Modular assembled water pump and modular multi-stage integrated water pump

Abstract

The present invention discloses a modular assembled water pump and a modular multi-stage connected water pump, comprising an upper cover, a main body module and a lower cover; the upper cover has an external water inlet; the upper cover is provided with an upper cover assembly part; the main body module comprises a shell, a rotor, a rotor seat, an impeller and a stator; the shell has an internal water inlet and an internal water outlet, and the shell is provided with a containing cavity; the shell is provided with upper and lower assembly parts of the main body; the lower cover has an external water outlet, and the lower cover is provided with a lower cover assembly part; when more than two main body modules are provided, a connecting seat is also included; the connecting seat is provided with an upper assembly part of the connecting seat and a lower assembly part of the connecting seat, and the connecting seat has a connecting water inlet and a connecting water outlet and is connected to each other; in this way, by designing the water pump as the upper cover, the main body module, the lower cover and the connecting seat, a corresponding number of main body modules are selected, and the required water pump is assembled, the manufacturing process of the component modules of several water pumps with different power consumptions is ingeniously generalized, so as to better control the production design and manufacturing costs.

Description

Technical Field

[0001] The present invention relates to the field of pump technology, in particular to a modular assembled water pump and a modular multi-stage connected water pump. Background Art

[0002] A water pump usually has a shell and a rotor, a rotor seat, an impeller, and a stator arranged in the shell; the shell has a water inlet and a water outlet, and a receiving cavity is arranged inside the shell, and the water inlet and the water outlet are connected to the receiving cavity; the water pump introduces external water into the interior of the water pump through the water inlet, and finally reaches the water outlet for delivery.

[0003] Existing water pumps are designed with different power consumption according to different needs, which makes it difficult to produce them in large quantities, which is not conducive to controlling the production design and production costs. In addition, the heat dissipation performance of existing water pumps is not ideal, which is not conducive to ensuring the performance, safety factor and service life of the water pumps.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Summary of the invention

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a modular assembled water pump and a modular multi-stage connected water pump. The water pump is designed to be composed of an upper cover, a main body module, a lower cover and a connecting seat. According to the actual power consumption requirements of the water pump, a corresponding number of main modules are selected to assemble the required water pump. The manufacturing process of the component modules of several water pumps with different power consumptions is cleverly standardized, so that mass production can be achieved, thereby better controlling the production design and manufacturing costs, and is also beneficial to the management and control of process quality.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A modular assembled water pump, comprising an upper cover, a main body module and a lower cover; wherein:

[0008] The upper cover has an external water inlet; the lower end of the upper cover is provided with an upper cover assembly part;

[0009] The main body module includes a shell and a rotor, a rotor seat, an impeller, and a stator installed in the shell; the shell has an inner water inlet and an inner water outlet, and a receiving cavity is arranged inside the shell, the inner water inlet and the inner water outlet are connected to the receiving cavity, the rotor is rotatably arranged on the rotor seat, and the impeller rotates with the rotor; the upper and lower ends of the shell are respectively provided with a main body upper end assembly part and a main body lower end assembly part;

[0010] The lower cover has an outflow outlet, and the upper end of the lower cover is provided with a lower cover assembly part;

[0011] When one main module is provided, the upper cover is detachably assembled to the upper end assembly part of the main body of the main module through the upper cover assembly part, and the external water inlet is connected to the internal water inlet; the lower cover is detachably assembled to the lower end assembly part of the main body of the main module through the lower cover assembly part, and the external water outlet is connected to the internal water outlet.

