Novel submersible pump
Through the overall structural design, the bearing seat is integrated with the inner shell of the guide vane, and the mechanical sealing component is sealed and connected with the shaft extension end cover, solving the problems of easy damage to the mechanical seal of the submersible pump, water leakage, oil leakage, and high vibration and noise, achieving high-precision installation and stable operation.
Patent Information
- Application Number
- CN202520133214.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2035-01-21
AI Technical Summary
The mechanical seals of existing submersible pumps are prone to damage, leaking water and oil, operating vibration noise is high, failure rate is high, complex structure and poor rigidity, and the coordination accuracy is difficult to ensure.
The bearing seat and the inner shell of the guide vane are used as the overall structure, and the mechanical sealing component is sealed and connected with the shaft extension end cover. The left and right covers are used to achieve the connection and sealing of the two sides of the bearing component. The inner shell of the guide vane is directly clamped with the inner shell of the motor base, which increases the sealing ring, and the overall structure is simple and tight, improving the coaxiality and installation accuracy.
It improves the operating stability and service life of the submersible pump, reduces the failure rate and noise, solves the problem of water and oil leakage, and has a more streamlined and tight structure.
Smart Images
Figure CN223241646U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of submersible pumps, and more particularly to a novel submersible pump. Background Art
[0002] Submersible pumps are needed in different types of projects due to the needs of flood control, drainage, and water diversion. Submersible pumps have a smaller size and a wider range of uses because the pump and motor are integrated.
[0003] However, as the number of uses increases, the shortcomings of submersible pumps have also become more prominent and have not been fundamentally resolved, such as mechanical seals that are easily damaged, leading to water and oil leakage, large vibration and noise during operation, and high failure rates. Utility Model Content
[0004] In view of the problems existing in the prior art, the purpose of the present utility model is to provide a new submersible pump.
[0005] In order to solve the above problems, the present invention adopts the following technical solutions.
[0006] A new submersible pump comprises an impeller component, a guide vane body component and a motor component connected in sequence from left to right, the impeller component is arranged in the impeller chamber, the guide vane body component comprises a guide vane body outer shell, a guide vane body inner shell and a guide vane, the guide vane is fixedly connected between the guide vane body outer shell and the guide vane body inner shell, the motor component comprises a motor base outer shell, a motor base inner shell, a stator and rotor component and a transmission shaft, the stator and rotor component is arranged in the motor base inner shell, the transmission shaft is arranged at the center of the stator and rotor component, and passes through the guide vane body component and is drive-connected to the impeller component, the interior of the guide vane inner shell is integrated with a bearing seat, a bearing assembly is installed inside the bearing seat, the transmission shaft passes through the bearing assembly and is fixedly connected to the inner side surface of the impeller, the left side of the bearing seat is fixedly connected to the left pressure cover by bolts, the right side of the bearing seat is fixedly connected to the right pressure cover by bolts, the left end of the guide vane inner shell is fixedly connected to the shaft extension end cover, and the shaft extension end cover and the outer circumferential surface of the transmission shaft are sealed by a mechanical seal assembly.
[0007] As a further description of the above solution: the mechanical seal assembly is sleeved and fixed on the transmission shaft, and its outer side is sealed with the inner side of the end cover of the shaft extension end.
[0008] As a further description of the above solution: a soft sealing ring is installed between the opposite surfaces of the right pressure cover and the bearing seat.
[0009] As a further description of the above scheme: the right end face of the inner shell of the guide vane body is provided with a sealing mating end, the end face of the sealing mating end is clamped with the left end face of the inner shell of the motor base, and a sealing ring is provided between the sealing end face and the clamping surface of the inner shell of the motor base.
[0010] As a further description of the above solution: the left end of the motor base housing is fixedly connected to the guide vane body housing by bolts, and the left end of the guide vane body housing is fixedly connected to the impeller chamber by bolts.
[0011] As a further description of the above solution: the left end of the inner shell of the guide vane body is fixedly connected to the end cover of the shaft extension end by bolts.
[0012] Compared with the prior art, the advantages of the present invention are:
[0013] This solution realizes an overall structure by utilizing the bearing seat and the inner shell of the guide vane body, thereby improving the overall strength of the bearing seat and enhancing its ability to resist deformation under stress. The water pump guide vane body housing is directly connected to the motor housing, which makes the installation accuracy of the unit higher and improves the coaxial accuracy of the body. The left and right glands are used to connect and seal both sides of the bearing assembly, and the shaft extension end cover inside the inner shell of the guide vane body is arranged around the outside of the drive shaft, and the water pump impeller component is assembled on the drive shaft, that is, the water pump and the motor part share a drive shaft, and the mechanical seal assembly is used to connect and seal the drive shaft and the shaft extension end cover inside the left end of the inner shell of the guide vane body. The overall structure is more streamlined and compact, and the rigidity is improved at the same time, thereby achieving the advantages of high installation accuracy and good coaxiality of the overall structure, which effectively improves the operation stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;
[0015] Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A in the middle;
[0016] Figure 3 for Figure 2 A magnified schematic diagram of the structure of part B in the middle;
[0017] Figure 4 for Figure 2 Enlarged schematic diagram of the structure of part C in the middle.
