Quickly replaceable impeller assembly for diesel engine sea water pump

Abstract

The utility model discloses a diesel engine sea water pump impeller assembly capable of being replaced quickly, and particularly relates to the technical field of sea water pump impeller assemblies. The diesel engine sea water pump impeller assembly comprises a rotating shaft, a limiting clamping groove is formed in the surface of the rotating shaft, a positioning groove is formed in an inner cavity of the limiting clamping groove, an annular groove is formed in one end of the rotating shaft, and a supporting ring is arranged in the middle of the rotating shaft in a sleeved mode; one end of the supporting ring is fixedly connected with a first limiting plate. The two sides of the blade plate are limited through the first limiting plate and the blocking baffle, the blade plate can be conveniently and independently detached and replaced through cooperation of the installation clamping strip and the installation clamping groove, the stability of installation of the blade plate can be improved through the sealing clamping groove, the blocking baffle is limited through the limiting clamping ring, and the sealing effect is good. The supporting ring and the blade plate can be limited, the supporting ring can be conveniently fixed and disassembled for use through the locking mechanism, a professional tool is not needed, operation can be conducted by a single person, the downtime of equipment is greatly shortened, and the operation efficiency of a ship is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of seawater pump impeller assemblies, and more specifically, to a quick-replaceable impeller assembly for a diesel engine seawater pump. Background Technology

[0002] In marine propulsion systems, the diesel engine seawater pump serves as a core cooling device, and its stable operation directly affects the safety and reliability of the entire propulsion system. The impeller, as a critical component of the seawater pump, operates for extended periods in a high-pressure, high-speed, and highly corrosive seawater environment, making it extremely susceptible to wear, cavitation, and corrosion, leading to performance degradation or even failure.

[0003] In traditional diesel engine seawater pumps, the impeller blades are tightly connected to the overall structure and fixed using a single method. They are typically connected to components such as support rings and shafts through complex welding, riveting, or multiple bolt fastening. When the impeller blades experience localized wear or corrosion and require individual replacement, the entire impeller assembly must be disassembled from the seawater pump, and the blades must be separated using specialized tools. This process is cumbersome and time-consuming, making it inconvenient to disassemble and replace the blades individually. Therefore, a quick-replacement impeller assembly for diesel engine seawater pumps is proposed. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a quick-replaceable impeller assembly for a diesel engine seawater pump to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-replaceable impeller assembly for a diesel engine seawater pump, comprising a rotating shaft, a limiting groove formed on the surface of the rotating shaft, a positioning groove formed in the inner cavity of the limiting groove, an annular groove formed at one end of the rotating shaft, a support ring sleeved in the middle of the rotating shaft, the support ring providing a mounting seat for the blade, a first limiting plate fixedly connected to one end of the support ring, the first limiting plate limiting one side of the blade, and a sealing baffle provided at the other end of the support ring limiting the side of the blade away from the first limiting plate.

[0006] The surface of the support ring is provided with a mounting groove, and the surface of the first limiting plate is provided with a sealing groove. The mounting groove and sealing groove facilitate the installation and positioning of the blade and mounting strip, improving the stability of the blade. A limiting strip is fixedly connected to the middle of the through hole of the support ring. By the limiting strip engaging with the inside of the limiting groove, the circumferential positioning of the support ring and the rotating shaft can be achieved, effectively transmitting torque and preventing relative rotation of the impeller during operation. A mounting strip is provided in the middle of the mounting groove, and a blade is fixedly connected to one end of the mounting strip. A limiting ring is provided on one side of the sealing baffle. The limiting ring engages with the inside of the annular groove, which can limit the axial displacement of the support ring and ensure the stability of the impeller during high-speed rotation. A supporting rotating shaft is sleeved on the end of the rotating shaft near the limiting ring, which facilitates connection with the end housing.

[0007] A locking mechanism is provided in the middle of the support ring. The installation position of the support ring can be locked by the locking mechanism, which improves the fixing strength and facilitates disassembly and replacement. A positioning slot is provided on the side of the support ring away from the first limiting plate. A positioning post is fixedly connected to one side of the blocking baffle. The positioning post and the positioning slot cooperate to fix the blocking baffle relative to the support ring and improve the use effect.

