Split sewage lift pump structure convenient to disassemble, assemble and carry

By using the inclined design of the buckle assembly and the setting of the sealed storage box, the problem of buckle failure during the transportation of the sewage lifting station is solved, realizing convenient disassembly and assembly and efficient sealing of the equipment, and improving the stability and safety of the equipment.

CN223894553UActive Publication Date: 2026-02-10LEO GRP ZHEJIANG PUMP CO LTD
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Patent Information

Application Number
CN202520596440.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-31
Publication Date
2026-02-10
Estimated Expiration
2035-03-31

AI Technical Summary

Technical Problem

During the transportation of existing sewage lifting stations, the latches are prone to failure, causing the cover to detach from the housing, resulting in equipment damage and sewage leakage, which affects the environment.

Method used

The design employs a snap-fit ​​assembly, which uses the inclined setting of the snap-fit ​​plate and the receiving block to disperse stress and avoid the snap-fit ​​being subjected to force. The force is mainly applied to the box body, and the sealing function is achieved by combining the sealed storage box and the sealing strip.

Benefits of technology

It improves the safety and sealing of the sewage lifting station during handling, reduces the risk of buckle failure, prevents equipment from falling and sewage from leaking, and extends its service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a split sewage lift pump structure convenient to disassemble, assemble and carry, which belongs to the field of sewage treatment, and comprises a box body and a box cover, a sealed storage box is arranged between the box body and the box cover, the sealed storage box is provided with a flange towards the outer side along the top edge, and the flange is arranged on the top edge of the box body; a sealing strip is arranged between the turned-over edge and the box body and is tightly attached to the top edge of the box body; clamping plates inclining outwards are arranged on the lower surfaces of the two sides of the box cover, clamping blocks are arranged at the bottom ends of the inner sides of the clamping plates, and bearing blocks are arranged at the top ends of the two side faces of the box body. By arranging the buckle assembly, assembling and maintaining are facilitated, buckles are not stressed in the carrying process, force only acts on the box body, the buckle failure risk is reduced, and the box body is prevented from falling down and being damaged.
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Description

Technical Field

[0001] This utility model belongs to the field of sewage treatment, and is a split sewage pump structure that is easy to disassemble and transport. Background Technology

[0002] Most existing sewage lifting stations employ a cover and tank structure, secured by seals and fasteners. These fasteners typically use clips, a design that presents several problems in practical use. First, the clips have limited strength; during handling, the main stress points are concentrated on the clips and the cover. Because the tank itself has weight, its gravity exerts significant pressure and shear force on the cover, easily causing the clips to deform or break. If the clips fail, the cover may detach from the tank, leading to the tank tipping over and breaking, damaging the equipment and potentially causing sewage leakage and environmental pollution.

[0003] Chinese Patent Publication No. CN206706940U, Publication Date: December 5, 2017, discloses a patent entitled "Multifunctional Sewage Lifting Device". The multifunctional sewage lifting device includes a tank, an inner liner, and a cover 103. The inner liner is assembled inside the tank and secured by snaps on the plastic outer shell of the tank. The cover is installed on top of the plastic outer shell and is secured by its own snaps onto the outer steps of the plastic outer shell. Simultaneously, an inner pressure strip on the cover presses against the inner liner support, further securing the inner liner to the plastic outer shell. However, during transport, the snaps are subjected to stress, which can easily lead to snap failure, causing the cover to detach from the tank, resulting in the tank falling and breaking. This not only damages the equipment but may also cause sewage leakage and environmental pollution. Utility Model Content

[0004] This utility model provides a split-type sewage pump structure that is easy to disassemble and transport. By setting up a buckle assembly, it is convenient for assembly and maintenance, so that the buckle is not subjected to force during transportation, and the force is only applied to the housing, reducing the risk of buckle failure and preventing the housing from falling and breaking.

[0005] A further objective of this invention is to achieve a good sealing function while satisfying the requirements of easy disassembly and assembly by setting a sealed storage box and a sealing strip.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a split-type sewage pump structure that is easy to disassemble and transport, including a housing and a cover. The sides of the housing and the cover are connected by several snap-fit ​​components, each including a snap-fit ​​plate and a receiving block. The lower surfaces of both sides of the cover are provided with outwardly inclined snap-fit ​​plates, and the snap-fit ​​plates have snap-fit ​​blocks at their inner bottom ends. The top of both sides of the housing are provided with receiving blocks, and the outer bottom end of each receiving block has a trapezoidal protrusion. A sealed storage box is provided between the housing and the cover. The sealed storage box has a flange extending outward from its top edge, located on the top edge of the housing. A sealing strip is provided between the flange and the housing, fitting snugly against the top edge of the housing, and has a V-shaped block on its inner side. By setting up the snap-fit ​​components, assembly and maintenance are facilitated, ensuring that the snaps are not subjected to force during transport, with the force acting only on the housing, reducing the risk of snap failure and preventing the housing from falling and breaking.