[0018] Description of the numbers in the figure:
[0019] 1. Motor base housing; 2. Guide vane body housing; 21. Seal mating end; 22. Sealing ring; 23. Guide vane; 3. Motor base inner housing; 4. Impeller chamber; 5. Stator and rotor components; 6. Drive shaft; 7. Rear guide cap; 8. Bearing seat; 9. Bearing assembly; 10. Left pressure cap; 11. Right pressure cap; 111. Soft sealing ring; 12. Guide vane body inner housing; 13. Shaft extension end cover; 14. Mechanical seal assembly; 141. Mating pressure cap; 15. Impeller component; 16. Left flow tube; 17. Left guide cap; 18. Right flow tube. DETAILED DESCRIPTION
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention;
[0021] See also Figures 1 to 4 In the present invention, a new submersible pump comprises an impeller component 15, a guide vane body component and a motor component connected in sequence from left to right. The impeller component 15 is arranged in the impeller chamber 4. The guide vane body component comprises a guide vane body outer shell 2, a guide vane body inner shell 12 and a guide vane 23. The guide vane 23 is fixedly connected between the guide vane body outer shell 2 and the guide vane body inner shell 12. The motor component comprises a motor base outer shell 1, a motor base inner shell 3, a stator and rotor component 5 and a transmission shaft 6. The stator and rotor component 5 is arranged in the motor base inner shell 3. The transmission shaft 6 is arranged at the center of the stator and rotor component 5, and passes through the guide vane body component and is driven and connected to the impeller component 15. The left end of the motor base outer shell 1 is connected by bolts. It is fixedly connected to the guide vane body outer shell 2, the interior of the motor base outer shell 1 is fixedly connected to the motor base inner shell 3, the left end of the guide vane body outer shell 2 is fixedly connected to the impeller chamber 4 by bolts, the interior of the guide vane body outer shell 2 is fixedly connected to the guide vane body inner shell 12 through the guide vane 23, the interior of the guide vane body inner shell 12 is integrated with a bearing seat 8, and a bearing assembly 9 is installed inside the bearing seat 8. One end of the drive shaft 6 passes through the bearing assembly 9 and is fixedly connected to the inner side thereof, the left side of the bearing seat 8 is fixedly connected to the left pressure cover 10 by bolts, and the right side of the bearing seat 8 is fixedly connected to the right pressure cover 11 by bolts, and the left end of the guide vane body inner shell 12 is fixedly connected to the shaft extension end cover 13 by bolts.
[0022] The left end face of the impeller component 15 is connected to the left guide cap 17 , the left end of the impeller chamber 4 is connected to the left flow cylinder 16 , the right end of the motor base housing 1 is connected to the right flow cylinder 18 , and the right end of the motor base inner housing 3 is connected to the rear guide cap 7 .
[0023] A mechanical seal assembly 14 is installed between the shaft extension end cover 13 and the outer side of the left end of the transmission shaft 6 , and the left end of the transmission shaft 6 is fixedly connected to the impeller component 15 .
[0024] See also Figure 2 Mechanical seal assembly 14 is sleeved and fixed onto drive shaft 6, with its outer side sealingly mating with the inner side of shaft extension end cap 13. To further ensure the sealing effect and prolong the sealing time, an additional mechanical seal is added here. That is, two mechanical seals are sleeved and fixed to drive shaft 6 in series in the same direction. The outer side of the added mechanical seal seals with the inner side of a mating gland 141, which is fixedly connected to the end face of shaft extension end cap 13 via bolts. The mechanical seal assembly 14 strengthens the seal between the drive shaft 6 and the shaft extension end cap 13, effectively extending the service life of the mechanical seal assembly, thereby increasing the service life of the unit.
[0025] See also Figure 3A soft sealing ring 111 is installed between the opposite surfaces of the right gland 11 and the bearing seat 8. The sealing effect between the opposite surfaces of the right gland 11 and the bearing seat 8 is improved by the soft sealing ring 111.
[0026] See also Figure 4 A sealing mating end 21 is provided on the right side of the guide vane body outer shell 2, and the end face of the sealing mating end 21 is clamped with the left end face of the motor base inner shell 3, and a sealing ring 22 is provided between the sealing mating end 21 and the clamping surface of the motor base inner shell 3.
[0027] In the present invention, the sealing end 21 cooperates with the sealing ring 22 to achieve the matching accuracy and sealing effect between the guide vane body inner shell 12 and the motor base inner shell 3.