[0008] Preferably, the limiting strip and the limiting groove correspond to each other. The limiting strip is located in the middle of the limiting groove, and the limiting ring is located in the middle of the annular groove. The limiting strip is inserted into the inside of the limiting groove to limit the installation position of the support ring, so that the support ring can rotate with the rotating shaft. The limiting ring limits the sealing baffle, thereby improving the stability of the sealing baffle.

[0009] Preferably, the cross-sectional shape of the mounting strip is set to "H" shape, and one end of the mounting strip and the blade is located in the middle of the sealing groove, which facilitates the installation and individual disassembly and replacement of the blade.

[0010] Preferably, the positioning post corresponds to the positioning slot, and one end of the positioning post extends into the interior of the positioning slot, which facilitates the positioning of the sealing baffle during installation and allows the rotation of the support ring to drive the sealing baffle to rotate.

[0011] Preferably, the locking mechanism includes a movable groove formed in the middle of the limiting strip, the movable groove and the positioning groove corresponding to each other, the inner cavity of the movable groove is symmetrically provided with limiting slide grooves on both sides, the middle of the movable groove is provided with a positioning block, and a bolt hole is provided on one side of the support ring at a position corresponding to the movable groove.

[0012] Preferably, a bolt is inserted into the middle of the bolt hole, one end of the bolt extends into the interior of the movable groove, one side wall of the positioning block is set as an inclined surface, and one end of the bolt is in contact with the inclined surface of the positioning block.

[0013] Preferably, a second limiting plate is symmetrically fixedly connected to both sides of the positioning block. The second limiting plate is located in the middle of the limiting groove. A stabilizing rod is inserted into the middle of the second limiting plate and fixed in the middle of the limiting groove. A spring is sleeved on the end of the stabilizing rod away from the bolt. Rotating the bolt presses against the inclined surface of one side of the positioning block, which controls the second limiting plate to press against the spring, causing one end of the positioning block to extend from the inside of the movable groove into the inside of the positioning groove, thereby locking the position of the support ring. By rotating the bolt to release the pressure on the positioning block, the reverse thrust of the spring can move one end of the positioning block out of the positioning groove, facilitating disassembly and replacement.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. This utility model first limits the two sides of the blade by setting a first limiting plate and a sealing baffle. The blade can be easily disassembled and replaced by the cooperation of the mounting strip and the mounting slot. The sealing slot can improve the stability of the blade installation. The limiting ring limits the sealing baffle, which can limit the support ring and the blade. The locking mechanism can easily fix and disassemble the support ring. No special tools are required and it can be operated by a single person, which greatly reduces equipment downtime and improves the efficiency of ship operation.

[0016] 2. This utility model also limits the installation of the support ring by using the combination of the limiting strip and the limiting groove, so that the rotation of the shaft can drive the support ring to rotate. It also limits the installation of the sealing baffle by using the combination of the positioning slot and the positioning post, so that the sealing baffle rotates with the support ring. The bolts squeeze the positioning block, which facilitates drive control and improves the connection and fixing strength. The spring pushes the second limiting plate, which can make the positioning block move out of the positioning groove, which is convenient for disassembly and replacement.

[0017] In summary, through the interaction of the above-mentioned multiple functions, it is possible to easily disassemble and replace the blades individually, reducing maintenance costs, and to facilitate the disassembly and replacement of the support rings. This can be done by a single person, significantly reducing equipment downtime and improving ship operating efficiency. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the disassembled structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the cross-sectional split structure of this utility model.

[0022] Figure 5 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure 6 This is a schematic diagram of the support ring structure of this utility model.

[0024] The attached diagram is labeled as follows: 1. Rotating shaft; 2. Limiting slot; 3. Positioning slot; 4. Annular groove; 5. Support ring; 6. First limiting plate; 7. Limiting strip; 8. Mounting slot; 9. Sealing slot; 10. Blade; 11. Mounting strip; 12. Sealing baffle; 13. Positioning post; 14. Limiting ring; 15. Supporting rotating shaft; 16. Positioning slot; 17. Bolt hole; 18. Bolt; 19. Movable groove; 20. Limiting slide groove; 21. Positioning block; 22. Second limiting plate; 23. Stabilizing rod; 24. Spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] As attached Figure 1-6 The impeller assembly for a diesel engine seawater pump shown includes a shaft 1, a limiting groove 2 on the surface of the shaft 1, a positioning groove 3 in the inner cavity of the limiting groove 2, an annular groove 4 at one end of the shaft 1, a support ring 5 sleeved in the middle of the shaft 1, the support ring 5 can provide a mounting seat for the blade 10, a first limiting plate 6 is fixedly connected to one end of the support ring 5, the first limiting plate 6 limits one side of the blade 10, and a sealing baffle 12 is provided at the other end of the support ring 5, the sealing baffle 12 limits the side of the blade 10 away from the first limiting plate 6.

