Multipurpose pump

Abstract

The utility model provides a multipurpose pump, which comprises a casing, a motor, an upper flange and a lower flange, the upper flange and the lower flange are arranged at two ends of the casing, a concentric sleeve is arranged in the casing, an annular space is formed between the outer wall of the concentric sleeve and the inner wall of the casing, and a plurality of spiral blades are circumferentially and uniformly distributed in the annular space. The concentric sleeve and the machine shell are connected together through the spiral blades, and the motor is fixed in the concentric sleeve. One of the upper flange and the lower flange and the machine shell are integrally formed, and the other one of the upper flange and the lower flange and the machine shell are detachably fixed through a screw joint structure. According to the multipurpose pump and the pipeline pump serving as the basic scheme, the multipurpose pump is provided with the upper flange and the lower flange, and the two flanges are suitable for different parts, so that a submersible pump, a cutting pump, a sewage pump and the like with other functions are formed, and the purpose of multiple purposes is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of pump technology, specifically relating to a multi-purpose pump. Background Technology

[0002] In the current water pump market, various types of pumps, such as pipeline pumps, submersible pumps, cutting pumps, and sewage pumps, have relatively limited functions. For example, pipeline pumps are mainly used for transporting liquids within pipeline systems; submersible pumps are suitable for pumping water underwater; cutting pumps focus on cutting and transporting liquids containing impurities; and sewage pumps are specifically used for treating sewage. These pumps each perform a single function and are sold on the market. When users need to use pumps with different functions in different scenarios, they need to purchase multiple types of pumps, which not only increases operating costs but also wastes resources and creates inconvenience for storage and management. Therefore, developing a multi-functional water pump is of significant practical importance. Summary of the Invention

[0003] The purpose of this utility model is to provide a multi-purpose pump to solve the problems of existing water pumps having only one function, high user cost, and waste of resources.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] This utility model discloses a multi-purpose pump, including a housing, a motor, and upper and lower flanges disposed at both ends of the housing. A concentric sleeve is provided inside the housing, and an annular space is formed between the outer wall of the concentric sleeve and the inner wall of the housing. A plurality of helical blades are evenly distributed in a circle within the annular space. The plurality of helical blades connect the concentric sleeve and the housing together, and the motor is fixed inside the concentric sleeve. One of the upper and lower flanges is integrally formed with the housing, while the other is detachably fixed to the housing by means of a screw connection.

[0006] This utility model, through the design of the housing, concentric sleeve, and helical blades, enables the motor to be stably installed inside the housing. At the same time, the arrangement of the annular space and helical blades facilitates the flow and transportation of liquid, laying the foundation for realizing multiple functions and providing good heat dissipation for the motor. The design of one of the upper flange and the lower flange being integrally formed with the housing and the other adopting a screw-connected structure facilitates the installation and disassembly of the pump. When maintenance or replacement of parts is required, the operation can be carried out quickly, improving the convenience of use.

[0007] As a further optimization of the above technical solution, a filter cover is connected to the lower flange, and a water outlet pipe is connected to the upper flange. The motor shaft is sequentially connected to an impeller and a cutting blade. By setting the filter cover, impurities in the liquid can be effectively filtered, preventing impurities from entering the pump and affecting its normal operation. The combination of the impeller and the cutting blade allows this multi-purpose pump to not only transport liquids containing impurities through the impeller but also cut the impurities using the cutting blade, thus realizing the functions of a sewage pump and a cutting pump.

[0008] The water outlet pipe can also be screwed onto the inner wall of the casing. This additional method increases the flexibility of the water outlet pipe connection. Users can choose to connect the water outlet pipe via the upper flange or directly screw it onto the upper inner wall of the casing, depending on their actual needs and installation scenario, making the process convenient and quick.

[0009] As another optimization of the above technical solution, the upper flange is connected to an adapter, and an outer pipe is inserted into the adapter. The outer pipe and the adapter are fixedly connected with adhesive. The adapter and outer pipe facilitate the connection of the multi-purpose pump to different piping systems, further expanding the application scenarios of the multi-purpose pump and enabling it to better meet the needs of different users, realizing diversified applications of the pipeline pump function. Moreover, the combination of insertion and adhesive for fixing the outer pipe and adapter makes installation and connection more convenient and effective.

[0010] The upper flange is connected to an adapter, and an outer pipe is inserted into the adapter. The outer pipe and the adapter are fixedly connected by a hot-melt process.

