Novel anti-corrosion water pump shaft

Abstract

The utility model discloses a novel anti-corrosion water pump shaft, which belongs to the field of water pump shafts and comprises a shaft body, the right end of the shaft body is fixedly connected with a threaded connecting rod used for being connected with a water pump impeller, a protection assembly is arranged outside the shaft body, and the protection assembly comprises a protection shell, a fixed sleeve, a movable ring, a compression spring, a limiting ring and a limiting rod. The two protection shells are connected with a positioning ring at the left end of the outer wall of the shaft body in an inserted mode through positioning rods on one sides, a fixed sleeve is fixedly connected to the right end of the outer wall of the shaft body, and a movable ring is movably connected into the fixed sleeve through sliding blocks on the two sides of the outer wall. According to the water pump shaft, the protective shell can play a role in external isolation and protection on the shaft body, the problem that the shaft body is in contact with an electrolyte solution and is corroded after microorganisms are in contact with corrosive anions, corrosive gas or other impurities contained in water is solved, the corrosion resistance of the water pump shaft is improved, and the service life of the water pump shaft is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of water pump shafts, and in particular to a novel corrosion-resistant water pump shaft. Background Technology

[0002] The water pump shaft connects the water pump impeller and the engine. One end is connected to the motor shaft via a coupling, while the other end supports the rotor's rotation. The shaft houses bearings, axial seals, and other components. Its primary function is to transmit power from the engine to the water pump impeller, thereby driving water circulation and ensuring normal engine operation. Water pump shafts are typically made of metal to withstand high-speed rotation and prolonged operation. Carbon steel is commonly used, but stainless steel may be used for special media.

[0003] In the prior art, a Chinese utility model patent with publication number "CN205478503U" and patent name "A Water Pump Shaft" discloses a water pump shaft. The patent describes a technical solution such as "shaft body 1 is a regular hexagonal rod-shaped body, with a circular stage at one end of the shaft body 1, which has an assembly thread, and a circular retaining ring 2 at the other end, the outer diameter of the retaining ring 2 being the same as the outer diameter of the shaft body 1, and the shaft body 1 and the retaining ring 2 being fixed together. The coupling 3 is a hollow cylinder, divided into two sections, one with a hexagonal inner hole 31 that can cooperate with the water pump shaft 1, and the other with a circular inner hole 32, the inner wall of which has strip-shaped protrusions that can cooperate with the motor shaft".

[0004] However, in actual use, due to the lack of corresponding protective measures for the pump shaft, when the pump shaft comes into contact with the electrolyte solution, a galvanic cell effect will be formed, leading to corrosion. Microbial corrosion will also occur, as microorganisms will form a biofilm on the surface of the pump shaft, accelerating the corrosion process. Furthermore, water contains corrosive anions, corrosive gases, or other impurities, which will accelerate the corrosion of the pump shaft upon contact with it. This not only reduces the corrosion resistance of the pump shaft during use but also shortens its service life.

[0005] Therefore, in order to solve the above-mentioned technical problems, this utility model proposes a new type of corrosion-resistant water pump shaft. Utility Model Content

[0006] The main objective of this invention is to provide a novel anti-corrosion water pump shaft, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A novel corrosion-resistant water pump shaft includes a shaft body. A threaded connecting rod for connecting a water pump impeller is fixedly connected to the right end of the shaft body. A protective assembly is provided on the outside of the shaft body, and the protective assembly includes a protective shell, a fixed sleeve, a movable ring, a compression spring, a limiting ring, and a limiting rod. The two protective shells are respectively inserted into the positioning ring on the left end of the outer wall of the shaft body through a positioning rod on one side. The fixed sleeve is fixedly connected to the right end of the outer wall of the shaft body. The movable ring is movably connected to the inside of the fixed sleeve through sliders on both sides of the outer wall. A compression spring is also fixedly connected between the movable ring and the fixed sleeve. The limiting ring is movably connected to the movable ring through a protruding ring on one side wall. A limiting rod is also fixedly connected to the other side wall of the limiting ring.

[0009] As a preferred embodiment of this utility model, a positioning ring is fixedly installed on the left end of the outer wall of the shaft, and two sets of symmetrical positioning holes are provided on the side wall of the positioning ring.