[0007] Preferably, the lower surface of the trapezoidal protrusion contacts the upper surface of the snap-fit ​​block. This contact method ensures a tight fit between the snap-fit ​​block and the trapezoidal protrusion, enhancing the stability of the connection and reducing loosening caused by poor contact.

[0008] Preferably, the locking block is a right-angled trapezoid with the hypotenuse at the bottom. The locking plate is tilted towards the side away from the receiving plate. The right-angled trapezoidal design allows the locking block to better distribute stress when under load, avoiding damage caused by stress concentration. The tilted locking plate design also provides space for the operator's hands during handling, allowing the operator to lift the box onto the receiving block, ensuring that the force is mainly applied to the box body, rather than the latch.

[0009] Preferably, the receiving block has a rectangular longitudinal section, and after snapping, it is located inside the snapping block and does not contact it. The rectangular receiving block design provides a larger contact area, enhancing the overall stability of the structure. The non-contact design after snapping avoids wear caused by friction, extending the service life of the snap-fit ​​assembly.

[0010] Preferably, the inclined side of the trapezoidal protrusion is located at the top, and the lower base is placed on the receiving block. The height of the trapezoidal protrusion and the bottom surface of the receiving block are on the same horizontal plane. This design makes the trapezoidal protrusion and the receiving block more compact in structure, further enhancing the stability of the connection. At the same time, the design of being on the same horizontal plane ensures uniform force distribution, avoiding uneven force distribution caused by structural unevenness.

[0011] Preferably, the trapezoidal protrusion and the locking block are positioned opposite each other, with their heights in contact. Because the locking plate is angled, during handling, the operator's hands will only be on the receiving block of the box, meaning only the box body bears the force, while the latches and lid are not. This relative arrangement ensures a tight fit between the locking block and the trapezoidal protrusion, while the angled locking plate design concentrates the force on the box body during handling, effectively preventing damage to the latches and lid due to stress.

[0012] Preferably, the trapezoidal protrusion's upper bottom surface is angled outwards. This angled upper bottom surface design better guides the direction of force, ensuring that the force primarily acts on the housing during handling, further reducing the stress on the latching components and lowering the risk of latch failure.

[0013] Preferably, the inclination angle of the upper bottom surface of the trapezoidal protrusion is approximately the same as the inclination angle of the snap-fit ​​plate.

[0014] Preferably, water inlet components are provided at the bottom of both sides of the tank, and a drainage component is provided below the receiving block on one side. This layout design makes water inlet and drainage smoother, avoids water accumulation in the tank, improves sewage lifting efficiency, and reduces equipment damage caused by water flow impact.

[0015] Preferably, the tank has a water inlet assembly on one side and a drain outlet on the cover. The design of the water inlet assembly better guides water flow into the tank, improving inlet efficiency. Dual-port drainage provides multi-point drainage, offering high flexibility to adapt to various drainage needs, with redundancy to handle complex drainage environments. In case of failure, the other drain outlet can be inspected through a viewing window, facilitating maintenance.

[0016] Preferably, the flange is an inverted U-shape, with one end positioned on the inner side of the top edge of the box and the other end on the outer side of the top edge. One end of the sealing strip is positioned on the outer side of the top edge of the box, and the other end on the inner side. Several fixing grooves are provided circumferentially along the flange, with fixing protrusions within each groove. Several fixing blocks are provided circumferentially along the top edge of the box, with the fixing protrusions embedded in the fixing holes of the fixing blocks. The sealed storage box is securely fixed to the box via the fixing protrusions. The V-shaped block of the sealing strip is positioned between the inner flange and the box, with one end of the V-shaped block engaging inside the sealed storage box. Several sensor assemblies are located on the outer side of the sealed storage box. A motor is located inside the sealed storage box, with handles on both sides of the top of the motor. The handles facilitate inspection and lifting by the operator.

[0017] The beneficial effects of this utility model are as follows: This utility model provides a split-type sewage pump structure that is easy to disassemble and transport. By setting a buckle assembly, it facilitates assembly and maintenance, so that the buckle is not subjected to force during transportation, and the force is only applied to the housing, reducing the risk of buckle failure and preventing the housing from falling and breaking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a cross-sectional view of the present invention.