[0011] The filter cover includes an outer ring, a bottom plate, and a top plate. The outer ring has an array of several water inlet holes, the bottom plate has several water inlet holes, and the top plate has a water passage hole in the middle. The water inlet holes and water inlet holes extend into the internal space enclosed by the outer ring, and the internal space communicates with the water passage hole. The top plate has an annular vertical plate, and the outer wall of the annular vertical plate is fitted and inserted into the inner wall of the casing. The lower part of the impeller is embedded in the water passage hole, and the impeller and the water passage hole are in clearance fit.

[0012] By setting up a filter cover with this structure, a large amount of liquid can enter the internal space of the filter cover from the first water inlet on the outer ring and the second water inlet on the bottom plate. After preliminary filtration, it enters the pump body through the water passage. The lower part of the impeller is embedded in the water passage, and the clearance fit between the impeller and the water passage ensures that the impeller can rotate flexibly in the water passage, reducing friction loss, and also prevents excessive liquid leakage from the gap between the impeller and the water passage, ensuring that the liquid can be efficiently drawn in and transported by the impeller. At the same time, the annular vertical plate fits against the inner wall of the casing, ensuring the stability of the filter cover installation and preventing unfiltered liquid from directly entering the pump body.

[0013] As a further optimization of the above technical solution, a hemispherical flange is provided at the lower end of the concentric sleeve facing the water passage. The hemispherical flange can effectively guide the liquid to enter the annular space more smoothly from the water passage, reduce the liquid flow resistance, and improve the overall working efficiency of the pump.

[0014] The cutting blade is located within the inner space enclosed by the outer ring, and the cutting edge of the blade faces the water inlet hole radially. This design ensures that impurities carried by the liquid are cut and broken up by the cutting blade before entering the pump body, further improving the ability to handle impurities.

[0015] In summary, the beneficial effects of this utility model are:

[0016] Compared with existing technologies, this utility model's multi-purpose pump achieves an organic combination of multi-functional integration and convenient use. The coordinated operation of the concentric sleeve, spiral blades, and hemispherical flange within the casing provides a stable foundation for efficient liquid transportation; the clearance fit between the impeller and the water passage ensures efficient liquid transportation while reducing operating energy consumption. The upper and lower flanges adopt a detachable structure combining integral molding and bolted connection. Its core advantage lies in the ability to quickly replace connected accessories. Users can flexibly switch between multiple functions such as pipeline pump, submersible pump, cutting pump, and sewage pump by changing different accessories according to actual needs, effectively overcoming the limitations of traditional single-function pumps and significantly reducing users' equipment procurement costs and management difficulties. Simultaneously, the specially structured filter cover, compatible cutting blades, and impeller work together to achieve efficient filtration, powerful cutting, and smooth transportation of liquids containing impurities; the diverse connection methods of the outlet pipe and the adapter design to adapt to different pipes further enhance the versatility and practicality of this multi-purpose pump in various scenarios, fully meeting diverse usage needs. Attached Figure Description

[0017] Figure 1 This is a perspective view of the multi-purpose pump of this utility model as a pipeline pump;

[0018] Figure 2 This is a perspective view of the multi-purpose pump of this utility model as a submersible pump, cutting pump, and sewage pump.

[0019] Figure 3 This is a three-dimensional exploded view of the multi-purpose pump of this utility model, which functions as a submersible pump, a cutting pump, and a sewage pump.

[0020] Figure 4 This is a perspective view of the multi-purpose pump of this utility model with an adapter;

[0021] Figure 5 This is a three-dimensional exploded view of the adapter and external pipe of the multi-purpose pump of this utility model;

[0022] Figure 6This is a three-dimensional sectional view of the casing of the multi-purpose pump of this utility model;