[0012] A modular multi-stage integrated water pump, comprising an upper cover, a main body module and a lower cover; wherein:

[0013] The upper cover has an external water inlet; the lower end of the upper cover is provided with an upper cover assembly part;

[0014] The main body module includes a shell and a rotor, a rotor seat, an impeller, and a stator installed in the shell; the shell has an inner water inlet and an inner water outlet, and a receiving cavity is arranged inside the shell, the inner water inlet and the inner water outlet are connected to the receiving cavity, the rotor is rotatably arranged on the rotor seat, and the impeller rotates with the rotor; the upper and lower ends of the shell are respectively provided with a main body upper end assembly part and a main body lower end assembly part;

[0015] The lower cover has an outflow outlet, and the upper end of the lower cover is provided with a lower cover assembly part;

[0016] When more than two main modules are provided, more than one connecting seat is also included, and the number of the main modules is one more than the connecting seat; the upper and lower ends of the connecting seat are respectively provided with an upper end assembly part of the connecting seat and a lower end assembly part of the connecting seat, and the upper and lower ends of the connecting seat are respectively provided with a connecting water inlet and a connecting water outlet and are connected to each other; the upper cover is detachably assembled to the upper end assembly part of the main body module on the uppermost side through the upper cover assembly part, and the external water inlet is connected to the internal water inlet of the uppermost main body module; the connecting seat is assembled on two adjacent main modules The connecting seat upper end assembly part of the connecting seat is detachably assembled to the main body lower end assembly part of the main body module on the upper side, and the connecting seat lower end assembly part of the connecting seat is detachably assembled to the main body upper end assembly part of the main body module on the lower side. The connecting water inlet is connected to the inner water outlet of the main body module on the upper side, and the connecting water outlet is connected to the inner water inlet of the main body module on the lower side. The lower cover is detachably assembled to the main body lower end assembly part of the lowermost main body module through the lower cover assembly part, and the outer water outlet is connected to the inner water outlet of the lowermost main body module.

[0017] As a preferred solution, a nut is embedded in the connecting seat, and the shell, upper cover and lower device of the main module are all provided with connecting holes; a first screw is passed through the corresponding connecting hole at the top of the upper cover and then adapted downward to be positioned in the nut; and a second screw is passed through the corresponding connecting hole at the bottom end of the lower cover and then adapted upward to be positioned in the nut.

[0018] As a preferred solution, a first lug is protruding from the outer side of the shell of the main module, and a second lug is protruding from the outer side of the lower cover; a side cover plate is also provided, and the side cover plate is assembled on the first lug and the second lug to enclose a wiring cavity, the wiring cavity has a first wire passing hole connected to the outside, and the shell of the main module is provided with a second wire passing hole; a cable is also provided to pass through the second wire passing hole to be connected to the stator.

[0019] As a preferred solution, the upper and lower ends of the side cover plate are respectively extended toward the side where the lugs are located with upper and lower buckle plates, and buckle points are provided on the upper and lower buckle plates. The upper end of the first lug of the upper main body module is provided with a first buckle groove, and the lower end of the second lug is provided with a second buckle groove. The upper buckle plate of the side cover plate is adapted to the upper end of the first lug of the upper main body module, and its buckle point is adapted to the first buckle groove; the lower buckle plate is adapted to the lower end of the second lug of the lower cover, and its buckle point is limited to the second buckle groove.

[0020] As a preferred embodiment, the shell comprises an outer shell and an inner shell integrally connected to the inner wall of the outer shell; the inner shell has a tapered wall which is gradually enlarged from top to bottom and a second cylindrical wall connected to the lower end of the tapered wall, the outer periphery of the tapered wall is connected to the inner wall of the outer shell and a plurality of through holes are provided at the connection part; a first channel is formed between the second cylindrical wall and the outer shell; the accommodating cavity is formed in the area enclosed by the first cylindrical wall, the stator is installed on the outer side of the first cylindrical wall, and the first channel is arranged around the outer side of the stator, the through hole is connected to the first channel, and the lower end of the first channel is connected to the corresponding outflow outlet of the lower cover or the connecting water inlet of the connecting seat;

[0021] Furthermore, a second channel is formed between the rotor and the inner side of the first cylindrical wall, and the upper and lower ends of the second channel are connected to the inner water inlet and the inner water outlet respectively.

[0022] As a preferred solution, the rotor has a rotating shaft, a graphite sleeve and a ceramic gasket, the graphite sleeve is sleeved on the outer periphery of the rotating shaft, the ceramic gasket is respectively located at the upper and lower ends of the graphite sleeve, and the rotor seat is sleeved on the outer periphery of the graphite sleeve.

