Energy-saving centrifugal pump with low radial force

Abstract

The application relates to the technical field of centrifugal pumps, in particular to an energy-saving centrifugal pump with low radial force, which comprises a pump body, a pump shell is fixedly arranged on the pump body, a pump shaft is installed in the pump shell, an impeller is installed on the pump shaft, an auxiliary shaft support mechanism is also installed in the pump shell, the pump shaft is assisted and supported through the auxiliary shaft support mechanism, the auxiliary shaft support mechanism is connected with a self-locking assembly, the auxiliary shaft support mechanism drives the self-locking assembly to move, thereby realizing the locking of the auxiliary shaft support mechanism, the auxiliary shaft support mechanism is also connected with a wheel body fixing mechanism, an auxiliary shaft support frame is arranged in the pump shell, when the impeller is installed on the pump shaft, the impeller can drive the auxiliary shaft support frame to move, thereby making the auxiliary shaft support frame contact with the pump shaft from the periphery of the pump shaft, so that the pump shaft can be well assisted and supported, even if the bearing is worn, the pump shaft will not appear the phenomenon of deviation, and the support stiffness of the pump shaft is fully ensured.

Description

Technical Field

[0001] This invention relates to the field of centrifugal pump technology, specifically to an energy-saving centrifugal pump with low radial force. Background Technology

[0002] Energy-saving centrifugal pumps are widely used in various fields. During operation, the wear of bearings can reduce the support stiffness of the pump shaft, exacerbating the eccentricity phenomenon. Eccentricity causes the impeller to be subjected to unbalanced radial forces when rotating. The greater the eccentricity, the greater the radial force. Reducing the radial force of the energy-saving centrifugal pump is an important measure to improve the pump's operational stability and extend its service life.

[0003] Existing energy-saving centrifugal pumps cannot provide adequate auxiliary support for the pump shaft, ensuring stable support even when bearings wear out, preventing further eccentricity, thus enabling stable operation and extending the pump's service life. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving centrifugal pump with low radial force to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An energy-saving centrifugal pump with low radial force includes a pump body, a pump casing fixedly mounted on the pump body, a pump shaft installed in the pump casing, an impeller mounted on the pump shaft, and a shaft auxiliary support mechanism installed in the pump casing to provide auxiliary support for the pump shaft.

[0007] The shaft auxiliary support mechanism is connected to a self-locking component. The shaft auxiliary support mechanism drives the self-locking component to move, thereby locking the shaft auxiliary support mechanism.

[0008] The shaft auxiliary support mechanism is also connected to a wheel fixing mechanism, which fixes the impeller to the pump shaft.

[0009] During installation, the impeller drives the wheel fixing mechanism to move, which in turn drives the shaft auxiliary support mechanism to move, providing auxiliary support for the pump shaft.

[0010] Preferably, the shaft auxiliary support mechanism includes a connecting ring and a shaft support frame. The connecting ring is connected to the shaft support frame, and drives the shaft support frame to move to support the pump shaft.

[0011] Preferably, the self-locking assembly includes a mating support and a movable support plate, wherein the mating support is fixedly disposed on the inner wall of the pump casing.

[0012] Preferably, the movable support plate is movably connected to the connecting ring, and the movable support plate moves when the connecting ring moves.

[0013] Preferably, the movable support plate and the mating support platform cooperate to lock the connecting ring, and the movable support plate can also drive the connecting ring to reset.

[0014] Preferably, the wheel fixing mechanism includes a mounting rod and a wheel bracket, wherein the mounting rod is movably mounted on the pump shaft.

[0015] Preferably, the mounting rod cooperates with the impeller to support the impeller, and the mounting rod is movably connected to the wheel body bracket.

[0016] Preferably, the wheel bracket is also movably mounted on the pump shaft, and a connecting plate is movably mounted on the wheel bracket.

[0017] Preferably, the mounting rod can also drive the connecting plate to move synchronously, and a wheel plate is fixedly installed on the connecting plate.

[0018] Preferably, a wheel locking block is fixedly provided on the wheel locking plate, and the impeller is locked by the wheel locking block cooperating with the impeller.