[0023] Figure 7 This is a cross-sectional view of the multi-purpose pump of this utility model, which functions as a submersible pump, a cutting pump, and a sewage pump. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] Please see Figures 1 to 7 This utility model provides a multi-purpose pump for use as a pipeline pump, comprising a housing 1, a motor 2, and upper flanges 3 and lower flanges 4 located at both ends of the housing 1. The housing 1 is cast from a high-strength, corrosion-resistant material and has a concentric sleeve 5 inside. The concentric sleeve 5 can be made of stainless steel and formed by precision casting, possessing good strength and corrosion resistance. Of course, the housing 1 can also be made of stainless steel. An annular space 6 is formed between the outer wall of the concentric sleeve 5 and the inner wall of the housing 1. Several spiral blades 7 are evenly distributed circumferentially within the annular space 6. The spiral blades 7 are preferably made of a material with good wear resistance and can be firmly connected to the concentric sleeve 5 and the housing 1 by welding, thus connecting the concentric sleeve 5 and the housing 1 together. This structural design not only ensures the connection strength but also provides good heat dissipation for the motor during operation by utilizing the liquid flow within the annular space, and also makes the water flow in the high-pressure area smoother. The motor 2 is fixed inside the concentric sleeve 5 and is secured with high-strength bolts during assembly to ensure the motor 2 is installed securely. One of the upper flange 3 and the lower flange 4 is integrally formed with the housing 1, while the other is detachably fixed to the housing 1 by a screw connection, which facilitates the installation and disassembly of the pump. When maintenance or replacement of parts is required, the operation can be carried out quickly, improving the convenience of use.

[0026] To achieve the functions of a submersible pump, sewage pump, and cutting pump, a filter cover 8 is connected to the lower flange 4, and a water outlet pipe 9 is connected to the upper flange 3. The motor 2's shaft 10 is sequentially connected to an impeller 11 and a cutting blade 12. The filter cover 8 effectively filters impurities in the liquid, preventing them from entering the pump and affecting its normal operation. The cutting blade 12 and impeller 11 are mounted on the motor 2's shaft 10 via a key connection and bolt fastening (or an interference fit and bolt fastening). This combination of impeller 11 and cutting blade 12 allows the multi-purpose pump to not only transport liquids containing impurities through the impeller 11 but also cut impurities using the cutting blade 12, thus realizing the functions of both a sewage pump and a cutting pump.

[0027] The water outlet pipe 9 can also be screwed onto the inner wall of the housing 1. The inner wall of the housing 1 has internal threads corresponding to the screwing position, and the end of the water outlet pipe 9 has external threads. The two are connected in tandem, and Teflon tape is wrapped around the connection to enhance sealing. This additional connection method increases the flexibility of the water outlet pipe 9 connection. Users can choose to connect the water outlet pipe 9 via the upper flange 3, or directly screw the water outlet pipe 9 onto the upper inner wall of the housing 1, depending on actual needs and installation scenarios, making the process convenient and quick.

[0028] As another optimization of the above technical solution, the upper flange 3 is connected to an adapter 13, and an outer connecting pipe 14 is inserted into the adapter 13. The outer connecting pipe 14 and the adapter 13 are fixedly connected by adhesive. Both the adapter 13 and the outer connecting pipe 14 are injection molded from engineering plastics. The inner wall of the adapter 13 is provided with an annular groove 15. After the outer connecting pipe 14 is inserted, high-strength waterproof adhesive is filled into the groove 15. This combination of insertion and adhesive achieves fixation, making the installation and connection more convenient and effective. It can easily connect the multi-purpose pump to different pipeline systems, further expanding the application scenarios of the multi-purpose pump, enabling it to better meet the needs of different users and realize the diversified application of pipeline pump functions.

[0029] Alternatively, the outer pipe 14 and the adapter 13 can be connected together using a hot-melt process. Both the adapter 13 and the outer pipe 14 are injection molded from high-temperature resistant, high-strength modified polypropylene (PP-R) material. Both have spiral guide grooves designed on their contact surfaces to increase the hot-melt contact area. During assembly, the inner surface of the adapter and the outer surface of the outer pipe are simultaneously heated to 260±5℃ using specialized hot-melt welding equipment. After holding for 20-30 seconds, the adapter is quickly inserted and rotated 1 / 4 turn, allowing the molten material to fully fill the guide grooves and form a uniform weld layer. After cooling, a permanent molecular-level bond is formed. This connection method has the following advantages: 1) High connection strength, with tensile strength reaching over 90% of the base material; 2) Good sealing performance, preventing liquid leakage; 3) Strong chemical corrosion resistance, adaptable to various working media; 4) Excellent high-temperature resistance, with a long-term operating temperature up to 95℃; 5) Quick construction, eliminating the need to wait for adhesive curing, improving installation efficiency. This structural design allows for easy connection of the multi-purpose pump to different piping systems, further expanding the application scenarios of the multi-purpose pump and enabling it to better meet the needs of different users, thus realizing the diversified application of the pipeline pump function.