[0023] As a preferred solution, a vertically penetrating gap is provided inside the shell wall of the outer shell, and the gap is arranged around the periphery of the stator.

[0024] As a preferred solution, the upper end of the shell of the main module and the upper cover, as well as the lower end of the shell of the main module and the lower cover, are positioned by means of positioning protrusions and positioning grooves, and the positioning protrusions can be detachably extended into corresponding positioning grooves.

[0025] As a preferred solution, the upper end periphery of the connecting seat is recessed downwardly to form a recess lower than the connecting water inlet.

[0026] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0027] The main method is to design the water pump into an upper cover, a main module, a lower cover and a connecting seat. According to the actual power consumption requirements of the water pump, the corresponding number of main modules are selected, and the required water pump is assembled. The required head and flow of the water pump are obtained through multi-stage joint pressurization. The manufacturing process of the component modules of several water pumps with different power consumption is ingeniously universalized. Thus, a water pump with high head, large flow, small volume, high efficiency and energy saving can be truly achieved, which is conducive to mass production, so as to better control the production design and manufacturing costs, and also conducive to the control of process quality;

[0028] Secondly, through the setting of the first channel and the second channel, the water flows through the rotor, the stator and the outside of the stator, and the water dissipates the heat generated by the high-speed operation of the rotor and the heat generated by the stator along with the water flow, which effectively improves the heat dissipation performance of the water pump and improves the efficiency and life of the water pump;

[0029] Furthermore, the setting of graphite sleeves and ceramic gaskets accelerates the heat dissipation of the shaft, ensuring that the shaft maintains better working performance and is also conducive to extending the service life of the shaft; at the same time, the graphite sleeve is used to dissipate heat from the top and bottom directions, which can better dissipate heat for the entire rotor and the center of the water pump;

[0030] In addition, the structural design of the entire water pump is reasonable, which improves the assembly process efficiency and assembly quality of the product.

[0031] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of an assembly perspective view of an embodiment of the present invention;

[0033] Figure 2 is a first exploded view (in a three-dimensional state) of an embodiment of the present invention;

[0034] Figure 3 is a second exploded view (in cross-section) of an embodiment of the present invention;

[0035] Figure 4 is a cross-sectional view of an embodiment of the present invention;

[0036] Figure 5 Is a cross-sectional view of the main module of an embodiment of the present invention;

[0037] Figure 6 yes Figure 4A partial enlarged schematic diagram of .

[0038] Description of the accompanying drawings:

[0039] 10. Top cover 11 external water inlet

[0040] 20. Main module 21. Shell

[0041] 201, outer shell 2011, gap

[0042] 202, inner shell 203, first channel

[0043] 204, second channel 2021, tapered wall

[0044] 2022, first cylindrical wall 2023, through hole

[0045] 2024, second cylindrical wall

[0046] 211, internal water inlet 212, internal water outlet

[0047] 213, first lug 2131, first buckle groove

[0048] 214, second wire hole 22, rotor

[0049] 221, rotating shaft 222, graphite bushing

[0050] 223, ceramic gasket 23, rotor seat

[0051] 24. Impeller 25. Stator

[0052] 30. Lower cover 301. Second lug

[0053] 3011, second buckle groove 31, outflow outlet

[0054] 40. Connecting seat 41. Concave position

[0055] 50. Side cover 501. Upper gusset plate

[0056] 502, lower end buckle plate 503, buckle point

[0057] 51. Wiring cavity 511. First wire passing hole. DETAILED DESCRIPTION

[0058] Please refer to Figures 1 to 6 As shown, it shows the specific structure of an embodiment of the present invention.