[0027] The surface of the support ring 5 is provided with a mounting groove 8, and the surface of the first limiting plate 6 is provided with a sealing groove 9. The mounting groove 8 and the sealing groove 9 facilitate the installation and positioning of the blade 10 and the mounting strip 11, improving the stability of the blade 10. The middle of the through hole of the support ring 5 is fixedly connected to the limiting strip 7. By the limiting strip 7 being inserted into the inside of the limiting groove 2, the circumferential positioning of the support ring 5 and the rotating shaft 1 can be realized, which can effectively transmit torque and prevent relative rotation of the impeller during operation. The middle of the mounting groove 8 is provided with a mounting strip 11, and one end of the mounting strip 11 is fixedly connected to the blade 10. One side of the sealing baffle 12 is provided with a limiting ring 14. The limiting ring 14 is inserted into the inside of the annular groove 4, which can limit the axial displacement of the support ring 5 and ensure the stability of the impeller when rotating at high speed. The end of the rotating shaft 1 near the limiting ring 14 is fitted with a support rotating shaft 15, which facilitates connection with the end housing.

[0028] A locking mechanism is provided in the middle of the support ring 5. The installation position of the support ring 5 can be locked by the locking mechanism, which improves the fixing strength and facilitates disassembly and replacement. A positioning slot 16 is provided on the side of the support ring 5 away from the first limiting plate 6. A positioning post 13 is fixedly connected to the side of the blocking baffle 12. The positioning post 13 and the positioning slot 16 cooperate to fix the blocking baffle 12 relative to the support ring 5, thereby improving the use effect.

[0029] As attached Figure 2-4 As shown, the limiting strip 7 corresponds to the limiting groove 2. The limiting strip 7 is located in the middle of the limiting groove 2. The limiting ring 14 is located in the middle of the annular groove 4. The cross-sectional shape of the mounting strip 11 is set as "H". One end of the mounting strip 11 and the blade 10 is located in the middle of the sealing groove 9. The positioning post 13 corresponds to the positioning slot 16. One end of the positioning post 13 extends into the interior of the positioning slot 16. The limiting strip 7 is inserted into the interior of the limiting groove 2 to limit the installation position of the support ring 5, so that the support ring 5 can rotate with the rotating shaft 1. The limiting ring 14 limits the sealing baffle 12, improves the stability of the sealing baffle 12, facilitates the positioning of the sealing baffle 12, and allows the rotation of the support ring 5 to drive the sealing baffle 12 to rotate.

[0030] As attached Figure 2-5As shown, the locking mechanism includes a movable groove 19 formed in the middle of the limiting strip 7, which corresponds to the positioning groove 3. The movable groove 19 has symmetrically formed limiting slide grooves 20 on both sides of its inner cavity. A positioning block 21 is provided in the middle of the movable groove 19. A bolt hole 17 is provided on one side of the support ring 5 at a position corresponding to the movable groove 19. A bolt 18 is inserted into the middle of the bolt hole 17, with one end of the bolt 18 extending into the interior of the movable groove 19. One side wall of the positioning block 21 is set as a slope, and one end of the bolt 18 fits against the slope of the positioning block 21. Second limiting plates 22 are symmetrically fixedly connected to both sides of the positioning block 21. The second limiting plates 22 are set in the limiting slide groove. A stabilizing rod 23 is inserted into the middle of the second limiting plate 22 in the middle of the groove 20. The stabilizing rod 23 is fixed in the middle of the limiting groove 20. A spring 24 is sleeved on the end of the stabilizing rod 23 away from the bolt 18. By rotating the bolt 18 to press the inclined surface of the positioning block 21, the second limiting plate 22 can be controlled to press the spring 24, so that one end of the positioning block 21 extends from the inside of the movable groove 19 into the inside of the positioning groove 3, thereby locking the position of the support ring 5. By rotating the bolt 18 to release the pressure on the positioning block 21, the reverse thrust of the spring 24 can be used to move one end of the positioning block 21 out of the inside of the positioning groove 3, which is convenient for disassembly and replacement.