[0019] Preferably, the mounting rod is connected to the connecting ring, and the mounting rod is locked synchronously when the connecting ring is locked.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a reasonable structural design and strong functionality, and has the following advantages:

[0021] 1. A shaft support frame is installed inside the pump casing. When the impeller is installed on the pump shaft, it can drive the shaft support frame to move, so that the shaft support frame contacts the pump shaft from all sides. This provides good auxiliary support for the pump shaft. Even if the bearing wears, the pump shaft will not shift. This fully ensures the support rigidity of the pump shaft and reduces radial force.

[0022] 2. During installation, the impeller is fitted onto the pump shaft, and the mounting cavity is fitted onto the mounting support rod until the mounting column contacts the mating connecting plate. Then, the impeller is continued to be pushed, which will move the mounting support rod together. As the mounting support rod moves, it will move the connecting ring. Under the action of the connecting ring, the shaft support frame can be moved to support the pump shaft. At the same time, as the connecting ring moves, the movable support plate will also move. Through the cooperation between the movable support plate and the mating support, the connecting ring can be automatically locked, ensuring the stability of the shaft support frame.

[0023] 3. In addition, when the mounting support rod moves, it will also drive the wheel body bracket to move. As the wheel body bracket moves, it will drive the wheel body clamping plate to move towards the impeller. Since the wheel body clamping plate and the mounting support rod are also connected by a drive plate, the mounting support rod will also drive the wheel body clamping plate to move synchronously with it. This allows the wheel body clamping block on the wheel body clamping plate to be inserted into the mounting ring groove on the impeller, realizing the fixed connection between the impeller and the pump shaft, making the installation of the impeller very convenient. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall assembly of the pump body.

[0025] Figure 2 This is a schematic diagram of the assembly of the pump body and the impeller.

[0026] Figure 3 This is a schematic diagram of the assembly inside the pump casing.

[0027] Figure 4 A first-person view of the pump shaft assembly.

[0028] Figure 5 A second-view schematic diagram of the pump shaft assembly.

[0029] Figure 6 This is a schematic diagram of the impeller structure.

[0030] Figure 7 A first-person view diagram to illustrate the assembly of the support platform, connecting links, and movable support plates.

[0031] Figure 8 A second-view diagram illustrating the assembly of the support platform, connecting links, and movable support plates.

[0032] Figure 9 A first-person view diagram of the assembly of the movable support plate.

[0033] Figure 10 A second-view schematic diagram of the assembly of the movable support plate.

[0034] Figure 11 This is a schematic diagram of the structure for installing the support rod.

[0035] Figure 12 This is a schematic diagram of the internal structure of the pump casing.

[0036] Figure 13 This is an assembly diagram for installing the support rod and wheel bracket.

[0037] In the diagram: 1. Pump body; 11. Pump casing; 12. Pump cover; 13. Internal guide plate; 14. Mating guide hole; 15. Support insertion hole; 2. Pump shaft; 21. Support ring groove; 22. Bearing shaft plate; 23. Limiting guide groove; 24. Insertion socket; 3. Impeller; 31. Mounting ring groove; 32. Mounting column; 33. Mounting cavity; 4. Mating platform; 41. Mating platform cavity; 42. Support guide hole; 5. Connecting ring; 51. Connecting rotating groove; 52. Supporting bar; 53. Connecting column; 54. Supporting ring column; 55. Upper extension connecting plate; 56. First mating connecting rod; 6. Movable bearing plate; 61. Bearing plug rod; 62. Bearing plug plate; 63. Reinforcing bearing rod; 64. Bearing mating frame; 65. Reset cavity 651. Limiting bearing plate; 652. Support channel; 653. Matching top plate; 654. Insertion channel; 66. Matching plug plate; 67. Support strip; 68. Limiting bearing plate; 681. Threaded hole; 682. Limiting carrier bar; 69. Insertion carrier rod; 691. Threaded block; 7. Mounting carrier rod; 71. Linkage insert block; 72. Contact wheel; 73. Matching connecting plate; 74. Second matching connecting rod; 75. Driving insert plate; 8. Wheel body bracket; 80. Connecting cavity; 81. Connecting insert plate; 82. Wheel body bracket; 83. Driving channel; 84. Wheel body bracket; 85. Matching insert bar; 9. Shaft support frame; 91. Supporting wheel; 92. Matching guide rod; 93. Bearing protrusion; 94. Hollow connecting bar. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] This invention provides a technical solution:

[0040] like Figure 1 , Figure 2 and Figure 3As shown, an energy-saving centrifugal pump with low radial force includes a pump body 1, a pump casing 11 fixedly mounted on the pump body 1, a pump shaft 2 installed in the pump casing 11, an impeller 3 installed on the pump shaft 2, and a shaft auxiliary support mechanism also installed in the pump casing 11 to provide auxiliary support for the pump shaft 2. The shaft auxiliary support mechanism is connected to a self-locking component, which moves to lock the shaft auxiliary support mechanism. The shaft auxiliary support mechanism is also connected to a wheel fixing mechanism, which fixes the impeller 3 to the pump shaft 2. When the impeller 3 is installed, it moves the wheel fixing mechanism, which in turn moves the shaft auxiliary support mechanism to provide auxiliary support for the pump shaft 2.

[0041] like Figure 1 and Figure 12 As shown, a pump cover 12 is fixedly installed on the pump housing 11, and an internal guide plate 13 is fixedly installed inside the pump housing 11. The internal guide plate 13 has a mating guide hole 14 and a support insertion hole 15 is provided on one side of the internal guide plate 13.

[0042] like Figure 6 As shown, the impeller 3 has an installation ring groove 31, and the impeller 3 is fixedly provided with an installation column 32, which has an installation cavity 33.

[0043] like Figure 3 , Figure 4 and Figure 5 As shown, the shaft auxiliary support mechanism includes a connecting ring 5 and a shaft support frame 9. The connecting ring 5 is connected to the shaft support frame 9, driving the shaft support frame 9 to move and support the pump shaft 2. The pump shaft 2 has a support ring groove 21, and a bearing shaft plate 22 is fixedly installed on the circumference of the pump shaft 2. The bearing shaft plate 22 has a limit guide groove 23, and an insertion bearing hole 24 is also opened on the bearing shaft plate 22. A support wheel 91 is installed on the shaft support frame 9, and a matching guide rod 92 is fixedly installed on the shaft support frame 9. The matching guide rod 92 is inserted into the matching guide hole 14. A bearing protrusion 93 is also fixedly installed on the shaft support frame 9, and a hollow connecting strip 94 is fixedly installed on the bearing protrusion 93. The inner wall of the hollow connecting strip 94 is smooth and burr-free.

[0044] like Figure 7 and Figure 8As shown, the self-locking assembly includes a mating support 4 and a movable support plate 6. The mating support 4 is fixedly mounted on the inner wall of the pump casing 11. The movable support plate 6 is movably connected to the connecting ring 5. When the connecting ring 5 moves, it drives the movable support plate 6 to move as well. The movable support plate 6 and the mating support 4 cooperate to lock the connecting ring 5. The movable support plate 6 can also drive the connecting ring 5 to reset. The connecting ring 5 has a connecting rotation groove 51, and a support strip 52 is fixedly mounted on the circumference of the connecting ring 5. A connecting column 53 is fixedly installed on the support bar 52. The connecting column 53 is inserted into the hollow connecting bar 94 and contacts the inner wall of the hollow connecting bar 94. A support ring column 54 is fixedly installed on the circumference of the connecting ring 5. The support ring column 54 is inserted into the support insertion hole 15. An upper extension plate 55 is also fixedly installed at the upper end of the connecting ring 5. A first mating connecting rod 56 is hinged on the upper extension plate 55. A movable bearing plate 6 is hinged at the upper end of the first mating connecting rod 56.

[0045] like Figure 9 and Figure 10 As shown, a mating platform cavity 41 is provided at the lower end of the mating platform 4. Support guide holes 42 are symmetrically provided on both sides of the mating platform cavity 41. A bearing plug rod 61 is fixedly provided on the movable support plate 6. A bearing plug plate 62 is fixedly provided at the upper end of the bearing plug rod 61 and is inserted into the mating platform cavity 41. Reinforcing support rods 63 are symmetrically fixedly provided on the movable support plate 6 on both sides of the bearing plug rod 61 and are inserted into the support guide holes 42. A bearing mating frame 64 is fixedly provided at the upper end of the reinforcing support rod 63. A reset cavity 65 is provided on the bearing mating frame 64. A limiting support plate 651 is fixedly provided at the upper end of the bearing mating frame 64. A support channel 652 is provided on the limiting support plate 651, and a... A mating top plate 653 is provided, and an insertion channel 654 is provided on the mating top plate 653. A mating plug plate 66 is inserted into the reset cavity 65, and the reset cavity 65 is under negative pressure. A support strip 67 is fixedly provided on the mating plug plate 66, and a limiting carrier plate 68 is fixedly provided on the support strip 67. A threaded hole 681 is provided on the limiting carrier plate 68. The limiting carrier plate 68 is inserted into the support channel 652, and a limiting carrier bar 682 is fixedly provided on the limiting carrier plate 68. The limiting carrier bar 682 is in contact with the mating support 4. An insertion carrier rod 69 is inserted into the insertion channel 654. A threaded block 691 is fixedly provided at the lower end of the insertion carrier rod 69. When the threaded block 691 is not aligned with the threaded hole 681, it is in contact with the upper end face of the limiting carrier plate 68.