[0059] A modular assembled water pump includes an upper cover 10, a main body module 20 and a lower cover 30; wherein:

[0060] The upper cover 10 has an external water inlet 11; the lower end of the upper cover 10 is provided with an upper cover assembly portion;

[0061] The main body module 20 includes a shell 21 and a rotor 22, a rotor seat 23, an impeller 24, and a stator 25 installed in the shell 21; the shell 21 has an inner water inlet 211 and an inner water outlet 212, and the shell 21 is provided with a accommodating chamber (also called a pump chamber or a rotor chamber) for the blades of the rotor 22 to rotate, the inner water inlet 211 and the inner water outlet 212 are connected to the accommodating chamber, the rotor 22 is rotatably arranged on the rotor seat 23, and the impeller 24 rotates with the rotor 22; the upper and lower ends of the shell 21 are respectively provided with a main body upper end assembly part and a main body lower end assembly part;

[0062] The lower cover 30 has an outlet water port 31, and a lower cover assembly portion is disposed at the upper end of the lower cover 30;

[0063] When one main body module 20 is provided, the upper cover 10 is detachably assembled to the upper end assembly part of the main body of the main body module 20 through the upper cover assembly part, and the external water inlet 11 is connected to the internal water inlet 211; the lower cover 30 is detachably assembled to the lower end assembly part of the main body of the main body module 20 through the lower cover assembly part, and the external water outlet 31 is connected to the internal water outlet 212.

[0064] A modular multi-stage integrated water pump includes an upper cover 10, a main body module 20 and a lower cover 30; wherein:

[0065] The upper cover 10 has an external water inlet 11; the lower end of the upper cover 10 is provided with an upper cover assembly portion;

[0066] The main body module 20 includes a shell 21 and a rotor 22, a rotor seat 23, an impeller 24, and a stator 25 installed in the shell 21; the shell 21 has an inner water inlet 211 and an inner water outlet 212, and the shell 21 is provided with a accommodating chamber (also called a pump chamber or a rotor chamber) for the blades of the rotor 22 to rotate, the inner water inlet 211 and the inner water outlet 212 are connected to the accommodating chamber, the rotor 22 is rotatably arranged on the rotor seat 23, and the impeller 24 rotates with the rotor 22; the upper and lower ends of the shell 21 are respectively provided with a main body upper end assembly part and a main body lower end assembly part;

[0067] The lower cover 30 has an outlet water port 31, and a lower cover assembly portion is disposed at the upper end of the lower cover 30;

[0068] When more than two main modules 20 are provided, more than one connecting seat 40 is also included, and the number of the main modules 20 is one more than the connecting seat 40; the upper and lower ends of the connecting seat 40 are respectively provided with an upper end assembly part of the connecting seat 40 and a lower end assembly part of the connecting seat 40, and the upper and lower ends of the connecting seat 40 respectively have a connecting water inlet and a connecting water outlet and are interconnected; the upper cover 10 is detachably assembled to the main upper end assembly part of the main body module 20 on the upper side through the upper cover assembly part, and the external water inlet 11 is connected to the internal water inlet 211 of the uppermost main body module 20; under the rotation of the blades of the rotor 22, water is pressed into the main body module 20, and the water flows through the main body module 20 into the water inlet of the next stage water pump and enters the rotating inner pressurization of the blades of the rotor 22; here, the rotation of the blades of the rotor 22 generates centrifugal force, and the centrifugal force generated by the blades of the multi-stage rotor 22 accumulates, thereby increasing the overall output of the water pump, and the required head and flow of the water pump are obtained through multi-stage joint pressurization. The connecting seat 40 is assembled between two adjacent main body modules 20, and the upper end assembly part of the connecting seat 40 of the connecting seat 40 can be detachably assembled to the lower end assembly part of the main body of the upper main body module 20, and the lower end assembly part of the connecting seat 40 of the connecting seat 40 can be detachably assembled to the upper end assembly part of the main body of the lower main body module 20, the connecting water inlet is connected to the inner water outlet 212 of the upper main body module 20, and the connecting water outlet is connected to the inner water inlet 211 of the lower main body module 20; the lower cover 30 can be detachably assembled to the lower end assembly part of the main body of the lowest main body module 20 through the lower cover assembly part, and the outer water outlet 31 is connected to the inner water outlet 212 of the lowest main body module 20.