[0020] Figure 3 for Figure 2 Enlarged view of point A.

[0021] Figure 4 This is a schematic diagram of the structure of the present invention with the lid removed.

[0022] Reference numerals in the attached diagram: 1: Box body; 1.1: Water inlet assembly; 1.2: Front water inlet assembly; 1.3: Drainage assembly; 1.4: Receiving block; 1.5: Trapezoidal protrusion; 1.6: Fixing block; 2: Box cover; 2.1: Drain outlet; 2.2: Snap-fit ​​plate; 2.3: Snap-fit ​​block; 3: Motor; 4: Sealed storage box; 4.1: Flanged edge; 4.2: Fixing protrusion; 4.3: Fixing groove; 5: Sealing strip; 6: Handle. Detailed Implementation

[0023] 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.

[0024] In fields such as sewage treatment, construction, and municipal engineering, sewage lift pumps are key equipment, and their portability, maintainability, and operational stability directly affect project efficiency and cost. Traditional sewage lift pumps are mostly one-piece structures, which suffer from problems such as difficult handling, complex maintenance, and easily damaged fasteners. The split sewage lift pump structure provided by this utility model, through an innovative fastener component design, achieves convenient disassembly and assembly, safe handling, and efficient maintenance, providing a solution to the shortcomings of existing technologies. This utility model uses a permanent magnet sewage lifter, a device specifically designed for discharging sewage from households or small commercial establishments. This product combines the high efficiency and energy-saving characteristics of a permanent magnet motor with sewage treatment technology, effectively treating household sewage, grey water, rainwater, and domestic wastewater. It is suitable for locations without natural drainage slopes, such as basements, bathrooms, kitchens, and laundry rooms, helping to lift accumulated water or sewage from low-lying areas to municipal sewage pipes. It is applicable to basement drainage, renovated bathrooms and kitchens, laundry room drainage, renovation of small household sewage systems, small commercial establishments, holiday homes or mobile homes, outdoor facilities, rainwater drainage systems, and auxiliary equipment for sewage treatment systems.

[0025] like Figure 1As shown, this split-type sewage pump structure mainly consists of two parts: the housing 1 and the housing cover 2. An intermediate shell is located in the middle. The housing 1 serves as the main body for sewage storage and lifting, and its material is typically high-strength, corrosion-resistant engineering plastics or metal. Taking a common sewage treatment project as an example, if the sewage contains a large amount of corrosive substances, such as acidic or alkaline sewage, then using a corrosion-resistant engineering plastic housing 1 can effectively resist the erosion of the sewage and extend the service life of the housing 1. The housing 1 has a uniformly distributed wall thickness and an internal reinforcing mesh to ensure compressive strength while reducing its weight.

[0026] like Figure 1 As shown, the cover 2 is used to seal the tank body 1, preventing sewage overflow and debris from entering. The tank body 1 and the cover 2 are connected on both sides by several carefully designed snap-fit ​​components. In this embodiment, two snap-fit ​​components are preferably provided on each side. The snap-fit ​​components include a receiving block 1.4 for the tank body 1 and a snap-fit ​​plate 2.2 for the cover 2. These snap-fit ​​components are key to enabling convenient disassembly, assembly, and safe handling of the separate sewage pump. The snap-fit ​​components facilitate handling and installation / inspection. In case of malfunction, the quick-release cover 2 can be quickly removed, and the entire motor 3 can be easily lifted out for cleaning. The cover 2 is precisely sized to match the tank body 1, and waterproof strips are provided on the edges to form a sealed cavity.

[0027] like Figure 1 and Figure 2 As shown, the lower surfaces of both sides of the cover 2 are provided with outwardly inclined snap-fit ​​plates 2.2. This inclined design has multiple benefits. During actual handling, it provides sufficient space for the operator's hands. For example, when the operator needs to move the sewage pump, they can easily place their hands on the receiving blocks 1.4 on both sides of the cover 1 without being obstructed by the snap-fit ​​plates 2.2. The snap-fit ​​plates 2.2 have snap-fit ​​blocks 2.3 at their inner bottom ends. The snap-fit ​​blocks 2.3 are right-angled trapezoids with their hypotenuses at the bottom. This right-angled trapezoidal design allows the snap-fit ​​blocks 2.3 to evenly distribute the force they bear when under stress, avoiding stress concentration at a single point and effectively preventing damage caused by stress concentration.