[0046] like Figure 3 , Figure 4 , Figure 5 , Figure 11 and Figure 13As shown, the wheel fixing mechanism includes a mounting rod 7 and a wheel bracket 8. The mounting rod 7 is movably mounted on the pump shaft 2 and cooperates with the impeller 3 to support the impeller 3. The mounting rod 7 is also movably connected to the wheel bracket 8, which is also movably mounted on the pump shaft 2. A connecting plate 81 is movably mounted on the wheel bracket 8. The mounting rod 7 can also drive the connecting plate 81 to move synchronously. A wheel bracket 82 is fixedly mounted on the connecting plate 81. The mounting rod 7 is inserted into the insertion hole 24. A mating connecting plate 73 is also fixedly mounted on the mounting rod 7. A drive plate 75 is fixedly installed, and a second connecting rod 74 is hinged to a connecting plate 73. The other end of the second connecting rod 74 is hinged to a wheel bracket 8. A connecting cavity 80 is opened on the wheel bracket 8, and a connecting plate 81 is inserted into the connecting cavity 80. The connecting plate 81 can move in the connecting cavity 80. A drive channel 83 is opened on the wheel bracket 82, and a drive plate 75 is inserted into the drive channel 83. The drive plate 75 is in contact with the inner wall of the drive channel 83. A matching strip 85 is also fixedly installed on the wheel bracket 8, and the matching strip 85 is inserted into the limiting guide groove 23.

[0047] like Figure 2 and Figure 4 As shown, a wheel body locking block 84 is fixedly installed on the wheel body locking plate 82. The wheel body locking block 84 cooperates with the impeller 3 to lock the impeller 3. That is, when the wheel body locking block 84 locks the impeller 3, it is inserted into the mounting ring groove 31 on the impeller 3, and the wheel body locking block 84 is in contact with the inner wall of the mounting ring groove 31. The mounting support rod 7 is connected to the connecting ring 5. When the connecting ring 5 is locked, the mounting support rod 7 is locked synchronously. A linkage insert 71 is fixedly installed at one end of the mounting support rod 7. A contact wheel 72 is symmetrically installed on the linkage insert 71, and the linkage insert 71 is inserted into the connecting rotation groove 51. The contact wheel 72 is in contact with the inner wall of the connecting rotation groove 51.