[0069] Typically, a nut is embedded in the connecting seat 40, and the shell 21 of the main module 20, the upper cover 10 and the lower device are all provided with connecting holes; a first screw is passed through the corresponding connecting hole at the top of the upper cover 10 and then adapted downward to be positioned in the nut; and a second screw is passed through the corresponding connecting hole at the bottom end of the lower cover 30 and then adapted upward to be positioned in the nut; preferably, a recessed position 41 is recessed downwardly at the periphery of the upper end of the connecting seat 40 and is lower than the connecting water inlet.

[0070] A first lug 213 is protruded from the outer side of the shell 21 of the main module 20, and a second lug 301 is protruded from the outer side of the lower cover 30; a side cover plate 50 is also provided, and the side cover plate 50 is assembled on the first lug 213 and the second lug 301 and surrounds a wiring cavity 51, and the wiring cavity 51 has a first wire hole 511 connected to the outside, and a second wire hole 214 is opened in the shell 21 of the main module 20; a cable is also provided to pass through the second wire hole 214 to be connected to the stator; preferably, the first wire hole 511 is provided on the second lug 301 and exposed downward at the bottom.

[0071] Here, the upper and lower ends of the side cover plate 50 are respectively extended toward the side where the lug 213 is located with an upper buckle plate 501 and a lower buckle plate 502, and buckle points 503 are provided on the upper buckle plate 501 and the lower buckle plate 502. The upper end of the first lug 213 of the upper main body module 20 is provided with a first buckle groove 2131, and the lower end of the second lug 301 is provided with a second buckle groove 3011. The upper buckle plate 501 of the side cover plate 50 is adapted to the upper end of the first lug 213 of the upper main body module 20, and its buckle point 503 is adapted to the first buckle groove 2131; the lower buckle plate 502 is adapted to the lower end of the second lug 301 of the lower cover 30, and its buckle point 503 is limited by the second buckle groove 3011.

[0072] In this embodiment, the shell 21 includes an outer shell 201 and an inner shell 202 integrally connected to the inner wall surface of the outer shell 201; the inner shell 202 has a tapered wall 2021 that is gradually enlarged from top to bottom and a second cylindrical wall 2024 connected to the lower end of the tapered wall 2021, the outer periphery of the tapered wall 2021 is connected to the inner wall surface of the outer shell 201 and a plurality of through holes 2023 are opened at its connecting portion; a first channel 203 is formed between the second cylindrical wall 2024 and the outer shell 201; the accommodating cavity is formed in the area enclosed by the first cylindrical wall 2022, the stator 25 is installed on the outer side of the first cylindrical wall 2022, and the first channel 203 is arranged around the outer side of the stator 25, the through holes 2023 are connected to the first channel 203, and the lower end of the first channel 203 is connected to the corresponding outflow outlet 31 of the lower cover 30 or the connecting water inlet of the connecting seat 40;

[0073] In addition, a second channel 204 is formed between the rotor 22 and the inner side of the first cylindrical wall 2022, and the upper and lower ends of the second channel 204 are respectively connected to the inner water inlet 211 and the inner water outlet 212; here, the stator 25 is assembled in a waterproof manner on the outer side of the first cylindrical wall 2022 and will not be affected by the water flow in the first channel 203; in this way, through the setting of the first channel 203 and the second channel 204, the water flows through between the rotor and the stator and the outer side of the stator, and the water dissipates the heat generated by the high-speed operation of the rotor and the heat generated by the stator along with the water flow, thereby effectively improving the heat dissipation performance of the water pump and improving the efficiency and life of the water pump.

[0074] Preferably, a vertically penetrating gap 2011 is provided inside the shell wall of the outer shell 201, and the gap 2011 is arranged around the periphery of the stator 25; a plurality of connecting ribs are provided in the gap 2011 for opening the aforementioned connecting holes. This structure, on the one hand, ensures the structural strength of the shell 21 and the overall strength of the main module 20; on the other hand, the provision of the gap 2011 and the connecting ribs can make the shell 21 less in material and lighter in weight while ensuring the strength; and on the other hand, the gap 2011 can also be used to dissipate heat.