[0028] In a specific embodiment, the motor base housing 1 is connected to the guide vane body housing 2, and the guide vane body outer shell 12 is snap-fitted to the motor base inner shell 3 to form a whole. The stator and rotor components 5 are started to drive the transmission shaft 6 to rotate to drive the impeller component 15 to rotate inside the impeller chamber 4 to achieve drainage, and the bearing assembly 9 inside the bearing seat 8 and the bearing assembly at the right end of the motor are used to support the transmission shaft 6 for rotation. The bearing seat 8 and the guide vane body outer shell 2 are used to realize an integrated structure, so that the rigidity and installation accuracy of the bearing seat 8 are higher, and the coaxial accuracy of the body is improved. The left pressure cover 10 and the right pressure cover 11 are used to realize the two sides of the bearing assembly 9. The connection is sealed, and the shaft extension end cover 13 inside the inner shell 12 of the guide vane body is arranged around the outside of the transmission shaft 6, and the mechanical seal assembly 14 is used to realize the sealing connection between the transmission shaft 6 and the shaft extension end cover 13 inside the inner shell 12 of the guide vane body. The overall structure is more streamlined and compact, thereby achieving the advantages of high overall structural installation accuracy and good coaxiality, effectively improving the operation stability, solving the problems of complex and unreasonable structure, poor rigidity and difficulty in ensuring matching accuracy of existing submersible pumps in the prior art, and the chain effect solves the problems of high failure rate, high vibration and noise, and easy water and oil leakage of existing submersible pumps.
[0029] The advantages of this embodiment are:
[0030] 1. The transition component connecting the guide vane body and the motor is removed. The bearing seat 8 and the inner shell 12 of the guide vane body are an integral structure. The sealing effect of the mechanical seal assembly 14 and the shaft end cover 13 is enhanced. The overall structure is simpler, the rigidity is high, and the accuracy of its overall dimensions is easier to ensure.
[0031] 2. Because the bearing seat 8 and the guide vane body inner shell 12 are an integral structure, and the motor seat inner shell 3 is directly connected and fixed to the right end face of the guide vane body inner shell 12 through the matching surface opening, the position and dimensional accuracy of the bearing seat 8 is easier to ensure, thereby ensuring the coaxiality accuracy of the water pump and the motor, and also effectively ensuring the matching accuracy of the mechanical seal.
[0032] 3. Because the new structure submersible pump optimizes the structure of the existing submersible pump, it effectively solves the cumulative errors in the processing and installation process, including the cumulative errors in component displacement caused by the large number of matching components during operation, thereby effectively solving the problem of the difficulty in ensuring the matching accuracy between the existing submersible pump and the motor. At the same time, the chain effect solves the problems of high failure rate, high vibration and noise, and easy water and oil leakage of the existing submersible pump, which can effectively improve the operation effect and service life of the submersible pump.
[0033] The above are only preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.
Claims
1. A novel submersible pump, comprising an impeller component (15), a guide vane component and a motor component connected sequentially from left to right, wherein the impeller component (15) is arranged in an impeller chamber (4), the guide vane component comprises a guide vane body outer shell (2), a guide vane body inner shell (12) and a guide vane (23), the guide vane (23) being fixedly connected between the guide vane body outer shell (2) and the guide vane body inner shell (12), the motor component comprises a motor base outer shell (1), a motor base inner shell (3), a stator and rotor component (5) and a transmission shaft (6), the stator and rotor component (5) being arranged in the motor base inner shell (3), the transmission shaft (6) being arranged at the center of the stator and rotor component (5), passing through the guide vane body component and being drivingly connected to the impeller component (15), characterized in that: A bearing seat (8) is integrated inside the guide vane body inner shell (12), a bearing assembly (9) is installed inside the bearing seat (8), the transmission shaft (6) passes through the bearing assembly (9) and is fixedly connected to the inner side surface thereof, the left side of the bearing seat (8) is fixedly connected to a left pressure cover (10) by bolts, the right side of the bearing seat (8) is fixedly connected to a right pressure cover (11) by bolts, the left end of the guide vane body inner shell (12) is fixedly connected to a shaft extension end cover (13), and the shaft extension end cover (13) is sealed to the outer circumferential surface of the transmission shaft (6) by a mechanical seal assembly (14).
2. A new submersible pump according to claim 1, characterized in that: The mechanical seal assembly (14) is sleeved and fixed on the transmission shaft (6), and its outer side is sealed with the inner side of the shaft extension end cover (13).
3. A new submersible pump according to claim 1, characterized in that: A soft sealing ring (111) is installed between the opposite surfaces of the right gland (11) and the bearing seat (8).
4. A new submersible pump according to claim 1, characterized in that: The right end face of the guide vane inner shell (12) is provided with a sealing mating end (21), the end face of the sealing mating end (21) is engaged with the left end face of the motor base inner shell (3), and a sealing ring (22) is provided between the engaging surface of the sealing mating end (21) and the motor base inner shell (3).
5. A new submersible pump according to claim 1, characterized in that: The left end of the motor base housing (1) is fixedly connected to the guide vane housing (2) via bolts, and the left end of the guide vane housing (2) is fixedly connected to the impeller chamber (4) via bolts.
6. A new submersible pump according to claim 1, characterized in that: The left end of the guide vane inner shell (12) is fixedly connected to the shaft extension end cover (13) via bolts.