[0048] During impeller 3 assembly, it is sleeved onto pump shaft 2. Simultaneously, the mounting cavity 33 on impeller 3 engages with mounting support rod 7 until mounting column 32 contacts mating connecting plate 73. As impeller 3 moves further, it also drives mounting support rod 7 to move along with it. Since the linkage block 71 on mounting support rod 7 is inserted into connecting rotary groove 51, the movement of mounting support rod 7 also drives connecting ring 5 to move. With the movement of connecting ring 5, in cooperation with connecting column 53 and hollow connecting strip 94, it drives shaft support frame 9 to move towards pump shaft 2 until the support wheel 91 on shaft support frame 9 contacts the bottom wall of support ring groove 21. This achieves the desired support... Under the action of the impeller 91, effective auxiliary support is provided to the pump shaft 2 from all sides, ensuring the support rigidity of the pump shaft 2 and thus avoiding large eccentricity due to bearing wear. In addition, when the connecting ring 5 moves, it will push the movable bearing plate 6 upward under the action of the first mating connecting rod 56. As the movable bearing plate 6 moves upward, it will compress the air in the mating cavity 41 under the action of the bearing plug plate 62. At the same time, the upward movement of the movable bearing plate 6 will also cause the limiting carrier plate 68 to move to the upper side of the mating platform 4. When the limiting carrier plate 682 is no longer restricted by the mating platform 4, under the action of the negative pressure inside the reset cavity 65, it will drive the mating plug plate 66 to move further into the reset cavity 65, which will also drive the limiting carrier plate 68 to move, so that... The limiting plate 68 overlaps the upper surface of the mating support 4, thus locking the connecting ring 5. Simultaneously, the threaded hole 681 on the limiting plate 68 aligns with the threaded block 691. Rotating the insertion rod 69 causes the threaded block 691 to engage with the threaded hole 681, locking the limiting plate 68 and ensuring the stability of the connecting ring 5. When the mounting rod 7 moves, it drives the wheel holder 8 towards the impeller 3 under the action of the second mating connecting rod 74. Since the driving insert 75 on the mating connecting plate 73 is inserted into the driving channel 83, the movement of the mounting rod 7 also drives the wheel holder 82 to move synchronously, ensuring that the wheel holder 84 and the impeller are always aligned. The mounting ring grooves 31 on impeller 3 are aligned. As the wheel body bracket 8 moves towards impeller 3, the connecting insert plate 81, which is inserted into the connecting cavity 80, will also move the wheel body bracket 82, causing the wheel body block 84 to be inserted into the mounting ring groove 31 on impeller 3, thus fixing impeller 3 on pump shaft 2. Since the linkage block 71 on mounting support rod 7 is inserted into the connecting rotation groove 51 on connecting ring 5, when connecting ring 5 is locked by movable support plate 6, it will also lock mounting support rod 7, preventing it from moving in the opposite direction. This ensures the firmness of impeller 3 installation, providing auxiliary support for pump shaft 2 while impeller 3 is being installed.This not only makes the installation of impeller 3 more convenient and quick, but also provides stronger rigid support for pump shaft 2, fully ensuring the stability of pump shaft 2 operation, ensuring a smaller radial force, and ensuring the service life of the equipment. When it is necessary to disassemble and maintain impeller 3 and pump shaft 2, the mounting support rod 7 is rotated in the reverse direction to make threaded block 691 disengage from threaded hole 681, thus unlocking the limiting plate 68. Pulling the limiting plate 68 so that it is no longer supported on the mating support 4, the air in the mating cavity 41 and the weight of the movable support plate 6 itself will push the movable support plate 6 downward, thereby driving the connecting ring 5 to reset smoothly. At the same time, it can pull impeller 3 to move along pump shaft 2. As the connecting ring 5 resets, it will also drive the mounting support rod 7 to move in the reverse direction. The impeller 3 is moved away from the impeller 3 by the mounting rod 7, causing the wheel block 84 on the wheel plate 82 to disengage from the mounting ring groove 31 on the impeller 3. This unlocks the impeller 3, allowing it to be quickly and easily removed from the pump shaft 2. Furthermore, when the connecting ring 5 moves in the reverse direction, the connecting column 53 and the hollow connecting strip 94 also move the shaft support frame 9 in the reverse direction, thus removing the support from the pump shaft 2. This also facilitates the disassembly of the pump shaft 2. Combining the convenient installation of the impeller 3 with the auxiliary support of the pump shaft 2 achieves a dual benefit: simple operation, significantly reduced radial force, and effective guarantee of the pump body 1's service life and operational stability.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving centrifugal pump with low radial force, comprising a pump body, a pump casing fixedly mounted on the pump body, a pump shaft installed in the pump casing, and an impeller mounted on the pump shaft, characterized in that: The pump casing is also equipped with a shaft auxiliary support mechanism to provide auxiliary support for the pump shaft. The shaft auxiliary support mechanism is connected to a self-locking component. The shaft auxiliary support mechanism drives the self-locking component to move, thereby locking the shaft auxiliary support mechanism. The shaft auxiliary support mechanism is also connected to a wheel fixing mechanism, which fixes the impeller to the pump shaft. When the impeller is installed, it drives the wheel fixing mechanism to move, and the wheel fixing mechanism drives the shaft auxiliary support mechanism to move, thereby providing auxiliary support for the pump shaft. The impeller has an installation ring groove, and an installation column is fixedly installed on the impeller. The installation column has an installation cavity. The shaft auxiliary support mechanism includes a connecting ring and a shaft support frame. The connecting ring has a connecting rotation groove, and a support bar is fixedly installed on the circumference of the connecting ring. A connecting column is fixedly installed on the support bar. The connecting column is inserted into the hollow connecting bar and contacts the inner wall of the hollow connecting bar. A support ring column is fixedly installed on the circumference of the connecting ring. The support ring column is inserted into the support insertion hole. An upper extension plate is also fixedly installed at the upper end of the connecting ring. A first mating connecting rod is hinged to the upper extension plate. A movable support plate is hinged to the upper end of the first mating connecting rod. The wheel fixing mechanism includes a mounting rod and a wheel bracket. The mounting rod is movably mounted on the pump shaft and cooperates with the impeller to support it. The mounting rod is also movably connected to the wheel bracket, which is also movably mounted on the pump shaft. A connecting plate is movably mounted on the wheel bracket, and a wheel bracket is fixedly mounted on the connecting plate. The mounting rod is inserted into the insertion hole, and a linkage block is fixedly mounted at one end of the mounting rod. Contact wheels are symmetrically mounted on the linkage block, and the linkage block is inserted into the connecting rotation groove. The contact wheels are in contact with the inner wall of the connecting rotation groove. A mating connecting plate is also fixedly installed on the mounting support rod. A driving insert plate is fixedly installed on the mating connecting plate, and a second mating connecting rod is hinged to the mating connecting plate. A wheel bracket is hinged to the other end of the second mating connecting rod. The wheel frame has a connecting cavity, into which a connecting plate is inserted. The connecting plate can move within the connecting cavity. The wheel frame has a drive channel, into which a drive plate is inserted, and the drive plate contacts the inner wall of the drive channel. The wheel frame also has a mating strip fixedly installed, which is inserted into a limiting guide groove. The wheel frame has a wheel locking block fixedly installed, which locks the impeller by engaging with the impeller.