[0075] like Figure 5 As shown, the rotor 22 has a rotating shaft 221, a graphite sleeve 222 and a ceramic gasket 223. The graphite sleeve 222 is sleeved on the outer periphery of the rotating shaft 221. The ceramic gasket 223 is respectively located at the upper and lower ends of the graphite sleeve 222. The rotor seat 23 is sleeved on the outer periphery of the graphite sleeve 222.

[0076] like Figure 3 As shown, the upper end of the shell 21 of the main module 20 and the upper cover 10, and the lower end of the shell 21 of the main module 20 and the lower cover 30 are both positioned by positioning protrusions and positioning grooves, and the positioning protrusions can be detachably extended into the corresponding positioning grooves.

[0077] The design emphasis of the present invention is that it mainly includes:

[0078] The main method is to design the water pump into an upper cover, a main module, a lower cover and a connecting seat. According to the actual power consumption requirements of the water pump, the corresponding number of main modules are selected, and the required water pump is assembled. The required head and flow of the water pump are obtained through multi-stage joint pressurization. The manufacturing process of the component modules of several water pumps with different power consumption is ingeniously universalized. Thus, a water pump with high head, large flow, small volume, high efficiency and energy saving can be truly achieved, which is conducive to mass production, so as to better control the production design and manufacturing costs, and also conducive to the control of process quality;

[0079] Secondly, through the setting of the first channel and the second channel, the water flows through the rotor, the stator and the outside of the stator, and the water dissipates the heat generated by the high-speed operation of the rotor and the heat generated by the stator along with the water flow, which effectively improves the heat dissipation performance of the water pump and improves the efficiency and life of the water pump;

[0080] Furthermore, the setting of graphite sleeves and ceramic gaskets accelerates the heat dissipation of the shaft, ensuring that the shaft maintains better working performance and is also conducive to extending the service life of the shaft; at the same time, the graphite sleeve is used to dissipate heat from the top and bottom directions, which can better dissipate heat for the entire rotor and the center of the water pump;

[0081] In addition, the structural design of the entire water pump is reasonable, which improves the assembly process efficiency and assembly quality of the product.

[0082] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A modular assembled water pump, characterized in that: It comprises an upper cover (10), a main body module (20) and a lower cover (30); wherein: The upper cover (10) has an external water inlet (11); the lower end of the upper cover (10) is provided with an upper cover assembly portion; The main body module (20) comprises a shell (21) and a rotor (22), a rotor seat (23), an impeller (24), and a stator (25) installed in the shell (21); the shell (21) has an inner water inlet (211) and an inner water outlet (212), and a receiving cavity is arranged inside the shell (21), the inner water inlet (211) and the inner water outlet (212) are connected to the receiving cavity, the rotor (22) is rotatably arranged on the rotor seat (23), and the impeller (24) rotates with the rotor (22); the upper and lower ends of the shell (21) are respectively provided with a main body upper end assembly part and a main body lower end assembly part; The lower cover (30) has an outflow water outlet (31), and a lower cover assembly portion is provided at the upper end of the lower cover (30); When one main body module (20) is provided, the upper cover (10) is detachably assembled to the main body upper end assembly part of the main body module (20) through the upper cover assembly part, and the external water inlet (11) is connected to the internal water inlet (211); the lower cover (30) is detachably assembled to the main body lower end assembly part of the main body module (20) through the lower cover assembly part, and the external water outlet (31) is connected to the internal water outlet (212); the shell (21) comprises an outer shell (201) and an inner shell (202) integrally connected to the inner wall surface of the outer shell (201); the inner shell (202) comprises a conical wall (2021) which is gradually enlarged from top to bottom, a first cylindrical wall (2022) connected to the upper end of the conical wall (2021), and a cylindrical wall (2021) connected to the conical wall (2021). ) at the lower end of the outer shell (201), the outer periphery of the conical wall (2021) is connected to the inner wall surface of the outer shell (201), and a plurality of through holes (2023) are provided at the connection portion; a first channel (203) is formed between the second cylindrical wall (2024) and the outer shell (201); the accommodating cavity is formed in the area enclosed by the first cylindrical wall (2022), the stator (25) is mounted on the outer side of the first cylindrical wall (2022), and the first channel (203) is arranged around the outer side of the stator (25), the through holes (2023) are connected to the first channel (203), and the lower end of the first channel (203) is connected to the outgoing water outlet (31) of the corresponding lower cover (30) or the connecting water inlet of the connecting seat (40); Furthermore, a second channel (204) is formed between the rotor (22) and the inner side of the first cylindrical wall (2022), and the upper and lower ends of the second channel (204) are respectively connected to the inner water inlet (211) and the inner water outlet (212).

