Sewage lifting pump with cooling function

Abstract

The utility model discloses a sewage lift pump with a cooling function, which belongs to the field of sewage treatment and comprises a motor, a sleeve is sleeved outside the motor, a cooling passage is formed between the inner wall of the sleeve and the outer wall of the motor, one side of the motor is connected with a controller through a connecting component, and one end of the connecting component is clamped between the sleeve and the top end of the motor. The other end is embedded in the controller; a plurality of jet orifices are formed in one side, close to the controller, of the top end of the sleeve; by arranging a plurality of jet orifices, water is jetted to the controller, so that the controller is cooled while the motor is cooled, and the problems of element aging, performance reduction, even damage and the like caused by overheating of the controller are prevented.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment, specifically to a sewage lift pump with cooling function. Background Technology

[0002] Sewage pumps and wastewater lift pumps, as key equipment in modern sewage systems, are widely used in municipal engineering, building drainage, industrial wastewater treatment, and other fields. However, in actual use, these devices face severe heat dissipation challenges. Existing technologies typically achieve heat dissipation by setting up cooling channels around the motor, but this design has significant limitations. First, traditional cooling channels only cool the motor, neglecting the equally important heat dissipation needs of the controller components. As the core control unit of the wastewater lift pump, the controller generates a large amount of heat during operation. If it cannot be dissipated in time, the controller temperature will become too high, leading to problems such as component aging, performance degradation, and even damage.

[0003] Chinese Patent Publication No. CN201802633U, Publication Date: April 20, 2011, discloses a sewage pump with a cooling motor function. The pump includes a water tank with an inlet, a churning device inside the water tank, a control device for controlling the operation of the churning device, and a pumping device. A cooling device is provided on the motor housing, including a crucible sealed on the motor housing. The space inside the crucible and inside the motor housing is used to hold cooling fluid and is connected through at least two convection holes on the motor housing for convection cooling fluid to cool the motor. This sewage pump lacks a controller cooling assembly, which may lead to component aging, performance degradation, or even damage with long-term use. Utility Model Content

[0004] This utility model provides a sewage lift pump with cooling function. By setting several spray nozzles, water is sprayed onto the controller, which cools the motor and the controller at the same time, preventing problems such as component aging, performance degradation or even damage caused by overheating of the controller.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sewage lifting pump with cooling function, including a motor, a sleeve is sleeved on the outside of the motor, a cooling passage is formed between the inner wall of the sleeve and the outer wall of the motor, and one side of the motor is connected to a controller through a connecting component; the top of the sleeve near the controller is provided with several spray ports, and the bottom of the sleeve is provided with several water inlets.

[0006] Preferably, the spray nozzle is located at the top of the sleeve, and the top of the spray nozzle is open. Positioning the spray nozzle at the top of the sleeve ensures that cooling water can be directly sprayed onto the controller surface, improving cooling efficiency. The open top design allows cooling water to spray out smoothly, avoiding uneven spraying or blockage caused by improper opening position.

[0007] Preferably, the spray nozzle is rectangular and oriented towards the controller. The rectangular nozzle design provides a larger spray area, ensuring that the cooling water can evenly cover the controller surface, improving cooling efficiency. Orienting it towards the controller further ensures that the cooling water acts directly on the controller, avoiding waste.

[0008] Preferably, a drain pipe is connected to one side of the bottom end of the sleeve, and the drain pipe bends upward and extends out of the housing. Components such as the motor, sleeve, and controller are all housed inside the housing. One end of the drain pipe is horizontal, and the other end is vertical, with the two connected at a right angle. This drain pipe design effectively guides wastewater out, preventing wastewater accumulation inside the housing and reducing the risk of equipment damage due to water accumulation. Simultaneously, the bent design of the drain pipe prevents cooling water backflow, ensuring the normal operation of the cooling system.

[0009] Preferably, a drain outlet is connected to the top of the drain pipe, and the drain outlet is located outside the casing. Placing the drain outlet outside the casing ensures that sewage can be discharged smoothly, avoids the accumulation of sewage inside the casing, reduces the risk of equipment corrosion, and facilitates sewage discharge and treatment.

[0010] Preferably, water inlets are located at the bottom of both sides of the tank. Positioning the water inlets at the bottom ensures that wastewater can smoothly enter the tank, improving wastewater lifting efficiency. Simultaneously, the inlet placement design reduces the impact of impurities in the wastewater on the equipment, extending its service life.

[0011] Preferably, a blade is provided at the bottom of the motor outside the sleeve. This blade at the bottom of the motor effectively cuts fibrous materials and solid impurities in the sewage, preventing blockages and improving the operating efficiency and reliability of the sewage lift pump.

[0012] Preferably, the connecting component consists of several L-shaped blocks.