2. The energy-saving centrifugal pump with low radial force according to claim 1, characterized in that: The connecting ring is connected to the shaft support frame, which moves to support the pump shaft.

3. The energy-saving centrifugal pump with low radial force according to claim 2, characterized in that: The self-locking assembly includes a mating support and a movable support plate, wherein the mating support is fixedly mounted on the inner wall of the pump casing.

4. The energy-saving centrifugal pump with low radial force according to claim 3, characterized in that: The movable support plate is movably connected to the connecting ring, and the movable support plate moves when the connecting ring moves.

5. The energy-saving centrifugal pump with low radial force according to claim 4, characterized in that: The movable support plate cooperates with the mating support to lock the connecting ring, and the movable support plate can also drive the connecting ring to reset.

6. The energy-saving centrifugal pump with low radial force according to claim 5, characterized in that: The lower end of the mating platform is provided with a mating cavity, and symmetrical support guide holes are provided on both sides of the mating cavity. A bearing plug rod is fixedly provided on the movable platform, and a bearing plug plate is fixedly provided on the upper end of the bearing plug rod. The bearing plug plate is inserted into the mating cavity.

7. The energy-saving centrifugal pump with low radial force according to claim 6, characterized in that: Reinforcing rods are symmetrically fixed on the movable bearing plates on both sides of the bearing plug rod. The reinforcing rods are inserted into the support guide holes, and a bearing mating frame is fixedly installed at the upper end of the reinforcing rod. A reset cavity is opened on the bearing mating frame. A limiting bearing plate is fixedly installed at the upper end of the bearing mating frame. A support channel is opened on the limiting bearing plate, and a mating top plate is also fixedly installed on the limiting bearing plate. An insertion channel is opened on the mating top plate, and a mating plug plate is inserted into the reset cavity.

8. The energy-saving centrifugal pump with low radial force according to claim 7, characterized in that: A support strip is fixedly installed on the mating plug plate, and a limiting plate is fixedly installed on the support strip. The limiting plate has a threaded hole and is inserted into the support channel. A limiting strip is fixedly installed on the limiting plate and contacts the mating support. An insertion rod is inserted into the insertion channel, and a threaded block is fixedly installed at the lower end of the insertion rod. When the threaded block is not aligned with the threaded hole, it contacts the upper end face of the limiting plate.

9. An energy-saving centrifugal pump with low radial force according to claim 8, characterized in that: The shaft support frame is equipped with a support wheel, and a mating guide rod is fixedly installed on the shaft support frame. The mating guide rod is inserted into the mating guide hole. A bearing protrusion is also fixedly installed on the shaft support frame, and a hollow connecting strip is fixedly installed on the bearing protrusion.

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