[0028] like Figure 3As shown, the top of both sides of the box 1 are provided with receiving blocks 1.4, and the longitudinal section of the receiving blocks 1.4 is rectangular. The rectangular design provides a large contact area for the receiving blocks 1.4, enhancing the stability of the entire structure. A trapezoidal protrusion 1.5 is provided on the outer side of the bottom end of the receiving block 1.4. The hypotenuse of the trapezoidal protrusion 1.5 is located at the top, and its lower base is placed on the receiving block 1.4. Furthermore, the height of the trapezoidal protrusion 1.5 and the bottom surface of the receiving block 1.4 are on the same horizontal plane. This structural design makes the connection between the trapezoidal protrusion 1.5 and the receiving block 1.4 more compact, further improving the stability of the connection. At the same time, the design of being on the same horizontal plane ensures that the force is evenly distributed throughout the structure, avoiding uneven stress caused by structural irregularities.

[0029] like Figure 1 As shown, the lower surface of the trapezoidal protrusion 1.5 contacts the upper surface of the snap-fit ​​block 2.3, ensuring a tight fit between them. During actual assembly, when the cover 2 is connected to the body 1, the snap-fit ​​block 2.3 precisely aligns with the trapezoidal protrusion 1.5, forming a stable connection. This tight fit not only enhances the stability of the connection but also reduces loosening caused by poor contact. For example, in a temporary sewage treatment facility at a construction site, frequent equipment handling and use can easily lead to the cover 2 loosening or even falling off if the snap-fit ​​assembly is unstable. The snap-fit ​​assembly of this invention effectively avoids such problems through its tight fit.

[0030] like Figure 1 As shown, the trapezoidal protrusion 1.5 and the snap-fit ​​block 2.3 are positioned opposite each other, with their heights in contact. Because the snap-fit ​​plate 2.2 is angled, during transport, the operator's hands will only be on the receiving block 1.4 of the housing 1. At this time, only the housing 1 bears the force, while the snap-fit ​​and the cover 2 are not. This design cleverly concentrates the force during transport onto the housing 1, effectively preventing damage to the snap-fit ​​and cover 2 due to stress. Taking the routine equipment maintenance of a municipal wastewater treatment plant as an example, when workers move the sewage pump, they only need to hold the receiving blocks 1.4 on both sides of the housing 1, without worrying about the stress on the snap-fit ​​and cover 2, greatly improving the safety and convenience of transport.

[0031] like Figure 3As shown, the upper bottom surface of the trapezoidal protrusion 1.5 is inclined outwards, and the inclination angle is approximately the same as that of the snap-fit ​​plate 2.2. This inclination angle design better guides the direction of force. During handling, the force acts more concentratedly on the housing 1 along the upper bottom surface of the inclined trapezoidal protrusion 1.5 and the snap-fit ​​plate 2.2, further reducing the stress on the snap-fit ​​assembly and lowering the risk of snap-fit ​​failure. For example, in some small sewage treatment plants that require frequent handling of the sewage pump, after long-term handling operations, the snap-fit ​​assembly with the inclination angle design of this utility model has a failure probability reduced by approximately 30% compared to the traditional structure.

[0032] like Figure 2 , Figure 3 and Figure 4 As shown, a sealed storage box 4 is provided between the box body and the box lid. The sealed storage box 4 has a flange 4.1 extending outward from its top edge, which is located on the top edge of the box body. A sealing strip 5 is provided between the flange 4.1 and the box body, and the sealing strip 5 is set tightly against the top edge of the box body, with a V-shaped block on its inner side. The flange 4.1 is an inverted U-shape, with one end located on the inner side of the top edge of the box body and the other end located on the outer side of the top edge of the box body. One end of the sealing strip 5 is located on the outer side of the top edge of the box body, and the other end is located on the inner side of the top edge of the box body. The V-shaped block of the sealing strip 5 is located between the inner flange 4.1 and the box body, with one end of the V-shaped block engaging inside the sealed storage box 4. The flange 4.1 has several fixing grooves 4.3 along its circumference, and fixing protrusions 4.2 are provided within the fixing grooves 4.3. Several fixing blocks 1.6 are provided along the circumference at the top edge of the box body 1, and the fixing protrusions 4.2 are embedded in the fixing holes of the fixing blocks 1.6. The sealed storage box 4 is securely fixed to the housing via a fixing protrusion 4.2. Both the fixing hole and the fixing protrusion are rectangular, with the size of the fixing protrusion 4.2 being smaller than the fixing hole. Several sensor assemblies are located on the outside of the sealed storage box 4. A motor 3 is housed inside the sealed storage box 4, with handles 6 on both sides of the top of the motor 3. The handles 6 facilitate inspection and lifting by the operator. The sealed storage box 4 and motor 3 feature a fully enclosed design, supporting submersible installation. It can still operate normally even if water enters the pit. The display screen is potted with adhesive, and the display screen, controller, and sensors are integrated into a single sealed storage box 4.