[0013] Preferably, the L-shaped block at one end of the connecting component extends between the sleeve and the motor. The L-shaped block design provides a stable connection, ensuring a secure connection between the motor and the controller. This connection method is simple, reliable, and easy to install and maintain.

[0014] Preferably, the L-shaped block at the other end of the connecting component is embedded in the controller slot. Embedding the L-shaped block in the controller slot ensures stable installation of the controller, avoids displacement or damage to the controller due to external forces, and further improves the reliability and safety of the equipment.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a sewage lifting pump with a cooling function. By setting several spray nozzles, water is sprayed onto the controller, which cools the motor and the controller at the same time, preventing problems such as component aging, performance degradation or even damage caused by overheating of the controller. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 for Figure 2 Enlarged view of point A.

[0019] Figure 4 This is an enlarged view of the nozzle of this utility model.

[0020] Reference numerals in the attached drawings: 1: Housing; 2: Drain outlet; 3: Drain pipe; 4: Housing inlet; 5: Motor; 6: Sleeve; 6.1: Spray nozzle; 7: Inlet; 8: Connecting assembly; 9: Controller; 10: Cooling passage. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In wastewater treatment, building drainage, and various scenarios involving wastewater lifting, wastewater lift pumps play a crucial role. However, traditional wastewater lift pumps often face overheating issues during operation, particularly affecting the motor (5) and controller (9). Overheating of the motor (5) reduces its efficiency and can even cause malfunctions; overheating of the controller (9) can lead to component aging, performance degradation, and in severe cases, damage, impacting the stable operation of the entire wastewater lifting system. This invention, a wastewater lift pump with a cooling function, effectively solves this problem through an innovative design concept, providing a more reliable and efficient equipment option for related fields.

[0023] like Figure 1 , Figure 2 and Figure 3As shown, this sewage lift pump mainly consists of a motor 5, a sleeve 6, a controller 9, and a housing 1. The motor 5 serves as the power source, providing the necessary driving force for sewage lifting. The sleeve 6 is tightly fitted around the outside of the motor 5, forming a dedicated cooling channel 10 between the sleeve 6 and the outer wall of the motor 5. This channel is a key structure for cooling the motor 5. One side of the motor 5 is connected to the controller 9 via a connecting assembly 8, ensuring precise control of the motor 5's operation.

[0024] like Figure 4 As shown, several spray nozzles 6.1 are distributed at the top of the sleeve 6 near the controller 9, while several water inlets 7 are provided at the bottom of the sleeve 6. When the sewage lift pump starts working, external cooling water flows into the cooling passage 10 from the water inlets 7 at the bottom of the sleeve 6. As it flows over the outer wall of the motor 5, it absorbs the heat generated by the motor 5, thus cooling the motor 5. Subsequently, the cooling water that has absorbed the heat continues to flow and reaches the spray nozzles 6.1 at the top of the sleeve 6, from which it is sprayed out and directly acts on the surface of the controller 9, thereby cooling the controller 9.

[0025] During operation, motor 5 generates a significant amount of heat due to current flowing through the windings and mechanical friction. If this heat cannot be dissipated promptly, the motor 5's temperature will continue to rise, affecting its performance and lifespan. This lift pump utilizes a cooling passage 10 to circulate cooling water between the outer wall of motor 5 and the inner wall of the sleeve 6. The cooling water has excellent thermal conductivity, quickly absorbing the heat dissipated by motor 5 and maintaining its temperature within a reasonable range. For example, in the sewage lift system of a large commercial complex's basement, where summer ambient temperatures are high, the temperature of the motor 5 in a traditional sewage lift pump often exceeds 80°C after prolonged operation, leading to decreased efficiency and increased energy consumption. However, by using the sewage lift pump with cooling function of this invention, the motor 5's temperature can be stably controlled at around 50°C, effectively improving its operating efficiency and stability.

[0026] The controller 9, as the core component controlling the operation of the motor 5, integrates numerous precision electronic components. During operation, these components generate heat due to current flow and signal processing. Overheating of the controller 9 can lead to performance degradation of the components, such as changes in resistance and capacitor leakage, thereby affecting the control accuracy of the controller 9 over the motor 5, and in severe cases, even damaging the components. This lift pump sprays cooling water, which has absorbed heat from the motor 5, from the cooling passage 10 onto the surface of the controller 9 through a spray port 6.1 located at the top of the sleeve 6. As the cooling water flows and evaporates on the surface of the controller 9, it carries away the heat generated by the controller 9, achieving effective cooling. For example, in an automated sewage lift system of a sewage treatment plant, after prolonged operation, the controller 9's temperature became too high, causing fluctuations in the control signal and affecting the normal start-up and shutdown of the sewage lift pump. After installing the sewage lift pump with cooling function of this invention, the temperature of the controller 9 is effectively controlled, the signal fluctuation problem is solved, and the system operation becomes more stable and reliable.