[0031] The working principle of this utility model is as follows: When it is necessary to disassemble the blade 10 separately, simply separate the rotating shaft 1 from the supporting rotating shaft 15, and then remove the limiting ring 14 from the middle of the annular groove 4, so that the sealing baffle 12 can be slidably removed to disassemble the individual blade 10 and replace it separately.

[0032] When the support ring 5 needs to be disassembled and repaired, the rotating bolt 18 loosens the pressure on the positioning block 21. The spring 24 pushes the second limiting plate 22, causing one end of the positioning block 21 to move out of the positioning groove 3. The support ring 5 can then be separated from the rotating shaft 1 by sliding the support ring 5, thus disassembling the support ring 5 for easy maintenance and replacement.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-change impeller assembly for a diesel engine sea water pump comprising a rotating shaft (1), characterized in that: The surface of the rotating shaft (1) is provided with a limiting groove (2), the inner cavity of the limiting groove (2) is provided with a positioning groove (3), one end of the rotating shaft (1) is provided with an annular groove (4), a support ring (5) is sleeved in the middle of the rotating shaft (1), one end of the support ring (5) is fixedly connected with a first limiting plate (6), and the other end of the support ring (5) is provided with a sealing baffle (12). The surface of the support ring (5) is provided with an installation groove (8), the surface of the first limiting plate (6) is provided with a sealing groove (9), a limiting strip (7) is fixedly connected to the middle of the through hole of the support ring (5), an installation strip (11) is provided in the middle of the installation groove (8), a blade plate (10) is fixedly connected to one end of the installation strip (11), a limiting ring (14) is provided on one side of the sealing baffle (12), and a support rotating shaft (15) is sleeved on one end of the rotating shaft (1) near the limiting ring (14); A locking mechanism is provided in the middle of the support ring (5), and a positioning slot (16) is provided on the side of the support ring (5) away from the first limiting plate (6). A positioning post (13) is fixedly connected to one side of the blocking baffle (12).

2. A quick-change impeller assembly for a diesel marine water pump according to claim 1, characterized in that: The limiting strip (7) corresponds to the limiting groove (2), the limiting strip (7) is located in the middle of the limiting groove (2), and the limiting ring (14) is located in the middle of the annular groove (4).

3. A quick-change impeller assembly for a diesel marine water pump according to claim 1, characterized in that: The cross-sectional shape of the mounting strip (11) is set to "H" shape, and one end of the mounting strip (11) and the blade (10) is located in the middle of the sealing groove (9).

4. A quick-change impeller assembly for a diesel marine water pump according to claim 1, characterized in that: The positioning post (13) corresponds to the positioning slot (16), and one end of the positioning post (13) extends into the interior of the positioning slot (16).

5. A quick-change impeller assembly for a diesel marine water pump according to claim 1, characterized in that: The locking mechanism includes a movable groove (19) in the middle of the limiting strip (7), the movable groove (19) and the positioning groove (3) are corresponding to each other, the inner cavity of the movable groove (19) is symmetrically provided with limiting slide grooves (20), the middle of the movable groove (19) is provided with a positioning block (21), and a bolt hole (17) is provided on one side of the support ring (5) at a position corresponding to the movable groove (19).

6. A quick-change impeller assembly for a diesel marine water pump according to claim 5, characterized in that: A bolt (18) is inserted in the middle of the bolt hole (17), one end of the bolt (18) extends into the interior of the movable groove (19), one side wall of the positioning block (21) is set as an inclined surface, and one end of the bolt (18) fits against the inclined surface of the positioning block (21).

7. A quick-change impeller assembly for a diesel marine water pump according to claim 5, wherein: The positioning block (21) is symmetrically fixedly connected to the two sides of the second limiting plate (22). The second limiting plate (22) is set in the middle of the limiting slide groove (20). A stabilizing rod (23) is inserted in the middle of the second limiting plate (22). The stabilizing rod (23) is fixed in the middle of the limiting slide groove (20). A spring (24) is sleeved on the end of the stabilizing rod (23) away from the bolt (18).

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