2. The modular assembled water pump according to claim 1, characterized in that: The rotor (22) comprises a rotating shaft (221), a graphite sleeve (222) and a ceramic gasket (223); the graphite sleeve (222) is sleeved on the outer periphery of the rotating shaft (221); the ceramic gasket (223) is respectively located at the upper and lower ends of the graphite sleeve (222); and the rotor seat (23) is sleeved on the outer periphery of the graphite sleeve (222).

3. The modular assembled water pump according to claim 1, characterized in that: A gap (2011) penetrating vertically is provided inside the shell wall of the outer shell (201), and the gap (2011) is arranged around the periphery of the stator (25).

4. The modular assembled water pump according to claim 1, characterized in that: The upper end of the shell (21) of the main module (20) and the upper cover (10), as well as the lower end of the shell (21) of the main module (20) and the lower cover (30), are positioned by matching positioning protrusions and positioning grooves, and the positioning protrusions are detachably inserted into the corresponding positioning grooves.

5. A modular multi-stage one-piece water pump, characterized in that: It comprises an upper cover (10), a main body module (20) and a lower cover (30); wherein: The upper cover (10) has an external water inlet (11); the lower end of the upper cover (10) is provided with an upper cover assembly portion; The main body module (20) comprises a shell (21) and a rotor (22), a rotor seat (23), an impeller (24), and a stator (25) installed in the shell (21); the shell (21) has an inner water inlet (211) and an inner water outlet (212), and a receiving cavity is arranged inside the shell (21), the inner water inlet (211) and the inner water outlet (212) are connected to the receiving cavity, the rotor (22) is rotatably arranged on the rotor seat (23), and the impeller (24) rotates with the rotor (22); the upper and lower ends of the shell (21) are respectively provided with a main body upper end assembly part and a main body lower end assembly part; The lower cover (30) has an outflow water outlet (31), and a lower cover assembly portion is provided at the upper end of the lower cover (30); When more than two main body modules (20) are provided, more than one connecting seat (40) is further provided, and the number of the main body modules (20) is one more than the number of connecting seats (40); the upper and lower ends of the connecting seat (40) are respectively provided with an upper end assembly part of the connecting seat (40) and a lower end assembly part of the connecting seat (40); the upper and lower ends of the connecting seat (40) respectively have a connecting water inlet and a connecting water outlet and are connected to each other; the upper cover (10) is detachably assembled to the upper end assembly part of the main body of the uppermost main body module (20) through the upper cover assembly part, and the external water inlet (11) is connected to the internal water inlet of the uppermost main body module (20). (211); the connecting seat (40) is assembled between two adjacent main body modules (20); the upper end assembly part of the connecting seat (40) of the connecting seat (40) is detachably assembled to the lower end assembly part of the main body of the upper main body module (20); the lower end assembly part of the connecting seat (40) of the connecting seat (40) is detachably assembled to the upper end assembly part of the main body of the lower main body module (20); the connecting water inlet is connected to the inner water outlet (212) of the upper main body module (20); the connecting water outlet is connected to the inner water inlet (211) of the lower main body module (20); the lower cover (30) is detachably assembled through the lower cover assembly part The main body lower end assembly part is mounted on the main body module (20) at the lowermost side, and the outer water outlet (31) is connected to the inner water outlet (212) of the main body module (20) at the lowermost side; the shell (21) comprises an outer shell (201) and an inner shell (202) integrally connected to the inner wall surface of the outer shell (201); the inner shell (202) comprises a tapered wall (2021) which is gradually enlarged from top to bottom, a first cylindrical wall (2022) connected to the upper end of the tapered wall (2021), and a second cylindrical wall (2024) connected to the lower end of the tapered wall (2021); the outer periphery of the tapered wall (2021) is connected to the outer shell (201 ) and a plurality of through holes (2023) are provided on the inner wall surface and the connection part thereof; a first channel (203) is formed between the second cylindrical wall (2024) and the outer shell (201); the accommodating cavity is formed in the area enclosed by the first cylindrical wall (2022), the stator (25) is installed on the outside of the first cylindrical wall (2022), and the first channel (203) is arranged around the outside of the stator (25), the through holes (2023) are connected to the first channel (203), and the lower end of the first channel (203) is connected to the outgoing water outlet (31) of the corresponding lower cover (30) or the connecting water inlet of the connecting seat (40); Furthermore, a second channel (204) is formed between the rotor (22) and the inner side of the first cylindrical wall (2022), and the upper and lower ends of the second channel (204) are respectively connected to the inner water inlet (211) and the inner water outlet (212).