[0027] like Figure 4 As shown, the spray nozzle 6.1 is located at the top of the sleeve 6, and the top is open. Positioning the spray nozzle 6.1 at the top of the sleeve 6 is significant. Firstly, this position ensures that the cooling water, under the combined action of gravity and water pressure, is directly sprayed onto the surface of the controller 9, maximizing cooling efficiency. If the spray nozzle 6.1 were positioned too low, the cooling water might be obstructed by other components during spraying, failing to effectively reach the surface of the controller 9, thus reducing the cooling effect. Secondly, the top-opening design allows the cooling water to spray out smoothly. The top opening avoids the obstacles that other openings might encounter, such as side openings which could become clogged due to debris accumulation. The top opening effectively prevents this, ensuring the uniformity and continuity of the cooling water spray.

[0028] The nozzle 6.1 adopts a rectangular design and faces the controller 9, a structural design that offers significant cooling advantages. Specifically, the aspect ratio of the rectangular nozzle 6.1 is carefully designed, typically between 3:1 and 5:1, a ratio that maximizes its adaptability to the dimensions of the controller 9. Compared to the traditional circular nozzle 6.1, the rectangular nozzle 6.1 provides a larger spray coverage area with the same opening area, increasing the effective coverage area by approximately 40%-60%. When cooling water is ejected from the rectangular nozzle 6.1, due to the special shape of the outlet cross-section, the cooling water forms a uniform fan-shaped diffusion surface with a diffusion angle of 60°-90°, thus creating a larger cooling coverage area on the surface of the controller 9. This design ensures that the cooling water can uniformly cover the surface of the controller 9, avoiding the cooling dead zones that may occur with the circular nozzle 6.1. Experimental data shows that after adopting the rectangular nozzle 6.1, the surface temperature distribution of the controller 9 is more uniform, and the temperature difference can be controlled within ±2℃, improving cooling uniformity by approximately 30% compared to the circular nozzle 6.1. Meanwhile, the linear edge design of the rectangular nozzle 6.1 facilitates laminar flow cooling, reducing energy loss caused by turbulence and improving cooling water utilization by approximately 25%. Furthermore, the rectangular nozzle 6.1 has higher structural strength, is less prone to deformation, and maintains stable spray performance over a long period, ensuring continuous and effective cooling for the controller 9 under various operating conditions. This design is particularly suitable for cooling applications requiring precise temperature control of the controller 9, providing crucial assurance for improved equipment reliability and extended service life.

[0029] like Figure 2 As shown, the sleeve 6 serves as the carrier of the cooling passage 10, and its structural design directly affects the cooling effect. The sleeve 6 is typically made of materials with good thermal conductivity and corrosion resistance, such as stainless steel or aluminum alloy. Taking stainless steel sleeve 6 as an example, it has high strength and good corrosion resistance, enabling stable operation in the harsh working environment of the sewage lift pump. Simultaneously, stainless steel has a moderate thermal conductivity, effectively transferring the heat dissipated by the motor 5 to the cooling water in the cooling passage 10. The gap between the inner wall of the sleeve 6 and the outer wall of the motor 5 needs to be precisely designed. It cannot be too large, resulting in a slow cooling water flow rate and affecting the cooling effect; nor can it be too small, to avoid increasing the flow resistance of the cooling water and even causing friction between the motor 5 and the sleeve 6. In actual production, through extensive experiments and simulation analysis, a suitable gap range has been determined to ensure the efficient operation of the cooling passage 10.

[0030] like Figure 2As shown, a drain pipe 3 is connected to one side of the bottom end of the sleeve 6, and the drain pipe 3 bends upward and extends into the housing 1. A drain outlet 2 is connected to the top of the drain pipe 3, and the drain outlet 2 is located outside the housing 1. Placing the drain outlet 2 outside the housing 1 ensures smooth drainage of sewage, prevents excessive accumulation of sewage inside the housing, reduces the risk of equipment corrosion, and facilitates sewage discharge and treatment. Components such as the motor 5, sleeve 6, and controller 9 are all housed inside the housing 1. One end of the drain pipe 3 is horizontal, and the other end is vertical, with the two connected at a right angle. This design of the drain pipe 3 has several advantages. First, it effectively guides sewage out, preventing sewage accumulation inside the housing 1. During the operation of the sewage lift pump, sewage continuously enters the housing 1. Without a proper drainage design, sewage may flood components such as the motor 5 and controller 9, causing equipment damage. The right-angle bend design of the drain pipe 3 allows sewage to drain smoothly from the housing 1, reducing the risk of equipment damage due to water accumulation. Second, the bend design of the drain pipe 3 prevents cooling water backflow. In the cooling passage 10, the cooling water may be affected by factors such as water pressure fluctuations during its flow. Without measures to prevent backflow, the cooling water may flow back into the cooling passage 10, affecting the cooling effect. The curved part of the drain pipe 3 can play a certain blocking role, ensuring that the cooling water flows in the predetermined direction and maintaining the normal operation of the cooling system.