[0010] As a preferred embodiment of this utility model, the protective shell is provided with a symmetrical set, and a set of symmetrical positioning rods are fixedly installed on the left side wall of the protective shell and inserted into the positioning hole. A set of symmetrical limiting holes are also provided on the right side wall of the protective shell.

[0011] As a preferred embodiment of this utility model, the fixing sleeve is fixedly installed on the right end of the outer wall of the shaft, and a set of symmetrical sliding grooves are provided on the inner wall of the fixing sleeve, and an L-shaped limiting port is provided on the outer wall of the fixing sleeve.

[0012] As a preferred embodiment of this utility model, sliders are fixedly installed on both sides of the outer wall of the movable ring, and the sliders are movably installed in the groove. The compression spring is fixedly installed between the right side wall of the movable ring and the bottom surface of the inner cylinder of the fixed sleeve, and a protrusion groove is also provided on the left side wall of the movable ring.

[0013] As a preferred embodiment of this utility model, a convex ring is fixedly installed on the right side wall of the limiting ring, and the convex ring is movably installed in the convex groove. A limiting rod corresponding to the limiting hole is fixedly installed on the left side wall of the limiting ring, and the limiting rod is inserted into the limiting hole. A lever is also fixedly installed on the outside of the limiting ring, and the lever passes through the L-shaped limiting opening.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, the protective assembly, used in conjunction with the water pump shaft, allows the protective housing to be positioned and installed on the outer wall of the shaft by inserting the positioning rod mounted on the left side wall of the symmetrical protective shell into the positioning hole on the side wall of the positioning ring mounted on the left end of the shaft body. When the lever is pushed from the vertical part of the L-shaped limiting port into the horizontal part, the lever will drive the limiting ring, causing it to rotate on the left side of the movable ring via the convex ring. After releasing the limiting ring, the compression spring will elastically extend, pushing the movable ring to allow it to pass through... The sliders on both sides slide to the left within the fixed sleeve, pushing the limiting ring to move synchronously until the limiting rod is inserted into the limiting hole on the right side of the protective shell. This allows the combined protective shell to be fixedly installed on the outer wall of the shaft. The protective shell provides external isolation and protection for the shaft, preventing corrosion from contact with electrolyte solutions, microorganisms, corrosive anions, corrosive gases, or other impurities in the water. This not only improves the corrosion resistance of the pump shaft but also extends its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the shaft of this utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of the protective shell of this utility model;

[0020] Figure 5 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A;

[0021] Figure 6 For the present utility model Figure 3 A schematic diagram of the structural breakdown at point B.

[0022] In the diagram: 1. Shaft; 2. Threaded connecting rod; 3. Protective component; 4. Protective shell; 5. Positioning rod; 6. Limiting hole; 7. Positioning ring; 8. Positioning hole; 9. Fixing sleeve; 10. Slide groove; 11. L-shaped limiting port; 12. Moving ring; 13. Sliding block; 14. Compression spring; 15. Groove; 16. Limiting ring; 17. Protruding ring; 18. Limiting rod; 19. Lever. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] like Figure 1 - Figure 6 As shown, a novel anti-corrosion water pump shaft includes a shaft body 1. A threaded connecting rod 2 for connecting a water pump impeller is fixedly connected to the right end of the shaft body 1. The shaft body 1 is characterized by having a protective assembly 3 on its exterior. The protective assembly 3 includes a protective shell 4, a fixed sleeve 9, a movable ring 12, a compression spring 14, a limiting ring 16, and a limiting rod 18. The two protective shells 4 are respectively inserted into the positioning ring 7 on the left end of the outer wall of the shaft body 1 through a positioning rod 5 on one side. The fixed sleeve 9 is fixedly connected to the right end of the outer wall of the shaft body 1. The movable ring 12 is movably connected to the inside of the fixed sleeve 9 through sliders 13 on both sides of the outer wall. A compression spring 14 is also fixedly connected between the movable ring 12 and the fixed sleeve 9. The limiting ring 16 is movably connected to the movable ring 12 through a protruding ring 17 on one side wall. A limiting rod 18 is also fixedly connected to the other side wall of the limiting ring 16.

[0028] like Figure 3 and Figure 5As shown, a positioning ring 7 is fixedly installed on the left end of the outer wall of the shaft 1, and two sets of symmetrical positioning holes 8 are opened on the side wall of the positioning ring 7. The positioning holes 8 opened on the positioning ring 7 are used to cooperate with the protective shell 4 to play the role of positioning and installation.