[0033] The motor 3 in this device is an all-steel permanent magnet motor 3, specifically a 50E70 permanent magnet motor 3, with a starting torque 2-3 times the rated torque, providing stronger cutting force during startup or cutting. The efficiency of permanent magnet motors is typically around 90%, while traditional induction motors are usually 70%-80%. This advantage allows the sewage lifting station to significantly reduce energy consumption and save on electricity costs during long-term operation. The magneto is easily integrated with frequency converters, enabling more precise speed control and flow regulation. The speed can be automatically adjusted according to sewage level, flow rate, and usage requirements, improving the overall working efficiency of the sewage lifting station. Before starting sewage discharge, the motor reverses direction in advance to prevent entanglement. In case of blockage, the motor can reverse to remove foreign objects, preventing malfunctions caused by blockage. The bottom is equipped with a bidirectional full-circumference blade with a 360-degree full-edge design, allowing cutting even in reverse. A multi-sensor redundancy design is included: normal operation is monitored by a pressure sensor; when the pressure sensor fails, a backup Hall effect float sensor provides temporary protection. A capacitive water sensor serves as an alarm—it can also provide temporary protection in the event of a complete unit failure. If water enters the PCB, the electrode sensor on the PCB will report a water ingress fault and cut off the power.

[0034] like Figure 2 As shown, water inlet components 1.1 are located at the bottom of both sides of the tank 1. This layout design allows sewage to enter simultaneously from both sides of the bottom of the tank 1. In actual sewage lifting processes, this avoids water accumulation within the tank 1, ensuring smoother water intake. For example, when treating large quantities of sewage containing silt and other impurities, the side-inlet design allows for a relatively uniform water flow within the tank 1, reducing the likelihood of silt accumulation in any particular area and thus improving sewage lifting efficiency. Simultaneously, this design also reduces equipment damage caused by water flow impact. Because the water flow is more dispersed upon entering the tank 1, the impact force on the internal structure of the tank 1 is relatively reduced.

[0035] One side of the tank 1 is equipped with a water inlet assembly 1.2, which typically employs a special flow guiding design. This design effectively guides water flow into the tank 1, improving inlet efficiency. For example, in wastewater treatment projects with high inlet velocity requirements, the water inlet assembly 1.2 optimizes the water flow path, increasing the inlet velocity by approximately 20% compared to conventional inlet methods. Simultaneously, the water inlet assembly 1.2 also performs preliminary filtration and rectification of the incoming wastewater, reducing the impact of large particulate impurities on subsequent equipment.

[0036] like Figure 2As shown, a drainage component 1.3 is located below the receiving block 1.4 on one side of the tank 1. The position of the drainage component 1.3 is designed to match the overall structure of the tank 1 and the direction of water flow. After being lifted within the tank 1, sewage can be smoothly discharged through the drainage component 1.3. The drainage component 1.3 is typically equipped with a check valve or similar device to prevent sewage backflow. In some low-lying areas, if there is no check valve when the sewage lift pump stops working, sewage can easily flow back into the tank 1, affecting subsequent work efficiency. The drainage component 1.3 of this invention effectively avoids this situation by incorporating a check valve. Furthermore, the pipe diameter and internal structure of the drainage component 1.3 are carefully designed to ensure smooth drainage, reduce water flow resistance, and further improve sewage lifting efficiency.

[0037] The cover 2 has a drain port 2.1. While seemingly a simple design, drain port 2.1 plays a crucial role in practical applications. It features dual outlets, multi-point drainage, high flexibility, adaptability to various drainage needs, and redundancy to handle complex drainage environments. In case of failure, the other drain port 2.1 can be inspected through a viewing window, facilitating maintenance.