6. The modular multi-stage one-piece water pump according to claim 5, characterized in that: A nut is embedded in the connection seat (40), and the shell (21), upper cover (10) and lower device of the main module (20) are all provided with connection holes; a first screw is passed through the corresponding connection hole at the top end of the upper cover (10) and then adapted downward to be positioned in the nut; and a second screw is passed through the corresponding connection hole at the bottom end of the lower cover (30) and then adapted upward to be positioned in the nut.

7. The modular multi-stage one-piece water pump according to claim 5, characterized in that: A first lug (213) is protruding from the outer side of the shell (21) of the main module (20), and a second lug (301) is protruding from the outer side of the lower cover (30); a side cover plate (50) is also provided, and the side cover plate (50) is assembled on the first lug (213) and the second lug (301) to enclose a wiring cavity (51), and the wiring cavity (51) has a first wire hole (511) communicating with the outside, and a second wire hole (214) is opened in the shell (21) of the main module (20); a cable is also provided to pass through the second wire hole (214) to be connected to the stator.

8. The modular multi-stage one-piece water pump according to claim 7, characterized in that: The upper and lower ends of the side cover plate (50) are respectively extended toward the side where the lug (213) is located, with an upper buckle plate (501) and a lower buckle plate (502), and buckle points (503) are provided on the upper buckle plate (501) and the lower buckle plate (502). The upper end of the first lug (213) of the upper main body module (20) is provided with a first buckle groove (2131), and the lower end of the second lug (301) is provided with a second buckle groove (3011). The upper buckle plate (501) of the side cover plate (50) is adapted to the upper end of the first lug (213) of the upper main body module (20), and its buckle point (503) is adapted to the first buckle groove (2131); the lower buckle plate (502) is adapted to the lower end of the second lug (301) of the lower cover (30), and its buckle point (503) is limited in the second buckle groove (3011).

9. The modular multi-stage integrated water pump according to claim 5, characterized in that: The rotor (22) comprises a rotating shaft (221), a graphite sleeve (222) and a ceramic gasket (223); the graphite sleeve (222) is sleeved on the outer periphery of the rotating shaft (221); the ceramic gasket (223) is respectively located at the upper and lower ends of the graphite sleeve (222); and the rotor seat (23) is sleeved on the outer periphery of the graphite sleeve (222).

10. The modular multi-stage integrated water pump according to claim 5, characterized in that: A gap (2011) penetrating vertically is provided inside the shell wall of the outer shell (201), and the gap (2011) is arranged around the periphery of the stator (25).

11. The modular multi-stage integrated water pump according to claim 5, characterized in that: The upper end of the shell (21) of the main module (20) and the upper cover (10), as well as the lower end of the shell (21) of the main module (20) and the lower cover (30), are positioned by matching positioning protrusions and positioning grooves, and the positioning protrusions are detachably inserted into the corresponding positioning grooves.

12. The modular multi-stage integrated water pump according to claim 5, characterized in that: The upper end periphery of the connection seat (40) is recessed downward to form a recess (41) lower than the connection water inlet.

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