[0029] like Figure 4 As shown, the protective shell 4 is provided with a symmetrical set, and a set of symmetrical positioning rods 5 are fixedly installed on the left side wall of the protective shell 4 and inserted into the positioning hole 8. A set of symmetrical limiting holes 6 are also provided on the right side wall of the protective shell 4. After the positioning rods 5 are inserted into the positioning hole 8, the symmetrical protective shell 4 can be positioned and installed on the outside of the shaft 1. The protective shell 4 can play the role of external isolation and protection for the shaft 1, so as to improve the corrosion resistance during use.

[0030] like Figure 3 and Figure 6 As shown, the fixed sleeve 9 is fixedly installed on the right end of the outer wall of the shaft 1, and a set of symmetrical sliding grooves 10 are provided on the inner wall of the fixed sleeve 9. The sliding grooves 10 are used to cooperate with the slider 13 to realize the sliding operation. An L-shaped limiting port 11 is provided on the outer wall of the fixed sleeve 9. The L-shaped limiting port 11 can limit the lever 19.

[0031] like Figure 6 As shown, sliders 13 are fixedly installed on both sides of the outer wall of the movable ring 12, and the sliders 13 are movably installed in the slide groove 10. The compression spring 14 is fixedly installed between the right side wall of the movable ring 12 and the bottom surface of the inner cylinder of the fixed sleeve 9. The left side wall of the movable ring 12 is also provided with a protrusion 15. After the compression spring 14 performs an elastic recovery operation, it will push the movable ring 12 to move to the left in the fixed sleeve 9, and the slider 13 slides in the slide groove 10. The protrusion 15 on the left side wall of the movable ring 12 is used to cooperate with the protrusion ring 17 to realize the positioning rotation operation.

[0032] like Figure 6As shown, a protruding ring 17 is fixedly installed on the right side wall of the limiting ring 16, and the protruding ring 17 is movably installed in the protruding groove 15. A limiting rod 18 corresponding to the limiting hole 6 is fixedly installed on the left side wall of the limiting ring 16, and the limiting rod 18 is inserted into the limiting hole 6. A lever 19 is also fixedly installed on the outside of the limiting ring 16, and the lever 19 passes through the L-shaped limiting port 11. After pushing the lever 19 to move from the vertical part of the L-shaped limiting port 11 to the horizontal part, the limitation on the lever 19 can be released. The protective shell 4 is fixedly installed on the outside of the shaft 1 by rotating the convex ring 17 within the convex groove 15 and driving the limiting ring 16 to rotate, thereby aligning the limiting rod 18 with the limiting hole 6. Under the pushing action of the movable ring 12, the limiting rod 18 can be inserted into the limiting hole 6 to limit and fix the protective shell 4 to the outside of the shaft 1, so as to facilitate the installation and fixing of the protective shell 4. After long-term use, if the protective shell 4 is damaged, it can be replaced in time to ensure the integrity of the protective shell 4 and its protective function on the shaft 1.

[0033] The specific operating principle of the protective component 3 in conjunction with the shaft 1 is as follows:

[0034] Before use, the symmetrical protective shell 4 is tightly attached to the outer wall of the shaft 1, and the protective shell 4 is moved to the left so that the positioning rod 5 installed on the left side wall of the protective shell 4 is inserted into the positioning hole 8 opened on the side wall of the positioning ring 7 installed at the left end of the outer wall of the shaft 1. The protective shell 4 is then positioned and installed on the outer wall of the shaft 1. The lever 19 protruding from the outer wall of the fixed sleeve 9 installed at the right end of the outer wall of the shaft 1 is pushed. The lever 19 will drive the limiting ring 16 to rotate on the left side wall of the movable ring 12, and the protruding ring 1 on the right side wall of the limiting ring 16 will rotate. 7 will be positioned and rotated within the groove 15 on the left side wall of the movable ring 12, so that the limiting rod 18 installed on the left side wall of the limiting ring 16 aligns with the limiting hole 6 on the right side wall of the protective shell 4. Meanwhile, the lever 19 will move from the vertical part of the L-shaped limiting opening 11 to the horizontal part. At this time, the limiting ring 16 will lose the restriction from the lever 19, the compression spring 14 will elastically extend and return to its original position, and push the movable ring 12 to the left. The sliders 13 on both sides of the movable ring 12 will slide within the grooves 10 on the inner wall of the fixed sleeve 9. Ring 12 will push the limiting ring 16 to the left, causing the limiting ring 16 to move from inside the fixed sleeve 9 to the outside until the limiting rod 18 installed on the left side wall of the limiting ring 16 is inserted into the limiting hole 6. This will fix the combined protective shell 4 onto the outer wall of the shaft 1, thus providing external isolation and protection for the shaft 1. This prevents corrosion caused by contact between the shaft 1 and electrolyte solution, microorganisms, corrosive anions in the water, corrosive gases, or other impurities. This not only improves the protection of the pump shaft... The protective shell 4 is corrosion resistant and extends the service life of the pump shaft. Finally, when the protective shell 4 is damaged after long-term use, the lever 19 can be pushed to the right and then the lever 19 can be inserted into the vertical part of the L-shaped limit port 11 for limit. During this process, the limit ring 16 can be driven into the fixed sleeve 9 and the limit rod 18 can be moved out of the positioning rod 5. Then the damaged protective shell 4 can be removed from the shaft 1 for replacement and installation. This facilitates the disassembly and replacement of the protective shell 4 and ensures that the protective shell 4 can continuously protect the shaft 1.

[0035] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel corrosion-resistant water pump shaft, comprising a shaft body (1), wherein a threaded connecting rod (2) for connecting a water pump impeller is fixedly connected to the right end of the shaft body (1), characterized in that: The shaft (1) is provided with a protective assembly (3) on its exterior. The protective assembly (3) includes a protective shell (4), a fixed sleeve (9), a movable ring (12), a compression spring (14), a limiting ring (16), and a limiting rod (18). The two protective shells (4) are respectively inserted into the positioning ring (7) on the left side of the outer wall of the shaft (1) through the positioning rod (5) on one side. The fixed sleeve (9) is fixedly connected to the right side of the outer wall of the shaft (1). The movable ring (12) is movably connected to the inside of the fixed sleeve (9) through the sliders (13) on both sides of the outer wall. The compression spring (14) is also fixedly connected between the movable ring (12) and the fixed sleeve (9). The limiting ring (16) is movably connected to the movable ring (12) through the protruding ring (17) on one side wall. The limiting rod (18) is also fixedly connected to the other side wall of the limiting ring (16).

2. The novel anti-corrosion water pump shaft according to claim 1, characterized in that: A positioning ring (7) is fixedly installed on the left end of the outer wall of the shaft (1), and two sets of symmetrical positioning holes (8) are opened on the side wall of the positioning ring (7).

3. The novel anti-corrosion water pump shaft according to claim 2, characterized in that: The protective shell (4) is provided with a symmetrical set, and a set of symmetrical positioning rods (5) are fixedly installed on the left side wall of the protective shell (4) and inserted into the positioning hole (8). A set of symmetrical limiting holes (6) are also provided on the right side wall of the protective shell (4).

4. A novel anti-corrosion water pump shaft according to claim 3, characterized in that: The fixed sleeve (9) is fixedly installed on the right end of the outer wall of the shaft (1), and a set of symmetrical sliding grooves (10) are provided on the inner wall of the fixed sleeve (9), and an L-shaped limiting port (11) is provided on the outer wall of the fixed sleeve (9).

5. A novel anti-corrosion water pump shaft according to claim 4, characterized in that: The movable ring (12) has sliders (13) fixedly installed on both sides of its outer wall, and the sliders (13) are movably installed in the groove (10). The compression spring (14) is fixedly installed between the right side wall of the movable ring (12) and the bottom surface of the inner tube of the fixed sleeve (9). The movable ring (12) also has a protrusion (15) on its left side wall.

6. A novel anti-corrosion water pump shaft according to claim 5, characterized in that: A protruding ring (17) is fixedly installed on the right side wall of the limiting ring (16), and the protruding ring (17) is movably installed in the protruding groove (15). A limiting rod (18) corresponding to the limiting hole (6) is fixedly installed on the left side wall of the limiting ring (16), and the limiting rod (18) is inserted into the limiting hole (6). A lever (19) is also fixedly installed on the outside of the limiting ring (16), and the lever (19) passes through the L-shaped limiting port (11).

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