[0038] Assembly Process: When assembling this split-type sewage pump, first place the housing 1 on a stable workbench. Then, the operator holds the housing cover 2 and aligns the snap-fit ​​plates 2.2 on both sides of the housing cover 2 with the receiving blocks 1.4 on both sides of the housing 1. The outward tilt of the snap-fit ​​plates 2.2 and the relative arrangement of the trapezoidal protrusions 1.5 and 2.3 make the alignment process easier. Next, slowly lower the housing cover 2, allowing the snap-fit ​​blocks 2.3 to gradually contact the trapezoidal protrusions 1.5. During this contact process, the operator can gently press the housing cover 2 to ensure a tight fit between the snap-fit ​​blocks 2.3 and the trapezoidal protrusions 1.5. Due to the design of the lower surface of the trapezoidal protrusions 1.5 and the upper surface of the snap-fit ​​blocks 2.3, they can quickly find their positions and form a stable connection. The entire assembly process is simple and quick, shortening the assembly time compared to traditional sewage pump assembly methods.

[0039] Handling Process: When moving the sewage pump, the operator grips the lower surface of the receiving blocks 1.4 on both sides of the housing 1 with both hands. Because the longitudinal section of the receiving blocks 1.4 is rectangular, it provides a large gripping area, making it easy for the operator to apply force. During handling, due to the inclined design of the locking plate 2.2, the operator's hands will not interfere with the locking plate 2.2. At this time, the force is only applied to the housing 1, and the buckles and housing cover 2 are not subjected to force. For example, at a municipal engineering construction site, workers need to frequently move the sewage pump to different work areas. Using the sewage pump structure of this utility model, workers can easily move it without worrying about damage to the buckles and housing cover 2 due to force, greatly improving work efficiency.

[0040] 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 split-type sewage pump structure that is easy to disassemble and transport, characterized in that, It includes a box body and a box lid, with a sealed storage box between the box body and the box lid. The sealed storage box has a flange along the top edge outwards, and the flange is located on the top edge of the box body. A sealing strip is provided between the flange and the box body, and the sealing strip is set close to the top edge of the box body; The lower surfaces of both sides of the lid are provided with outwardly inclined snap-fit ​​plates, and the snap-fit ​​plates have snap-fit ​​blocks at the bottom inner side. The top of both sides of the box body are provided with receiving blocks.

2. The modular sewage pump structure for easy disassembly and transportation according to claim 1, characterized in that, The bottom outer side of the receiving block is provided with a trapezoidal protrusion, the lower surface of the trapezoidal protrusion is in contact with the upper surface of the snap-fit ​​block, and the snap-fit ​​block is trapezoidal.

3. The modular sewage pump structure for easy disassembly and transportation according to claim 1, characterized in that, The flange is an inverted U-shape, with one end set on the inner side of the top edge of the box and the other end set on the outer side of the top edge of the box. The flange has several fixing grooves along the circumference, and fixing protrusions are provided in the fixing grooves.

4. The modular sewage pump structure for easy disassembly and transportation according to claim 3, characterized in that, One end of the sealing strip is set on the outer side of the top edge of the box, and the other end is set on the inner side of the top edge of the box. Several fixing blocks are provided around the top of the box, and the fixing protrusions are embedded in the fixing holes of the fixing blocks.

5. The modular sewage pump structure for easy disassembly and transportation according to claim 2, characterized in that, The trapezoidal protrusion has its sloping side at the top and its bottom surface on the receiving block. The receiving block has a rectangular longitudinal section. After snapping, it is located inside the receiving block and does not contact the receiving block.

6. A modular sewage pump structure for easy disassembly and transportation according to claim 1 or 5, characterized in that, The trapezoidal protrusion and the snap-fit ​​block are arranged opposite each other and abut against each other, with the upper bottom surface of the trapezoidal protrusion inclined outward.

7. A modular sewage pump structure for easy disassembly and transportation according to claim 1 or 4, characterized in that, The sealing strip has a V-shaped block on the inside. The V-shaped block is located between the inner flange and the box body, and one end of the V-shaped block is snapped into the sealed storage box.

8. The modular sewage pump structure for easy disassembly and transportation according to claim 5, characterized in that, The inclination angle of the top surface of the trapezoidal protrusion is the same as that of the snap-fit ​​plate, and several sensor components are provided on the outside of the sealed storage box.

9. The modular sewage pump structure for easy disassembly and transportation according to claim 1, characterized in that, Water inlet components are provided at the bottom of both sides of the tank, a drainage component is provided below the receiving block on one side, a water inlet component is provided on one side of the tank, and a drain outlet is provided on the tank cover.

10. The modular sewage pump structure for easy disassembly and transportation according to claim 1, characterized in that, The sealed storage box contains a motor, and there are handles on both sides of the top of the motor.

Citation Information

Patent Citations

  • Multifunctional sewage lifter

    CN206706940U