[0030] The filter cover 8 includes an outer ring 16, a bottom plate 17, and a top plate 18. The outer ring 16 is provided with an array of several water inlets 19, the bottom plate 17 is provided with several water inlets 20, and the top plate 18 is provided with a water passage hole 21 in the middle. The water inlets 19 and 20 extend into the internal space 22 enclosed by the outer ring 16, and the internal space 22 communicates with the water passage hole 21. The top plate 18 is provided with an annular vertical plate 23, and the outer wall of the annular vertical plate 23 is fitted and inserted into the inner wall of the housing 1. The lower part of the impeller 11 is embedded in the water passage hole 21, and the impeller 11 and the water passage hole 21 are in clearance fit. During assembly, the gap between the impeller 11 and the water passage hole 21 is controlled to be between 0.5-1mm through precision machining. This ensures that the impeller 11 can rotate flexibly within the water passage hole 21, reducing frictional loss, and also prevents excessive liquid leakage from the gap between the impeller 11 and the water passage hole 21, ensuring that the liquid can be efficiently drawn in and transported by the impeller 11. At the same time, a sealing strip is provided at the joint between the annular vertical plate 23 and the inner wall of the casing 1, ensuring the stability of the filter cover installation and preventing unfiltered liquid from directly entering the pump body.

[0031] As a further optimization of the above technical solution, a hemispherical flange 24 is provided at the lower end of the concentric sleeve 5 facing the water inlet 21. The surface of the hemispherical flange 24 is polished, which can effectively guide the liquid to enter the annular space 6 more smoothly from the water inlet 21, reduce the liquid flow resistance, and improve the overall working efficiency of the pump. The cutting blade 12 is located in the inner space 22 enclosed by the outer ring 16, and the cutting edge of the cutting blade 12 faces the water inlet 19 in the radial direction. This design allows impurities carried by the liquid to be cut and broken by the cutting blade 12 before entering the pump body, further improving the ability to handle impurities.

[0032] In summary, the multi-purpose pump of this utility model, as a pipeline pump based on the present invention, has an upper flange 3 and a lower flange 4. Different components can be adapted to the two flanges, thereby forming other functions such as submersible pumps, cutting pumps, and sewage pumps, thus achieving the purpose of multi-purpose application.

[0033] The multi-purpose pump provided by the embodiments of this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the technical solution disclosed in this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A multipurpose pump comprising a casing, a motor and upper and lower flanges arranged at the ends of the casing, characterized in that: The housing is equipped with a concentric sleeve, and an annular space is formed between the outer wall of the concentric sleeve and the inner wall of the housing. Several spiral blades are evenly distributed in a circle within the annular space. The spiral blades connect the concentric sleeve to the housing, and the motor is fixed inside the concentric sleeve. One of the upper flange and the lower flange is integrally formed with the housing, while the other is fixed to the housing by a screw connection structure for detachable fixation.

2. A multipurpose pump according to claim 1, characterized in that: The lower flange is connected to a filter cover, the upper flange is connected to a water outlet pipe, and the motor shaft is connected in sequence to an impeller and a cutting blade.

3. A multipurpose pump according to claim 2, characterized in that: The water outlet pipe can also be screwed onto the inner wall of the casing.

4. A multipurpose pump as claimed in claim 1, wherein: The upper flange is connected to an adapter, and an outer pipe is inserted into the adapter. The outer pipe and the adapter are fixedly connected by glue.

5. A multipurpose pump as claimed in claim 1, wherein: The upper flange is connected to an adapter, and an outer pipe is inserted into the adapter. The outer pipe and the adapter are fixedly connected by a hot-melt process.

6. A multipurpose pump as claimed in claim 2, wherein: The filter cover includes an outer ring, a bottom plate, and a top plate. The outer ring has an array of several water inlet holes, the bottom plate has several water inlet holes, and the top plate has a water passage hole in the middle. The water inlet holes and water inlet holes extend into the internal space enclosed by the outer ring, and the internal space communicates with the water passage hole. The top plate has an annular vertical plate, and the outer wall of the annular vertical plate is fitted and inserted into the inner wall of the casing. The lower part of the impeller is embedded in the water passage hole, and the impeller and the water passage hole are in clearance fit.

7. A multipurpose pump as claimed in claim 1, wherein: The concentric sleeve has a hemispherical flange at its lower end facing the water passage.

8. A multipurpose pump as claimed in claim 6, wherein: The cutting blade is located in the inner space enclosed by the outer ring, and the cutting edge of the cutting blade faces the water inlet hole in the radial direction.

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