[0031] like Figure 2 As shown, the connecting component 8 consists of several L-shaped blocks. One L-shaped block at one end of the connecting component 8 extends between the sleeve 6 and the motor 5, while the other L-shaped block is embedded in the slot of the controller 9. The L-shaped block design is simple and reliable, providing a stable connection between the motor 5 and the controller 9. When the L-shaped block at one end of the connecting component 8 extends between the sleeve 6 and the motor 5, it fits tightly against the surfaces of the motor 5 and the sleeve 6. Through the interaction of friction and mechanical structure, the relative position between the motor 5 and the sleeve 6 is fixed, preventing shaking during operation. Simultaneously, the L-shaped block at the other end of the connecting component 8, embedded in the slot of the controller 9, securely installs the controller 9 in the predetermined position, preventing displacement or damage to the controller 9 due to external forces. In actual installation, the size and shape of the L-shaped blocks are precisely designed to perfectly match the corresponding parts of the motor 5, sleeve 6, and controller 9, facilitating installation and maintenance. For example, at a construction site, installers can quickly install the connecting component 8, significantly shortening the installation time of the sewage lift pump and improving work efficiency.

[0032] like Figure 1As shown, tank body 1 has water inlets 4 at the bottom of both sides and a front inlet on the front. The placement of the water inlets 4 at the bottom of tank body 1 ensures that wastewater can smoothly enter the tank. Under gravity, the wastewater flows naturally into the tank through the water inlets 4, improving wastewater lifting efficiency. Simultaneously, the placement of the water inlets 4 reduces the impact of impurities in the wastewater on the equipment. Since wastewater often contains various solid impurities and fibrous materials, these impurities may cause wear to components such as the motor 5 and blades under the influence of water flow. Placing the water inlets 4 at the bottom of both sides of tank body 1 allows the wastewater to undergo a buffering and settling process before entering the tank body, reducing the direct impact of large particles on the equipment and thus extending its service life.

[0033] A blade is installed at the bottom of the motor 5 outside the sleeve 6. This blade is designed to effectively cut fibrous materials and solid impurities in the sewage. During sewage lifting, fibrous materials such as cloth strips and plastic ropes, as well as solid impurities such as stones and bricks, can easily clog the pump body and pipes, affecting the normal operation of the sewage lift pump. The blade at the bottom of the motor 5 rotates at high speed, driven by the motor, which can chop these fibrous materials and solid impurities, allowing them to pass smoothly through the pump body and pipes, preventing blockages, and improving the operating efficiency and reliability of the sewage lift pump. For example, in an industrial wastewater treatment plant, where the sewage contains a large amount of industrial waste and debris, the frequency of equipment blockage has significantly decreased after using a sewage lift pump with blades. The maintenance cycle has been extended from once a week to once a month, greatly improving production efficiency.

[0034] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A sewage lift pump with cooling function, comprising a motor, characterized in that, A sleeve is fitted on the outside of the motor, and a cooling passage is formed between the inner wall of the sleeve and the outer wall of the motor. One side of the motor is connected to the controller through a connecting component. One end of the connecting component is stuck between the sleeve and the top of the motor, and the other end is embedded in the controller. The top of the sleeve has several spray nozzles facing the controller, and the bottom of the sleeve has several water inlets.

2. A sewage lift pump with cooling function according to claim 1, characterized in that, The injection port is located at the top of the sleeve, and the top of the injection port is open.

3. A sewage lift pump with cooling function according to claim 1 or 2, characterized in that, The injection nozzle is rectangular and oriented towards the controller.

4. A sewage lift pump with cooling function according to claim 1, characterized in that, A drain pipe is connected to one side of the bottom end of the sleeve, and the drain pipe bends upward and extends out of the box.

5. A sewage lift pump with cooling function according to claim 4, characterized in that, A drain outlet is connected to the top of the drain pipe, and the drain outlet is located outside the box.

6. A sewage lift pump with cooling function according to claim 4 or 5, characterized in that, Water inlets are located at the bottom of both sides of the tank.

7. A sewage lift pump with cooling function according to claim 1, characterized in that, The motor has a blade at the bottom of the sleeve.

8. A sewage lift pump with cooling function according to claim 1, characterized in that, The connecting component consists of several L-shaped blocks.

9. A sewage lift pump with cooling function according to claim 1 or 8, characterized in that, The L-shaped block at one end of the connecting component extends between the sleeve and the motor.

10. A sewage lift pump with cooling function according to claim 9, characterized in that, The L-shaped block at the other end of the connecting component is embedded in the controller slot.

Images