirring speed required for adding the drug. This improves the uniformity of mixing between the drug and the medium, reduces turbulent energy consumption, increases drug utilization, and effectively reduces drug consumption costs.
[0049] In this embodiment, the stirring motor 20 is placed in the receiving groove 102 on the bottom wall of the tank 101. On the one hand, this lowers the center of gravity of the reaction tank 10, improves the operational stability of the stirring motor 20, and reduces operating noise to some extent. On the other hand, since it is placed at the bottom, the water level of the tank 101 can be effectively raised, improving the space utilization of the tank 101 and reducing investment costs.
[0050] Furthermore, in this embodiment, the volume of the reaction tank 10 is reduced, making the reaction tank 10 with the stirring device suitable for narrow spaces. Its sealing structure for the stirring motor 20 reduces the risk of liquid backflow, and the cover 40 seals the opening 107 to reduce external steam corrosion.
[0051] The inverted submerged dosing and stirring device provided in this embodiment, compared with the prior art, has an inverted submerged dosing and stirring device. This device features a stirring motor 20 embedded in the bottom wall of the reaction tank 10, and a stirring shaft 30 connected to the motor shaft 201 of the stirring motor 20 within the tank 101. Several stirring blades 301 are mounted on the stirring shaft 30, which are inclined upwards. Driven by the stirring motor 20, these blades rotate with the stirring shaft 30, forming an axial vortex from bottom to top. This design avoids the problem of high space occupancy caused by placing the stirring motor 20 outside the tank 101, by embedding it within the reaction tank 10. Furthermore, the upwardly inclined stirring blades 301, driven by the stirring motor 20, prevent the accumulation of sediment at the bottom of the tank during stirring, thus improving the efficiency of the flocculation reaction.
[0052] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.
Claims
1. An inverted immersion dosing and stirring device, characterized in that, It includes a reaction tank (10), a tank body (101) is provided inside the reaction tank (10), and a stirring motor (20) is provided at the bottom of the tank body (101). The stirring motor (20) is embedded in the bottom wall of the tank body (101). A stirring shaft (30) is provided inside the tank (101). The stirring shaft (30) is connected to the motor shaft (201) of the stirring motor (20). A plurality of stirring blades (301) are provided on the stirring shaft (30). The stirring blades (301) are inclined upward, and the stirring blades (301) rotate with the stirring shaft (30) under the drive of the stirring motor (20) to form an axial swirling flow from bottom to top.
2. The inverted submerged dosing and stirring device according to claim 1, characterized in that, A receiving groove (102) and a through hole (103) are provided on the bottom wall of the reaction tank (10). One end of the through hole (103) is connected to the receiving groove (102), and the other end is connected to the tank body (101). The stirring motor (20) is located in the receiving groove (102), and the motor shaft (201) of the stirring motor (20) extends through the through hole (103) into the tank body (101).
3. The inverted submerged dosing and stirring device according to claim 2, characterized in that, A first sealing groove (202) is provided on the outer peripheral wall of the motor shaft (201) of the stirring motor (20) near the stirring motor (20). A first sealing ring (50) is provided in the first sealing groove (202), and at most part of the first sealing ring (50) is embedded in the first sealing groove (202). A second sealing groove (104) matching the first sealing groove (202) is provided on the inner wall of the through hole (103), and the part of the first sealing ring (50) protruding from the first sealing groove (202) is embedded in the second sealing groove (104).
4. The inverted submerged dosing and stirring device according to claim 3, characterized in that, A third sealing groove (203) is provided on the outer peripheral wall of the end of the motor shaft (201) of the stirring motor (20) away from the stirring motor (20). A second sealing ring (60) is provided in the third sealing groove (203), and at most part of the second sealing ring (60) is embedded in the third sealing groove (203). A fourth sealing groove (105) matching the third sealing groove (203) is provided on the inner wall of the through hole (103), and the part of the second sealing ring (60) protruding from the third sealing groove (203) is embedded in the fourth sealing groove (105).
5. The inverted submersible dosing and stirring device according to any one of claims 1-4, characterized in that, The stirring blades (301) are located at the top of the stirring shaft (30) and are arranged in a ring array along the circumferential direction of the stirring shaft (30).
6. The inverted submerged dosing and stirring device according to claim 5, characterized in that, Several stirring blades (301) are arranged in a ring array along the circumferential direction of the stirring shaft (30) near the center of the stirring shaft (30).
7. The inverted submersible dosing and stirring device according to any one of claims 1-4, characterized in that, An opening (107) is provided at the top of the reaction tank (10), and a cover (40) is provided at the top of the reaction tank (10), the cover (40) partially or completely closing the opening (107).
8. The inverted submerged dosing and stirring device according to claim 7, characterized in that, A locking hook (401) is provided on the cover (40), the locking hook (401) is elastic, and a locking groove (106) is provided on the outer wall of the reaction tank (10). The cover (40) covers the reaction tank (10), and the locking hook (401) is engaged with the locking groove (106).
9. The inverted submersible dosing and stirring device according to any one of claims 1-4, characterized in that, A coupling (70) is connected to the bottom end of the stirring shaft (30), and the motor shaft (201) of the stirring motor (20) extends into the tank (101) and is connected to the coupling (70).
10. The inverted submersible dosing and stirring device according to any one of claims 1-4, characterized in that, A frequency converter is provided outside the reaction tank (10), and the frequency converter is electrically connected to the stirring motor (20).